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Negril 14 Day Long Range Forecast

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

Jamaica

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

Taking a look at Negril over the coming two weeks and the average daytime maximum temperature will be around 32°C, with a high for the two weeks of 33°C expected on the afternoon of Sunday 12th. The mean minimum temperature will be 26°C, dipping to its lowest on the morning of Monday 6th at 23°C. Expect the next 14 days have most days seeing a little rain. The indicators are that Monday 6th will have the most precipitation with an accumulation of around 7.0mm. On the whole winds are likely to be light.

DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Sun 05
May
01:00

E
E

4 / 6 mph 78 / 82°F 83% 1011 mb
Low level cloud: 9%
Mid level cloud: 14%
High level cloud: 0%
Most Significant Cloud Type: low
13%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

NE
NE

5 / 10 mph 76 / 80°F 81% 1011 mb
Low level cloud: 2%
Mid level cloud: 18%
High level cloud: 0%
Most Significant Cloud Type: medium
23%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
07:00

E
E

4 / 7 mph 80 / 82°F 79% 1012 mb
Low level cloud: 0%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: medium
10%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

SE
SE

1 / 2 mph 89 / 96°F 65% 1013 mb
Low level cloud: 0%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: medium
10%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

NNW
NNW

2 / 3 mph 89 / 97°F 69% 1012 mb
Low level cloud: 19%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: low
22%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

SSE
SSE

3 / 4 mph 89 / 98°F 71% 1011 mb
Low level cloud: 19%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: low
23%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

SE
SE

6 / 8 mph 84 / 93°F 76% 1012 mb
Low level cloud: 18%
Mid level cloud: 19%
High level cloud: 0%
Most Significant Cloud Type: low
24%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

E
E

4 / 5 mph 81 / 87°F 80% 1013 mb
Low level cloud: 9%
Mid level cloud: 25%
High level cloud: 0%
Most Significant Cloud Type: low
17%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 06
May
16:00

S
S

3 / 4 mph 90 / 100°F 71% 1010 mb
Low level cloud: 26%
Mid level cloud: 18%
High level cloud: 0%
Most Significant Cloud Type: low
32%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

SE
SE

4 / 5 mph 85 / 96°F 78% 1011 mb
Low level cloud: 21%
Mid level cloud: 16%
High level cloud: 0%
Most Significant Cloud Type: low
27%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

ESE
ESE

4 / 6 mph 80 / 86°F 82% 1012 mb
Low level cloud: 3%
Mid level cloud: 17%
High level cloud: 0%
Most Significant Cloud Type: medium
26%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 07
May
01:00

E
E

3 / 6 mph 80 / 86°F 83% 1011 mb
Low level cloud: 8%
Mid level cloud: 24%
High level cloud: 0%
Most Significant Cloud Type: medium
45%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
04:00

NNE
NNE

2 / 3 mph 80 / 85°F 81% 1010 mb
Low level cloud: 0%
Mid level cloud: 20%
High level cloud: 0%
Most Significant Cloud Type: medium
19%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

S
S

0 / 0 mph 82 / 82°F 79% 1011 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
10:00

SW
SW

2 / 3 mph 86 / 87°F 65% 1012 mb
Low level cloud: 0%
Mid level cloud: 14%
High level cloud: 0%
Most Significant Cloud Type: medium
13%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

SW
SW

3 / 3 mph 89 / 96°F 68% 1011 mb
Low level cloud: 12%
Mid level cloud: 17%
High level cloud: 0%
Most Significant Cloud Type: low
17%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

NE
NE

3 / 4 mph 90 / 98°F 70% 1009 mb
Low level cloud: 19%
Mid level cloud: 14%
High level cloud: 0%
Most Significant Cloud Type: low
24%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

E
E

2 / 3 mph 86 / 98°F 76% 1010 mb
Low level cloud: 34%
Mid level cloud: 14%
High level cloud: 0%
Most Significant Cloud Type: low
38%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

E
E

3 / 3 mph 83 / 91°F 80% 1011 mb
Low level cloud: 28%
Mid level cloud: 15%
High level cloud: 0%
Most Significant Cloud Type: low
33%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 08
May
01:00

NE
NE

3 / 4 mph 81 / 89°F 83% 1011 mb
Low level cloud: 4%
Mid level cloud: 16%
High level cloud: 0%
Most Significant Cloud Type: medium
28%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
04:00

NE
NE

3 / 5 mph 79 / 85°F 85% 1010 mb
Low level cloud: 2%
Mid level cloud: 16%
High level cloud: 0%
Most Significant Cloud Type: medium
19%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

ENE
ENE

5 / 7 mph 81 / 83°F 83% 1012 mb
Low level cloud: 2%
Mid level cloud: 13%
High level cloud: 0%
Most Significant Cloud Type: medium
18%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

SSE
SSE

3 / 4 mph 86 / 89°F 69% 1012 mb
Low level cloud: 4%
Mid level cloud: 13%
High level cloud: 0%
Most Significant Cloud Type: medium
24%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

S
S

2 / 2 mph 89 / 97°F 69% 1011 mb
Low level cloud: 8%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: low
12%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

NE
NE

2 / 3 mph 90 / 99°F 70% 1010 mb
Low level cloud: 32%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: low
36%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

E
E

4 / 5 mph 86 / 100°F 80% 1011 mb
Low level cloud: 20%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: low
24%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SE
SE

6 / 8 mph 82 / 91°F 81% 1012 mb
Low level cloud: 39%
Mid level cloud: 15%
High level cloud: 0%
Most Significant Cloud Type: low
44%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 09
May
01:00

ESE
ESE

4 / 6 mph 81 / 89°F 84% 1012 mb
Low level cloud: 17%
Mid level cloud: 18%
High level cloud: 0%
Most Significant Cloud Type: low
22%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

ENE
ENE

4 / 6 mph 79 / 85°F 84% 1011 mb
Low level cloud: 4%
Mid level cloud: 16%
High level cloud: 0%
Most Significant Cloud Type: medium
27%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
07:00

ENE
ENE

3 / 5 mph 81 / 83°F 82% 1012 mb
Low level cloud: 6%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: low
9%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

ENE
ENE

1 / 2 mph 86 / 88°F 68% 1014 mb
Low level cloud: 0%
Mid level cloud: 10%
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

WNW
WNW

1 / 1 mph 89 / 96°F 68% 1013 mb
Low level cloud: 4%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: low
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

E
E

2 / 2 mph 90 / 98°F 71% 1011 mb
Low level cloud: 20%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: low
22%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

SE
SE

5 / 6 mph 86 / 99°F 78% 1012 mb
Low level cloud: 15%
Mid level cloud: 13%
High level cloud: 0%
Most Significant Cloud Type: low
19%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SE
SE

7 / 9 mph 82 / 91°F 83% 1013 mb
Low level cloud: 43%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: low
46%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 10
May
01:00

SE
SE

9 / 13 mph 81 / 89°F 86% 1012 mb
Low level cloud: 4%
Mid level cloud: 16%
High level cloud: 0%
Most Significant Cloud Type: medium
26%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
04:00

ESE
ESE

6 / 9 mph 80 / 87°F 86% 1011 mb
Low level cloud: 6%
Mid level cloud: 13%
High level cloud: 0%
Most Significant Cloud Type: low
10%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
07:00

ESE
ESE

6 / 10 mph 82 / 84°F 84% 1012 mb
Low level cloud: 1%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: medium
9%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

SE
SE

5 / 7 mph 86 / 89°F 68% 1013 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
13:00

SSE
SSE

9 / 11 mph 89 / 98°F 70% 1012 mb
Low level cloud: 8%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: low
9%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

SE
SE

7 / 8 mph 90 / 101°F 74% 1011 mb
Low level cloud: 21%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: low
23%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

ESE
ESE

6 / 8 mph 86 / 100°F 81% 1012 mb
Low level cloud: 23%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
25%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

ESE
ESE

5 / 6 mph 83 / 93°F 85% 1013 mb
Low level cloud: 37%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: low
38%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 11
May
01:00

E
E

3 / 4 mph 82 / 91°F 86% 1012 mb
Low level cloud: 5%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: low
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

ESE
ESE

5 / 7 mph 80 / 87°F 85% 1011 mb
Low level cloud: 1%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
9%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

SE
SE

4 / 6 mph 81 / 83°F 79% 1013 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

SSE
SSE

3 / 4 mph 86 / 88°F 66% 1013 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

SSW
SSW

3 / 4 mph 89 / 96°F 68% 1012 mb
Low level cloud: 10%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
12%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

ESE
ESE

4 / 4 mph 90 / 101°F 77% 1011 mb
Low level cloud: 47%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: low
50%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

ESE
ESE

6 / 8 mph 86 / 100°F 83% 1012 mb
Low level cloud: 25%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: low
27%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

ESE
ESE

6 / 8 mph 83 / 92°F 85% 1012 mb
Low level cloud: 29%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: low
32%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Sun 12
May
01:00

ESE
ESE

6 / 12 mph 84 / 97°F 85% 1012 mb
Low level cloud: 15%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: low
19%
0.0 In
07:00

NE
NE

4 / 9 mph 83 / 91°F 81% 1013 mb
Low level cloud: 6%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
7%
0.0 In
13:00

SSE
SSE

6 / 13 mph 89 / 101°F 68% 1012 mb
Low level cloud: 5%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
7%
0.0 In
19:00

NE
NE

5 / 11 mph 90 / 109°F 78% 1011 mb
Low level cloud: 13%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: low
16%
0.0 In
Mon 13
May
01:00

SE
SE

5 / 11 mph 86 / 100°F 84% 1012 mb
Low level cloud: 21%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: low
24%
0.0 In
07:00

ESE
ESE

5 / 11 mph 82 / 89°F 78% 1014 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 6%
Most Significant Cloud Type: medium
1%
0.0 In
13:00

SE
SE

19 / 40 mph 88 / 97°F 65% 1012 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
19:00

ESE
ESE

5 / 11 mph 90 / 108°F 77% 1013 mb
Low level cloud: 4%
Mid level cloud: 0%
High level cloud: 9%
Most Significant Cloud Type: low
4%
0.0 In
Tue 14
May
01:00

ESE
ESE

11 / 23 mph 82 / 89°F 80% 1012 mb
Low level cloud: 7%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
6%
0.0 In
07:00

SE
SE

3 / 7 mph 83 / 91°F 77% 1014 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: medium
1%
0.0 In
13:00

SE
SE

16 / 34 mph 89 / 100°F 68% 1012 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
1%
0.0 In
19:00

SE
SE

10 / 21 mph 85 / 99°F 83% 1012 mb
Low level cloud: 11%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: low
14%
0.1 In
Wed 15
May
01:00

ESE
ESE

12 / 26 mph 78 / 82°F 81% 1012 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
07:00

ESE
ESE

5 / 10 mph 82 / 90°F 81% 1012 mb
Low level cloud: 8%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
7%
0.0 In
13:00

SSE
SSE

16 / 34 mph 89 / 102°F 67% 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

SE
SE

9 / 19 mph 85 / 98°F 81% 1011 mb
Low level cloud: 10%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: low
11%
0.0 In
Thu 16
May
01:00

SE
SE

14 / 29 mph 82 / 88°F 77% 1012 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
07:00

ESE
ESE

8 / 16 mph 80 / 85°F 76% 1012 mb
Low level cloud: 19%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
18%
0.0 In
13:00

SSE
SSE

15 / 31 mph 87 / 95°F 63% 1012 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
19:00

E
E

6 / 13 mph 87 / 100°F 78% 1012 mb
Low level cloud: 28%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
28%
0.0 In
Fri 17
May
01:00

ESE
ESE

5 / 10 mph 85 / 99°F 84% 1013 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
07:00

E
E

5 / 10 mph 82 / 88°F 75% 1013 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
13:00

SSE
SSE

5 / 11 mph 89 / 101°F 70% 1014 mb
Low level cloud: 28%
Mid level cloud: 13%
High level cloud: 0%
Most Significant Cloud Type: low
32%
0.0 In
19:00

ESE
ESE

2 / 4 mph 89 / 110°F 80% 1013 mb
Low level cloud: 23%
Mid level cloud: 17%
High level cloud: 0%
Most Significant Cloud Type: low
29%
0.0 In
Sat 18
May
01:00

NNE
NNE

3 / 6 mph 88 / 107°F 84% 1013 mb
Low level cloud: 21%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: low
22%
0.0 In
07:00

NE
NE

3 / 7 mph 84 / 96°F 83% 1014 mb
Low level cloud: 7%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: low
10%
0.0 In
13:00

SSE
SSE

3 / 6 mph 92 / 109°F 67% 1013 mb
Low level cloud: 12%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: low
15%
0.0 In
19:00

ENE
ENE

5 / 10 mph 86 / 98°F 77% 1013 mb
Low level cloud: 2%
Mid level cloud: 10%
High level cloud: 32%
Most Significant Cloud Type: medium
16%
0.0 In
Sun 19
May
01:00

SE
SE

2 / 3 mph 86 / 101°F 83% 1012 mb
Low level cloud: 30%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
30%
0.0 In
07:00

ENE
ENE

3 / 7 mph 84 / 92°F 72% 1012 mb
Low level cloud: 1%
Mid level cloud: 19%
High level cloud: 0%
Most Significant Cloud Type: medium
21%
0.0 In
13:00

SSW
SSW

3 / 7 mph 91 / 108°F 67% 1011 mb
Low level cloud: 1%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: medium
10%
0.0 In
19:00

NNE
NNE

3 / 7 mph 93 / 120°F 78% 1011 mb
Low level cloud: 21%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: low
22%
0.0 In
Mon 20
May
01:00

NE
NE

4 / 8 mph 82 / 90°F 86% 1011 mb
Low level cloud: 0%
Mid level cloud: 14%
High level cloud: 0%
Most Significant Cloud Type: medium
13%
0.1 In
07:00

E
E

5 / 10 mph 81 / 88°F 80% 1012 mb
Low level cloud: 2%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: low
3%
0.1 In
13:00

SE
SE

7 / 14 mph 88 / 101°F 73% 1012 mb
Low level cloud: 8%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: low
10%
0.0 In
19:00

ENE
ENE

4 / 8 mph 91 / 111°F 76% 1012 mb
Low level cloud: 10%
Mid level cloud: 13%
High level cloud: 0%
Most Significant Cloud Type: low
14%
0.0 In

Other Locations Near to Negril

Cities and Towns: Montego Bay, Jamaica

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