WEATHER FOR BUSINESS

We supply weather data to businesses

Free Weather Plugin

Add this forecast to your website



Local Weather

South Deerfield 14 Day Long Range Forecast

14 Day weather providing an extended long range forecast outlook for South Deerfield

Massachusetts, United States Of America

Long range weather outlook for South Deerfield includes 14 day forecast summary:

The next 14 day outlook for South Deerfield shows the average daytime maximum temperature will be around 17°C, with a high for the two weeks of 25°C expected on the afternoon of Thursday 24th. The mean minimum temperature will be 5°C, dipping to its lowest on the morning of Monday 28th at 0°C. Expect the following 14 days ahead to have some days seeing a little precipitation and some days with rain. The indicators are that Saturday 26th will have the most precipitation with an accumulation of around 25.0mm. On the whole winds are likely to be moderate.

DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Sun 20
Apr
16:00

NNW
NNW

11 / 13 mph 59 / 55°F 35% 1025 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 69%
Most Significant Cloud Type: high
69%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

NW
NW

4 / 7 mph 49 / 47°F 51% 1027 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

N
N

4 / 6 mph 43 / 41°F 62% 1028 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
Mon 21
Apr
01:00

NW
NW

2 / 5 mph 36 / 35°F 68% 1028 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 10%
Most Significant Cloud Type: high
9%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

WNW
WNW

2 / 5 mph 34 / 33°F 70% 1028 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 83%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

S
S

0 / 0 mph 46 / 45°F 52% 1027 mb
Low level cloud: 0%
Mid level cloud: 13%
High level cloud: 14%
Most Significant Cloud Type: medium
13%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

SSW
SSW

5 / 6 mph 58 / 56°F 37% 1025 mb
Low level cloud: 0%
Mid level cloud: 23%
High level cloud: 15%
Most Significant Cloud Type: medium
24%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

SSW
SSW

7 / 9 mph 66 / 64°F 34% 1021 mb
Low level cloud: 0%
Mid level cloud: 42%
High level cloud: 22%
Most Significant Cloud Type: medium
43%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

S
S

10 / 14 mph 53 / 49°F 53% 1020 mb
Low level cloud: 5%
Mid level cloud: 79%
High level cloud: 100%
Most Significant Cloud Type: medium
98%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

S
S

9 / 15 mph 51 / 47°F 55% 1019 mb
Low level cloud: 40%
Mid level cloud: 44%
High level cloud: 93%
Most Significant Cloud Type: low
66%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

S
S

7 / 11 mph 47 / 44°F 59% 1018 mb
Low level cloud: 54%
Mid level cloud: 100%
High level cloud: 33%
Most Significant Cloud Type: low
93%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 22
Apr
01:00

S
S

6 / 9 mph 47 / 44°F 79% 1016 mb
Low level cloud: 98%
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
04:00

S
S

5 / 7 mph 48 / 46°F 95% 1014 mb
Low level cloud: 97%
Mid level cloud: 43%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

SSW
SSW

4 / 5 mph 54 / 53°F 95% 1014 mb
Low level cloud: 97%
Mid level cloud: 25%
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

W
W

8 / 9 mph 67 / 65°F 67% 1013 mb
Low level cloud: 71%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: low
70%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

W
W

12 / 14 mph 69 / 68°F 47% 1012 mb
Low level cloud: 1%
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

W
W

11 / 13 mph 68 / 67°F 46% 1013 mb
Low level cloud: 0%
Mid level cloud: 20%
High level cloud: 1%
Most Significant Cloud Type: medium
20%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

NW
NW

11 / 16 mph 49 / 45°F 67% 1017 mb
Low level cloud: 0%
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
22:00

WNW
WNW

10 / 15 mph 45 / 40°F 68% 1019 mb
Low level cloud: 1%
Mid level cloud: 0%
High level cloud: 1%
Most Significant Cloud Type: low
1%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 23
Apr
01:00

NW
NW

8 / 12 mph 43 / 38°F 70% 1019 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
04:00

NW
NW

4 / 7 mph 37 / 34°F 81% 1020 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 22%
Most Significant Cloud Type: high
22%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

NW
NW

4 / 5 mph 47 / 45°F 64% 1022 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
10:00

NW
NW

6 / 7 mph 59 / 57°F 44% 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
13:00

NW
NW

7 / 8 mph 67 / 65°F 39% 1021 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 1%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

NW
NW

7 / 8 mph 67 / 65°F 41% 1021 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
19:00

WNW
WNW

2 / 5 mph 53 / 52°F 67% 1022 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 1%
Most Significant Cloud Type: medium
9%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

NW
NW

2 / 4 mph 47 / 47°F 75% 1023 mb
Low level cloud: 0%
Mid level cloud: 26%
High level cloud: 15%
Most Significant Cloud Type: medium
26%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 24
Apr
01:00

NNW
NNW

2 / 5 mph 44 / 43°F 84% 1025 mb
Low level cloud: 0%
Mid level cloud: 29%
High level cloud: 5%
Most Significant Cloud Type: medium
29%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

N
N

3 / 6 mph 42 / 41°F 89% 1025 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 43%
Most Significant Cloud Type: medium
11%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

NNE
NNE

2 / 2 mph 54 / 53°F 71% 1026 mb
Low level cloud: 1%
Mid level cloud: 40%
High level cloud: 21%
Most Significant Cloud Type: medium
42%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

WSW
WSW

2 / 2 mph 67 / 65°F 53% 1026 mb
Low level cloud: 14%
Mid level cloud: 21%
High level cloud: 13%
Most Significant Cloud Type: low
22%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

SW
SW

5 / 6 mph 77 / 76°F 43% 1023 mb
Low level cloud: 0%
Mid level cloud: 27%
High level cloud: 32%
Most Significant Cloud Type: medium
28%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

WNW
WNW

7 / 9 mph 76 / 76°F 44% 1023 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 12%
Most Significant Cloud Type: medium
9%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

WNW
WNW

2 / 5 mph 60 / 59°F 72% 1024 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 100%
Most Significant Cloud Type: medium
10%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SSE
SSE

1 / 3 mph 53 / 53°F 84% 1024 mb
Low level cloud: 50%
Mid level cloud: 35%
High level cloud: 58%
Most Significant Cloud Type: low
68%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 25
Apr
01:00

N
N

5 / 9 mph 52 / 50°F 81% 1025 mb
Low level cloud: 37%
Mid level cloud: 50%
High level cloud: 100%
Most Significant Cloud Type: low
65%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

NE
NE

5 / 6 mph 51 / 50°F 78% 1027 mb
Low level cloud: 9%
Mid level cloud: 72%
High level cloud: 81%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

ENE
ENE

5 / 6 mph 54 / 51°F 73% 1028 mb
Low level cloud: 5%
Mid level cloud: 45%
High level cloud: 10%
Most Significant Cloud Type: medium
59%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

E
E

6 / 8 mph 65 / 62°F 58% 1027 mb
Low level cloud: 60%
Mid level cloud: 11%
High level cloud: 32%
Most Significant Cloud Type: low
67%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

SSE
SSE

7 / 9 mph 71 / 70°F 51% 1025 mb
Low level cloud: 76%
Mid level cloud: 45%
High level cloud: 11%
Most Significant Cloud Type: low
93%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

S
S

9 / 11 mph 59 / 57°F 65% 1023 mb
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 33%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

SSE
SSE

7 / 10 mph 57 / 54°F 74% 1023 mb
Low level cloud: 47%
Mid level cloud: 92%
High level cloud: 100%
Most Significant Cloud Type: low
91%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SE
SE

8 / 11 mph 53 / 50°F 97% 1021 mb
Low level cloud: 100%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
Sat 26
Apr
01:00

SSE
SSE

11 / 15 mph 54 / 50°F 97% 1018 mb
Low level cloud: 100%
Mid level cloud: 74%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.3 In of precipitation over the past 3 hours.
0.3 In
04:00

S
S

13 / 18 mph 55 / 51°F 97% 1014 mb
Low level cloud: 100%
Mid level cloud: 85%
High level cloud: 95%
Most Significant Cloud Type: low
100%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
07:00

S
S

8 / 11 mph 55 / 53°F 98% 1013 mb
Low level cloud: 100%
Mid level cloud: 79%
High level cloud: 89%
Most Significant Cloud Type: low
100%
Expect 0.4 In of precipitation over the past 3 hours.
0.4 In
10:00

W
W

6 / 8 mph 57 / 56°F 94% 1013 mb
Low level cloud: 70%
Mid level cloud: 50%
High level cloud: 85%
Most Significant Cloud Type: low
98%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

WNW
WNW

12 / 14 mph 60 / 59°F 50% 1014 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 79%
Most Significant Cloud Type: high
79%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

WNW
WNW

12 / 14 mph 58 / 55°F 54% 1015 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 4%
Most Significant Cloud Type: high
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

WNW
WNW

12 / 21 mph 48 / 42°F 62% 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
22:00

WNW
WNW

13 / 20 mph 45 / 38°F 66% 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
DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Sun 27
Apr
01:00

NNW
NNW

6 / 13 mph 38 / 33°F 75% 1022 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
07:00

N
N

3 / 6 mph 55 / 55°F 61% 1026 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
13:00

WNW
WNW

7 / 13 mph 68 / 68°F 29% 1026 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
6%
0.0 In
19:00

NNE
NNE

4 / 8 mph 49 / 48°F 51% 1031 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
Mon 28
Apr
01:00

WNW
WNW

3 / 6 mph 39 / 38°F 69% 1030 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 4%
Most Significant Cloud Type: high
4%
0.0 In
07:00

WNW
WNW

4 / 5 mph 47 / 46°F 44% 1029 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 1%
Most Significant Cloud Type: high
1%
0.0 In
13:00

NW
NW

10 / 13 mph 64 / 64°F 31% 1023 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

3 / 5 mph 50 / 50°F 58% 1023 mb
Low level cloud: 0%
Mid level cloud: 58%
High level cloud: 45%
Most Significant Cloud Type: medium
59%
0.0 In
Tue 29
Apr
01:00

SW
SW

3 / 7 mph 45 / 44°F 70% 1022 mb
Low level cloud: 0%
Mid level cloud: 22%
High level cloud: 100%
Most Significant Cloud Type: medium
25%
0.0 In
07:00

ESE
ESE

1 / 2 mph 48 / 48°F 73% 1020 mb
Low level cloud: 35%
Mid level cloud: 94%
High level cloud: 2%
Most Significant Cloud Type: low
68%
0.0 In
13:00

SW
SW

14 / 17 mph 74 / 77°F 47% 1013 mb
Low level cloud: 5%
Mid level cloud: 69%
High level cloud: 33%
Most Significant Cloud Type: medium
84%
0.0 In
19:00

ENE
ENE

2 / 3 mph 50 / 51°F 100% 1012 mb
Low level cloud: 100%
Mid level cloud: 81%
High level cloud: 32%
Most Significant Cloud Type: low
100%
0.4 In
Wed 30
Apr
01:00

SW
SW

9 / 16 mph 62 / 62°F 74% 1009 mb
Low level cloud: 0%
Mid level cloud: 24%
High level cloud: 5%
Most Significant Cloud Type: medium
24%
0.0 In
07:00

S
S

3 / 4 mph 54 / 54°F 98% 1008 mb
Low level cloud: 97%
Mid level cloud: 76%
High level cloud: 6%
Most Significant Cloud Type: low
100%
0.1 In
13:00

SW
SW

15 / 19 mph 84 / 83°F 36% 1005 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
6%
0.0 In
19:00

WSW
WSW

9 / 19 mph 66 / 66°F 85% 1001 mb
Low level cloud: 12%
Mid level cloud: 25%
High level cloud: 100%
Most Significant Cloud Type: low
32%
0.1 In
Thu 01
May
01:00

SSW
SSW

12 / 17 mph 63 / 63°F 76% 1001 mb
Low level cloud: 66%
Mid level cloud: 33%
High level cloud: 8%
Most Significant Cloud Type: low
78%
0.0 In
07:00

NW
NW

9 / 18 mph 54 / 51°F 78% 1008 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 43%
Most Significant Cloud Type: medium
47%
0.2 In
13:00

WNW
WNW

18 / 26 mph 60 / 60°F 67% 1005 mb
Low level cloud: 68%
Mid level cloud: 29%
High level cloud: 0%
Most Significant Cloud Type: low
78%
0.2 In
19:00

WNW
WNW

9 / 20 mph 47 / 42°F 70% 1012 mb
Low level cloud: 8%
Mid level cloud: 4%
High level cloud: 100%
Most Significant Cloud Type: medium
30%
0.0 In
Fri 02
May
01:00

WSW
WSW

4 / 6 mph 43 / 41°F 79% 1019 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 13%
Most Significant Cloud Type: high
13%
0.0 In
07:00

NW
NW

1 / 3 mph 53 / 53°F 63% 1020 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
13:00

WSW
WSW

8 / 12 mph 68 / 68°F 36% 1018 mb
Low level cloud: 0%
Mid level cloud: 25%
High level cloud: 3%
Most Significant Cloud Type: medium
25%
0.0 In
19:00

SSW
SSW

5 / 11 mph 52 / 50°F 67% 1017 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 20%
Most Significant Cloud Type: medium
4%
0.0 In
Sat 03
May
01:00

S
S

6 / 11 mph 45 / 42°F 76% 1017 mb
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
0.0 In
07:00

S
S

4 / 7 mph 52 / 52°F 65% 1018 mb
Low level cloud: 0%
Mid level cloud: 54%
High level cloud: 32%
Most Significant Cloud Type: medium
55%
0.0 In
13:00

NW
NW

3 / 4 mph 54 / 55°F 93% 1015 mb
Low level cloud: 85%
Mid level cloud: 87%
High level cloud: 57%
Most Significant Cloud Type: low
100%
0.1 In
19:00

S
S

3 / 6 mph 58 / 59°F 75% 1016 mb
Low level cloud: 0%
Mid level cloud: 19%
High level cloud: 32%
Most Significant Cloud Type: medium
20%
0.0 In
Sun 04
May
01:00

NW
NW

3 / 6 mph 38 / 36°F 95% 1020 mb
Low level cloud: 1%
Mid level cloud: 49%
High level cloud: 0%
Most Significant Cloud Type: medium
53%
0.2 In
07:00

N
N

8 / 17 mph 49 / 45°F 82% 1017 mb
Low level cloud: 82%
Mid level cloud: 87%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
13:00

NNE
NNE

3 / 5 mph 64 / 64°F 34% 1021 mb
Low level cloud: 0%
Mid level cloud: 59%
High level cloud: 0%
Most Significant Cloud Type: medium
59%
0.0 In
19:00

N
N

5 / 11 mph 50 / 48°F 56% 1019 mb
Low level cloud: 0%
Mid level cloud: 13%
High level cloud: 0%
Most Significant Cloud Type: medium
12%
0.0 In
Mon 05
May
01:00

NW
NW

2 / 3 mph 40 / 40°F 94% 1025 mb
Low level cloud: 2%
Mid level cloud: 27%
High level cloud: 0%
Most Significant Cloud Type: medium
33%
0.0 In
07:00

N
N

4 / 8 mph 54 / 54°F 52% 1023 mb
Low level cloud: 0%
Mid level cloud: 16%
High level cloud: 0%
Most Significant Cloud Type: medium
16%
0.0 In
13:00

NE
NE

6 / 11 mph 61 / 61°F 39% 1026 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: medium
45%
0.0 In
19:00

NW
NW

5 / 10 mph 47 / 45°F 77% 1021 mb
Low level cloud: 0%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: medium
11%
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