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Duku 14 Day Long Range Forecast

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

Nigeria

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

Reviewing the forecast for Duku Over the next 14 days and the average daytime maximum temperature will be around 38°C, with a high for the two weeks of 41°C expected on the afternoon of Monday 12th. The mean minimum temperature will be 27°C, dipping to its lowest on the morning of Sunday 18th at 23°C. The next 14 days will have mixed weather with some days dry and some seeing a little rain. The current forecast indicates Saturday 17th will have the most precipitation with an accumulation of around 4.0mm. On the whole winds are likely to be moderate.

DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Fri 09
May
16:00

ENE
ENE

16 / 20 mph 103 / 101°F 8% 1004 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
19:00

NNE
NNE

4 / 4 mph 100 / 99°F 11% 1006 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
22:00

NE
NE

3 / 6 mph 94 / 90°F 12% 1008 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
Sat 10
May
01:00

S
S

9 / 15 mph 85 / 83°F 28% 1009 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
04:00

S
S

9 / 14 mph 79 / 83°F 69% 1009 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
07:00

SSW
SSW

7 / 12 mph 80 / 80°F 69% 1011 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
10:00

SSW
SSW

8 / 9 mph 94 / 92°F 28% 1011 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
13:00

NNE
NNE

6 / 7 mph 104 / 101°F 8% 1008 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
16:00

NE
NE

11 / 13 mph 105 / 103°F 5% 1006 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
19:00

E
E

8 / 13 mph 98 / 96°F 9% 1007 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
22:00

SSW
SSW

3 / 4 mph 95 / 92°F 11% 1009 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
Sun 11
May
01:00

SSW
SSW

5 / 9 mph 88 / 84°F 16% 1009 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
04:00

SSW
SSW

8 / 13 mph 84 / 84°F 43% 1009 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
07:00

SSW
SSW

8 / 12 mph 84 / 83°F 50% 1011 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
10:00

SW
SW

7 / 9 mph 95 / 90°F 22% 1012 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
13:00

SW
SW

2 / 2 mph 104 / 101°F 12% 1009 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
16:00

NNE
NNE

5 / 7 mph 105 / 104°F 10% 1006 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 15%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

E
E

7 / 12 mph 98 / 96°F 19% 1007 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 33%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

S
S

4 / 7 mph 94 / 92°F 24% 1009 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 12
May
01:00

S
S

6 / 9 mph 90 / 89°F 32% 1009 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
04:00

SSW
SSW

9 / 15 mph 83 / 83°F 44% 1009 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 9%
Most Significant Cloud Type: high
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

SSW
SSW

8 / 13 mph 82 / 82°F 51% 1011 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
10:00

WSW
WSW

8 / 9 mph 95 / 94°F 32% 1011 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 32%
Most Significant Cloud Type: high
31%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

N
N

6 / 7 mph 105 / 103°F 14% 1007 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 22%
Most Significant Cloud Type: high
22%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

NE
NE

9 / 11 mph 106 / 107°F 8% 1004 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
19:00

ESE
ESE

9 / 14 mph 100 / 98°F 15% 1005 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 1%
Most Significant Cloud Type: high
1%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

ESE
ESE

2 / 4 mph 98 / 95°F 20% 1007 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
Tue 13
May
01:00

SSW
SSW

7 / 10 mph 91 / 89°F 26% 1007 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
04:00

SSW
SSW

14 / 25 mph 83 / 84°F 50% 1006 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
07:00

S
S

11 / 18 mph 82 / 82°F 60% 1008 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
10:00

SW
SW

10 / 11 mph 94 / 95°F 35% 1009 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
13:00

SSW
SSW

5 / 6 mph 104 / 102°F 17% 1006 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
16:00

NW
NW

3 / 4 mph 105 / 106°F 13% 1002 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
19:00

SE
SE

9 / 14 mph 100 / 98°F 19% 1003 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
22:00

SSW
SSW

13 / 24 mph 91 / 91°F 32% 1006 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
Wed 14
May
01:00

SSW
SSW

19 / 32 mph 84 / 87°F 51% 1006 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
04:00

SSW
SSW

16 / 26 mph 80 / 83°F 64% 1006 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
07:00

SSW
SSW

15 / 23 mph 80 / 82°F 65% 1009 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
10:00

SSW
SSW

13 / 15 mph 91 / 93°F 42% 1009 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
13:00

SSW
SSW

9 / 10 mph 100 / 101°F 27% 1007 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
16:00

SSE
SSE

5 / 6 mph 104 / 101°F 19% 1003 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
19:00

S
S

9 / 14 mph 97 / 97°F 27% 1004 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SSW
SSW

18 / 30 mph 88 / 90°F 42% 1007 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
Thu 15
May
01:00

S
S

19 / 31 mph 84 / 86°F 49% 1007 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
04:00

S
S

19 / 30 mph 76 / 79°F 74% 1008 mb
Low level cloud: 1%
Mid level cloud: 4%
High level cloud: 8%
Most Significant Cloud Type: medium
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

SSW
SSW

14 / 21 mph 78 / 80°F 72% 1009 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 7%
Most Significant Cloud Type: medium
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

SSW
SSW

13 / 15 mph 91 / 92°F 41% 1010 mb
Low level cloud: 0%
Mid level cloud: 21%
High level cloud: 54%
Most Significant Cloud Type: medium
23%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

SSW
SSW

9 / 11 mph 101 / 100°F 24% 1007 mb
Low level cloud: 0%
Mid level cloud: 41%
High level cloud: 33%
Most Significant Cloud Type: medium
42%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

S
S

13 / 18 mph 100 / 100°F 24% 1004 mb
Low level cloud: 0%
Mid level cloud: 17%
High level cloud: 20%
Most Significant Cloud Type: medium
17%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

S
S

11 / 17 mph 93 / 94°F 34% 1006 mb
Low level cloud: 0%
Mid level cloud: 13%
High level cloud: 18%
Most Significant Cloud Type: medium
13%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

ESE
ESE

7 / 11 mph 83 / 85°F 55% 1010 mb
Low level cloud: 0%
Mid level cloud: 34%
High level cloud: 31%
Most Significant Cloud Type: medium
35%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Fri 16
May
01:00

SSE
SSE

19 / 31 mph 78 / 80°F 57% 1009 mb
Low level cloud: 0%
Mid level cloud: 43%
High level cloud: 5%
Most Significant Cloud Type: medium
43%
0.0 In
07:00

S
S

16 / 25 mph 79 / 82°F 59% 1009 mb
Low level cloud: 0%
Mid level cloud: 12%
High level cloud: 88%
Most Significant Cloud Type: medium
15%
0.0 In
13:00

S
S

19 / 25 mph 98 / 100°F 29% 1008 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 10%
Most Significant Cloud Type: medium
45%
0.0 In
19:00

NW
NW

9 / 15 mph 88 / 86°F 32% 1007 mb
Low level cloud: 0%
Mid level cloud: 27%
High level cloud: 11%
Most Significant Cloud Type: medium
27%
0.0 In
Sat 17
May
01:00

SSW
SSW

14 / 27 mph 79 / 81°F 64% 1010 mb
Low level cloud: 0%
Mid level cloud: 20%
High level cloud: 10%
Most Significant Cloud Type: medium
20%
0.0 In
07:00

SW
SW

6 / 9 mph 80 / 82°F 59% 1010 mb
Low level cloud: 0%
Mid level cloud: 25%
High level cloud: 32%
Most Significant Cloud Type: medium
26%
0.0 In
13:00

S
S

16 / 25 mph 93 / 93°F 33% 1009 mb
Low level cloud: 0%
Mid level cloud: 30%
High level cloud: 4%
Most Significant Cloud Type: medium
29%
0.0 In
19:00

ESE
ESE

17 / 36 mph 87 / 88°F 41% 1007 mb
Low level cloud: 0%
Mid level cloud: 30%
High level cloud: 6%
Most Significant Cloud Type: medium
30%
0.0 In
Sun 18
May
01:00

SSW
SSW

7 / 13 mph 82 / 83°F 51% 1008 mb
Low level cloud: 0%
Mid level cloud: 27%
High level cloud: 5%
Most Significant Cloud Type: medium
27%
0.0 In
07:00

SW
SW

9 / 19 mph 76 / 79°F 69% 1009 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 6%
Most Significant Cloud Type: medium
3%
0.1 In
13:00

NW
NW

5 / 8 mph 99 / 100°F 25% 1007 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 0%
Most Significant Cloud Type: medium
45%
0.0 In
19:00

WSW
WSW

4 / 8 mph 100 / 105°F 31% 1004 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 4%
Most Significant Cloud Type: medium
7%
0.0 In
Mon 19
May
01:00

SSW
SSW

23 / 36 mph 80 / 82°F 64% 1007 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
07:00

SSW
SSW

16 / 34 mph 77 / 80°F 68% 1009 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
5%
0.0 In
13:00

WSW
WSW

9 / 14 mph 94 / 96°F 36% 1007 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 42%
Most Significant Cloud Type: medium
5%
0.0 In
19:00

S
S

19 / 40 mph 91 / 93°F 38% 1005 mb
Low level cloud: 0%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: medium
11%
0.0 In
Tue 20
May
01:00

SSW
SSW

17 / 28 mph 80 / 83°F 63% 1008 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 6%
Most Significant Cloud Type: medium
2%
0.0 In
07:00

S
S

15 / 32 mph 78 / 81°F 63% 1009 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
0.0 In
13:00

SSW
SSW

13 / 20 mph 95 / 96°F 30% 1008 mb
Low level cloud: 0%
Mid level cloud: 30%
High level cloud: 6%
Most Significant Cloud Type: medium
30%
0.0 In
19:00

SSE
SSE

6 / 14 mph 91 / 92°F 36% 1006 mb
Low level cloud: 0%
Mid level cloud: 18%
High level cloud: 6%
Most Significant Cloud Type: medium
17%
0.0 In
Wed 21
May
01:00

SSW
SSW

8 / 13 mph 82 / 84°F 55% 1008 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
0.0 In
07:00

SSW
SSW

14 / 30 mph 77 / 79°F 59% 1009 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 7%
Most Significant Cloud Type: medium
45%
0.0 In
13:00

S
S

10 / 15 mph 100 / 102°F 28% 1007 mb
Low level cloud: 0%
Mid level cloud: 24%
High level cloud: 4%
Most Significant Cloud Type: medium
24%
0.0 In
19:00

S
S

8 / 16 mph 92 / 93°F 36% 1007 mb
Low level cloud: 0%
Mid level cloud: 21%
High level cloud: 10%
Most Significant Cloud Type: medium
21%
0.0 In
Thu 22
May
01:00

S
S

13 / 25 mph 80 / 81°F 57% 1007 mb
Low level cloud: 0%
Mid level cloud: 20%
High level cloud: 53%
Most Significant Cloud Type: medium
22%
0.3 In
07:00

SSW
SSW

13 / 26 mph 80 / 83°F 65% 1009 mb
Low level cloud: 0%
Mid level cloud: 15%
High level cloud: 8%
Most Significant Cloud Type: medium
15%
0.0 In
13:00

SW
SW

7 / 13 mph 96 / 96°F 28% 1008 mb
Low level cloud: 0%
Mid level cloud: 27%
High level cloud: 9%
Most Significant Cloud Type: medium
27%
0.0 In
19:00

NNE
NNE

4 / 8 mph 104 / 108°F 26% 1004 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 10%
Most Significant Cloud Type: medium
6%
0.0 In
Fri 23
May
01:00

SSW
SSW

14 / 27 mph 83 / 85°F 55% 1008 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
6%
0.0 In
07:00

SSW
SSW

20 / 43 mph 80 / 82°F 62% 1009 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: medium
7%
0.0 In
13:00

SSW
SSW

11 / 20 mph 95 / 98°F 35% 1009 mb
Low level cloud: 0%
Mid level cloud: 16%
High level cloud: 0%
Most Significant Cloud Type: medium
16%
0.0 In
19:00

S
S

10 / 21 mph 89 / 92°F 43% 1006 mb
Low level cloud: 0%
Mid level cloud: 20%
High level cloud: 14%
Most Significant Cloud Type: medium
20%
0.0 In
Sat 24
May
01:00

WSW
WSW

9 / 18 mph 81 / 83°F 61% 1009 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 100%
Most Significant Cloud Type: medium
9%
0.0 In
07:00

S
S

16 / 33 mph 78 / 81°F 67% 1009 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 2%
Most Significant Cloud Type: medium
5%
0.0 In
13:00

S
S

10 / 19 mph 98 / 100°F 29% 1008 mb
Low level cloud: 0%
Mid level cloud: 15%
High level cloud: 6%
Most Significant Cloud Type: medium
15%
0.0 In
19:00

SE
SE

11 / 22 mph 95 / 97°F 33% 1005 mb
Low level cloud: 0%
Mid level cloud: 16%
High level cloud: 0%
Most Significant Cloud Type: medium
15%
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