MONTCLAIR, CA 91763 Weather Forecast & Current Conditions

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ONTARIO, CA
Current Weather

10:53 PM PDT MAY 18, 2025
Clear
63°F
Feels Like: 63°F
Dewpoint: 50°F
Rel. Hum.: 62%
Visibility: 10 miles
Wind: W at 7 mph
Pressure: 29.95 inches
Last 72 hours

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MONTCLAIR, CA 91763
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
TONIGHT
Mostly clear this evening...becoming partly cloudy. Lows 48 to 54. Areas of winds west 10 to 15 mph with gusts to 25 mph this evening becoming light.
MONDAY
Mostly sunny. Warmer. Highs 85 to 89. Areas of winds north to 10 mph becoming west with gusts to 30 mph in the afternoon.
MONDAY NIGHT
Mostly clear. Lows 55 to 61. Areas of winds west 10 to 15 mph with gusts to 25 mph in the evening becoming light.
TUESDAY
Mostly sunny. Highs 90 to 94. Light winds becoming southwest 10 to 15 mph with gusts to 25 mph in the afternoon.
TUESDAY NIGHT
Mostly clear. Lows 56 to 63. Areas of winds west 10 to 15 mph in the evening becoming light.
WEDNESDAY
Mostly sunny. Highs 94 to 99.
WEDNESDAY NIGHT
Mostly clear. Lows 57 to 63.
THURSDAY
Mostly sunny. Highs 94 to 99.
THURSDAY NIGHT
Mostly clear in the evening...becoming partly cloudy. Lows 57 to 63.
FRIDAY
Patchy fog in the morning. Partly cloudy. Highs 87 to 91.
FRIDAY NIGHT
Mostly clear in the evening...becoming partly cloudy. Lows 53 to 59.
SATURDAY
Partly cloudy in the morning...becoming mostly sunny. Highs 82 to 87.
SATURDAY NIGHT
Mostly clear. Lows 52 to 59.

Visible Weather Satellite
MONTCLAIR, CA 91763
Infrared Weather Satellite
MONTCLAIR, CA 91763
NEXRAD Weather Radar
MONTCLAIR, CA 91763

ONTARIO, CA 3 hourly weather forecast

weather forecast created  5:00 PM PDT  5/18/2025
Monday
19 MAY 2025
MONTCLAIR, CA 91763 weather forecast Day 1, 0 hours 11 PM 60° 60° Clear 0%

0% Thunder
( 0% severe)
W   5 72% 51°
Low 55° MONTCLAIR, CA 91763 weather forecast Day 1, 3 hours 2 AM 58° 59° Clear N   2 75% 50°
High 87° MONTCLAIR, CA 91763 weather forecast Day 1, 6 hours 5 AM 56° 56° Clear 0%

0% Thunder
( 0% severe)
N   2 77% 49°

Clear



MONTCLAIR, CA 91763 weather forecast Day 1, 9 hours 8 AM 62° 63° Clear SW   2 65% 50°
MONTCLAIR, CA 91763 weather forecast Day 1, 12 hours 11 AM 76° 78° Clear 0%

0% Thunder
( 0% severe)
W   5 36% 47°
MONTCLAIR, CA 91763 weather forecast Day 1, 15 hours 2 PM 85° 82° Clear WSW   9 24% 44°
MONTCLAIR, CA 91763 weather forecast Day 1, 18 hours 5 PM 85° 83° Clear 0%

0% Thunder
( 0% severe)
WSW   13 27% 47°
MONTCLAIR, CA 91763 weather forecast Day 1, 21 hours 8 PM 76° 78° Clear WSW   8 36% 47°
Tuesday
20 MAY 2025
MONTCLAIR, CA 91763 weather forecast Day 2, 0 hours 11 PM 69° 69° Clear 0%

0% Thunder
( 0% severe)
N   5 47% 48°
Low 61° MONTCLAIR, CA 91763 weather forecast Day 2, 3 hours 2 AM 65° 65° Clear ENE   3 50% 46°
High 90° MONTCLAIR, CA 91763 weather forecast Day 2, 6 hours 5 AM 62° 63° Clear 0%

0% Thunder
( 0% severe)
NNE   2 56% 46°

Clear



MONTCLAIR, CA 91763 weather forecast Day 2, 9 hours 8 AM 69° 69° Clear NE   1 45% 47°
MONTCLAIR, CA 91763 weather forecast Day 2, 12 hours 11 AM 81° 80° Clear 0%

0% Thunder
( 0% severe)
SW   3 27% 44°
MONTCLAIR, CA 91763 weather forecast Day 2, 15 hours 2 PM 89° 86° Clear WSW   9 22% 45°
MONTCLAIR, CA 91763 weather forecast Day 2, 18 hours 5 PM 88° 85° Clear 0%

0% Thunder
( 0% severe)
WSW   13 22% 45°
MONTCLAIR, CA 91763 weather forecast Day 2, 21 hours 8 PM 78° 78° Clear WSW   8 32% 46°

ONTARIO, CA extended weather forecast

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Low 58° Low 62° Low 62° Low 62° Low 60°
High 90° High 92° High 92° High 88° High 84°
MONTCLAIR, CA 91763 weather forecast Day 3 MONTCLAIR, CA 91763 weather forecast Day 4 MONTCLAIR, CA 91763 weather forecast Day 5 MONTCLAIR, CA 91763 weather forecast Day 6 MONTCLAIR, CA 91763 weather forecast Day 7
Clear
1% Rain
Clear
2% Rain
Clear
2% Rain
Partly Cloudy
4% Rain
Partly Cloudy
3% Rain
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