Warm
Average highs sit around 28°C, giving warm days by monthly-average standards.
Weather Guide
Bismarck, North Dakota, United States Average Monthly Weather
Weather score50Mixed annual avg
Best months: July, August, June
Across the year, average daytime temperatures are around 12°C, sunshine averages 7.3h per day, and rainfall totals about 403mm.
Annual weather
Annual averages
Temp
12°C
Rain
403mm
Annual total
Sun
7.3h
Weather score
50
Mixed avg
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 47mm, which is relatively low for holiday planning.
Bright
Sunshine averages 10h per day, so bright days are a strong part of the month.
Map
Weather map
Compare Bismarck, North Dakota, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
August28°C average high
August is one of Bismarck's warmest months, with daytime heat above the yearly average.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
August47mm average rain
August sits near Bismarck's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsJanuary to April and September to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
August10 hours average sun
August is brighter than Bismarck's yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsJune to August
This stretch has the strongest sunshine in the monthly averages.
Weather score
August77 weather score
August scores above Bismarck's yearly average, so the overall weather mix is stronger than most months.
Best weather monthsJuly to August
These months have the strongest weather score in the monthly averages.
