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Fleetville 14 Day Long Range Forecast

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

Hertfordshire, United Kingdom

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

Reviewing the forecast for Fleetville Over the next 14 days and the average daytime maximum temperature will be around 15°C, with a high for the two weeks of 17°C expected on the afternoon of Thursday 23rd. The average minimum temperature will be 10°C, dipping to its lowest on the morning of Saturday 18th at 8°C. Expect the next 14 days have some days seeing a little precipitation and some days with rain. The current forecast indicates Thursday 23rd will have the most precipitation with an accumulation of around 9.0mm. On the whole winds are likely to be moderate.

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Tue 14
Oct		15:00

NNE
NNE

 11 / 14 mph 57 / 54°F 71% 1029 mb
Low level cloud: 100%
Mid level cloud: 2%
High level cloud: 13%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NNE
NNE

 8 / 12 mph 53 / 50°F 84% 1030 mb
Low level cloud: 11%
Mid level cloud: 3%
High level cloud: 32%
Most Significant Cloud Type: low
16%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

NNE
NNE

 7 / 13 mph 48 / 45°F 91% 1031 mb
Low level cloud: 46%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
45%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 15
Oct		00:00

NE
NE

 11 / 16 mph 53 / 49°F 73% 1031 mb
Low level cloud: 96%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
95%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

NE
NE

 9 / 13 mph 53 / 50°F 71% 1030 mb
Low level cloud: 79%
Mid level cloud: 0%
High level cloud: 5%
Most Significant Cloud Type: low
79%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

NNE
NNE

 8 / 12 mph 53 / 51°F 72% 1030 mb
Low level cloud: 77%
Mid level cloud: 0%
High level cloud: 1%
Most Significant Cloud Type: low
77%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

NNE
NNE

 11 / 13 mph 56 / 53°F 65% 1030 mb
Low level cloud: 39%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
38%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

NNE
NNE

 10 / 12 mph 59 / 57°F 58% 1030 mb
Low level cloud: 59%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
59%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NNE
NNE

 12 / 14 mph 58 / 55°F 62% 1029 mb
Low level cloud: 39%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: low
39%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NNE
NNE

 9 / 13 mph 53 / 49°F 75% 1029 mb
Low level cloud: 31%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
30%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

NE
NE

 9 / 14 mph 51 / 48°F 74% 1029 mb
Low level cloud: 75%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
74%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 16
Oct		00:00

NE
NE

 8 / 12 mph 51 / 49°F 71% 1028 mb
Low level cloud: 88%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
87%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

ENE
ENE

 6 / 10 mph 51 / 49°F 72% 1028 mb
Low level cloud: 80%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
79%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

ENE
ENE

 7 / 11 mph 53 / 51°F 66% 1027 mb
Low level cloud: 84%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
84%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

ENE
ENE

 8 / 9 mph 57 / 55°F 57% 1028 mb
Low level cloud: 66%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
66%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

ENE
ENE

 6 / 6 mph 61 / 60°F 52% 1027 mb
Low level cloud: 16%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
16%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

ENE
ENE

 5 / 6 mph 62 / 61°F 51% 1026 mb
Low level cloud: 5%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NE
NE

 6 / 9 mph 57 / 55°F 67% 1026 mb
Low level cloud: 10%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
10%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

ENE
ENE

 4 / 6 mph 53 / 53°F 79% 1027 mb
Low level cloud: 11%
Mid level cloud: 0%
High level cloud: 4%
Most Significant Cloud Type: low
11%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 17
Oct		00:00

NE
NE

 3 / 5 mph 51 / 50°F 85% 1027 mb
Low level cloud: 4%
Mid level cloud: 0%
High level cloud: 4%
Most Significant Cloud Type: low
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

NNE
NNE

 3 / 5 mph 48 / 48°F 87% 1026 mb
Low level cloud: 2%
Mid level cloud: 0%
High level cloud: 2%
Most Significant Cloud Type: low
1%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

N
N

 4 / 7 mph 47 / 46°F 89% 1026 mb
Low level cloud: 1%
Mid level cloud: 0%
High level cloud: 4%
Most Significant Cloud Type: high
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

NNE
NNE

 5 / 6 mph 53 / 51°F 74% 1027 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 3%
Most Significant Cloud Type: high
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

NE
NE

 6 / 6 mph 59 / 58°F 60% 1026 mb
Low level cloud: 17%
Mid level cloud: 0%
High level cloud: 2%
Most Significant Cloud Type: low
16%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

ENE
ENE

 7 / 8 mph 60 / 59°F 55% 1025 mb
Low level cloud: 26%
Mid level cloud: 0%
High level cloud: 1%
Most Significant Cloud Type: low
26%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

ENE
ENE

 6 / 11 mph 54 / 51°F 71% 1026 mb
Low level cloud: 34%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
33%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

E
E

 4 / 6 mph 52 / 51°F 78% 1027 mb
Low level cloud: 36%
Mid level cloud: 0%
High level cloud: 1%
Most Significant Cloud Type: low
36%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 18
Oct		00:00

E
E

 5 / 10 mph 50 / 48°F 76% 1027 mb
Low level cloud: 18%
Mid level cloud: 0%
High level cloud: 2%
Most Significant Cloud Type: low
18%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

E
E

 5 / 10 mph 48 / 46°F 75% 1027 mb
Low level cloud: 7%
Mid level cloud: 0%
High level cloud: 30%
Most Significant Cloud Type: low
10%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

ENE
ENE

 6 / 12 mph 46 / 44°F 80% 1027 mb
Low level cloud: 5%
Mid level cloud: 0%
High level cloud: 48%
Most Significant Cloud Type: medium
16%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

E
E

 6 / 7 mph 53 / 51°F 66% 1027 mb
Low level cloud: 1%
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
12:00

ESE
ESE

 7 / 8 mph 59 / 57°F 54% 1026 mb
Low level cloud: 25%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
25%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

ESE
ESE

 8 / 10 mph 59 / 58°F 54% 1024 mb
Low level cloud: 14%
Mid level cloud: 0%
High level cloud: 15%
Most Significant Cloud Type: low
16%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

ESE
ESE

 9 / 14 mph 53 / 50°F 68% 1024 mb
Low level cloud: 1%
Mid level cloud: 0%
High level cloud: 31%
Most Significant Cloud Type: high
30%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

ESE
ESE

 6 / 11 mph 50 / 47°F 75% 1024 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 33%
Most Significant Cloud Type: high
32%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 19
Oct		00:00

ESE
ESE

 6 / 12 mph 48 / 45°F 79% 1022 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: high
99%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SE
SE

 7 / 12 mph 47 / 44°F 78% 1021 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: high
99%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SE
SE

 6 / 11 mph 47 / 44°F 77% 1019 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: high
99%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SE
SE

 9 / 12 mph 51 / 47°F 71% 1018 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 99%
Most Significant Cloud Type: medium
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SSE
SSE

 11 / 13 mph 57 / 54°F 57% 1016 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 32%
Most Significant Cloud Type: medium
45%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

S
S

 11 / 14 mph 59 / 56°F 52% 1013 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 35%
Most Significant Cloud Type: medium
47%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SSE
SSE

 11 / 15 mph 55 / 52°F 66% 1012 mb
Low level cloud: 0%
Mid level cloud: 74%
High level cloud: 34%
Most Significant Cloud Type: medium
75%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SSE
SSE

 10 / 15 mph 54 / 51°F 65% 1009 mb
Low level cloud: 0%
Mid level cloud: 88%
High level cloud: 32%
Most Significant Cloud Type: medium
88%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 20
Oct		00:00

SSE
SSE

 11 / 18 mph 54 / 51°F 73% 1006 mb
Low level cloud: 35%
Mid level cloud: 74%
High level cloud: 100%
Most Significant Cloud Type: low
72%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

S
S

 15 / 23 mph 56 / 52°F 96% 1002 mb
Low level cloud: 100%
Mid level cloud: 77%
High level cloud: 76%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
06:00

S
S

 15 / 23 mph 56 / 53°F 97% 999 mb
Low level cloud: 100%
Mid level cloud: 43%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
09:00

SSW
SSW

 12 / 17 mph 58 / 55°F 94% 997 mb
Low level cloud: 95%
Mid level cloud: 17%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
12:00

WSW
WSW

 17 / 21 mph 62 / 61°F 65% 997 mb
Low level cloud: 24%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: low
25%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SW
SW

 15 / 18 mph 61 / 60°F 66% 996 mb
Low level cloud: 28%
Mid level cloud: 30%
High level cloud: 0%
Most Significant Cloud Type: low
39%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SW
SW

 15 / 21 mph 55 / 51°F 79% 996 mb
Low level cloud: 30%
Mid level cloud: 28%
High level cloud: 0%
Most Significant Cloud Type: low
39%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SW
SW

 16 / 24 mph 53 / 48°F 87% 996 mb
Low level cloud: 96%
Mid level cloud: 46%
High level cloud: 5%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Tue 21
Oct		00:00

SE
SE

 10 / 17 mph 54 / 51°F 95% 993 mb
Low level cloud: 54%
Mid level cloud: 31%
High level cloud: 30%
Most Significant Cloud Type: low
68%
0.0 In
06:00

NNE
NNE

 9 / 14 mph 52 / 48°F 95% 994 mb
Low level cloud: 78%
Mid level cloud: 92%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
12:00

S
S

 4 / 6 mph 60 / 60°F 73% 998 mb
Low level cloud: 79%
Mid level cloud: 23%
High level cloud: 0%
Most Significant Cloud Type: low
86%
0.0 In
18:00

WNW
WNW

 8 / 14 mph 58 / 56°F 75% 1000 mb
Low level cloud: 93%
Mid level cloud: 22%
High level cloud: 99%
Most Significant Cloud Type: low
100%
0.0 In
Wed 22
Oct		00:00

WSW
WSW

 17 / 22 mph 53 / 48°F 84% 998 mb
Low level cloud: 93%
Mid level cloud: 13%
High level cloud: 0%
Most Significant Cloud Type: low
96%
0.0 In
06:00

SSW
SSW

 4 / 5 mph 56 / 56°F 99% 994 mb
Low level cloud: 97%
Mid level cloud: 61%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
12:00

NW
NW

 14 / 20 mph 55 / 52°F 69% 1004 mb
Low level cloud: 19%
Mid level cloud: 21%
High level cloud: 98%
Most Significant Cloud Type: low
38%
0.0 In
18:00

SSW
SSW

 12 / 18 mph 60 / 60°F 90% 1002 mb
Low level cloud: 64%
Mid level cloud: 45%
High level cloud: 95%
Most Significant Cloud Type: low
91%
0.0 In
Thu 23
Oct		00:00

W
W

 9 / 13 mph 48 / 44°F 92% 1012 mb
Low level cloud: 20%
Mid level cloud: 27%
High level cloud: 6%
Most Significant Cloud Type: low
29%
0.0 In
06:00

SW
SW

 12 / 19 mph 57 / 55°F 92% 1000 mb
Low level cloud: 96%
Mid level cloud: 48%
High level cloud: 8%
Most Significant Cloud Type: low
100%
0.3 In
12:00

W
W

 12 / 17 mph 53 / 49°F 59% 1016 mb
Low level cloud: 27%
Mid level cloud: 40%
High level cloud: 32%
Most Significant Cloud Type: low
45%
0.0 In
18:00

SW
SW

 12 / 20 mph 62 / 62°F 93% 1003 mb
Low level cloud: 100%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
Fri 24
Oct		00:00

SW
SW

 15 / 22 mph 50 / 44°F 88% 1013 mb
Low level cloud: 59%
Mid level cloud: 98%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
06:00

SW
SW

 18 / 33 mph 58 / 54°F 93% 997 mb
Low level cloud: 96%
Mid level cloud: 46%
High level cloud: 9%
Most Significant Cloud Type: low
100%
0.2 In
12:00

SW
SW

 17 / 23 mph 57 / 53°F 77% 1010 mb
Low level cloud: 76%
Mid level cloud: 55%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
18:00

WSW
WSW

 14 / 27 mph 50 / 44°F 75% 1005 mb
Low level cloud: 10%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: low
12%
0.0 In
Sat 25
Oct		00:00

WSW
WSW

 21 / 31 mph 53 / 48°F 87% 1003 mb
Low level cloud: 98%
Mid level cloud: 45%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.2 In
06:00

WSW
WSW

 15 / 29 mph 47 / 41°F 87% 1007 mb
Low level cloud: 47%
Mid level cloud: 100%
High level cloud: 0%
Most Significant Cloud Type: low
81%
0.1 In
12:00

W
W

 14 / 21 mph 51 / 46°F 72% 1009 mb
Low level cloud: 45%
Mid level cloud: 29%
High level cloud: 0%
Most Significant Cloud Type: low
55%
0.0 In
18:00

WSW
WSW

 15 / 29 mph 49 / 43°F 75% 1013 mb
Low level cloud: 14%
Mid level cloud: 12%
High level cloud: 15%
Most Significant Cloud Type: low
19%
0.0 In
Sun 26
Oct		00:00

WSW
WSW

 8 / 12 mph 49 / 46°F 85% 1012 mb
Low level cloud: 2%
Mid level cloud: 9%
High level cloud: 38%
Most Significant Cloud Type: medium
17%
0.0 In
06:00

SW
SW

 11 / 21 mph 49 / 45°F 91% 1014 mb
Low level cloud: 90%
Mid level cloud: 64%
High level cloud: 1%
Most Significant Cloud Type: low
100%
0.0 In
12:00

SSW
SSW

 23 / 36 mph 54 / 48°F 80% 999 mb
Low level cloud: 100%
Mid level cloud: 85%
High level cloud: 11%
Most Significant Cloud Type: low
100%
0.0 In
18:00

SW
SW

 19 / 38 mph 57 / 52°F 84% 1012 mb
Low level cloud: 80%
Mid level cloud: 25%
High level cloud: 32%
Most Significant Cloud Type: low
92%
0.0 In
Mon 27
Oct		00:00

SW
SW

 15 / 25 mph 47 / 40°F 80% 985 mb
Low level cloud: 1%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: medium
10%
0.7 In
06:00

SSW
SSW

 25 / 50 mph 54 / 48°F 77% 1006 mb
Low level cloud: 99%
Mid level cloud: 0%
High level cloud: 10%
Most Significant Cloud Type: low
100%
0.0 In
12:00

SSW
SSW

 17 / 28 mph 50 / 44°F 77% 976 mb
Low level cloud: 29%
Mid level cloud: 15%
High level cloud: 8%
Most Significant Cloud Type: low
35%
0.2 In
18:00

SW
SW

 26 / 52 mph 59 / 54°F 89% 1000 mb
Low level cloud: 100%
Mid level cloud: 98%
High level cloud: 93%
Most Significant Cloud Type: low
100%
0.2 In
Tue 28
Oct		00:00

W
W

 18 / 33 mph 46 / 38°F 87% 978 mb
Low level cloud: 95%
Mid level cloud: 65%
High level cloud: 33%
Most Significant Cloud Type: low
100%
0.1 In
06:00

SW
SW

 20 / 41 mph 54 / 49°F 84% 996 mb
Low level cloud: 100%
Mid level cloud: 24%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.2 In
12:00

NNW
NNW

 22 / 42 mph 49 / 42°F 85% 987 mb
Low level cloud: 96%
Mid level cloud: 44%
High level cloud: 10%
Most Significant Cloud Type: low
100%
0.2 In
18:00

W
W

 14 / 28 mph 58 / 56°F 88% 1001 mb
Low level cloud: 53%
Mid level cloud: 45%
High level cloud: 0%
Most Significant Cloud Type: low
68%
0.1 In
Wed 29
Oct		00:00

NW
NW

 13 / 27 mph 45 / 39°F 83% 1002 mb
Low level cloud: 13%
Mid level cloud: 44%
High level cloud: 100%
Most Significant Cloud Type: medium
83%
0.0 In
06:00

WSW
WSW

 9 / 19 mph 48 / 44°F 90% 1015 mb
Low level cloud: 12%
Mid level cloud: 6%
High level cloud: 33%
Most Significant Cloud Type: low
17%
0.0 In
12:00

WNW
WNW

 13 / 26 mph 49 / 43°F 71% 1007 mb
Low level cloud: 32%
Mid level cloud: 81%
High level cloud: 99%
Most Significant Cloud Type: low
72%
0.0 In
18:00

SSW
SSW

 17 / 35 mph 52 / 47°F 87% 1013 mb
Low level cloud: 79%
Mid level cloud: 87%
High level cloud: 100%
Most Significant Cloud Type: low
100%
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