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Grass Lake Weather Forecast
| TODAY | TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | SATURDAY | SUNDAY |
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| Sunny | Clear | Sunny | Clear | Sunny | Clear | Clear | Clear | Clear | Clear | Partly Cloudy |
| Hi: 73°FHi: 23°C | Lo: 42°FLo: 6°C | Hi: 80°FHi: 27°C | Lo: 43°FLo: 6°C | Hi: 75°FHi: 24°C | Lo: 42°FLo: 6°C | Hi: 73°FHi: 23°C Lo: 42°FLo: 6°C | Hi: 73°FHi: 23°C Lo: 42°FLo: 6°C | Hi: 79°FHi: 26°C Lo: 46°FLo: 8°C | Hi: 79°FHi: 26°C Lo: 46°FLo: 8°C | Hi: 81°FHi: 27°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 231 AM PDT Mon Sep 14 2026 
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Issued: 102 AM PDT Mon Sep 14 2026
Key Messages
- A cool start to the week will be followed by a gradual warming trend accompanied by generally dry conditions and lighter winds.
- An upper level low will drop into northern CA and NV Wednesday and Thursday. This will result in cooler temperatures, increased breezes, and low chances for showers near the Oregon border.
- Dry and warmer conditions with lighter winds are likely to return for next weekend.
Discussion
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After a chilly start this morning, light northeast to east winds will limit...