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The table shows the combined weather forecast in Waterloo 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 Waterloo

Date Time Weather type Air temperature, °C Atmospheric pressure Wind Precipitation, mm Tef, °C Tefs, °C Weather comfort
21.12
Sat
day
12 h
Clear -13 750 NE
1 m/s
0.0 -15 -15
21.12
Sat
day
15 h
Clear -11 751 E
1 m/s
0.0 -12 -11
21.12
Sat
even
18 h
Clear -6 749 S
2 m/s
0.0 -9 -6
21.12
Sat
even
21 h
Light cloudy -4 748 SE
3 m/s
0.0 -8 -7
22.12
Sun
night
00 h
Partly cloudy -6 746 SE
3 m/s
0.0 -10 -10
22.12
Sun
night
03 h
Mostly cloudy -6 745 S
4 m/s
0.0 -11 -11
22.12
Sun
morn
06 h
Light cloudy -5 745 SE
4 m/s
0.0 -10 -10
22.12
Sun
morn
09 h
Light cloudy -5 744 S
4 m/s
0.0 -10 -10
22.12
Sun
day
12 h
Clear -5 743 S
5 m/s
0.0 -11 -11
22.12
Sun
day
15 h
Light cloudy -4 743 S
5 m/s
0.0 -10 -10
22.12
Sun
even
18 h
Partly cloudy -1 741 S
6 m/s
0.0 -6 -5
22.12
Sun
even
21 h
Cloudy +2 739 S
6 m/s
0.0 -3 -3
23.12
Mon
night
00 h
Mostly cloudy +1 738 S
6 m/s
0.0 -3 -3
23.12
Mon
night
03 h
Mostly cloudy +1 737 S
6 m/s
0.0 -3 -3
23.12
Mon
morn
06 h
Partly cloudy +1 736 S
5 m/s
0.2 -3 -3
23.12
Mon
morn
09 h
Cloudy +2 736 S
4 m/s
0.0 -2 -2
23.12
Mon
day
12 h
Partly cloudy 0 736 SW
4 m/s
0.1 -3 -3
23.12
Mon
day
15 h
Cloudy -0 738 W
4 m/s
0.0 -4 -4
23.12
Mon
even
18 h
Mostly cloudy +1 738 NW
5 m/s
0.0 -3 -2
23.12
Mon
even
21 h
Mostly cloudy +1 740 NW
5 m/s
0.0 -3 -3
24.12
Tue
night
00 h
Cloudy -0 742 NW
3 m/s
0.0 -3 -3
24.12
Tue
night
03 h
Cloudy -1 743 NW
3 m/s
0.0 -4 -4
24.12
Tue
morn
06 h
Cloudy -1 744 N
2 m/s
0.0 -3 -3
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
-13
-11
-6
-4
-6
-6
-5
-5
Atmospheric pressure
750
751
749
748
746
745
745
744
Wind
NE
1 m/s
E
1 m/s
S
2 m/s
SE
3 m/s
SE
3 m/s
S
4 m/s
SE
4 m/s
S
4 m/s
Precipitation, mm
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
Tef,°C
-15
-12
-9
-8
-10
-11
-10
-10
Tefs,°C
-15
-11
-6
-7
-10
-11
-10
-10
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
-5
-4
-1
+2
+1
+1
+1
+2
Atmospheric pressure
743
743
741
739
738
737
736
736
Wind
S
5 m/s
S
5 m/s
S
6 m/s
S
6 m/s
S
6 m/s
S
6 m/s
S
5 m/s
S
4 m/s
Precipitation, mm
0.0
0.0
0.0
0.0
0.0
0.0
0.2
0.0
Tef,°C
-11
-10
-6
-3
-3
-3
-3
-2
Tefs,°C
-11
-10
-5
-3
-3
-3
-3
-2
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
0
-0
+1
+1
-0
-1
-1
Atmospheric pressure
736
738
738
740
742
743
744
Wind
SW
4 m/s
W
4 m/s
NW
5 m/s
NW
5 m/s
NW
3 m/s
NW
3 m/s
N
2 m/s
Precipitation, mm
0.1
0.0
0.0
0.0
0.0
0.0
0.0
Tef,°C
-3
-4
-3
-3
-3
-4
-3
Tefs,°C
-3
-4
-2
-3
-3
-4
-3
Weather comfort
 
 
 
 
 
 
 
 
  • Sat, 21.12
  • Sun, 22.12
  • Mon, 23.12
Location of a geographical point Waterloo (Iowa, USA): latitude 42.5544 longitude -92.4011 height above sea level 265 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.