Rancho Cucamonga, CA Weather Forecast
San Bernardino County, California
Live radar, warnings and storm tracking for Rancho Cucamonga, with free alerts the moment it counts.
The next few hours
Taller, warmer bars mean heavier rain. Dotted means no reading for that hour.
Hour by hour
Sunrise and sunset
Next five days, scored 0 to 100The first day or two use the HRRR and NBM cloud layers. Later days only have total cloud, so treat them as a rough guide.
Know when sunset at this place will be worth a photo
We score every sunrise and sunset here from the cloud, haze and smoke forecast, and let you know when one is likely to light up. Sunrise the evening before, sunset a few hours ahead.
Seven-day outlook
Free alerts for Rancho Cucamonga
Every NWS warning, pushed to your phone, inbox or webhook the moment it is issued.
Rancho Cucamonga, CA at a glance
Rancho Cucamonga is home to about 174,405 people in San Bernardino County, across 47 square miles. It ranks 28th by population of 450 places in California with a forecast here. The nearest neighbour with its own forecast is Upland, 5 miles away.
- County
- San Bernardino County
- Population
- 174,405 2023 est.
- Land area
- 47 sq mi
- People per sq mi
- 3,750
- Forecast point
- 34.1303°N, 117.5661°W
How well can the network see Rancho Cucamonga?
The nearest Doppler radar is KSOX (Santa Ana Mountains, CA), to the S. Its lowest scan passes about 1,300 ft above Rancho Cucamonga. That is about as close as US radar coverage gets: low-level rotation and gust fronts over Rancho Cucamonga show up clearly. Rancho Cucamonga is closer to its radar than 82% of US cities.
The closest weather station is KONT (Ontario Intl). Representative on most days, though a thunderstorm can hit one and miss the other.
Forecasts near Rancho Cucamonga
- Upland, CA5 mi
- Fontana, CA6 mi
- Ontario, CA7 mi
- Claremont, CA8 mi
- Montclair, CA9 mi
- Rialto, CA10 mi
- Jurupa Valley, CA10 mi
- Eastvale, CA12 mi
Elsewhere in California
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