Climate normals · 1970–2000
Tri-Cities Climate
Tri-Cities is a city in United States (WA) with a population of about 244,036. Its average annual temperature is 11.9°C (53°F), with roughly 207 mm of rain per year.
11.9°C
Avg Temp
207
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
Tri-Cities Climate
Tri-Cities has an average annual temperature of 11.9°C (53°F) and receives about 207 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
11.9°C
Avg Temp
207
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | 1° / 33° | 28 mm |
| February | 4° / 39° | 21 mm |
| March | 8° / 46° | 19 mm |
| April | 12° / 53° | 15 mm |
| May | 16° / 61° | 17 mm |
| June | 20° / 68° | 11 mm |
| July | 24° / 75° | 6 mm |
| August | 23° / 74° | 9 mm |
| September | 18° / 64° | 9 mm |
| October | 12° / 53° | 15 mm |
| November | 5° / 42° | 28 mm |
| December | 1° / 34° | 29 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Tri-Cities
The most comfortable months to visit Tri-Cities are typically June, August and July, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 32°C high). The coldest is January (near -3°C low). December is usually the wettest month.
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Frequently Asked Questions
The most comfortable months to visit Tri-Cities are typically June, August and July, when temperatures are mildest and rainfall is relatively low (1970–2000 climate normals).
Tri-Cities, United States has an average annual temperature of 11.9°C and about 207 mm of precipitation per year. The warmest month is July and the coldest is January.
In July, the hottest month, daily highs in Tri-Cities average about 32°C (90°F).
Monthly climate normals (1970–2000) sampled from WorldClim 2.1 at ~9 km resolution. Humidity derived from vapor pressure. City coordinates and population from GeoNames.