August weather forecast
Bismarck, ND

The historical building of the State Capitol in Bismarck, North Dakota
The historical building of the State Capitol in Bismarck, North Dakota

Weather in August

The last month of the summer, August, is another warm month in Bismarck, North Dakota, with an average temperature fluctuating between 82.2°F (27.9°C) and 60.3°F (15.7°C).

Temperature

In Bismarck, the average high-temperature in August is practically the same as in July - a still warm 82.2°F (27.9°C). In Bismarck, in August, the average low-temperature is 60.3°F (15.7°C).

Heat index

In August, the average heat index is appraised at 83.8°F (28.8°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'apparent temperature', 'felt air temperature', or 'feels like', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (pregnancy, clothing, differences in body mass, height, and shape). Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

With an average relative humidity of 55%, August is the least humid month in Bismarck, North Dakota.

Rainfall

In Bismarck, North Dakota, in August, during 9.7 rainfall days, 1.38" (35mm) of precipitation is typically accumulated. In Bismarck, during the entire year, the rain falls for 105.9 days and collects up to 15" (381mm) of precipitation.

Snowfall

In Bismarck, North Dakota, snow does not fall in June through September.

Daylight

In August, the average length of the day is 14h and 9min.
On the first day of August in Bismarck, sunrise is at 6:23 am and sunset at 9:15 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 8:24 pm CDT.

Sunshine

In Bismarck, the average sunshine in August is 11h.

UV index

The average daily maximum UV index in August is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for average individuals.
Note: In August, the average maximum UV index of 5 translate into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in August in Bismarck?

In Bismarck, in August, the average high-temperature is 82.2°F (27.9°C), and the average low-temperature is 60.3°F (15.7°C). The average heat index (a.k.a. 'feels like', 'real feel'), which represents the influence of relative humidity on air temperature, in August is appraised at 83.8°F (28.8°C).

What is the least humid month in Bismarck?

August is the least humid month, with an average relative humidity of 55%.

What is the average humidity in August in Bismarck?

In August, the average relative humidity in Bismarck, North Dakota, is 55%.

How much does it rain in Bismarck in August?

In Bismarck, North Dakota, during August, the rain falls for 9.7 days and regularly aggregates up to 1.38" (35mm) of precipitation.

When it does not snow in Bismarck?

In Bismarck, snow does not fall in June through September.

What is the average length of the day in August in Bismarck?

The average day length in August is 14h and 9min.

When are sunrise and sunset in August in Bismarck?

In August, on the first day of the month, sunrise is at 6:23 am and sunset at 9:15 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 8:24 pm CDT.

How many hours of sunshine does Bismarck have in August?

In Bismarck, North Dakota, the average sunshine duration in August is 11h.

How high is the UV index in August in Bismarck?

The average daily maximum UV index in August in Bismarck is 5. A UV Index reading of 3 to 5 represents a medium hazard to health from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Bismarck, ND

Average temperature in August - Bismarck, ND
  • Average high temperature in August: 82.2°F

The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (20.8°F).

  • Average low temperature in August: 60.3°F

The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (6.1°F).

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Average pressure in August
Bismarck, ND

Average pressure in August - Bismarck, ND
  • Average pressure in August: 29.91"Hg

The month with the highest atmospheric pressure is February (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

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Average wind speed in August
Bismarck, ND

Average wind speed in August - Bismarck, ND
  • Average wind speed in August: 8.3mph

The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is August (8.3mph).

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Average humidity in August
Bismarck, ND

Average humidity in August - Bismarck, ND
  • Average humidity in August: 55%

The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (55%).

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Average rainfall in August
Bismarck, ND

Average rainfall in August - Bismarck, ND
  • Average rainfall in August: 1.38"

The wettest month (with the highest rainfall) is June (2.28").
The driest month (with the least rainfall) is January (0.59").

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Average rainfall days in August
Bismarck, ND

Average rainfall days in August - Bismarck, ND
  • Average rainfall days in August: 9.7 days

The month with the highest number of rainy days is May (15.5 days).
The month with the least rainy days is February (3.4 days).

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Average snowfall in August
Bismarck, ND

Average snowfall in August - Bismarck, ND
  • Average snowfall in August: 0"

The month with the highest snowfall is February (4.33").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in August
Bismarck, ND

Average snowfall days in August - Bismarck, ND
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is December (15.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in August /
Average sunshine in August
Bismarck, ND

Average daylight in August / Average sunshine in August - Bismarck, ND
  • Average daylight in August: 14h and 9min

The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 37min).

  • Average sunshine in August: 11h and 0min

The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).

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Average sunshine days in August
Bismarck, ND

Average sunshine days in August - Bismarck, ND
  • Average sunshine days in August: 18.8 days

The month with the most sunshine days is September (19.9 days).
The month with the least sunshine days is March (12.3 days).

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Average UV index in August
Bismarck, ND

Average UV index in August - Bismarck, ND
  • Average UV index in August: 5

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, November and December (UV index 1).

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Average cloud cover in August
Bismarck, ND

Average cloud cover in August - Bismarck, ND
  • Average cloud cover in August: 21

The month with the most cloud cover is February (Cloud cover 60).
The months with the least cloud cover are July and August (Cloud cover 21).

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Average visibility in August
Bismarck, ND

Average visibility in August - Bismarck, ND
  • Average visibility in August: 6mi

The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).

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