Fast Forecast

WEATHER FOR BUSINESS

We supply weather data to businesses

Free Weather Plugin

Add this forecast to your website



Local Weather

Ski Liberty 14 Day Long Range Forecast

14 Day weather providing an extended long range forecast outlook for Ski Liberty

Pennsylvania, United States Of America

Long range weather outlook for Ski Liberty includes 14 day forecast summary:

Taking a look at Ski Liberty over the coming two weeks and the average daytime maximum temperature will be around 7°C, with a high for the two weeks of 12°C expected on the morning of Friday 19th. The mean minimum temperature will be -3°C, dipping to its lowest on the morning of Tuesday 16th at -12°C. Expect the coming 14 days to have mixed overhead conditions with some days dry and some seeing a significant amount of rain or snow. Predictions are Thursday 25th will have the most precipitation with an accumulation of around 7.0mm. On the whole winds are likely to be moderate.

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Mon 15
Dec		01:00

NW
NW

 15 / 23 mph 15 / 0°F 72% 1028 mb
Low level cloud: 12%
Mid level cloud: 4%
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

NW
NW

 14 / 21 mph 15 / 0°F 73% 1030 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
07:00

W
W

 9 / 15 mph 13 / 1°F 79% 1032 mb
Low level cloud: 8%
Mid level cloud: 4%
High level cloud: 97%
Most Significant Cloud Type: medium
30%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

WNW
WNW

 13 / 15 mph 19 / 6°F 67% 1031 mb
Low level cloud: 5%
Mid level cloud: 74%
High level cloud: 92%
Most Significant Cloud Type: medium
92%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

WNW
WNW

 12 / 13 mph 22 / 11°F 65% 1029 mb
Low level cloud: 23%
Mid level cloud: 63%
High level cloud: 82%
Most Significant Cloud Type: low
54%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

W
W

 7 / 9 mph 22 / 13°F 74% 1027 mb
Low level cloud: 19%
Mid level cloud: 100%
High level cloud: 36%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

SW
SW

 4 / 8 mph 18 / 11°F 92% 1026 mb
Low level cloud: 4%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: medium
58%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SSW
SSW

 3 / 7 mph 13 / 8°F 90% 1025 mb
Low level cloud: 0%
Mid level cloud: 11%
High level cloud: 69%
Most Significant Cloud Type: medium
14%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 16
Dec		19:00

SSE
SSE

 4 / 9 mph 21 / 15°F 87% 1022 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 5%
Most Significant Cloud Type: high
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

S
S

 4 / 9 mph 19 / 13°F 86% 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 17
Dec		01:00

SW
SW

 4 / 9 mph 19 / 12°F 86% 1020 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
04:00

SSW
SSW

 6 / 12 mph 21 / 13°F 83% 1018 mb
Low level cloud: 0%
Mid level cloud: 13%
High level cloud: 6%
Most Significant Cloud Type: medium
13%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

SW
SW

 7 / 14 mph 24 / 15°F 83% 1017 mb
Low level cloud: 0%
Mid level cloud: 17%
High level cloud: 52%
Most Significant Cloud Type: medium
18%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

SW
SW

 8 / 17 mph 36 / 29°F 67% 1016 mb
Low level cloud: 1%
Mid level cloud: 8%
High level cloud: 100%
Most Significant Cloud Type: medium
15%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

WSW
WSW

 15 / 21 mph 46 / 40°F 64% 1014 mb
Low level cloud: 0%
Mid level cloud: 79%
High level cloud: 100%
Most Significant Cloud Type: medium
82%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

W
W

 13 / 22 mph 42 / 35°F 74% 1016 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 46%
Most Significant Cloud Type: high
45%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

NW
NW

 9 / 18 mph 33 / 26°F 88% 1022 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
22:00

WSW
WSW

 4 / 9 mph 29 / 24°F 91% 1023 mb
Low level cloud: 11%
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
Thu 18
Dec		01:00

WSW
WSW

 3 / 6 mph 27 / 24°F 92% 1024 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 20%
Most Significant Cloud Type: high
19%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

ESE
ESE

 3 / 6 mph 25 / 22°F 91% 1024 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 89%
Most Significant Cloud Type: high
88%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

SSE
SSE

 4 / 9 mph 25 / 19°F 94% 1024 mb
Low level cloud: 5%
Mid level cloud: 15%
High level cloud: 5%
Most Significant Cloud Type: medium
28%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

SSE
SSE

 7 / 8 mph 38 / 33°F 80% 1023 mb
Low level cloud: 4%
Mid level cloud: 63%
High level cloud: 2%
Most Significant Cloud Type: medium
74%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

S
S

 9 / 11 mph 44 / 38°F 75% 1018 mb
Low level cloud: 4%
Mid level cloud: 43%
High level cloud: 0%
Most Significant Cloud Type: medium
55%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

SSE
SSE

 6 / 11 mph 39 / 35°F 89% 1016 mb
Low level cloud: 3%
Mid level cloud: 67%
High level cloud: 100%
Most Significant Cloud Type: medium
79%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

S
S

 9 / 18 mph 36 / 29°F 94% 1013 mb
Low level cloud: 92%
Mid level cloud: 46%
High level cloud: 14%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

S
S

 13 / 23 mph 45 / 39°F 97% 1008 mb
Low level cloud: 99%
Mid level cloud: 56%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 19
Dec		01:00

S
S

 20 / 32 mph 53 / 47°F 96% 1001 mb
Low level cloud: 99%
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
04:00

S
S

 20 / 30 mph 54 / 49°F 94% 996 mb
Low level cloud: 100%
Mid level cloud: 77%
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

W
W

 16 / 23 mph 42 / 34°F 87% 999 mb
Low level cloud: 39%
Mid level cloud: 63%
High level cloud: 6%
Most Significant Cloud Type: low
62%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
10:00

W
W

 16 / 18 mph 45 / 37°F 71% 1002 mb
Low level cloud: 6%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: low
10%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

W
W

 23 / 27 mph 38 / 27°F 61% 1005 mb
Low level cloud: 17%
Mid level cloud: 30%
High level cloud: 0%
Most Significant Cloud Type: low
27%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

WNW
WNW

 21 / 25 mph 30 / 17°F 63% 1010 mb
Low level cloud: 34%
Mid level cloud: 8%
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

WNW
WNW

 18 / 26 mph 28 / 15°F 63% 1014 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
22:00

WNW
WNW

 15 / 21 mph 27 / 15°F 67% 1018 mb
Low level cloud: 22%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
21%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 20
Dec		01:00

WNW
WNW

 12 / 16 mph 26 / 15°F 69% 1020 mb
Low level cloud: 4%
Mid level cloud: 0%
High level cloud: 3%
Most Significant Cloud Type: low
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

W
W

 8 / 12 mph 26 / 17°F 70% 1023 mb
Low level cloud: 0%
Mid level cloud: 16%
High level cloud: 59%
Most Significant Cloud Type: medium
18%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

WNW
WNW

 4 / 5 mph 28 / 23°F 64% 1023 mb
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 17%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

SSW
SSW

 5 / 5 mph 33 / 28°F 52% 1023 mb
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 71%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

S
S

 9 / 11 mph 40 / 33°F 43% 1020 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 17%
Most Significant Cloud Type: medium
46%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

S
S

 10 / 15 mph 38 / 31°F 54% 1018 mb
Low level cloud: 0%
Mid level cloud: 62%
High level cloud: 100%
Most Significant Cloud Type: medium
66%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

SSE
SSE

 7 / 16 mph 32 / 25°F 67% 1018 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 89%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

S
S

 8 / 17 mph 31 / 23°F 73% 1016 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 100%
Most Significant Cloud Type: medium
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 21
Dec		01:00

SSW
SSW

 8 / 17 mph 31 / 24°F 78% 1014 mb
Low level cloud: 0%
Mid level cloud: 85%
High level cloud: 18%
Most Significant Cloud Type: medium
85%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SSW
SSW

 8 / 16 mph 31 / 24°F 76% 1013 mb
Low level cloud: 30%
Mid level cloud: 27%
High level cloud: 30%
Most Significant Cloud Type: low
42%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

WSW
WSW

 7 / 14 mph 32 / 25°F 85% 1014 mb
Low level cloud: 14%
Mid level cloud: 7%
High level cloud: 34%
Most Significant Cloud Type: low
20%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

W
W

 14 / 17 mph 43 / 36°F 64% 1015 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

W
W

 19 / 22 mph 44 / 36°F 41% 1015 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
16:00

WNW
WNW

 20 / 25 mph 36 / 25°F 56% 1019 mb
Low level cloud: 24%
Mid level cloud: 2%
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

WNW
WNW

 18 / 26 mph 26 / 13°F 60% 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
22:00

WNW
WNW

 15 / 21 mph 26 / 14°F 63% 1027 mb
Low level cloud: 4%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Mon 22
Dec		01:00

ENE
ENE

 3 / 4 mph 30 / 26°F 81% 1031 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: high
99%
0.0 In
07:00

NW
NW

 13 / 19 mph 23 / 11°F 71% 1033 mb
Low level cloud: 13%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
13%
0.0 In
13:00

NNW
NNW

 14 / 17 mph 37 / 28°F 39% 1034 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
19:00

WNW
WNW

 7 / 15 mph 29 / 21°F 73% 1035 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
5%
0.0 In
Tue 23
Dec		01:00

S
S

 11 / 17 mph 29 / 20°F 62% 1030 mb
Low level cloud: 0%
Mid level cloud: 26%
High level cloud: 6%
Most Significant Cloud Type: medium
26%
0.0 In
07:00

S
S

 8 / 11 mph 30 / 23°F 72% 1030 mb
Low level cloud: 11%
Mid level cloud: 77%
High level cloud: 98%
Most Significant Cloud Type: medium
100%
0.0 In
13:00

SW
SW

 9 / 19 mph 44 / 39°F 99% 1010 mb
Low level cloud: 90%
Mid level cloud: 31%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
19:00

S
S

 4 / 6 mph 35 / 32°F 99% 1022 mb
Low level cloud: 96%
Mid level cloud: 88%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
Wed 24
Dec		01:00

SSW
SSW

 10 / 22 mph 39 / 33°F 74% 1018 mb
Low level cloud: 85%
Mid level cloud: 29%
High level cloud: 34%
Most Significant Cloud Type: low
98%
0.0 In
07:00

SW
SW

 4 / 9 mph 40 / 37°F 100% 1016 mb
Low level cloud: 78%
Mid level cloud: 24%
High level cloud: 0%
Most Significant Cloud Type: low
85%
0.0 In
13:00

WSW
WSW

 6 / 11 mph 52 / 49°F 90% 1018 mb
Low level cloud: 91%
Mid level cloud: 44%
High level cloud: 17%
Most Significant Cloud Type: low
100%
0.0 In
19:00

NW
NW

 7 / 15 mph 53 / 51°F 94% 1015 mb
Low level cloud: 88%
Mid level cloud: 10%
High level cloud: 10%
Most Significant Cloud Type: low
92%
0.0 In
Thu 25
Dec		01:00

ESE
ESE

 3 / 4 mph 50 / 50°F 97% 1021 mb
Low level cloud: 80%
Mid level cloud: 47%
High level cloud: 92%
Most Significant Cloud Type: low
100%
0.0 In
07:00

NNE
NNE

 6 / 10 mph 33 / 27°F 88% 1027 mb
Low level cloud: 8%
Mid level cloud: 46%
High level cloud: 100%
Most Significant Cloud Type: medium
72%
0.0 In
13:00

SW
SW

 9 / 16 mph 54 / 51°F 93% 1009 mb
Low level cloud: 88%
Mid level cloud: 44%
High level cloud: 31%
Most Significant Cloud Type: low
100%
0.3 In
19:00

SE
SE

 6 / 11 mph 34 / 28°F 71% 1026 mb
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
0.0 In
Fri 26
Dec		01:00

NW
NW

 8 / 16 mph 49 / 46°F 89% 1009 mb
Low level cloud: 82%
Mid level cloud: 28%
High level cloud: 36%
Most Significant Cloud Type: low
95%
0.0 In
07:00

S
S

 10 / 15 mph 38 / 31°F 99% 1006 mb
Low level cloud: 98%
Mid level cloud: 79%
High level cloud: 99%
Most Significant Cloud Type: low
100%
0.6 In
13:00

NNW
NNW

 11 / 14 mph 54 / 51°F 69% 1014 mb
Low level cloud: 70%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: low
82%
0.0 In
19:00

WNW
WNW

 17 / 23 mph 38 / 29°F 79% 1009 mb
Low level cloud: 69%
Mid level cloud: 0%
High level cloud: 17%
Most Significant Cloud Type: low
70%
0.1 In
Sat 27
Dec		01:00

N
N

 3 / 4 mph 39 / 37°F 80% 1016 mb
Low level cloud: 4%
Mid level cloud: 32%
High level cloud: 100%
Most Significant Cloud Type: medium
45%
0.0 In
07:00

NW
NW

 16 / 21 mph 25 / 12°F 71% 1015 mb
Low level cloud: 26%
Mid level cloud: 0%
High level cloud: 2%
Most Significant Cloud Type: low
26%
0.0 In
13:00

N
N

 6 / 7 mph 43 / 39°F 54% 1011 mb
Low level cloud: 93%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: low
95%
0.0 In
19:00

WNW
WNW

 13 / 19 mph 28 / 17°F 60% 1018 mb
Low level cloud: 75%
Mid level cloud: 23%
High level cloud: 0%
Most Significant Cloud Type: low
83%
0.0 In
Sun 28
Dec		01:00

N
N

 16 / 21 mph 25 / 12°F 58% 1018 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 50%
Most Significant Cloud Type: medium
47%
0.0 In
07:00

NW
NW

 12 / 18 mph 23 / 11°F 68% 1021 mb
Low level cloud: 6%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: medium
21%
0.0 In
13:00

NNW
NNW

 18 / 22 mph 34 / 24°F 32% 1026 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
19:00

NW
NW

 4 / 7 mph 27 / 22°F 67% 1023 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 13%
Most Significant Cloud Type: medium
46%
0.0 In
Mon 29
Dec		01:00

N
N

 8 / 13 mph 20 / 11°F 48% 1032 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
07:00

S
S

 5 / 9 mph 26 / 20°F 64% 1022 mb
Low level cloud: 0%
Mid level cloud: 22%
High level cloud: 80%
Most Significant Cloud Type: medium
25%
0.0 In
13:00

NW
NW

 5 / 7 mph 39 / 35°F 19% 1029 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
1%
0.0 In
19:00

SW
SW

 5 / 10 mph 35 / 30°F 83% 1019 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 58%
Most Significant Cloud Type: medium
47%
0.0 In
Tue 30
Dec		01:00

WSW
WSW

 3 / 7 mph 28 / 24°F 35% 1027 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 32%
Most Significant Cloud Type: medium
3%
0.0 In
07:00

SW
SW

 4 / 9 mph 38 / 35°F 94% 1019 mb
Low level cloud: 96%
Mid level cloud: 85%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.2 In
13:00

SSW
SSW

 7 / 10 mph 41 / 36°F 40% 1022 mb
Low level cloud: 0%
Mid level cloud: 52%
High level cloud: 10%
Most Significant Cloud Type: medium
52%
0.0 In
19:00

SW
SW

 4 / 9 mph 42 / 40°F 94% 1019 mb
Low level cloud: 92%
Mid level cloud: 43%
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.
(More Info)

Day

This time is corrected for local time zones and where possible for daylight saving times.
(More Info)

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.
(More Info)

Dir

This refers to the sustained average wind speed, normally averaged over a period of 10 minutes for up to 3 hrs.
(More Info)

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.
(More Info)

Temp/
Feels Like

The relative humidity is the percent of saturation humidity, generally calculated in relation to saturated vapour density.
(More Info)

Humidity

The value given is a total predicted for the previous 3 hrs and includes the time of the forecast being looked at.
(More Info)

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.
(More Info)

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.
(More Info)

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.
(More Info)

Pressure