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Town of Johnstown, COJohnstown, CO Weather Forecast
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Johnstown Weather Forecast
| REST OF TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY |
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| Chance of Rain | Chance of Rain | Chance of Rain | Mostly Sunny | Mostly Clear | Partly Cloudy | Chance of Showers | Mostly Clear | Mostly Clear | Partly Cloudy | Partly Cloudy | Chance of Showers |
| Lo: 45°FLo: 7°C | Hi: 51°FHi: 11°C | Lo: 38°FLo: 3°C | Hi: 57°FHi: 14°C | Lo: 33°FLo: 1°C | Hi: 55°FHi: 13°C | Lo: 33°FLo: 1°C | Hi: 55°FHi: 13°C Lo: 33°FLo: 1°C | Hi: 55°FHi: 13°C Lo: 33°FLo: 1°C | Hi: 59°FHi: 15°C Lo: 33°FLo: 1°C | Hi: 59°FHi: 15°C Lo: 33°FLo: 1°C | Hi: 55°FHi: 13°C |
| POP: 40% | POP: 70% | POP: 50% | POP: 20% | POP: 10% |
POP = Probability of Precipitation.
Weather Outlook Updated: 844 PM MST Sun Nov 01 2026 
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Issued: 1128 PM MST Sun Nov 1 2026
Key Messages
- Snow likely (> 80% chance) for the mountains through most of Monday. Snow level falls to 9,000 to 9,500 feet Monday morning and down to 8,000 feet Monday afternoon.
- Mountain roads will become slippery in spots above 8,500 feet, especially through mountain passes.
- Scattered to numerous rain showers and cooler temperatures for the plains on Monday. A few snowflakes possible for the Palmer Divide on Monday night.
- Another chance for some rain and snow for the mountains on Wednesday bring...