Best year time to visit Hermiston

General weather information about Hermiston

Average annual temperature is 13.6 °C

Absolute maximum temperature: 43.1 °C

Absolute minimum temperature: -10.5 °C

Number of sunny days: 234 days

Number of rainy days: 125 days

Number of snow days: 6 days

Look at detailed online map of Hermiston

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

Hermiston air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)12.813.116.933.037.838.039.943.134.326.317.415.8
Average daytime temperature (°C)7.48.712.618.529.031.336.234.326.819.19.46.4
Average temperature (°C)2.62.96.211.520.923.628.026.619.512.54.93.0
Average night temperature (°C)-0.9-1.11.25.813.816.419.619.713.77.11.40.8
Absolute minimum temperature (°C)-10.5-9.8-3.20.36.89.214.511.66.3-3.8-4.7-4.4

Hermiston monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)9.011.012.014.015.015.015.014.013.011.010.08.0
Daylight mean duration (h)9.110.411.913.514.915.715.314.112.510.99.58.7
Daylight minimum duration (h)8.09.011.012.014.015.014.013.011.010.08.08.0
Sunshine mean duration (h)5.06.58.09.312.713.214.011.29.38.55.52.6
Precipitation (mm)151125367201120243149
Sunny days141611122627312520211714
Rainy days14101918530610101317
Snow days321000000000

Hermiston - weather forecast by months

Hermiston weather in januaryHermiston weather in februaryHermiston weather in marchHermiston weather in aprilHermiston weather in mayHermiston weather in juneHermiston weather in julyHermiston weather in augustHermiston weather in septemberHermiston weather in octoberHermiston weather in novemberHermiston weather in december

Best time to visit Hermiston:

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

  • May — 12.7(h)
  • June — 13.2(h)
  • July — 14.0(h)
  • August — 11.2(h)

Months with the longest average daylight duration in Hermiston:

  • June — 15.7(h)
  • July — 15.3(h)

The largest precipitation sum in Hermiston is at

  • March — 25(mm)
  • April — 36(mm)
  • November — 31(mm)
  • December — 49(mm)

    • Weather forecast in the closest to Hermiston admin centers

    Weather forecast in the closest towns to Hermiston

    Explore Hermiston

    See also
    MapTrains schedule
    Plan your trip
    AccommodationExperiencesBlog

    Frequently asked questions

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