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Washington United States

Weather in Tri-Cities for August 2025

Your guide to Tri-Cities weather in August - trends and predictions
  • In general, the average temperature in Tri-Cities at the beginning of August is 36.4 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 32 °F by the end of August.

  • With an average of 4 rainy days, Tri-Cities experiences minimal rainfall in August, ensuring that most days remain pleasantly dry.

  • New! Chat with our AI weatherman - it’s amazing and free.
Average dry days
27
Dry days
Average rainy days
4
Rainy days
Average snowy days
0
Snow days
Average temperatures
34°/18°
Temperatures
Average wind speed
18 km/h
Avg max wind
Average humidity
36 %
Avg humidity

Tri-Cities in August average weather

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Temperatures trend during August in Tri-Cities

See the weather trend as well as the moving average line

August weather day by day

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Date Weather Temperatures Rain UV More
Aug. 1 Sunny
Sunny
38° /18° 0 mm 10
Aug. 2 Sunny
Sunny
41° /21° 0 mm 10
Aug. 3 Sunny
Sunny
39° /20° 0 mm 10
Aug. 4 Moderate or heavy rain shower
Moderate or heavy rain shower
35° /22° 0.9 mm 8
Aug. 5 Patchy rain possible
Patchy rain possible
36° /20° 0.1 mm 8
Aug. 6 Overcast
Overcast
33° /19° 0.1 mm 8
Aug. 7 Moderate or heavy rain shower
Moderate or heavy rain shower
33° /19° 3.3 mm 8
Aug. 8 Cloudy
Cloudy
35° /18° 0 mm 8
Aug. 9 Cloudy
Cloudy
36° /19° 0 mm 8
Aug. 10 Sunny
Sunny
34° /19° 0 mm 9
Aug. 11 Sunny
Sunny
34° /17° 0 mm 9
Aug. 12 Partly cloudy
Partly cloudy
33° /17° 0 mm 8
Aug. 13 Sunny
Sunny
33° /18° 0 mm 8
Aug. 14 Sunny
Sunny
35° /18° 0 mm 9
Aug. 15 Sunny
Sunny
38° /19° 0 mm 9
Aug. 16 Sunny
Sunny
36° /20° 0 mm 9
Aug. 17 Cloudy
Cloudy
39° /20° 0 mm 9
Aug. 18 Partly cloudy
Partly cloudy
34° /20° 0 mm 9
Aug. 19 Sunny
Sunny
32° /15° 0 mm 8
Aug. 20 Overcast
Overcast
32° /16° 0.3 mm 8
Aug. 21 Overcast
Overcast
30° /18° 0 mm 7
Aug. 22 Patchy rain possible
Patchy rain possible
29° /17° 0.1 mm 7
Aug. 23 Sunny
Sunny
27° /13° 0.4 mm 7
Aug. 24 Sunny
Sunny
28° /12° 0 mm 7
Aug. 25 Overcast
Overcast
30° /15° 0 mm 7
Aug. 26 Sunny
Sunny
34° /14° 0 mm 9
Aug. 27 Partly cloudy
Partly cloudy
34° /15° 0 mm 8
Aug. 28 Sunny
Sunny
33° /14° 0.2 mm 8
Aug. 29 Patchy rain possible
Patchy rain possible
30° /14° 1.6 mm 7
Aug. 30 Partly cloudy
Partly cloudy
32° /15° 0 mm 8
Aug. 31 Overcast
Overcast
31° /16° 0 mm 7
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Important Notice
Our weather forecast for Tri-Cities in August is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Tri-Cities forecast closer to your planned date for the most up-to-date weather information.

Tri-Cities in August - FAQ

What are the expected maximum and minimum temperatures in Tri-Cities during August?
Expect warm days with temperatures around 34°, cooling to mild conditions of 18° after sunset. Perfect for those who enjoy warm weather.
How much rainfall should be expected in Tri-Cities during August?
Expect minimal rainfall in Tri-Cities during August, with a total of 12.4 mm over approximately 4 days. This minimal precipitation is unlikely to significantly impact plans.
What are the typical wind conditions in Tri-Cities during August?
The average wind speed in Tri-Cities during August is 18 km/h, suggesting breezy to windy conditions, depending on your activities.

August rainfall patterns in Tri-Cities

Explore the daily rainfall trends and prepare for Tri-Citiess August weather 💧

UV exposure in Tri-Cities during August

Stay informed about UV levels for safe outdoor activities throughout the month of August ☀️

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Location coordinates Where is Tri-Cities?

Get accurate weather forecasts for Tri-Cities, located at latitude 46.245 and longitude -119.196. Stay updated with localized weather information tailored for Tri-Cities.

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