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Carnassarie 14 Day Long Range Forecast

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

Argyll and Bute, United Kingdom

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

The forecast for Carnassarie in the coming two weeks is predicting the average daytime maximum temperature will be around 18°C, with a high for the two weeks of 22°C expected on the afternoon of Tuesday 21st. The average minimum temperature will be 9°C, dipping to its lowest on the morning of Monday 27th at 7°C. Expect the next 14 days have some days seeing a little precipitation and some days with rain. It looks like Thursday 23rd will have the most precipitation with an accumulation of around 10.0mm. On the whole winds are likely to be light.

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Sat 18
May		18:00

W
W

 5 / 6 mph 62 / 60°F 79% 1017 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 60%
Most Significant Cloud Type: medium
9%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

NW
NW

 4 / 8 mph 52 / 50°F 89% 1018 mb
Low level cloud: 1%
Mid level cloud: 16%
High level cloud: 99%
Most Significant Cloud Type: medium
21%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 19
May		00:00

NNW
NNW

 3 / 6 mph 47 / 47°F 89% 1018 mb
Low level cloud: 0%
Mid level cloud: 23%
High level cloud: 92%
Most Significant Cloud Type: medium
26%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

NNW
NNW

 2 / 5 mph 47 / 47°F 89% 1018 mb
Low level cloud: 0%
Mid level cloud: 41%
High level cloud: 32%
Most Significant Cloud Type: medium
42%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

NNW
NNW

 2 / 4 mph 52 / 51°F 87% 1018 mb
Low level cloud: 11%
Mid level cloud: 53%
High level cloud: 93%
Most Significant Cloud Type: medium
85%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

WNW
WNW

 2 / 2 mph 64 / 61°F 78% 1018 mb
Low level cloud: 36%
Mid level cloud: 44%
High level cloud: 78%
Most Significant Cloud Type: low
60%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

WSW
WSW

 5 / 6 mph 66 / 63°F 77% 1018 mb
Low level cloud: 27%
Mid level cloud: 43%
High level cloud: 50%
Most Significant Cloud Type: low
47%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SW
SW

 6 / 7 mph 63 / 60°F 80% 1017 mb
Low level cloud: 1%
Mid level cloud: 32%
High level cloud: 35%
Most Significant Cloud Type: medium
37%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SSW
SSW

 5 / 6 mph 59 / 56°F 85% 1018 mb
Low level cloud: 6%
Mid level cloud: 14%
High level cloud: 36%
Most Significant Cloud Type: low
15%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SW
SW

 2 / 4 mph 49 / 48°F 95% 1018 mb
Low level cloud: 48%
Mid level cloud: 16%
High level cloud: 42%
Most Significant Cloud Type: low
58%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 20
May		00:00

NNE
NNE

 1 / 3 mph 49 / 49°F 92% 1017 mb
Low level cloud: 57%
Mid level cloud: 19%
High level cloud: 32%
Most Significant Cloud Type: low
67%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

ENE
ENE

 0 / 1 mph 50 / 50°F 93% 1017 mb
Low level cloud: 53%
Mid level cloud: 28%
High level cloud: 33%
Most Significant Cloud Type: low
66%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

S
S

 1 / 2 mph 55 / 53°F 91% 1017 mb
Low level cloud: 46%
Mid level cloud: 43%
High level cloud: 20%
Most Significant Cloud Type: low
63%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SSE
SSE

 2 / 2 mph 63 / 60°F 84% 1016 mb
Low level cloud: 48%
Mid level cloud: 44%
High level cloud: 16%
Most Significant Cloud Type: low
65%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SSW
SSW

 3 / 4 mph 68 / 65°F 73% 1016 mb
Low level cloud: 50%
Mid level cloud: 46%
High level cloud: 15%
Most Significant Cloud Type: low
68%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SW
SW

 4 / 5 mph 67 / 64°F 74% 1015 mb
Low level cloud: 48%
Mid level cloud: 27%
High level cloud: 20%
Most Significant Cloud Type: low
59%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SSW
SSW

 3 / 4 mph 64 / 61°F 79% 1014 mb
Low level cloud: 44%
Mid level cloud: 45%
High level cloud: 11%
Most Significant Cloud Type: low
60%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SSW
SSW

 2 / 3 mph 60 / 57°F 84% 1014 mb
Low level cloud: 33%
Mid level cloud: 44%
High level cloud: 33%
Most Significant Cloud Type: low
52%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 21
May		00:00

ESE
ESE

 1 / 2 mph 52 / 52°F 88% 1013 mb
Low level cloud: 52%
Mid level cloud: 18%
High level cloud: 1%
Most Significant Cloud Type: low
58%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

ENE
ENE

 2 / 5 mph 50 / 51°F 91% 1013 mb
Low level cloud: 41%
Mid level cloud: 4%
High level cloud: 1%
Most Significant Cloud Type: low
42%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

ENE
ENE

 4 / 6 mph 54 / 51°F 87% 1012 mb
Low level cloud: 19%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: low
20%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

NNE
NNE

 2 / 2 mph 66 / 64°F 72% 1011 mb
Low level cloud: 15%
Mid level cloud: 5%
High level cloud: 7%
Most Significant Cloud Type: low
18%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

W
W

 2 / 2 mph 72 / 68°F 61% 1010 mb
Low level cloud: 1%
Mid level cloud: 17%
High level cloud: 22%
Most Significant Cloud Type: medium
19%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SW
SW

 7 / 8 mph 66 / 64°F 64% 1009 mb
Low level cloud: 0%
Mid level cloud: 69%
High level cloud: 33%
Most Significant Cloud Type: medium
70%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SSW
SSW

 3 / 7 mph 55 / 55°F 76% 1009 mb
Low level cloud: 14%
Mid level cloud: 50%
High level cloud: 18%
Most Significant Cloud Type: medium
90%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SSE
SSE

 1 / 2 mph 54 / 52°F 80% 1010 mb
Low level cloud: 32%
Mid level cloud: 44%
High level cloud: 6%
Most Significant Cloud Type: low
48%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 22
May		00:00

SSE
SSE

 2 / 4 mph 50 / 51°F 83% 1009 mb
Low level cloud: 19%
Mid level cloud: 45%
High level cloud: 0%
Most Significant Cloud Type: low
34%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SE
SE

 2 / 3 mph 51 / 51°F 83% 1009 mb
Low level cloud: 16%
Mid level cloud: 66%
High level cloud: 3%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SE
SE

 0 / 1 mph 55 / 53°F 83% 1010 mb
Low level cloud: 19%
Mid level cloud: 31%
High level cloud: 100%
Most Significant Cloud Type: low
41%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

WNW
WNW

 0 / 1 mph 56 / 54°F 84% 1011 mb
Low level cloud: 25%
Mid level cloud: 44%
High level cloud: 100%
Most Significant Cloud Type: low
52%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

WSW
WSW

 4 / 5 mph 64 / 61°F 72% 1010 mb
Low level cloud: 8%
Mid level cloud: 25%
High level cloud: 100%
Most Significant Cloud Type: medium
50%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

W
W

 4 / 5 mph 61 / 59°F 78% 1009 mb
Low level cloud: 19%
Mid level cloud: 55%
High level cloud: 100%
Most Significant Cloud Type: low
50%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NNW
NNW

 3 / 6 mph 56 / 55°F 89% 1009 mb
Low level cloud: 49%
Mid level cloud: 49%
High level cloud: 100%
Most Significant Cloud Type: low
78%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

NNW
NNW

 5 / 11 mph 53 / 51°F 92% 1008 mb
Low level cloud: 21%
Mid level cloud: 70%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 23
May		00:00

NNW
NNW

 6 / 10 mph 54 / 52°F 96% 1007 mb
Low level cloud: 37%
Mid level cloud: 82%
High level cloud: 100%
Most Significant Cloud Type: low
77%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

NW
NW

 8 / 13 mph 52 / 49°F 97% 1006 mb
Low level cloud: 76%
Mid level cloud: 95%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.3 In of precipitation over the past 3 hours.
0.3 In
06:00

NNW
NNW

 10 / 18 mph 51 / 46°F 94% 1005 mb
Low level cloud: 75%
Mid level cloud: 69%
High level cloud: 10%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
09:00

NNW
NNW

 9 / 12 mph 55 / 51°F 90% 1004 mb
Low level cloud: 71%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
86%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

NE
NE

 8 / 9 mph 58 / 56°F 87% 1004 mb
Low level cloud: 82%
Mid level cloud: 48%
High level cloud: 0%
Most Significant Cloud Type: low
98%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NNE
NNE

 6 / 7 mph 60 / 59°F 92% 1004 mb
Low level cloud: 81%
Mid level cloud: 44%
High level cloud: 12%
Most Significant Cloud Type: low
97%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NE
NE

 5 / 6 mph 58 / 57°F 93% 1005 mb
Low level cloud: 87%
Mid level cloud: 64%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

ENE
ENE

 5 / 9 mph 56 / 54°F 91% 1007 mb
Low level cloud: 70%
Mid level cloud: 55%
High level cloud: 0%
Most Significant Cloud Type: low
89%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 24
May		00:00

ESE
ESE

 6 / 11 mph 51 / 49°F 89% 1009 mb
Low level cloud: 23%
Mid level cloud: 32%
High level cloud: 0%
Most Significant Cloud Type: low
34%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

E
E

 8 / 16 mph 50 / 46°F 85% 1010 mb
Low level cloud: 73%
Mid level cloud: 54%
High level cloud: 0%
Most Significant Cloud Type: low
91%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

ESE
ESE

 14 / 28 mph 49 / 43°F 79% 1010 mb
Low level cloud: 74%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
90%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SE
SE

 15 / 25 mph 52 / 47°F 74% 1012 mb
Low level cloud: 79%
Mid level cloud: 42%
High level cloud: 2%
Most Significant Cloud Type: low
93%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SE
SE

 14 / 20 mph 55 / 51°F 74% 1014 mb
Low level cloud: 58%
Mid level cloud: 62%
High level cloud: 37%
Most Significant Cloud Type: low
84%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SSE
SSE

 13 / 15 mph 57 / 53°F 74% 1015 mb
Low level cloud: 64%
Mid level cloud: 67%
High level cloud: 10%
Most Significant Cloud Type: low
88%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SSE
SSE

 10 / 12 mph 55 / 52°F 77% 1017 mb
Low level cloud: 80%
Mid level cloud: 78%
High level cloud: 22%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SSE
SSE

 7 / 9 mph 53 / 50°F 82% 1018 mb
Low level cloud: 62%
Mid level cloud: 87%
High level cloud: 2%
Most Significant Cloud Type: low
92%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Sat 25
May		00:00

ENE
ENE

 5 / 10 mph 51 / 49°F 93% 1025 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 2%
Most Significant Cloud Type: high
2%
0.0 In
06:00

SE
SE

 5 / 9 mph 52 / 51°F 84% 1020 mb
Low level cloud: 100%
Mid level cloud: 30%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
12:00

S
S

 12 / 18 mph 52 / 48°F 83% 1014 mb
Low level cloud: 96%
Mid level cloud: 96%
High level cloud: 10%
Most Significant Cloud Type: low
100%
0.0 In
18:00

S
S

 9 / 15 mph 59 / 57°F 63% 1016 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 100%
Most Significant Cloud Type: medium
9%
0.0 In
Sun 26
May		00:00

NE
NE

 5 / 11 mph 53 / 52°F 81% 1015 mb
Low level cloud: 17%
Mid level cloud: 90%
High level cloud: 21%
Most Significant Cloud Type: medium
100%
0.0 In
06:00

SSE
SSE

 6 / 12 mph 51 / 49°F 92% 1016 mb
Low level cloud: 97%
Mid level cloud: 89%
High level cloud: 84%
Most Significant Cloud Type: low
100%
0.0 In
12:00

N
N

 2 / 4 mph 58 / 60°F 73% 1009 mb
Low level cloud: 48%
Mid level cloud: 56%
High level cloud: 10%
Most Significant Cloud Type: low
68%
0.0 In
18:00

SW
SW

 4 / 9 mph 63 / 63°F 67% 1015 mb
Low level cloud: 1%
Mid level cloud: 31%
High level cloud: 54%
Most Significant Cloud Type: medium
34%
0.0 In
Mon 27
May		00:00

ESE
ESE

 5 / 10 mph 47 / 45°F 94% 1011 mb
Low level cloud: 11%
Mid level cloud: 14%
High level cloud: 19%
Most Significant Cloud Type: low
17%
0.0 In
06:00

NE
NE

 4 / 9 mph 55 / 54°F 87% 1015 mb
Low level cloud: 7%
Mid level cloud: 24%
High level cloud: 100%
Most Significant Cloud Type: medium
46%
0.0 In
12:00

SSW
SSW

 4 / 9 mph 58 / 58°F 76% 1008 mb
Low level cloud: 33%
Mid level cloud: 31%
High level cloud: 3%
Most Significant Cloud Type: low
44%
0.1 In
18:00

SW
SW

 3 / 6 mph 60 / 60°F 80% 1014 mb
Low level cloud: 26%
Mid level cloud: 32%
High level cloud: 3%
Most Significant Cloud Type: low
37%
0.1 In
Tue 28
May		00:00

E
E

 2 / 5 mph 48 / 48°F 91% 1004 mb
Low level cloud: 56%
Mid level cloud: 56%
High level cloud: 100%
Most Significant Cloud Type: low
87%
0.1 In
06:00

ENE
ENE

 3 / 6 mph 54 / 55°F 90% 1013 mb
Low level cloud: 3%
Mid level cloud: 35%
High level cloud: 100%
Most Significant Cloud Type: medium
46%
0.0 In
12:00

SW
SW

 8 / 16 mph 54 / 52°F 89% 1004 mb
Low level cloud: 58%
Mid level cloud: 22%
High level cloud: 88%
Most Significant Cloud Type: low
76%
0.1 In
18:00

SSW
SSW

 3 / 7 mph 56 / 56°F 90% 1012 mb
Low level cloud: 70%
Mid level cloud: 63%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.1 In
Wed 29
May		00:00

SSE
SSE

 3 / 7 mph 48 / 47°F 93% 1003 mb
Low level cloud: 47%
Mid level cloud: 48%
High level cloud: 11%
Most Significant Cloud Type: low
65%
0.1 In
06:00

E
E

 2 / 3 mph 52 / 52°F 95% 1011 mb
Low level cloud: 43%
Mid level cloud: 37%
High level cloud: 10%
Most Significant Cloud Type: low
57%
0.1 In
12:00

WSW
WSW

 8 / 17 mph 55 / 53°F 75% 1006 mb
Low level cloud: 10%
Mid level cloud: 23%
High level cloud: 32%
Most Significant Cloud Type: low
21%
0.1 In
18:00

WSW
WSW

 4 / 9 mph 59 / 59°F 81% 1009 mb
Low level cloud: 7%
Mid level cloud: 36%
High level cloud: 4%
Most Significant Cloud Type: medium
56%
0.1 In
Thu 30
May		00:00

NW
NW

 1 / 2 mph 48 / 48°F 92% 1011 mb
Low level cloud: 13%
Mid level cloud: 28%
High level cloud: 0%
Most Significant Cloud Type: low
22%
0.1 In
06:00

ESE
ESE

 1 / 2 mph 52 / 52°F 92% 1008 mb
Low level cloud: 55%
Mid level cloud: 49%
High level cloud: 0%
Most Significant Cloud Type: low
72%
0.0 In
12:00

WSW
WSW

 4 / 8 mph 53 / 53°F 85% 1015 mb
Low level cloud: 26%
Mid level cloud: 37%
High level cloud: 2%
Most Significant Cloud Type: low
39%
0.0 In
18:00

NE
NE

 4 / 9 mph 57 / 57°F 87% 1006 mb
Low level cloud: 75%
Mid level cloud: 48%
High level cloud: 14%
Most Significant Cloud Type: low
93%
0.1 In
Fri 31
May		00:00

SSW
SSW

 2 / 4 mph 51 / 52°F 96% 1017 mb
Low level cloud: 49%
Mid level cloud: 23%
High level cloud: 0%
Most Significant Cloud Type: low
57%
0.1 In
06:00

NE
NE

 6 / 12 mph 51 / 49°F 91% 1003 mb
Low level cloud: 5%
Mid level cloud: 30%
High level cloud: 82%
Most Significant Cloud Type: medium
47%
0.0 In
12:00

SW
SW

 2 / 4 mph 55 / 55°F 72% 1019 mb
Low level cloud: 13%
Mid level cloud: 12%
High level cloud: 22%
Most Significant Cloud Type: low
20%
0.0 In
18:00

NNE
NNE

 3 / 5 mph 58 / 59°F 97% 1002 mb
Low level cloud: 55%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.2 In
Sat 01
Jun		00:00

ESE
ESE

 5 / 10 mph 52 / 50°F 90% 1016 mb
Low level cloud: 98%
Mid level cloud: 90%
High level cloud: 32%
Most Significant Cloud Type: low
100%
0.1 In
06:00

NNE
NNE

 6 / 13 mph 51 / 48°F 95% 1004 mb
Low level cloud: 91%
Mid level cloud: 95%
High level cloud: 83%
Most Significant Cloud Type: low
100%
0.6 In
12:00

ENE
ENE

 6 / 12 mph 55 / 54°F 92% 1012 mb
Low level cloud: 100%
Mid level cloud: 96%
High level cloud: 90%
Most Significant Cloud Type: low
100%
0.1 In
18:00

NE
NE

 8 / 17 mph 56 / 54°F 88% 1007 mb
Low level cloud: 47%
Mid level cloud: 54%
High level cloud: 93%
Most Significant Cloud Type: low
77%
0.3 In
Sun 02
Jun		00:00

ENE
ENE

 5 / 11 mph 49 / 47°F 97% 1007 mb
Low level cloud: 100%
Mid level cloud: 75%
High level cloud: 6%
Most Significant Cloud Type: low
100%
0.2 In
06:00

NE
NE

 4 / 9 mph 48 / 47°F 93% 1008 mb
Low level cloud: 85%
Mid level cloud: 90%
High level cloud: 68%
Most Significant Cloud Type: low
100%
0.2 In
12:00

SSW
SSW

 10 / 22 mph 59 / 59°F 92% 997 mb
Low level cloud: 41%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
57%
0.4 In
18:00

WSW
WSW

 3 / 6 mph 54 / 54°F 81% 1011 mb
Low level cloud: 22%
Mid level cloud: 55%
High level cloud: 54%
Most Significant Cloud Type: low
47%
0.1 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