Weather forecast for 10 daysVacaville, CA
Weather forecast for the weekend
Sunday Oct 18, 2026
- 82°F
- 48°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 12mphSW 224°
- Humidity: 43%
- UV index: 5
- Sunrise: 7:20 am PDT
- Sunset: 6:25 pm PDT
- details ▼
Tomorrow, the weather remains calm, bright, and sunny.
Temperature measurements will peak at a warm 82.4°F, with a considerable drop to a low of a frosty 48.2°F.
The maximum heat index, which modifies the air temperature to account for humidity, is computed to be 82.4°F.
Tomorrow, meteorological data suggests the high will feel more like September, based on a forecast of 82.4°F.
Sunrise will be at 7:20 am and sunset at 6:25 pm; tomorrow's daylight will last for 11h and 6min.
Temperature measurements will peak at a warm 82.4°F, with a considerable drop to a low of a frosty 48.2°F.
The maximum heat index, which modifies the air temperature to account for humidity, is computed to be 82.4°F.
Tomorrow, meteorological data suggests the high will feel more like September, based on a forecast of 82.4°F.
Sunrise will be at 7:20 am and sunset at 6:25 pm; tomorrow's daylight will last for 11h and 6min.
10-day overview
Daily temperatures
Warmest day: tomorrow 82°C.
Coldest period: Wednesday - Thursday 70°C.
Coldest period: Wednesday - Thursday 70°C.
Chance of precipitation
Highest chance: Wednesday 35%.
Long-term weather forecast
- Saturday
- Oct 17, 2026
- min.
- 52°F
Clear
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 3mphWSW 239°
- Humidity: 51%
- UV index: 0
- Sunrise: 7:19 am PDT
- Sunset: 6:27 pm PDT
- details ▼
- Sunday
- Oct 18, 2026
- 82°F
- 48°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 12mphSW 224°
- Humidity: 43%
- UV index: 5
- Sunrise: 7:20 am PDT
- Sunset: 6:25 pm PDT
- details ▼
- Monday
- Oct 19, 2026
- 72°F
- 48°F
Partly Cloudy
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 11mphSW 231°
- Humidity: 53%
- UV index: 5
- Sunrise: 7:21 am PDT
- Sunset: 6:24 pm PDT
- details ▼
- Tuesday
- Oct 20, 2026
- 73°F
- 54°F
Mostly Cloudy
- Precip. probability: 7%
- Precipitation: 0.04"
- Wind: 5mphNNE 30°
- Humidity: 52%
- UV index: 3
- Sunrise: 7:22 am PDT
- Sunset: 6:23 pm PDT
- details ▼
- Wednesday
- Oct 21, 2026
- 70°F
- 54°F
AM Showers
- Precip. probability: 35%
- Precipitation: 0.08"
- Wind: 6mphESE 121°
- Humidity: 55%
- UV index: 3
- Sunrise: 7:23 am PDT
- Sunset: 6:21 pm PDT
- details ▼
- Thursday
- Oct 22, 2026
- 70°F
- 50°F
Partly Cloudy
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 7mphSW 218°
- Humidity: 69%
- UV index: 4
- Sunrise: 7:24 am PDT
- Sunset: 6:20 pm PDT
- details ▼
- Friday
- Oct 23, 2026
- 73°F
- 46°F
Sunny
- Precip. probability: 12%
- Precipitation: 0"
- Wind: 6mphNNW 346°
- Humidity: 58%
- UV index: 4
- Sunrise: 7:25 am PDT
- Sunset: 6:19 pm PDT
- details ▼
- Saturday
- Oct 24, 2026
- 73°F
- 48°F
Partly Cloudy
- Precip. probability: 18%
- Precipitation: 0"
- Wind: 6mphSSW 202°
- Humidity: 55%
- UV index: 4
- Sunrise: 7:26 am PDT
- Sunset: 6:17 pm PDT
- details ▼
- Sunday
- Oct 25, 2026
- 73°F
- 50°F
Partly Cloudy
- Precip. probability: 17%
- Precipitation: 0"
- Wind: 8mphWSW 254°
- Humidity: 48%
- UV index: 4
- Sunrise: 7:27 am PDT
- Sunset: 6:16 pm PDT
- details ▼
- Monday
- Oct 26, 2026
- 72°F
- 46°F
Partly Cloudy
- Precip. probability: 13%
- Precipitation: 0"
- Wind: 7mphNW 306°
- Humidity: 43%
- UV index: 4
- Sunrise: 7:28 am PDT
- Sunset: 6:15 pm PDT
- details ▼
Models point to a combination of primarily gloomy and occasionally clear and rain-filled weather is forecasted.
With a 35% probability, rainfall is predicted only for Wednesday. The precipitation will be minimal at 0.08".
Expect a substantial fluctuation in daytime highs in the coming days. The maximum temperature will vary between 69.8°F and 82.4°F, while the forecast minimum temperature falls between 46.4°F and 53.6°F.
The warmest day will be Sunday, with a maximum of 82.4°F; the coldest days will be Wednesday and Thursday, with a maximum of 69.8°F.
With a 35% probability, rainfall is predicted only for Wednesday. The precipitation will be minimal at 0.08".
Expect a substantial fluctuation in daytime highs in the coming days. The maximum temperature will vary between 69.8°F and 82.4°F, while the forecast minimum temperature falls between 46.4°F and 53.6°F.
The warmest day will be Sunday, with a maximum of 82.4°F; the coldest days will be Wednesday and Thursday, with a maximum of 69.8°F.
Updated: Oct 18, 2026 @ 04:38:52 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 Vacaville, skies will stay clear and sunny.
Tomorrow, the maximum temperature will be 82.4°F, while the minimum temperature will be 48.2°F. The maximum heat index, which combines air temperature and relative humidity, is appraised at 82.4°F.
The highest temperature will be relatively higher than the average maximum of 76.5°F in October. The lowest temperature will be also slightly cooler than the average low of 54.1°F.
The highest temperature will be relatively higher than the average maximum of 76.5°F in October. The lowest temperature will be also slightly cooler than the average low of 54.1°F.
On Sunday, in Vacaville, sunrise will be at 7:20 am and sunset at 6:25 pm (PDT).
In Vacaville, tomorrow, there will be 11h and 6min of daylight.
