Current Conditions

Vacaville, California

66°F19°C

Clear

Wind

SW 8 mph13 km/h

Humidity

73%

Cloud Cover

As of Monday, September 21, 2026 at 8:47 PM PDT

Today's Outlook

Night

Partly cloudy, with a low around 58°F14°C. Light wind from the SW around 5 mph8 km/h.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Clear	High 79°F26°C	Low 58°F14°C	Precip 0 in0 mm—	Cloud 27%	Wind SW 5 mph8 km/h	Tuesday: Mostly clear and warm, with a high of 79°F26°C and morning low of 59°F15°C. Light wind from the SW around 5 mph7 km/h. Tuesday Night: Partly cloudy, with a low around 58°F14°C. Light wind from the SW around 5 mph8 km/h.
Clear	High 89°F32°C	Low 57°F14°C	Precip 0 in0 mm—	Cloud 34%	Wind WSW 3 mph5 km/h	Wednesday: Partly cloudy and hot, with a high of 89°F32°C and morning low of 59°F15°C. Light wind from the NNE around 2 mph3 km/h. Wednesday Night: Partly cloudy, with a low around 57°F14°C. Light wind from the WSW around 4 mph6 km/h.
Partly Cloudy	High 88°F31°C	Low 60°F16°C	Precip 0 in0 mm—	Cloud 49%	Wind SW 5 mph9 km/h	Thursday: Mostly cloudy and hot, with a high of 88°F31°C and morning low of 62°F17°C. Breezy from the SW at 5 to 9 mph9 to 15 km/h. Thursday Night: Partly cloudy, with a low around 60°F16°C. Breezy from the SW at 5 to 7 mph8 to 12 km/h.
Clear	High 83°F28°C	Low 61°F16°C	Precip 0 in0 mm—	Cloud 25%	Wind SW 6 mph10 km/h	Friday: Mostly clear and warm, with a high of 83°F28°C and morning low of 62°F17°C. Breezy from the SW at 7 to 8 mph11 to 14 km/h. Friday Night: Partly cloudy, with a low around 61°F16°C. Light wind from the SW around 6 mph9 km/h.
Clear	High 82°F28°C	Low 56°F13°C	Precip 0 in0 mm—	Cloud 30%	Wind SW 4 mph7 km/h	Saturday: Partly cloudy and warm, with a high of 82°F28°C and morning low of 60°F15°C. Light wind from the SW around 4 mph7 km/h. Dry air. Saturday Night: Partly cloudy, with a low around 56°F13°C. Light wind from the SW around 4 mph7 km/h.
Clear	High 79°F26°C	Low 56°F13°C	Precip 0 in0 mm—	Cloud 39%	Wind SW 5 mph9 km/h	Sunday: Partly cloudy and warm, with a high of 79°F26°C and morning low of 57°F14°C. Breezy from the SW at 6 to 7 mph9 to 11 km/h. Dry air. Sunday Night: Partly cloudy, with a low around 56°F13°C. Light wind from the SW around 5 mph8 km/h.
Clear	High 83°F28°C	Low 56°F13°C	Precip 0 in0.1 mm3%	Cloud 22%	Wind WSW 4 mph7 km/h	Monday: Mostly clear and warm, with a high of 83°F28°C and morning low of 59°F15°C. Light wind from the W around 4 mph7 km/h. Dry air. Monday Night: Mostly clear, with a low around 56°F13°C. Light wind from the WSW around 4 mph7 km/h.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	TuesdaySep 22	79°F26°C	58°F14°C	0 in0 mm· —	27%	Clear	SW 5 mph8 km/h
DayMostly clear and warm, with a high of 79°F26°C and morning low of 59°F15°C. Light wind from the SW around 5 mph7 km/h. NightPartly cloudy, with a low around 58°F14°C. Light wind from the SW around 5 mph8 km/h.
	WednesdaySep 23	89°F32°C	57°F14°C	0 in0 mm· —	34%	Clear	WSW 3 mph5 km/h
DayPartly cloudy and hot, with a high of 89°F32°C and morning low of 59°F15°C. Light wind from the NNE around 2 mph3 km/h. NightPartly cloudy, with a low around 57°F14°C. Light wind from the WSW around 4 mph6 km/h.
	ThursdaySep 24	88°F31°C	60°F16°C	0 in0 mm· —	49%	Partly Cloudy	SW 5 mph9 km/h
DayMostly cloudy and hot, with a high of 88°F31°C and morning low of 62°F17°C. Breezy from the SW at 5 to 9 mph9 to 15 km/h. NightPartly cloudy, with a low around 60°F16°C. Breezy from the SW at 5 to 7 mph8 to 12 km/h.
	FridaySep 25	83°F28°C	61°F16°C	0 in0 mm· —	25%	Clear	SW 6 mph10 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 7 to 8 mph11 to 14 km/h. NightPartly cloudy, with a low around 61°F16°C. Light wind from the SW around 6 mph9 km/h.
	SaturdaySep 26	82°F28°C	56°F13°C	0 in0 mm· —	30%	Clear	SW 4 mph7 km/h
DayPartly cloudy and warm, with a high of 82°F28°C and morning low of 60°F15°C. Light wind from the SW around 4 mph7 km/h. Dry air. NightPartly cloudy, with a low around 56°F13°C. Light wind from the SW around 4 mph7 km/h.
	SundaySep 27	79°F26°C	56°F13°C	0 in0 mm· —	39%	Clear	SW 5 mph9 km/h
DayPartly cloudy and warm, with a high of 79°F26°C and morning low of 57°F14°C. Breezy from the SW at 6 to 7 mph9 to 11 km/h. Dry air. NightPartly cloudy, with a low around 56°F13°C. Light wind from the SW around 5 mph8 km/h.
	MondaySep 28	83°F28°C	56°F13°C	0 in0.1 mm· 3%	22%	Clear	WSW 4 mph7 km/h
DayMostly clear and warm, with a high of 83°F28°C and morning low of 59°F15°C. Light wind from the W around 4 mph7 km/h. Dry air. NightMostly clear, with a low around 56°F13°C. Light wind from the WSW around 4 mph7 km/h.
	TuesdaySep 29	83°F29°C	58°F14°C	0.02 in0.4 mm· 6%	21%	Clear	WSW 4 mph7 km/h
DayMostly clear and warm, with a high of 83°F29°C and morning low of 59°F15°C. Light wind from the WSW around 4 mph7 km/h. Dry air. NightMostly clear, with a low around 58°F14°C. Light wind from the WSW around 4 mph7 km/h.
	WednesdaySep 30	82°F28°C	58°F15°C	0.04 in1.1 mm· 7%	26%	Clear	SW 5 mph7 km/h
DayPartly cloudy and warm, with a high of 82°F28°C and morning low of 59°F15°C. Light wind from the SW around 5 mph7 km/h. NightMostly clear, with a low around 58°F15°C. Light wind from the SW around 5 mph7 km/h.
	ThursdayOct 1	81°F27°C	58°F15°C	0.03 in0.7 mm· 5%	35%	Clear	WSW 5 mph8 km/h
DayPartly cloudy and warm, with a high of 81°F27°C and morning low of 59°F15°C. Light wind from the WSW around 5 mph8 km/h. Dry air. NightPartly cloudy, with a low around 58°F15°C. Light wind from the WSW around 5 mph8 km/h.
	FridayOct 2	81°F27°C	58°F15°C	0.05 in1.3 mm· 7%	22%	Clear	W 5 mph9 km/h
DayMostly clear and warm, with a high of 81°F27°C and morning low of 60°F15°C. Light wind from the W around 6 mph9 km/h. Dry air. NightMostly clear, with a low around 58°F15°C. Light wind from the WSW around 5 mph8 km/h.
	SaturdayOct 3	82°F28°C	59°F15°C	0.04 in1.1 mm· 8%	19%	Clear	W 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 WNW 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.
	SundayOct 4	82°F28°C	58°F14°C	0.02 in0.5 mm· 4%	22%	Clear	WSW 5 mph8 km/h
DayMostly clear and warm, with a high of 82°F28°C and morning low of 59°F15°C. Light wind from the WSW around 5 mph7 km/h. Dry air. NightMostly clear, with a low around 58°F14°C. Light wind from the WSW around 5 mph8 km/h.
	MondayOct 5	81°F27°C	59°F15°C	0.01 in0.3 mm· 4%	22%	Clear	WSW 5 mph8 km/h
DayMostly clear and warm, with a high of 81°F27°C and morning low of 60°F16°C. Light wind from the WSW 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.
	TuesdayOct 6	81°F27°C	58°F15°C	0.02 in0.4 mm· 5%	23%	Clear	W 5 mph8 km/h
DayMostly clear and warm, with a high of 81°F27°C and morning low of 59°F15°C. Light wind from the W around 5 mph8 km/h. Dry air. NightMostly clear, with a low around 58°F15°C. Light wind from the WSW around 4 mph7 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