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Arrowhead Lake Weather Forecast
| REST OF TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | TUESDAY | WEDNESDAY | THURSDAY |
 |  | |  |  | | | | | | |
| Partly Cloudy | Clearing | Partly Cloudy | Sunny | Mostly Clear | Partly Cloudy | Partly Cloudy | Mostly Clear | Mostly Clear | Mostly Clear | Mostly Clear |
| Lo: 46°FLo: 8°C | Hi: 70°FHi: 21°C | Lo: 46°FLo: 8°C | Hi: 76°FHi: 24°C | Lo: 50°FLo: 10°C | Hi: 76°FHi: 24°C | Lo: 50°FLo: 10°C | Hi: 76°FHi: 24°C Lo: 50°FLo: 10°C | Hi: 76°FHi: 24°C Lo: 50°FLo: 10°C | Hi: 76°FHi: 24°C Lo: 50°FLo: 10°C | Hi: 76°FHi: 24°C Lo: 50°FLo: 10°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 1119 PM PDT Thu Oct 01 2026 
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Issued: 151 AM PDT Fri Oct 2 2026
Key Messages
- Temperatures trend hotter Saturday and Sunday, with high temperatures expected to be 10 to 20 degrees above normal.
- Very warm and dry conditions this weekend will bring some elevated fire weather concerns due to near summer-like dryness, but critical fire weather conditions are not expected.
- A weak upper level disturbance Sunday night into Monday will bring a very low chance (5%) for showers or thunderstorms for Modoc County.
- Very warm temperatures persist through the middle of next ...