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Ontario, California weather · now

61°

Cloudy

High / Low
79° / 57°
Wind
21 mph SW
Humidity
82%
No precipitation expected in the next 1.7 hours.
ModerateAir quality PollenTreeLowGrassHighWeedNone
Sun 5:41 AM 8:06 PM 14h 25m
Moon Waxing Gibbous 94% lit

Current weather and 7-day forecast for Ontario, California, sourced directly from the National Weather Service. Expect mostly sunny today. Today's high is 79° with a low near 57°.

What to wear today

T-shirt and shorts weather

79°F today — easy summer dressing.

Next 24 hours

50° 70° 85° ↑ 79° ↓ 57° 8 AM 11 AM 2 PM 5 PM 8 PM 11 PM 2 AM 5 AM

  1. 8 AM

    60°

    0%

  2. 10 AM

    65°

    0%

  3. 12 PM

    72°

    0%

  4. 2 PM

    78°

    0%

  5. 4 PM

    78°

    0%

  6. 6 PM

    76°

    0%

  7. 8 PM

    68°

    0%

  8. 10 PM

    63°

    0%

  9. 12 AM

    60°

    4%

  10. 2 AM

    58°

    4%

  11. 4 AM

    58°

    4%

  12. 6 AM

    57°

    4%

Live radar

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Live cameras nearby

See what it actually looks like out there.

Feeds from public state DOT systems. Images may briefly stale, rotate, or go offline during maintenance.

7 days

  1. Today 6/27 Mostly Sunny 4% 79° · 57°
    1. 8 AM 60° Partly Sunny
    2. 9 AM 63° Partly Sunny
    3. 10 AM 65° Partly Sunny
    4. 11 AM 69° Mostly Sunny
    5. 12 PM 72° Mostly Sunny
    6. 1 PM 75° Mostly Sunny
    7. 2 PM 78° Sunny
    8. 3 PM 79° Sunny
    9. 4 PM 78° Sunny
    10. 5 PM 78° Mostly Sunny
    11. 6 PM 76° Partly Cloudy
    12. 7 PM 72° Partly Cloudy
    13. 8 PM 68° Partly Cloudy
    14. 9 PM 65° Partly Cloudy
    15. 10 PM 63° Partly Cloudy
    16. 11 PM 61° Patchy Fog 4%
  2. Sun 6/28 Patchy Fog then Mostly Sunny 4% 76° · 56°
    1. 12 AM 60° Patchy Fog 4%
    2. 1 AM 59° Patchy Fog 4%
    3. 2 AM 58° Patchy Fog 4%
    4. 3 AM 58° Patchy Fog 4%
    5. 4 AM 58° Patchy Fog 4%
    6. 5 AM 57° Patchy Fog 4%
    7. 6 AM 57° Patchy Fog 4%
    8. 7 AM 57° Patchy Fog 4%
    9. 8 AM 58° Patchy Fog 4%
    10. 9 AM 60° Patchy Fog 4%
    11. 10 AM 62° Patchy Fog 4%
    12. 11 AM 65° Sunny
    13. 12 PM 68° Sunny
    14. 1 PM 71° Sunny
    15. 2 PM 74° Sunny
    16. 3 PM 76° Sunny
    17. 4 PM 75° Sunny
    18. 5 PM 75° Sunny
    19. 6 PM 74° Mostly Clear
    20. 7 PM 72° Mostly Clear
    21. 8 PM 67° Mostly Clear
    22. 9 PM 68° Mostly Clear
    23. 10 PM 66° Mostly Clear
    24. 11 PM 61° Patchy Fog 1%
  3. Mon 6/29 Patchy Fog then Sunny 2% 77° · 56°
    1. 12 AM 64° Patchy Fog 1%
    2. 1 AM 63° Patchy Fog 1%
    3. 2 AM 58° Patchy Fog 1%
    4. 3 AM 61° Patchy Fog 1%
    5. 4 AM 61° Patchy Fog 1%
    6. 5 AM 57° Patchy Fog
    7. 6 AM 56° Patchy Fog
    8. 7 AM 57° Patchy Fog
    9. 8 AM 59° Patchy Fog
    10. 9 AM 62° Patchy Fog
    11. 10 AM 64° Patchy Fog
    12. 11 AM 67° Sunny
    13. 12 PM 70° Sunny
    14. 1 PM 73° Sunny
    15. 2 PM 75° Sunny
    16. 3 PM 77° Sunny
    17. 4 PM 76° Sunny
    18. 5 PM 76° Sunny
    19. 6 PM 74° Clear
    20. 7 PM 71° Clear
    21. 8 PM 68° Clear
    22. 9 PM 65° Clear
    23. 10 PM 62° Clear
    24. 11 PM 61° Patchy Fog 2%
  4. Tue 6/30 Patchy Fog then Mostly Sunny 2% 77° · 56°
    1. 12 AM 59° Patchy Fog 2%
    2. 1 AM 58° Patchy Fog 2%
    3. 2 AM 58° Patchy Fog 2%
    4. 3 AM 57° Patchy Fog 2%
    5. 4 AM 56° Patchy Fog 2%
    6. 5 AM 56° Patchy Fog 2%
    7. 6 AM 56° Patchy Fog 2%
    8. 7 AM 57° Patchy Fog 2%
    9. 8 AM 59° Patchy Fog 2%
    10. 9 AM 61° Patchy Fog 2%
    11. 10 AM 64° Patchy Fog 2%
    12. 11 AM 67° Sunny
    13. 12 PM 70° Sunny
    14. 1 PM 73° Sunny
    15. 2 PM 75° Sunny
    16. 3 PM 77° Sunny
    17. 4 PM 76° Sunny
    18. 5 PM 76° Sunny
    19. 6 PM 72° Clear
    20. 7 PM 70° Clear
    21. 8 PM 67° Clear
    22. 9 PM 65° Clear
    23. 10 PM 63° Clear
    24. 11 PM 61° Mostly Clear
  5. Wed 7/1 Sunny 0% 77° · 56°
    1. 12 AM 60° Mostly Clear
    2. 1 AM 59° Mostly Clear
    3. 2 AM 58° Mostly Clear
    4. 3 AM 57° Mostly Clear
    5. 4 AM 57° Mostly Clear
    6. 5 AM 57° Partly Cloudy
    7. 6 AM 57° Mostly Sunny
    8. 7 AM 58° Mostly Sunny
    9. 8 AM 59° Mostly Sunny
    10. 9 AM 61° Mostly Sunny
    11. 10 AM 63° Mostly Sunny
    12. 11 AM 66° Sunny
    13. 12 PM 70° Sunny
    14. 1 PM 73° Sunny
    15. 2 PM 76° Sunny
    16. 3 PM 77° Sunny
    17. 4 PM 77° Sunny
    18. 5 PM 76° Sunny
    19. 6 PM 74° Clear
    20. 7 PM 71° Clear
    21. 8 PM 68° Clear
    22. 9 PM 65° Clear
    23. 10 PM 63° Clear
    24. 11 PM 61° Clear
  6. Thu 7/2 Sunny 0% 80° · 57°
    1. 12 AM 60° Clear
    2. 1 AM 59° Clear
    3. 2 AM 58° Clear
    4. 3 AM 57° Clear
    5. 4 AM 56° Clear
    6. 5 AM 56° Mostly Clear
    7. 6 AM 57° Sunny
    8. 7 AM 58° Sunny
    9. 8 AM 60° Sunny
    10. 9 AM 63° Sunny
    11. 10 AM 66° Sunny
    12. 11 AM 69° Sunny
    13. 12 PM 72° Sunny
    14. 1 PM 76° Sunny
    15. 2 PM 78° Sunny
    16. 3 PM 79° Sunny
    17. 4 PM 79° Sunny
    18. 5 PM 78° Sunny
    19. 6 PM 76° Mostly Clear
    20. 7 PM 73° Mostly Clear
    21. 8 PM 70° Mostly Clear
    22. 9 PM 67° Mostly Clear
    23. 10 PM 65° Mostly Clear
    24. 11 PM 63° Mostly Clear
  7. Fri 7/3 Sunny 0% 84° · 59°
    1. 12 AM 61° Mostly Clear
    2. 1 AM 60° Mostly Clear
    3. 2 AM 59° Mostly Clear
    4. 3 AM 58° Mostly Clear
    5. 4 AM 58° Mostly Clear
    6. 5 AM 58° Mostly Clear
    7. 6 AM 58° Sunny
    8. 7 AM 60° Sunny
    9. 8 AM 62° Sunny
    10. 9 AM 66° Sunny
    11. 10 AM 70° Sunny
    12. 11 AM 74° Sunny
    13. 12 PM 77° Sunny
    14. 1 PM 80° Sunny
    15. 2 PM 82° Sunny
    16. 3 PM 83° Sunny
    17. 4 PM 83° Sunny
    18. 5 PM 82° Sunny
    19. 6 PM 80° Mostly Clear
    20. 7 PM 76° Mostly Clear
Extended outlook days 8–16
  1. Sat 7/4 Sunny 0% 87° · 66°
  2. Sun 7/5 Sunny 0% 91° · 68°
  3. Mon 7/6 Sunny 1% 94° · 70°
  4. Tue 7/7 Sunny 1% 96° · 72°
  5. Wed 7/8 Sunny 3% 97° · 76°
  6. Thu 7/9 Sunny 3% 97° · 77°
  7. Fri 7/10 Sunny 10% 92° · 73°
  8. Sat 7/11 Sunny 6% 91° · 72°
  9. Sun 7/12 Cloudy 10% 87° · 71°

Days 8+ from the Open-Meteo multi-model ensemble — treat as a guide; accuracy drops past day 7.

Best day this week

Mild temps, low rain chance, clearer skies.

Wednesday, 7/1

Sunny, 77° / 56°

  1. Tomorrow76°56°
  2. Mon77°56°
  3. Tue77°56°
  4. Wed77°56°
  5. Thu80°57°
  6. Fri84°59°

Best time to head outside

Picks the upcoming daytime hour with the most favorable conditions for each activity. Factors in temperature, wind, precipitation timing, and pollen.

  • Run9 AM

    comfortable at 63°F · calm wind · no rain expected · pollen high today — allergy sufferers, take note

    Excellent100 / 100
  • Bike9 AM

    comfortable at 63°F · calm wind · no rain expected · pollen high today — allergy sufferers, take note

    Excellent100 / 100
  • Golf9 AM

    comfortable at 63°F · calm wind · no rain expected · pollen high today — allergy sufferers, take note

    Excellent100 / 100
  • Picnic11 AM

    comfortable at 69°F · calm wind · no rain expected · pollen high today — allergy sufferers, take note

    Excellent100 / 100
  • Magic ShowAnytime

    Any weather is magic show weather. Indoors or out, magic doesn't care.

    Corporate Magician Scott Henderson

How well did we do?

Average miss by lead time.

Each morning we save the day's predicted high/low. As later days arrive, we grade what we said against what the station actually recorded.

Same day
±3°
4 days graded
1 day out
±3°
4 days graded
3 days out
±4°
4 days graded
7 days out
±10°
3 days graded
Day-by-day, 1 day out4 days
  1. Yesterday±1°
    High82°81°+1°
    Low59°59°0°
  2. Wed, Jun 24±4°
    High90°86°+4°
    Low62°63°-1°
  3. Tue, Jun 23±6°
    High90°84°+6°
    Low64°59°+5°
  4. Sun, Jun 21±1°
    High80°79°+1°
    Low58°57°+1°

Climate normals

What weather to expect in Ontario

Ontario in June typically averages 87° highs and 59° lows, with about 1 day of rain. The hottest stretch is August (average high 95°); the coldest is January (average low 46°). April is the wettest month on average.

MonthAvg highAvg lowRainy days
Jan66°46°5
Feb68°49°6
Mar75°52°7
Apr75°53°10
May80°56°7
Jun87°59°1
Jul92°63°0
Aug95°66°0
Sep90°65°2
Oct83°59°4
Nov70°51°6
Dec69°49°3

Normals derived from the past two years of observations via Open-Meteo's historical archive.

More for Ontario

Other cities in California

Detailed forecast (NWS)

Today
Mostly sunny, with a high near 79. West wind 0 to 15 mph, with gusts as high as 25 mph.
Sunday
Patchy fog before 11am. Mostly sunny, with a high near 76. West wind 0 to 10 mph, with gusts as high as 20 mph.
Monday
Patchy fog before 11am. Sunny, with a high near 77. Southwest wind 0 to 10 mph, with gusts as high as 20 mph.
Tuesday
Patchy fog before 11am. Mostly sunny, with a high near 77.

Forecast details

NWS gridpoint
SGX 49,76
Radar station
KSOX
Time zone
America/Los_Angeles
Coordinates
34.063, -117.651