| NWS Forecast for: Grant County Issued by: National Weather Service Aberdeen, SD Last Update: 1236 AM CDT Mon Jun 29 2026 |  |
Rest Of Tonight: Mostly cloudy. Patchy fog. Near steady temperature in the lower 70s. East winds 5 to 10 mph with gusts up to 25 mph. Monday: Partly sunny. A slight chance of thunderstorms in the morning. Patchy fog in the morning. Breezy, hot with highs in the mid 90s. Southeast winds 10 to 15 mph with gusts up to 30 mph, increasing to south 20 to 25 mph with gusts up to 40 mph in the afternoon. Chance of rain 20 percent. Heat index values up to 103 in the afternoon. Monday Night: Mostly clear and breezy and less humid with lows in the mid 60s. Southwest winds 20 to 25 mph with gusts up to 35 mph, diminishing to 10 to 15 mph with gusts up to 25 mph after midnight. Tuesday: Mostly sunny. Highs in the upper 80s. Southwest winds 10 to 15 mph with gusts up to 30 mph. Tuesday Night: Mostly clear in the evening, then partly cloudy with a chance of showers with a slight chance of thunderstorms after midnight. Lows in the mid 60s. Southwest winds 10 to 15 mph. Chance of rain 40 percent. Wednesday: Partly sunny. A chance of showers with a slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 50 percent. Wednesday Night: Partly cloudy. A chance of thunderstorms in the evening. Lows in the mid 60s. Chance of rain 50 percent. Thursday: Partly sunny. A slight chance of thunderstorms in the afternoon. Hot with highs in the lower 90s. Chance of rain 20 percent. Thursday Night: Showers likely with a chance of thunderstorms in the evening, then mostly cloudy with a chance of showers with a slight chance of thunderstorms after midnight. Lows in the upper 60s. Chance of rain 70 percent. Friday: Partly sunny. Hot with highs in the lower 90s. Friday Night Through Saturday Night: Partly cloudy with a 50 percent chance of thunderstorms. Hot. Lows in the upper 60s. Highs around 90. Sunday: Partly sunny. A slight chance of thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 20 percent. | |
| Zone Forecast: Grant County | |
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