National Weather Service Forecast for: Casselton ND
Issued by: National Weather Service Grand Forks, ND
Updated: 2:52 am CDT Aug 20, 2026
 
Overnight

Overnight: A 30 percent chance of showers and thunderstorms, mainly before 5am. Mostly cloudy, with a steady temperature around 67. South wind around 14 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Chance
Showers

 Thursday

Thursday: A 10 percent chance of showers and thunderstorms before 7am. Mostly sunny, with a high near 85. Breezy, with a south southwest wind 11 to 16 mph becoming northwest 18 to 23 mph in the afternoon. Winds could gust as high as 33 mph.
Slight Chance
T-storms then
Mostly Sunny
and Breezy
 Thursday
Night
Thursday Night: Mostly clear, with a low around 56. Breezy, with a north wind 15 to 20 mph decreasing to 5 to 10 mph after midnight.
Partly Cloudy
and Breezy
then Mostly
Clear
 Friday

Friday: A slight chance of showers between 2pm and 3pm. Mostly sunny, with a high near 84. North northwest wind 5 to 10 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 20%.
Sunny then
Slight Chance
Showers
 Friday
Night
Friday Night: Mostly clear, with a low around 55. North wind 7 to 16 mph.
Mostly Clear

 Saturday

Saturday: Sunny, with a high near 81. North wind 7 to 13 mph.
Sunny

 Saturday
Night
Saturday Night: Partly cloudy, with a low around 52. North northeast wind 5 to 9 mph becoming light and variable after midnight.
Partly Cloudy

 Sunday

Sunday: Mostly sunny, with a high near 82. Light southeast wind becoming south southeast 6 to 11 mph in the morning.
Mostly Sunny

 Sunday
Night
Sunday Night: A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 59. Southeast wind 11 to 14 mph.
Partly Cloudy
then Chance
Showers
Lo 67 °F Hi 85 °F Lo 56 °F Hi 84 °F Lo 55 °F Hi 81 °F Lo 52 °F Hi 82 °F Lo 59 °F

Hazardous Weather Outlook
 

Overnight
 
 A 30 percent chance of showers and thunderstorms, mainly before 5am. Mostly cloudy, with a steady temperature around 67. South wind around 14 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
 
 A 10 percent chance of showers and thunderstorms before 7am. Mostly sunny, with a high near 85. Breezy, with a south southwest wind 11 to 16 mph becoming northwest 18 to 23 mph in the afternoon. Winds could gust as high as 33 mph.
Thursday Night
 
 Mostly clear, with a low around 56. Breezy, with a north wind 15 to 20 mph decreasing to 5 to 10 mph after midnight.
Friday
 
 A slight chance of showers between 2pm and 3pm. Mostly sunny, with a high near 84. North northwest wind 5 to 10 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 20%.
Friday Night
 
 Mostly clear, with a low around 55. North wind 7 to 16 mph.
Saturday
 
 Sunny, with a high near 81. North wind 7 to 13 mph.
Saturday Night
 
 Partly cloudy, with a low around 52. North northeast wind 5 to 9 mph becoming light and variable after midnight.
Sunday
 
 Mostly sunny, with a high near 82. Light southeast wind becoming south southeast 6 to 11 mph in the morning.
Sunday Night
 
 A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 59. Southeast wind 11 to 14 mph.
Monday
 
 A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 86. Breezy, with a south southeast wind 13 to 20 mph, with gusts as high as 30 mph.
Monday Night
 
 A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 61. South southwest wind 10 to 17 mph.
Tuesday
 
 Mostly sunny, with a high near 85. Breezy, with a northwest wind 13 to 23 mph, with gusts as high as 34 mph.
Tuesday Night
 
 Mostly clear, with a low around 58. Breezy, with a north northwest wind 15 to 20 mph decreasing to 9 to 14 mph after midnight.
Wednesday
 
 Mostly sunny, with a high near 83. North northwest wind 9 to 15 mph.

 

Forecast from NOAA-NWS for Casselton ND.