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www.weatherandclimate.info
The table shows the combined weather forecast in Philadelphia for three days ahead, automatically compiled according to several independent sources. The time is local. The atmospheric pressure in mm of mercury - at the level of the city (station).
The indicators of Tef (effective temperature), Tefs (effective sun temperature) and verbal characteristics of weather comfort are given (see explanations below).

Weather in Philadelphia

Date Time Weather type Air temperature, °C Atmospheric pressure Wind Precipitation, mm Tef, °C Tefs, °C Weather comfort
21.12
Sat
day
12 h
Partly cloudy 0 762 NW
6 m/s
0.0 -5 -5
21.12
Sat
day
15 h
Partly cloudy -0 765 NW
6 m/s
0.0 -5 -4
21.12
Sat
even
18 h
Mostly cloudy -0 765 NW
6 m/s
0.0 -5 -5
21.12
Sat
even
21 h
Partly cloudy -1 766 NW
6 m/s
0.0 -6 -6
22.12
Sun
night
00 h
Clear -3 768 NW
5 m/s
0.0 -8 -8
22.12
Sun
night
03 h
Light cloudy -4 769 NW
5 m/s
0.0 -10 -10
22.12
Sun
morn
06 h
Light cloudy -6 770 NW
4 m/s
0.0 -11 -11
22.12
Sun
morn
09 h
Light cloudy -7 771 NW
4 m/s
0.0 -12 -12
22.12
Sun
day
12 h
Light cloudy -7 773 NW
4 m/s
0.0 -13 -13
22.12
Sun
day
15 h
Clear -6 775 N
4 m/s
0.0 -11 -9
22.12
Sun
even
18 h
Clear -5 774 N
4 m/s
0.0 -9 -6
22.12
Sun
even
21 h
Clear -4 774 N
3 m/s
0.0 -8 -8
23.12
Mon
night
00 h
Clear -5 776 N
3 m/s
0.0 -9 -9
23.12
Mon
night
03 h
Clear -6 777 N
2 m/s
0.0 -9 -9
23.12
Mon
morn
06 h
Clear -7 777 N
2 m/s
0.0 -11 -11
23.12
Mon
morn
09 h
Clear -7 777 N
1 m/s
0.0 -8 -8
23.12
Mon
day
12 h
Clear -8 778 N
1 m/s
0.0 -9 -9
23.12
Mon
day
15 h
Clear -6 778 E
1 m/s
0.0 -7 -4
23.12
Mon
even
18 h
Light cloudy -3 777 S
1 m/s
0.0 -4 -0
23.12
Mon
even
21 h
Partly cloudy -2 776 S
2 m/s
0.0 -4 -4
24.12
Tue
night
00 h
Light cloudy -2 775 S
2 m/s
0.0 -4 -4
24.12
Tue
night
03 h
Light cloudy -2 774 S
2 m/s
0.0 -4 -4
24.12
Tue
morn
06 h
Partly cloudy -0 770 W
2 m/s
0.0 -2 -2
Sat, 21.12
Sat
Sat
Sat
Sat
Sun
Sun
Sun
Sun
12 h
15 h
18 h
21 h
00 h
03 h
06 h
09 h
Air temperature,°С
0
-0
-0
-1
-3
-4
-6
-7
Atmospheric pressure
762
765
765
766
768
769
770
771
Wind
NW
6 m/s
NW
6 m/s
NW
6 m/s
NW
6 m/s
NW
5 m/s
NW
5 m/s
NW
4 m/s
NW
4 m/s
Precipitation, mm
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
Tef,°C
-5
-5
-5
-6
-8
-10
-11
-12
Tefs,°C
-5
-4
-5
-6
-8
-10
-11
-12
Weather comfort
 
 
 
 
 
 
 
 
Sun
Sun
Sun
Sun
Mon
Mon
Mon
Mon
12 h
15 h
18 h
21 h
00 h
03 h
06 h
09 h
Air temperature,°С
-7
-6
-5
-4
-5
-6
-7
-7
Atmospheric pressure
773
775
774
774
776
777
777
777
Wind
NW
4 m/s
N
4 m/s
N
4 m/s
N
3 m/s
N
3 m/s
N
2 m/s
N
2 m/s
N
1 m/s
Precipitation, mm
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
Tef,°C
-13
-11
-9
-8
-9
-9
-11
-8
Tefs,°C
-13
-9
-6
-8
-9
-9
-11
-8
Weather comfort
 
 
 
 
 
 
 
 
Mon
Mon
Mon
Mon
Tue
Tue
Tue
12 h
15 h
18 h
21 h
00 h
03 h
06 h
Air temperature,°С
-8
-6
-3
-2
-2
-2
-0
Atmospheric pressure
778
778
777
776
775
774
770
Wind
N
1 m/s
E
1 m/s
S
1 m/s
S
2 m/s
S
2 m/s
S
2 m/s
W
2 m/s
Precipitation, mm
0.0
0.0
0.0
0.0
0.0
0.0
0.0
Tef,°C
-9
-7
-4
-4
-4
-4
-2
Tefs,°C
-9
-4
-0
-4
-4
-4
-2
Weather comfort
 
 
 
 
 
 
 
 
  • Sat, 21.12
  • Sun, 22.12
  • Mon, 23.12
Location of a geographical point Philadelphia (Pennsylvania, USA): latitude 39.8683 longitude -75.2311 height above sea level 3 m.
Navigation:
Notes:
Tef - Effective temperature - the temperature felt by a seasonally dressed person in the shade. The calculation takes into account the influence of humidity, wind speed and atmospheric pressure on the human heat perception.
Tefs - Effective sun temperature - the temperature that a person feels, adjusted for solar radiation. Depends on the amount of cloud cover and the height of the sun above the horizon. At night and in cloudy weather the correction is zero.
Weather comfort - a verbal characteristic that characterizes the favorability or unfavorability of forecast meteorological conditions for a seasonally dressed person. Both relative characteristics are used: warm, cool, cold, very cold, showing how much the expected Tef will be higher or lower than the norm, and absolute ones: the risk of sunstroke, the risk of overheating, hot, very hot, stuffy, very stuffy, comfort, the risk of colds, the risk of frostbite that occur when the Tef, Tefs, air temperature or a combination of certain criteria are reached.