Best year time to visit Umatilla

General weather information about Umatilla

Average annual temperature is 22.5 °C

Absolute maximum temperature: 38.6 °C

Absolute minimum temperature: 1.4 °C

Number of sunny days: 140 days

Number of rainy days: 225 days

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

Umatilla air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)27.530.031.633.133.235.536.638.634.030.929.827.3
Average daytime temperature (°C)22.025.927.029.029.431.833.634.931.328.024.120.8
Average temperature (°C)16.119.420.722.923.626.228.129.026.122.719.116.4
Average night temperature (°C)11.714.415.918.519.222.424.624.922.318.715.413.1
Absolute minimum temperature (°C)1.47.26.813.014.918.722.723.417.411.45.76.3

Umatilla monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)10.011.012.013.013.013.013.013.012.011.011.010.0
Daylight mean duration (h)10.511.212.012.913.614.013.813.212.311.510.710.3
Daylight minimum duration (h)10.010.011.012.013.013.013.012.011.011.010.010.0
Sunshine mean duration (h)8.59.210.110.111.611.111.111.310.29.06.86.8
Precipitation (mm)35204299981521518915147167106
Sunny days2318168112138201614
Rainy days81015222028302822111417
Snow days000000000000

Umatilla - weather forecast by months

Umatilla weather in januaryUmatilla weather in februaryUmatilla weather in marchUmatilla weather in aprilUmatilla weather in mayUmatilla weather in juneUmatilla weather in julyUmatilla weather in augustUmatilla weather in septemberUmatilla weather in octoberUmatilla weather in novemberUmatilla weather in december

Best time to visit Umatilla:

The largest precipitation sum in Umatilla is at

  • June — 152(mm)
  • July — 151(mm)
  • September — 151(mm)
  • November — 167(mm)

    • Weather forecast in the closest to Umatilla admin centers

    Weather forecast in the closest towns to Umatilla

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    Frequently asked questions

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