Bismarck weather in May 2025

Expect 20°C daytime maximum temperatures in the shade with on average 10 hours of sunshine per day in Bismarck in May based on long-term weather averages. There is usually 10 days with some rainfall and 55 mm of average monthly rainfall in May.

  • 20°C maximum daytime temperature in May in Bismarck20
    20°C max day temperature
  • 10 hours of sunshine per day
  • 10 days with some rainfall in May in Bismarck10
    10 days with some rainfall
  • 6°C minimum night-time temperature in May in Bismarck6
    6°C min night temperature
  • 15 hours of daylight per day in May in Bismarck15
    15 hours of daylight per day
  • No heat & humidity in May in Bismarck0
    No heat & humidity
  • 55 mm monthly rainfall in May in Bismarck55
    55 mm of monthly rainfall
  • UV (maximum) index 6 (High) in May in Bismarck6
    6 (High) UV index

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The May 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)

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More about the USA

How hot is it in Bismarck in May?

Daytime temperatures usually reach 20°C in Bismarck in May, falling to 6°C at night.

How sunny is it in Bismarck in May?

There are normally 10 hours of bright sunshine each day in Bismarck in May - that's 63% of daylight hours.

Does it rain in Bismarck in May?

There are usually 10 days with some rain in Bismarck in May and the average monthly rainfall is 55mm.

Bismarck May sunrise & sunset times

Browse the sunrise and sunset times for Bismarck in May 2025. Select a month to view Bismarck sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st May 2025 05:27 19:54
Friday, 16th May 2025 05:07 20:13
Saturday, 31st May 2025 04:53 20:29

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