Best year time to visit Sumas

General weather information about Sumas

Average annual temperature is 9.8 °C

Absolute maximum temperature: 32.5 °C

Absolute minimum temperature: -8.9 °C

Number of sunny days: 165 days

Number of rainy days: 195 days

Number of snow days: 5 days

Look at detailed online map of Sumas

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

Sumas air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)10.99.315.624.532.029.330.632.527.523.315.712.9
Average daytime temperature (°C)6.45.710.412.021.121.425.326.420.614.98.57.5
Average temperature (°C)3.72.24.46.714.415.018.218.914.49.94.74.9
Average night temperature (°C)1.7-0.10.32.58.99.912.413.29.96.32.12.8
Absolute minimum temperature (°C)-5.1-8.9-4.8-3.52.75.39.19.64.5-5.2-3.5-2.1

Sumas monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)9.010.012.014.015.016.016.015.013.011.09.08.0
Daylight mean duration (h)8.810.211.913.715.316.115.714.312.610.89.28.3
Daylight minimum duration (h)8.09.010.012.014.015.015.013.011.09.08.08.0
Sunshine mean duration (h)2.63.37.36.211.010.913.011.78.85.44.32.3
Precipitation (mm)1041239815824371823105112215230
Sunny days10496211827241216144
Rainy days1922212410124718151627
Snow days221000000000

Sumas - weather forecast by months

Sumas weather in januarySumas weather in februarySumas weather in marchSumas weather in aprilSumas weather in maySumas weather in juneSumas weather in julySumas weather in augustSumas weather in septemberSumas weather in octoberSumas weather in novemberSumas weather in december

Best time to visit Sumas:

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

  • May — 11.0(h)
  • June — 10.9(h)
  • July — 13.0(h)
  • August — 11.7(h)

Months with the longest average daylight duration in Sumas:

  • June — 16.1(h)
  • July — 15.7(h)

The largest precipitation sum in Sumas is at

  • April — 158(mm)
  • November — 215(mm)
  • December — 230(mm)

    • Weather forecast in the closest to Sumas admin centers

    Weather forecast in the closest towns to Sumas

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    Frequently asked questions

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