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Folsom Weather Forecast
| THIS AFTERNOON | TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT |
 |  |  |  |  |  |  | |  |  | | |
| Chance of T-Storm | Chance of T-Storm | Chance of Showers | Mostly Cloudy | Mostly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy | Mostly Sunny | Mostly Clear | Clearing | Clearing |
| Hi: 61°FHi: 16°C | Lo: 49°FLo: 9°C | Hi: 61°FHi: 16°C | Lo: 45°FLo: 7°C | Hi: 70°FHi: 21°C | Lo: 51°FLo: 11°C | Hi: 81°FHi: 27°C | Lo: 51°FLo: 11°C | Hi: 81°FHi: 27°C | Lo: 51°FLo: 11°C | Hi: 81°FHi: 27°C | Lo: 55°FLo: 13°C |
| POP: 90% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1227 PM MDT Sun Sep 20 2026 
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Issued: 1147 AM MDT Sun Sep 20 2026
Key Messages
- Showers will gradually decrease in coverage overnight.
- Areas of fog will continue through Monday morning. Reduced visibilty expected around the Black Hills and across the western South Dakota plains for the Monday morning commute.
- More clouds than sun to start the week, followed by warmer and drier conditions later in the week.
Discussion
...(This Afternoon Through Saturday) Issued at 1144 AM MDT Sun Sep 20 2026
Water vapor and upper level analysis depicts a low centered over Wyoming, a...