Bismarck
North Dakota, USA
Long-term weather forecast
Long-term weather forecast

August weather forecast and Climate
Bismarck, ND

An across the park view of the historic building of the State Capitol in Bismarck, North Dakota
An across the park view of the historic building of the State Capitol in Bismarck, North Dakota
  • The average high temperature in August: 28.6°C

The warmest month (with the highest average high temperature) is July (29.3°C).
The month with the lowest average high temperature is January (-4.8°C).

  • The average low temperature in August: 13.1°C

The month with the highest average low temperature is July (14.1°C).
The coldest month (with the lowest average low temperature) is January (-16.6°C).

  • The average humidity in August: 60.6%

The month with the highest relative humidity is December (74.5%).
The month with the lowest relative humidity is May (60.1%).

  • The average rainfall in August: 57.9mm

The wettest month (with the highest rainfall) is June (80.5mm).
The driest month (with the lowest rainfall) is January (10.9mm).

  • The average rainfall days in August: 8.2 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 October (6.6 days).

  • The average snowfall in August: 0mm

The month with the highest snowfall is December (236.2mm).
Months with the lowest snowfall are June, July and August (0mm).

  • The average snowfall days in August: 0 days

The month with the highest number of snowfall days is December (10 days).
Months with the lowest number of snowfall days are June, July and August (0 days).

  • The average daylight in August: 14h

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 August: 10.2h

The month with most sunshine is July (Average sunshine: 11.4h).
The month with least sunshine is December (Average sunshine: 4h).

  • The average UV index in August: 7

Months with the highest UV index are June and July (UV index 8).
Months with the lowest UV index are January, November and December (UV index 1).

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