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The table shows the combined weather forecast in Great Falls 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 Great Falls

Date Time Weather type Air temperature, °C Atmospheric pressure Wind Precipitation, mm Tef, °C Tefs, °C Weather comfort
09.12
Tue
day
12 h
Light cloudy +8 654 SW
11 m/s
0.0 +4 +4
09.12
Tue
even
18 h
Light rain +7 661 NW
7 m/s
0.4 +4 +4
10.12
Wen
night
00 h
Light cloudy +5 664 W
5 m/s
0.0 +2 +2
10.12
Wen
morn
06 h
Mostly cloudy +2 665 S
2 m/s
0.0 0 0
10.12
Wen
day
12 h
Rain +3 661 S
4 m/s
0.9 0 0
10.12
Wen
even
18 h
Partly cloudy +10 658 SW
9 m/s
0.0 +7 +7
11.12
Thu
night
00 h
Mostly cloudy +11 660 SW
6 m/s
0.0 +9 +9
11.12
Thu
morn
06 h
Mostly cloudy +10 659 SW
8 m/s
0.0 +7 +7
11.12
Thu
day
12 h
Partly cloudy +9 658 W
5 m/s
0.0 +7 +7
11.12
Thu
even
18 h
Cloudy +9 661 W
7 m/s
0.0 +6 +6
12.12
Fri
night
00 h
Snow -7 665 NW
3 m/s
2.6 -11 -11
12.12
Fri
morn
06 h
Snow -9 667 NE
3 m/s
0.6 -13 -13
12.12
Fri
day
12 h
Light snow -11 666 NE
3 m/s
0.4 -16 -16
12.12
Fri
even
18 h
Snow -11 663 NE
2 m/s
1.4 -16 -16
13.12
Sat
night
00 h
Light snow -12 659 E
3 m/s
0.3 -18 -18
13.12
Sat
morn
06 h
Snow -12 659 NE
2 m/s
2.1 -17 -17
13.12
Sat
day
12 h
Light snow -13 660 NE
2 m/s
0.3 -18 -18
13.12
Sat
even
18 h
Mostly cloudy -14 663 NE
2 m/s
0.0 -19 -19
14.12
Sun
night
00 h
Partly cloudy -13 662 NE
2 m/s
0.0 -18 -18
14.12
Sun
morn
06 h
Partly cloudy -14 659 E
1 m/s
0.0 -16 -16
14.12
Sun
day
12 h
Light cloudy -12 657 E
1 m/s
0.0 -14 -14
14.12
Sun
even
18 h
Clear +3 660 SW
4 m/s
0.0 0 +1
15.12
Mon
night
00 h
Partly cloudy +4 661 SW
4 m/s
0.0 +2 +2
15.12
Mon
morn
06 h
Light cloudy +4 663 SW
4 m/s
0.0 +1 +1
15.12
Mon
day
12 h
Partly cloudy +4 663 SW
4 m/s
0.0 +1 +1
15.12
Mon
even
18 h
Partly cloudy +5 663 SW
3 m/s
0.0 +3 +4
16.12
Tue
night
00 h
Light cloudy +4 662 SW
3 m/s
0.0 +2 +2
16.12
Tue
morn
06 h
Light cloudy +5 659 SW
4 m/s
0.0 +2 +2
Tue, 09.12
Tue
Tue
Wen
Wen
Wen
Wen
Thu
Thu
12 h
18 h
00 h
06 h
12 h
18 h
00 h
06 h
Air temperature,°С
+8
+7
+5
+2
+3
+10
+11
+10
Atmospheric pressure
654
661
664
665
661
658
660
659
Wind
SW
11 m/s
NW
7 m/s
W
5 m/s
S
2 m/s
S
4 m/s
SW
9 m/s
SW
6 m/s
SW
8 m/s
Precipitation, mm
0.0
0.4
0.0
0.0
0.9
0.0
0.0
0.0
Tef,°C
+4
+4
+2
0
0
+7
+9
+7
Tefs,°C
+4
+4
+2
0
0
+7
+9
+7
Weather comfort
 
 
 
 
 
 
 
 
Thu
Thu
Fri
Fri
Fri
Fri
Sat
Sat
12 h
18 h
00 h
06 h
12 h
18 h
00 h
06 h
Air temperature,°С
+9
+9
-7
-9
-11
-11
-12
-12
Atmospheric pressure
658
661
665
667
666
663
659
659
Wind
W
5 m/s
W
7 m/s
NW
3 m/s
NE
3 m/s
NE
3 m/s
NE
2 m/s
E
3 m/s
NE
2 m/s
Precipitation, mm
0.0
0.0
2.6
0.6
0.4
1.4
0.3
2.1
Tef,°C
+7
+6
-11
-13
-16
-16
-18
-17
Tefs,°C
+7
+6
-11
-13
-16
-16
-18
-17
Weather comfort
 
 
 
 
 
 
 
 
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
-13
-14
-13
-14
-12
+3
+4
+4
Atmospheric pressure
660
663
662
659
657
660
661
663
Wind
NE
2 m/s
NE
2 m/s
NE
2 m/s
E
1 m/s
E
1 m/s
SW
4 m/s
SW
4 m/s
SW
4 m/s
Precipitation, mm
0.3
0.0
0.0
0.0
0.0
0.0
0.0
0.0
Tef,°C
-18
-19
-18
-16
-14
0
+2
+1
Tefs,°C
-18
-19
-18
-16
-14
+1
+2
+1
Weather comfort
 
 
 
 
 
 
 
 
Mon
Mon
Tue
Tue
12 h
18 h
00 h
06 h
Air temperature,°С
+4
+5
+4
+5
Atmospheric pressure
663
663
662
659
Wind
SW
4 m/s
SW
3 m/s
SW
3 m/s
SW
4 m/s
Precipitation, mm
0.0
0.0
0.0
0.0
Tef,°C
+1
+3
+2
+2
Tefs,°C
+1
+4
+2
+2
Weather comfort
 
 
 
 
 
 
 
 
  • Tue, 09.12
  • Thu, 11.12
  • Sat, 13.12
  • Mon, 15.12
Location of a geographical point Great Falls (Montana, USA): latitude 47.4733 longitude -111.3822 height above sea level 1117 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.