Weather forecast for todayVacaville, CA

Weather forecast for today

Current condition 1:45 pm PDT

  • 84°F
  • Feels like:
    84°F
Sunny
Sunny
  • Precipitation: 0"
  • Wind: 6mphNE 40°
  • Humidity: 20%
  • Dewpoint: 39°F
  • Pressure: 30.01"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
Currently, blue skies stretch endlessly, with the sun at its brightest.
The temperature is a moderately hot 84.2°F. The current temperature is only a few degrees off the maximum of 89.6°F for today.

Saturday Oct 17, 2026

  • 90°F
  • 50°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphSE 125°
  • Humidity: 18%
  • UV index: 5
  • Sunrise: 7:19 am PDT
  • Sunset: 6:27 pm PDT
  • ▼
Today, on Saturday, October 17, bright and sunny weather is expected.
Substantial temperature fluctuations from a high of a tropical 89.6°F to a low of a crisp 50°F are predicted.
The expected high of 89.6°F appears seasonally off, better matching September's typical values.
Sunrise was at 7:19 am and sunset will be at 6:27 pm; the daylight will last for 11h and 8min.

Hourly overview

Hourly temperatures

Warmest period: 3 pm - 5 pm 88°C.
Coldest hour: 11 pm 63°C.

Chance of precipitation

Highest chance: 2 pm - 11 pm 0%.

Hourly weather forecast

  • 2 pm
  • 86°F
  • Feels like:
    86°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 5mphENE 61°
  • Humidity: 19%
  • Pressure: 30"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 3 pm
  • 88°F
  • Feels like:
    88°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphE 91°
  • Humidity: 17%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 4 pm
  • 88°F
  • Feels like:
    88°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphSE 129°
  • Humidity: 16%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 5 pm
  • 88°F
  • Feels like:
    88°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphSSE 158°
  • Humidity: 16%
  • Pressure: 29.91"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 6 pm
  • 84°F
  • Feels like:
    84°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphSSW 200°
  • Humidity: 19%
  • Pressure: 29.91"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:27 pm
  • 7 pm
  • 77°F
  • Feels like:
    77°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphSSW 211°
  • Humidity: 25%
  • Pressure: 29.91"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 8 pm
  • 72°F
  • Feels like:
    72°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 3mphSW 224°
  • Humidity: 30%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 9 pm
  • 68°F
  • Feels like:
    68°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 2mphSW 229°
  • Humidity: 34%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 66°F
  • Feels like:
    66°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 2mphSW 223°
  • Humidity: 39%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 11 pm
  • 63°F
  • Feels like:
    63°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 2mphSW 228°
  • Humidity: 43%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 12 am
  • 61°F
  • Feels like:
    61°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 2mphSW 225°
  • Humidity: 46%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
For the rest of Saturday, primarily bright and sunny weather is anticipated.
The temperature will be between the highest temperature of 87.8°F and the lowest temperature of 62.6°F. The hottest part of the day will be from 3 pm to 5 pm.
The maximum temperature will align more closely with September's average high of 86.9°F than with October's 76.5°F. Today, expect the temperature to dip to a level a couple of degrees lower than the average October low.
Updated: Oct 17, 2026 @ 20:45:47 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

The temperature at 1:45 pm PDT is 84.2°F.

On Saturday, in Vacaville, a sun-drenched sky is anticipated.

Today, the highest temperature will be 89.6°F, while the lowest temperature will be 50°F.
The maximum temperature will be noticeably higher than the average highest temperature of 76.5°F in October. The lowest temperature today will be moderately lower than the average low temperature.

On Saturday, in Vacaville, sunrise was at 7:19 am and sunset will be at 6:27 pm (PDT).

In Vacaville, the length of the day today will be 11h and 8min.