Best year time to visit City of Fullerton

General weather information about City of Fullerton

Average annual temperature is 11.6 °C

Absolute maximum temperature: 38.8 °C

Absolute minimum temperature: -22.1 °C

Number of sunny days: 224 days

Number of rainy days: 119 days

Number of snow days: 22 days

Look at detailed online map of City of Fullerton

* Weather data for City of Fullerton United States is based on climate observations for 2026 year

City of Fullerton air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)10.215.320.629.230.334.036.738.835.631.919.512.2
Average daytime temperature (°C)0.05.38.818.325.429.429.430.828.118.111.85.9
Average temperature (°C)-4.3-1.71.510.918.923.423.724.621.612.45.71.1
Average night temperature (°C)-7.9-6.3-3.64.813.017.518.619.516.17.81.0-2.5
Absolute minimum temperature (°C)-22.1-21.2-10.5-5.42.710.012.913.09.1-7.0-5.8-6.9

City of Fullerton monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)10.011.012.013.014.015.015.014.013.011.010.09.0
Daylight mean duration (h)9.610.611.913.314.515.114.813.812.511.19.99.2
Daylight minimum duration (h)9.010.011.012.013.014.014.013.011.010.09.09.0
Sunshine mean duration (h)5.27.88.510.611.212.312.011.610.37.57.14.8
Precipitation (mm)5129411333657018391082740
Sunny days181822221513132221162420
Rainy days6766161718991537
Snow days733200000034

City of Fullerton - weather forecast by months

City of Fullerton weather in januaryCity of Fullerton weather in februaryCity of Fullerton weather in marchCity of Fullerton weather in aprilCity of Fullerton weather in mayCity of Fullerton weather in juneCity of Fullerton weather in julyCity of Fullerton weather in augustCity of Fullerton weather in septemberCity of Fullerton weather in octoberCity of Fullerton weather in novemberCity of Fullerton weather in december

Best time to visit City of Fullerton:

The best time to visit City of Fullerton during the most sunny months:

  • June — 12.3(h)
  • July — 12.0(h)
  • August — 11.6(h)

The largest precipitation sum in City of Fullerton is at

  • June — 65(mm)
  • July — 70(mm)
  • October — 108(mm)

    • Weather forecast in the closest to City of Fullerton admin centers

    Weather forecast in the closest towns to City of Fullerton

    Explore City of Fullerton

    See also
    MapTrains schedule
    Plan your trip
    AccommodationExperiencesBlog

    Frequently asked questions

    When is the best time to visit City of Fullerton?
    The historical weather data above shows the warmest, sunniest and driest months to help you choose the best time to visit City of Fullerton.
    What is the weather like in City of Fullerton?
    See average temperature, rainfall and daylight hours for City of Fullerton by month in the table above.
    How many sunny days does City of Fullerton have?
    The monthly weather statistics above show sunshine and rainfall patterns for City of Fullerton throughout the year.