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Newcastle 14 Day Long Range Forecast

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

Limerick, Ireland

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

The outlook for Newcastle in the two weeks ahead shows the average daytime maximum temperature will be around 8°C, with a high for the two weeks of 10°C expected on the afternoon of Thursday 29th. The mean minimum temperature will be 3°C, dipping to its lowest on the morning of Wednesday 28th at 1°C. The next 14 days will have some days seeing a little precipitation and some days with rain. Current predictions suggest Thursday 29th will have the most precipitation with an accumulation of around 14.0mm. On the whole winds are likely to be moderate. The strongest wind will be felt on the evening of Thursday 29th, coming from a south westerly direction, and reaching around 33mph. The forecast suggests the maximum gusts will be on Friday morning.

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Wed 21
Jan		18:00

ESE
ESE

 2 / 4 mph 44 / 43°F 98% 975 mb
Low level cloud: 83%
Mid level cloud: 54%
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

WSW
WSW

 3 / 5 mph 42 / 41°F 97% 977 mb
Low level cloud: 95%
Mid level cloud: 45%
High level cloud: 2%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 22
Jan		00:00

WSW
WSW

 6 / 9 mph 43 / 39°F 96% 980 mb
Low level cloud: 91%
Mid level cloud: 88%
High level cloud: 16%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

W
W

 5 / 8 mph 43 / 40°F 95% 982 mb
Low level cloud: 81%
Mid level cloud: 45%
High level cloud: 74%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SW
SW

 3 / 6 mph 40 / 38°F 94% 984 mb
Low level cloud: 76%
Mid level cloud: 69%
High level cloud: 33%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

WSW
WSW

 5 / 9 mph 41 / 38°F 94% 985 mb
Low level cloud: 67%
Mid level cloud: 97%
High level cloud: 1%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

W
W

 9 / 12 mph 45 / 40°F 90% 985 mb
Low level cloud: 69%
Mid level cloud: 44%
High level cloud: 5%
Most Significant Cloud Type: low
85%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

WNW
WNW

 8 / 10 mph 45 / 40°F 90% 984 mb
Low level cloud: 41%
Mid level cloud: 45%
High level cloud: 5%
Most Significant Cloud Type: low
57%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

N
N

 2 / 4 mph 38 / 38°F 94% 982 mb
Low level cloud: 16%
Mid level cloud: 15%
High level cloud: 0%
Most Significant Cloud Type: low
21%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

ENE
ENE

 2 / 4 mph 36 / 35°F 95% 980 mb
Low level cloud: 26%
Mid level cloud: 14%
High level cloud: 32%
Most Significant Cloud Type: low
34%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 23
Jan		00:00

ENE
ENE

 4 / 9 mph 34 / 31°F 97% 978 mb
Low level cloud: 37%
Mid level cloud: 21%
High level cloud: 84%
Most Significant Cloud Type: low
54%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

NE
NE

 8 / 15 mph 36 / 30°F 95% 976 mb
Low level cloud: 21%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

ENE
ENE

 15 / 22 mph 41 / 33°F 94% 973 mb
Low level cloud: 100%
Mid level cloud: 91%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

E
E

 12 / 19 mph 42 / 35°F 90% 973 mb
Low level cloud: 85%
Mid level cloud: 55%
High level cloud: 32%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

E
E

 13 / 17 mph 43 / 36°F 89% 973 mb
Low level cloud: 93%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
15:00

ENE
ENE

 19 / 27 mph 43 / 35°F 84% 972 mb
Low level cloud: 90%
Mid level cloud: 69%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NE
NE

 21 / 30 mph 41 / 32°F 94% 971 mb
Low level cloud: 99%
Mid level cloud: 91%
High level cloud: 10%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

NE
NE

 22 / 32 mph 39 / 29°F 96% 969 mb
Low level cloud: 100%
Mid level cloud: 88%
High level cloud: 22%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
Sat 24
Jan		00:00

NE
NE

 20 / 30 mph 44 / 35°F 90% 966 mb
Low level cloud: 96%
Mid level cloud: 45%
High level cloud: 32%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SE
SE

 21 / 31 mph 41 / 32°F 92% 970 mb
Low level cloud: 99%
Mid level cloud: 64%
High level cloud: 98%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SE
SE

 19 / 28 mph 43 / 35°F 91% 974 mb
Low level cloud: 92%
Mid level cloud: 45%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
09:00

SE
SE

 15 / 21 mph 43 / 36°F 92% 978 mb
Low level cloud: 93%
Mid level cloud: 79%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
12:00

SE
SE

 13 / 17 mph 45 / 39°F 91% 981 mb
Low level cloud: 34%
Mid level cloud: 66%
High level cloud: 100%
Most Significant Cloud Type: low
68%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

S
S

 10 / 15 mph 45 / 40°F 88% 982 mb
Low level cloud: 81%
Mid level cloud: 73%
High level cloud: 36%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

S
S

 7 / 12 mph 43 / 39°F 92% 984 mb
Low level cloud: 60%
Mid level cloud: 49%
High level cloud: 35%
Most Significant Cloud Type: low
80%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
21:00

SSE
SSE

 6 / 11 mph 40 / 36°F 93% 986 mb
Low level cloud: 11%
Mid level cloud: 44%
High level cloud: 100%
Most Significant Cloud Type: medium
79%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 25
Jan		00:00

SE
SE

 8 / 16 mph 37 / 31°F 94% 986 mb
Low level cloud: 2%
Mid level cloud: 18%
High level cloud: 0%
Most Significant Cloud Type: medium
23%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SE
SE

 9 / 18 mph 36 / 30°F 93% 985 mb
Low level cloud: 4%
Mid level cloud: 24%
High level cloud: 0%
Most Significant Cloud Type: medium
36%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SSE
SSE

 7 / 12 mph 39 / 33°F 95% 986 mb
Low level cloud: 81%
Mid level cloud: 29%
High level cloud: 11%
Most Significant Cloud Type: low
92%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SE
SE

 5 / 9 mph 38 / 34°F 97% 988 mb
Low level cloud: 40%
Mid level cloud: 29%
High level cloud: 32%
Most Significant Cloud Type: low
54%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SE
SE

 4 / 6 mph 43 / 40°F 89% 992 mb
Low level cloud: 42%
Mid level cloud: 13%
High level cloud: 32%
Most Significant Cloud Type: low
49%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SSW
SSW

 4 / 6 mph 46 / 43°F 88% 995 mb
Low level cloud: 27%
Mid level cloud: 44%
High level cloud: 24%
Most Significant Cloud Type: low
45%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SSE
SSE

 5 / 11 mph 39 / 35°F 95% 997 mb
Low level cloud: 87%
Mid level cloud: 44%
High level cloud: 2%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SSE
SSE

 5 / 10 mph 40 / 37°F 95% 999 mb
Low level cloud: 71%
Mid level cloud: 29%
High level cloud: 81%
Most Significant Cloud Type: low
91%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 26
Jan		00:00

SE
SE

 6 / 13 mph 39 / 34°F 95% 999 mb
Low level cloud: 14%
Mid level cloud: 97%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SSE
SSE

 13 / 22 mph 41 / 34°F 89% 997 mb
Low level cloud: 79%
Mid level cloud: 99%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SSE
SSE

 20 / 28 mph 41 / 31°F 94% 994 mb
Low level cloud: 100%
Mid level cloud: 87%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
09:00

SE
SE

 19 / 28 mph 42 / 34°F 94% 991 mb
Low level cloud: 100%
Mid level cloud: 57%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
12:00

SE
SE

 17 / 25 mph 47 / 40°F 97% 986 mb
Low level cloud: 100%
Mid level cloud: 31%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

W
W

 17 / 23 mph 44 / 36°F 93% 982 mb
Low level cloud: 96%
Mid level cloud: 49%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
18:00

SSE
SSE

 4 / 6 mph 41 / 38°F 96% 982 mb
Low level cloud: 88%
Mid level cloud: 93%
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

WSW
WSW

 2 / 3 mph 41 / 41°F 97% 981 mb
Low level cloud: 82%
Mid level cloud: 97%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 27
Jan		00:00

S
S

 8 / 11 mph 40 / 35°F 95% 981 mb
Low level cloud: 99%
Mid level cloud: 48%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SW
SW

 9 / 14 mph 41 / 35°F 90% 981 mb
Low level cloud: 13%
Mid level cloud: 44%
High level cloud: 94%
Most Significant Cloud Type: medium
83%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
06:00

SW
SW

 9 / 17 mph 39 / 33°F 88% 982 mb
Low level cloud: 0%
Mid level cloud: 32%
High level cloud: 6%
Most Significant Cloud Type: medium
32%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

S
S

 6 / 12 mph 35 / 30°F 92% 983 mb
Low level cloud: 2%
Mid level cloud: 11%
High level cloud: 4%
Most Significant Cloud Type: medium
15%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SSW
SSW

 7 / 9 mph 44 / 39°F 84% 985 mb
Low level cloud: 0%
Mid level cloud: 12%
High level cloud: 33%
Most Significant Cloud Type: medium
14%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SW
SW

 10 / 13 mph 44 / 39°F 85% 985 mb
Low level cloud: 41%
Mid level cloud: 70%
High level cloud: 32%
Most Significant Cloud Type: low
69%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SSW
SSW

 6 / 14 mph 38 / 33°F 90% 987 mb
Low level cloud: 3%
Mid level cloud: 18%
High level cloud: 9%
Most Significant Cloud Type: medium
27%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SSE
SSE

 6 / 13 mph 35 / 29°F 93% 988 mb
Low level cloud: 2%
Mid level cloud: 30%
High level cloud: 8%
Most Significant Cloud Type: medium
36%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Wed 28
Jan		00:00

SSW
SSW

 4 / 8 mph 40 / 37°F 96% 994 mb
Low level cloud: 34%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
49%
0.0 In
06:00

NE
NE

 14 / 23 mph 35 / 25°F 82% 998 mb
Low level cloud: 99%
Mid level cloud: 24%
High level cloud: 35%
Most Significant Cloud Type: low
100%
0.0 In
12:00

ENE
ENE

 18 / 30 mph 35 / 25°F 70% 982 mb
Low level cloud: 91%
Mid level cloud: 100%
High level cloud: 20%
Most Significant Cloud Type: low
100%
0.0 In
18:00

ENE
ENE

 2 / 5 mph 40 / 39°F 91% 998 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 12%
Most Significant Cloud Type: medium
5%
0.0 In
Thu 29
Jan		00:00

SE
SE

 15 / 29 mph 40 / 31°F 92% 986 mb
Low level cloud: 92%
Mid level cloud: 51%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
06:00

NE
NE

 10 / 21 mph 34 / 26°F 90% 981 mb
Low level cloud: 85%
Mid level cloud: 45%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
12:00

ENE
ENE

 10 / 18 mph 38 / 32°F 91% 982 mb
Low level cloud: 34%
Mid level cloud: 97%
High level cloud: 22%
Most Significant Cloud Type: low
70%
0.0 In
18:00

NNE
NNE

 21 / 45 mph 41 / 31°F 96% 964 mb
Low level cloud: 100%
Mid level cloud: 53%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
Fri 30
Jan		00:00

WSW
WSW

 30 / 64 mph 42 / 31°F 74% 988 mb
Low level cloud: 53%
Mid level cloud: 4%
High level cloud: 32%
Most Significant Cloud Type: low
58%
0.0 In
06:00

WNW
WNW

 7 / 15 mph 38 / 33°F 90% 989 mb
Low level cloud: 0%
Mid level cloud: 27%
High level cloud: 100%
Most Significant Cloud Type: medium
31%
0.1 In
12:00

SW
SW

 15 / 32 mph 46 / 39°F 91% 992 mb
Low level cloud: 51%
Mid level cloud: 58%
High level cloud: 0%
Most Significant Cloud Type: low
71%
0.2 In
18:00

W
W

 2 / 4 mph 45 / 45°F 89% 996 mb
Low level cloud: 29%
Mid level cloud: 89%
High level cloud: 14%
Most Significant Cloud Type: medium
100%
0.1 In
Sat 31
Jan		00:00

WSW
WSW

 16 / 33 mph 43 / 35°F 76% 994 mb
Low level cloud: 4%
Mid level cloud: 44%
High level cloud: 32%
Most Significant Cloud Type: medium
55%
0.1 In
06:00

SSE
SSE

 4 / 7 mph 35 / 32°F 93% 999 mb
Low level cloud: 1%
Mid level cloud: 23%
High level cloud: 17%
Most Significant Cloud Type: medium
27%
0.0 In
12:00

WSW
WSW

 10 / 21 mph 47 / 42°F 82% 995 mb
Low level cloud: 55%
Mid level cloud: 25%
High level cloud: 0%
Most Significant Cloud Type: low
63%
0.0 In
18:00

NE
NE

 2 / 4 mph 44 / 44°F 94% 1003 mb
Low level cloud: 13%
Mid level cloud: 0%
High level cloud: 5%
Most Significant Cloud Type: low
13%
0.0 In
Sun 01
Feb		00:00

W
W

 13 / 26 mph 44 / 38°F 93% 1005 mb
Low level cloud: 49%
Mid level cloud: 53%
High level cloud: 46%
Most Significant Cloud Type: low
73%
0.1 In
06:00

N
N

 4 / 8 mph 33 / 30°F 96% 1011 mb
Low level cloud: 35%
Mid level cloud: 14%
High level cloud: 0%
Most Significant Cloud Type: low
40%
0.0 In
12:00

WNW
WNW

 15 / 32 mph 46 / 40°F 84% 1015 mb
Low level cloud: 31%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: low
46%
0.1 In
18:00

NNW
NNW

 4 / 7 mph 40 / 37°F 91% 1017 mb
Low level cloud: 4%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: low
5%
0.0 In
Mon 02
Feb		00:00

SW
SW

 3 / 6 mph 41 / 40°F 90% 1020 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
06:00

SE
SE

 5 / 10 mph 31 / 26°F 94% 1016 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 33%
Most Significant Cloud Type: high
32%
0.0 In
12:00

ESE
ESE

 9 / 19 mph 43 / 38°F 81% 1019 mb
Low level cloud: 4%
Mid level cloud: 44%
High level cloud: 18%
Most Significant Cloud Type: medium
55%
0.0 In
18:00

SE
SE

 15 / 32 mph 43 / 35°F 81% 1007 mb
Low level cloud: 89%
Mid level cloud: 62%
High level cloud: 91%
Most Significant Cloud Type: low
100%
0.0 In
Tue 03
Feb		00:00

ESE
ESE

 15 / 32 mph 43 / 35°F 82% 1015 mb
Low level cloud: 60%
Mid level cloud: 16%
High level cloud: 100%
Most Significant Cloud Type: low
77%
0.0 In
06:00

SE
SE

 22 / 46 mph 42 / 32°F 93% 996 mb
Low level cloud: 100%
Mid level cloud: 99%
High level cloud: 32%
Most Significant Cloud Type: low
100%
0.4 In
12:00

ESE
ESE

 17 / 35 mph 42 / 34°F 80% 1015 mb
Low level cloud: 99%
Mid level cloud: 76%
High level cloud: 98%
Most Significant Cloud Type: low
100%
0.0 In
18:00

WSW
WSW

 10 / 21 mph 46 / 42°F 94% 990 mb
Low level cloud: 72%
Mid level cloud: 37%
High level cloud: 100%
Most Significant Cloud Type: low
96%
0.5 In
Wed 04
Feb		00:00

SE
SE

 20 / 42 mph 43 / 34°F 78% 1017 mb
Low level cloud: 93%
Mid level cloud: 57%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
06:00

SSE
SSE

 4 / 8 mph 41 / 39°F 95% 997 mb
Low level cloud: 11%
Mid level cloud: 30%
High level cloud: 0%
Most Significant Cloud Type: low
21%
0.0 In
12:00

SSE
SSE

 21 / 44 mph 46 / 38°F 82% 1011 mb
Low level cloud: 99%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
18:00

NW
NW

 2 / 4 mph 52 / 53°F 89% 1003 mb
Low level cloud: 0%
Mid level cloud: 21%
High level cloud: 0%
Most Significant Cloud Type: medium
21%
0.1 In
Thu 05
Feb		00:00

S
S

 15 / 33 mph 48 / 42°F 95% 999 mb
Low level cloud: 100%
Mid level cloud: 98%
High level cloud: 94%
Most Significant Cloud Type: low
100%
0.3 In
06:00

NW
NW

 2 / 4 mph 39 / 38°F 93% 1008 mb
Low level cloud: 8%
Mid level cloud: 13%
High level cloud: 1%
Most Significant Cloud Type: low
12%
0.0 In
12:00

SSE
SSE

 12 / 25 mph 49 / 44°F 88% 1001 mb
Low level cloud: 29%
Mid level cloud: 45%
High level cloud: 13%
Most Significant Cloud Type: low
45%
0.1 In
18:00

ESE
ESE

 5 / 10 mph 43 / 40°F 89% 1011 mb
Low level cloud: 68%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: low
69%
0.0 In

Other Locations Near to Newcastle

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