For daily wit & wisdom, get the Almanac newsletter.
Long-Range Weather Forecast for Simi Valley, CA
60-Day Weather Forecast
| Dates | Weather Conditions |
|---|---|
| Aug 1-9 | Sunny; hot inland, warm coast |
| Aug 10-17 | Isolated sprinkles north, sunny south; warm |
| Aug 18-21 | Sunny, hot |
| Aug 22-31 | Sunny, hot inland; a |
| Aug m | |
| Aug clouds, | p |
| Aug m | |
| Aug sun, | cool coast |
| August | temperature 73° (1° above avg.) precipitation 0" (avg.) |
| Dates | Weather Conditions |
|---|---|
| Sep 1-9 | Sunny, warm |
| Sep 10-14 | Plenty of sun; cool north, hot south |
| Sep 15-22 | A few showers north, sunny south; cool |
| Sep 23-30 | Isolated showers, cool |
| September | temperature 72° (avg.) precipitation 0.3" (0.2" above avg.) |
12-Month Long-Range Weather Outlook
November 2025 to October 2026
Winter will be warmer and drier than normal, with below-normal mountain snows. The coldest temperatures will occur in late January and late February. The stormiest periods will be in late November, mid-January, and late February. April and May will be warmer than normal with below-normal rainfall. Summer will be hotter and drier than normal, with the hottest periods in early and late June and mid- to late August. September and October will be cooler than normal, with above-normal rainfall in the north and below-normal south.See the complete 12-month weather forecast in The Old Farmer’s Almanac..
Weather Trend Graph
November 2025 to October 2026
