National Weather Service Forecast for: Mandan ND
Issued by: National Weather Service Bismarck, ND
Updated: 2:11 am CDT Aug 20, 2026
 
Overnight

Overnight: Partly cloudy, with a low around 60. Northwest wind around 5 mph.
Partly Cloudy

 Thursday

Thursday: Mostly sunny, with a high near 86. Light west wind becoming northwest 10 to 15 mph in the morning. Winds could gust as high as 26 mph.
Mostly Sunny

 Thursday
Night
Thursday Night: Mostly clear, with a low around 56. Northwest wind 6 to 11 mph becoming light and variable in the evening. Winds could gust as high as 20 mph.
Mostly Clear

 Friday

Friday: Mostly sunny, with a high near 85. Calm wind becoming north 5 to 9 mph in the afternoon. Winds could gust as high as 20 mph.
Mostly Sunny

 Friday
Night
Friday Night: Mostly clear, with a low around 54. North wind 6 to 11 mph becoming light northeast after midnight. Winds could gust as high as 18 mph.
Mostly Clear

 Saturday

Saturday: Sunny, with a high near 83. Calm wind becoming east around 5 mph in the afternoon.
Sunny

 Saturday
Night
Saturday Night: Mostly cloudy, with a low around 58. Southeast wind 6 to 8 mph.
Mostly Cloudy

 Sunday

Sunday: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 83. Southeast wind 9 to 16 mph, with gusts as high as 28 mph.
Slight Chance
Showers then
Chance
T-storms
 Sunday
Night
Sunday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 60. Southeast wind 8 to 15 mph, with gusts as high as 24 mph.
Chance
T-storms
Lo 60 °F Hi 86 °F Lo 56 °F Hi 85 °F Lo 54 °F Hi 83 °F Lo 58 °F Hi 83 °F Lo 60 °F

 

Overnight
 
 Partly cloudy, with a low around 60. Northwest wind around 5 mph.
Thursday
 
 Mostly sunny, with a high near 86. Light west wind becoming northwest 10 to 15 mph in the morning. Winds could gust as high as 26 mph.
Thursday Night
 
 Mostly clear, with a low around 56. Northwest wind 6 to 11 mph becoming light and variable in the evening. Winds could gust as high as 20 mph.
Friday
 
 Mostly sunny, with a high near 85. Calm wind becoming north 5 to 9 mph in the afternoon. Winds could gust as high as 20 mph.
Friday Night
 
 Mostly clear, with a low around 54. North wind 6 to 11 mph becoming light northeast after midnight. Winds could gust as high as 18 mph.
Saturday
 
 Sunny, with a high near 83. Calm wind becoming east around 5 mph in the afternoon.
Saturday Night
 
 Mostly cloudy, with a low around 58. Southeast wind 6 to 8 mph.
Sunday
 
 A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 83. Southeast wind 9 to 16 mph, with gusts as high as 28 mph.
Sunday Night
 
 A chance of showers and thunderstorms. Mostly cloudy, with a low around 60. Southeast wind 8 to 15 mph, with gusts as high as 24 mph.
Monday
 
 Mostly sunny, with a high near 88. South wind 7 to 14 mph becoming west in the afternoon. Winds could gust as high as 24 mph.
Monday Night
 
 Mostly clear, with a low around 59. West wind 6 to 11 mph, with gusts as high as 20 mph.
Tuesday
 
 Sunny, with a high near 85. Northwest wind 6 to 11 mph, with gusts as high as 23 mph.
Tuesday Night
 
 Mostly clear, with a low around 55. Northwest wind 5 to 10 mph becoming light north after midnight.
Wednesday
 
 Mostly sunny, with a high near 83.

 

Forecast from NOAA-NWS for Mandan ND.