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The table shows the combined weather forecast in Watertown for a week 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 Watertown

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 -12 722 S
4 m/s
0.0 -19 -19
21.12
Sat
even
18 h
Light cloudy -8 719 S
5 m/s
0.0 -15 -14
22.12
Sun
night
00 h
Light cloudy -8 715 S
4 m/s
0.0 -13 -13
22.12
Sun
morn
06 h
Clear -6 713 S
4 m/s
0.0 -12 -12
22.12
Sun
day
12 h
Partly cloudy -6 711 S
3 m/s
0.0 -10 -10
22.12
Sun
even
18 h
Mostly cloudy -3 710 S
3 m/s
0.0 -6 -5
23.12
Mon
night
00 h
Mostly cloudy -3 710 NE
2 m/s
0.0 -5 -5
23.12
Mon
morn
06 h
Mostly cloudy -4 712 NW
3 m/s
0.2 -8 -8
23.12
Mon
day
12 h
Cloudy -6 713 N
4 m/s
0.0 -11 -11
23.12
Mon
even
18 h
Mostly cloudy -6 716 N
2 m/s
0.0 -9 -8
24.12
Tue
night
00 h
Mostly cloudy -6 718 NE
1 m/s
0.0 -7 -7
24.12
Tue
morn
06 h
Cloudy -6 719 S
2 m/s
0.0 -10 -10
24.12
Tue
day
12 h
Mostly cloudy -5 718 S
3 m/s
0.0 -8 -8
24.12
Tue
even
18 h
Mostly cloudy -1 718 S
4 m/s
0.0 -5 -4
25.12
Wen
night
00 h
Light cloudy -1 716 S
4 m/s
0.0 -5 -5
25.12
Wen
morn
06 h
Light cloudy -1 715 S
4 m/s
0.0 -5 -5
25.12
Wen
day
12 h
Partly cloudy -1 714 S
4 m/s
0.0 -5 -5
25.12
Wen
even
18 h
Cloudy +1 714 S
6 m/s
0.0 -4 -4
26.12
Thu
night
00 h
Cloudy +1 714 S
5 m/s
0.0 -3 -3
26.12
Thu
morn
06 h
Mostly cloudy +1 715 S
4 m/s
0.0 -3 -3
26.12
Thu
day
12 h
Mostly cloudy +1 714 S
4 m/s
0.1 -3 -3
26.12
Thu
even
18 h
Cloudy +1 713 S
5 m/s
0.0 -3 -3
27.12
Fri
night
00 h
Cloudy +1 712 S
5 m/s
0.0 -3 -3
27.12
Fri
morn
06 h
Mostly cloudy -0 533 S
3 m/s
0.1 -3 -3
27.12
Fri
day
12 h
Cloudy +1 711 S
6 m/s
0.1 -3 -3
27.12
Fri
even
18 h
Light rain +2 711 S
3 m/s
0.3 0 0
28.12
Sat
night
00 h
Light rain +2 710 S
4 m/s
0.3 -1 -1
28.12
Sat
morn
06 h
Light rain +4 711 S
6 m/s
0.5 0 0
Sat, 21.12
Sat
Sat
Sun
Sun
Sun
Sun
Mon
Mon
12 h
18 h
00 h
06 h
12 h
18 h
00 h
06 h
Air temperature,°С
-12
-8
-8
-6
-6
-3
-3
-4
Atmospheric pressure
722
719
715
713
711
710
710
712
Wind
S
4 m/s
S
5 m/s
S
4 m/s
S
4 m/s
S
3 m/s
S
3 m/s
NE
2 m/s
NW
3 m/s
Precipitation, mm
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.2
Tef,°C
-19
-15
-13
-12
-10
-6
-5
-8
Tefs,°C
-19
-14
-13
-12
-10
-5
-5
-8
Weather comfort
 
 
 
 
 
 
 
 
Mon
Mon
Tue
Tue
Tue
Tue
Wen
Wen
12 h
18 h
00 h
06 h
12 h
18 h
00 h
06 h
Air temperature,°С
-6
-6
-6
-6
-5
-1
-1
-1
Atmospheric pressure
713
716
718
719
718
718
716
715
Wind
N
4 m/s
N
2 m/s
NE
1 m/s
S
2 m/s
S
3 m/s
S
4 m/s
S
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
-11
-9
-7
-10
-8
-5
-5
-5
Tefs,°C
-11
-8
-7
-10
-8
-4
-5
-5
Weather comfort
 
 
 
 
 
 
 
 
Wen
Wen
Thu
Thu
Thu
Thu
Fri
Fri
12 h
18 h
00 h
06 h
12 h
18 h
00 h
06 h
Air temperature,°С
-1
+1
+1
+1
+1
+1
+1
-0
Atmospheric pressure
714
714
714
715
714
713
712
533
Wind
S
4 m/s
S
6 m/s
S
5 m/s
S
4 m/s
S
4 m/s
S
5 m/s
S
5 m/s
S
3 m/s
Precipitation, mm
0.0
0.0
0.0
0.0
0.1
0.0
0.0
0.1
Tef,°C
-5
-4
-3
-3
-3
-3
-3
-3
Tefs,°C
-5
-4
-3
-3
-3
-3
-3
-3
Weather comfort
 
 
 
 
 
 
 
 
Fri
Fri
Sat
Sat
12 h
18 h
00 h
06 h
Air temperature,°С
+1
+2
+2
+4
Atmospheric pressure
711
711
710
711
Wind
S
6 m/s
S
3 m/s
S
4 m/s
S
6 m/s
Precipitation, mm
0.1
0.3
0.3
0.5
Tef,°C
-3
0
-1
0
Tefs,°C
-3
0
-1
0
Weather comfort
 
 
 
 
 
 
 
 
  • Sat, 21.12
  • Mon, 23.12
  • Wen, 25.12
  • Fri, 27.12
Location of a geographical point Watertown (South Dakota, USA): latitude 44.9047 longitude -97.1494 height above sea level 533 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.