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Vanwyksvlei 14 Day Long Range Forecast

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

South Africa

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

The next 14 day outlook for Vanwyksvlei shows the average daytime maximum temperature will be around 16°C, with a high for the two weeks of 24°C expected on the afternoon of Thursday 5th. The mean minimum temperature will be 7°C, dipping to its lowest on the morning of Monday 9th at 3°C. The coming 14 days will have mostly dry days although Sunday is likely to see a little rain. The indicators are that Sunday 8th will have the most precipitation with an accumulation of around 3.0mm. On the whole winds are likely to be moderate.

DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Mon 02
Jun
17:00

NW
NW

15 / 21 mph 72 / 72°F 20% 1016 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
20:00

NW
NW

11 / 22 mph 63 / 63°F 26% 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
23:00

WSW
WSW

9 / 19 mph 57 / 55°F 37% 1019 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 03
Jun
02:00

W
W

7 / 16 mph 52 / 50°F 47% 1019 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
05:00

W
W

8 / 16 mph 49 / 45°F 53% 1019 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
08:00

W
W

6 / 13 mph 47 / 44°F 53% 1021 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
11:00

W
W

7 / 8 mph 59 / 57°F 26% 1021 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
14:00

WNW
WNW

10 / 11 mph 66 / 65°F 15% 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
17:00

W
W

9 / 13 mph 65 / 64°F 16% 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
20:00

WSW
WSW

8 / 17 mph 55 / 53°F 25% 1020 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
23:00

SSW
SSW

5 / 11 mph 51 / 50°F 29% 1021 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 04
Jun
02:00

SSE
SSE

7 / 14 mph 49 / 47°F 27% 1021 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
05:00

ESE
ESE

10 / 20 mph 46 / 42°F 32% 1022 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
08:00

ESE
ESE

10 / 21 mph 46 / 40°F 54% 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
11:00

ESE
ESE

17 / 20 mph 59 / 56°F 39% 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
14:00

E
E

17 / 20 mph 66 / 66°F 22% 1020 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
17:00

E
E

15 / 20 mph 65 / 65°F 19% 1019 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
20:00

ESE
ESE

11 / 24 mph 55 / 52°F 25% 1021 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 5%
Most Significant Cloud Type: high
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
23:00

E
E

15 / 28 mph 52 / 47°F 36% 1022 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
Thu 05
Jun
02:00

E
E

13 / 25 mph 49 / 44°F 40% 1021 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
05:00

ESE
ESE

10 / 21 mph 47 / 42°F 41% 1021 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
08:00

E
E

8 / 17 mph 50 / 46°F 36% 1021 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: medium
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
11:00

NNE
NNE

11 / 13 mph 68 / 67°F 23% 1019 mb
Low level cloud: 0%
Mid level cloud: 14%
High level cloud: 0%
Most Significant Cloud Type: medium
14%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
14:00

NNW
NNW

22 / 26 mph 76 / 74°F 18% 1015 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
17:00

NW
NW

17 / 27 mph 74 / 73°F 21% 1014 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
20:00

W
W

11 / 23 mph 65 / 65°F 29% 1016 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
23:00

SW
SW

9 / 20 mph 58 / 56°F 33% 1018 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
Fri 06
Jun
02:00

WNW
WNW

7 / 14 mph 54 / 53°F 34% 1019 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
05:00

WSW
WSW

8 / 16 mph 51 / 48°F 40% 1020 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
08:00

W
W

2 / 5 mph 49 / 49°F 46% 1021 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
11:00

NNW
NNW

6 / 7 mph 62 / 61°F 29% 1021 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
14:00

NW
NW

12 / 13 mph 69 / 68°F 22% 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
17:00

WNW
WNW

11 / 15 mph 67 / 67°F 20% 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
20:00

WNW
WNW

8 / 17 mph 58 / 56°F 23% 1018 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
23:00

WNW
WNW

8 / 16 mph 54 / 52°F 26% 1018 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 07
Jun
02:00

WNW
WNW

6 / 13 mph 51 / 48°F 24% 1018 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
05:00

W
W

6 / 13 mph 47 / 44°F 34% 1018 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 19%
Most Significant Cloud Type: high
19%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
08:00

W
W

5 / 11 mph 46 / 43°F 48% 1020 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 2%
Most Significant Cloud Type: high
1%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
11:00

WNW
WNW

9 / 11 mph 58 / 56°F 29% 1018 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 7%
Most Significant Cloud Type: high
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
14:00

WNW
WNW

15 / 18 mph 65 / 64°F 18% 1015 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 32%
Most Significant Cloud Type: medium
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
17:00

WNW
WNW

14 / 19 mph 64 / 63°F 18% 1015 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
20:00

W
W

10 / 19 mph 55 / 53°F 31% 1016 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
23:00

W
W

8 / 13 mph 52 / 49°F 51% 1016 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 100%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 08
Jun
02:00

W
W

8 / 13 mph 49 / 46°F 71% 1015 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 100%
Most Significant Cloud Type: medium
11%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
05:00

WNW
WNW

9 / 14 mph 48 / 44°F 76% 1016 mb
Low level cloud: 28%
Mid level cloud: 41%
High level cloud: 100%
Most Significant Cloud Type: low
53%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
08:00

W
W

10 / 13 mph 48 / 44°F 81% 1017 mb
Low level cloud: 31%
Mid level cloud: 51%
High level cloud: 0%
Most Significant Cloud Type: low
48%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
11:00

WNW
WNW

14 / 16 mph 53 / 48°F 55% 1016 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 0%
Most Significant Cloud Type: medium
45%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
14:00

WSW
WSW

15 / 18 mph 48 / 41°F 75% 1016 mb
Low level cloud: 56%
Mid level cloud: 53%
High level cloud: 0%
Most Significant Cloud Type: low
74%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
17:00

W
W

11 / 13 mph 45 / 40°F 76% 1018 mb
Low level cloud: 63%
Mid level cloud: 47%
High level cloud: 0%
Most Significant Cloud Type: low
80%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
20:00

W
W

12 / 16 mph 46 / 41°F 62% 1019 mb
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 0%
Most Significant Cloud Type: medium
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
23:00

WSW
WSW

11 / 15 mph 44 / 38°F 66% 1020 mb
Low level cloud: 0%
Mid level cloud: 96%
High level cloud: 0%
Most Significant Cloud Type: medium
95%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Mon 09
Jun
02:00

SSW
SSW

5 / 6 mph 52 / 51°F 72% 1020 mb
Low level cloud: 0%
Mid level cloud: 43%
High level cloud: 32%
Most Significant Cloud Type: medium
44%
0.0 In
08:00

ESE
ESE

6 / 9 mph 47 / 45°F 79% 1020 mb
Low level cloud: 2%
Mid level cloud: 32%
High level cloud: 0%
Most Significant Cloud Type: medium
37%
0.0 In
14:00

WNW
WNW

11 / 13 mph 64 / 64°F 27% 1017 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 79%
Most Significant Cloud Type: medium
7%
0.0 In
20:00

W
W

10 / 12 mph 56 / 53°F 44% 1021 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 22%
Most Significant Cloud Type: medium
7%
0.0 In
Tue 10
Jun
02:00

NNW
NNW

5 / 10 mph 47 / 44°F 72% 1021 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: medium
6%
0.0 In
08:00

W
W

2 / 4 mph 45 / 45°F 46% 1021 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 1%
Most Significant Cloud Type: medium
45%
0.0 In
14:00

SW
SW

7 / 9 mph 59 / 57°F 40% 1024 mb
Low level cloud: 0%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: medium
11%
0.0 In
20:00

ESE
ESE

4 / 5 mph 52 / 51°F 40% 1031 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
0.0 In
Wed 11
Jun
02:00

SE
SE

8 / 16 mph 45 / 41°F 67% 1030 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
5%
0.0 In
08:00

ESE
ESE

9 / 17 mph 39 / 32°F 73% 1035 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 15%
Most Significant Cloud Type: high
14%
0.0 In
14:00

E
E

13 / 15 mph 61 / 61°F 25% 1029 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
20:00

E
E

8 / 17 mph 49 / 46°F 36% 1031 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
Thu 12
Jun
02:00

ESE
ESE

10 / 22 mph 46 / 41°F 41% 1032 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
08:00

E
E

9 / 20 mph 41 / 35°F 45% 1033 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
14:00

ENE
ENE

14 / 16 mph 67 / 67°F 13% 1028 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
20:00

NE
NE

6 / 12 mph 53 / 52°F 17% 1028 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
Fri 13
Jun
02:00

E
E

9 / 19 mph 49 / 45°F 31% 1030 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
08:00

NNE
NNE

7 / 15 mph 47 / 44°F 45% 1029 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 1%
Most Significant Cloud Type: high
0%
0.0 In
14:00

N
N

7 / 9 mph 71 / 71°F 15% 1027 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
20:00

NW
NW

4 / 8 mph 57 / 57°F 40% 1025 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
Sat 14
Jun
02:00

E
E

7 / 15 mph 53 / 51°F 29% 1028 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
08:00

NE
NE

2 / 5 mph 49 / 49°F 55% 1027 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 3%
Most Significant Cloud Type: high
3%
0.0 In
14:00

NNW
NNW

14 / 16 mph 73 / 73°F 21% 1025 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
20:00

WNW
WNW

2 / 4 mph 57 / 59°F 40% 1025 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 1%
Most Significant Cloud Type: high
1%
0.0 In
Sun 15
Jun
02:00

NNE
NNE

8 / 16 mph 54 / 51°F 39% 1026 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
08:00

NE
NE

5 / 10 mph 50 / 49°F 45% 1027 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 17%
Most Significant Cloud Type: high
17%
0.0 In
14:00

NNW
NNW

18 / 21 mph 71 / 71°F 26% 1022 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
0.0 In
20:00

NNW
NNW

5 / 11 mph 59 / 59°F 26% 1025 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
Mon 16
Jun
02:00

NNW
NNW

8 / 16 mph 56 / 54°F 48% 1023 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 33%
Most Significant Cloud Type: medium
4%
0.0 In
08:00

N
N

6 / 14 mph 50 / 47°F 33% 1026 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
14:00

NW
NW

15 / 17 mph 71 / 71°F 28% 1019 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
0.0 In
20:00

NNW
NNW

9 / 18 mph 59 / 59°F 25% 1023 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
Tue 17
Jun
02:00

WNW
WNW

7 / 15 mph 55 / 53°F 43% 1019 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 100%
Most Significant Cloud Type: high
99%
0.0 In
08:00

NNE
NNE

5 / 10 mph 50 / 49°F 43% 1024 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
14:00

NW
NW

7 / 8 mph 68 / 68°F 35% 1017 mb
Low level cloud: 0%
Mid level cloud: 19%
High level cloud: 1%
Most Significant Cloud Type: medium
18%
0.0 In
20:00

N
N

9 / 19 mph 61 / 61°F 33% 1019 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
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