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Weather in Washington County, Utah for May 2026

Your guide to Washington County weather in May - trends and predictions

    Snow Forecast ❄️

  • Snowfall in Washington County during May is quite rare, with fewer than 2 snowy days on average.
    According to Washington County snow forecast for May 2026, no snow is expected at the beginning of the month.

    • Temperatures

  • The forecast for the first days of May 2026 in Washington County predicts a temperature of 19.8 °F, which is cooler than the historical average.

  • In general, the average temperature in Washington County at the beginning of May is 22 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 21.3 °F by the end of May.

    • Rain 🌧️

  • Washington County experiences moderate rainfall in May, with an average of 9 rainy days and a total precipitation of 58.5 mm.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
21
Dry days
Average rainy days
9
Rainy days
Average snowy days
1
Snow days
Average temperatures
16°/5°
Temperatures
Average wind speed
19 km/h
Avg max wind
Average humidity
42 %
Avg humidity

Washington County Weather May

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

Temperatures trend during May in Washington County

See the weather trend as well as the moving average line

May weather in Washington County day by day

Click on a date for more information
April June
Date Weather Temperatures Rain Snow More
May 1 Sunny
Sunny
 23° /9° 0 mm 0 cm
May 2 Sunny
Sunny
 25° /10° 0 mm 0 cm
May 3 Sunny
Sunny
 23° /11° 0 mm 0 cm
May 4 Sunny
Sunny
 24° /8° 0 mm 0 cm
May 5 Sunny
Sunny
 24° /9° 0 mm 0 cm
May 6 Sunny
Sunny
 24° /6° 0 mm 0 cm
May 7 Moderate rain at times
Moderate rain at times
 11° /0° 2.1 mm 0 cm
May 8 Patchy rain possible
Patchy rain possible
 17° /1° 0.5 mm 0 cm
May 9 Moderate or heavy rain shower
Moderate or heavy rain shower
 19° /4° 2.6 mm 0 cm
May 10 Patchy rain possible
Patchy rain possible
 20° /4° 0.2 mm 0 cm
May 11 Patchy rain possible
Patchy rain possible
 20° /8° 0.2 mm 0 cm
May 12 Cloudy
Cloudy
 17° /7° 0 mm 0 cm
May 13 Sunny
Sunny
 10° /2° 0 mm 0 cm
May 14 Light freezing rain
Light freezing rain
 9° /0° 2.4 mm 0.6 cm
May 15 Patchy rain possible
Patchy rain possible
 14° /0° 1.2 mm 0 cm
May 16 Overcast
Overcast
 14° /2° 0 mm 0 cm
May 17 Patchy rain possible
Patchy rain possible
 13° /4° 0.1 mm 0 cm
May 18 Moderate or heavy rain shower
Moderate or heavy rain shower
 8° /1° 10.3 mm 0 cm
May 19 Partly cloudy
Partly cloudy
 8° /-1° 0 mm 0 cm
May 20 Sunny
Sunny
 16° /0° 0 mm 0 cm
May 21 Sunny
Sunny
 20° /4° 0 mm 0 cm
May 22 Sunny
Sunny
 21° /5° 0 mm 0 cm
May 23 Sunny
Sunny
 21° /8° 0 mm 0 cm
May 24 Patchy rain possible
Patchy rain possible
 19° /9° 0.1 mm 0 cm
May 25 Partly cloudy
Partly cloudy
 17° /12° 0 mm 0 cm
May 26 Sunny
Sunny
 20° /13° 0 mm 0 cm
May 27 Cloudy
Cloudy
 21° /14° 0 mm 0 cm
May 28 Overcast
Overcast
 21° /15° 0 mm 0 cm
May 29 Partly cloudy
Partly cloudy
 23° /16° 0 mm 0 cm
May 30 Overcast
Overcast
 23° /17° 0 mm 0 cm
May 31 Partly cloudy
Partly cloudy
 24° /19° 0 mm 0 cm
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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 16° and cooler nights around 5°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in Washington County during May?

Moderate rainfall is anticipated in Washington County during May, with a total of 58.5 mm spread over approximately 9 days. Considering plans for rainy days is advisable.

Will it snow in Washington County in May 2026?

Washington County typically sees 0.65 cm of snowfall during May.

What are the typical wind conditions in Washington County during May?

The average wind speed in Washington County during May is 19 km/h, suggesting breezy to windy conditions, depending on your activities.

Washington County snow forecast May 2026

Track daily snowfall levels and discover Washington County’s snowy potential this May ❄️
On average, Washington County sees 1 snowy days during May, with approximately 0.7 cm of total snowfall.

May rainfall patterns in Washington County

Explore the daily rainfall trends and prepare for Washington Countys May weather 💧
Typically, Washington County has 9 rainy days in May with a total of 58.5 mm of rainfall.

UV exposure in Washington County during May

Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
Top locations in Washington County
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FayettevilleJohnson CitySouth KingstownWashingtonZion National Park
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Location coordinates Where is Washington County?

Get accurate weather forecasts for Washington County, located at latitude 37.298 and longitude -113.026. Stay updated with localized weather information tailored for Washington County.

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