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Jack Downs Reservoir Weather Forecast
| TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | SATURDAY | SATURDAY NIGHT |
 |  |  |  | |  |  | | | | |  |
| Chance of Showers | Mostly Sunny | Partly Cloudy | Clearing | Partly Cloudy | Chance of T-Storm | Mostly Clear | Mostly Clear | Mostly Clear | Mostly Clear | Mostly Sunny | Chance of Showers |
| Lo: 49°FLo: 9°C | Hi: 69°FHi: 21°C | Lo: 49°FLo: 9°C | Hi: 75°FHi: 24°C | Lo: 51°FLo: 11°C | Hi: 79°FHi: 26°C | Hi: 85°FHi: 29°C Lo: 51°FLo: 11°C | Hi: 85°FHi: 29°C Lo: 51°FLo: 11°C | Hi: 85°FHi: 29°C Lo: 55°FLo: 13°C | Hi: 85°FHi: 29°C Lo: 55°FLo: 13°C | Hi: 75°FHi: 24°C | Hi: 69°FHi: 21°C Lo: 49°FLo: 9°C |
| POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 326 PM MDT Sun Sep 20 2026 
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Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 1255 PM MDT Sun Sep 20 2026
Key Messages
- Precipitation is expected to end this evening, and the low pressure system will slowly move east by tomorrow afternoon.
- Above average temperatures beginning Tuesday as upper ridging builds in. A low pressure system is expected to move in by the weekend.
Discussion
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A low pressure system over eastern Wyoming will continue to maintain rain showers through about 9 PM tonight, and low cloud cover from now through tomorrow morning is expected to remain in place. This system will eventuall...