Weather in Tri-Cities, Washington, United States in August
In an average August, Tri-Cities sees a daily high around 89°F and a low around 62°F, based on 1981–2026 of local climate records.
| Average high | 89°F |
|---|---|
| Typical high range | 80°F to 99°F |
| Average low | 62°F |
| Typical low range | 56°F to 69°F |
| Average daily precipitation | 0.00 in |
August records
The most extreme August on record for each metric, across 1981–2026. For rainfall, the wettest and driest are by total August accumulation.
High
Highest
108°F
2009-08-01
Lowest
64°F
1999-08-30
Low
Highest
77°F
2021-08-03
Lowest
48°F
2008-08-31
Feels-like
Highest
122°F
2009-08-01
Lowest
43°F
2008-08-31
Humidity
Highest
16.8 g/m³
2021-08-01
Lowest
4.8 g/m³
2005-08-14
Wind
Highest
29 mph
2015-08-14
Lowest
4 mph
2018-08-06
Precip
Wettest
0.98 in
1990
Driest
0.01 in
1988
See Tri-Cities's live weather grade →
Visiting Tri-Cities in August? See how its comfort stacks up against where you live.
Compare Tri-Cities with your city →