Weather forecast for 10 daysBethel Island, CA
Weather forecast for the weekend
Sunday Oct 18, 2026
- 84°F
- 52°F
Sunny
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 13mphW 272°
- Humidity: 42%
- UV index: 5
- Sunrise: 7:18 am PDT
- Sunset: 6:24 pm PDT
- details ▼
Today, in Bethel Island, sunny and dry conditions are anticipated.
Dramatic temperature shifts from a high of a temperate 84.2°F to a low of a crisp 51.8°F are expected.
The maximum heat index, which factors the actual air temperature with the relative humidity, is evaluated at 84.2°F.
Today, the forecasted high of 84.2°F is more in line with September's average of 85.3°F than October's 75.9°F.
Sunrise was at 7:18 am and sunset will be at 6:24 pm; the daylight will last for 11h and 7min.
Dramatic temperature shifts from a high of a temperate 84.2°F to a low of a crisp 51.8°F are expected.
The maximum heat index, which factors the actual air temperature with the relative humidity, is evaluated at 84.2°F.
Today, the forecasted high of 84.2°F is more in line with September's average of 85.3°F than October's 75.9°F.
Sunrise was at 7:18 am and sunset will be at 6:24 pm; the daylight will last for 11h and 7min.
10-day overview
Daily temperatures
Warmest day: today 84°C.
Coldest day: Wednesday 66°C.
Coldest day: Wednesday 66°C.
Chance of precipitation
Highest chance: Wednesday 50%.
Long-term weather forecast
- Sunday
- Oct 18, 2026
- 84°F
- 52°F
Sunny
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 13mphW 272°
- Humidity: 42%
- UV index: 5
- Sunrise: 7:18 am PDT
- Sunset: 6:24 pm PDT
- details ▼
- Monday
- Oct 19, 2026
- 72°F
- 48°F
Mostly Sunny
- Precip. probability: 8%
- Precipitation: 0"
- Wind: 14mphWSW 257°
- Humidity: 53%
- UV index: 5
- Sunrise: 7:19 am PDT
- Sunset: 6:23 pm PDT
- details ▼
- Tuesday
- Oct 20, 2026
- 72°F
- 55°F
Cloudy
- Precip. probability: 9%
- Precipitation: 0.04"
- Wind: 6mphNW 313°
- Humidity: 55%
- UV index: 3
- Sunrise: 7:20 am PDT
- Sunset: 6:22 pm PDT
- details ▼
- Wednesday
- Oct 21, 2026
- 66°F
- 54°F
Showers
- Precip. probability: 50%
- Precipitation: 0.16"
- Wind: 6mphWSW 256°
- Humidity: 66%
- UV index: 2
- Sunrise: 7:21 am PDT
- Sunset: 6:20 pm PDT
- details ▼
- Thursday
- Oct 22, 2026
- 70°F
- 52°F
Partly Cloudy
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 9mphW 264°
- Humidity: 71%
- UV index: 4
- Sunrise: 7:22 am PDT
- Sunset: 6:19 pm PDT
- details ▼
- Friday
- Oct 23, 2026
- 73°F
- 48°F
Partly Cloudy
- Precip. probability: 12%
- Precipitation: 0"
- Wind: 9mphWNW 303°
- Humidity: 63%
- UV index: 4
- Sunrise: 7:23 am PDT
- Sunset: 6:18 pm PDT
- details ▼
- Saturday
- Oct 24, 2026
- 75°F
- 48°F
Partly Cloudy
- Precip. probability: 18%
- Precipitation: 0"
- Wind: 7mphWNW 294°
- Humidity: 52%
- UV index: 4
- Sunrise: 7:24 am PDT
- Sunset: 6:17 pm PDT
- details ▼
- Sunday
- Oct 25, 2026
- 73°F
- 48°F
Partly Cloudy
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 7mphWNW 291°
- Humidity: 54%
- UV index: 4
- Sunrise: 7:25 am PDT
- Sunset: 6:15 pm PDT
- details ▼
- Monday
- Oct 26, 2026
- 73°F
- 46°F
Partly Cloudy
- Precip. probability: 20%
- Precipitation: 0"
- Wind: 7mphW 279°
- Humidity: 56%
- UV index: 4
- Sunrise: 7:26 am PDT
- Sunset: 6:14 pm PDT
- details ▼
- Tuesday
- Oct 27, 2026
- 73°F
- 46°F
Partly Cloudy
- Precip. probability: 9%
- Precipitation: 0"
- Wind: 7mphWNW 285°
- Humidity: 54%
- UV index: 4
- Sunrise: 7:27 am PDT
- Sunset: 6:13 pm PDT
- details ▼
Looking ahead, conditions suggest a period of primarily gloomy and occasionally mostly clear and damp weather is predicted.
With a 50% probability, rainfall is expected only on Wednesday. Forecasted precipitation will be light at 0.16".
There will be a considerable variation in temperature in the upcoming days. Maximum temperatures are forecasted between 66.2°F and 84.2°F, while nighttime temperatures are expected to vary from 46.4°F to 55.4°F.
Today is the hottest day, with a maximum temperature of 84.2°F; expect the coldest day on Wednesday with a high of 66.2°F.
With a 50% probability, rainfall is expected only on Wednesday. Forecasted precipitation will be light at 0.16".
There will be a considerable variation in temperature in the upcoming days. Maximum temperatures are forecasted between 66.2°F and 84.2°F, while nighttime temperatures are expected to vary from 46.4°F to 55.4°F.
Today is the hottest day, with a maximum temperature of 84.2°F; expect the coldest day on Wednesday with a high of 66.2°F.
Updated: Oct 18, 2026 @ 15:04:37 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, in Bethel Island, expect sunny weather with a crisp, clear sky.
Today, the highest temperature will be 84.2°F, while the lowest temperature will be 51.8°F. The maximum heat index, which modifies the air temperature to account for humidity, is appraised at 84.2°F.
The maximum temperature today will be a couple of degrees higher than the average highest temperature in October. The lowest temperature will be in line with the average low of 54°F.
The maximum temperature today will be a couple of degrees higher than the average highest temperature in October. The lowest temperature will be in line with the average low of 54°F.
On Sunday, in Bethel Island, sunrise was at 7:18 am and sunset will be at 6:24 pm (PDT).
Today, the daylight will last for 11h and 7min.
