Best year time to visit Rialto

General weather information about Rialto

Average annual temperature is 17.3 °C

Absolute maximum temperature: 38.0 °C

Absolute minimum temperature: -5.0 °C

Number of sunny days: 195 days

Number of rainy days: 170 days

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* Weather data for Rialto United States is based on climate observations for 2026 year

Rialto air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)22.224.025.829.031.738.036.138.032.831.826.120.2
Average daytime temperature (°C)13.015.316.921.827.031.432.832.329.824.016.813.2
Average temperature (°C)8.39.611.315.621.125.227.426.923.918.511.28.3
Average night temperature (°C)4.55.56.610.615.719.322.922.518.813.96.84.5
Absolute minimum temperature (°C)-4.3-4.9-5.03.47.214.617.516.713.90.6-1.0-3.1

Rialto monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)10.011.012.013.014.014.014.013.012.011.010.09.0
Daylight mean duration (h)10.110.912.013.114.014.514.313.512.411.310.39.8
Daylight minimum duration (h)9.010.011.012.013.014.013.012.011.010.09.09.0
Sunshine mean duration (h)5.86.57.78.511.512.311.110.410.78.17.76.9
Precipitation (mm)15211827411579668311927664876
Sunny days14141715161681318242218
Rainy days1714141515142318127813
Snow days000000000000

Rialto - weather forecast by months

Rialto weather in januaryRialto weather in februaryRialto weather in marchRialto weather in aprilRialto weather in mayRialto weather in juneRialto weather in julyRialto weather in augustRialto weather in septemberRialto weather in octoberRialto weather in novemberRialto weather in december

Best time to visit Rialto:

The best time to visit Rialto during the most sunny months:

  • May — 11.5(h)
  • June — 12.3(h)

The largest precipitation sum in Rialto is at

  • January — 152(mm)
  • March — 274(mm)

    • Weather forecast in the closest to Rialto admin centers

    Weather forecast in the closest towns to Rialto

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    Frequently asked questions

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