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Weather in Tri-Cities for May 2025

Your guide to Tri-Cities weather in May - trends and predictions

    Temperatures

  • In general, the average temperature in Tri-Cities at the beginning of May is 21.1 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 25.6 °F by the end of May.

    • Rain 🌧️

  • Tri-Cities sees moderate rainfall in May, averaging 6 rainy days.

    • More

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Average dry days
25
Dry days
Average rainy days
6
Rainy days
Average snowy days
0
Snow days
Average temperatures
27°/13°
Temperatures
Average wind speed
17 km/h
Avg max wind
Average humidity
53 %
Avg humidity

Tri-Cities in May average weather

Move between months or click on a day
April
June
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Patchy rain possible
20°
2
Overcast
25°
3
Partly cloudy
30°
4
Overcast
25°
5
Moderate or heavy rain shower
13°
6
Overcast
20°
7
Patchy rain possible
15°
8
Moderate or heavy rain shower
20°
9
Patchy rain possible
18°
10
Sunny
23°
11
Sunny
25°
12
Sunny
29°
13
Sunny
32°
14
Cloudy
31°
15
Heavy rain at times
31°
16
Overcast
30°
17
Partly cloudy
30°
18
Sunny
33°
19
Sunny
34°
20
Patchy rain possible
36°
21
Patchy rain possible
30°
22
Sunny
20°
23
Sunny
23°
24
Sunny
25°
25
Sunny
23°
26
Partly cloudy
26°
27
Partly cloudy
28°
28
Overcast
27°
29
Sunny
25°
30
Cloudy
25°
31
Sunny
25°
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Temperatures trend during May in Tri-Cities

See the weather trend as well as the moving average line

May weather day by day

Click on a date for more information
April June
Date Weather Temperatures Rain UV More
May 1 Patchy rain possible
Patchy rain possible
 20° /11° 1.3 mm 5
May 2 Overcast
Overcast
 25° /11° 0 mm 6
May 3 Partly cloudy
Partly cloudy
 30° /12° 0 mm 8
May 4 Overcast
Overcast
 25° /13° 0 mm 6
May 5 Moderate or heavy rain shower
Moderate or heavy rain shower
 13° /11° 5.9 mm 3
May 6 Overcast
Overcast
 20° /8° 0.1 mm 5
May 7 Patchy rain possible
Patchy rain possible
 15° /9° 0.2 mm 4
May 8 Moderate or heavy rain shower
Moderate or heavy rain shower
 20° /8° 5.7 mm 5
May 9 Patchy rain possible
Patchy rain possible
 18° /10° 1 mm 4
May 10 Sunny
Sunny
 23° /8° 0 mm 6
May 11 Sunny
Sunny
 25° /11° 0 mm 7
May 12 Sunny
Sunny
 29° /12° 0 mm 7
May 13 Sunny
Sunny
 32° /14° 0 mm 8
May 14 Cloudy
Cloudy
 31° /17° 0 mm 7
May 15 Heavy rain at times
Heavy rain at times
 31° /17° 1.5 mm 7
May 16 Overcast
Overcast
 30° /17° 1.2 mm 7
May 17 Partly cloudy
Partly cloudy
 30° /16° 0 mm 8
May 18 Sunny
Sunny
 33° /17° 0.2 mm 8
May 19 Sunny
Sunny
 34° /17° 0.1 mm 8
May 20 Patchy rain possible
Patchy rain possible
 36° /19° 0.1 mm 8
May 21 Patchy rain possible
Patchy rain possible
 30° /17° 0.1 mm 7
May 22 Sunny
Sunny
 20° /10° 0.7 mm 5
May 23 Sunny
Sunny
 23° /8° 0 mm 6
May 24 Sunny
Sunny
 25° /9° 0 mm 7
May 25 Sunny
Sunny
 23° /11° 0 mm 6
May 26 Partly cloudy
Partly cloudy
 26° /10° 0 mm 7
May 27 Partly cloudy
Partly cloudy
 28° /12° 0 mm 7
May 28 Overcast
Overcast
 27° /13° 0.1 mm 6
May 29 Sunny
Sunny
 25° /10° 0 mm 6
May 30 Cloudy
Cloudy
 25° /10° 0 mm 6
May 31 Sunny
Sunny
 25° /10° 0 mm 7
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Important Notice
Our weather forecast for Tri-Cities in May is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Tri-Cities forecast closer to your planned date for the most up-to-date weather information.

Tri-Cities in May - FAQ

What are the expected maximum and minimum temperatures in Tri-Cities during May?
Enjoy moderate daytime temperatures of up to 27° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Tri-Cities during May?
Expect minimal rainfall in Tri-Cities during May, with a total of 18.9 mm over approximately 6 days. This minimal precipitation is unlikely to significantly impact plans.
What are the typical wind conditions in Tri-Cities during May?
The average wind speed in Tri-Cities during May is 17 km/h, suggesting breezy to windy conditions, depending on your activities.

May rainfall patterns in Tri-Cities

Explore the daily rainfall trends and prepare for Tri-Citiess May weather 💧

UV exposure in Tri-Cities during May

Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️

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Location coordinates Where is Tri-Cities?

Get accurate weather forecasts for Tri-Cities, located at latitude 46.245 and longitude -119.196. Stay updated with localized weather information tailored for Tri-Cities.

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