Best year time to visit Mattawa

General weather information about Mattawa

Average annual temperature is 13.3 °C

Absolute maximum temperature: 42.4 °C

Absolute minimum temperature: -9.7 °C

Number of sunny days: 245 days

Number of rainy days: 107 days

Number of snow days: 13 days

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

Mattawa air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)10.413.315.630.937.136.939.242.433.326.414.911.1
Average daytime temperature (°C)4.67.311.316.928.630.335.234.126.318.68.76.0
Average temperature (°C)1.32.45.411.121.122.927.126.419.713.24.93.0
Average night temperature (°C)-1.1-1.11.15.915.116.819.720.014.48.72.00.9
Absolute minimum temperature (°C)-7.5-9.7-2.6-0.110.010.115.114.58.0-2.2-2.8-3.5

Mattawa 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)9.010.311.913.615.015.815.414.212.610.99.48.6
Daylight minimum duration (h)8.09.011.012.014.015.014.013.011.010.08.08.0
Sunshine mean duration (h)4.97.08.69.413.013.213.911.59.98.45.53.2
Precipitation (mm)241028385411611172959
Sunny days142015122824292523241912
Rainy days12415183626771017
Snow days541000000012

Mattawa - weather forecast by months

Mattawa weather in januaryMattawa weather in februaryMattawa weather in marchMattawa weather in aprilMattawa weather in mayMattawa weather in juneMattawa weather in julyMattawa weather in augustMattawa weather in septemberMattawa weather in octoberMattawa weather in novemberMattawa weather in december

Best time to visit Mattawa:

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

  • May — 13.0(h)
  • June — 13.2(h)
  • July — 13.9(h)
  • August — 11.5(h)

Months with the longest average daylight duration in Mattawa:

  • June — 15.8(h)
  • July — 15.4(h)

The largest precipitation sum in Mattawa is at

  • March — 28(mm)
  • April — 38(mm)
  • November — 29(mm)
  • December — 59(mm)

    • Weather forecast in the closest to Mattawa admin centers

    Weather forecast in the closest towns to Mattawa

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    Frequently asked questions

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