Best Time to Visit Tri-Cities
Best time: Jul, Jun, Aug, May.
Jul is warmest (32°C high); Dec is rainiest (28 mm).
Tri-Cities weather by month
| Month | High °C | Low °C | Rain mm | Sun hrs |
|---|---|---|---|---|
| Jan | 4.4 | -2.7 | 27 | 1.9 |
| Feb | 8.5 | -0.9 | 20 | 3.5 |
| Mar | 14.3 | 1.9 | 19 | 5.7 |
| Apr | 19 | 4.8 | 14 | 8 |
| May | 23.6 | 8.7 | 16 | 9.7 |
| Jun | 27.8 | 12.5 | 10 | 11.1 |
| Jul | 32 | 15.2 | 6 | 11.8 |
| Aug | 31.7 | 14.6 | 9 | 10.2 |
| Sep | 26.1 | 9.7 | 9 | 7.5 |
| Oct | 19 | 4.5 | 15 | 4.6 |
| Nov | 10 | 1.2 | 27 | 2.3 |
| Dec | 4.8 | -2.3 | 28 | 1.5 |
Average high temperature
Best months by activity
Overall: JulJunAugMay
Beaches: JulAugJunSep
Hiking: JunMaySepApr
Sightseeing: JulJunAugMay
Tri-Cities quick facts
What to pack
Cold months (Jan, Feb, Nov, Dec): warm layers and a coat.
Frequently asked questions
When is the best time to visit Tri-Cities?
Jul, Jun, Aug, May.
What is the rainiest month?
Dec, about 28 mm.
What is the warmest month?
Jul, with average highs of 32°C.
Where to stay
Book Tri-Cities hotels · Tri-Cities tours & activities
All destinations · Best time to visit New York · Best time to visit Los Angeles · Best time to visit Miami · Best time to visit San Francisco
Climate data: Open-Meteo Historical (ERA5), 1991–2020 climate normals.
Licensed under CC BY 4.0.
Open-Meteo.