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Sasebo 14 Day Long Range Forecast

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

Japan

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

Over the next 14 days the Sasebo forecast suggests the average daytime maximum temperature will be around 23°C, with a high for the two weeks of 28°C expected on the afternoon of Saturday 4th. The mean minimum temperature will be 13°C, dipping to its lowest on the morning of Friday 10th at 8°C. Expect the next 14 days have mixed overhead conditions with some days dry and some seeing a significant amount of rain. The indicators are that Monday 6th will have the most precipitation with an accumulation of around 29.0mm. On the whole winds are likely to be light.

DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Fri 03
May
15:00

NW
NW

6 / 7 mph 77 / 77°F 55% 1016 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
18:00

N
N

4 / 5 mph 75 / 77°F 70% 1017 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

NE
NE

3 / 6 mph 60 / 60°F 77% 1018 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 3%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 04
May
00:00

E
E

3 / 6 mph 55 / 55°F 77% 1018 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

ENE
ENE

3 / 6 mph 54 / 54°F 77% 1018 mb
Low level cloud: 0%
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
06:00

ESE
ESE

3 / 6 mph 56 / 55°F 84% 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
09:00

SE
SE

3 / 3 mph 75 / 77°F 61% 1018 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
12:00

SSW
SSW

4 / 4 mph 82 / 80°F 51% 1017 mb
Low level cloud: 33%
Mid level cloud: 14%
High level cloud: 0%
Most Significant Cloud Type: low
37%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

WSW
WSW

4 / 4 mph 81 / 80°F 58% 1017 mb
Low level cloud: 35%
Mid level cloud: 16%
High level cloud: 0%
Most Significant Cloud Type: low
41%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

WNW
WNW

2 / 3 mph 76 / 77°F 73% 1017 mb
Low level cloud: 21%
Mid level cloud: 23%
High level cloud: 0%
Most Significant Cloud Type: low
28%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

NE
NE

2 / 3 mph 62 / 62°F 83% 1018 mb
Low level cloud: 16%
Mid level cloud: 22%
High level cloud: 9%
Most Significant Cloud Type: low
25%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 05
May
00:00

SSE
SSE

3 / 6 mph 60 / 60°F 86% 1018 mb
Low level cloud: 1%
Mid level cloud: 9%
High level cloud: 15%
Most Significant Cloud Type: medium
12%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SE
SE

4 / 8 mph 60 / 60°F 89% 1017 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 32%
Most Significant Cloud Type: medium
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

ESE
ESE

4 / 9 mph 60 / 58°F 89% 1017 mb
Low level cloud: 0%
Mid level cloud: 11%
High level cloud: 32%
Most Significant Cloud Type: medium
12%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SE
SE

7 / 8 mph 73 / 76°F 61% 1017 mb
Low level cloud: 0%
Mid level cloud: 29%
High level cloud: 32%
Most Significant Cloud Type: medium
30%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SSE
SSE

13 / 15 mph 77 / 78°F 54% 1016 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 16%
Most Significant Cloud Type: medium
44%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

S
S

11 / 15 mph 76 / 77°F 59% 1015 mb
Low level cloud: 0%
Mid level cloud: 49%
High level cloud: 32%
Most Significant Cloud Type: medium
50%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

S
S

13 / 21 mph 70 / 69°F 67% 1015 mb
Low level cloud: 0%
Mid level cloud: 70%
High level cloud: 36%
Most Significant Cloud Type: medium
71%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SSE
SSE

17 / 25 mph 67 / 67°F 72% 1015 mb
Low level cloud: 5%
Mid level cloud: 54%
High level cloud: 41%
Most Significant Cloud Type: medium
70%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 06
May
00:00

SSE
SSE

18 / 27 mph 66 / 66°F 74% 1012 mb
Low level cloud: 38%
Mid level cloud: 47%
High level cloud: 100%
Most Significant Cloud Type: low
66%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SSE
SSE

18 / 28 mph 66 / 66°F 80% 1010 mb
Low level cloud: 86%
Mid level cloud: 78%
High level cloud: 94%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SSE
SSE

15 / 22 mph 64 / 64°F 95% 1009 mb
Low level cloud: 97%
Mid level cloud: 93%
High level cloud: 99%
Most Significant Cloud Type: low
100%
Expect 0.3 In of precipitation over the past 3 hours.
0.3 In
09:00

S
S

15 / 23 mph 66 / 66°F 95% 1010 mb
Low level cloud: 99%
Mid level cloud: 79%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.7 In of precipitation over the past 3 hours.
0.7 In
12:00

WSW
WSW

7 / 8 mph 69 / 69°F 93% 1011 mb
Low level cloud: 99%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
15:00

WSW
WSW

6 / 8 mph 67 / 67°F 93% 1011 mb
Low level cloud: 98%
Mid level cloud: 44%
High level cloud: 45%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

W
W

5 / 6 mph 66 / 64°F 94% 1012 mb
Low level cloud: 84%
Mid level cloud: 4%
High level cloud: 4%
Most Significant Cloud Type: low
85%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

WSW
WSW

2 / 4 mph 62 / 62°F 93% 1013 mb
Low level cloud: 1%
Mid level cloud: 3%
High level cloud: 5%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 07
May
00:00

SW
SW

4 / 7 mph 58 / 58°F 92% 1013 mb
Low level cloud: 8%
Mid level cloud: 4%
High level cloud: 57%
Most Significant Cloud Type: low
15%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

S
S

4 / 8 mph 58 / 58°F 95% 1013 mb
Low level cloud: 31%
Mid level cloud: 6%
High level cloud: 53%
Most Significant Cloud Type: low
39%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

S
S

5 / 9 mph 60 / 58°F 96% 1013 mb
Low level cloud: 37%
Mid level cloud: 11%
High level cloud: 32%
Most Significant Cloud Type: low
44%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SW
SW

11 / 12 mph 68 / 68°F 79% 1013 mb
Low level cloud: 87%
Mid level cloud: 49%
High level cloud: 32%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SW
SW

13 / 16 mph 67 / 67°F 85% 1012 mb
Low level cloud: 91%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

W
W

12 / 14 mph 67 / 66°F 78% 1012 mb
Low level cloud: 51%
Mid level cloud: 1%
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

WNW
WNW

11 / 12 mph 64 / 62°F 78% 1012 mb
Low level cloud: 38%
Mid level cloud: 0%
High level cloud: 1%
Most Significant Cloud Type: low
38%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

WNW
WNW

7 / 12 mph 57 / 56°F 85% 1013 mb
Low level cloud: 71%
Mid level cloud: 2%
High level cloud: 6%
Most Significant Cloud Type: low
72%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 08
May
00:00

WNW
WNW

3 / 6 mph 56 / 57°F 87% 1013 mb
Low level cloud: 56%
Mid level cloud: 11%
High level cloud: 7%
Most Significant Cloud Type: low
60%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

NW
NW

1 / 1 mph 56 / 56°F 89% 1011 mb
Low level cloud: 51%
Mid level cloud: 21%
High level cloud: 33%
Most Significant Cloud Type: low
62%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

NNE
NNE

3 / 4 mph 57 / 56°F 92% 1011 mb
Low level cloud: 58%
Mid level cloud: 16%
High level cloud: 99%
Most Significant Cloud Type: low
75%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

NNE
NNE

5 / 6 mph 63 / 62°F 80% 1012 mb
Low level cloud: 61%
Mid level cloud: 46%
High level cloud: 69%
Most Significant Cloud Type: low
85%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

NNE
NNE

8 / 9 mph 63 / 63°F 73% 1011 mb
Low level cloud: 74%
Mid level cloud: 45%
High level cloud: 97%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NE
NE

10 / 12 mph 63 / 63°F 74% 1010 mb
Low level cloud: 70%
Mid level cloud: 45%
High level cloud: 100%
Most Significant Cloud Type: low
98%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NNE
NNE

10 / 12 mph 61 / 60°F 76% 1010 mb
Low level cloud: 25%
Mid level cloud: 22%
High level cloud: 1%
Most Significant Cloud Type: low
32%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

NNE
NNE

9 / 15 mph 53 / 50°F 84% 1011 mb
Low level cloud: 4%
Mid level cloud: 15%
High level cloud: 0%
Most Significant Cloud Type: medium
25%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 09
May
00:00

NNE
NNE

7 / 13 mph 52 / 49°F 87% 1011 mb
Low level cloud: 10%
Mid level cloud: 20%
High level cloud: 0%
Most Significant Cloud Type: low
17%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

NNE
NNE

7 / 12 mph 52 / 49°F 87% 1009 mb
Low level cloud: 7%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: medium
65%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

NNE
NNE

8 / 13 mph 54 / 49°F 87% 1011 mb
Low level cloud: 38%
Mid level cloud: 29%
High level cloud: 0%
Most Significant Cloud Type: low
47%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

N
N

12 / 14 mph 61 / 59°F 70% 1012 mb
Low level cloud: 40%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
42%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

N
N

14 / 16 mph 63 / 62°F 66% 1012 mb
Low level cloud: 60%
Mid level cloud: 11%
High level cloud: 9%
Most Significant Cloud Type: low
64%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

N
N

13 / 15 mph 62 / 61°F 61% 1012 mb
Low level cloud: 79%
Mid level cloud: 16%
High level cloud: 0%
Most Significant Cloud Type: low
84%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

N
N

8 / 9 mph 63 / 61°F 61% 1013 mb
Low level cloud: 0%
Mid level cloud: 2%
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

NW
NW

1 / 2 mph 58 / 58°F 73% 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
DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Fri 10
May
03:00

NNE
NNE

12 / 24 mph 56 / 53°F 85% 1011 mb
Low level cloud: 48%
Mid level cloud: 28%
High level cloud: 57%
Most Significant Cloud Type: low
64%
0.0 In
09:00

N
N

11 / 21 mph 63 / 63°F 80% 1013 mb
Low level cloud: 89%
Mid level cloud: 15%
High level cloud: 0%
Most Significant Cloud Type: low
94%
0.0 In
15:00

N
N

12 / 23 mph 69 / 69°F 55% 1012 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
0.0 In
21:00

WSW
WSW

1 / 1 mph 60 / 60°F 84% 1017 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
Sat 11
May
03:00

S
S

2 / 3 mph 58 / 58°F 91% 1015 mb
Low level cloud: 6%
Mid level cloud: 0%
High level cloud: 12%
Most Significant Cloud Type: low
7%
0.0 In
09:00

SSW
SSW

6 / 9 mph 70 / 70°F 52% 1019 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 62%
Most Significant Cloud Type: high
62%
0.0 In
15:00

WSW
WSW

7 / 12 mph 75 / 77°F 54% 1016 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 33%
Most Significant Cloud Type: high
33%
0.0 In
21:00

SSE
SSE

4 / 6 mph 69 / 69°F 82% 1016 mb
Low level cloud: 0%
Mid level cloud: 19%
High level cloud: 100%
Most Significant Cloud Type: medium
23%
0.0 In
Sun 12
May
03:00

SSE
SSE

4 / 8 mph 60 / 60°F 76% 1015 mb
Low level cloud: 0%
Mid level cloud: 43%
High level cloud: 100%
Most Significant Cloud Type: medium
47%
0.0 In
09:00

SSE
SSE

4 / 7 mph 74 / 77°F 71% 1017 mb
Low level cloud: 0%
Mid level cloud: 10%
High level cloud: 5%
Most Significant Cloud Type: medium
10%
0.0 In
15:00

S
S

10 / 17 mph 70 / 70°F 70% 1013 mb
Low level cloud: 19%
Mid level cloud: 44%
High level cloud: 15%
Most Significant Cloud Type: low
36%
0.0 In
21:00

S
S

3 / 5 mph 62 / 62°F 92% 1016 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 55%
Most Significant Cloud Type: high
54%
0.0 In
Mon 13
May
03:00

S
S

7 / 12 mph 66 / 65°F 95% 1012 mb
Low level cloud: 95%
Mid level cloud: 52%
High level cloud: 3%
Most Significant Cloud Type: low
100%
0.0 In
09:00

N
N

1 / 1 mph 78 / 81°F 66% 1015 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 15%
Most Significant Cloud Type: high
15%
0.0 In
15:00

NW
NW

7 / 13 mph 76 / 77°F 39% 1014 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.1 In
21:00

NW
NW

2 / 3 mph 65 / 65°F 82% 1014 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: medium
1%
0.0 In
Tue 14
May
03:00

NE
NE

4 / 8 mph 58 / 58°F 42% 1015 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 1%
Most Significant Cloud Type: high
0%
0.0 In
09:00

WNW
WNW

4 / 6 mph 77 / 79°F 64% 1016 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
0.0 In
15:00

SSE
SSE

1 / 2 mph 83 / 82°F 37% 1014 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
21:00

N
N

3 / 6 mph 67 / 67°F 90% 1015 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: medium
9%
0.0 In
Wed 15
May
03:00

SSE
SSE

3 / 6 mph 64 / 64°F 97% 1014 mb
Low level cloud: 59%
Mid level cloud: 15%
High level cloud: 88%
Most Significant Cloud Type: low
100%
0.0 In
09:00

SSE
SSE

1 / 1 mph 81 / 84°F 62% 1014 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 32%
Most Significant Cloud Type: medium
6%
0.0 In
15:00

W
W

7 / 14 mph 77 / 80°F 62% 1012 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
0.0 In
21:00

SSE
SSE

3 / 5 mph 68 / 68°F 83% 1012 mb
Low level cloud: 3%
Mid level cloud: 11%
High level cloud: 34%
Most Significant Cloud Type: medium
21%
0.0 In
Thu 16
May
03:00

SW
SW

1 / 2 mph 64 / 64°F 95% 1013 mb
Low level cloud: 21%
Mid level cloud: 0%
High level cloud: 10%
Most Significant Cloud Type: low
21%
0.0 In
09:00

SE
SE

6 / 13 mph 68 / 68°F 94% 1009 mb
Low level cloud: 36%
Mid level cloud: 43%
High level cloud: 100%
Most Significant Cloud Type: low
62%
0.3 In
15:00

WNW
WNW

5 / 9 mph 72 / 75°F 40% 1012 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: high
99%
0.0 In
21:00

SE
SE

4 / 8 mph 70 / 70°F 97% 1006 mb
Low level cloud: 14%
Mid level cloud: 16%
High level cloud: 0%
Most Significant Cloud Type: low
19%
0.7 In
Fri 17
May
03:00

NNW
NNW

1 / 2 mph 58 / 58°F 76% 1012 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: high
99%
0.0 In
09:00

W
W

3 / 7 mph 68 / 69°F 84% 1009 mb
Low level cloud: 87%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
88%
0.1 In
15:00

N
N

11 / 20 mph 73 / 75°F 35% 1011 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 60%
Most Significant Cloud Type: high
60%
0.0 In
21:00

NNE
NNE

5 / 10 mph 62 / 62°F 91% 1010 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
Sat 18
May
03:00

NE
NE

5 / 10 mph 54 / 53°F 56% 1010 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
09:00

NNE
NNE

7 / 16 mph 74 / 77°F 64% 1011 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
15:00

N
N

8 / 15 mph 79 / 79°F 36% 1008 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
21:00

NNE
NNE

6 / 13 mph 59 / 59°F 88% 1009 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In

Other Locations Near to Sasebo

Cities and Towns: Imari, Japan

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