Nez Perce County (Lewiston)
May
Weather in Nez Perce County, Idaho for May 2026
Your guide to Nez Perce County weather in May - trends and predictions
So far, May 2026 in Nez Perce County is slightly warmer than the historical average by 0.9 °F.
The forecast for the next days in Nez Perce County predicts temperatures to be around 21 °F, close to the historical average.
In general, the average temperature in Nez Perce County at the beginning of May is 22.4 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 26 °F by the end of May.
Nez Perce County experiences moderate rainfall in May, with an average of 8 rainy days and a total precipitation of 12.8 mm.
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Temperatures
Rain 🌧️
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23
Dry days
8
Rainy days
0
Snow days
20°/7°
Temperatures
13 km/h
Avg max wind
65 %
Avg humidity
Nez Perce County Weather May
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Temperatures trend during May in Nez Perce County
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May weather in Nez Perce County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| May 1 |  Sunny | 23° /5° | 0 mm | 7 | |
| May 2 | Sunny | 25° /7° | 0 mm | 7 | |
| May 3 |  Cloudy | 21° /9° | 0.1 mm | 6 | |
| May 4 |  Overcast | 20° /7° | 0 mm | 6 | |
| May 5 | Sunny | 21° /6° | 0 mm | 6 | |
| May 6 | Sunny | 23° /7° | 0 mm | 7 | |
| May 7 |  Partly cloudy | 24° /8° | 0 mm | 7 | |
| May 8 | Partly cloudy | 20° /9° | 0.3 mm | 7 | |
| May 9 | Overcast | 25° /6° | 0 mm | 6 | |
| May 10 | Sunny | 33° /12° | 0 mm | 7.2 | |
| May 11 | Sunny | 22° /7° | 0 mm | 7 | |
| May 12 | Sunny | 26° /8° | 0 mm | 0 | |
| May 13 |  Patchy rain possible | 27° /12° | 0.7 mm | 4 | |
| May 14 | Patchy rain possible | 22° /14° | 3.1 mm | 4 | |
| May 15 | Patchy rain possible | 19° /8° | 0.8 mm | 3 | |
| May 16 | Sunny | 15° /4° | 0 mm | 3 | |
| May 17 | Sunny | 18° /2° | 0 mm | 4 | |
| May 18 | Sunny | 20° /6° | 0 mm | 4 | |
| May 19 | Sunny | 22° /9° | 0 mm | 5 | |
| May 20 | Sunny | 19° /4° | 0 mm | 4 | |
| May 21 | Sunny | 18° /4° | 0 mm | 4 | |
| May 22 | Sunny | 19° /4° | 0 mm | 4 | |
| May 23 | Sunny | 19° /5° | 0 mm | 4 | |
| May 24 | Sunny | 24° /8° | 0 mm | 6 | |
| May 25 | Sunny | 30° /10° | 0 mm | 8 | |
| May 26 | Overcast | 16° /8° | 0 mm | 4 | |
| May 27 |  Fog | 22° /8° | 0 mm | 5 | |
| May 28 | Sunny | 30° /10° | 0 mm | 8 | |
| May 29 | Cloudy | 26° /12° | 0 mm | 6 | |
| May 30 | Fog | 26° /6° | 0 mm | 6 | |
| May 31 | Partly cloudy | 32° /9° | 0 mm | 8 | |
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Important Notice
Our weather forecast for Nez Perce 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 Nez Perce County forecast closer to your planned date for the most up-to-date weather information.
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Nez Perce County in May - FAQ
What are the expected maximum and minimum temperatures in Nez Perce County during May?
Enjoy moderate daytime temperatures of up to 20° and cooler nights around 7°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Nez Perce County during May?
Expect minimal rainfall in Nez Perce County during May, with a total of 12.8 mm over approximately 8 days. This minimal precipitation is unlikely to significantly impact plans.
What are the typical wind conditions in Nez Perce County during May?
The average wind speed in Nez Perce County during May is 13 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in Nez Perce County
Explore the daily rainfall trends and prepare for Nez Perce Countys May weather 💧
Typically, Nez Perce County has 8 rainy days in May with a total of 12.8 mm of rainfall.
UV exposure in Nez Perce County during May
Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
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Where is Nez Perce County?Get accurate weather forecasts for Nez Perce County, located at latitude 46.417 and longitude -117.018. Stay updated with localized weather information tailored for Nez Perce County.
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