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Semmering Pass 14 Day Long Range Forecast

14 Day weather providing an extended long range forecast outlook for Semmering Pass

Austria

Long range weather outlook for Semmering Pass includes 14 day forecast summary:

Taking a look at Semmering Pass over the coming two weeks and the average daytime maximum temperature will be around 4°C, with a high for the two weeks of 10°C expected on the afternoon of Wednesday 12th. The mean minimum temperature will be 1°C, dipping to its lowest on the morning of Thursday 20th at -3°C. Expect the coming 14 days to have some days seeing a little precipitation and some days with rain, sleet or snow. The indicators are that Thursday 13th will have the most precipitation with an accumulation of around 12.0mm. On the whole winds are likely to be light.

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Wed 12
Mar		16:00

SSW
SSW

 9 / 11 mph 50 / 46°F 64% 996 mb
Low level cloud: 0%
Mid level cloud: 36%
High level cloud: 100%
Most Significant Cloud Type: medium
40%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

SSW
SSW

 5 / 9 mph 43 / 40°F 88% 998 mb
Low level cloud: 7%
Mid level cloud: 23%
High level cloud: 100%
Most Significant Cloud Type: medium
46%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

S
S

 5 / 9 mph 42 / 39°F 89% 997 mb
Low level cloud: 14%
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
Thu 13
Mar		01:00

SSE
SSE

 3 / 6 mph 40 / 38°F 95% 994 mb
Low level cloud: 67%
Mid level cloud: 70%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
04:00

SE
SE

 3 / 6 mph 38 / 36°F 98% 991 mb
Low level cloud: 90%
Mid level cloud: 83%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
07:00

SSE
SSE

 4 / 8 mph 38 / 35°F 98% 988 mb
Low level cloud: 94%
Mid level cloud: 92%
High level cloud: 35%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
10:00

W
W

 4 / 6 mph 41 / 39°F 95% 989 mb
Low level cloud: 88%
Mid level cloud: 88%
High level cloud: 7%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
13:00

W
W

 4 / 5 mph 45 / 42°F 82% 993 mb
Low level cloud: 17%
Mid level cloud: 46%
High level cloud: 18%
Most Significant Cloud Type: low
35%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

WNW
WNW

 4 / 5 mph 45 / 43°F 74% 996 mb
Low level cloud: 4%
Mid level cloud: 46%
High level cloud: 1%
Most Significant Cloud Type: medium
57%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

NW
NW

 2 / 2 mph 44 / 44°F 89% 1000 mb
Low level cloud: 5%
Mid level cloud: 45%
High level cloud: 21%
Most Significant Cloud Type: medium
59%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SE
SE

 1 / 2 mph 41 / 41°F 89% 1002 mb
Low level cloud: 42%
Mid level cloud: 64%
High level cloud: 57%
Most Significant Cloud Type: low
70%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 14
Mar		01:00

ESE
ESE

 4 / 5 mph 37 / 34°F 97% 1003 mb
Low level cloud: 99%
Mid level cloud: 85%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SE
SE

 4 / 5 mph 36 / 33°F 97% 1003 mb
Low level cloud: 96%
Mid level cloud: 58%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

SE
SE

 3 / 4 mph 36 / 34°F 97% 1004 mb
Low level cloud: 94%
Mid level cloud: 76%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

SSE
SSE

 4 / 5 mph 38 / 35°F 97% 1004 mb
Low level cloud: 92%
Mid level cloud: 77%
High level cloud: 98%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

SE
SE

 3 / 5 mph 39 / 37°F 98% 1002 mb
Low level cloud: 96%
Mid level cloud: 85%
High level cloud: 66%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
16:00

WSW
WSW

 1 / 2 mph 39 / 39°F 98% 1001 mb
Low level cloud: 95%
Mid level cloud: 85%
High level cloud: 32%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
19:00

WNW
WNW

 2 / 4 mph 39 / 38°F 97% 1003 mb
Low level cloud: 72%
Mid level cloud: 46%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

NNW
NNW

 4 / 6 mph 38 / 35°F 97% 1003 mb
Low level cloud: 70%
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
Sat 15
Mar		01:00

NW
NW

 4 / 7 mph 35 / 32°F 98% 1004 mb
Low level cloud: 80%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

NNW
NNW

 3 / 6 mph 34 / 31°F 98% 1006 mb
Low level cloud: 95%
Mid level cloud: 99%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
07:00

NNW
NNW

 3 / 5 mph 33 / 31°F 98% 1008 mb
Low level cloud: 95%
Mid level cloud: 70%
High level cloud: 19%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

N
N

 3 / 4 mph 36 / 34°F 98% 1010 mb
Low level cloud: 96%
Mid level cloud: 71%
High level cloud: 33%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

NNE
NNE

 2 / 2 mph 38 / 37°F 98% 1011 mb
Low level cloud: 93%
Mid level cloud: 73%
High level cloud: 60%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

NNE
NNE

 3 / 4 mph 39 / 37°F 99% 1012 mb
Low level cloud: 96%
Mid level cloud: 71%
High level cloud: 3%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

N
N

 3 / 4 mph 38 / 35°F 98% 1013 mb
Low level cloud: 92%
Mid level cloud: 83%
High level cloud: 13%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

NNW
NNW

 4 / 4 mph 36 / 33°F 97% 1015 mb
Low level cloud: 84%
Mid level cloud: 33%
High level cloud: 11%
Most Significant Cloud Type: low
96%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 16
Mar		01:00

NNW
NNW

 4 / 5 mph 32 / 29°F 96% 1016 mb
Low level cloud: 79%
Mid level cloud: 45%
High level cloud: 16%
Most Significant Cloud Type: low
96%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

NNW
NNW

 4 / 5 mph 32 / 28°F 95% 1016 mb
Low level cloud: 74%
Mid level cloud: 44%
High level cloud: 89%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

NNW
NNW

 4 / 6 mph 31 / 27°F 93% 1017 mb
Low level cloud: 67%
Mid level cloud: 45%
High level cloud: 20%
Most Significant Cloud Type: low
85%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

N
N

 3 / 4 mph 34 / 31°F 87% 1018 mb
Low level cloud: 75%
Mid level cloud: 45%
High level cloud: 21%
Most Significant Cloud Type: low
93%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

NNE
NNE

 2 / 3 mph 38 / 36°F 80% 1018 mb
Low level cloud: 91%
Mid level cloud: 44%
High level cloud: 12%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

NNE
NNE

 3 / 4 mph 36 / 33°F 87% 1019 mb
Low level cloud: 92%
Mid level cloud: 67%
High level cloud: 69%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

N
N

 3 / 4 mph 33 / 30°F 92% 1021 mb
Low level cloud: 80%
Mid level cloud: 52%
High level cloud: 15%
Most Significant Cloud Type: low
99%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

NNW
NNW

 2 / 4 mph 32 / 30°F 91% 1022 mb
Low level cloud: 67%
Mid level cloud: 41%
High level cloud: 13%
Most Significant Cloud Type: low
83%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 17
Mar		01:00

N
N

 2 / 2 mph 33 / 33°F 93% 1023 mb
Low level cloud: 83%
Mid level cloud: 45%
High level cloud: 0%
Most Significant Cloud Type: low
98%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

N
N

 2 / 2 mph 32 / 32°F 94% 1023 mb
Low level cloud: 80%
Mid level cloud: 45%
High level cloud: 0%
Most Significant Cloud Type: low
95%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

NE
NE

 1 / 2 mph 32 / 32°F 90% 1024 mb
Low level cloud: 67%
Mid level cloud: 44%
High level cloud: 32%
Most Significant Cloud Type: low
85%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

E
E

 3 / 4 mph 35 / 33°F 83% 1024 mb
Low level cloud: 89%
Mid level cloud: 90%
High level cloud: 32%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

ESE
ESE

 3 / 4 mph 38 / 36°F 88% 1025 mb
Low level cloud: 93%
Mid level cloud: 80%
High level cloud: 12%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

ESE
ESE

 3 / 4 mph 39 / 37°F 86% 1025 mb
Low level cloud: 61%
Mid level cloud: 27%
High level cloud: 6%
Most Significant Cloud Type: low
71%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

ESE
ESE

 2 / 2 mph 37 / 37°F 84% 1026 mb
Low level cloud: 58%
Mid level cloud: 56%
High level cloud: 28%
Most Significant Cloud Type: low
80%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SE
SE

 2 / 3 mph 35 / 35°F 89% 1026 mb
Low level cloud: 8%
Mid level cloud: 37%
High level cloud: 5%
Most Significant Cloud Type: medium
58%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 18
Mar		01:00

SSE
SSE

 3 / 6 mph 33 / 30°F 86% 1026 mb
Low level cloud: 3%
Mid level cloud: 48%
High level cloud: 12%
Most Significant Cloud Type: medium
58%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SE
SE

 3 / 5 mph 32 / 29°F 95% 1026 mb
Low level cloud: 60%
Mid level cloud: 55%
High level cloud: 0%
Most Significant Cloud Type: low
79%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

ESE
ESE

 3 / 5 mph 32 / 28°F 97% 1026 mb
Low level cloud: 88%
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
10:00

ESE
ESE

 4 / 5 mph 34 / 30°F 99% 1026 mb
Low level cloud: 97%
Mid level cloud: 56%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
13:00

SE
SE

 5 / 5 mph 35 / 31°F 99% 1025 mb
Low level cloud: 96%
Mid level cloud: 71%
High level cloud: 20%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
16:00

SSE
SSE

 4 / 5 mph 36 / 32°F 95% 1025 mb
Low level cloud: 75%
Mid level cloud: 45%
High level cloud: 0%
Most Significant Cloud Type: low
90%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
19:00

SSE
SSE

 4 / 5 mph 35 / 31°F 99% 1025 mb
Low level cloud: 92%
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
22:00

SSE
SSE

 5 / 6 mph 34 / 29°F 99% 1025 mb
Low level cloud: 90%
Mid level cloud: 43%
High level cloud: 17%
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
Wed 19
Mar		01:00

WSW
WSW

 4 / 5 mph 36 / 33°F 92% 1014 mb
Low level cloud: 18%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: low
21%
0.0 In
07:00

SW
SW

 3 / 4 mph 33 / 31°F 89% 1014 mb
Low level cloud: 12%
Mid level cloud: 21%
High level cloud: 100%
Most Significant Cloud Type: medium
57%
0.0 In
13:00

SSE
SSE

 7 / 11 mph 35 / 29°F 94% 1028 mb
Low level cloud: 85%
Mid level cloud: 28%
High level cloud: 0%
Most Significant Cloud Type: low
94%
0.0 In
19:00

S
S

 6 / 9 mph 33 / 27°F 98% 1025 mb
Low level cloud: 85%
Mid level cloud: 40%
High level cloud: 32%
Most Significant Cloud Type: low
100%
0.0 In
Thu 20
Mar		01:00

SSW
SSW

 7 / 13 mph 27 / 20°F 86% 1036 mb
Low level cloud: 1%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
07:00

SW
SW

 4 / 6 mph 34 / 30°F 94% 1015 mb
Low level cloud: 41%
Mid level cloud: 39%
High level cloud: 98%
Most Significant Cloud Type: low
66%
0.0 In
13:00

SSW
SSW

 9 / 13 mph 46 / 42°F 74% 1004 mb
Low level cloud: 3%
Mid level cloud: 9%
High level cloud: 9%
Most Significant Cloud Type: low
7%
0.0 In
19:00

S
S

 7 / 10 mph 38 / 32°F 93% 1026 mb
Low level cloud: 47%
Mid level cloud: 4%
High level cloud: 2%
Most Significant Cloud Type: low
48%
0.0 In
Fri 21
Mar		01:00

SSW
SSW

 6 / 11 mph 41 / 37°F 96% 1004 mb
Low level cloud: 57%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: low
72%
0.0 In
07:00

S
S

 7 / 10 mph 33 / 27°F 97% 1026 mb
Low level cloud: 75%
Mid level cloud: 7%
High level cloud: 17%
Most Significant Cloud Type: low
100%
0.0 In
13:00

SSW
SSW

 9 / 13 mph 52 / 49°F 56% 1003 mb
Low level cloud: 0%
Mid level cloud: 18%
High level cloud: 0%
Most Significant Cloud Type: medium
17%
0.0 In
19:00

S
S

 6 / 11 mph 39 / 34°F 92% 1020 mb
Low level cloud: 53%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: low
68%
0.0 In
Sat 22
Mar		01:00

W
W

 4 / 6 mph 40 / 38°F 90% 1015 mb
Low level cloud: 7%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: low
10%
0.1 In
07:00

S
S

 4 / 6 mph 38 / 35°F 94% 1017 mb
Low level cloud: 68%
Mid level cloud: 4%
High level cloud: 15%
Most Significant Cloud Type: low
71%
0.0 In
13:00

SSE
SSE

 4 / 7 mph 47 / 46°F 70% 1015 mb
Low level cloud: 9%
Mid level cloud: 58%
High level cloud: 33%
Most Significant Cloud Type: medium
84%
0.0 In
19:00

S
S

 7 / 12 mph 44 / 40°F 88% 1014 mb
Low level cloud: 20%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
36%
0.0 In
Sun 23
Mar		01:00

SSE
SSE

 1 / 2 mph 43 / 44°F 94% 1015 mb
Low level cloud: 26%
Mid level cloud: 11%
High level cloud: 100%
Most Significant Cloud Type: low
42%
0.0 In
07:00

S
S

 6 / 9 mph 37 / 32°F 95% 1016 mb
Low level cloud: 53%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: low
57%
0.0 In
13:00

S
S

 4 / 6 mph 45 / 44°F 85% 1009 mb
Low level cloud: 68%
Mid level cloud: 61%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.1 In
19:00

S
S

 4 / 6 mph 43 / 40°F 97% 1017 mb
Low level cloud: 79%
Mid level cloud: 18%
High level cloud: 0%
Most Significant Cloud Type: low
85%
0.0 In
Mon 24
Mar		01:00

NW
NW

 6 / 12 mph 35 / 30°F 95% 1011 mb
Low level cloud: 49%
Mid level cloud: 43%
High level cloud: 62%
Most Significant Cloud Type: low
72%
0.0 In
07:00

SSW
SSW

 4 / 6 mph 41 / 39°F 96% 1017 mb
Low level cloud: 63%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: low
66%
0.0 In
13:00

NW
NW

 10 / 16 mph 38 / 32°F 91% 1008 mb
Low level cloud: 42%
Mid level cloud: 90%
High level cloud: 100%
Most Significant Cloud Type: low
84%
0.3 In
19:00

S
S

 4 / 5 mph 46 / 44°F 94% 1019 mb
Low level cloud: 31%
Mid level cloud: 46%
High level cloud: 15%
Most Significant Cloud Type: low
48%
0.0 In
Tue 25
Mar		01:00

NW
NW

 10 / 16 mph 32 / 24°F 95% 1007 mb
Low level cloud: 43%
Mid level cloud: 36%
High level cloud: 95%
Most Significant Cloud Type: low
67%
0.5 In
07:00

SSE
SSE

 5 / 7 mph 43 / 40°F 97% 1019 mb
Low level cloud: 75%
Mid level cloud: 54%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
13:00

NW
NW

 9 / 14 mph 34 / 27°F 91% 1009 mb
Low level cloud: 54%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
69%
0.2 In
19:00

S
S

 5 / 8 mph 49 / 47°F 84% 1017 mb
Low level cloud: 4%
Mid level cloud: 47%
High level cloud: 1%
Most Significant Cloud Type: medium
58%
0.0 In
Wed 26
Mar		01:00

NNW
NNW

 12 / 20 mph 31 / 21°F 97% 1014 mb
Low level cloud: 69%
Mid level cloud: 30%
High level cloud: 34%
Most Significant Cloud Type: low
83%
0.3 In
07:00

S
S

 5 / 8 mph 40 / 36°F 90% 1014 mb
Low level cloud: 31%
Mid level cloud: 15%
High level cloud: 41%
Most Significant Cloud Type: low
41%
0.0 In
13:00

NNW
NNW

 15 / 24 mph 33 / 23°F 93% 1015 mb
Low level cloud: 61%
Mid level cloud: 46%
High level cloud: 100%
Most Significant Cloud Type: low
89%
0.2 In
19:00

S
S

 5 / 8 mph 44 / 42°F 95% 1010 mb
Low level cloud: 78%
Mid level cloud: 44%
High level cloud: 47%
Most Significant Cloud Type: low
98%
0.0 In
Thu 27
Mar		01:00

NNW
NNW

 12 / 21 mph 31 / 21°F 91% 1018 mb
Low level cloud: 47%
Mid level cloud: 25%
High level cloud: 100%
Most Significant Cloud Type: low
67%
0.0 In
07:00

NW
NW

 3 / 4 mph 43 / 42°F 92% 1011 mb
Low level cloud: 33%
Mid level cloud: 46%
High level cloud: 7%
Most Significant Cloud Type: low
49%
0.0 In
13:00

NW
NW

 8 / 13 mph 36 / 30°F 84% 1018 mb
Low level cloud: 1%
Mid level cloud: 32%
High level cloud: 100%
Most Significant Cloud Type: medium
37%
0.0 In
19:00

ENE
ENE

 2 / 4 mph 44 / 44°F 96% 1013 mb
Low level cloud: 56%
Mid level cloud: 92%
High level cloud: 27%
Most Significant Cloud Type: low
91%
0.1 In

Other Locations Near to Semmering Pass

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