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Blue Springs Lake 14 Day Long Range Forecast

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

Missouri, United States Of America

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

The forecast for Blue Springs Lake in the coming two weeks is predicting the average daytime maximum temperature will be around 25°C, with a high for the two weeks of 30°C expected on the afternoon of Tuesday 21st. The mean minimum temperature will be 16°C, dipping to its lowest on the morning of Thursday 23rd at 8°C. Expect the next 14 days have some days seeing a little precipitation and some days with rain. The indicators are that Saturday 25th will have the most precipitation with an accumulation of around 16.0mm. On the whole winds are likely to be moderate.

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

SW
SW

3 / 6 mph 62 / 62°F 89% 1009 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 13%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SSW
SSW

5 / 11 mph 58 / 58°F 92% 1008 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SW
SW

3 / 7 mph 60 / 60°F 93% 1008 mb
Low level cloud: 4%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: low
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

WSW
WSW

0 / 0 mph 76 / 77°F 74% 1008 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
12:00

SSE
SSE

5 / 6 mph 81 / 79°F 59% 1007 mb
Low level cloud: 21%
Mid level cloud: 24%
High level cloud: 0%
Most Significant Cloud Type: low
29%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

S
S

6 / 8 mph 81 / 80°F 61% 1006 mb
Low level cloud: 31%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: low
34%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

S
S

4 / 5 mph 80 / 80°F 74% 1006 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: medium
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

S
S

6 / 13 mph 66 / 66°F 88% 1007 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: medium
9%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 18
May
15:00

SW
SW

8 / 9 mph 85 / 86°F 58% 1010 mb
Low level cloud: 20%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
22%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SSW
SSW

5 / 7 mph 85 / 86°F 73% 1010 mb
Low level cloud: 12%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: low
12%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

S
S

6 / 13 mph 73 / 77°F 86% 1012 mb
Low level cloud: 2%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: low
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 19
May
00:00

SW
SW

2 / 4 mph 69 / 69°F 92% 1013 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 71%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

S
S

4 / 8 mph 66 / 66°F 94% 1013 mb
Low level cloud: 2%
Mid level cloud: 6%
High level cloud: 8%
Most Significant Cloud Type: medium
11%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

S
S

6 / 12 mph 65 / 65°F 94% 1014 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 5%
Most Significant Cloud Type: medium
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SSE
SSE

8 / 10 mph 78 / 78°F 76% 1013 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 49%
Most Significant Cloud Type: high
48%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SSW
SSW

10 / 12 mph 84 / 84°F 58% 1013 mb
Low level cloud: 0%
Mid level cloud: 40%
High level cloud: 11%
Most Significant Cloud Type: medium
39%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

S
S

13 / 15 mph 84 / 86°F 59% 1009 mb
Low level cloud: 10%
Mid level cloud: 9%
High level cloud: 13%
Most Significant Cloud Type: low
14%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SSE
SSE

7 / 10 mph 83 / 84°F 75% 1008 mb
Low level cloud: 1%
Mid level cloud: 29%
High level cloud: 0%
Most Significant Cloud Type: medium
31%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SSE
SSE

8 / 16 mph 71 / 71°F 86% 1009 mb
Low level cloud: 0%
Mid level cloud: 32%
High level cloud: 47%
Most Significant Cloud Type: medium
34%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 20
May
00:00

SSW
SSW

17 / 26 mph 66 / 66°F 92% 1008 mb
Low level cloud: 17%
Mid level cloud: 9%
High level cloud: 80%
Most Significant Cloud Type: low
30%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
03:00

S
S

12 / 23 mph 66 / 66°F 92% 1005 mb
Low level cloud: 10%
Mid level cloud: 7%
High level cloud: 17%
Most Significant Cloud Type: low
14%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SSW
SSW

6 / 9 mph 69 / 66°F 93% 1008 mb
Low level cloud: 18%
Mid level cloud: 22%
High level cloud: 100%
Most Significant Cloud Type: low
37%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

S
S

5 / 7 mph 73 / 70°F 86% 1009 mb
Low level cloud: 17%
Mid level cloud: 44%
High level cloud: 100%
Most Significant Cloud Type: low
43%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
12:00

S
S

13 / 15 mph 81 / 83°F 67% 1008 mb
Low level cloud: 78%
Mid level cloud: 20%
High level cloud: 0%
Most Significant Cloud Type: low
85%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

S
S

14 / 18 mph 83 / 86°F 73% 1006 mb
Low level cloud: 35%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
50%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

S
S

11 / 19 mph 80 / 82°F 79% 1005 mb
Low level cloud: 1%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: medium
45%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

S
S

12 / 21 mph 76 / 79°F 72% 1005 mb
Low level cloud: 0%
Mid level cloud: 22%
High level cloud: 1%
Most Significant Cloud Type: medium
21%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 21
May
00:00

SSE
SSE

10 / 20 mph 71 / 71°F 86% 1004 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

S
S

15 / 25 mph 70 / 71°F 84% 1003 mb
Low level cloud: 2%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: low
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

S
S

18 / 29 mph 72 / 76°F 82% 1002 mb
Low level cloud: 1%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SSW
SSW

21 / 25 mph 79 / 82°F 77% 1001 mb
Low level cloud: 61%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: low
62%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SSW
SSW

21 / 24 mph 83 / 87°F 74% 1000 mb
Low level cloud: 38%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: low
40%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SSW
SSW

18 / 21 mph 86 / 92°F 70% 1000 mb
Low level cloud: 11%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: medium
77%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SW
SW

13 / 23 mph 80 / 83°F 81% 999 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 3%
Most Significant Cloud Type: medium
5%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
21:00

NNW
NNW

13 / 22 mph 66 / 66°F 89% 1004 mb
Low level cloud: 4%
Mid level cloud: 14%
High level cloud: 0%
Most Significant Cloud Type: medium
25%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
Wed 22
May
00:00

NE
NE

6 / 10 mph 59 / 59°F 92% 1005 mb
Low level cloud: 15%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: low
18%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

ENE
ENE

7 / 12 mph 56 / 55°F 94% 1004 mb
Low level cloud: 25%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
25%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

NE
NE

7 / 11 mph 58 / 55°F 94% 1004 mb
Low level cloud: 88%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: low
90%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

N
N

9 / 11 mph 58 / 56°F 96% 1005 mb
Low level cloud: 98%
Mid level cloud: 87%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

NNW
NNW

12 / 15 mph 59 / 56°F 91% 1008 mb
Low level cloud: 68%
Mid level cloud: 47%
High level cloud: 0%
Most Significant Cloud Type: low
84%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NW
NW

15 / 17 mph 66 / 65°F 70% 1009 mb
Low level cloud: 97%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: low
97%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NW
NW

13 / 17 mph 65 / 64°F 75% 1011 mb
Low level cloud: 55%
Mid level cloud: 28%
High level cloud: 0%
Most Significant Cloud Type: low
64%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

NW
NW

12 / 17 mph 54 / 50°F 85% 1015 mb
Low level cloud: 20%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: low
21%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 23
May
00:00

NW
NW

7 / 12 mph 50 / 48°F 92% 1017 mb
Low level cloud: 17%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
18%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

NNW
NNW

6 / 10 mph 49 / 47°F 94% 1016 mb
Low level cloud: 2%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: low
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

NW
NW

6 / 11 mph 49 / 46°F 91% 1019 mb
Low level cloud: 2%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: low
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

NNW
NNW

7 / 8 mph 62 / 60°F 66% 1020 mb
Low level cloud: 0%
Mid level cloud: 29%
High level cloud: 88%
Most Significant Cloud Type: medium
32%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

N
N

6 / 7 mph 67 / 64°F 61% 1019 mb
Low level cloud: 0%
Mid level cloud: 62%
High level cloud: 100%
Most Significant Cloud Type: medium
65%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NE
NE

4 / 4 mph 71 / 68°F 57% 1018 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

ESE
ESE

3 / 4 mph 71 / 68°F 68% 1017 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SSE
SSE

4 / 8 mph 60 / 60°F 85% 1019 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
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
00:00

SSE
SSE

11 / 24 mph 67 / 67°F 97% 1013 mb
Low level cloud: 67%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
67%
0.0 In
06:00

SSW
SSW

6 / 13 mph 68 / 68°F 94% 1005 mb
Low level cloud: 25%
Mid level cloud: 39%
High level cloud: 43%
Most Significant Cloud Type: low
44%
0.0 In
12:00

SSW
SSW

13 / 27 mph 80 / 85°F 72% 1001 mb
Low level cloud: 92%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
91%
0.0 In
18:00

NNW
NNW

7 / 14 mph 76 / 80°F 83% 1007 mb
Low level cloud: 4%
Mid level cloud: 13%
High level cloud: 0%
Most Significant Cloud Type: medium
23%
0.0 In
Sat 25
May
00:00

S
S

23 / 47 mph 76 / 80°F 77% 1001 mb
Low level cloud: 13%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
12%
0.0 In
06:00

SSW
SSW

10 / 20 mph 65 / 65°F 95% 1005 mb
Low level cloud: 68%
Mid level cloud: 6%
High level cloud: 1%
Most Significant Cloud Type: low
70%
0.0 In
12:00

SSW
SSW

20 / 43 mph 85 / 92°F 70% 1005 mb
Low level cloud: 81%
Mid level cloud: 2%
High level cloud: 16%
Most Significant Cloud Type: low
83%
0.0 In
18:00

SSW
SSW

17 / 36 mph 78 / 82°F 83% 1004 mb
Low level cloud: 1%
Mid level cloud: 46%
High level cloud: 58%
Most Significant Cloud Type: medium
51%
0.0 In
Sun 26
May
00:00

SE
SE

8 / 17 mph 67 / 67°F 97% 1007 mb
Low level cloud: 39%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: low
42%
0.8 In
06:00

SSW
SSW

13 / 28 mph 69 / 69°F 93% 1006 mb
Low level cloud: 41%
Mid level cloud: 70%
High level cloud: 14%
Most Significant Cloud Type: low
66%
0.5 In
12:00

SW
SW

15 / 31 mph 81 / 86°F 78% 1006 mb
Low level cloud: 73%
Mid level cloud: 46%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.3 In
18:00

NNE
NNE

7 / 15 mph 74 / 78°F 88% 1009 mb
Low level cloud: 15%
Mid level cloud: 32%
High level cloud: 0%
Most Significant Cloud Type: low
25%
0.2 In
Mon 27
May
00:00

NE
NE

3 / 6 mph 66 / 66°F 99% 1011 mb
Low level cloud: 99%
Mid level cloud: 22%
High level cloud: 2%
Most Significant Cloud Type: low
100%
1.0 In
06:00

ENE
ENE

7 / 15 mph 59 / 59°F 86% 1014 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 44%
Most Significant Cloud Type: medium
47%
0.0 In
12:00

NNE
NNE

12 / 25 mph 57 / 55°F 97% 1014 mb
Low level cloud: 99%
Mid level cloud: 80%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.6 In
18:00

ENE
ENE

9 / 19 mph 72 / 72°F 73% 1014 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
0.0 In
Tue 28
May
00:00

NE
NE

7 / 14 mph 61 / 61°F 93% 1017 mb
Low level cloud: 74%
Mid level cloud: 13%
High level cloud: 0%
Most Significant Cloud Type: low
78%
0.1 In
06:00

NE
NE

8 / 16 mph 60 / 60°F 89% 1015 mb
Low level cloud: 0%
Mid level cloud: 24%
High level cloud: 100%
Most Significant Cloud Type: medium
28%
0.0 In
12:00

NE
NE

10 / 21 mph 63 / 63°F 79% 1020 mb
Low level cloud: 63%
Mid level cloud: 52%
High level cloud: 0%
Most Significant Cloud Type: low
81%
0.0 In
18:00

ESE
ESE

9 / 19 mph 70 / 70°F 81% 1014 mb
Low level cloud: 12%
Mid level cloud: 46%
High level cloud: 3%
Most Significant Cloud Type: medium
80%
0.1 In
Wed 29
May
00:00

N
N

6 / 13 mph 54 / 52°F 98% 1023 mb
Low level cloud: 70%
Mid level cloud: 23%
High level cloud: 0%
Most Significant Cloud Type: low
77%
0.1 In
06:00

N
N

10 / 22 mph 59 / 59°F 97% 1018 mb
Low level cloud: 97%
Mid level cloud: 64%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.1 In
12:00

NE
NE

7 / 14 mph 70 / 69°F 62% 1023 mb
Low level cloud: 77%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
77%
0.0 In
18:00

N
N

6 / 14 mph 66 / 66°F 79% 1017 mb
Low level cloud: 53%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: low
56%
0.1 In
Thu 30
May
00:00

SE
SE

7 / 15 mph 56 / 55°F 84% 1022 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
0.0 In
06:00

WNW
WNW

6 / 13 mph 57 / 56°F 93% 1019 mb
Low level cloud: 3%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: medium
19%
0.0 In
12:00

SSE
SSE

13 / 26 mph 72 / 76°F 61% 1021 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: medium
8%
0.0 In
18:00

W
W

7 / 15 mph 72 / 76°F 68% 1015 mb
Low level cloud: 0%
Mid level cloud: 23%
High level cloud: 0%
Most Significant Cloud Type: medium
23%
0.0 In
Fri 31
May
00:00

SSE
SSE

11 / 22 mph 60 / 60°F 76% 1019 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: medium
9%
0.0 In
06:00

NNW
NNW

6 / 14 mph 59 / 58°F 86% 1018 mb
Low level cloud: 0%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: medium
12%
0.0 In
12:00

SSE
SSE

14 / 30 mph 67 / 67°F 81% 1020 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 100%
Most Significant Cloud Type: medium
50%
0.0 In
18:00

N
N

9 / 20 mph 66 / 66°F 64% 1020 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
Sat 01
Jun
00:00

SSE
SSE

15 / 31 mph 62 / 62°F 92% 1016 mb
Low level cloud: 0%
Mid level cloud: 32%
High level cloud: 98%
Most Significant Cloud Type: medium
35%
0.2 In
06:00

N
N

4 / 8 mph 55 / 54°F 89% 1025 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
12:00

S
S

19 / 40 mph 76 / 79°F 72% 1014 mb
Low level cloud: 51%
Mid level cloud: 12%
High level cloud: 4%
Most Significant Cloud Type: low
55%
0.4 In
18:00

NNE
NNE

5 / 11 mph 70 / 71°F 67% 1024 mb
Low level cloud: 8%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: low
10%
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