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Lake Merwin 14 Day Long Range Forecast

14 Day weather providing an extended long range forecast outlook for Lake Merwin

Washington, United States Of America

Long range weather outlook for Lake Merwin includes 14 day forecast summary:

Taking a look at Lake Merwin over the coming two weeks and the average daytime maximum temperature will be around 17°C, with a high for the two weeks of 24°C expected on the afternoon of Saturday 25th. The mean minimum temperature will be 3°C, dipping to its lowest on the morning of Monday 20th at 0°C. The fortnight ahead will have most days seeing a little rain. The indicators are that Tuesday 21st will have the most precipitation with an accumulation of around 9.0mm. On the whole winds are likely to be light.

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Fri 17
May		01:00

WNW
WNW

 5 / 8 mph 46 / 44°F 93% 1018 mb
Low level cloud: 12%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
12%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

WNW
WNW

 2 / 5 mph 35 / 33°F 98% 1020 mb
Low level cloud: 25%
Mid level cloud: 0%
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

WNW
WNW

 5 / 6 mph 51 / 48°F 85% 1022 mb
Low level cloud: 74%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
73%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

NW
NW

 8 / 9 mph 57 / 54°F 56% 1021 mb
Low level cloud: 66%
Mid level cloud: 12%
High level cloud: 2%
Most Significant Cloud Type: low
70%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

WNW
WNW

 9 / 10 mph 64 / 62°F 44% 1021 mb
Low level cloud: 0%
Mid level cloud: 24%
High level cloud: 1%
Most Significant Cloud Type: medium
23%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

WNW
WNW

 9 / 11 mph 65 / 63°F 41% 1019 mb
Low level cloud: 0%
Mid level cloud: 23%
High level cloud: 0%
Most Significant Cloud Type: medium
22%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

WNW
WNW

 6 / 7 mph 53 / 50°F 66% 1020 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: medium
46%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

NNW
NNW

 3 / 6 mph 37 / 35°F 95% 1021 mb
Low level cloud: 14%
Mid level cloud: 0%
High level cloud: 15%
Most Significant Cloud Type: low
15%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 18
May		16:00

NW
NW

 11 / 13 mph 58 / 55°F 56% 1018 mb
Low level cloud: 26%
Mid level cloud: 83%
High level cloud: 0%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

WNW
WNW

 7 / 9 mph 49 / 45°F 73% 1019 mb
Low level cloud: 47%
Mid level cloud: 32%
High level cloud: 0%
Most Significant Cloud Type: low
58%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

NW
NW

 2 / 4 mph 35 / 34°F 96% 1021 mb
Low level cloud: 38%
Mid level cloud: 19%
High level cloud: 0%
Most Significant Cloud Type: low
44%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 19
May		01:00

NW
NW

 0 / 0 mph 34 / 34°F 97% 1022 mb
Low level cloud: 95%
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
04:00

SW
SW

 1 / 2 mph 42 / 42°F 93% 1023 mb
Low level cloud: 89%
Mid level cloud: 44%
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

SW
SW

 3 / 3 mph 47 / 46°F 90% 1024 mb
Low level cloud: 67%
Mid level cloud: 54%
High level cloud: 0%
Most Significant Cloud Type: low
85%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

WSW
WSW

 3 / 4 mph 52 / 51°F 74% 1024 mb
Low level cloud: 90%
Mid level cloud: 85%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

WSW
WSW

 4 / 5 mph 58 / 55°F 64% 1025 mb
Low level cloud: 36%
Mid level cloud: 45%
High level cloud: 0%
Most Significant Cloud Type: low
51%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

WNW
WNW

 6 / 8 mph 63 / 60°F 59% 1023 mb
Low level cloud: 53%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
69%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

WNW
WNW

 6 / 9 mph 53 / 49°F 65% 1023 mb
Low level cloud: 10%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: medium
71%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

NNW
NNW

 3 / 5 mph 37 / 36°F 92% 1025 mb
Low level cloud: 41%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
41%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 20
May		01:00

NNE
NNE

 2 / 5 mph 34 / 33°F 97% 1025 mb
Low level cloud: 19%
Mid level cloud: 1%
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

NE
NE

 2 / 3 mph 32 / 32°F 98% 1025 mb
Low level cloud: 47%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: low
47%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

WSW
WSW

 2 / 2 mph 50 / 49°F 82% 1025 mb
Low level cloud: 79%
Mid level cloud: 2%
High level cloud: 3%
Most Significant Cloud Type: low
79%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

SW
SW

 5 / 6 mph 59 / 56°F 64% 1024 mb
Low level cloud: 64%
Mid level cloud: 0%
High level cloud: 2%
Most Significant Cloud Type: low
63%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

W
W

 7 / 8 mph 70 / 67°F 41% 1021 mb
Low level cloud: 0%
Mid level cloud: 25%
High level cloud: 1%
Most Significant Cloud Type: medium
24%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

WNW
WNW

 10 / 11 mph 71 / 69°F 39% 1020 mb
Low level cloud: 0%
Mid level cloud: 23%
High level cloud: 3%
Most Significant Cloud Type: medium
22%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

WNW
WNW

 5 / 7 mph 54 / 52°F 69% 1021 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 20%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

NNW
NNW

 3 / 6 mph 39 / 37°F 95% 1023 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 14%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 21
May		01:00

N
N

 0 / 1 mph 35 / 35°F 97% 1023 mb
Low level cloud: 40%
Mid level cloud: 8%
High level cloud: 44%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

ESE
ESE

 2 / 3 mph 41 / 41°F 95% 1022 mb
Low level cloud: 99%
Mid level cloud: 83%
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

S
S

 2 / 3 mph 48 / 48°F 93% 1022 mb
Low level cloud: 100%
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
10:00

SE
SE

 2 / 3 mph 48 / 47°F 97% 1021 mb
Low level cloud: 100%
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
13:00

SSE
SSE

 3 / 3 mph 48 / 47°F 99% 1020 mb
Low level cloud: 100%
Mid level cloud: 100%
High level cloud: 34%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
16:00

SE
SE

 2 / 2 mph 48 / 48°F 99% 1018 mb
Low level cloud: 100%
Mid level cloud: 100%
High level cloud: 33%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
19:00

SSE
SSE

 2 / 2 mph 47 / 47°F 100% 1017 mb
Low level cloud: 100%
Mid level cloud: 90%
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

W
W

 2 / 2 mph 47 / 47°F 100% 1017 mb
Low level cloud: 99%
Mid level cloud: 14%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 22
May		01:00

WNW
WNW

 4 / 6 mph 45 / 43°F 97% 1017 mb
Low level cloud: 84%
Mid level cloud: 17%
High level cloud: 0%
Most Significant Cloud Type: low
89%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

WSW
WSW

 2 / 3 mph 43 / 43°F 96% 1016 mb
Low level cloud: 92%
Mid level cloud: 49%
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

WSW
WSW

 3 / 4 mph 45 / 44°F 95% 1016 mb
Low level cloud: 72%
Mid level cloud: 67%
High level cloud: 0%
Most Significant Cloud Type: low
95%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

WSW
WSW

 6 / 9 mph 51 / 48°F 92% 1015 mb
Low level cloud: 91%
Mid level cloud: 98%
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

W
W

 6 / 10 mph 50 / 48°F 92% 1015 mb
Low level cloud: 89%
Mid level cloud: 100%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
16:00

WNW
WNW

 4 / 6 mph 51 / 49°F 91% 1015 mb
Low level cloud: 83%
Mid level cloud: 45%
High level cloud: 0%
Most Significant Cloud Type: low
98%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
19:00

WSW
WSW

 2 / 3 mph 47 / 46°F 95% 1015 mb
Low level cloud: 43%
Mid level cloud: 22%
High level cloud: 0%
Most Significant Cloud Type: low
50%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

S
S

 2 / 4 mph 39 / 39°F 97% 1017 mb
Low level cloud: 76%
Mid level cloud: 28%
High level cloud: 34%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 23
May		01:00

SSW
SSW

 2 / 2 mph 42 / 42°F 99% 1018 mb
Low level cloud: 91%
Mid level cloud: 49%
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

 1 / 2 mph 42 / 42°F 99% 1018 mb
Low level cloud: 52%
Mid level cloud: 18%
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

 2 / 2 mph 50 / 49°F 91% 1018 mb
Low level cloud: 49%
Mid level cloud: 17%
High level cloud: 32%
Most Significant Cloud Type: low
58%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

SW
SW

 4 / 5 mph 57 / 56°F 62% 1018 mb
Low level cloud: 81%
Mid level cloud: 46%
High level cloud: 9%
Most Significant Cloud Type: low
97%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

SSW
SSW

 2 / 3 mph 59 / 59°F 59% 1018 mb
Low level cloud: 56%
Mid level cloud: 56%
High level cloud: 5%
Most Significant Cloud Type: low
76%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

W
W

 4 / 5 mph 64 / 61°F 54% 1016 mb
Low level cloud: 40%
Mid level cloud: 79%
High level cloud: 3%
Most Significant Cloud Type: low
68%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

NW
NW

 2 / 3 mph 53 / 50°F 75% 1016 mb
Low level cloud: 6%
Mid level cloud: 33%
High level cloud: 14%
Most Significant Cloud Type: medium
50%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

NE
NE

 4 / 8 mph 39 / 37°F 93% 1017 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 14%
Most Significant Cloud Type: medium
46%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Fri 24
May		04:00

E
E

 2 / 4 mph 43 / 43°F 96% 1017 mb
Low level cloud: 74%
Mid level cloud: 90%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
10:00

SSE
SSE

 2 / 5 mph 67 / 67°F 38% 1016 mb
Low level cloud: 0%
Mid level cloud: 32%
High level cloud: 90%
Most Significant Cloud Type: medium
35%
0.0 In
16:00

WNW
WNW

 7 / 14 mph 73 / 76°F 38% 1013 mb
Low level cloud: 0%
Mid level cloud: 15%
High level cloud: 18%
Most Significant Cloud Type: medium
16%
0.0 In
22:00

NNE
NNE

 4 / 9 mph 42 / 40°F 95% 1016 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: medium
9%
0.0 In
Sat 25
May		04:00

NNW
NNW

 1 / 3 mph 38 / 38°F 97% 1015 mb
Low level cloud: 92%
Mid level cloud: 5%
High level cloud: 90%
Most Significant Cloud Type: low
100%
0.0 In
10:00

WSW
WSW

 4 / 10 mph 68 / 68°F 46% 1014 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: medium
8%
0.0 In
16:00

NNW
NNW

 4 / 9 mph 67 / 67°F 53% 1014 mb
Low level cloud: 8%
Mid level cloud: 45%
High level cloud: 0%
Most Significant Cloud Type: medium
66%
0.0 In
22:00

NNW
NNW

 3 / 6 mph 41 / 40°F 96% 1016 mb
Low level cloud: 0%
Mid level cloud: 28%
High level cloud: 4%
Most Significant Cloud Type: medium
29%
0.0 In
Sun 26
May		04:00

NE
NE

 2 / 4 mph 40 / 39°F 97% 1018 mb
Low level cloud: 24%
Mid level cloud: 7%
High level cloud: 7%
Most Significant Cloud Type: low
100%
0.0 In
10:00

WSW
WSW

 6 / 12 mph 63 / 63°F 54% 1018 mb
Low level cloud: 32%
Mid level cloud: 19%
High level cloud: 13%
Most Significant Cloud Type: low
39%
0.0 In
16:00

WNW
WNW

 8 / 17 mph 73 / 76°F 40% 1017 mb
Low level cloud: 0%
Mid level cloud: 26%
High level cloud: 0%
Most Significant Cloud Type: medium
25%
0.0 In
22:00

NW
NW

 2 / 5 mph 43 / 42°F 88% 1020 mb
Low level cloud: 4%
Mid level cloud: 44%
High level cloud: 94%
Most Significant Cloud Type: medium
57%
0.0 In
Mon 27
May		04:00

NE
NE

 2 / 5 mph 42 / 42°F 96% 1021 mb
Low level cloud: 6%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: low
6%
0.0 In
10:00

SW
SW

 3 / 6 mph 56 / 56°F 80% 1020 mb
Low level cloud: 93%
Mid level cloud: 75%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
16:00

W
W

 6 / 12 mph 78 / 78°F 39% 1018 mb
Low level cloud: 0%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: medium
9%
0.0 In
22:00

SW
SW

 1 / 3 mph 49 / 49°F 100% 1021 mb
Low level cloud: 85%
Mid level cloud: 43%
High level cloud: 82%
Most Significant Cloud Type: low
100%
0.2 In
Tue 28
May		04:00

NE
NE

 3 / 6 mph 46 / 45°F 93% 1020 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
0.0 In
10:00

WNW
WNW

 6 / 12 mph 55 / 54°F 77% 1020 mb
Low level cloud: 49%
Mid level cloud: 15%
High level cloud: 6%
Most Significant Cloud Type: low
54%
0.1 In
16:00

WSW
WSW

 4 / 8 mph 84 / 82°F 28% 1013 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
22:00

NNW
NNW

 3 / 6 mph 35 / 33°F 87% 1021 mb
Low level cloud: 1%
Mid level cloud: 31%
High level cloud: 1%
Most Significant Cloud Type: medium
33%
0.1 In
Wed 29
May		04:00

SSW
SSW

 2 / 5 mph 54 / 55°F 100% 1013 mb
Low level cloud: 94%
Mid level cloud: 49%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
10:00

W
W

 4 / 8 mph 54 / 54°F 57% 1022 mb
Low level cloud: 89%
Mid level cloud: 45%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
16:00

W
W

 6 / 13 mph 61 / 61°F 95% 1015 mb
Low level cloud: 84%
Mid level cloud: 52%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.1 In
22:00

N
N

 4 / 9 mph 38 / 35°F 81% 1021 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 5%
Most Significant Cloud Type: high
4%
0.0 In
Thu 30
May		04:00

SE
SE

 4 / 7 mph 39 / 36°F 99% 1023 mb
Low level cloud: 99%
Mid level cloud: 31%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.1 In
10:00

WSW
WSW

 4 / 8 mph 66 / 66°F 42% 1020 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 4%
Most Significant Cloud Type: medium
2%
0.0 In
16:00

W
W

 6 / 12 mph 65 / 65°F 42% 1022 mb
Low level cloud: 0%
Mid level cloud: 25%
High level cloud: 100%
Most Significant Cloud Type: medium
28%
0.0 In
22:00

N
N

 4 / 8 mph 45 / 44°F 80% 1020 mb
Low level cloud: 0%
Mid level cloud: 11%
High level cloud: 85%
Most Significant Cloud Type: medium
14%
0.0 In
Fri 31
May		04:00

NE
NE

 3 / 7 mph 38 / 35°F 82% 1020 mb
Low level cloud: 0%
Mid level cloud: 11%
High level cloud: 31%
Most Significant Cloud Type: medium
12%
0.0 In
10:00

WSW
WSW

 4 / 10 mph 69 / 69°F 55% 1020 mb
Low level cloud: 53%
Mid level cloud: 49%
High level cloud: 21%
Most Significant Cloud Type: low
72%
0.0 In
16:00

WSW
WSW

 3 / 6 mph 70 / 70°F 47% 1014 mb
Low level cloud: 0%
Mid level cloud: 23%
High level cloud: 69%
Most Significant Cloud Type: medium
25%
0.0 In
22:00

NNW
NNW

 2 / 4 mph 54 / 55°F 92% 1018 mb
Low level cloud: 99%
Mid level cloud: 100%
High level cloud: 99%
Most Significant Cloud Type: low
100%
0.0 In
Sat 01
Jun		04:00

ESE
ESE

 3 / 7 mph 39 / 37°F 98% 1021 mb
Low level cloud: 20%
Mid level cloud: 26%
High level cloud: 0%
Most Significant Cloud Type: low
29%
0.0 In
10:00

SW
SW

 4 / 8 mph 55 / 55°F 99% 1014 mb
Low level cloud: 94%
Mid level cloud: 88%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.3 In
16:00

W
W

 6 / 13 mph 69 / 69°F 42% 1019 mb
Low level cloud: 0%
Mid level cloud: 29%
High level cloud: 16%
Most Significant Cloud Type: medium
29%
0.0 In
22:00

WNW
WNW

 3 / 6 mph 38 / 36°F 97% 1018 mb
Low level cloud: 37%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
38%
0.4 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