| NWS Forecast for: Grainger County Issued by: National Weather Service Morristown, TN Last Update: 706 AM EDT Wed Aug 26 2026 | |
| Today: Mostly sunny. Highs in the upper 80s. Light winds. Tonight: Mostly cloudy. A slight chance of showers late. Lows in the upper 60s. Light winds. Chance of rain 20 percent. Thursday: Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the upper 80s to lower 90s. Light winds. Chance of rain 50 percent. Thursday Night: Mostly cloudy. A chance of showers with a slight chance of thunderstorms in the evening, then a chance of showers after midnight. Lows in the upper 60s. Light winds. Chance of rain 50 percent. Friday: Partly sunny with a slight chance of showers and thunderstorms. Highs in the mid 80s. Light winds. Chance of rain 20 percent. Friday Night: Partly cloudy. Lows in the mid 60s. Saturday: Sunny. Highs in the upper 80s. Saturday Night: Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 60s. Sunday: Mostly sunny. Highs in the upper 80s. Sunday Night: Partly cloudy. Lows in the upper 60s. Monday: Sunny. Highs around 90. Monday Night: Mostly clear. Lows around 70. Tuesday: Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 20 percent. | |
| Zone Forecast: Grainger County | |
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