Weather forecast for 10 daysThermalito, CA
Weather forecast for the weekend
Sunday Oct 18, 2026
- 86°F
- 52°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 10mphSSE 167°
- Humidity: 32%
- UV index: 4
- Sunrise: 7:19 am PDT
- Sunset: 6:23 pm PDT
- details ▼
Tomorrow, on Sunday, October 18, sunshine is also expected with little to no cloud cover.
Significant temperature fluctuations from a high of a hot 86°F to a low of a fresh 51.8°F are predicted.
Tomorrow, the expected high will be higher and much closer to September's average high of 88.9°F than October's 76.1°F.
Sunrise will be at 7:19 am and sunset at 6:23 pm; tomorrow's daylight will last for 11h and 3min.
Significant temperature fluctuations from a high of a hot 86°F to a low of a fresh 51.8°F are predicted.
Tomorrow, the expected high will be higher and much closer to September's average high of 88.9°F than October's 76.1°F.
Sunrise will be at 7:19 am and sunset at 6:23 pm; tomorrow's daylight will last for 11h and 3min.
10-day overview
Daily temperatures
Warmest day: tomorrow 86°C.
Coldest day: Thursday 66°C.
Coldest day: Thursday 66°C.
Chance of precipitation
Highest chance: Thursday 42%.
Long-term weather forecast
- Saturday
- Oct 17, 2026
- min.
- 52°F
Mostly Clear
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 4mphNE 50°
- Humidity: 39%
- UV index: 0
- Sunrise: 7:18 am PDT
- Sunset: 6:24 pm PDT
- details ▼
- Sunday
- Oct 18, 2026
- 86°F
- 52°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 10mphSSE 167°
- Humidity: 32%
- UV index: 4
- Sunrise: 7:19 am PDT
- Sunset: 6:23 pm PDT
- details ▼
- Monday
- Oct 19, 2026
- 72°F
- 50°F
Mostly Sunny
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 10mphS 173°
- Humidity: 51%
- UV index: 4
- Sunrise: 7:20 am PDT
- Sunset: 6:21 pm PDT
- details ▼
- Tuesday
- Oct 20, 2026
- 73°F
- 55°F
Mostly Cloudy
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 4mphWSW 240°
- Humidity: 51%
- UV index: 3
- Sunrise: 7:21 am PDT
- Sunset: 6:20 pm PDT
- details ▼
- Wednesday
- Oct 21, 2026
- 70°F
- 54°F
PM Showers
- Precip. probability: 33%
- Precipitation: 0.04"
- Wind: 7mphS 187°
- Humidity: 56%
- UV index: 3
- Sunrise: 7:22 am PDT
- Sunset: 6:18 pm PDT
- details ▼
- Thursday
- Oct 22, 2026
- 66°F
- 52°F
AM Showers
- Precip. probability: 42%
- Precipitation: 0.12"
- Wind: 7mphS 183°
- Humidity: 79%
- UV index: 4
- Sunrise: 7:24 am PDT
- Sunset: 6:17 pm PDT
- details ▼
- Friday
- Oct 23, 2026
- 72°F
- 46°F
Mostly Sunny
- Precip. probability: 17%
- Precipitation: 0"
- Wind: 6mphWSW 245°
- Humidity: 69%
- UV index: 4
- Sunrise: 7:25 am PDT
- Sunset: 6:16 pm PDT
- details ▼
- Saturday
- Oct 24, 2026
- 72°F
- 48°F
Partly Cloudy
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 6mphS 183°
- Humidity: 61%
- UV index: 4
- Sunrise: 7:26 am PDT
- Sunset: 6:14 pm PDT
- details ▼
- Sunday
- Oct 25, 2026
- 72°F
- 48°F
Partly Cloudy
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 6mphSSW 198°
- Humidity: 55%
- UV index: 4
- Sunrise: 7:27 am PDT
- Sunset: 6:13 pm PDT
- details ▼
- Monday
- Oct 26, 2026
- 70°F
- 45°F
Partly Cloudy
- Precip. probability: 16%
- Precipitation: 0"
- Wind: 6mphSW 218°
- Humidity: 50%
- UV index: 4
- Sunrise: 7:28 am PDT
- Sunset: 6:12 pm PDT
- details ▼
Models point to a combination of cloud-filled, dry and sunny and rainy weather is expected.
Rainfall is predicted for Wednesday and Thursday.
Temperature differences will be noticeable across the forecast period. The maximum temperature will vary between 66.2°F and 86°F, while the forecast minimum temperature falls between 44.6°F and 55.4°F.
Sunday is expected to be the hottest, reaching up to 86°F; Thursday will be the coldest day, with the highest temperature of 66.2°F.
Rainfall is predicted for Wednesday and Thursday.
Temperature differences will be noticeable across the forecast period. The maximum temperature will vary between 66.2°F and 86°F, while the forecast minimum temperature falls between 44.6°F and 55.4°F.
Sunday is expected to be the hottest, reaching up to 86°F; Thursday will be the coldest day, with the highest temperature of 66.2°F.
Updated: Oct 18, 2026 @ 06:28:19 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Frequently asked questions
On Sunday, expect sunny weather with a crisp, clear sky.
Tomorrow, the highest temperature will be 86°F, while the lowest temperature will be 51.8°F.
The maximum temperature tomorrow will be notably higher than the average highest temperature of 76.1°F in October. The lowest temperature will be in line with the average low of 54°F.
The maximum temperature tomorrow will be notably higher than the average highest temperature of 76.1°F in October. The lowest temperature will be in line with the average low of 54°F.
On Sunday, in Thermalito, sunrise will be at 7:19 am and sunset at 6:23 pm (PDT).
Tomorrow, the daylight will last for 11h and 3min.
