Weather World
Upper Lake, CA Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Upper Lake Weather Forecast
| TODAY | TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | VETERANS DAY | WEDNESDAY NIGHT |
 |  | | | |  |  |  |  | |  |  |
| Clearing | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy | Mostly Cloudy | Mostly Cloudy | Patchy Fog | Sunny | Patchy Fog | Chance of Rain | Chance of Rain |
| Hi: 73°FHi: 23°C | Lo: 49°FLo: 9°C | Hi: 73°FHi: 23°C | Lo: 46°FLo: 8°C | Hi: 70°FHi: 21°C | Lo: 47°FLo: 8°C | Hi: 67°FHi: 19°C | Lo: 46°FLo: 8°C | Hi: 71°FHi: 22°C | Lo: 49°FLo: 9°C | Hi: 67°FHi: 19°C | Hi: 64°FHi: 18°C Lo: 46°FLo: 8°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 1237 AM PST Fri Nov 06 2026 
Upper Lake Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Upper Lake Weather Map
Upper Lake Quick Facts
Upper Lake Forecast Discussion
Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 1221 AM PST Fri Nov 6 2026
Key Messages
- Light rain possible Saturday night in Humboldt and Del Norte counties.
- Stronger storm systems with heavy rain possible starting late next week.
- Minor to near moderate coastal flooding is likely around Humboldt Bay from November 7th to 10th.
Discussion
...Warm and dry weather is expected to continue this afternoon after a chilly start to the morning. Another chilly night is expected tonight, although temperatures are expected to warmer than Friday morning.
Saturday morning high clouds st...