Current Conditions

Upland, California

78°F26°C

Clear

Wind

SW 7 mph12 km/h

Humidity

40%

Cloud Cover

As of Thursday, September 3, 2026 at 4:24 PM PDT

Today's Outlook

Day

Mostly clear and warm, with a high of 80°F27°C and morning low of 75°F24°C. Breezy from the SSW at 6 to 7 mph10 to 12 km/h. Dry air.

Night

Mostly clear, with a low around 65°F19°C. Light wind from the SSW around 3 mph5 km/h.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Clear	High 80°F27°C	Low 65°F19°C	Precip 0 in0 mm—	Cloud 1%	Wind SSW 5 mph8 km/h	Thursday: Mostly clear and warm, with a high of 80°F27°C and morning low of 75°F24°C. Breezy from the SSW at 6 to 7 mph10 to 12 km/h. Dry air. Thursday Night: Mostly clear, with a low around 65°F19°C. Light wind from the SSW around 3 mph5 km/h.
Clear	High 81°F27°C	Low 61°F16°C	Precip 0 in0 mm—	Cloud 10%	Wind SSW 3 mph5 km/h	Friday: Mostly clear and warm, with a high of 81°F27°C and morning low of 65°F18°C. Breezy from the SSW at 5 to 7 mph8 to 11 km/h. Friday Night: Mostly clear, with a low around 61°F16°C. Light wind from the SSW around 2 mph3 km/h.
Clear	High 86°F30°C	Low 61°F16°C	Precip 0 in0 mm—	Cloud 8%	Wind SSW 3 mph5 km/h	Saturday: Mostly clear and hot, with a high of 86°F30°C and morning low of 67°F20°C. Breezy from the SSW at 5 to 7 mph8 to 11 km/h. Dry air. Saturday Night: Mostly clear, with a low around 61°F16°C. Light wind from the SSW around 2 mph3 km/h.
Rain	High 77°F25°C	Low 68°F20°C	Precip 0.37 in9.4 mm80%	Cloud 51%	Wind SSW 2 mph4 km/h	Sunday: Mostly cloudy and warm, with a high of 77°F25°C and morning low of 68°F20°C. Light wind from the SSW around 3 mph5 km/h. 80% chance of rain throughout the day. Sunday Night: Partly cloudy, with a low around 68°F20°C. Light wind from the WSW around 2 mph3 km/h. 49% chance of showers throughout the night.
Clear	High 86°F30°C	Low 65°F18°C	Precip 0.02 in0.4 mm5%	Cloud 14%	Wind SW 3 mph5 km/h	Monday: Mostly clear and hot, with a high of 86°F30°C and morning low of 69°F21°C. Light wind from the SW around 4 mph7 km/h. Monday Night: Mostly clear, with a low around 65°F18°C. Light wind from the WSW around 2 mph3 km/h.
Clear	High 90°F32°C	Low 66°F19°C	Precip 0 in0.1 mm4%	Cloud 31%	Wind WSW 3 mph4 km/h	Tuesday: Partly cloudy and hot, with a high of 90°F32°C and morning low of 72°F22°C. Light wind from the SW around 4 mph6 km/h. Tuesday Night: Partly cloudy, with a low around 66°F19°C. Light wind from the NNW around 2 mph3 km/h.
Clear	High 93°F34°C	Low 70°F21°C	Precip 0.02 in0.4 mm8%	Cloud 28%	Wind SW 3 mph5 km/h	Wednesday: Partly cloudy and hot, with a high of 93°F34°C and morning low of 75°F24°C. Light wind from the SW around 4 mph6 km/h. Wednesday Night: Partly cloudy, with a low around 70°F21°C. Light wind from the NNW around 2 mph3 km/h.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	ThursdaySep 3	80°F27°C	65°F19°C	0 in0 mm· —	1%	Clear	SSW 5 mph8 km/h
DayMostly clear and warm, with a high of 80°F27°C and morning low of 75°F24°C. Breezy from the SSW at 6 to 7 mph10 to 12 km/h. Dry air. NightMostly clear, with a low around 65°F19°C. Light wind from the SSW around 3 mph5 km/h.
	FridaySep 4	81°F27°C	61°F16°C	0 in0 mm· —	10%	Clear	SSW 3 mph5 km/h
DayMostly clear and warm, with a high of 81°F27°C and morning low of 65°F18°C. Breezy from the SSW at 5 to 7 mph8 to 11 km/h. NightMostly clear, with a low around 61°F16°C. Light wind from the SSW around 2 mph3 km/h.
	SaturdaySep 5	86°F30°C	61°F16°C	0 in0 mm· —	8%	Clear	SSW 3 mph5 km/h
DayMostly clear and hot, with a high of 86°F30°C and morning low of 67°F20°C. Breezy from the SSW at 5 to 7 mph8 to 11 km/h. Dry air. NightMostly clear, with a low around 61°F16°C. Light wind from the SSW around 2 mph3 km/h.
	SundaySep 6	77°F25°C	68°F20°C	0.37 in9.4 mm· 80%	51%	Rain	SSW 2 mph4 km/h
DayMostly cloudy and warm, with a high of 77°F25°C and morning low of 68°F20°C. Light wind from the SSW around 3 mph5 km/h. 80% chance of rain throughout the day. NightPartly cloudy, with a low around 68°F20°C. Light wind from the WSW around 2 mph3 km/h. 49% chance of showers throughout the night.
	MondaySep 7	86°F30°C	65°F18°C	0.02 in0.4 mm· 5%	14%	Clear	SW 3 mph5 km/h
DayMostly clear and hot, with a high of 86°F30°C and morning low of 69°F21°C. Light wind from the SW around 4 mph7 km/h. NightMostly clear, with a low around 65°F18°C. Light wind from the WSW around 2 mph3 km/h.
	TuesdaySep 8	90°F32°C	66°F19°C	0 in0.1 mm· 4%	31%	Clear	WSW 3 mph4 km/h
DayPartly cloudy and hot, with a high of 90°F32°C and morning low of 72°F22°C. Light wind from the SW around 4 mph6 km/h. NightPartly cloudy, with a low around 66°F19°C. Light wind from the NNW around 2 mph3 km/h.
	WednesdaySep 9	93°F34°C	70°F21°C	0.02 in0.4 mm· 8%	28%	Clear	SW 3 mph5 km/h
DayPartly cloudy and hot, with a high of 93°F34°C and morning low of 75°F24°C. Light wind from the SW around 4 mph6 km/h. NightPartly cloudy, with a low around 70°F21°C. Light wind from the NNW around 2 mph3 km/h.
	ThursdaySep 10	92°F33°C	71°F22°C	0.01 in0.2 mm· 7%	18%	Clear	SW 3 mph5 km/h
DayMostly clear and hot, with a high of 92°F33°C and morning low of 77°F25°C. Light wind from the SW around 4 mph7 km/h. NightMostly clear, with a low around 71°F22°C. Light wind from the SSW around 2 mph3 km/h.
	FridaySep 11	89°F32°C	70°F21°C	0 in0.1 mm· 6%	17%	Clear	SW 3 mph5 km/h
DayMostly clear and hot, with a high of 89°F32°C and morning low of 74°F23°C. Light wind from the SW around 5 mph7 km/h. NightMostly clear, with a low around 70°F21°C. Light wind from the SSW around 2 mph3 km/h.
	SaturdaySep 12	86°F30°C	68°F20°C	0.03 in0.7 mm· 5%	24%	Clear	SW 3 mph6 km/h
DayMostly clear and warm, with a high of 86°F30°C and morning low of 72°F22°C. Light wind from the SW around 5 mph8 km/h. NightPartly cloudy, with a low around 68°F20°C. Light wind from the SSW around 2 mph3 km/h.
	SundaySep 13	86°F30°C	67°F20°C	0.03 in0.8 mm· 4%	29%	Clear	SW 3 mph5 km/h
DayPartly cloudy and hot, with a high of 86°F30°C and morning low of 71°F22°C. Light wind from the SW around 4 mph7 km/h. NightPartly cloudy, with a low around 67°F20°C. Light wind from the SW around 2 mph3 km/h.
	MondaySep 14	87°F31°C	67°F19°C	0.03 in0.8 mm· 6%	25%	Clear	SW 3 mph5 km/h
DayPartly cloudy and hot, with a high of 87°F31°C and morning low of 72°F22°C. Light wind from the SW around 4 mph7 km/h. NightPartly cloudy, with a low around 67°F19°C. Light wind from the SW around 2 mph3 km/h.
	TuesdaySep 15	88°F31°C	68°F20°C	0.02 in0.4 mm· 7%	22%	Clear	SW 3 mph5 km/h
DayMostly clear and hot, with a high of 88°F31°C and morning low of 71°F22°C. Light wind from the SSW around 4 mph7 km/h. NightMostly clear, with a low around 68°F20°C. Light wind from the SW around 2 mph3 km/h.
	WednesdaySep 16	88°F31°C	68°F20°C	0.03 in0.7 mm· 9%	21%	Clear	SW 3 mph5 km/h
DayMostly clear and hot, with a high of 88°F31°C and morning low of 72°F22°C. Light wind from the SW around 4 mph7 km/h. NightMostly clear, with a low around 68°F20°C. Light wind from the WSW around 2 mph3 km/h.
	ThursdaySep 17	89°F32°C	68°F20°C	0.01 in0.2 mm· 8%	26%	Clear	SW 3 mph5 km/h
DayPartly cloudy and hot, with a high of 89°F32°C and morning low of 72°F22°C. Light wind from the SW around 4 mph6 km/h. NightPartly cloudy, with a low around 68°F20°C. Light wind from the WSW around 2 mph3 km/h.

Nearby Cities

Ontario2 mi4 km Montclair3 mi4 km Rancho Cucamonga3 mi5 km Claremont4 mi7 km Chino6 mi10 km Pomona7 mi11 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: 34.0975°N, 117.6484°W·Elevation: 377m·Timezone: America/Los_Angeles·Population: 76,443