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Duncanville 14 Day Long Range Forecast

14 Day weather providing an extended long range forecast outlook for Duncanville

Texas, United States Of America

Long range weather outlook for Duncanville includes 14 day forecast summary:

Reviewing the forecast for Duncanville Over the next 14 days and the average daytime maximum temperature will be around 30°C, with a high for the two weeks of 33°C expected on the afternoon of Sunday 26th. The average minimum temperature will be 22°C, dipping to its lowest on the morning of Friday 24th at 19°C. Expect the following 14 days ahead to have some days seeing a little precipitation and some days with rain. It looks like Wednesday 22nd will have the most precipitation with an accumulation of around 27.0mm. On the whole winds are likely to be moderate. The strongest wind will be felt on the evening of Monday 27th, coming from a southerly direction, and reaching around 29mph.

DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Sat 18
May
15:00

SSE
SSE

7 / 8 mph 90 / 91°F 45% 1009 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
18:00

SE
SE

8 / 9 mph 90 / 94°F 56% 1009 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SE
SE

7 / 9 mph 85 / 94°F 73% 1011 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
Sun 19
May
00:00

SE
SE

8 / 11 mph 78 / 82°F 80% 1012 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
03:00

SSE
SSE

6 / 9 mph 75 / 79°F 87% 1012 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
06:00

SSE
SSE

6 / 9 mph 72 / 76°F 88% 1014 mb
Low level cloud: 1%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
1%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SSE
SSE

10 / 13 mph 80 / 82°F 68% 1014 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
12:00

SSE
SSE

12 / 14 mph 87 / 90°F 56% 1013 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
15:00

S
S

13 / 15 mph 89 / 92°F 49% 1011 mb
Low level cloud: 8%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SSE
SSE

12 / 14 mph 89 / 96°F 61% 1010 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
21:00

S
S

10 / 11 mph 84 / 93°F 76% 1010 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 20
May
00:00

SSE
SSE

13 / 20 mph 78 / 82°F 75% 1009 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
03:00

S
S

11 / 13 mph 76 / 80°F 82% 1009 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
06:00

S
S

9 / 13 mph 72 / 76°F 91% 1010 mb
Low level cloud: 34%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
33%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

S
S

16 / 20 mph 80 / 82°F 70% 1011 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
12:00

S
S

17 / 19 mph 87 / 89°F 52% 1010 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
15:00

S
S

17 / 20 mph 88 / 91°F 49% 1009 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
18:00

S
S

13 / 15 mph 87 / 92°F 62% 1008 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
21:00

SSE
SSE

10 / 11 mph 84 / 93°F 79% 1008 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
Tue 21
May
00:00

SSE
SSE

16 / 21 mph 79 / 83°F 79% 1007 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 1%
Most Significant Cloud Type: high
1%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

S
S

17 / 26 mph 74 / 78°F 88% 1007 mb
Low level cloud: 51%
Mid level cloud: 0%
High level cloud: 36%
Most Significant Cloud Type: low
55%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

S
S

18 / 26 mph 74 / 78°F 89% 1007 mb
Low level cloud: 91%
Mid level cloud: 0%
High level cloud: 1%
Most Significant Cloud Type: low
90%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SSW
SSW

15 / 22 mph 77 / 80°F 82% 1009 mb
Low level cloud: 89%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: low
89%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

S
S

19 / 23 mph 84 / 87°F 67% 1008 mb
Low level cloud: 23%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: low
24%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SSW
SSW

19 / 22 mph 88 / 94°F 57% 1006 mb
Low level cloud: 63%
Mid level cloud: 45%
High level cloud: 0%
Most Significant Cloud Type: low
78%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

S
S

17 / 22 mph 86 / 92°F 71% 1005 mb
Low level cloud: 1%
Mid level cloud: 17%
High level cloud: 22%
Most Significant Cloud Type: medium
19%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SSE
SSE

17 / 26 mph 83 / 89°F 73% 1005 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 100%
Most Significant Cloud Type: medium
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 22
May
00:00

S
S

18 / 26 mph 79 / 83°F 76% 1007 mb
Low level cloud: 3%
Mid level cloud: 18%
High level cloud: 100%
Most Significant Cloud Type: medium
29%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

S
S

15 / 23 mph 75 / 79°F 88% 1007 mb
Low level cloud: 34%
Mid level cloud: 5%
High level cloud: 90%
Most Significant Cloud Type: low
46%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SSW
SSW

14 / 21 mph 74 / 78°F 92% 1009 mb
Low level cloud: 75%
Mid level cloud: 6%
High level cloud: 37%
Most Significant Cloud Type: low
81%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SW
SW

11 / 15 mph 79 / 82°F 79% 1010 mb
Low level cloud: 76%
Mid level cloud: 22%
High level cloud: 99%
Most Significant Cloud Type: low
95%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SW
SW

9 / 11 mph 86 / 92°F 60% 1010 mb
Low level cloud: 95%
Mid level cloud: 46%
High level cloud: 95%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NNW
NNW

13 / 25 mph 73 / 76°F 92% 1009 mb
Low level cloud: 62%
Mid level cloud: 43%
High level cloud: 78%
Most Significant Cloud Type: low
86%
Expect 0.5 In of precipitation over the past 3 hours.
0.5 In
18:00

NNE
NNE

6 / 12 mph 74 / 76°F 93% 1010 mb
Low level cloud: 62%
Mid level cloud: 44%
High level cloud: 3%
Most Significant Cloud Type: low
77%
Expect 0.3 In of precipitation over the past 3 hours.
0.3 In
21:00

NE
NE

7 / 12 mph 71 / 71°F 96% 1011 mb
Low level cloud: 72%
Mid level cloud: 28%
High level cloud: 100%
Most Significant Cloud Type: low
93%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
Thu 23
May
00:00

S
S

5 / 11 mph 70 / 70°F 96% 1012 mb
Low level cloud: 79%
Mid level cloud: 7%
High level cloud: 97%
Most Significant Cloud Type: low
92%
Expect 0.4 In of precipitation over the past 3 hours.
0.4 In
03:00

ENE
ENE

3 / 5 mph 68 / 68°F 97% 1011 mb
Low level cloud: 77%
Mid level cloud: 6%
High level cloud: 100%
Most Significant Cloud Type: low
91%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

ESE
ESE

7 / 14 mph 66 / 66°F 97% 1012 mb
Low level cloud: 78%
Mid level cloud: 43%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SE
SE

10 / 16 mph 70 / 69°F 95% 1012 mb
Low level cloud: 56%
Mid level cloud: 49%
High level cloud: 100%
Most Significant Cloud Type: low
84%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
12:00

ENE
ENE

7 / 10 mph 75 / 77°F 91% 1014 mb
Low level cloud: 0%
Mid level cloud: 29%
High level cloud: 48%
Most Significant Cloud Type: medium
30%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
15:00

ESE
ESE

6 / 7 mph 78 / 78°F 84% 1012 mb
Low level cloud: 0%
Mid level cloud: 49%
High level cloud: 10%
Most Significant Cloud Type: medium
48%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SE
SE

8 / 13 mph 76 / 78°F 92% 1011 mb
Low level cloud: 27%
Mid level cloud: 46%
High level cloud: 2%
Most Significant Cloud Type: low
43%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
21:00

ESE
ESE

6 / 11 mph 71 / 71°F 95% 1012 mb
Low level cloud: 39%
Mid level cloud: 37%
High level cloud: 0%
Most Significant Cloud Type: low
51%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
Fri 24
May
00:00

SE
SE

8 / 11 mph 67 / 67°F 95% 1010 mb
Low level cloud: 43%
Mid level cloud: 23%
High level cloud: 0%
Most Significant Cloud Type: low
50%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SE
SE

9 / 16 mph 66 / 66°F 97% 1009 mb
Low level cloud: 75%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: low
75%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SE
SE

7 / 13 mph 67 / 67°F 99% 1010 mb
Low level cloud: 97%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SSE
SSE

10 / 15 mph 72 / 76°F 94% 1010 mb
Low level cloud: 90%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: low
91%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

S
S

13 / 18 mph 79 / 82°F 81% 1009 mb
Low level cloud: 85%
Mid level cloud: 3%
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

13 / 20 mph 81 / 85°F 81% 1007 mb
Low level cloud: 78%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: low
78%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

S
S

21 / 33 mph 78 / 81°F 88% 1006 mb
Low level cloud: 15%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: low
18%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
21:00

S
S

12 / 18 mph 73 / 77°F 88% 1007 mb
Low level cloud: 2%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: medium
13%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Sat 25
May
00:00

S
S

15 / 31 mph 74 / 78°F 87% 1007 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
0.0 In
06:00

S
S

13 / 28 mph 72 / 76°F 93% 1008 mb
Low level cloud: 86%
Mid level cloud: 4%
High level cloud: 18%
Most Significant Cloud Type: low
89%
0.0 In
12:00

S
S

15 / 32 mph 84 / 87°F 59% 1011 mb
Low level cloud: 3%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: low
3%
0.0 In
18:00

SSE
SSE

15 / 32 mph 84 / 91°F 69% 1008 mb
Low level cloud: 0%
Mid level cloud: 43%
High level cloud: 7%
Most Significant Cloud Type: medium
43%
0.0 In
Sun 26
May
00:00

S
S

15 / 32 mph 77 / 81°F 78% 1010 mb
Low level cloud: 3%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: medium
18%
0.0 In
06:00

S
S

11 / 22 mph 73 / 77°F 90% 1010 mb
Low level cloud: 20%
Mid level cloud: 4%
High level cloud: 91%
Most Significant Cloud Type: low
32%
0.0 In
12:00

SSW
SSW

21 / 43 mph 85 / 91°F 67% 1006 mb
Low level cloud: 90%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
92%
0.0 In
18:00

SSE
SSE

13 / 27 mph 91 / 110°F 72% 1006 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
0.0 In
Mon 27
May
00:00

S
S

17 / 36 mph 77 / 82°F 83% 1004 mb
Low level cloud: 2%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
2%
0.0 In
06:00

S
S

12 / 25 mph 75 / 79°F 90% 1009 mb
Low level cloud: 25%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: low
25%
0.0 In
12:00

WNW
WNW

9 / 18 mph 92 / 95°F 41% 1008 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
18:00

SSE
SSE

11 / 24 mph 89 / 104°F 70% 1007 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 44%
Most Significant Cloud Type: medium
8%
0.0 In
Tue 28
May
00:00

NNE
NNE

13 / 26 mph 73 / 77°F 67% 1017 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
06:00

NNW
NNW

9 / 20 mph 73 / 77°F 87% 1012 mb
Low level cloud: 18%
Mid level cloud: 0%
High level cloud: 22%
Most Significant Cloud Type: low
21%
0.1 In
12:00

N
N

15 / 32 mph 75 / 76°F 38% 1023 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
0.0 In
18:00

ENE
ENE

6 / 12 mph 82 / 86°F 69% 1014 mb
Low level cloud: 65%
Mid level cloud: 35%
High level cloud: 31%
Most Significant Cloud Type: low
80%
0.1 In
Wed 29
May
00:00

ENE
ENE

6 / 13 mph 68 / 68°F 62% 1023 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
06:00

NNE
NNE

6 / 12 mph 75 / 79°F 91% 1015 mb
Low level cloud: 10%
Mid level cloud: 12%
High level cloud: 10%
Most Significant Cloud Type: low
15%
0.0 In
12:00

NE
NE

10 / 21 mph 76 / 76°F 36% 1022 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
18:00

S
S

7 / 15 mph 89 / 99°F 66% 1013 mb
Low level cloud: 0%
Mid level cloud: 14%
High level cloud: 92%
Most Significant Cloud Type: medium
17%
0.1 In
Thu 30
May
00:00

ENE
ENE

2 / 4 mph 79 / 81°F 59% 1021 mb
Low level cloud: 0%
Mid level cloud: 12%
High level cloud: 33%
Most Significant Cloud Type: medium
12%
0.0 In
06:00

SW
SW

10 / 22 mph 69 / 69°F 92% 1015 mb
Low level cloud: 0%
Mid level cloud: 28%
High level cloud: 71%
Most Significant Cloud Type: medium
31%
1.6 In
12:00

ESE
ESE

6 / 13 mph 75 / 77°F 50% 1023 mb
Low level cloud: 0%
Mid level cloud: 33%
High level cloud: 5%
Most Significant Cloud Type: medium
32%
0.0 In
18:00

SE
SE

6 / 12 mph 88 / 99°F 70% 1013 mb
Low level cloud: 26%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: low
28%
0.0 In
Fri 31
May
00:00

ESE
ESE

5 / 11 mph 76 / 79°F 73% 1022 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: medium
8%
0.0 In
06:00

S
S

6 / 13 mph 74 / 79°F 94% 1015 mb
Low level cloud: 43%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: low
45%
0.2 In
12:00

SSE
SSE

8 / 17 mph 80 / 81°F 46% 1024 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 2%
Most Significant Cloud Type: medium
4%
0.0 In
18:00

SE
SE

4 / 8 mph 88 / 100°F 71% 1013 mb
Low level cloud: 73%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: low
75%
0.0 In
Sat 01
Jun
00:00

SE
SE

6 / 13 mph 76 / 80°F 73% 1021 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: medium
8%
0.0 In
06:00

N
N

9 / 20 mph 72 / 72°F 94% 1017 mb
Low level cloud: 87%
Mid level cloud: 46%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.4 In
12:00

SSE
SSE

15 / 30 mph 78 / 79°F 47% 1021 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 17%
Most Significant Cloud Type: medium
6%
0.0 In
18:00

NE
NE

9 / 19 mph 79 / 83°F 76% 1014 mb
Low level cloud: 34%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: low
38%
0.1 In
Sun 02
Jun
00:00

SE
SE

9 / 19 mph 73 / 77°F 75% 1018 mb
Low level cloud: 0%
Mid level cloud: 15%
High level cloud: 0%
Most Significant Cloud Type: medium
14%
0.0 In
06:00

ENE
ENE

1 / 2 mph 69 / 69°F 97% 1016 mb
Low level cloud: 96%
Mid level cloud: 44%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.6 In
12:00

S
S

16 / 33 mph 81 / 82°F 54% 1017 mb
Low level cloud: 84%
Mid level cloud: 35%
High level cloud: 22%
Most Significant Cloud Type: low
99%
0.0 In
18:00

E
E

6 / 13 mph 75 / 79°F 81% 1014 mb
Low level cloud: 73%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: low
75%
0.1 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