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Fontana, California · now

63°

Patchy Fog

High / Low
/ 56°
Wind
19 mph SW
Humidity
82%

Tomorrow· Wednesday79°/56°· Patchy Fog then Mostly Sunny

No precipitation expected in the next 1.6 hours.

Current weather and 7-day forecast for Fontana, California, sourced directly from the National Weather Service. Expect patchy fog today.

Temperature · next 24 hours

50° 70° 85° 78° 56° 5 AM 8 AM 11 AM 2 PM 5 PM 8 PM 11 PM 2 AM

Next 24 hours

  1. 5 AM

    58°

    6%

  2. 7 AM

    58°

    6%

  3. 9 AM

    62°

    6%

  4. 11 AM

    68°

    0%

  5. 1 PM

    74°

    0%

  6. 3 PM

    77°

    0%

  7. 5 PM

    76°

    0%

  8. 7 PM

    74°

    0%

  9. 9 PM

    67°

    0%

  10. 11 PM

    63°

    0%

  11. 1 AM

    60°

    0%

  12. 3 AM

    58°

    0%

Live radar

View full radar →

7 days

  1. Today 5/13 Patchy Fog 6% · 56°
  2. Wed 5/13 Patchy Fog then Mostly Sunny 6% 79° · 56°
  3. Thu 5/14 Patchy Fog then Sunny 0% 82° · 57°
  4. Fri 5/15 Sunny 0% 83° · 57°
  5. Sat 5/16 Patchy Fog then Sunny 0% 82° · 56°
  6. Sun 5/17 Sunny 1% 80° · 56°
  7. Mon 5/18 Sunny 0% 86° · 59°
Extended outlook days 8–17
  1. Tue 5/19 Cloudy 0% 80° · 60°
  2. Wed 5/20 Cloudy 0% 83° · 64°
  3. Thu 5/21 Cloudy 2% 80° · 65°
  4. Fri 5/22 Cloudy 1% 75° · 60°
  5. Sat 5/23 Cloudy 4% 73° · 59°
  6. Sun 5/24 Cloudy 3% 78° · 58°
  7. Mon 5/25 Sunny 3% 84° · 61°
  8. Tue 5/26 Cloudy 3% 93° · 68°
  9. Wed 5/27 Cloudy 3% 99° · 74°
  10. Thu 5/28 Cloudy 3% 99° · 78°

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

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.

  • Run6 AM

    comfortable at 56°F · calm wind · no rain expected · pollen high today — allergy sufferers, take note

    Excellent100 / 100
  • Bike8 AM

    comfortable at 60°F · calm wind · no rain expected · pollen high today — allergy sufferers, take note

    Excellent100 / 100
  • Golf8 AM

    comfortable at 60°F · calm wind · no rain expected · pollen high today — allergy sufferers, take note

    Excellent100 / 100
  • Picnic11 AM

    comfortable at 68°F · calm wind · no rain expected · pollen high today — allergy sufferers, take note

    Excellent100 / 100

Climate normals

What weather to expect in Fontana

Fontana in May typically averages 80° highs and 55° lows, with about 4 days of rain. The hottest stretch is August (average high 97°); the coldest is January (average low 48°). March is the wettest month on average.

MonthAvg highAvg lowRainy days
Jan66°48°6
Feb69°49°7
Mar74°52°8
Apr74°51°8
May80°55°4
Jun90°62°1
Jul95°68°0
Aug97°70°0
Sep91°66°3
Oct83°58°2
Nov70°50°8
Dec70°50°4

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

Forecast details

NWS gridpoint
SGX 57,76
Radar station
KSOX
Time zone
America/Los_Angeles
Coordinates
34.092, -117.435