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Delphi 14 Day Long Range Forecast

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

Greece

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

Over the next 14 days the Delphi forecast suggests the average daytime maximum temperature will be around 20°C, with a high for the two weeks of 25°C expected on the morning of Wednesday 8th. The average minimum temperature will be 10°C, dipping to its lowest on the morning of Saturday 4th at 8°C. The next 14 days will have mixed overhead conditions with some days dry and some seeing a significant amount of rain. Current predictions suggest Friday 10th will have the most precipitation with an accumulation of around 23.0mm. On the whole winds are likely to be light.

DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Sat 04
May
17:00

N
N

5 / 6 mph 54 / 53°F 85% 1009 mb
Low level cloud: 50%
Mid level cloud: 76%
High level cloud: 100%
Most Significant Cloud Type: low
88%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
20:00

N
N

6 / 9 mph 53 / 49°F 85% 1011 mb
Low level cloud: 2%
Mid level cloud: 26%
High level cloud: 2%
Most Significant Cloud Type: medium
31%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
23:00

N
N

7 / 12 mph 51 / 48°F 80% 1013 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 12%
Most Significant Cloud Type: medium
45%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 05
May
02:00

N
N

6 / 10 mph 51 / 49°F 79% 1013 mb
Low level cloud: 5%
Mid level cloud: 50%
High level cloud: 7%
Most Significant Cloud Type: medium
63%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
05:00

N
N

7 / 14 mph 46 / 43°F 83% 1015 mb
Low level cloud: 0%
Mid level cloud: 19%
High level cloud: 0%
Most Significant Cloud Type: medium
18%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
08:00

NNE
NNE

5 / 6 mph 60 / 58°F 60% 1016 mb
Low level cloud: 0%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: medium
10%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
11:00

E
E

3 / 3 mph 68 / 66°F 40% 1017 mb
Low level cloud: 0%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: medium
10%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
14:00

SSE
SSE

4 / 5 mph 70 / 68°F 39% 1016 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: medium
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
17:00

SE
SE

4 / 4 mph 68 / 66°F 47% 1016 mb
Low level cloud: 0%
Mid level cloud: 23%
High level cloud: 1%
Most Significant Cloud Type: medium
22%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
20:00

SE
SE

1 / 2 mph 58 / 56°F 65% 1017 mb
Low level cloud: 0%
Mid level cloud: 16%
High level cloud: 0%
Most Significant Cloud Type: medium
15%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
23:00

NW
NW

2 / 4 mph 53 / 54°F 68% 1018 mb
Low level cloud: 0%
Mid level cloud: 17%
High level cloud: 0%
Most Significant Cloud Type: medium
16%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 06
May
02:00

NNW
NNW

3 / 7 mph 51 / 51°F 68% 1017 mb
Low level cloud: 0%
Mid level cloud: 18%
High level cloud: 0%
Most Significant Cloud Type: medium
17%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
05:00

N
N

3 / 6 mph 50 / 50°F 69% 1017 mb
Low level cloud: 0%
Mid level cloud: 18%
High level cloud: 0%
Most Significant Cloud Type: medium
17%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
08:00

S
S

2 / 2 mph 64 / 62°F 54% 1017 mb
Low level cloud: 0%
Mid level cloud: 17%
High level cloud: 0%
Most Significant Cloud Type: medium
17%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
11:00

S
S

6 / 6 mph 70 / 68°F 46% 1016 mb
Low level cloud: 0%
Mid level cloud: 22%
High level cloud: 0%
Most Significant Cloud Type: medium
22%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
14:00

SSW
SSW

4 / 5 mph 72 / 69°F 45% 1015 mb
Low level cloud: 0%
Mid level cloud: 17%
High level cloud: 0%
Most Significant Cloud Type: medium
16%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
17:00

SW
SW

2 / 3 mph 70 / 68°F 49% 1015 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 2%
Most Significant Cloud Type: medium
46%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
20:00

SSW
SSW

2 / 4 mph 60 / 60°F 65% 1016 mb
Low level cloud: 0%
Mid level cloud: 13%
High level cloud: 0%
Most Significant Cloud Type: medium
12%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
23:00

W
W

2 / 4 mph 56 / 57°F 72% 1016 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
Tue 07
May
02:00

NW
NW

4 / 9 mph 53 / 53°F 77% 1016 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
05:00

NW
NW

4 / 7 mph 52 / 51°F 74% 1015 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 98%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
08:00

SW
SW

3 / 3 mph 66 / 64°F 57% 1015 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 3%
Most Significant Cloud Type: medium
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
11:00

SSW
SSW

6 / 7 mph 74 / 75°F 40% 1014 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 1%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
14:00

SSW
SSW

7 / 8 mph 75 / 75°F 37% 1014 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 18%
Most Significant Cloud Type: medium
9%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
17:00

S
S

4 / 5 mph 74 / 75°F 43% 1013 mb
Low level cloud: 0%
Mid level cloud: 10%
High level cloud: 90%
Most Significant Cloud Type: medium
13%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
20:00

WSW
WSW

2 / 4 mph 62 / 60°F 64% 1013 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 15%
Most Significant Cloud Type: medium
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
23:00

WNW
WNW

4 / 7 mph 58 / 58°F 70% 1014 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 22%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 08
May
02:00

NW
NW

4 / 8 mph 55 / 55°F 64% 1013 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
05:00

NNW
NNW

4 / 10 mph 53 / 52°F 58% 1012 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 5%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
08:00

SW
SW

1 / 1 mph 69 / 66°F 46% 1012 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 33%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
11:00

SSE
SSE

5 / 5 mph 76 / 76°F 39% 1012 mb
Low level cloud: 0%
Mid level cloud: 20%
High level cloud: 8%
Most Significant Cloud Type: medium
20%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
14:00

S
S

6 / 6 mph 76 / 76°F 42% 1012 mb
Low level cloud: 0%
Mid level cloud: 30%
High level cloud: 32%
Most Significant Cloud Type: medium
30%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
17:00

E
E

1 / 1 mph 75 / 76°F 48% 1011 mb
Low level cloud: 0%
Mid level cloud: 10%
High level cloud: 75%
Most Significant Cloud Type: medium
13%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
20:00

SE
SE

1 / 2 mph 64 / 61°F 64% 1012 mb
Low level cloud: 0%
Mid level cloud: 13%
High level cloud: 76%
Most Significant Cloud Type: medium
15%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
23:00

WNW
WNW

0 / 1 mph 58 / 58°F 70% 1013 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 8%
Most Significant Cloud Type: medium
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 09
May
02:00

NNE
NNE

4 / 9 mph 56 / 55°F 71% 1012 mb
Low level cloud: 0%
Mid level cloud: 10%
High level cloud: 40%
Most Significant Cloud Type: medium
11%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
05:00

NE
NE

6 / 12 mph 54 / 53°F 82% 1011 mb
Low level cloud: 0%
Mid level cloud: 12%
High level cloud: 6%
Most Significant Cloud Type: medium
12%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
08:00

ENE
ENE

6 / 6 mph 66 / 63°F 64% 1012 mb
Low level cloud: 4%
Mid level cloud: 21%
High level cloud: 16%
Most Significant Cloud Type: medium
31%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
11:00

E
E

7 / 8 mph 71 / 68°F 54% 1012 mb
Low level cloud: 0%
Mid level cloud: 35%
High level cloud: 34%
Most Significant Cloud Type: medium
36%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
14:00

NE
NE

8 / 10 mph 66 / 64°F 63% 1012 mb
Low level cloud: 10%
Mid level cloud: 44%
High level cloud: 79%
Most Significant Cloud Type: medium
73%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
17:00

NE
NE

8 / 10 mph 63 / 62°F 74% 1012 mb
Low level cloud: 53%
Mid level cloud: 45%
High level cloud: 100%
Most Significant Cloud Type: low
80%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
20:00

ENE
ENE

6 / 8 mph 58 / 56°F 89% 1013 mb
Low level cloud: 83%
Mid level cloud: 48%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
23:00

NE
NE

6 / 8 mph 56 / 55°F 93% 1013 mb
Low level cloud: 46%
Mid level cloud: 96%
High level cloud: 58%
Most Significant Cloud Type: low
86%
Expect 0.3 In of precipitation over the past 3 hours.
0.3 In
Fri 10
May
02:00

NE
NE

9 / 14 mph 51 / 48°F 91% 1013 mb
Low level cloud: 36%
Mid level cloud: 50%
High level cloud: 97%
Most Significant Cloud Type: low
64%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
05:00

NE
NE

8 / 13 mph 50 / 47°F 90% 1012 mb
Low level cloud: 72%
Mid level cloud: 45%
High level cloud: 86%
Most Significant Cloud Type: low
98%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
08:00

NE
NE

7 / 11 mph 53 / 49°F 90% 1012 mb
Low level cloud: 42%
Mid level cloud: 48%
High level cloud: 100%
Most Significant Cloud Type: low
71%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
11:00

NE
NE

7 / 9 mph 55 / 53°F 89% 1012 mb
Low level cloud: 59%
Mid level cloud: 52%
High level cloud: 100%
Most Significant Cloud Type: low
89%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
14:00

NNE
NNE

8 / 9 mph 58 / 55°F 90% 1012 mb
Low level cloud: 43%
Mid level cloud: 46%
High level cloud: 100%
Most Significant Cloud Type: low
70%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
17:00

NNE
NNE

6 / 7 mph 57 / 55°F 82% 1011 mb
Low level cloud: 55%
Mid level cloud: 44%
High level cloud: 97%
Most Significant Cloud Type: low
82%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
20:00

NNE
NNE

6 / 7 mph 55 / 53°F 86% 1011 mb
Low level cloud: 12%
Mid level cloud: 50%
High level cloud: 98%
Most Significant Cloud Type: medium
86%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
23:00

N
N

5 / 6 mph 53 / 51°F 85% 1012 mb
Low level cloud: 47%
Mid level cloud: 81%
High level cloud: 64%
Most Significant Cloud Type: low
83%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Sat 11
May
02:00

NNE
NNE

5 / 10 mph 47 / 45°F 93% 1014 mb
Low level cloud: 50%
Mid level cloud: 46%
High level cloud: 4%
Most Significant Cloud Type: low
66%
0.0 In
08:00

NNE
NNE

4 / 9 mph 55 / 54°F 76% 1011 mb
Low level cloud: 5%
Mid level cloud: 32%
High level cloud: 91%
Most Significant Cloud Type: medium
49%
0.0 In
14:00

NE
NE

7 / 14 mph 58 / 57°F 49% 1019 mb
Low level cloud: 0%
Mid level cloud: 27%
High level cloud: 0%
Most Significant Cloud Type: medium
27%
0.0 In
20:00

NNE
NNE

1 / 2 mph 58 / 58°F 76% 1015 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: medium
8%
0.0 In
Sun 12
May
02:00

NNE
NNE

3 / 6 mph 54 / 54°F 75% 1012 mb
Low level cloud: 0%
Mid level cloud: 41%
High level cloud: 32%
Most Significant Cloud Type: medium
42%
0.0 In
08:00

SSW
SSW

3 / 5 mph 62 / 62°F 69% 1010 mb
Low level cloud: 11%
Mid level cloud: 45%
High level cloud: 94%
Most Significant Cloud Type: medium
79%
0.0 In
14:00

SSW
SSW

9 / 18 mph 69 / 69°F 47% 1010 mb
Low level cloud: 0%
Mid level cloud: 29%
High level cloud: 0%
Most Significant Cloud Type: medium
29%
0.0 In
20:00

W
W

5 / 11 mph 56 / 55°F 81% 1009 mb
Low level cloud: 0%
Mid level cloud: 32%
High level cloud: 8%
Most Significant Cloud Type: medium
32%
0.0 In
Mon 13
May
02:00

WNW
WNW

4 / 8 mph 52 / 51°F 86% 1011 mb
Low level cloud: 1%
Mid level cloud: 0%
High level cloud: 32%
Most Significant Cloud Type: high
31%
0.0 In
08:00

WSW
WSW

4 / 10 mph 61 / 61°F 65% 1008 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 10%
Most Significant Cloud Type: medium
3%
0.0 In
14:00

SW
SW

6 / 14 mph 71 / 71°F 42% 1008 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 33%
Most Significant Cloud Type: medium
8%
0.0 In
20:00

WNW
WNW

5 / 11 mph 57 / 57°F 79% 1009 mb
Low level cloud: 0%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: medium
12%
0.0 In
Tue 14
May
02:00

SW
SW

6 / 12 mph 56 / 55°F 86% 1005 mb
Low level cloud: 7%
Mid level cloud: 19%
High level cloud: 0%
Most Significant Cloud Type: low
13%
0.0 In
08:00

NE
NE

5 / 11 mph 56 / 55°F 71% 1013 mb
Low level cloud: 1%
Mid level cloud: 21%
High level cloud: 0%
Most Significant Cloud Type: medium
22%
0.0 In
14:00

SSE
SSE

3 / 7 mph 63 / 64°F 54% 1009 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: medium
46%
0.0 In
20:00

E
E

4 / 8 mph 57 / 58°F 70% 1015 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
0.0 In
Wed 15
May
02:00

NE
NE

2 / 5 mph 51 / 51°F 71% 1015 mb
Low level cloud: 10%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: medium
73%
0.0 In
08:00

S
S

3 / 7 mph 60 / 60°F 72% 1015 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 12%
Most Significant Cloud Type: high
12%
0.0 In
14:00

SSW
SSW

4 / 8 mph 65 / 65°F 50% 1014 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 2%
Most Significant Cloud Type: medium
45%
0.0 In
20:00

S
S

2 / 4 mph 60 / 60°F 60% 1014 mb
Low level cloud: 0%
Mid level cloud: 43%
High level cloud: 79%
Most Significant Cloud Type: medium
46%
0.0 In
Thu 16
May
02:00

NNW
NNW

2 / 5 mph 54 / 54°F 79% 1016 mb
Low level cloud: 0%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: medium
10%
0.0 In
08:00

E
E

4 / 8 mph 68 / 68°F 57% 1016 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 7%
Most Significant Cloud Type: medium
6%
0.0 In
14:00

S
S

7 / 14 mph 71 / 71°F 49% 1017 mb
Low level cloud: 0%
Mid level cloud: 18%
High level cloud: 0%
Most Significant Cloud Type: medium
18%
0.0 In
20:00

SE
SE

1 / 2 mph 68 / 68°F 67% 1016 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 99%
Most Significant Cloud Type: medium
7%
0.0 In
Fri 17
May
02:00

NW
NW

3 / 6 mph 57 / 58°F 70% 1018 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
0.0 In
08:00

S
S

3 / 6 mph 73 / 76°F 51% 1016 mb
Low level cloud: 0%
Mid level cloud: 11%
High level cloud: 32%
Most Significant Cloud Type: medium
11%
0.0 In
14:00

S
S

6 / 13 mph 75 / 76°F 35% 1016 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 2%
Most Significant Cloud Type: high
2%
0.0 In
20:00

SW
SW

3 / 6 mph 71 / 71°F 52% 1015 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
0.0 In
Sat 18
May
02:00

NW
NW

2 / 5 mph 61 / 61°F 56% 1015 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 6%
Most Significant Cloud Type: medium
7%
0.0 In
08:00

SW
SW

3 / 7 mph 79 / 79°F 42% 1012 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 10%
Most Significant Cloud Type: medium
2%
0.0 In
14:00

S
S

5 / 10 mph 80 / 79°F 32% 1014 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
0.0 In
20:00

W
W

5 / 11 mph 71 / 71°F 48% 1008 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
Sun 19
May
02:00

ENE
ENE

2 / 5 mph 68 / 68°F 43% 1012 mb
Low level cloud: 0%
Mid level cloud: 20%
High level cloud: 100%
Most Significant Cloud Type: medium
23%
0.0 In
08:00

SSW
SSW

1 / 2 mph 78 / 78°F 40% 1008 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
14:00

SSE
SSE

4 / 9 mph 77 / 78°F 44% 1010 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 100%
Most Significant Cloud Type: medium
48%
0.0 In
20:00

WSW
WSW

2 / 4 mph 71 / 71°F 62% 1008 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: medium
6%
0.0 In

Other Locations Near to Delphi

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