Current Conditions

Vacaville, California

94°F35°C

Hot

Wind

ENE 3 mph4 km/h

Humidity

16%

Cloud Cover

46%

As of Tuesday, September 8, 2026 at 6:27 PM PDT

Today's Outlook

Night

Mostly cloudy, with a low around 67°F20°C. Light wind from the W around 4 mph7 km/h.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Hot	High 99°F37°C	Low 67°F20°C	Precip 0 in0 mm—	Cloud 71%	Wind NW 4 mph6 km/h	Wednesday: Mostly cloudy and hot, with a high of 99°F37°C and morning low of 71°F22°C. Light wind from the NNW around 4 mph6 km/h. Heat risk in the afternoon. Wednesday Night: Mostly cloudy, with a low around 67°F20°C. Light wind from the W around 4 mph7 km/h.
Hot	High 98°F37°C	Low 70°F21°C	Precip 0 in0 mm—	Cloud 29%	Wind WSW 6 mph9 km/h	Thursday: Partly cloudy and hot, with a high of 98°F37°C and morning low of 72°F22°C. Breezy from the WSW at 6 to 10 mph9 to 16 km/h. Heat risk in the afternoon. Thursday Night: Partly cloudy, with a low around 70°F21°C. Breezy from the WSW at 6 to 8 mph9 to 13 km/h.
Clear	High 86°F30°C	Low 64°F18°C	Precip 0 in0 mm—	Cloud 6%	Wind SW 8 mph12 km/h	Friday: Mostly clear and hot, with a high of 86°F30°C and morning low of 65°F18°C. Breezy from the SW at 8 to 10 mph13 to 17 km/h. Friday Night: Mostly clear, with a low around 64°F18°C. Breezy from the SW at 7 to 8 mph11 to 13 km/h.
Clear	High 83°F28°C	Low 60°F16°C	Precip 0 in0 mm—	Cloud 8%	Wind SW 9 mph14 km/h	Saturday: Mostly clear and warm, with a high of 83°F28°C and morning low of 62°F17°C. Breezy from the SW at 10 to 12 mph16 to 19 km/h. Dry air. Saturday Night: Mostly clear, with a low around 60°F16°C. Breezy from the SW at 8 to 10 mph12 to 15 km/h.
Clear	High 85°F29°C	Low 59°F15°C	Precip 0 in0 mm—	Cloud 5%	Wind W 5 mph8 km/h	Sunday: Mostly clear and warm, with a high of 85°F29°C and morning low of 62°F17°C. Light wind from the NW around 5 mph8 km/h. Dry air. Sunday Night: Mostly clear, with a low around 59°F15°C. Light wind from the WSW around 5 mph8 km/h.
Clear	High 87°F31°C	Low 58°F15°C	Precip 0 in0 mm—	Cloud 8%	Wind WSW 4 mph7 km/h	Monday: Mostly clear and hot, with a high of 87°F31°C and morning low of 61°F16°C. Light wind from the W around 4 mph6 km/h. Dry air. Monday Night: Mostly clear, with a low around 58°F15°C. Light wind from the WSW around 5 mph8 km/h.
Clear	High 82°F28°C	Low 58°F15°C	Precip 0 in0 mm—	Cloud 16%	Wind SW 6 mph9 km/h	Tuesday: Mostly clear and warm, with a high of 82°F28°C and morning low of 62°F16°C. Breezy from the SW at 6 to 8 mph9 to 13 km/h. Tuesday Night: Mostly clear, with a low around 58°F15°C. Breezy from the SW at 6 to 7 mph9 to 12 km/h.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	WednesdaySep 9	99°F37°C	67°F20°C	0 in0 mm· —	71%	Hot	NW 4 mph6 km/h
DayMostly cloudy and hot, with a high of 99°F37°C and morning low of 71°F22°C. Light wind from the NNW around 4 mph6 km/h. Heat risk in the afternoon. NightMostly cloudy, with a low around 67°F20°C. Light wind from the W around 4 mph7 km/h.
	ThursdaySep 10	98°F37°C	70°F21°C	0 in0 mm· —	29%	Hot	WSW 6 mph9 km/h
DayPartly cloudy and hot, with a high of 98°F37°C and morning low of 72°F22°C. Breezy from the WSW at 6 to 10 mph9 to 16 km/h. Heat risk in the afternoon. NightPartly cloudy, with a low around 70°F21°C. Breezy from the WSW at 6 to 8 mph9 to 13 km/h.
	FridaySep 11	86°F30°C	64°F18°C	0 in0 mm· —	6%	Clear	SW 8 mph12 km/h
DayMostly clear and hot, with a high of 86°F30°C and morning low of 65°F18°C. Breezy from the SW at 8 to 10 mph13 to 17 km/h. NightMostly clear, with a low around 64°F18°C. Breezy from the SW at 7 to 8 mph11 to 13 km/h.
	SaturdaySep 12	83°F28°C	60°F16°C	0 in0 mm· —	8%	Clear	SW 9 mph14 km/h
DayMostly clear and warm, with a high of 83°F28°C and morning low of 62°F17°C. Breezy from the SW at 10 to 12 mph16 to 19 km/h. Dry air. NightMostly clear, with a low around 60°F16°C. Breezy from the SW at 8 to 10 mph12 to 15 km/h.
	SundaySep 13	85°F29°C	59°F15°C	0 in0 mm· —	5%	Clear	W 5 mph8 km/h
DayMostly clear and warm, with a high of 85°F29°C and morning low of 62°F17°C. Light wind from the NW around 5 mph8 km/h. Dry air. NightMostly clear, with a low around 59°F15°C. Light wind from the WSW around 5 mph8 km/h.
	MondaySep 14	87°F31°C	58°F15°C	0 in0 mm· —	8%	Clear	WSW 4 mph7 km/h
DayMostly clear and hot, with a high of 87°F31°C and morning low of 61°F16°C. Light wind from the W around 4 mph6 km/h. Dry air. NightMostly clear, with a low around 58°F15°C. Light wind from the WSW around 5 mph8 km/h.
	TuesdaySep 15	82°F28°C	58°F15°C	0 in0 mm· —	16%	Clear	SW 6 mph9 km/h
DayMostly clear and warm, with a high of 82°F28°C and morning low of 62°F16°C. Breezy from the SW at 6 to 8 mph9 to 13 km/h. NightMostly clear, with a low around 58°F15°C. Breezy from the SW at 6 to 7 mph9 to 12 km/h.
	WednesdaySep 16	81°F27°C	58°F14°C	0 in0 mm· —	19%	Clear	SW 6 mph9 km/h
DayMostly clear and warm, with a high of 81°F27°C and morning low of 60°F16°C. Breezy from the SW at 5 to 7 mph9 to 11 km/h. NightMostly clear, with a low around 58°F14°C. Breezy from the SW at 6 to 7 mph9 to 11 km/h.
	ThursdaySep 17	82°F28°C	57°F14°C	0 in0 mm· —	15%	Clear	SW 5 mph8 km/h
DayMostly clear and warm, with a high of 82°F28°C and morning low of 61°F16°C. Light wind from the WSW around 5 mph8 km/h. NightMostly clear, with a low around 57°F14°C. Light wind from the SW around 5 mph8 km/h.
	FridaySep 18	83°F28°C	58°F14°C	0 in0 mm· —	20%	Clear	WSW 5 mph8 km/h
DayMostly clear and warm, with a high of 83°F28°C and morning low of 60°F15°C. Light wind from the WSW around 5 mph8 km/h. Dry air. NightMostly clear, with a low around 58°F14°C. Light wind from the WSW around 5 mph8 km/h.
	SaturdaySep 19	83°F28°C	58°F14°C	0 in0 mm· —	25%	Clear	SW 5 mph8 km/h
DayPartly cloudy and warm, with a high of 83°F28°C and morning low of 60°F15°C. Light wind from the WSW around 5 mph8 km/h. NightPartly cloudy, with a low around 58°F14°C. Light wind from the SW around 5 mph8 km/h.
	SundaySep 20	82°F28°C	58°F15°C	0 in0.1 mm· 2%	25%	Clear	SW 5 mph8 km/h
DayPartly cloudy and warm, with a high of 82°F28°C and morning low of 60°F16°C. Breezy from the SW at 5 to 7 mph8 to 11 km/h. NightPartly cloudy, with a low around 58°F15°C. Light wind from the SW around 5 mph9 km/h.
	MondaySep 21	83°F28°C	59°F15°C	0 in0 mm· —	27%	Clear	SW 5 mph8 km/h
DayPartly cloudy and warm, with a high of 83°F28°C and morning low of 60°F16°C. Light wind from the WSW around 5 mph8 km/h. NightPartly cloudy, with a low around 59°F15°C. Light wind from the SW around 5 mph9 km/h.
	TuesdaySep 22	84°F29°C	60°F15°C	0.01 in0.2 mm· 3%	33%	Clear	WSW 5 mph8 km/h
DayPartly cloudy and warm, with a high of 84°F29°C and morning low of 62°F17°C. Light wind from the WSW around 5 mph8 km/h. NightPartly cloudy, with a low around 60°F15°C. Light wind from the WSW around 5 mph8 km/h.
	WednesdaySep 23	84°F29°C	61°F16°C	0.01 in0.2 mm· 4%	27%	Clear	W 5 mph8 km/h
DayPartly cloudy and warm, with a high of 84°F29°C and morning low of 62°F17°C. Light wind from the W around 5 mph8 km/h. Dry air. NightPartly cloudy, with a low around 61°F16°C. Light wind from the W around 5 mph8 km/h.

Nearby Cities

Fairfield8 mi13 km Suisun9 mi14 km Dixon11 mi17 km Napa17 mi27 km Davis19 mi30 km American Canyon19 mi31 km

About This Forecast

This forecast is powered by WeatherMesh, the world's most advanced and accurate weather model powered by AI. WeatherMesh is built on proprietary data from WindBorne's Global Sounding Balloon constellation — the world's largest fleet of autonomous, long-duration weather balloons — collecting observations across 100% of Earth, including over oceans and remote regions where no other data exists.

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Coordinates: 38.3566°N, 121.9877°W·Elevation: 53m·Timezone: America/Los_Angeles·Population: 96,803