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Simpson Lake Weather Forecast
| TODAY | TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT |
 |  | | | |  |  | |  | | | |
| Sunny | Clear | Sunny | Clear | Mostly Sunny | Partly Cloudy | Chance of T-Storm | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy |
| Hi: 99°FHi: 37°C | Lo: 70°FLo: 21°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: 71°FLo: 22°C | Hi: 95°FHi: 35°C | Lo: 70°FLo: 21°C | Hi: 91°FHi: 33°C | Lo: 69°FLo: 21°C |
| POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 627 AM CDT Fri Sep 18 2026 
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Issued: 638 AM CDT Fri Sep 18 2026
Key Messages
Issued at 101 AM CDT Fri Sep 18 2026- High temperatures in the middle to upper 90s will prevail again today and continue through the weekend and into early next week, with mostly dry conditions expected throughout.
- Slight rainfall chances may impact northern and western zones early next week, but confidence is trending downwards with increasingly limited coverage.
- The very slight cooling trend has shifted later again, with highs only in the low to middle 90s late next week, and more o...