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Vacaville, CA Weather Forecast

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Vacaville, CA Weather Forecast

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Vacaville CA weather - Clear - 63°F
Clear
63°F
Updated 9:10 pm
Feels Like 55°F
Humidity 72%
Wind SSW 6 mph
Barometer  29.86 in
Dew Point 54°F
Vacaville CA weather - Clear - 17°C
Clear
17°C
Updated 9:10 pm
Feels Like 13°C
Humidity 72%
Wind SSW 10 km/h
Barometer  101.1 kPa
Dew Point 12°C
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Vacaville Weather Forecast

TONIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY THURSDAY NIGHT FRIDAY FRIDAY NIGHT SATURDAY SUNDAY SUNDAY NIGHT
Vacaville, CA Weather - Tonight Clear Vacaville, CA Weather - Tuesday Mostly Sunny Vacaville, CA Weather - Tuesday Night Clear Vacaville, CA Weather - Wednesday Mostly Sunny Vacaville, CA Weather - Wednesday Night Clear Vacaville, CA Weather - Thursday Sunny Vacaville, CA Weather - Thursday Night Mostly Clear Vacaville, CA Weather - Friday Mostly Sunny Vacaville, CA Weather - Friday Night Clear Vacaville, CA Weather - Saturday Mostly Clear Vacaville, CA Weather - Sunday Mostly Clear Vacaville, CA Weather - Sunday Night Clear
Clear Mostly Sunny Clear Mostly Sunny Clear Sunny Mostly Clear Mostly Sunny Clear Mostly Clear Mostly Clear Clear
Lo: 56°FLo: 13°C Hi: 82°FHi: 28°C
 Lo: 57°FLo: 14°C Hi: 91°FHi: 33°C
 Lo: 61°FLo: 16°C Hi: 90°FHi: 32°C
 Lo: 61°FLo: 16°C Hi: 83°FHi: 28°C
 Lo: 58°FLo: 14°C Hi: 81°FHi: 27°C
Lo: 57°FLo: 14°C		 Hi: 81°FHi: 27°C
Lo: 57°FLo: 14°C		 Hi: 84°FHi: 29°C
Lo: 57°FLo: 14°C
POP = Probability of Precipitation.
Weather Outlook Updated: 800 PM PDT Mon Sep 21 2026 Vacaville, CA Weather - WeatherWorld.com

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Vacaville Forecast Discussion

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Issued: 117 PM PDT Mon Sep 21 2026

Key Messages

  • Periodically breezy winds and warming temperatures, peaking on Thursday with areas of Moderate HeatRisk in the Valley.
  • Isolated mountain shower and thunderstorm chances (less than 10%) today along the Sierra Crest.
  • Potential for unsettled weather and increased onshore winds over the weekend as a system passes to our north.

Discussion

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...Today through Thursday...

Scattered clouds continue to move across parts of northern California today, with cooler temperatures and breezy onshore wi...