7 to 27°C
temperature
2710 hours
sunshine per day
152 mm
rain
274 days
dry
88 days
rain
3 days
snow

Climate of Tri-City

Tri-City has a mediterranean climate. The summers are warm and dry, and the temperature is cold in the winter. The average annual temperature for Tri-City is 32° degrees and there is about 61 inch of rain in a year. It is dry for 254 days a year with an average humidity of 79% and an UV-index of 3.

Climate averages for the whole year

  • Day: the average daily temperature during the day is between 7°C and 27°C
  • Night:the average nighttime temperature is between 0°C and 9°C
  • Rain: it rains 88 days and there is a total of approximately 152 mm rainfall
  • Snow: it snows an average of 3 days per year
  • Sun hours: throughout the year there are 2710 sun hours
Maximum temperature: between 7°C and 27°C
Warmest month: 27°C in August
Coldest month: 7°C in December
Night temperature: between 0°C and 9°C
Dry days: 274 days
Days with rain: 88 days
Days with snow: 3 days
Total rain sum: 152 mm
Hours of sunshine: 2710 hours

Temperature graph

This graph shows the average maximum temperature (red) and minimum temperature (blue) for Tri-City.

Precipitation graph

This graph shows the average amount of rainfall per month for Tri-City.

Climate table of Tri-City

In this climate table you can see at a glance what the average weather per month is for Tri-City. 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 Tri-City might be like in a given month.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Day temp. (°F) 48 49 52 57 64 70 80 80 75 64 52 45
Night temp. (°F) 34 33 34 35 38 42 47 47 45 41 37 32
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Precipitation (inch) 7 11 8 6 3 3 2 1 1 4 7 8
Days with rain 9 10 12 10 7 6 4 2 3 6 8 11
Days with snow - 1 1 - - - - - - - - 1
Dry days 22 17 18 20 24 24 27 29 27 25 22 19
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Sun hours per day 5 4 6 7 9 10 12 12 10 6 5 4
Wind force (Bft) 2 2 2 2 2 2 2 1 1 1 2 2
UV-index 2 2 3 3 4 5 6 4 3 3 2 2

Best time to visit Tri-City

The best time to visit Tri-City in the state of Oregon is from May through October. In this period you have a warm temperature and almost no precipitation. The highest average temperature in Tri-City is 80°F in July and the lowest is 45°F in December.

Climate of Tri-City by month

What is the average climate in a given month for Tri-City? 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.

Tri-City weather experiences

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