:. Helena Weather Conditions .:

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Historical Helena Weather Data

  Record
High
Temp
(°F)		 Normal
High
Temp
(°F)		 Normal
Low
Temp
(°F)		 Record
Low
Temp
(°F)		 Normal
Monthly
Precipitation
(in.)		 Normal
Monthly
Snowfall
(in.)
January 72 30.5 9.9 -42 0.52 8.5
February 69 37.3 -42 0.38 6
March 78 46.8 23.5 -30 0.63 7.4
April 86 56.9 31.2 1 0.91 4.9
May 93 65.9 39.8 17 1.78 1.4
June 100 75 47.5 30 1.82 0.1
July 83.4 52.3 36 1.34 T
August 82.5 50.8 28 1.29 0.1
September 99 71 41.2 18
October 87 58.4 31.2 -8 0.66 2.3
November 75 4 20.3 -39 0.48 6.3
December 64 3 11.3 -38 0.46 8.3