RANCHO CUCAMONGA, CA 91739 Weather Forecast & Current Conditions

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91739 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
ONTARIO, CA Current Weather
2:53 PM PDT APR 25, 2025
Broken Clouds 63°F
Feels Like:	62°F
Dewpoint:	43°F
Rel. Hum.:	48%
Visibility:	10 miles
Wind:	W at 12 mph, gusts to 22
Pressure:	29.96 inches
Last 72 hours
Local Area Snow Depth
California Current Weather
California MOS Forecast Weather

Regional Weather Maps

(Automated weather data from NWS/FAA)

91739 WEATHER FORECAST
10-Day model forecast maps 2024 Hurricanes	RANCHO CUCAMONGA, CA 91739 Weather Forecast	Snowfall Forecast pages Snow Depth pages

TONIGHT
Mostly cloudy. Patchy fog overnight. Colder. Lows 37 to 47. Areas of winds southwest 10 to 15 mph with gusts to 25 mph...becoming to 10 mph overnight.

SATURDAY
Cloudy with a slight chance of rain in the morning, then mostly cloudy with a chance of rain and a slight chance of thunderstorms in the afternoon. Patchy fog. Highs 57 to 62. Areas of winds south to 10 mph becoming southwest with gusts to 30 mph in the afternoon. Chance of measurable precipitation 50 percent.

SATURDAY NIGHT
Cloudy with a slight chance of rain. Patchy fog. Lows 37 to 46. Areas of winds southwest 10 to 15 mph with gusts to 25 mph in the evening becoming light. Chance of measurable precipitation 20 percent.

SUNDAY
Mostly cloudy in the morning...becoming partly cloudy. Patchy fog. Highs 60 to 65. Areas of winds southwest to 10 mph becoming west with gusts to 25 mph in the afternoon.

SUNDAY NIGHT
Partly cloudy. Patchy fog. Lows 39 to 48. Areas of winds west 10 to 15 mph with gusts to 25 mph in the evening becoming light.

MONDAY
Partly cloudy in the morning...becoming mostly sunny. Warmer. Highs 70 to 74.

MONDAY NIGHT
Mostly clear. Lows 45 to 52.

TUESDAY
Mostly sunny. Highs 77 to 81.

TUESDAY NIGHT
Mostly clear in the evening...becoming partly cloudy overnight with patchy fog. Lows 47 to 54.

WEDNESDAY
Partly cloudy in the morning...becoming mostly sunny. Highs 76 to 79.

WEDNESDAY NIGHT
Mostly clear in the evening...becoming partly cloudy. Lows 47 to 53.

THURSDAY
Partly cloudy with patchy fog in the morning... Becoming mostly sunny. Highs 76 to 80.

THURSDAY NIGHT
Mostly clear. Lows 48 to 54.

91739 WEATHER SATELLITE LOOPS

Visible Weather Satellite
RANCHO CUCAMONGA, CA 91739

Infrared Weather Satellite
RANCHO CUCAMONGA, CA 91739

91739 WEATHER RADAR LOOP

NEXRAD Weather Radar
RANCHO CUCAMONGA, CA 91739

MOS COMPUTER WEATHER FORECAST

ONTARIO, CA 3 hourly weather forecast

weather forecast created 5:00 AM PDT 4/25/2025

DAY/DATE &
WEATHER FORECAST SUMMARY

Friday
25 APR 2025

11 AM

56°

54°

Mostly Cloudy

10%
RAIN
<.01 in

0% Thunder
( 1% severe)

SW 7

69%

46°

High 62°

2 PM

60°

58°

Partly Cloudy

SW 14

55%

44°

Mostly Cloudy

5 PM

61°

59°

Partly Cloudy

0%

0% Thunder
( 0% severe)

WSW 15

50%

42°

8 PM

56°

53°

Mostly Cloudy

WSW 14

59%

42°

Saturday
26 APR 2025

11 PM

53°

50°

Mostly Cloudy

4%

0% Thunder
( 3% severe)

WSW 9

71%

44°

Low 48°

2 AM

51°

49°

Mostly Cloudy

SW 6

77%

44°

High 59°

5 AM

51°

51°

Mostly Cloudy

30%
RAIN
.25–.5 in

0% Thunder
( 4% severe)

S 2

77%

44°

Mostly Cloudy

Chance of Rain

8 AM

51°

50°

Mostly Cloudy

SSE 5

80%

45°

11 AM

53°

50°

Mostly Cloudy

49%
RAIN
***

0% Thunder
( 13% severe)

SSW 8

71%

44°

2 PM

55°

52°

Mostly Cloudy

SW 13

69%

45°

5 PM

56°

53°

Mostly Cloudy

20%
RAIN
.25–.5 in

0% Thunder
( 9% severe)

WSW 13

66%

45°

8 PM

53°

49°

Mostly Cloudy

SW 12

74%

45°

Sunday
27 APR 2025

11 PM

51°

48°

Mostly Cloudy

3%

0% Thunder
( 3% severe)

WSW 7

80%

45°

Low 47°

2 AM

50°

49°

Mostly Cloudy

SW 3

83%

45°

High 63°

5 AM

49°

49°

Mostly Cloudy

1%

0% Thunder
( 2% severe)

SSW 1

86%

45°

Mostly Cloudy

8 AM

51°

51°

Mostly Cloudy

SSW 2

80%

45°

11 AM

56°

54°

Mostly Cloudy

1%

0% Thunder
( 3% severe)

SW 7

62%

43°

2 PM

61°

59°

Partly Cloudy

SW 12

50%

42°

5 PM

61°

59°

Mostly Cloudy

WSW 14

53%

44°


ONTARIO, CA extended weather forecast
Monday 28 APR 2025	Tuesday 29 APR 2025	Wednesday 30 APR 2025	Thursday 1 MAY 2025	Friday 2 MAY 2025
Low 52°	Low 54°	Low 56°	Low 56°	Low 56°
High 74°	High 76°	High 75°	High 74°	High 76°

Partly Cloudy 13% Rain	Partly Cloudy 1% Rain	Overcast 6% Rain	Overcast 11% Rain	Mostly Cloudy 14% Rain

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