Rancho Cucamonga, California Weather Forecast

San Bernardino County 34.12°N, 117.57°W Pop. 177,603

Today in Rancho Cucamonga: clear skies with a high near 82°F and a low around 60°F. Rain chance 0%. Best chance of rain is Wednesday at 55%. Highs run 63 to 86°F through Wednesday.

Forecast updated 1:05 PM PDT, Oct 15

Active Weather Alerts

7-Day Forecast for Rancho Cucamonga

Today 10/15

82°/60°

Fri 10/16

86°/66°

Sat 10/17

83°/66°

Sun 10/18

82°/63°

Mon 10/19

79°/63°

Tue 10/20

68°/58°

33%

Wed 10/21

63°/56°

55%

Hourly charts, 15-day outlook and more for Rancho Cucamonga in Local Wx →

Next 24 Hours

	Now	2 PM	3 PM	4 PM	5 PM	6 PM	7 PM	8 PM	9 PM	10 PM	11 PM	Fri12 AM	1 AM	2 AM	3 AM	4 AM	5 AM	6 AM	7 AM	8 AM	9 AM	10 AM	11 AM	12 PM
Sky
Temp	80°	81°	82°	82°	80°	78°	76°	75°	74°	73°	72°	72°	71°	71°	70°	69°	69°	67°	66°	69°	72°	75°	79°	81°
Rain	0%	0%	0%	0%	0%	0%	0%	0%	0%	0%	0%	0%	0%	0%	0%	0%	0%	0%	0%	0%	0%	0%	0%	0%
Wind	NNE 15	N 15	NNE 18	NNE 19	NNE 20	NNE 21	NNE 24	NNE 26	NNE 28	NNE 29	NNE 29	NNE 28	NNE 26	NNE 24	NNE 20	NNE 18	NNE 17	NNE 16	NNE 16	NNE 15	NNE 15	NNE 15	NNE 15	NNE 15

Growing Conditions

Growing degree days

4,498

since Apr 1, base 50°F

Rain, last 30 days

1.13 in

model analysis

Rain, year to date

15.06 in

since Jan 1

2-inch soil temperature

67°F

yesterday, daily average

Reference ET, last 7 days

1.02 in

FAO-56 grass reference

Through Oct 14. Season totals use model analysis for this point and update every morning. Soil, ET and spray tools for Rancho Cucamonga →

Current Stats & Observations

NWS Forecast

About Rancho Cucamonga Weather

Rancho Cucamonga sits at about 1,362 feet above sea level in San Bernardino County, California. About 177,603 people live in the Rancho Cucamonga area. Official forecasts and warnings for the area come from the National Weather Service SGX office, and the nearest NEXRAD radar site is KSOX. The city is in USDA plant hardiness zone 10a, where the coldest winter night typically falls between 30 to 35°F. Freezing temperatures are rare here.

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