RANCHO CUCAMONGA, CA 91730 Weather Forecast & Current Conditions

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91730 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
ONTARIO, CA Current Weather
8:53 PM PDT JUN 8, 2026
Scattered Clouds 68°F
Feels Like:	68°F
Dewpoint:	55°F
Rel. Hum.:	63%
Visibility:	10 miles
Wind:	WSW at 9 mph
Pressure:	29.90 inches
Last 72 hours
Local Area Snow Depth
California Current Weather
California MOS Forecast Weather

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(Automated weather data from NWS/FAA)

91730 WEATHER FORECAST
10-Day model forecast maps 2025 Hurricanes	RANCHO CUCAMONGA, CA 91730 Weather Forecast	Snowfall Forecast pages Snow Depth pages

TONIGHT
Mostly clear. Lows 53 to 58. Areas of winds west 10 to 15 mph with gusts to 25 mph this evening becoming light.

TUESDAY
Mostly sunny. Highs 83 to 89. Areas of winds west to 10 mph...becoming 10 to 15 mph with gusts to 25 mph in the afternoon.

TUESDAY NIGHT
Clear. Lows 57 to 61. Areas of winds west 10 to 15 mph with gusts to 25 mph in the evening becoming light.

WEDNESDAY
Mostly sunny. Highs 88 to 96. Light winds becoming west 10 to 15 mph with gusts to 25 mph in the afternoon.

WEDNESDAY NIGHT
Clear. Lows 56 to 62. Areas of winds southwest to 10 mph in the evening becoming light.

THURSDAY
Mostly sunny. Highs 88 to 96.

THURSDAY NIGHT
Mostly clear in the evening...becoming partly cloudy. Lows 61 to 66.

FRIDAY
Partly cloudy in the morning...becoming mostly sunny. Highs 90 to 97.

FRIDAY NIGHT
Mostly clear. Lows 62 to 67.

SATURDAY
Mostly sunny. Highs 90 to 97.

SATURDAY NIGHT
Clear. Lows 59 to 63.

SUNDAY
Mostly sunny. Highs 88 to 95.

SUNDAY NIGHT
Clear. Lows 58 to 63.

91730 WEATHER SATELLITE LOOPS

Visible Weather Satellite
RANCHO CUCAMONGA, CA 91730

Infrared Weather Satellite
RANCHO CUCAMONGA, CA 91730

91730 WEATHER RADAR LOOP

NEXRAD Weather Radar
RANCHO CUCAMONGA, CA 91730

MOS COMPUTER WEATHER FORECAST

ONTARIO, CA 3 hourly weather forecast

weather forecast created 5:00 AM PDT 6/ 8/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Monday
8 JUN 2026

11 AM

71°

71°

Partly Cloudy

0%

0% Thunder
( 0% severe)

WSW 6

57%

55°

High 80°

2 PM

79°

79°

Clear

WSW 12

41%

53°

Partly Cloudy

5 PM

79°

79°

Partly Cloudy

0%

0% Thunder
( 0% severe)

WSW 13

41%

53°

8 PM

71°

71°

Partly Cloudy

WSW 12

55%

54°

Tuesday
9 JUN 2026

11 PM

64°

64°

Clear

0%

0% Thunder
( 0% severe)

WSW 7

70%

54°

Low 58°

2 AM

61°

62°

Clear

W 3

78%

54°

High 85°

5 AM

59°

60°

Clear

0%

0% Thunder
( 0% severe)

CALM

83%

54°

Clear

8 AM

63°

64°

Partly Cloudy

CALM

75%

55°

11 AM

74°

74°

Clear

0%

0% Thunder
( 0% severe)

SW 6

51%

55°

2 PM

82°

81°

Clear

WSW 10

40%

55°

5 PM

82°

81°

Clear

0%

0% Thunder
( 0% severe)

WSW 12

40%

55°

8 PM

75°

75°

Clear

WSW 9

52%

56°

Wednesday
10 JUN 2026

11 PM

68°

68°

Clear

0%

0% Thunder
( 0% severe)

WSW 6

65%

56°

Low 61°

2 AM

64°

66°

Clear

W 1

75%

56°

High 91°

5 AM

63°

64°

Clear

0%

0% Thunder
( 0% severe)

CALM

81%

57°

Clear

8 AM

66°

66°

Partly Cloudy

CALM

70%

56°

11 AM

80°

81°

Clear

0%

0% Thunder
( 0% severe)

SW 6

47%

58°

2 PM

88°

87°

Clear

WSW 12

36%

58°

5 PM

88°

86°

Clear

WSW 13

34%

56°


ONTARIO, CA extended weather forecast
Thursday 11 JUN 2026	Friday 12 JUN 2026	Saturday 13 JUN 2026	Sunday 14 JUN 2026	Monday 15 JUN 2026
Low 63°	Low 65°	Low 66°	Low 63°	Low 64°
High 92°	High 96°	High 94°	High 92°	High 90°

Partly Cloudy	Clear	Partly Cloudy 1% Rain	Partly Cloudy 1% Rain	Partly Cloudy 2% Rain

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