10-Day Weather Forecast - Gann Valley, SD
- 86|66°FRainHourly details
Today
86°FMostly sunny with likely rain. Chance of precipitation 90%. High temperature around 86F. Dew point will be around 64F with an average humidity of 64%. Winds will be 4 mph from the S.
Tonight
66°FMostly clear. Lows in the lower 60s. Southeast winds 5 to 10 mph.
- 88|66°FPartly SunnyHourly details
Day
88°FPartly sunny. A slight chance of thunderstorms in the afternoon. Humid with highs in the upper 80s. Southeast winds 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Chance of rain 20 percent.
Night
66°FShowers likely in the evening. Mostly cloudy with a chance of thunderstorms. Humid with lows in the lower 60s. East winds 10 to 15 mph. Chance of rain 70 percent.
- 83|65°FPartly SunnyHourly details
Day
83°FPartly sunny. A slight chance of thunderstorms in the afternoon. Humid with highs in the upper 80s. East winds 5 to 10 mph. Chance of rain 20 percent.
Night
65°FShowers likely with a chance of thunderstorms in the evening then partly cloudy after midnight. Humid with lows in the lower 60s. Northeast winds 5 to 10 mph. Chance of rain 70 percent.
Weekend Weather
- 84|65°FPartly SunnyHourly details
Day
84°FPartly sunny. Highs in the upper 80s.
Night
65°FPartly cloudy. A chance of thunderstorms mainly in the evening. Lows in the lower 60s. Chance of rain 30 percent.
- 88|68°FSunnyHourly details
Day
88°FMostly clear. Hot. Highs around 90. Lows in the mid 60s.
Night
68°FMostly clear. Hot. Highs around 90. Lows in the mid 60s.
- 87|69°FPartly CloudyHourly details
Day
87°FPartly sunny. Hot with highs around 90.
Night
69°FMostly clear in the evening then becoming partly cloudy. A 20 percent chance of thunderstorms. Lows in the upper 60s.
- 91|68°FMostly Sunny
Day
91°FPartly sunny. Hot with highs in the lower 90s.
Night
68°FPartly cloudy. A 20 percent chance of thunderstorms. Lows in the upper 60s. Highs in the upper 80s.
- 86|67°FPartly Cloudy
Day
86°FPartly cloudy. A 20 percent chance of thunderstorms. Lows in the upper 60s. Highs in the upper 80s.
Night
67°FClear with a chance of rain. Chance of precipitation 35%. Low temperature around 67F. Dew point will be around 65F with an average humidity of 72%. Winds will be 8 mph from the SE.
- 85|66°F30% Chance of Rain
Day
85°FSunny with a slight chance of rain. Chance of precipitation 25%. High temperature around 85F. Dew point will be around 65F with an average humidity of 66%. Winds will be 7 mph from the SE.
Night
66°FClear with a 35% chance for rain and thunderstorms. Low temperature around 66F. Dew point will be around 65F with an average humidity of 73%. Winds will be 7 mph from the SE.
- 84|65°F30% Chance of Rain
Day
84°FMostly sunny with a slight chance of rain. Chance of precipitation 25%. High temperature around 84F. Dew point will be around 65F with an average humidity of 70%. Winds will be 7 mph from the SE.
Night
65°FClear with a slight chance of rain. Chance of precipitation 30%. Low temperature around 65F. Dew point will be around 65F with an average humidity of 73%. Winds will be 8 mph from the SE.













