Weather in Tri-Cities, Washington, United States in December
In an average December, Tri-Cities sees a daily high around 41°F and a low around 29°F, based on 1981–2026 of local climate records.
| Average high | 41°F |
|---|---|
| Typical high range | 30°F to 52°F |
| Average low | 29°F |
| Typical low range | 19°F to 38°F |
| Average daily precipitation | 0.10 in |
December records
The most extreme December on record for each metric, across 1981–2026. For rainfall, the wettest and driest are by total December accumulation.
High
Highest
67°F
2021-12-01
Lowest
4°F
1990-12-29
Low
Highest
50°F
2004-12-10
Lowest
-7°F
1990-12-29
Feels-like
Highest
50°F
2004-12-10
Lowest
-29°F
1990-12-28
Humidity
Highest
9.5 g/m³
1989-12-04
Lowest
0.5 g/m³
1990-12-21
Wind
Highest
40 mph
2006-12-14
Lowest
3 mph
2020-12-29
Precip
Wettest
3.85 in
1996
Driest
0.51 in
2011
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