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Greshams Lake, TN Weather Forecast
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Greshams Lake Weather Forecast
| OVERNIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY |
 |  |  | | | |  | | | | | |
| Mostly Clear | Sunny | Partly Cloudy | Sunny | Partly Cloudy | Mostly Sunny | Chance of T-Storm | Mostly Sunny | Clearing | Sunny | Mostly Clear | Sunny |
| Lo: 75°FLo: 24°C | Hi: 99°FHi: 37°C | Lo: 71°FLo: 22°C | Hi: 99°FHi: 37°C | Lo: 75°FLo: 24°C | Hi: 99°FHi: 37°C | Lo: 69°FLo: 21°C | Hi: 91°FHi: 33°C | Lo: 65°FLo: 18°C | Hi: 85°FHi: 29°C | Lo: 61°FLo: 16°C | Hi: 85°FHi: 29°C |
| POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1205 AM CDT Sat Sep 19 2026 
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Issued: 1035 PM CDT Fri Sep 18 2026
Key Messages
Issued at 1034 PM CDT Fri Sep 18 2026- An area-wide Heat Advisory remains in effect through 8 PM Saturday, with afternoon temperatures reaching the upper 90s to lower 100s.
- A weak cold front will bring isolated to scattered showers and thunderstorms early next week. Widespread significant rainfall is not expected.
- A slight cooling trend is expected by Wednesday, bringing temperatures down from near-record values to above-normal for late September.
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