Helena
Montana, USA
Long-term weather forecast
Long-term weather forecast
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January weather forecast and Climate
Helena, MT

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The State Capital building of Montana in Helena city, set on a beautiful natural park
The State Capital building of Montana in Helena city, set on a beautiful natural park
  • The average high temperature in January: 33.3°F

The warmest month (with the highest average high temperature) is July (85.7°F).
The month with the lowest average high temperature is December (31.7°F).

  • The average low temperature in January: 13°F

The month with the highest average low temperature is July (54.3°F).
The coldest month (with the lowest average low temperature) is December (11.9°F).

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  • The average humidity in January: 66%

The month with the highest relative humidity is December (68.1%).
The month with the lowest relative humidity is July (46.4%).

  • The average rainfall in January: 0.4"

The wettest month (with the highest rainfall) is June (2.1").
The driest month (with the lowest rainfall) is February (0.3").

  • The average rainfall days in January: 6.2 days

The month with the highest number of rainy days is June (11.2 days).
The month with the lowest number of rainy days is February (5.9 days).

  • The average snowfall in January: 6.2"

The month with the highest snowfall is December (7.3").
Months with the lowest snowfall are June and July (0").

  • The average snowfall days in January: 5.6 days

The month with the highest number of snowfall days is December (6 days).
The month with the lowest number of snowfall days is July (0 days).

  • The average daylight in January: 9h

The month with the longest days is June (Average daylight: 16h).
Months with shortest days are January, November and December (Average daylight: 9h).

  • The average sunshine in January: 3.9h

The month with most sunshine is July (Average sunshine: 11.9h).
The month with least sunshine is December (Average sunshine: 3.2h).

  • The average UV index in January: 1

The month with the highest UV index is July (UV index 9).
Months with the lowest UV index are January, November and December (UV index 1).

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