Weather in Rancho Cucamonga, California
Saturday 21 November 2026
20°
Overcast
Feels like 17°
- High
- 20°
- Low
- 14°
- Humidity
- 43%
- Wind
- 11 km/h
Temperature and rain / Rancho Cucamonga
The coming days
High
23°
Low
12°
Average high
19.3°
Average low
13.5°
Total rain
24.8 mm
Average rain
1.7 mm
Air quality - Rancho Cucamonga
Particles and ozone
Good
8.70 µg/m³
0-1212-3535-5555+
The air is clean: enjoy the outdoors.
PM1012.90µg/m³
Ozone96µg/m³
Data updated hourly
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Frequently asked questions
Quick answers about the weather in Rancho Cucamonga
Tomorrow in Rancho Cucamonga, expect Overcast ☁️, with:\n\n- High of 21°\n- Low of 12°
Need more information?
Our data is updated regularly to give you the most reliable forecast.
Last updated: 2026-11-15