Current Conditions

Rancho Cucamonga, California

71°F22°C
Clear

Wind

SW 3 mph5 km/h

Humidity

59%

Cloud Cover

0%

As of Tuesday, September 22, 2026 at 7:53 PM PDT

Today's Outlook

Night

Mostly clear, with a low around 63°F17°C. Light wind from the NNW around 2 mph3 km/h.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
ClearHigh 89°F32°CLow 63°F17°CPrecip 0 in0 mmCloud 3%Wind WSW 3 mph5 km/hWednesday: Mostly clear and hot, with a high of 89°F32°C and morning low of 68°F20°C. Light wind from the WSW around 4 mph6 km/h. Dry air. Wednesday Night: Mostly clear, with a low around 63°F17°C. Light wind from the NNW around 2 mph3 km/h.
ClearHigh 88°F31°CLow 65°F18°CPrecip 0 in0 mmCloud 9%Wind SW 3 mph5 km/hThursday: Mostly clear and hot, with a high of 88°F31°C and morning low of 69°F21°C. Light wind from the SW around 4 mph7 km/h. Thursday Night: Mostly clear, with a low around 65°F18°C. Light wind from the NW around 2 mph3 km/h.
ClearHigh 89°F31°CLow 66°F19°CPrecip 0 in0 mmCloud 33%Wind SW 3 mph4 km/hFriday: Partly cloudy and hot, with a high of 89°F31°C and morning low of 70°F21°C. Light wind from the SW around 4 mph6 km/h. Friday Night: Partly cloudy, with a low around 66°F19°C. Light wind from the WSW around 2 mph2 km/h.
Partly CloudyHigh 88°F31°CLow 66°F19°CPrecip 0 in0 mmCloud 65%Wind SSW 3 mph5 km/hSaturday: Mostly cloudy and hot, with a high of 88°F31°C and morning low of 70°F21°C. Light wind from the SSW around 4 mph7 km/h. Saturday Night: Mostly cloudy, with a low around 66°F19°C. Light wind from the SSW around 2 mph3 km/h.
DrizzleHigh 80°F26°CLow 67°F19°CPrecip 0.07 in1.7 mm14%Cloud 63%Wind SSW 3 mph5 km/hSunday: Mostly cloudy and warm, with a high of 80°F26°C and morning low of 70°F21°C. Light wind from the SSW around 4 mph7 km/h. 14% chance of drizzle throughout the day. Sunday Night: Mostly cloudy, with a low around 67°F19°C. Light wind from the SSW around 2 mph3 km/h.
DrizzleHigh 80°F27°CLow 63°F17°CPrecip 0.05 in1.2 mm12%Cloud 33%Wind SW 3 mph4 km/hMonday: Partly cloudy and warm, with a high of 80°F27°C and morning low of 65°F19°C. Light wind from the SW around 4 mph6 km/h. 12% chance of drizzle throughout the day. Monday Night: Partly cloudy, with a low around 63°F17°C. Light wind from the SW around 2 mph3 km/h. 10% chance of drizzle before dawn.
DrizzleHigh 86°F30°CLow 61°F16°CPrecip 0.04 in0.9 mm12%Cloud 12%Wind NW 3 mph5 km/hTuesday: Mostly clear and warm, with a high of 86°F30°C and morning low of 67°F19°C. Light wind from the WSW around 4 mph6 km/h. Dry air. Tuesday Night: Mostly clear, with a low around 61°F16°C. Light wind from the N around 2 mph4 km/h. 12% chance of drizzle before dawn.

15-Day Forecast

Day High Low Precip Cloud Cover Condition Wind
WednesdaySep 2389°F32°C63°F17°C0 in0 mm· —3%ClearWSW 3 mph5 km/h
ThursdaySep 2488°F31°C65°F18°C0 in0 mm· —9%ClearSW 3 mph5 km/h
FridaySep 2589°F31°C66°F19°C0 in0 mm· —33%ClearSW 3 mph4 km/h
SaturdaySep 2688°F31°C66°F19°C0 in0 mm· —65%Partly CloudySSW 3 mph5 km/h
SundaySep 2780°F26°C67°F19°C0.07 in1.7 mm· 14%63%DrizzleSSW 3 mph5 km/h
MondaySep 2880°F27°C63°F17°C0.05 in1.2 mm· 12%33%DrizzleSW 3 mph4 km/h
TuesdaySep 2986°F30°C61°F16°C0.04 in0.9 mm· 12%12%DrizzleNW 3 mph5 km/h
WednesdaySep 3088°F31°C63°F17°C0.02 in0.5 mm· 4%20%ClearWSW 3 mph5 km/h
ThursdayOct 187°F30°C65°F18°C0.05 in1.2 mm· 8%29%ClearSW 3 mph5 km/h
FridayOct 287°F30°C64°F18°C0.02 in0.6 mm· 7%19%ClearSW 3 mph5 km/h
SaturdayOct 387°F30°C64°F18°C0.02 in0.4 mm· 5%16%ClearNW 3 mph5 km/h
SundayOct 487°F30°C64°F18°C0.02 in0.5 mm· 3%17%ClearWNW 3 mph5 km/h
MondayOct 588°F31°C64°F18°C0.01 in0.3 mm· 4%14%ClearN 3 mph5 km/h
TuesdayOct 689°F32°C65°F18°C0.01 in0.2 mm· 6%13%ClearN 3 mph5 km/h
WednesdayOct 788°F31°C65°F19°C0.02 in0.4 mm· 6%17%ClearNW 4 mph6 km/h

Nearby Cities

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, 117.5931°W·Elevation: 368m·Timezone: America/Los_Angeles·Population: 175,236