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www.weatherandclimate.info
The table shows the combined weather forecast in Allentown 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 Allentown

Date Time Weather type Air temperature, °C Atmospheric pressure Wind Precipitation, mm Tef, °C Tefs, °C Weather comfort
09.12
Tue
day
12 h
Clear -10 757 calm 0.0 -9 -9
09.12
Tue
day
15 h
Clear -6 757 S
1 m/s
0.0 -7 -4
09.12
Tue
even
18 h
Mostly cloudy -2 754 S
3 m/s
0.0 -5 -4
09.12
Tue
even
21 h
Mostly cloudy -2 752 S
4 m/s
0.0 -6 -6
10.12
Wen
night
00 h
Partly cloudy -3 751 S
4 m/s
0.0 -7 -7
10.12
Wen
night
03 h
Light cloudy -3 749 S
4 m/s
0.0 -7 -7
10.12
Wen
morn
06 h
Mostly cloudy -2 748 SW
3 m/s
0.0 -6 -6
10.12
Wen
morn
09 h
Mostly cloudy -2 746 SW
3 m/s
0.0 -6 -6
10.12
Wen
day
12 h
Cloudy -2 745 S
3 m/s
0.0 -5 -5
10.12
Wen
day
15 h
Cloudy 0 742 S
3 m/s
0.1 -3 -3
10.12
Wen
even
18 h
Snow with rain +2 739 S
5 m/s
1.3 -2 -2
10.12
Wen
even
21 h
Snow +1 738 S
5 m/s
2.4 -3 -3
11.12
Thu
night
00 h
Snow with rain +2 738 SW
4 m/s
0.4 -2 -2
11.12
Thu
night
03 h
Partly cloudy +2 737 SW
5 m/s
0.1 -2 -2
11.12
Thu
morn
06 h
Mostly cloudy +1 737 W
5 m/s
0.0 -3 -3
11.12
Thu
morn
09 h
Partly cloudy +1 739 W
6 m/s
0.0 -4 -4
11.12
Thu
day
12 h
Light cloudy -3 742 W
6 m/s
0.0 -8 -8
11.12
Thu
day
15 h
Partly cloudy -1 744 W
6 m/s
0.0 -6 -5
11.12
Thu
even
18 h
Partly cloudy -1 744 W
8 m/s
0.0 -7 -7
11.12
Thu
even
21 h
Light cloudy -1 745 W
7 m/s
0.0 -7 -7
12.12
Fri
night
00 h
Clear -2 747 W
7 m/s
0.0 -8 -8
12.12
Fri
night
03 h
Light cloudy -3 748 W
6 m/s
0.0 -9 -9
12.12
Fri
morn
06 h
Light cloudy -5 751 NW
3 m/s
0.0 -9 -9
Tue, 09.12
Tue
Tue
Tue
Tue
Wen
Wen
Wen
Wen
12 h
15 h
18 h
21 h
00 h
03 h
06 h
09 h
Air temperature,°С
-10
-6
-2
-2
-3
-3
-2
-2
Atmospheric pressure
757
757
754
752
751
749
748
746
Wind
calm
S
1 m/s
S
3 m/s
S
4 m/s
S
4 m/s
S
4 m/s
SW
3 m/s
SW
3 m/s
Precipitation, mm
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
Tef,°C
-9
-7
-5
-6
-7
-7
-6
-6
Tefs,°C
-9
-4
-4
-6
-7
-7
-6
-6
Weather comfort
 
 
 
 
 
 
 
 
Wen
Wen
Wen
Wen
Thu
Thu
Thu
Thu
12 h
15 h
18 h
21 h
00 h
03 h
06 h
09 h
Air temperature,°С
-2
0
+2
+1
+2
+2
+1
+1
Atmospheric pressure
745
742
739
738
738
737
737
739
Wind
S
3 m/s
S
3 m/s
S
5 m/s
S
5 m/s
SW
4 m/s
SW
5 m/s
W
5 m/s
W
6 m/s
Precipitation, mm
0.0
0.1
1.3
2.4
0.4
0.1
0.0
0.0
Tef,°C
-5
-3
-2
-3
-2
-2
-3
-4
Tefs,°C
-5
-3
-2
-3
-2
-2
-3
-4
Weather comfort
 
 
 
 
 
 
 
 
Thu
Thu
Thu
Thu
Fri
Fri
Fri
12 h
15 h
18 h
21 h
00 h
03 h
06 h
Air temperature,°С
-3
-1
-1
-1
-2
-3
-5
Atmospheric pressure
742
744
744
745
747
748
751
Wind
W
6 m/s
W
6 m/s
W
8 m/s
W
7 m/s
W
7 m/s
W
6 m/s
NW
3 m/s
Precipitation, mm
0.0
0.0
0.0
0.0
0.0
0.0
0.0
Tef,°C
-8
-6
-7
-7
-8
-9
-9
Tefs,°C
-8
-5
-7
-7
-8
-9
-9
Weather comfort
 
 
 
 
 
 
 
 
  • Tue, 09.12
  • Wen, 10.12
  • Thu, 11.12
Location of a geographical point Allentown (Pennsylvania, USA): latitude 40.6508 longitude -75.4492 height above sea level 119 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.