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Portwood 14 Day Long Range Forecast

14 Day weather providing an extended long range forecast outlook for Portwood

Cheshire, United Kingdom

Long range weather outlook for Portwood includes 14 day forecast summary:

The next 14 day outlook for Portwood shows the average daytime maximum temperature will be around 16°C, with a high for the two weeks of 20°C expected on the afternoon of Thursday 27th. The average minimum temperature will be 8°C, dipping to its lowest on the morning of Monday 24th at 5°C. The next 14 days will remain predominantly dry. On the whole winds are likely to be moderate.

DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Mon 24
Sep
15:00

WNW
WNW

11 / 12 mph 57 / 54°F 62% 1038 mb
Low level cloud: 10%
Mid level cloud: 6%
High level cloud: 70%
Most Significant Cloud Type: low
20%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
18:00

WNW
WNW

6 / 9 mph 52 / 49°F 73% 1037 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: medium
6%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
21:00

WNW
WNW

3 / 5 mph 48 / 48°F 80% 1039 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 1%
Most Significant Cloud Type: medium
6%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
Tue 25
Sep
00:00

SSW
SSW

2 / 4 mph 45 / 44°F 82% 1038 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 92%
Most Significant Cloud Type: medium
7%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
03:00

S
S

3 / 6 mph 43 / 42°F 82% 1038 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 88%
Most Significant Cloud Type: medium
11%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
06:00

SSE
SSE

5 / 9 mph 43 / 40°F 81% 1037 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 1%
Most Significant Cloud Type: medium
4%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
09:00

SSW
SSW

11 / 12 mph 51 / 47°F 71% 1037 mb
Low level cloud: 0%
Mid level cloud: 15%
High level cloud: 4%
Most Significant Cloud Type: medium
14%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
12:00

SSW
SSW

13 / 15 mph 57 / 54°F 60% 1035 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 7%
Most Significant Cloud Type: medium
5%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
15:00

SSW
SSW

14 / 16 mph 60 / 59°F 62% 1033 mb
Low level cloud: 0%
Mid level cloud: 22%
High level cloud: 32%
Most Significant Cloud Type: medium
23%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
18:00

SSW
SSW

11 / 19 mph 55 / 51°F 74% 1032 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 12%
Most Significant Cloud Type: medium
46%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
21:00

SSW
SSW

12 / 18 mph 53 / 49°F 74% 1033 mb
Low level cloud: 20%
Mid level cloud: 44%
High level cloud: 31%
Most Significant Cloud Type: low
39%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
Wed 26
Sep
00:00

SW
SW

13 / 18 mph 53 / 48°F 74% 1032 mb
Low level cloud: 55%
Mid level cloud: 44%
High level cloud: 3%
Most Significant Cloud Type: low
71%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
03:00

SW
SW

11 / 16 mph 53 / 49°F 80% 1031 mb
Low level cloud: 76%
Mid level cloud: 62%
High level cloud: 0%
Most Significant Cloud Type: low
98%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
06:00

SSW
SSW

11 / 16 mph 52 / 49°F 82% 1030 mb
Low level cloud: 35%
Mid level cloud: 22%
High level cloud: 0%
Most Significant Cloud Type: low
42%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
09:00

SW
SW

10 / 12 mph 57 / 55°F 77% 1030 mb
Low level cloud: 12%
Mid level cloud: 39%
High level cloud: 3%
Most Significant Cloud Type: medium
72%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
12:00

WSW
WSW

10 / 11 mph 64 / 63°F 71% 1031 mb
Low level cloud: 47%
Mid level cloud: 24%
High level cloud: 0%
Most Significant Cloud Type: low
55%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
15:00

W
W

9 / 11 mph 67 / 66°F 69% 1030 mb
Low level cloud: 38%
Mid level cloud: 21%
High level cloud: 0%
Most Significant Cloud Type: low
45%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
18:00

WSW
WSW

6 / 11 mph 61 / 60°F 79% 1030 mb
Low level cloud: 17%
Mid level cloud: 20%
High level cloud: 0%
Most Significant Cloud Type: low
24%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
21:00

SW
SW

5 / 8 mph 57 / 57°F 80% 1031 mb
Low level cloud: 0%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: medium
11%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
Thu 27
Sep
00:00

SSW
SSW

3 / 6 mph 54 / 54°F 78% 1030 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: medium
7%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
03:00

S
S

3 / 7 mph 51 / 51°F 76% 1030 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
6%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
06:00

S
S

4 / 9 mph 49 / 48°F 73% 1028 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
09:00

SSW
SSW

6 / 8 mph 58 / 56°F 58% 1027 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
12:00

SW
SW

8 / 9 mph 66 / 65°F 52% 1026 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
15:00

W
W

7 / 8 mph 67 / 66°F 53% 1024 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
18:00

WNW
WNW

6 / 9 mph 62 / 61°F 67% 1024 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
21:00

NW
NW

6 / 8 mph 57 / 56°F 78% 1025 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 1%
Most Significant Cloud Type: medium
1%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
Fri 28
Sep
00:00

NW
NW

4 / 7 mph 52 / 51°F 89% 1025 mb
Low level cloud: 2%
Mid level cloud: 1%
High level cloud: 5%
Most Significant Cloud Type: low
3%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
03:00

N
N

5 / 9 mph 50 / 49°F 92% 1026 mb
Low level cloud: 77%
Mid level cloud: 7%
High level cloud: 5%
Most Significant Cloud Type: low
80%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
06:00

NE
NE

11 / 15 mph 52 / 48°F 80% 1028 mb
Low level cloud: 80%
Mid level cloud: 23%
High level cloud: 12%
Most Significant Cloud Type: low
89%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
09:00

NE
NE

11 / 12 mph 53 / 49°F 73% 1031 mb
Low level cloud: 6%
Mid level cloud: 0%
High level cloud: 56%
Most Significant Cloud Type: medium
19%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
12:00

NE
NE

9 / 11 mph 59 / 56°F 61% 1032 mb
Low level cloud: 8%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
8%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
15:00

ENE
ENE

9 / 10 mph 60 / 57°F 59% 1032 mb
Low level cloud: 16%
Mid level cloud: 0%
High level cloud: 2%
Most Significant Cloud Type: low
16%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
18:00

ENE
ENE

7 / 8 mph 56 / 54°F 69% 1033 mb
Low level cloud: 1%
Mid level cloud: 0%
High level cloud: 3%
Most Significant Cloud Type: high
2%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
21:00

E
E

7 / 9 mph 51 / 48°F 78% 1034 mb
Low level cloud: 4%
Mid level cloud: 0%
High level cloud: 5%
Most Significant Cloud Type: low
4%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
Sat 29
Sep
00:00

E
E

5 / 7 mph 48 / 46°F 85% 1034 mb
Low level cloud: 2%
Mid level cloud: 2%
High level cloud: 10%
Most Significant Cloud Type: low
3%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
03:00

E
E

4 / 6 mph 46 / 44°F 87% 1033 mb
Low level cloud: 3%
Mid level cloud: 3%
High level cloud: 14%
Most Significant Cloud Type: low
5%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
06:00

ESE
ESE

3 / 6 mph 44 / 42°F 88% 1033 mb
Low level cloud: 4%
Mid level cloud: 4%
High level cloud: 18%
Most Significant Cloud Type: low
7%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
09:00

SSE
SSE

4 / 5 mph 53 / 51°F 75% 1033 mb
Low level cloud: 3%
Mid level cloud: 5%
High level cloud: 16%
Most Significant Cloud Type: low
6%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
12:00

S
S

6 / 6 mph 58 / 57°F 59% 1031 mb
Low level cloud: 3%
Mid level cloud: 5%
High level cloud: 14%
Most Significant Cloud Type: low
6%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
15:00

SSE
SSE

5 / 6 mph 60 / 59°F 57% 1029 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 82%
Most Significant Cloud Type: medium
7%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
18:00

S
S

2 / 3 mph 54 / 54°F 70% 1028 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 86%
Most Significant Cloud Type: medium
7%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
21:00

E
E

1 / 2 mph 50 / 50°F 73% 1029 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 82%
Most Significant Cloud Type: medium
6%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
Sun 30
Sep
00:00

SSE
SSE

4 / 7 mph 47 / 46°F 75% 1028 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 83%
Most Significant Cloud Type: medium
6%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
03:00

SSW
SSW

2 / 5 mph 46 / 46°F 82% 1027 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 36%
Most Significant Cloud Type: medium
4%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
06:00

WSW
WSW

1 / 1 mph 43 / 43°F 85% 1027 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 32%
Most Significant Cloud Type: high
31%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
09:00

WNW
WNW

4 / 4 mph 54 / 53°F 72% 1027 mb
Low level cloud: 0%
Mid level cloud: 10%
High level cloud: 25%
Most Significant Cloud Type: medium
11%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
12:00

NW
NW

7 / 9 mph 59 / 57°F 65% 1027 mb
Low level cloud: 32%
Mid level cloud: 1%
High level cloud: 2%
Most Significant Cloud Type: low
32%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
15:00

NW
NW

9 / 11 mph 58 / 56°F 71% 1027 mb
Low level cloud: 91%
Mid level cloud: 0%
High level cloud: 82%
Most Significant Cloud Type: low
100%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
18:00

NW
NW

6 / 9 mph 55 / 52°F 81% 1029 mb
Low level cloud: 53%
Mid level cloud: 0%
High level cloud: 2%
Most Significant Cloud Type: low
52%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
21:00

NNW
NNW

5 / 8 mph 50 / 49°F 89% 1031 mb
Low level cloud: 22%
Mid level cloud: 0%
High level cloud: 5%
Most Significant Cloud Type: low
22%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Mon 01
Oct
00:00

W
W

10 / 15 mph 50 / 46°F 74% 1026 mb
Low level cloud: 49%
Mid level cloud: 4%
High level cloud: 8%
Most Significant Cloud Type: low
51%
0.00 In
06:00

WNW
WNW

8 / 13 mph 45 / 40°F 90% 1010 mb
Low level cloud: 56%
Mid level cloud: 58%
High level cloud: 0%
Most Significant Cloud Type: low
75%
0.00 In
12:00

N
N

9 / 11 mph 55 / 52°F 65% 1026 mb
Low level cloud: 78%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
77%
0.00 In
18:00

NW
NW

17 / 20 mph 56 / 52°F 78% 1020 mb
Low level cloud: 88%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
87%
0.02 In
Tue 02
Oct
00:00

WSW
WSW

9 / 14 mph 49 / 46°F 82% 1029 mb
Low level cloud: 61%
Mid level cloud: 22%
High level cloud: 15%
Most Significant Cloud Type: low
71%
0.00 In
06:00

WNW
WNW

9 / 15 mph 48 / 44°F 95% 1029 mb
Low level cloud: 90%
Mid level cloud: 22%
High level cloud: 2%
Most Significant Cloud Type: low
97%
0.00 In
12:00

WNW
WNW

9 / 11 mph 59 / 59°F 80% 1029 mb
Low level cloud: 70%
Mid level cloud: 10%
High level cloud: 4%
Most Significant Cloud Type: low
74%
0.00 In
18:00

WNW
WNW

6 / 8 mph 57 / 56°F 96% 1030 mb
Low level cloud: 91%
Mid level cloud: 2%
High level cloud: 33%
Most Significant Cloud Type: low
95%
0.01 In
Wed 03
Oct
00:00

SW
SW

5 / 6 mph 55 / 54°F 90% 1027 mb
Low level cloud: 1%
Mid level cloud: 11%
High level cloud: 9%
Most Significant Cloud Type: medium
14%
0.00 In
06:00

W
W

2 / 4 mph 51 / 52°F 99% 1031 mb
Low level cloud: 88%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.00 In
12:00

WSW
WSW

9 / 10 mph 62 / 62°F 64% 1025 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
5%
0.00 In
18:00

W
W

5 / 6 mph 59 / 59°F 90% 1028 mb
Low level cloud: 29%
Mid level cloud: 5%
High level cloud: 7%
Most Significant Cloud Type: low
31%
0.00 In
Thu 04
Oct
00:00

W
W

6 / 11 mph 49 / 46°F 95% 1025 mb
Low level cloud: 25%
Mid level cloud: 3%
High level cloud: 42%
Most Significant Cloud Type: low
30%
0.00 In
06:00

NW
NW

6 / 12 mph 49 / 46°F 96% 1028 mb
Low level cloud: 62%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: low
63%
0.00 In
12:00

WNW
WNW

9 / 10 mph 58 / 56°F 79% 1028 mb
Low level cloud: 57%
Mid level cloud: 3%
High level cloud: 5%
Most Significant Cloud Type: low
58%
0.01 In
18:00

NW
NW

8 / 9 mph 59 / 58°F 81% 1029 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 15%
Most Significant Cloud Type: medium
4%
0.00 In
Fri 05
Oct
00:00

SW
SW

9 / 15 mph 48 / 43°F 97% 1026 mb
Low level cloud: 59%
Mid level cloud: 4%
High level cloud: 32%
Most Significant Cloud Type: low
64%
0.00 In
06:00

W
W

4 / 7 mph 45 / 43°F 91% 1029 mb
Low level cloud: 2%
Mid level cloud: 23%
High level cloud: 33%
Most Significant Cloud Type: medium
29%
0.00 In
12:00

W
W

20 / 29 mph 57 / 52°F 86% 1022 mb
Low level cloud: 70%
Mid level cloud: 26%
High level cloud: 0%
Most Significant Cloud Type: low
79%
0.02 In
18:00

WNW
WNW

6 / 9 mph 54 / 53°F 95% 1027 mb
Low level cloud: 42%
Mid level cloud: 16%
High level cloud: 0%
Most Significant Cloud Type: low
47%
0.00 In
Sat 06
Oct
00:00

WNW
WNW

12 / 20 mph 45 / 39°F 78% 1026 mb
Low level cloud: 29%
Mid level cloud: 10%
High level cloud: 19%
Most Significant Cloud Type: low
34%
0.03 In
06:00

W
W

4 / 6 mph 55 / 54°F 98% 1027 mb
Low level cloud: 67%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.00 In
12:00

NW
NW

14 / 16 mph 51 / 46°F 72% 1027 mb
Low level cloud: 74%
Mid level cloud: 46%
High level cloud: 5%
Most Significant Cloud Type: low
90%
0.00 In
18:00

WNW
WNW

5 / 7 mph 59 / 58°F 95% 1025 mb
Low level cloud: 60%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: low
60%
0.01 In
Sun 07
Oct
00:00

NNW
NNW

3 / 4 mph 50 / 50°F 94% 1029 mb
Low level cloud: 22%
Mid level cloud: 32%
High level cloud: 0%
Most Significant Cloud Type: low
32%
0.04 In
06:00

WNW
WNW

2 / 4 mph 49 / 49°F 97% 1025 mb
Low level cloud: 44%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: low
45%
0.00 In
12:00

S
S

6 / 7 mph 57 / 56°F 69% 1031 mb
Low level cloud: 19%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: low
22%
0.00 In
18:00

WNW
WNW

3 / 3 mph 62 / 62°F 88% 1024 mb
Low level cloud: 0%
Mid level cloud: 10%
High level cloud: 3%
Most Significant Cloud Type: medium
10%
0.00 In
Mon 08
Oct
00:00

SSW
SSW

8 / 11 mph 51 / 48°F 94% 1029 mb
Low level cloud: 46%
Mid level cloud: 5%
High level cloud: 6%
Most Significant Cloud Type: low
48%
0.00 In
06:00

SSW
SSW

3 / 6 mph 52 / 52°F 95% 1023 mb
Low level cloud: 28%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: low
30%
0.00 In
12:00

SSW
SSW

13 / 15 mph 60 / 60°F 82% 1025 mb
Low level cloud: 70%
Mid level cloud: 9%
High level cloud: 33%
Most Significant Cloud Type: low
77%
0.01 In
18:00

S
S

3 / 4 mph 65 / 65°F 85% 1018 mb
Low level cloud: 1%
Mid level cloud: 10%
High level cloud: 44%
Most Significant Cloud Type: medium
14%
0.00 In
Tue 09
Oct
00:00

SSW
SSW

12 / 18 mph 53 / 49°F 88% 1020 mb
Low level cloud: 27%
Mid level cloud: 5%
High level cloud: 33%
Most Significant Cloud Type: low
32%
0.00 In
06:00

ESE
ESE

4 / 6 mph 56 / 56°F 94% 1011 mb
Low level cloud: 9%
Mid level cloud: 19%
High level cloud: 53%
Most Significant Cloud Type: low
22%
0.00 In
12:00

SSW
SSW

15 / 18 mph 59 / 59°F 63% 1011 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 32%
Most Significant Cloud Type: medium
8%
0.00 In
18:00

SSE
SSE

4 / 5 mph 60 / 60°F 94% 1005 mb
Low level cloud: 24%
Mid level cloud: 45%
High level cloud: 46%
Most Significant Cloud Type: low
45%
0.01 In

The day label given represents the local day relative to the local time for the location you are looking at.
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Day

This time is corrected for local time zones and where possible for daylight saving times.
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Local Time

The wind direction we use on this page is the direction the wind is coming from, given in a 16 point compass format.
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Dir

This refers to the sustained average wind speed, normally averaged over a period of 10 minutes for up to 3 hrs.
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Speed/
Gust

Temperature from our forecast perspective are fairly well defined, they are what we would expect to measure in a standard meteorological screen (in other words, shaded and well ventilated) at 2 metres above ground level.
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Temp/
Feels Like

The relative humidity is the percent of saturation humidity, generally calculated in relation to saturated vapour density.
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Humidity

The value given is a total predicted for the previous 3 hrs and includes the time of the forecast being looked at.
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Precip Amount

The total amount of cloud as a percentage is derived from looking at cloud cover throughout the atmosphere and estimating how these combine when looked at from the ground.
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Cloud Amount

Here we try to capture the feel of the weather as an image – it will never be perfect but is useful for a quick overview.
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Weather

When we measure for forecast air pressure we are normally doing this relative to a certain height and most commonly relative to Mean Sea Level.
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Pressure