Current Conditions

Bostonia, California

66°F19°C

Clear

Wind

WNW 3 mph4 km/h

Humidity

80%

Cloud Cover

45%

As of Monday, September 21, 2026 at 10:45 PM PDT

Today's Outlook

Night

Partly cloudy, with a low around 63°F17°C. Light wind from the NW around 3 mph5 km/h.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Clear	High 79°F26°C	Low 63°F17°C	Precip 0 in0 mm—	Cloud 25%	Wind WNW 5 mph8 km/h	Tuesday: Mostly clear and warm, with a high of 79°F26°C and morning low of 65°F18°C. Breezy from the WNW at 7 to 10 mph11 to 16 km/h. Tuesday Night: Partly cloudy, with a low around 63°F17°C. Light wind from the NW around 3 mph5 km/h.
Clear	High 82°F28°C	Low 64°F18°C	Precip 0 in0 mm—	Cloud 14%	Wind W 4 mph6 km/h	Wednesday: Mostly clear and warm, with a high of 82°F28°C and morning low of 68°F20°C. Breezy from the W at 6 to 9 mph9 to 14 km/h. Wednesday Night: Mostly clear, with a low around 64°F18°C. Light wind from the NW around 2 mph4 km/h.
Clear	High 83°F28°C	Low 67°F19°C	Precip 0 in0 mm—	Cloud 17%	Wind WNW 4 mph6 km/h	Thursday: Mostly clear and warm, with a high of 83°F28°C and morning low of 71°F21°C. Breezy from the W at 5 to 8 mph9 to 13 km/h. Thursday Night: Mostly clear, with a low around 67°F19°C. Light wind from the NW around 2 mph3 km/h.
Clear	High 85°F30°C	Low 67°F20°C	Precip 0 in0 mm—	Cloud 39%	Wind WNW 4 mph6 km/h	Friday: Partly cloudy and warm, with a high of 85°F30°C and morning low of 71°F22°C. Breezy from the WNW at 6 to 9 mph10 to 15 km/h. Friday Night: Partly cloudy, with a low around 67°F20°C. Light wind from the NNW around 2 mph3 km/h.
Partly Cloudy	High 87°F30°C	Low 67°F20°C	Precip 0 in0 mm—	Cloud 76%	Wind W 4 mph6 km/h	Saturday: Mostly cloudy and hot, with a high of 87°F30°C and morning low of 72°F22°C. Breezy from the W at 5 to 9 mph9 to 14 km/h. Saturday Night: Mostly cloudy, with a low around 67°F20°C. Light wind from the NW around 2 mph3 km/h.
Drizzle	High 80°F27°C	Low 69°F21°C	Precip 0.07 in1.8 mm21%	Cloud 75%	Wind W 4 mph6 km/h	Sunday: Mostly cloudy and warm, with a high of 80°F27°C and morning low of 71°F22°C. Breezy from the WSW at 5 to 7 mph8 to 11 km/h. 21% chance of drizzle throughout the day. Sunday Night: Mostly cloudy, with a low around 69°F21°C. Light wind from the NNW around 2 mph4 km/h. 13% chance of drizzle in the evening.
Showers	High 79°F26°C	Low 68°F20°C	Precip 0.13 in3.2 mm23%	Cloud 55%	Wind WNW 4 mph7 km/h	Monday: Mostly cloudy and warm, with a high of 79°F26°C and morning low of 71°F22°C. Breezy from the W at 6 to 8 mph9 to 12 km/h. 23% chance of showers throughout the day. Monday Night: Mostly cloudy, with a low around 68°F20°C. Light wind from the NNW around 3 mph5 km/h. 19% chance of drizzle throughout the night.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	TuesdaySep 22	79°F26°C	63°F17°C	0 in0 mm· —	25%	Clear	WNW 5 mph8 km/h
DayMostly clear and warm, with a high of 79°F26°C and morning low of 65°F18°C. Breezy from the WNW at 7 to 10 mph11 to 16 km/h. NightPartly cloudy, with a low around 63°F17°C. Light wind from the NW around 3 mph5 km/h.
	WednesdaySep 23	82°F28°C	64°F18°C	0 in0 mm· —	14%	Clear	W 4 mph6 km/h
DayMostly clear and warm, with a high of 82°F28°C and morning low of 68°F20°C. Breezy from the W at 6 to 9 mph9 to 14 km/h. NightMostly clear, with a low around 64°F18°C. Light wind from the NW around 2 mph4 km/h.
	ThursdaySep 24	83°F28°C	67°F19°C	0 in0 mm· —	17%	Clear	WNW 4 mph6 km/h
DayMostly clear and warm, with a high of 83°F28°C and morning low of 71°F21°C. Breezy from the W at 5 to 8 mph9 to 13 km/h. NightMostly clear, with a low around 67°F19°C. Light wind from the NW around 2 mph3 km/h.
	FridaySep 25	85°F30°C	67°F20°C	0 in0 mm· —	39%	Clear	WNW 4 mph6 km/h
DayPartly cloudy and warm, with a high of 85°F30°C and morning low of 71°F22°C. Breezy from the WNW at 6 to 9 mph10 to 15 km/h. NightPartly cloudy, with a low around 67°F20°C. Light wind from the NNW around 2 mph3 km/h.
	SaturdaySep 26	87°F30°C	67°F20°C	0 in0 mm· —	76%	Partly Cloudy	W 4 mph6 km/h
DayMostly cloudy and hot, with a high of 87°F30°C and morning low of 72°F22°C. Breezy from the W at 5 to 9 mph9 to 14 km/h. NightMostly cloudy, with a low around 67°F20°C. Light wind from the NW around 2 mph3 km/h.
	SundaySep 27	80°F27°C	69°F21°C	0.07 in1.8 mm· 21%	75%	Drizzle	W 4 mph6 km/h
DayMostly cloudy and warm, with a high of 80°F27°C and morning low of 71°F22°C. Breezy from the WSW at 5 to 7 mph8 to 11 km/h. 21% chance of drizzle throughout the day. NightMostly cloudy, with a low around 69°F21°C. Light wind from the NNW around 2 mph4 km/h. 13% chance of drizzle in the evening.
	MondaySep 28	79°F26°C	68°F20°C	0.13 in3.2 mm· 23%	55%	Showers	WNW 4 mph7 km/h
DayMostly cloudy and warm, with a high of 79°F26°C and morning low of 71°F22°C. Breezy from the W at 6 to 8 mph9 to 12 km/h. 23% chance of showers throughout the day. NightMostly cloudy, with a low around 68°F20°C. Light wind from the NNW around 3 mph5 km/h. 19% chance of drizzle throughout the night.
	TuesdaySep 29	83°F28°C	66°F19°C	0.11 in2.8 mm· 18%	34%	Drizzle	WNW 4 mph7 km/h
DayPartly cloudy and warm, with a high of 83°F28°C and morning low of 69°F20°C. Breezy from the WNW at 5 to 7 mph9 to 12 km/h. 18% chance of drizzle throughout the day. NightPartly cloudy, with a low around 66°F19°C. Light wind from the N around 3 mph5 km/h. 18% chance of drizzle throughout the night.
	WednesdaySep 30	85°F29°C	67°F19°C	0.07 in1.9 mm· 11%	30%	Drizzle	NW 4 mph7 km/h
DayPartly cloudy and warm, with a high of 85°F29°C and morning low of 70°F21°C. Breezy from the WNW at 6 to 8 mph9 to 12 km/h. 11% chance of drizzle throughout the day. NightPartly cloudy, with a low around 67°F19°C. Light wind from the NNE around 3 mph5 km/h. 11% chance of drizzle throughout the night.
	ThursdayOct 1	84°F29°C	68°F20°C	0.04 in1.1 mm· 10%	32%	Drizzle	W 5 mph7 km/h
DayPartly cloudy and warm, with a high of 84°F29°C and morning low of 71°F22°C. Breezy from the W at 6 to 8 mph10 to 13 km/h. 10% chance of drizzle throughout the day. NightPartly cloudy, with a low around 68°F20°C. Light wind from the NNE around 3 mph5 km/h.
	FridayOct 2	82°F28°C	67°F19°C	0.03 in0.8 mm· 13%	30%	Drizzle	W 5 mph7 km/h
DayPartly cloudy and warm, with a high of 82°F28°C and morning low of 69°F21°C. Breezy from the W at 6 to 8 mph10 to 13 km/h. 11% chance of drizzle in the morning. NightPartly cloudy, with a low around 67°F19°C. Light wind from the NW around 3 mph5 km/h. 13% chance of drizzle overnight.
	SaturdayOct 3	83°F28°C	65°F18°C	0.03 in0.7 mm· 8%	22%	Clear	WNW 4 mph7 km/h
DayMostly clear and warm, with a high of 83°F28°C and morning low of 68°F20°C. Breezy from the W at 6 to 7 mph9 to 12 km/h. NightMostly clear, with a low around 65°F18°C. Light wind from the N around 3 mph5 km/h.
	SundayOct 4	83°F28°C	65°F18°C	0.02 in0.6 mm· 4%	23%	Clear	WNW 4 mph7 km/h
DayMostly clear and warm, with a high of 83°F28°C and morning low of 68°F20°C. Breezy from the W at 5 to 7 mph9 to 12 km/h. NightPartly cloudy, with a low around 65°F18°C. Light wind from the NE around 3 mph5 km/h.
	MondayOct 5	83°F28°C	65°F18°C	0.02 in0.4 mm· 4%	21%	Clear	WNW 4 mph7 km/h
DayMostly clear and warm, with a high of 83°F28°C and morning low of 68°F20°C. Breezy from the W at 5 to 8 mph9 to 12 km/h. NightMostly clear, with a low around 65°F18°C. Light wind from the NNE around 3 mph5 km/h.
	TuesdayOct 6	84°F29°C	65°F18°C	0.02 in0.5 mm· 6%	19%	Clear	WNW 5 mph8 km/h
DayMostly clear and warm, with a high of 84°F29°C and morning low of 68°F20°C. Breezy from the W at 6 to 8 mph9 to 12 km/h. NightMostly clear, with a low around 65°F18°C. Light wind from the ENE around 3 mph5 km/h.

Nearby Cities

Winter Gardens2 mi3 km El Cajon2 mi3 km Santee3 mi5 km Lakeside4 mi6 km Casa de Oro-Mount Helix4 mi6 km Rancho San Diego4 mi7 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.

WeatherMesh consistently outperforms legacy models in independent benchmarks. View Benchmarks →

Access WeatherMesh forecasts programmatically via our API. API Documentation →

How to Access Weather Forecasts

Pattern	Example	Description
/weather/{country}/{city}/	/weather/united-states/san-francisco/	City forecast (canonical URL)
/weather/{city}/	/weather/tokyo/	Shorthand — redirects to most populous match
/weather/{country}/{region}/{city}/	/weather/united-states/california/san-francisco/	With region — redirects to canonical
/weather/nearby?lat={lat}&lon={lon}	/weather/nearby?lat=48.1&lon=11.5	Find nearest city by coordinates
/weather/{country}/	/weather/germany/	Country index — all cities by region

Country and city names use lowercase slugs with hyphens (e.g. united-states, san-francisco). Arbitrary city names are supported — if not in our database, we geocode the name and serve the forecast for that location.

For programmatic access, use theWindBorne Forecast APIwhich returns structured JSON for any coordinates worldwide.

Coordinates: 32.8075°N, 116.9364°W·Elevation: 148m·Timezone: America/Los_Angeles·Population: 15,379