MONTCLAIR, CA 91763 Weather Forecast & Current Conditions

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ONTARIO, CA
Current Weather

3:53 AM PDT APR 1, 2026
Scattered Clouds
59°F
Feels Like: 58°F
Dewpoint: 55°F
Rel. Hum.: 87%
Visibility: 10 miles
Wind: WSW at 7 mph
Pressure:
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MONTCLAIR, CA 91763
Weather Forecast

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Snow Depth pages
TODAY
Partly cloudy. A slight chance of showers this morning. Highs 67 to 73. Areas of winds southwest 10 to 20 mph. Gusts to 30 mph this afternoon. Chance of measurable precipitation 20 percent.
TONIGHT
Partly cloudy. Lows 46 to 53. Areas of winds west 10 to 15 mph with gusts to 30 mph becoming southwest overnight.
THURSDAY
Partly cloudy. Highs 66 to 71. Areas of winds southwest to 10 mph...becoming 10 to 15 mph with gusts to 25 mph in the afternoon.
THURSDAY NIGHT
Partly cloudy. Lows 45 to 52. Areas of winds southwest 10 to 15 mph with gusts to 25 mph becoming east 10 to 20 mph with gusts to 40 mph overnight.
FRIDAY
Partly cloudy. Warmer. Highs 76 to 81. Areas of winds north 20 to 30 mph with gusts to 50 mph.
FRIDAY NIGHT
Partly cloudy. Lows 49 to 56.
SATURDAY
Partly cloudy. Highs 81 to 87.
SATURDAY NIGHT
Partly cloudy in the evening...becoming mostly clear. Lows 47 to 55.
SUNDAY
Mostly sunny. Highs 82 to 86.
SUNDAY NIGHT
Partly cloudy. Lows 49 to 57.
MONDAY
Partly cloudy. Highs 78 to 83.
MONDAY NIGHT
Partly cloudy in the evening...becoming mostly clear. Lows 47 to 55.
TUESDAY
Mostly sunny. Highs 80 to 85.

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  4:00 PM PST  3/31/2026
Wednesday
1 APR 2026
MONTCLAIR, CA 91763 weather forecast Day 1, 0 hours 10 PM 62° 62° Mostly Cloudy 63%
RAIN
.01–.1 in
0% Thunder
( 4% severe)
W   7 81% 56°
Low 57° MONTCLAIR, CA 91763 weather forecast Day 1, 3 hours 1 AM 60° 60° Partly Cloudy WSW   5 87% 56°
High 71° MONTCLAIR, CA 91763 weather forecast Day 1, 6 hours 4 AM 58° 59° Partly Cloudy 5%

0% Thunder
( 0% severe)
WSW   1 90% 55°

Partly Cloudy



MONTCLAIR, CA 91763 weather forecast Day 1, 9 hours 7 AM 58° 59° Mostly Cloudy WSW   2 90% 55°
MONTCLAIR, CA 91763 weather forecast Day 1, 12 hours 10 AM 63° 63° Partly Cloudy 2%

0% Thunder
( 0% severe)
SW   7 70% 53°
MONTCLAIR, CA 91763 weather forecast Day 1, 15 hours 1 PM 69° 69° Partly Cloudy WSW   13 49% 49°
MONTCLAIR, CA 91763 weather forecast Day 1, 18 hours 4 PM 69° 69° Partly Cloudy 3%

0% Thunder
( 2% severe)
WSW   14 49% 49°
MONTCLAIR, CA 91763 weather forecast Day 1, 21 hours 7 PM 63° 62° Partly Cloudy WSW   12 65% 51°
Thursday
2 APR 2026
MONTCLAIR, CA 91763 weather forecast Day 2, 0 hours 10 PM 59° 58° Mostly Cloudy 6%

0% Thunder
( 2% severe)
SW   6 80% 53°
Low 53° MONTCLAIR, CA 91763 weather forecast Day 2, 3 hours 1 AM 57° 57° Mostly Cloudy SW   3 90% 54°
High 70° MONTCLAIR, CA 91763 weather forecast Day 2, 6 hours 4 AM 56° 56° Mostly Cloudy 3%

0% Thunder
( 1% severe)
SW   1 90% 53°

Mostly Cloudy



MONTCLAIR, CA 91763 weather forecast Day 2, 9 hours 7 AM 55° 55° Mostly Cloudy   CALM 93% 53°
MONTCLAIR, CA 91763 weather forecast Day 2, 12 hours 10 AM 61° 62° Mostly Cloudy 0%

0% Thunder
( 0% severe)
SSW   3 72% 52°
MONTCLAIR, CA 91763 weather forecast Day 2, 15 hours 1 PM 68° 68° Partly Cloudy WSW   10 51% 49°
MONTCLAIR, CA 91763 weather forecast Day 2, 18 hours 4 PM 69° 69° Partly Cloudy 0%

0% Thunder
( 0% severe)
WSW   13 49% 49°
MONTCLAIR, CA 91763 weather forecast Day 2, 21 hours 7 PM 63° 63° Partly Cloudy WSW   8 62% 50°

ONTARIO, CA extended weather forecast

Friday
3 APR 2026
Saturday
4 APR 2026
Sunday
5 APR 2026
Monday
6 APR 2026
Tuesday
7 APR 2026
Low 55° Low 54° Low 53° Low 55° Low 54°
High 82° High 84° High 78° High 76° High 73°
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
Partly Cloudy
4% Rain
Partly Cloudy
2% Rain
Partly Cloudy
2% Rain
Partly Cloudy
4% Rain
Mostly Cloudy
12% Rain
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