Best year time to visit Sisters

General weather information about Sisters

Average annual temperature is 8.9 °C

Absolute maximum temperature: 38.6 °C

Absolute minimum temperature: -13.1 °C

Number of sunny days: 189 days

Number of rainy days: 146 days

Number of snow days: 30 days

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

Sisters air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)12.613.213.026.728.333.536.138.631.725.914.715.1
Average daytime temperature (°C)5.66.45.712.321.025.631.030.122.516.17.96.5
Average temperature (°C)0.00.00.45.613.217.021.120.914.18.83.02.2
Average night temperature (°C)-4.0-3.7-3.60.86.38.710.312.37.33.7-0.7-0.6
Absolute minimum temperature (°C)-13.0-13.1-10.1-5.80.81.06.95.41.1-6.5-8.1-6.7

Sisters monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)9.011.012.014.015.015.015.014.013.011.010.09.0
Daylight mean duration (h)9.310.511.913.514.815.515.114.012.511.09.68.9
Daylight minimum duration (h)8.09.011.012.014.015.014.013.011.010.09.08.0
Sunshine mean duration (h)4.86.66.69.411.813.614.012.09.78.15.13.7
Precipitation (mm)56408374355014494551158
Sunny days91159192331241917148
Rainy days171215151270711131522
Snow days5511600000111

Sisters - weather forecast by months

Sisters weather in januarySisters weather in februarySisters weather in marchSisters weather in aprilSisters weather in maySisters weather in juneSisters weather in julySisters weather in augustSisters weather in septemberSisters weather in octoberSisters weather in novemberSisters weather in december

Best time to visit Sisters:

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

  • May — 11.8(h)
  • June — 13.6(h)
  • July — 14.0(h)
  • August — 12.0(h)

Months with the longest average daylight duration in Sisters:

  • June — 15.5(h)

The largest precipitation sum in Sisters is at

  • March — 83(mm)
  • April — 74(mm)
  • December — 158(mm)

    • Weather forecast in the closest to Sisters admin centers

    Weather forecast in the closest towns to Sisters

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    MapTrains schedule
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    Frequently asked questions

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