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Ligonier 14 Day Long Range Forecast

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

Pennsylvania, United States Of America

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

The next 14 day outlook for Ligonier shows the average daytime maximum temperature will be around 24°C, with a high for the two weeks of 30°C expected on the afternoon of Tuesday 21st. The mean minimum temperature will be 10°C, dipping to its lowest on the morning of Saturday 25th at 1°C. Expect the following 14 days ahead to have some days seeing a little precipitation and some days with rain. It looks like Saturday 18th will have the most precipitation with an accumulation of around 12.0mm. On the whole winds are likely to be light.

DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Fri 17
May
16:00

SW
SW

2 / 2 mph 69 / 65°F 95% 1012 mb
Low level cloud: 34%
Mid level cloud: 86%
High level cloud: 76%
Most Significant Cloud Type: low
72%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

S
S

2 / 2 mph 66 / 64°F 95% 1012 mb
Low level cloud: 33%
Mid level cloud: 89%
High level cloud: 100%
Most Significant Cloud Type: low
76%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SSW
SSW

4 / 4 mph 62 / 62°F 99% 1013 mb
Low level cloud: 74%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
Sat 18
May
01:00

S
S

2 / 3 mph 58 / 59°F 99% 1012 mb
Low level cloud: 73%
Mid level cloud: 78%
High level cloud: 32%
Most Significant Cloud Type: low
100%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
04:00

SSW
SSW

2 / 2 mph 57 / 57°F 99% 1013 mb
Low level cloud: 90%
Mid level cloud: 73%
High level cloud: 15%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

ESE
ESE

1 / 2 mph 59 / 59°F 98% 1014 mb
Low level cloud: 94%
Mid level cloud: 56%
High level cloud: 1%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

SE
SE

2 / 2 mph 69 / 67°F 84% 1014 mb
Low level cloud: 72%
Mid level cloud: 34%
High level cloud: 2%
Most Significant Cloud Type: low
83%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

ENE
ENE

3 / 5 mph 71 / 69°F 83% 1012 mb
Low level cloud: 85%
Mid level cloud: 23%
High level cloud: 0%
Most Significant Cloud Type: low
93%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
16:00

ESE
ESE

5 / 8 mph 74 / 76°F 77% 1012 mb
Low level cloud: 28%
Mid level cloud: 28%
High level cloud: 0%
Most Significant Cloud Type: low
37%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
19:00

ESE
ESE

6 / 9 mph 64 / 62°F 88% 1014 mb
Low level cloud: 15%
Mid level cloud: 16%
High level cloud: 0%
Most Significant Cloud Type: low
20%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SE
SE

5 / 10 mph 55 / 54°F 94% 1015 mb
Low level cloud: 23%
Mid level cloud: 16%
High level cloud: 0%
Most Significant Cloud Type: low
28%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 19
May
01:00

SE
SE

5 / 9 mph 53 / 52°F 95% 1015 mb
Low level cloud: 28%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: low
31%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SE
SE

4 / 9 mph 50 / 48°F 97% 1015 mb
Low level cloud: 24%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

ESE
ESE

4 / 4 mph 63 / 60°F 85% 1016 mb
Low level cloud: 29%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: low
32%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

E
E

3 / 3 mph 75 / 76°F 61% 1016 mb
Low level cloud: 1%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

NNE
NNE

3 / 4 mph 82 / 80°F 46% 1014 mb
Low level cloud: 0%
Mid level cloud: 25%
High level cloud: 0%
Most Significant Cloud Type: medium
24%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

NE
NE

6 / 7 mph 82 / 80°F 45% 1013 mb
Low level cloud: 0%
Mid level cloud: 19%
High level cloud: 0%
Most Significant Cloud Type: medium
19%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

SE
SE

4 / 9 mph 66 / 64°F 83% 1014 mb
Low level cloud: 0%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: medium
10%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SE
SE

4 / 8 mph 55 / 54°F 94% 1016 mb
Low level cloud: 0%
Mid level cloud: 16%
High level cloud: 0%
Most Significant Cloud Type: medium
16%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 20
May
01:00

SE
SE

4 / 9 mph 52 / 51°F 96% 1016 mb
Low level cloud: 2%
Mid level cloud: 19%
High level cloud: 0%
Most Significant Cloud Type: medium
24%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SE
SE

4 / 9 mph 51 / 50°F 95% 1016 mb
Low level cloud: 0%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: medium
12%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

SE
SE

3 / 4 mph 66 / 63°F 76% 1017 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

SE
SE

6 / 7 mph 77 / 77°F 53% 1016 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

SE
SE

6 / 7 mph 82 / 79°F 45% 1015 mb
Low level cloud: 0%
Mid level cloud: 28%
High level cloud: 0%
Most Significant Cloud Type: medium
27%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

SE
SE

6 / 6 mph 82 / 80°F 47% 1014 mb
Low level cloud: 0%
Mid level cloud: 25%
High level cloud: 0%
Most Significant Cloud Type: medium
25%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

ESE
ESE

6 / 12 mph 67 / 64°F 78% 1014 mb
Low level cloud: 0%
Mid level cloud: 13%
High level cloud: 0%
Most Significant Cloud Type: medium
12%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SE
SE

6 / 12 mph 55 / 54°F 93% 1016 mb
Low level cloud: 0%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: medium
10%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 21
May
01:00

SE
SE

6 / 12 mph 53 / 51°F 94% 1015 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: medium
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SE
SE

4 / 9 mph 52 / 51°F 93% 1015 mb
Low level cloud: 0%
Mid level cloud: 22%
High level cloud: 0%
Most Significant Cloud Type: medium
21%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

SSE
SSE

3 / 4 mph 67 / 64°F 76% 1015 mb
Low level cloud: 0%
Mid level cloud: 22%
High level cloud: 0%
Most Significant Cloud Type: medium
21%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

WSW
WSW

5 / 6 mph 81 / 79°F 52% 1014 mb
Low level cloud: 0%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: medium
11%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

W
W

8 / 9 mph 85 / 82°F 44% 1013 mb
Low level cloud: 0%
Mid level cloud: 13%
High level cloud: 97%
Most Significant Cloud Type: medium
16%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

W
W

7 / 8 mph 85 / 82°F 45% 1012 mb
Low level cloud: 0%
Mid level cloud: 17%
High level cloud: 32%
Most Significant Cloud Type: medium
18%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

SW
SW

3 / 6 mph 70 / 68°F 83% 1013 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 6%
Most Significant Cloud Type: medium
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SE
SE

5 / 11 mph 60 / 60°F 82% 1013 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: medium
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 22
May
01:00

SE
SE

5 / 11 mph 58 / 58°F 88% 1012 mb
Low level cloud: 0%
Mid level cloud: 10%
High level cloud: 9%
Most Significant Cloud Type: medium
10%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SSE
SSE

4 / 9 mph 56 / 56°F 93% 1013 mb
Low level cloud: 0%
Mid level cloud: 13%
High level cloud: 0%
Most Significant Cloud Type: medium
13%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

SSW
SSW

6 / 8 mph 72 / 69°F 74% 1013 mb
Low level cloud: 0%
Mid level cloud: 17%
High level cloud: 0%
Most Significant Cloud Type: medium
16%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

SW
SW

11 / 13 mph 84 / 84°F 53% 1012 mb
Low level cloud: 0%
Mid level cloud: 31%
High level cloud: 1%
Most Significant Cloud Type: medium
31%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

WSW
WSW

12 / 14 mph 85 / 85°F 49% 1010 mb
Low level cloud: 0%
Mid level cloud: 19%
High level cloud: 37%
Most Significant Cloud Type: medium
20%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

SW
SW

7 / 10 mph 75 / 76°F 90% 1010 mb
Low level cloud: 2%
Mid level cloud: 18%
High level cloud: 100%
Most Significant Cloud Type: medium
28%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
19:00

SSW
SSW

5 / 11 mph 69 / 66°F 93% 1010 mb
Low level cloud: 3%
Mid level cloud: 18%
High level cloud: 1%
Most Significant Cloud Type: medium
27%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
22:00

SSE
SSE

5 / 11 mph 61 / 61°F 96% 1009 mb
Low level cloud: 14%
Mid level cloud: 17%
High level cloud: 1%
Most Significant Cloud Type: low
20%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
Thu 23
May
01:00

S
S

5 / 11 mph 58 / 58°F 97% 1009 mb
Low level cloud: 19%
Mid level cloud: 31%
High level cloud: 100%
Most Significant Cloud Type: low
42%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SW
SW

11 / 24 mph 64 / 64°F 93% 1008 mb
Low level cloud: 11%
Mid level cloud: 43%
High level cloud: 100%
Most Significant Cloud Type: medium
78%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

WSW
WSW

11 / 15 mph 65 / 65°F 98% 1008 mb
Low level cloud: 98%
Mid level cloud: 46%
High level cloud: 90%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
10:00

SW
SW

11 / 16 mph 65 / 65°F 98% 1007 mb
Low level cloud: 97%
Mid level cloud: 53%
High level cloud: 6%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

WNW
WNW

11 / 14 mph 60 / 60°F 98% 1010 mb
Low level cloud: 100%
Mid level cloud: 97%
High level cloud: 16%
Most Significant Cloud Type: low
100%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
16:00

WNW
WNW

12 / 16 mph 58 / 56°F 91% 1011 mb
Low level cloud: 96%
Mid level cloud: 13%
High level cloud: 8%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

NW
NW

13 / 15 mph 54 / 50°F 81% 1014 mb
Low level cloud: 42%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: low
42%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

NW
NW

11 / 13 mph 50 / 46°F 71% 1016 mb
Low level cloud: 90%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
89%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Fri 24
May
01:00

SSW
SSW

1 / 3 mph 51 / 51°F 88% 1021 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 5%
Most Significant Cloud Type: high
4%
0.0 In
07:00

W
W

7 / 15 mph 57 / 56°F 86% 1015 mb
Low level cloud: 35%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: low
49%
0.0 In
13:00

W
W

8 / 17 mph 85 / 84°F 35% 1012 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
0.0 In
19:00

ESE
ESE

6 / 12 mph 68 / 68°F 74% 1013 mb
Low level cloud: 0%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: medium
9%
0.0 In
Sat 25
May
01:00

SE
SE

2 / 4 mph 59 / 60°F 96% 1016 mb
Low level cloud: 19%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: low
20%
0.0 In
07:00

WSW
WSW

3 / 7 mph 51 / 51°F 83% 1018 mb
Low level cloud: 35%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
36%
0.0 In
13:00

NW
NW

6 / 14 mph 65 / 65°F 49% 1019 mb
Low level cloud: 1%
Mid level cloud: 0%
High level cloud: 60%
Most Significant Cloud Type: medium
5%
0.0 In
19:00

SE
SE

2 / 4 mph 58 / 58°F 69% 1022 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 9%
Most Significant Cloud Type: medium
8%
0.0 In
Sun 26
May
01:00

SE
SE

4 / 9 mph 57 / 56°F 67% 1018 mb
Low level cloud: 0%
Mid level cloud: 50%
High level cloud: 19%
Most Significant Cloud Type: medium
50%
0.0 In
07:00

SE
SE

6 / 12 mph 55 / 54°F 66% 1023 mb
Low level cloud: 0%
Mid level cloud: 10%
High level cloud: 12%
Most Significant Cloud Type: medium
10%
0.0 In
13:00

SE
SE

5 / 10 mph 64 / 64°F 97% 1017 mb
Low level cloud: 51%
Mid level cloud: 44%
High level cloud: 100%
Most Significant Cloud Type: low
78%
0.1 In
19:00

SE
SE

7 / 15 mph 59 / 58°F 91% 1019 mb
Low level cloud: 0%
Mid level cloud: 76%
High level cloud: 35%
Most Significant Cloud Type: medium
77%
0.0 In
Mon 27
May
01:00

SSE
SSE

4 / 8 mph 60 / 60°F 98% 1015 mb
Low level cloud: 25%
Mid level cloud: 30%
High level cloud: 100%
Most Significant Cloud Type: low
47%
0.4 In
07:00

SW
SW

11 / 22 mph 64 / 64°F 95% 1017 mb
Low level cloud: 77%
Mid level cloud: 42%
High level cloud: 22%
Most Significant Cloud Type: low
94%
0.2 In
13:00

W
W

11 / 22 mph 71 / 71°F 94% 1013 mb
Low level cloud: 57%
Mid level cloud: 88%
High level cloud: 20%
Most Significant Cloud Type: low
90%
0.3 In
19:00

WSW
WSW

10 / 20 mph 66 / 66°F 97% 1013 mb
Low level cloud: 97%
Mid level cloud: 28%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.2 In
Tue 28
May
01:00

WSW
WSW

9 / 18 mph 62 / 62°F 99% 1015 mb
Low level cloud: 99%
Mid level cloud: 78%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.7 In
07:00

WSW
WSW

3 / 6 mph 63 / 63°F 99% 1015 mb
Low level cloud: 96%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: low
98%
0.0 In
13:00

NNW
NNW

3 / 6 mph 69 / 69°F 98% 1016 mb
Low level cloud: 91%
Mid level cloud: 93%
High level cloud: 33%
Most Significant Cloud Type: low
100%
0.3 In
19:00

NW
NW

2 / 5 mph 68 / 68°F 81% 1014 mb
Low level cloud: 0%
Mid level cloud: 11%
High level cloud: 100%
Most Significant Cloud Type: medium
15%
0.0 In
Wed 29
May
01:00

ENE
ENE

3 / 6 mph 50 / 50°F 97% 1019 mb
Low level cloud: 13%
Mid level cloud: 0%
High level cloud: 5%
Most Significant Cloud Type: low
13%
0.0 In
07:00

ENE
ENE

1 / 2 mph 63 / 63°F 71% 1015 mb
Low level cloud: 0%
Mid level cloud: 43%
High level cloud: 100%
Most Significant Cloud Type: medium
47%
0.0 In
13:00

E
E

7 / 16 mph 67 / 67°F 55% 1017 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 100%
Most Significant Cloud Type: medium
47%
0.0 In
19:00

NNW
NNW

2 / 4 mph 67 / 67°F 82% 1012 mb
Low level cloud: 0%
Mid level cloud: 14%
High level cloud: 32%
Most Significant Cloud Type: medium
15%
0.0 In
Thu 30
May
01:00

ESE
ESE

3 / 7 mph 52 / 52°F 90% 1018 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 100%
Most Significant Cloud Type: medium
49%
0.0 In
07:00

W
W

2 / 5 mph 61 / 61°F 91% 1013 mb
Low level cloud: 69%
Mid level cloud: 56%
High level cloud: 0%
Most Significant Cloud Type: low
88%
0.0 In
13:00

NW
NW

6 / 12 mph 67 / 67°F 69% 1020 mb
Low level cloud: 48%
Mid level cloud: 80%
High level cloud: 100%
Most Significant Cloud Type: low
87%
0.1 In
19:00

SSW
SSW

2 / 4 mph 60 / 60°F 98% 1010 mb
Low level cloud: 54%
Mid level cloud: 43%
High level cloud: 1%
Most Significant Cloud Type: low
68%
0.1 In
Fri 31
May
01:00

SSW
SSW

3 / 6 mph 52 / 52°F 97% 1021 mb
Low level cloud: 18%
Mid level cloud: 7%
High level cloud: 100%
Most Significant Cloud Type: low
32%
0.2 In
07:00

SW
SW

8 / 16 mph 56 / 54°F 95% 1011 mb
Low level cloud: 90%
Mid level cloud: 31%
High level cloud: 6%
Most Significant Cloud Type: low
100%
0.0 In
13:00

N
N

7 / 15 mph 75 / 78°F 54% 1021 mb
Low level cloud: 0%
Mid level cloud: 32%
High level cloud: 0%
Most Significant Cloud Type: medium
31%
0.0 In
19:00

SW
SW

6 / 13 mph 53 / 51°F 92% 1010 mb
Low level cloud: 2%
Mid level cloud: 22%
High level cloud: 0%
Most Significant Cloud Type: medium
26%
0.2 In
Sat 01
Jun
01:00

ESE
ESE

3 / 6 mph 51 / 51°F 87% 1023 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 5%
Most Significant Cloud Type: high
4%
0.0 In
07:00

WSW
WSW

7 / 14 mph 47 / 44°F 95% 1014 mb
Low level cloud: 54%
Mid level cloud: 50%
High level cloud: 0%
Most Significant Cloud Type: low
71%
0.0 In
13:00

NNE
NNE

7 / 15 mph 77 / 78°F 39% 1022 mb
Low level cloud: 0%
Mid level cloud: 15%
High level cloud: 25%
Most Significant Cloud Type: medium
16%
0.0 In
19:00

WSW
WSW

7 / 14 mph 54 / 53°F 93% 1015 mb
Low level cloud: 98%
Mid level cloud: 100%
High level cloud: 18%
Most Significant Cloud Type: low
100%
0.0 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