Weather in Rancho Cucamonga
Current conditions, today's hourly forecast, and a 3-day outlook for Rancho Cucamonga, United States (America/Los_Angeles). Data from WeatherAPI.com.
- High / Low
- 17° / 37°
- Wind
- 4 km/h W
- Humidity
- 88%
- Rain today
- 2%
- UV
- 0
Active alerts
- Heat Advisory Moderate
Heat Advisory issued July 28 at 9:01PM PDT until August 2 at 8:00PM PDT by NWS San Diego CA
Areas: San Bernardino County Mountains
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* WHAT...High temperatures in the 90s to around 100 below 7000 feet expected. * WHERE...San Bernardino County Mountains. * WHEN...From 10 AM Thursday to 8 PM PDT Sunday. * IMPACTS...Hot temperatures may cause heat illnesses.
- Extreme Heat Warning Severe
Extreme Heat Warning issued July 28 at 9:01PM PDT until August 2 at 8:00PM PDT by NWS San Diego CA
Areas: Apple and Lucerne Valleys
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* WHAT...Dangerously hot conditions with temperatures of 105 to 112 expected. * WHERE...Apple and Lucerne Valleys. * WHEN...From 10 AM Thursday to 8 PM PDT Sunday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.
- Extreme Heat Warning Severe
Extreme Heat Warning issued July 28 at 9:01PM PDT until August 2 at 8:00PM PDT by NWS San Diego CA
Areas: San Bernardino and Riverside County Valleys-The Inland Empire
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* WHAT...Dangerously hot conditions with temperatures up to 110 expected. * WHERE...San Bernardino and Riverside County Valleys-The Inland Empire. * WHEN...From 10 AM Thursday to 8 PM PDT Sunday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.
- Extreme Heat Warning Severe
Extreme Heat Warning issued July 28 at 9:01PM PDT until August 2 at 8:00PM PDT by NWS San Diego CA
Areas: Riverside County Mountains
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* WHAT...Dangerously hot conditions with high temperatures in the mid 90s to 105 below 7000 feet expected. * WHERE...Riverside County Mountains. * WHEN...From 10 AM Thursday to 8 PM PDT Sunday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.
- Extreme Heat Warning Severe
Extreme Heat Warning issued July 28 at 9:01PM PDT until August 2 at 8:00PM PDT by NWS San Diego CA
Areas: Coachella Valley; San Diego County Deserts; San Gorgonio Pass Near Banning
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* WHAT...Dangerously hot conditions with temperatures of 115 to 120 expected. * WHERE...Coachella Valley, San Diego County Deserts, and San Gorgonio Pass near Banning. * WHEN...From 10 AM Thursday to 8 PM PDT Sunday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.
Today, hour by hour
- 08:00
21° 10% - 09:00 24° 4%
- 10:00 27° 2%
- 11:00 33° 1%
- 12:00 36° 0%
- 13:00 37° 0%
- 14:00 35° 0%
- 15:00 35° 0%
3-day outlook
- Wed 29 Jul Sunny Rain 2% 17° / 37°
- Thu 30 Jul Sunny Rain 0% 20° / 37°
- Fri 31 Jul Sunny Rain 0% 22° / 38°