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Bismarck weather in August 2026
Expect daytime maximum temperatures of 28°C in Bismarck, North Dakota in August based on long-term weather averages. There are 10 hours of sunshine per day on average with typically 44 mm of rainfall in the month.
- 28°C max day temperature
28 - 10 hours of sunshine per day
- 8 days with some rainfall
8 - 12°C min night temperature
12 - 14 hours of daylight per day
14 - Low heat & humidity
L - 44 mm of monthly rainfall
44 - 7 (High) UV index
7
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Recommended for North Dakota
The August weather guide for North Dakota (Bismarck) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Metric (°C / mm) | Imperial (°F / inches)
More about the USA
How hot is it in Bismarck in August?
Daytime temperatures usually reach 28°C in Bismarck in August with low heat and humidity, falling to 12°C at night.
How sunny is it in Bismarck in August?
There are normally 10 hours of bright sunshine each day in Bismarck in August - that's 72% of daylight hours.
Does it rain in Bismarck in August?
There are usually 8 days with some rain in Bismarck in August and the average monthly rainfall is 44mm.
Bismarck August sunrise & sunset times
Browse the sunrise and sunset times for Bismarck in August 2026. Select a month to view Bismarck sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
| Date | Sunrise times | Sunset times |
|---|---|---|
| Saturday, 1st August 2026 | 05:23 | 20:15 |
| Sunday, 16th August 2026 | 05:42 | 19:52 |
| Monday, 31st August 2026 | 06:02 | 19:24 |
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