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Fullerton, California weather · now

73°

Sunny

Feels
74°
High / Low
88° / 68°
Wind
4 mph S
Humidity
81%
No precipitation expected in the next 1.6 hours.
ModerateAir quality PollenTreeNoneGrassModerateWeedModerate
Sun 6:10 AM 7:43 PM 13h 32m
Moon Waning Crescent 3% lit

Current weather and 7-day forecast for Fullerton, California, sourced directly from the National Weather Service. Expect sunny today. Today's high is 88° with a low near 68°.

What to wear today

Loose, light, and water nearby

88°F — wear breathable fabrics and stay hydrated.

Next 24 hours

65° 80° 90° ↑ 86° ↓ 68° 8 AM 11 AM 2 PM 5 PM 8 PM 11 PM 2 AM 5 AM

  1. 8 AM

    71°

    2%

  2. 10 AM

    78°

    2%

  3. 12 PM

    84°

    1%

  4. 2 PM

    86°

    1%

  5. 4 PM

    86°

    1%

  6. 6 PM

    83°

    0%

  7. 8 PM

    77°

    0%

  8. 10 PM

    73°

    0%

  9. 12 AM

    71°

    0%

  10. 2 AM

    70°

    0%

  11. 4 AM

    69°

    0%

  12. 6 AM

    68°

    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 2% 88° · 68°
    1. 8 AM 71° Sunny 2%
    2. 9 AM 74° Sunny 2%
    3. 10 AM 78° Sunny 2%
    4. 11 AM 82° Sunny 1%
    5. 12 PM 84° Sunny 1%
    6. 1 PM 85° Sunny 1%
    7. 2 PM 86° Sunny 1%
    8. 3 PM 86° Sunny 1%
    9. 4 PM 86° Sunny 1%
    10. 5 PM 85° Sunny
    11. 6 PM 83° Clear
    12. 7 PM 80° Clear
    13. 8 PM 77° Mostly Clear
    14. 9 PM 74° Mostly Clear
    15. 10 PM 73° Mostly Clear
    16. 11 PM 72° Mostly Clear
  2. Wed 8/12 Partly Sunny 0% 85° · 67°
    1. 12 AM 71° Mostly Clear
    2. 1 AM 70° Mostly Clear
    3. 2 AM 70° Partly Cloudy
    4. 3 AM 69° Partly Cloudy
    5. 4 AM 69° Partly Cloudy
    6. 5 AM 69° Partly Cloudy
    7. 6 AM 68° Mostly Sunny
    8. 7 AM 68° Mostly Sunny
    9. 8 AM 70° Mostly Sunny
    10. 9 AM 72° Mostly Sunny
    11. 10 AM 76° Mostly Sunny
    12. 11 AM 78° Partly Sunny
    13. 12 PM 80° Partly Sunny
    14. 1 PM 82° Partly Sunny
    15. 2 PM 82° Partly Sunny
    16. 3 PM 83° Partly Sunny
    17. 4 PM 83° Partly Sunny
    18. 5 PM 82° Partly Sunny
    19. 6 PM 80° Mostly Cloudy
    20. 7 PM 77° Mostly Cloudy
    21. 8 PM 74° Mostly Cloudy
    22. 9 PM 72° Mostly Cloudy
    23. 10 PM 71° Mostly Cloudy
    24. 11 PM 70° Mostly Cloudy
  3. Thu 8/13 Partly Sunny 0% 82° · 66°
    1. 12 AM 69° Mostly Cloudy
    2. 1 AM 68° Mostly Cloudy
    3. 2 AM 68° Mostly Cloudy
    4. 3 AM 68° Mostly Cloudy
    5. 4 AM 67° Mostly Cloudy
    6. 5 AM 67° Mostly Cloudy
    7. 6 AM 67° Mostly Cloudy
    8. 7 AM 68° Mostly Cloudy
    9. 8 AM 69° Mostly Cloudy
    10. 9 AM 71° Mostly Cloudy
    11. 10 AM 74° Mostly Cloudy
    12. 11 AM 76° Partly Sunny
    13. 12 PM 78° Partly Sunny
    14. 1 PM 79° Partly Sunny
    15. 2 PM 79° Partly Sunny
    16. 3 PM 80° Partly Sunny
    17. 4 PM 80° Partly Sunny
    18. 5 PM 79° Mostly Sunny
    19. 6 PM 77° Partly Cloudy
    20. 7 PM 75° Partly Cloudy
    21. 8 PM 72° Partly Cloudy
    22. 9 PM 71° Partly Cloudy
    23. 10 PM 70° Partly Cloudy
    24. 11 PM 69° Mostly Cloudy
  4. Fri 8/14 Mostly Sunny 1% 83° · 65°
    1. 12 AM 68° Mostly Cloudy
    2. 1 AM 68° Mostly Cloudy
    3. 2 AM 67° Mostly Cloudy
    4. 3 AM 66° Mostly Cloudy
    5. 4 AM 66° Mostly Cloudy
    6. 5 AM 66° Mostly Cloudy
    7. 6 AM 66° Mostly Cloudy
    8. 7 AM 66° Mostly Cloudy
    9. 8 AM 68° Mostly Cloudy
    10. 9 AM 70° Mostly Cloudy
    11. 10 AM 73° Mostly Cloudy
    12. 11 AM 75° Mostly Sunny
    13. 12 PM 77° Mostly Sunny
    14. 1 PM 79° Mostly Sunny
    15. 2 PM 80° Mostly Sunny
    16. 3 PM 81° Mostly Sunny
    17. 4 PM 81° Mostly Sunny
    18. 5 PM 80° Sunny
    19. 6 PM 77° Mostly Clear
    20. 7 PM 74° Mostly Clear
    21. 8 PM 72° Mostly Clear
    22. 9 PM 70° Mostly Clear
    23. 10 PM 70° Mostly Clear
    24. 11 PM 69° Partly Cloudy
  5. Sat 8/15 Mostly Sunny 1% 84° · 66°
    1. 12 AM 68° Partly Cloudy
    2. 1 AM 67° Partly Cloudy
    3. 2 AM 67° Partly Cloudy
    4. 3 AM 66° Partly Cloudy
    5. 4 AM 66° Partly Cloudy
    6. 5 AM 66° Mostly Cloudy 1%
    7. 6 AM 66° Partly Sunny 1%
    8. 7 AM 67° Partly Sunny 1%
    9. 8 AM 68° Partly Sunny 1%
    10. 9 AM 71° Partly Sunny 1%
    11. 10 AM 74° Partly Sunny 1%
    12. 11 AM 77° Mostly Sunny 1%
    13. 12 PM 80° Mostly Sunny 1%
    14. 1 PM 82° Mostly Sunny 1%
    15. 2 PM 83° Mostly Sunny 1%
    16. 3 PM 84° Mostly Sunny 1%
    17. 4 PM 84° Mostly Sunny 1%
    18. 5 PM 82° 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 69° Partly Cloudy
  6. Sun 8/16 Mostly Sunny 0% 85° · 66°
    1. 12 AM 68° Partly Cloudy
    2. 1 AM 68° Partly Cloudy
    3. 2 AM 68° Partly Cloudy
    4. 3 AM 67° Partly Cloudy
    5. 4 AM 66° Partly Cloudy
    6. 5 AM 66° Mostly Cloudy
    7. 6 AM 66° Partly Sunny
    8. 7 AM 67° Partly Sunny
    9. 8 AM 69° Partly Sunny
    10. 9 AM 72° Partly Sunny
    11. 10 AM 75° Partly Sunny
    12. 11 AM 78° Sunny
    13. 12 PM 81° Sunny
    14. 1 PM 83° Sunny
    15. 2 PM 84° Sunny
    16. 3 PM 85° Sunny
    17. 4 PM 84° Sunny
    18. 5 PM 83° Sunny
    19. 6 PM 81° Mostly Clear
    20. 7 PM 78° Mostly Clear
    21. 8 PM 75° Mostly Clear
    22. 9 PM 73° Mostly Clear
    23. 10 PM 71° Mostly Clear
    24. 11 PM 70° Mostly Clear
  7. Mon 8/17 Mostly Sunny 1% 85° · 66°
    1. 12 AM 69° Mostly Clear
    2. 1 AM 68° Mostly Clear
    3. 2 AM 68° Mostly Clear
    4. 3 AM 67° Mostly Clear
    5. 4 AM 67° Mostly Clear
    6. 5 AM 67° Mostly Cloudy
    7. 6 AM 67° Partly Sunny
    8. 7 AM 67° Partly Sunny
    9. 8 AM 69° Partly Sunny
    10. 9 AM 71° Partly Sunny
    11. 10 AM 75° Partly Sunny
    12. 11 AM 78° Sunny
    13. 12 PM 81° Sunny
    14. 1 PM 83° Sunny
    15. 2 PM 84° Sunny
    16. 3 PM 85° Sunny
    17. 4 PM 84° Sunny
    18. 5 PM 83° Mostly Sunny
    19. 6 PM 81° Partly Cloudy
    20. 7 PM 78° Partly Cloudy
Extended outlook days 8–16
  1. Tue 8/18 Cloudy 2% 95° · 74°
  2. Wed 8/19 Partly Cloudy 2% 92° · 75°
  3. Thu 8/20 Mostly Sunny 1% 92° · 75°
  4. Fri 8/21 Sunny 2% 90° · 73°
  5. Sat 8/22 Sunny 10% 92° · 73°
  6. Sun 8/23 Sunny 9% 95° · 75°
  7. Mon 8/24 Partly Cloudy 6% 97° · 77°
  8. Tue 8/25 Sunny 16% 96° · 79°
  9. Wed 8/26 Sunny 15% 95° · 78°

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

Best day this week

Quiet week — most days look comparable.

Wednesday, 8/12

Partly Sunny, 85° / 67°

  1. Tomorrow85°67°
  2. Thu82°66°
  3. Fri83°65°
  4. Sat84°66°
  5. Sun85°66°
  6. Mon85°66°

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 Fullerton

Fullerton in August typically averages 87° highs and 64° lows, with about 0 days of rain. The hottest stretch is August (average high 87°); the coldest is January (average low 51°). March is the wettest month on average.

MonthAvg highAvg lowRainy days
Jan69°51°6
Feb71°52°6
Mar74°53°8
Apr73°54°7
May76°58°3
Jun79°60°1
Jul84°64°3
Aug87°64°0
Sep86°64°2
Oct80°58°3
Nov71°53°6
Dec68°51°3

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

More for Fullerton

Other cities in California

Detailed forecast (NWS)

Today
Sunny, with a high near 88. Southwest wind 0 to 10 mph.
Wednesday
Partly sunny, with a high near 85. Southwest wind 0 to 10 mph.
Thursday
Partly sunny, with a high near 82. Southwest wind 0 to 10 mph.
Friday
Mostly sunny, with a high near 83.

Forecast details

NWS gridpoint
SGX 37,69
Radar station
KSOX
Time zone
America/Los_Angeles
Coordinates
33.870, -117.924