Washington County (Johnson City)
May
Weather in Washington County, Tennessee for May 2026
Your guide to Washington County weather in May - trends and predictions
In general, the average temperature in Washington County at the beginning of May is 20.6 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 19.6 °F by the end of May.
Washington County experiences heavy rainfall in May, with over 20 rainy days and an average total precipitation 192.3 mm.
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Temperatures
Rain 🌧️
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8
Dry days
23
Rainy days
0
Snow days
22°/13°
Temperatures
16 km/h
Avg max wind
78 %
Avg humidity
Washington County Weather May
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Temperatures trend during May in Washington County
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May weather in Washington County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| May 1 |  Moderate rain at times | 25° /17° | 1.6 mm | 6 | |
| May 2 |  Patchy rain possible | 25° /15° | 3.5 mm | 6 | |
| May 3 | Moderate rain at times | 24° /15° | 5.9 mm | 5 | |
| May 4 | Patchy rain possible | 18° /11° | 2.7 mm | 4 | |
| May 5 | Patchy rain possible | 15° /8° | 0.6 mm | 4 | |
| May 6 | Patchy rain possible | 17° /7° | 0.3 mm | 4 | |
| May 7 |  Overcast | 20° /10° | 0 mm | 5 | |
| May 8 |  Heavy rain at times | 22° /12° | 9.1 mm | 5 | |
| May 9 | Moderate rain at times | 20° /11° | 3 mm | 5 | |
| May 10 | Overcast | 22° /7° | 0.1 mm | 5 | |
| May 11 | Moderate rain at times | 23° /12° | 2 mm | 5 | |
| May 12 | Moderate or heavy rain shower | 22° /14° | 37.5 mm | 5 | |
| May 13 | Moderate or heavy rain shower | 21° /15° | 22.6 mm | 5 | |
| May 14 | Moderate or heavy rain shower | 23° /13° | 3.4 mm | 5 | |
| May 15 |  Cloudy | 28° /15° | 1.5 mm | 6 | |
| May 16 | Moderate rain at times | 26° /19° | 0.8 mm | 6 | |
| May 17 | Moderate rain at times | 26° /19° | 6.8 mm | 6 | |
| May 18 | Overcast | 25° /14° | 0 mm | 6 | |
| May 19 | Moderate or heavy rain shower | 24° /14° | 6.5 mm | 5 | |
| May 20 | Patchy rain possible | 28° /16° | 1.5 mm | 6 | |
| May 21 | Moderate rain at times | 23° /16° | 11.9 mm | 5 | |
| May 22 | Patchy rain possible | 20° /12° | 0.2 mm | 5 | |
| May 23 | Cloudy | 18° /10° | 0 mm | 4 | |
| May 24 | Overcast | 19° /8° | 0 mm | 4 | |
| May 25 | Overcast | 21° /14° | 4.7 mm | 5 | |
| May 26 | Light rain shower | 17° /14° | 5.2 mm | 4 | |
| May 27 | Overcast | 19° /13° | 0 mm | 4 | |
| May 28 | Light rain shower | 21° /13° | 14.2 mm | 5 | |
| May 29 |  Fog | 20° /13° | 3.2 mm | 5 | |
| May 30 | Moderate or heavy rain shower | 19° /12° | 43.5 mm | 4 | |
| May 31 | Overcast | 20° /11° | 0 mm | 5 | |
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Important Notice
Our weather forecast for Washington County 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 Washington County forecast closer to your planned date for the most up-to-date weather information.
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Washington County in May - FAQ
What are the expected maximum and minimum temperatures in Washington County during May?
Enjoy moderate daytime temperatures of up to 22° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Washington County during May?
Significant rainfall exceeding 192.3 mm is expected in Washington County during May, occurring over more than 23 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Washington County during May?
The average wind speed in Washington County during May is 16 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in Washington County
Explore the daily rainfall trends and prepare for Washington Countys May weather 💧
UV exposure in Washington County during May
Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
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Where is Washington County?Get accurate weather forecasts for Washington County, located at latitude 36.313 and longitude -82.353. Stay updated with localized weather information tailored for Washington County.
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