Weather in Tri-Cities, Washington, United States in May
In an average May, Tri-Cities sees a daily high around 73°F and a low around 48°F, based on 1981–2026 of local climate records.
| Average high | 73°F |
|---|---|
| Typical high range | 62°F to 85°F |
| Average low | 48°F |
| Typical low range | 41°F to 57°F |
| Average daily precipitation | 0.00 in |
May records
The most extreme May on record for each metric, across 1981–2026. For rainfall, the wettest and driest are by total May accumulation.
High
Highest
101°F
1986-05-30
Lowest
51°F
1996-05-03
Low
Highest
72°F
1986-05-30
Lowest
32°F
1999-05-10
Feels-like
Highest
115°F
1983-05-29
Lowest
25°F
1985-05-11
Humidity
Highest
14.7 g/m³
1986-05-31
Lowest
3.8 g/m³
2012-05-11
Wind
Highest
34 mph
2020-05-30
Lowest
4 mph
2026-05-22
Precip
Wettest
1.97 in
2022
Driest
0.15 in
1992
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