1 to 31°C
temperature
3189 hours
sunshine per day
158 mm
rain
257 days
dry
86 days
rain
22 days
snow

Climate of Mattawa

Mattawa has a semi-arid climate. It hardly rains here. The average annual temperature for Mattawa is 16° degrees and there is about 158 mm of rain in a year. It is dry for 244 days a year with an average humidity of 59% and an UV-index of 4.

Climate averages for the whole year

  • Day: the average daily temperature during the day is between 1°C and 31°C
  • Night:the average nighttime temperature is between -5°C and 17°C
  • Rain: it rains 86 days and there is a total of approximately 158 mm rainfall
  • Snow: it snows an average of 22 days per year
  • Sun hours: throughout the year there are 3189 sun hours
Maximum temperature: between 1°C and 31°C
Warmest month: 31°C in July
Coldest month: 1°C in December
Night temperature: between -5°C and 17°C
Dry days: 257 days
Days with rain: 86 days
Days with snow: 22 days
Total rain sum: 158 mm
Hours of sunshine: 3189 hours

Temperature graph

This graph shows the average maximum temperature (red) and minimum temperature (blue) for Mattawa.

Precipitation graph

This graph shows the average amount of rainfall per month for Mattawa.

Climate table of Mattawa

In this climate table you can see at a glance what the average weather per month is for Mattawa. The data has been collected over a 30-year period, from which an average per month has been derived. From year to year the differences may be larger or smaller, but with this climate table you have a good idea of what the weather for Mattawa might be like in a given month.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Day temp. (°C) 2 5 11 16 22 26 31 31 25 16 7 1
Night temp. (°C) -4 -2 2 5 9 12 16 17 13 7 1 -5
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Precipitation (mm) 21 16 18 11 13 11 6 5 5 15 14 23
Days with rain 8 8 11 9 7 5 4 3 4 9 10 8
Days with snow 6 5 2 - - - - - - - 2 7
Dry days 17 15 18 21 24 25 27 28 26 22 18 16
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Sun hours per day 5 5 8 10 11 12 12 12 11 7 6 5
Wind force (Bft) 2 2 2 3 2 2 2 2 2 2 2 2
UV-index 2 2 3 4 5 6 7 5 5 3 2 2

Best time to visit Mattawa

The best time to visit Mattawa in the state of Washington is from May through September. In this period you have a warm temperature and almost no precipitation. The highest average temperature in Mattawa is 31°C in July and the lowest is 1°C in December.

Climate of Mattawa by month

What is the average climate in a given month for Mattawa? Click on a month to see all monthly averages for sunshine, maximum and minimum temperatures, percent chance of rain per day, snowfall and number of rainy days.

Mattawa weather experiences

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