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Ontario, California weather · now

75°

Clear

Feels
75°
High / Low
93° / 66°
Wind
21 mph SW
Humidity
61%
No precipitation expected in the next 1.6 hours.
ModerateAir quality PollenTreeNoneGrassModerateWeedModerate
Sun 6:09 AM 7:42 PM 13h 33m
Moon Waning Crescent 3% lit

Current weather and 7-day forecast for Ontario, California, sourced directly from the National Weather Service. Expect sunny today. Today's high is 93° with a low near 66°.

What to wear today

Loose, light, and water nearby

93°F — wear breathable fabrics and stay hydrated.

Next 24 hours

60° 80° 100° ↑ 91° ↓ 66° 8 AM 11 AM 2 PM 5 PM 8 PM 11 PM 2 AM 5 AM

  1. 8 AM

    72°

    2%

  2. 10 AM

    80°

    2%

  3. 12 PM

    87°

    6%

  4. 2 PM

    91°

    6%

  5. 4 PM

    90°

    6%

  6. 6 PM

    87°

    3%

  7. 8 PM

    80°

    0%

  8. 10 PM

    74°

    0%

  9. 12 AM

    71°

    0%

  10. 2 AM

    69°

    0%

  11. 4 AM

    67°

    0%

  12. 6 AM

    66°

    0%

Live radar

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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 8/11 Sunny 6% 93° · 66°
    1. 9 AM 75° Sunny 2%
    2. 10 AM 80° Sunny 2%
    3. 11 AM 84° Sunny 6%
    4. 12 PM 87° Sunny 6%
    5. 1 PM 89° Sunny 6%
    6. 2 PM 91° Sunny 6%
    7. 3 PM 90° Sunny 6%
    8. 4 PM 90° Sunny 6%
    9. 5 PM 89° Sunny 3%
    10. 6 PM 87° Clear 3%
    11. 7 PM 84° Clear 3%
    12. 8 PM 80° Mostly Clear
    13. 9 PM 77° Mostly Clear
    14. 10 PM 74° Mostly Clear
    15. 11 PM 73° Clear
  2. Wed 8/12 Mostly Sunny 0% 89° · 64°
    1. 12 AM 71° Clear
    2. 1 AM 70° Clear
    3. 2 AM 69° Mostly Clear
    4. 3 AM 68° Mostly Clear
    5. 4 AM 67° Mostly Clear
    6. 5 AM 67° Mostly Clear
    7. 6 AM 66° Sunny
    8. 7 AM 67° Sunny
    9. 8 AM 68° Mostly Sunny
    10. 9 AM 71° Mostly Sunny
    11. 10 AM 75° Mostly Sunny
    12. 11 AM 78° Mostly Sunny
    13. 12 PM 81° Mostly Sunny
    14. 1 PM 84° Mostly Sunny
    15. 2 PM 86° Mostly Sunny
    16. 3 PM 86° Mostly Sunny
    17. 4 PM 87° Mostly Sunny
    18. 5 PM 85° Partly Sunny
    19. 6 PM 84° Mostly Cloudy
    20. 7 PM 81° Mostly Cloudy
    21. 8 PM 76° Mostly Cloudy
    22. 9 PM 74° Mostly Cloudy
    23. 10 PM 71° Mostly Cloudy
    24. 11 PM 70° Patchy Fog
  3. Thu 8/13 Patchy Fog then Mostly Sunny 0% 85° · 63°
    1. 12 AM 68° Patchy Fog
    2. 1 AM 67° Patchy Fog
    3. 2 AM 66° Patchy Fog
    4. 3 AM 65° Patchy Fog
    5. 4 AM 64° Patchy Fog
    6. 5 AM 64° Patchy Fog
    7. 6 AM 64° Patchy Fog
    8. 7 AM 64° Patchy Fog
    9. 8 AM 66° Patchy Fog
    10. 9 AM 68° Patchy Fog
    11. 10 AM 71° Patchy Fog
    12. 11 AM 74° Mostly Sunny
    13. 12 PM 77° Mostly Sunny
    14. 1 PM 80° Mostly Sunny
    15. 2 PM 82° Mostly Sunny
    16. 3 PM 83° Mostly Sunny
    17. 4 PM 83° Mostly Sunny
    18. 5 PM 82° Mostly Sunny
    19. 6 PM 80° Partly Cloudy
    20. 7 PM 77° Partly Cloudy
    21. 8 PM 74° Partly Cloudy
    22. 9 PM 72° Partly Cloudy
    23. 10 PM 70° Partly Cloudy
    24. 11 PM 68° Partly Cloudy
  4. Fri 8/14 Mostly Sunny 1% 86° · 62°
    1. 12 AM 66° Partly Cloudy
    2. 1 AM 65° Partly Cloudy
    3. 2 AM 64° Partly Cloudy
    4. 3 AM 64° Partly Cloudy
    5. 4 AM 63° Partly Cloudy
    6. 5 AM 63° Partly Cloudy
    7. 6 AM 62° Mostly Sunny
    8. 7 AM 63° Mostly Sunny
    9. 8 AM 64° Mostly Sunny
    10. 9 AM 67° Mostly Sunny
    11. 10 AM 70° Mostly Sunny
    12. 11 AM 74° Mostly Sunny
    13. 12 PM 77° Mostly Sunny
    14. 1 PM 80° Mostly Sunny
    15. 2 PM 82° Mostly Sunny
    16. 3 PM 84° Mostly Sunny
    17. 4 PM 84° Mostly Sunny
    18. 5 PM 83° Sunny
    19. 6 PM 80° Mostly Clear
    20. 7 PM 77° Mostly Clear
    21. 8 PM 74° Mostly Clear
    22. 9 PM 72° Mostly Clear
    23. 10 PM 70° Mostly Clear
    24. 11 PM 68° Mostly Clear
  5. Sat 8/15 Mostly Sunny 1% 88° · 64°
    1. 12 AM 66° Mostly Clear
    2. 1 AM 65° Mostly Clear
    3. 2 AM 64° Mostly Clear
    4. 3 AM 63° Mostly Clear
    5. 4 AM 62° Mostly Clear
    6. 5 AM 62° Partly Cloudy 1%
    7. 6 AM 62° Mostly Sunny 1%
    8. 7 AM 63° Mostly Sunny 1%
    9. 8 AM 65° Mostly Sunny 1%
    10. 9 AM 69° Mostly Sunny 1%
    11. 10 AM 73° Mostly Sunny 1%
    12. 11 AM 78° Mostly Sunny 1%
    13. 12 PM 82° Mostly Sunny 1%
    14. 1 PM 85° Mostly Sunny 1%
    15. 2 PM 87° Mostly Sunny 1%
    16. 3 PM 88° Mostly Sunny 1%
    17. 4 PM 88° Mostly Sunny 1%
    18. 5 PM 86° Sunny
    19. 6 PM 84° Mostly Clear
    20. 7 PM 80° Mostly Clear
    21. 8 PM 77° Mostly Clear
    22. 9 PM 74° Mostly Clear
    23. 10 PM 71° Mostly Clear
    24. 11 PM 69° Mostly Clear
  6. Sun 8/16 Sunny 0% 89° · 64°
    1. 12 AM 67° Mostly Clear
    2. 1 AM 66° Mostly Clear
    3. 2 AM 65° Mostly Clear
    4. 3 AM 64° Mostly Clear
    5. 4 AM 64° Mostly Clear
    6. 5 AM 64° Mostly Clear
    7. 6 AM 64° Sunny
    8. 7 AM 65° Sunny
    9. 8 AM 67° Sunny
    10. 9 AM 71° Sunny
    11. 10 AM 76° Sunny
    12. 11 AM 80° Sunny
    13. 12 PM 84° Sunny
    14. 1 PM 86° Sunny
    15. 2 PM 88° Sunny
    16. 3 PM 89° Sunny
    17. 4 PM 88° Sunny
    18. 5 PM 87° Sunny
    19. 6 PM 85° Mostly Clear
    20. 7 PM 81° Mostly Clear
    21. 8 PM 78° Mostly Clear
    22. 9 PM 75° Mostly Clear
    23. 10 PM 72° Mostly Clear
    24. 11 PM 70° Mostly Clear
  7. Mon 8/17 Mostly Sunny 1% 89° · 64°
    1. 12 AM 68° Mostly Clear
    2. 1 AM 67° Mostly Clear
    3. 2 AM 66° Mostly Clear
    4. 3 AM 65° Mostly Clear
    5. 4 AM 65° Mostly Clear
    6. 5 AM 65° Mostly Clear
    7. 6 AM 65° Sunny
    8. 7 AM 66° Sunny
    9. 8 AM 68° Sunny
    10. 9 AM 72° Sunny
    11. 10 AM 76° Sunny
    12. 11 AM 80° Sunny
    13. 12 PM 84° Sunny
    14. 1 PM 86° Sunny
    15. 2 PM 88° Sunny
    16. 3 PM 89° Sunny
    17. 4 PM 88° Sunny
    18. 5 PM 87° Mostly Sunny
    19. 6 PM 84° Partly Cloudy
    20. 7 PM 81° Partly Cloudy
Extended outlook days 8–16
  1. Tue 8/18 Cloudy 2% 98° · 77°
  2. Wed 8/19 Mostly Sunny 2% 95° · 78°
  3. Thu 8/20 Mostly Sunny 2% 94° · 76°
  4. Fri 8/21 Sunny 2% 93° · 74°
  5. Sat 8/22 Sunny 11% 94° · 74°
  6. Sun 8/23 Sunny 10% 97° · 77°
  7. Mon 8/24 Cloudy 11% 99° · 79°
  8. Tue 8/25 Partly Cloudy 19% 99° · 82°
  9. Wed 8/26 Sunny 26% 97° · 80°

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.

Sunday, 8/16

Sunny, 89° / 64°

  1. Tomorrow89°64°
  2. Thu85°63°
  3. Fri86°62°
  4. Sat88°64°
  5. Sun89°64°
  6. Mon89°64°

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.

Climate normals

What weather to expect in Ontario

Ontario in August typically averages 94° highs and 66° lows, with about 0 days of rain. The hottest stretch is August (average high 94°); 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
Jun86°59°1
Jul91°63°1
Aug94°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
Sunny, with a high near 93. Southwest wind 0 to 15 mph, with gusts as high as 25 mph.
Wednesday
Mostly sunny, with a high near 89. Southwest wind 0 to 15 mph, with gusts as high as 25 mph.
Thursday
Patchy fog before 11am. Mostly sunny, with a high near 85. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Friday
Mostly sunny, with a high near 86.

Forecast details

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