Weather in Tri-Cities in May
Tri-Cities, United States averages a high of 24.9°C (76.8°F) and low of 11.4°C (52.5°F) in May, with 4 rain days and 12.6 hours of daily sunshine. Travel score: 91.2/100 (Excellent). The best time to visit Tri-Cities is August.
High
25°C77°F
Low
11°C53°F
🌧️
4
rain days
☀️
12.6
hrs/day sunshine
💧
42%
humidity
91— Excellent
May in Tri-Cities is warm and mostly dry — ideal for sightseeing and outdoor activities.
What are the average temperatures in Tri-Cities?
How much does it rain in Tri-Cities in May?
Tri-Cities receives an average of 17.7mm of rainfall across 4 rainy days in May. The annual total is 229.1mm.
What should I pack for Tri-Cities in May?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
👕
Light layers and t-shirts
Warm weather around 25°C
🧴
Sunscreen SPF 30+
13 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
Recommended
🧥
Evening jacket or cardigan
Temperature drops 13°C from day to night
Traveling to United States in May?
Don't let a public holiday surprise you — restaurants, shops, and attractions may be closed.
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Data based on 1994–2024 averages · Last updated: 2024-12-31