Climate normals · 1970–2000
Rancho Cucamonga Climate
Rancho Cucamonga is a city in United States (CA) with a population of about 175,236. Its average annual temperature is 17.5°C (64°F), with roughly 386 mm of rain per year.
17.5°C
Avg Temp
386
Precip (mm/yr)
Aug
Hottest Month
Dec
Coldest Month
Rancho Cucamonga Climate
Rancho Cucamonga has an average annual temperature of 17.5°C (64°F) and receives about 386 mm of precipitation per year. The warmest month is August and the coldest is December. Figures are 1970–2000 climate normals.
17.5°C
Avg Temp
386
Precip (mm/yr)
Aug
Hottest Month
Dec
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | 12° / 53° | 76 mm |
| February | 13° / 55° | 80 mm |
| March | 13° / 56° | 72 mm |
| April | 16° / 60° | 29 mm |
| May | 18° / 64° | 9 mm |
| June | 21° / 70° | 1 mm |
| July | 24° / 76° | 2 mm |
| August | 25° / 76° | 4 mm |
| September | 23° / 73° | 9 mm |
| October | 19° / 66° | 10 mm |
| November | 15° / 58° | 42 mm |
| December | 12° / 53° | 52 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Rancho Cucamonga
The most comfortable months to visit Rancho Cucamonga are typically June, September and October, when temperatures are mildest and rainfall is relatively low. The hottest month is August (around 33°C high). The coldest is December (near 4°C low). February is usually the wettest month.
Where to stay near Rancho Cucamonga
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Frequently Asked Questions
The most comfortable months to visit Rancho Cucamonga are typically June, September and October, when temperatures are mildest and rainfall is relatively low (1970–2000 climate normals).
Rancho Cucamonga, United States has an average annual temperature of 17.5°C and about 386 mm of precipitation per year. The warmest month is August and the coldest is December.
In August, the hottest month, daily highs in Rancho Cucamonga average about 33°C (92°F).
Monthly climate normals (1970–2000) sampled from WorldClim 2.1 at ~9 km resolution. Humidity derived from vapor pressure. City coordinates and population from GeoNames.