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Weather in Grant County, Washington for May 2026

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

    Temperatures

  • In general, the average temperature in Grant County at the beginning of May is 23.1 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 27 °F by the end of May.

  • Rain 🌧️

  • With an average of 3 rainy days, Grant County experiences minimal rainfall in May.

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Average dry days
28
Dry days
Average rainy days
3
Rainy days
Average snowy days
0
Snow days
Average temperatures
22°/8°
Temperatures
Average wind speed
18 km/h
Avg max wind
Average humidity
51 %
Avg humidity

Grant County Weather May

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Temperatures trend during May in Grant County

See the weather trend as well as the moving average line

May weather in Grant County day by day

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Date Weather Temperatures Rain UV More
May 1 Sunny
Sunny
25° /8° 0 mm 7
May 2 Sunny
Sunny
28° /8° 0 mm 7
May 3 Overcast
Overcast
18° /10° 0 mm 4
May 4 Sunny
Sunny
20° /3° 0 mm 6
May 5 Sunny
Sunny
22° /6° 0 mm 6
May 6 Sunny
Sunny
24° /6° 0 mm 6
May 7 Partly cloudy
Partly cloudy
25° /8° 0.2 mm 7
May 8 Cloudy
Cloudy
19° /6° 0 mm 4
May 9 Cloudy
Cloudy
24° /6° 0 mm 5
May 10 Overcast
Overcast
25° /13° 0 mm 6
May 11 Moderate or heavy rain shower
Moderate or heavy rain shower
17° /11° 2.5 mm 4
May 12 Cloudy
Cloudy
19° /8° 0 mm 4
May 13 Overcast
Overcast
19° /8° 0 mm 4
May 14 Overcast
Overcast
19° /8° 0 mm 4
May 15 Overcast
Overcast
21° /7° 0 mm 5
May 16 Overcast
Overcast
19° /9° 0.7 mm 4
May 17 Moderate rain at times
Moderate rain at times
19° /10° 1.8 mm 4
May 18 Patchy rain possible
Patchy rain possible
16° /7° 0.2 mm 4
May 19 Heavy rain at times
Heavy rain at times
16° /5° 1.8 mm 4
May 20 Overcast
Overcast
17° /8° 0 mm 4
May 21 Overcast
Overcast
18° /5° 0 mm 4
May 22 Overcast
Overcast
19° /11° 0 mm 4
May 23 Partly cloudy
Partly cloudy
22° /9° 0 mm 6
May 24 Cloudy
Cloudy
25° /10° 0 mm 6
May 25 Fog
Fog
31° /8° 0 mm 7
May 26 Overcast
Overcast
23° /14° 0 mm 5
May 27 Partly cloudy
Partly cloudy
24° /7° 0 mm 6
May 28 Sunny
Sunny
32° /10° 0 mm 8
May 29 Overcast
Overcast
22° /14° 0 mm 5
May 30 Mist
Mist
26° /7° 0 mm 6
May 31 Partly cloudy
Partly cloudy
31° /11° 0 mm 8
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Important Notice
Our weather forecast for Grant 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 Grant County forecast closer to your planned date for the most up-to-date weather information.

Grant County in May - FAQ

What are the expected maximum and minimum temperatures in Grant County during May?
Enjoy moderate daytime temperatures of up to 22° and cooler nights around 8°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Grant County during May?
Rainfall in Grant County during May is rare to nonexistent, with the total expected rainfall being less than 10 mm and approximately 3 days seeing any precipitation. Planning without the concern for rain is generally straightforward during this very dry period.
What are the typical wind conditions in Grant County during May?
The average wind speed in Grant County during May is 18 km/h, suggesting breezy to windy conditions, depending on your activities.

May rainfall patterns in Grant County

Explore the daily rainfall trends and prepare for Grant Countys May weather 💧

UV exposure in Grant County during May

Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
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Location coordinates Where is Grant County?

Get accurate weather forecasts for Grant County, located at latitude 47.13 and longitude -119.278. Stay updated with localized weather information tailored for Grant County.

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