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Ramsar 14 Day Long Range Forecast

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

Iran

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

Reviewing the forecast for Ramsar Over the next 14 days and the average daytime maximum temperature will be around 13°C, with a high for the two weeks of 15°C expected on the afternoon of Saturday 28th. The mean minimum temperature will be 9°C, dipping to its lowest on the morning of Sunday 22nd at 6°C. Expect the next 14 days have some days seeing a little precipitation and some days with rain. The current forecast indicates Sunday 29th will have the most precipitation with an accumulation of around 11.0mm. On the whole winds are likely to be light.

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Sat 21
Dec		18:30

E
E

 2 / 3 mph 51 / 51°F 80% 1024 mb
Low level cloud: 30%
Mid level cloud: 16%
High level cloud: 5%
Most Significant Cloud Type: low
36%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:30

ESE
ESE

 0 / 0 mph 50 / 50°F 77% 1024 mb
Low level cloud: 7%
Mid level cloud: 8%
High level cloud: 17%
Most Significant Cloud Type: low
11%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 22
Dec		00:30

SSE
SSE

 2 / 3 mph 48 / 48°F 75% 1023 mb
Low level cloud: 1%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:30

SSE
SSE

 3 / 5 mph 45 / 44°F 73% 1021 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:30

SSE
SSE

 5 / 9 mph 44 / 41°F 72% 1020 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 5%
Most Significant Cloud Type: medium
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:30

ESE
ESE

 5 / 6 mph 56 / 54°F 72% 1020 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 5%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:30

ESE
ESE

 6 / 6 mph 59 / 57°F 72% 1017 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 3%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:30

ESE
ESE

 6 / 7 mph 59 / 57°F 74% 1016 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:30

SE
SE

 8 / 13 mph 48 / 44°F 69% 1017 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 1%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:30

SE
SE

 8 / 15 mph 46 / 42°F 68% 1017 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
1%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 23
Dec		00:30

SSE
SSE

 6 / 12 mph 47 / 44°F 69% 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
03:30

SSE
SSE

 6 / 12 mph 47 / 44°F 65% 1017 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:30

SSE
SSE

 5 / 9 mph 47 / 45°F 63% 1018 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 4%
Most Significant Cloud Type: high
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:30

ESE
ESE

 2 / 2 mph 56 / 56°F 62% 1019 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 6%
Most Significant Cloud Type: high
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:30

NE
NE

 3 / 3 mph 57 / 57°F 66% 1018 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 12%
Most Significant Cloud Type: high
11%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:30

E
E

 3 / 4 mph 56 / 56°F 72% 1019 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 100%
Most Significant Cloud Type: high
99%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:30

SE
SE

 3 / 4 mph 53 / 53°F 70% 1020 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 100%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:30

SE
SE

 3 / 4 mph 51 / 51°F 68% 1020 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 100%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 24
Dec		00:30

SSE
SSE

 3 / 4 mph 51 / 51°F 66% 1020 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: high
99%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:30

SE
SE

 3 / 5 mph 49 / 48°F 66% 1019 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: high
99%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:30

SSE
SSE

 3 / 6 mph 48 / 47°F 65% 1019 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: high
99%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:30

ESE
ESE

 3 / 4 mph 52 / 51°F 66% 1020 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 95%
Most Significant Cloud Type: high
95%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:30

ENE
ENE

 3 / 3 mph 55 / 56°F 68% 1019 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: high
99%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:30

E
E

 2 / 3 mph 58 / 58°F 72% 1019 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 78%
Most Significant Cloud Type: high
78%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:30

SE
SE

 1 / 1 mph 57 / 57°F 70% 1020 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 100%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:30

SSE
SSE

 2 / 2 mph 53 / 53°F 67% 1021 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 97%
Most Significant Cloud Type: high
96%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 25
Dec		00:30

W
W

 1 / 1 mph 52 / 52°F 66% 1021 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 93%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:30

W
W

 2 / 3 mph 50 / 51°F 65% 1022 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 6%
Most Significant Cloud Type: medium
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:30

W
W

 1 / 2 mph 48 / 48°F 66% 1023 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 3%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:30

N
N

 2 / 3 mph 51 / 51°F 66% 1024 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 2%
Most Significant Cloud Type: medium
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:30

N
N

 4 / 4 mph 54 / 53°F 72% 1023 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:30

NNE
NNE

 2 / 2 mph 56 / 57°F 79% 1023 mb
Low level cloud: 1%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:30

ESE
ESE

 1 / 1 mph 56 / 56°F 81% 1024 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:30

SSE
SSE

 1 / 1 mph 54 / 54°F 77% 1025 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 26
Dec		00:30

SSW
SSW

 1 / 1 mph 51 / 51°F 72% 1024 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:30

SSW
SSW

 1 / 2 mph 49 / 49°F 69% 1025 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:30

SSE
SSE

 2 / 3 mph 47 / 48°F 66% 1025 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
09:30

ESE
ESE

 3 / 3 mph 56 / 56°F 65% 1026 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 1%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:30

ENE
ENE

 3 / 4 mph 58 / 57°F 67% 1024 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:30

ESE
ESE

 4 / 5 mph 58 / 57°F 70% 1024 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 4%
Most Significant Cloud Type: high
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:30

SE
SE

 5 / 7 mph 51 / 49°F 68% 1025 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 92%
Most Significant Cloud Type: high
91%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:30

SE
SE

 6 / 10 mph 49 / 47°F 65% 1024 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: high
99%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 27
Dec		00:30

SSE
SSE

 4 / 6 mph 48 / 47°F 63% 1024 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 22%
Most Significant Cloud Type: high
21%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:30

S
S

 3 / 6 mph 47 / 46°F 63% 1025 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 11%
Most Significant Cloud Type: high
10%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:30

S
S

 3 / 6 mph 47 / 46°F 62% 1025 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: high
99%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:30

SSE
SSE

 1 / 2 mph 56 / 56°F 64% 1025 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: high
99%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:30

ENE
ENE

 1 / 1 mph 59 / 58°F 63% 1022 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 100%
Most Significant Cloud Type: medium
9%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:30

ESE
ESE

 3 / 3 mph 59 / 59°F 64% 1022 mb
Low level cloud: 0%
Mid level cloud: 30%
High level cloud: 100%
Most Significant Cloud Type: medium
33%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:30

S
S

 1 / 2 mph 51 / 51°F 61% 1022 mb
Low level cloud: 0%
Mid level cloud: 67%
High level cloud: 48%
Most Significant Cloud Type: medium
68%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:30

W
W

 2 / 2 mph 53 / 53°F 63% 1022 mb
Low level cloud: 0%
Mid level cloud: 59%
High level cloud: 100%
Most Significant Cloud Type: medium
62%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Sat 28
Dec		03:30

S
S

 1 / 1 mph 52 / 52°F 58% 1021 mb
Low level cloud: 0%
Mid level cloud: 29%
High level cloud: 32%
Most Significant Cloud Type: medium
30%
0.0 In
09:30

NNW
NNW

 2 / 2 mph 56 / 57°F 71% 1024 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 100%
Most Significant Cloud Type: medium
7%
0.0 In
15:30

ESE
ESE

 5 / 7 mph 54 / 53°F 80% 1025 mb
Low level cloud: 20%
Mid level cloud: 43%
High level cloud: 18%
Most Significant Cloud Type: low
37%
0.0 In
21:30

NW
NW

 5 / 6 mph 52 / 51°F 90% 1021 mb
Low level cloud: 76%
Mid level cloud: 89%
High level cloud: 92%
Most Significant Cloud Type: low
100%
0.0 In
Sun 29
Dec		03:30

N
N

 1 / 1 mph 49 / 49°F 85% 1023 mb
Low level cloud: 40%
Mid level cloud: 82%
High level cloud: 100%
Most Significant Cloud Type: low
81%
0.0 In
09:30

NW
NW

 2 / 3 mph 49 / 50°F 90% 1025 mb
Low level cloud: 59%
Mid level cloud: 76%
High level cloud: 33%
Most Significant Cloud Type: low
89%
0.0 In
15:30

E
E

 6 / 8 mph 52 / 50°F 87% 1023 mb
Low level cloud: 62%
Mid level cloud: 62%
High level cloud: 33%
Most Significant Cloud Type: low
88%
0.0 In
21:30

ENE
ENE

 6 / 9 mph 49 / 47°F 91% 1031 mb
Low level cloud: 84%
Mid level cloud: 45%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
Mon 30
Dec		03:30

E
E

 7 / 10 mph 48 / 45°F 90% 1027 mb
Low level cloud: 79%
Mid level cloud: 57%
High level cloud: 0%
Most Significant Cloud Type: low
98%
0.2 In
09:30

E
E

 7 / 11 mph 50 / 47°F 91% 1030 mb
Low level cloud: 64%
Mid level cloud: 45%
High level cloud: 0%
Most Significant Cloud Type: low
79%
0.1 In
15:30

ESE
ESE

 9 / 15 mph 51 / 47°F 89% 1027 mb
Low level cloud: 82%
Mid level cloud: 45%
High level cloud: 0%
Most Significant Cloud Type: low
97%
0.2 In
21:30

ESE
ESE

 8 / 13 mph 50 / 47°F 85% 1025 mb
Low level cloud: 46%
Mid level cloud: 17%
High level cloud: 0%
Most Significant Cloud Type: low
52%
0.0 In
Tue 31
Dec		03:30

SE
SE

 8 / 15 mph 49 / 45°F 78% 1028 mb
Low level cloud: 18%
Mid level cloud: 18%
High level cloud: 0%
Most Significant Cloud Type: low
23%
0.1 In
09:30

ESE
ESE

 5 / 8 mph 50 / 48°F 80% 1024 mb
Low level cloud: 20%
Mid level cloud: 13%
High level cloud: 0%
Most Significant Cloud Type: low
24%
0.0 In
15:30

ESE
ESE

 9 / 16 mph 53 / 50°F 77% 1025 mb
Low level cloud: 4%
Mid level cloud: 3%
High level cloud: 100%
Most Significant Cloud Type: medium
18%
0.0 In
21:30

SSW
SSW

 1 / 2 mph 51 / 51°F 84% 1026 mb
Low level cloud: 79%
Mid level cloud: 83%
High level cloud: 94%
Most Significant Cloud Type: low
100%
0.0 In
Wed 01
Jan		03:30

SSE
SSE

 6 / 11 mph 47 / 44°F 67% 1025 mb
Low level cloud: 0%
Mid level cloud: 23%
High level cloud: 80%
Most Significant Cloud Type: medium
26%
0.0 In
09:30

WNW
WNW

 13 / 24 mph 45 / 38°F 89% 1030 mb
Low level cloud: 79%
Mid level cloud: 70%
High level cloud: 32%
Most Significant Cloud Type: low
100%
0.4 In
15:30

E
E

 4 / 8 mph 53 / 52°F 76% 1024 mb
Low level cloud: 13%
Mid level cloud: 95%
High level cloud: 0%
Most Significant Cloud Type: medium
100%
0.0 In
21:30

NW
NW

 4 / 9 mph 46 / 44°F 94% 1031 mb
Low level cloud: 95%
Mid level cloud: 63%
High level cloud: 9%
Most Significant Cloud Type: low
100%
0.4 In
Thu 02
Jan		03:30

E
E

 2 / 4 mph 49 / 49°F 81% 1026 mb
Low level cloud: 55%
Mid level cloud: 45%
High level cloud: 0%
Most Significant Cloud Type: low
71%
0.0 In
09:30

NW
NW

 2 / 4 mph 44 / 44°F 91% 1028 mb
Low level cloud: 88%
Mid level cloud: 64%
High level cloud: 33%
Most Significant Cloud Type: low
100%
0.3 In
15:30

NNE
NNE

 2 / 3 mph 51 / 51°F 84% 1026 mb
Low level cloud: 88%
Mid level cloud: 65%
High level cloud: 12%
Most Significant Cloud Type: low
100%
0.1 In
21:30

W
W

 4 / 7 mph 44 / 42°F 86% 1021 mb
Low level cloud: 41%
Mid level cloud: 95%
High level cloud: 100%
Most Significant Cloud Type: low
86%
0.1 In
Fri 03
Jan		03:30

WNW
WNW

 2 / 4 mph 45 / 46°F 86% 1025 mb
Low level cloud: 75%
Mid level cloud: 57%
High level cloud: 49%
Most Significant Cloud Type: low
100%
0.1 In
09:30

SE
SE

 5 / 10 mph 43 / 41°F 78% 1017 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
5%
0.0 In
15:30

NNW
NNW

 8 / 16 mph 47 / 43°F 90% 1026 mb
Low level cloud: 95%
Mid level cloud: 56%
High level cloud: 56%
Most Significant Cloud Type: low
100%
0.4 In
21:30

S
S

 7 / 14 mph 44 / 40°F 66% 1015 mb
Low level cloud: 0%
Mid level cloud: 84%
High level cloud: 33%
Most Significant Cloud Type: medium
85%
0.0 In
Sat 04
Jan		03:30

W
W

 4 / 8 mph 44 / 42°F 79% 1029 mb
Low level cloud: 29%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
45%
0.3 In
09:30

WNW
WNW

 2 / 3 mph 53 / 53°F 68% 1020 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 2%
Most Significant Cloud Type: medium
5%
0.0 In
15:30

SE
SE

 9 / 18 mph 51 / 48°F 72% 1023 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 7%
Most Significant Cloud Type: medium
7%
0.0 In
21:30

SSE
SSE

 6 / 12 mph 44 / 40°F 73% 1017 mb
Low level cloud: 0%
Mid level cloud: 99%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
0.0 In
Sun 05
Jan		03:30

SSW
SSW

 3 / 7 mph 44 / 43°F 55% 1026 mb
Low level cloud: 0%
Mid level cloud: 21%
High level cloud: 49%
Most Significant Cloud Type: medium
23%
0.0 In
09:30

NW
NW

 6 / 12 mph 46 / 44°F 83% 1021 mb
Low level cloud: 31%
Mid level cloud: 57%
High level cloud: 98%
Most Significant Cloud Type: low
62%
0.0 In
15:30

ESE
ESE

 7 / 15 mph 54 / 53°F 68% 1025 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
21:30

NNE
NNE

 5 / 11 mph 47 / 45°F 92% 1027 mb
Low level cloud: 96%
Mid level cloud: 78%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.5 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