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www.weatherandclimate.eu
The table shows the combined weather forecast Helena 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 Helena

Date Time Weather type Air temperature, °C Atmospheric pressure Wind Precipitation, mm Tef, °C Tefs, °C Weather comfort
12.08
Tue
even
18 h
Clear +23 664 NE
2 m/s
0.0 +19 +33
13.08
Wen
night
00 h
Clear +32 662 W
5 m/s
0.0 +27 +29
13.08
Wen
morn
06 h
Clear +19 659 SW
3 m/s
0.0 +19 +19
13.08
Wen
day
12 h
Clear +15 658 SW
2 m/s
0.0 +15 +15
13.08
Wen
even
18 h
Clear +26 661 NE
3 m/s
0.0 +22 +34
14.08
Thu
night
00 h
Clear +33 660 W
6 m/s
0.0 +28 +29
14.08
Thu
morn
06 h
Clear +19 658 SW
2 m/s
0.0 +19 +19
14.08
Thu
day
12 h
Clear +14 659 SW
2 m/s
0.0 +14 +14
14.08
Thu
even
18 h
Clear +24 663 N
3 m/s
0.0 +20 +32
15.08
Fri
night
00 h
Clear +30 661 NW
4 m/s
0.0 +25 +28
15.08
Fri
morn
06 h
Clear +20 661 W
2 m/s
0.0 +19 +19
15.08
Fri
day
12 h
Clear +14 661 SW
1 m/s
0.0 +15 +15
15.08
Fri
even
18 h
Clear +23 662 NE
2 m/s
0.0 +19 +31
16.08
Sat
night
00 h
Light cloudy +17 409 W
3 m/s
0.0 +17 +20
16.08
Sat
morn
06 h
Clear +9 349 SW
1 m/s
0.0 +9 +9
16.08
Sat
day
12 h
Light cloudy +7 333 S
1 m/s
0.0 +8 +8
16.08
Sat
even
18 h
Light cloudy +12 329 W
2 m/s
0.0 +12 +22
17.08
Sun
night
00 h
Clear +13 327 W
3 m/s
0.0 +13 +16
Tue, 12.08
Tue
Wen
Wen
Wen
Wen
Thu
Thu
Thu
18 h
00 h
06 h
12 h
18 h
00 h
06 h
12 h
Air temperature,°С
+23
+32
+19
+15
+26
+33
+19
+14
Atmospheric pressure
664
662
659
658
661
660
658
659
Wind
NE
2 m/s
W
5 m/s
SW
3 m/s
SW
2 m/s
NE
3 m/s
W
6 m/s
SW
2 m/s
SW
2 m/s
Precipitation, mm
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
Tef,°C
+19
+27
+19
+15
+22
+28
+19
+14
Tefs,°C
+33
+29
+19
+15
+34
+29
+19
+14
Weather comfort
 
 
 
 
 
 
 
 
Thu
Fri
Fri
Fri
Fri
Sat
Sat
Sat
18 h
00 h
06 h
12 h
18 h
00 h
06 h
12 h
Air temperature,°С
+24
+30
+20
+14
+23
+17
+9
+7
Atmospheric pressure
663
661
661
661
662
409
349
333
Wind
N
3 m/s
NW
4 m/s
W
2 m/s
SW
1 m/s
NE
2 m/s
W
3 m/s
SW
1 m/s
S
1 m/s
Precipitation, mm
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
Tef,°C
+20
+25
+19
+15
+19
+17
+9
+8
Tefs,°C
+32
+28
+19
+15
+31
+20
+9
+8
Weather comfort
 
 
 
 
 
 
 
 
Sat
Sun
18 h
00 h
Air temperature,°С
+12
+13
Atmospheric pressure
329
327
Wind
W
2 m/s
W
3 m/s
Precipitation, mm
0.0
0.0
Tef,°C
+12
+13
Tefs,°C
+22
+16
Weather comfort
 
 
 
 
 
 
 
 
Air temperature,°С
Atmospheric pressure
Wind
Precipitation, mm
Tef,°C
Tefs,°C
Weather comfort
 
 
 
 
 
 
 
 
  • Tue, 12.08
  • Thu, 14.08
  • Sat, 16.08
  • , .
Location of a geographical point Helena (Montana, USA): latitude 46.6056 longitude -111.9636 height above sea level 1167 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.