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Nez Perce County (Lewiston)
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United States weather

Weather in Nez Perce County, Idaho for May 2026

Your guide to Nez Perce County weather in May - trends and predictions

    Temperatures

  • In general, the average temperature in Nez Perce County at the beginning of May is 21.3 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 26 °F by the end of May.

    • Rain 🌧️

  • Nez Perce County experiences moderate rainfall in May, with an average of 8 rainy days and a total precipitation of 12.8 mm.

    • More

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

Average dry days
23
Dry days
Average rainy days
8
Rainy days
Average snowy days
0
Snow days
Average temperatures
20°/7°
Temperatures
Average wind speed
13 km/h
Avg max wind
Average humidity
65 %
Avg humidity

Nez Perce 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
27°
3
Cloudy
18°
4
Overcast
16°
5
Sunny
19°
6
Sunny
21°
7
Partly cloudy
25°
8
Partly cloudy
18°
9
Overcast
25°
10
Overcast
23°
11
Overcast
19°
12
Patchy rain possible
15°
13
Patchy rain possible
14°
14
Patchy rain possible
16°
15
Partly cloudy
16°
16
Moderate rain at times
14°
17
Heavy rain at times
17°
18
Moderate rain at times
13°
19
Patchy rain possible
15°
20
Patchy rain possible
15°
21
Patchy rain possible
17°
22
Patchy rain possible
16°
23
Overcast
20°
24
Sunny
24°
25
Sunny
30°
26
Overcast
16°
27
Fog
22°
28
Sunny
30°
29
Cloudy
26°
30
Fog
26°
31
Partly cloudy
32°

Temperatures trend during May in Nez Perce County

See the weather trend as well as the moving average line

May weather in Nez Perce County day by day

Click on a date for more information
April June
Date Weather Temperatures Rain UV More
May 1 Sunny
Sunny
 23° /5° 0 mm 6
May 2 Sunny
Sunny
 27° /5° 0 mm 7
May 3 Cloudy
Cloudy
 18° /8° 0.1 mm 4
May 4 Overcast
Overcast
 16° /5° 0 mm 4
May 5 Sunny
Sunny
 19° /3° 0 mm 5
May 6 Sunny
Sunny
 21° /4° 0 mm 6
May 7 Partly cloudy
Partly cloudy
 25° /6° 0 mm 7
May 8 Partly cloudy
Partly cloudy
 18° /11° 0.6 mm 5
May 9 Overcast
Overcast
 25° /6° 0 mm 6
May 10 Overcast
Overcast
 23° /11° 0 mm 5
May 11 Overcast
Overcast
 19° /10° 2 mm 4
May 12 Patchy rain possible
Patchy rain possible
 15° /7° 0.7 mm 4
May 13 Patchy rain possible
Patchy rain possible
 14° /5° 0.2 mm 3
May 14 Patchy rain possible
Patchy rain possible
 16° /7° 0.5 mm 4
May 15 Partly cloudy
Partly cloudy
 16° /5° 0 mm 5
May 16 Moderate rain at times
Moderate rain at times
 14° /8° 2.5 mm 3
May 17 Heavy rain at times
Heavy rain at times
 17° /7° 3.4 mm 4
May 18 Moderate rain at times
Moderate rain at times
 13° /7° 1.8 mm 3
May 19 Patchy rain possible
Patchy rain possible
 15° /3° 0.2 mm 4
May 20 Patchy rain possible
Patchy rain possible
 15° /4° 0.5 mm 4
May 21 Patchy rain possible
Patchy rain possible
 17° /5° 0.1 mm 4
May 22 Patchy rain possible
Patchy rain possible
 16° /8° 0.2 mm 4
May 23 Overcast
Overcast
 20° /5° 0 mm 4
May 24 Sunny
Sunny
 24° /8° 0 mm 6
May 25 Sunny
Sunny
 30° /10° 0 mm 8
May 26 Overcast
Overcast
 16° /8° 0 mm 4
May 27 Fog
Fog
 22° /8° 0 mm 5
May 28 Sunny
Sunny
 30° /10° 0 mm 8
May 29 Cloudy
Cloudy
 26° /12° 0 mm 6
May 30 Fog
Fog
 26° /6° 0 mm 6
May 31 Partly cloudy
Partly cloudy
 32° /9° 0 mm 8
Next
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 💧

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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Lewiston
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Location coordinates 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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