Current Conditions

Rialto, California

77°F25°C

Drizzle

Wind

NE 2 mph4 km/h

Humidity

64%

Cloud Cover

30%

As of Tuesday, September 8, 2026 at 9:30 PM PDT

Today's Outlook

Night

Partly cloudy, with a low around 72°F22°C. Light wind from the NE around 3 mph4 km/h.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Drizzle	High 97°F36°C	Low 72°F22°C	Precip 0.01 in0.3 mm28%	Cloud 30%	Wind N 3 mph5 km/h	Wednesday: Partly cloudy and hot, with a high of 97°F36°C and morning low of 78°F26°C. Light wind from the NNW around 3 mph5 km/h. 28% chance of drizzle in the afternoon. Heat risk in the afternoon. Wednesday Night: Partly cloudy, with a low around 72°F22°C. Light wind from the NE around 3 mph4 km/h.
Drizzle	High 94°F34°C	Low 75°F24°C	Precip 0.01 in0.3 mm27%	Cloud 24%	Wind SW 3 mph5 km/h	Thursday: Partly cloudy and hot, with a high of 94°F34°C and morning low of 80°F26°C. Light wind from the SW around 4 mph6 km/h. 27% chance of drizzle in the afternoon. Thursday Night: Mostly clear, with a low around 75°F24°C. Light wind from the SSE around 2 mph4 km/h.
Clear	High 88°F31°C	Low 72°F22°C	Precip 0 in0 mm—	Cloud 5%	Wind SSW 3 mph5 km/h	Friday: Mostly clear and hot, with a high of 88°F31°C and morning low of 76°F25°C. Light wind from the SW around 5 mph7 km/h. Friday Night: Mostly clear, with a low around 72°F22°C. Light wind from the S around 2 mph3 km/h.
Clear	High 87°F30°C	Low 69°F21°C	Precip 0 in0 mm—	Cloud 6%	Wind SSW 3 mph5 km/h	Saturday: Mostly clear and hot, with a high of 87°F30°C and morning low of 73°F23°C. Light wind from the SSW around 5 mph7 km/h. Saturday Night: Mostly clear, with a low around 69°F21°C. Light wind from the S around 2 mph3 km/h.
Clear	High 85°F30°C	Low 66°F19°C	Precip 0 in0 mm—	Cloud 8%	Wind SSW 3 mph5 km/h	Sunday: Mostly clear and warm, with a high of 85°F30°C and morning low of 71°F22°C. Light wind from the SW around 4 mph7 km/h. Sunday Night: Mostly clear, with a low around 66°F19°C. Light wind from the S around 2 mph3 km/h.
Clear	High 85°F30°C	Low 65°F18°C	Precip 0 in0 mm—	Cloud 6%	Wind SSW 3 mph5 km/h	Monday: Mostly clear and warm, with a high of 85°F30°C and morning low of 70°F21°C. Light wind from the SSW around 4 mph7 km/h. Monday Night: Mostly clear, with a low around 65°F18°C. Light wind from the S around 2 mph3 km/h.
Clear	High 84°F29°C	Low 63°F17°C	Precip 0 in0 mm—	Cloud 8%	Wind SSW 4 mph6 km/h	Tuesday: Mostly clear and warm, with a high of 84°F29°C and morning low of 69°F20°C. Light wind from the SSW around 5 mph8 km/h. Tuesday Night: Mostly clear, with a low around 63°F17°C. Light wind from the S around 2 mph4 km/h.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	WednesdaySep 9	97°F36°C	72°F22°C	0.01 in0.3 mm· 28%	30%	Drizzle	N 3 mph5 km/h
DayPartly cloudy and hot, with a high of 97°F36°C and morning low of 78°F26°C. Light wind from the NNW around 3 mph5 km/h. 28% chance of drizzle in the afternoon. Heat risk in the afternoon. NightPartly cloudy, with a low around 72°F22°C. Light wind from the NE around 3 mph4 km/h.
	ThursdaySep 10	94°F34°C	75°F24°C	0.01 in0.3 mm· 27%	24%	Drizzle	SW 3 mph5 km/h
DayPartly cloudy and hot, with a high of 94°F34°C and morning low of 80°F26°C. Light wind from the SW around 4 mph6 km/h. 27% chance of drizzle in the afternoon. NightMostly clear, with a low around 75°F24°C. Light wind from the SSE around 2 mph4 km/h.
	FridaySep 11	88°F31°C	72°F22°C	0 in0 mm· —	5%	Clear	SSW 3 mph5 km/h
DayMostly clear and hot, with a high of 88°F31°C and morning low of 76°F25°C. Light wind from the SW around 5 mph7 km/h. NightMostly clear, with a low around 72°F22°C. Light wind from the S around 2 mph3 km/h.
	SaturdaySep 12	87°F30°C	69°F21°C	0 in0 mm· —	6%	Clear	SSW 3 mph5 km/h
DayMostly clear and hot, with a high of 87°F30°C and morning low of 73°F23°C. Light wind from the SSW around 5 mph7 km/h. NightMostly clear, with a low around 69°F21°C. Light wind from the S around 2 mph3 km/h.
	SundaySep 13	85°F30°C	66°F19°C	0 in0 mm· —	8%	Clear	SSW 3 mph5 km/h
DayMostly clear and warm, with a high of 85°F30°C and morning low of 71°F22°C. Light wind from the SW around 4 mph7 km/h. NightMostly clear, with a low around 66°F19°C. Light wind from the S around 2 mph3 km/h.
	MondaySep 14	85°F30°C	65°F18°C	0 in0 mm· —	6%	Clear	SSW 3 mph5 km/h
DayMostly clear and warm, with a high of 85°F30°C and morning low of 70°F21°C. Light wind from the SSW around 4 mph7 km/h. NightMostly clear, with a low around 65°F18°C. Light wind from the S around 2 mph3 km/h.
	TuesdaySep 15	84°F29°C	63°F17°C	0 in0 mm· —	8%	Clear	SSW 4 mph6 km/h
DayMostly clear and warm, with a high of 84°F29°C and morning low of 69°F20°C. Light wind from the SSW around 5 mph8 km/h. NightMostly clear, with a low around 63°F17°C. Light wind from the S around 2 mph4 km/h.
	WednesdaySep 16	84°F29°C	63°F17°C	0 in0 mm· —	15%	Clear	SSW 3 mph5 km/h
DayMostly clear and warm, with a high of 84°F29°C and morning low of 67°F20°C. Light wind from the SSW around 4 mph7 km/h. NightMostly clear, with a low around 63°F17°C. Light wind from the SSW around 2 mph3 km/h.
	ThursdaySep 17	86°F30°C	64°F18°C	0.02 in0.4 mm· 9%	23%	Clear	SW 3 mph5 km/h
DayMostly clear and hot, with a high of 86°F30°C and morning low of 68°F20°C. Light wind from the SW around 4 mph6 km/h. NightMostly clear, with a low around 64°F18°C. Light wind from the SSW around 2 mph3 km/h.
	FridaySep 18	89°F32°C	66°F19°C	0.01 in0.3 mm· 6%	26%	Clear	SW 3 mph5 km/h
DayPartly cloudy and hot, with a high of 89°F32°C and morning low of 70°F21°C. Light wind from the SW around 4 mph6 km/h. NightPartly cloudy, with a low around 66°F19°C. Light wind from the SSE around 2 mph3 km/h.
	SaturdaySep 19	89°F32°C	67°F19°C	0 in0 mm· —	26%	Clear	SW 3 mph5 km/h
DayPartly cloudy and hot, with a high of 89°F32°C and morning low of 71°F22°C. Light wind from the SW around 4 mph7 km/h. Dry air. NightPartly cloudy, with a low around 67°F19°C. Light wind from the SSE around 2 mph3 km/h.
	SundaySep 20	87°F30°C	66°F19°C	0.01 in0.2 mm· 4%	25%	Clear	SSW 3 mph5 km/h
DayPartly cloudy and hot, with a high of 87°F30°C and morning low of 71°F22°C. Light wind from the SW around 5 mph7 km/h. Dry air. NightPartly cloudy, with a low around 66°F19°C. Light wind from the S around 2 mph4 km/h.
	MondaySep 21	84°F29°C	64°F18°C	0.03 in0.7 mm· 6%	20%	Clear	SSW 3 mph5 km/h
DayMostly clear and warm, with a high of 84°F29°C and morning low of 68°F20°C. Light wind from the SW around 4 mph7 km/h. NightMostly clear, with a low around 64°F18°C. Light wind from the S around 2 mph4 km/h.
	TuesdaySep 22	84°F29°C	63°F17°C	0.02 in0.4 mm· 5%	24%	Clear	SSW 3 mph5 km/h
DayMostly clear and warm, with a high of 84°F29°C and morning low of 69°F20°C. Light wind from the SW around 4 mph7 km/h. NightMostly clear, with a low around 63°F17°C. Light wind from the S around 2 mph4 km/h.
	WednesdaySep 23	84°F29°C	63°F17°C	0.01 in0.3 mm· 7%	27%	Clear	SSW 4 mph6 km/h
DayPartly cloudy and warm, with a high of 84°F29°C and morning low of 67°F19°C. Light wind from the SSW around 4 mph7 km/h. Dry air. NightPartly cloudy, with a low around 63°F17°C. Light wind from the E around 2 mph3 km/h.

Nearby Cities

Bloomington3 mi5 km Fontana4 mi6 km Colton4 mi6 km San Bernardino5 mi7 km Loma Linda7 mi12 km Rubidoux8 mi13 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: 34.1064°N, 117.3703°W·Elevation: 383m·Timezone: America/Los_Angeles·Population: 103,132