Updated October 2026
Nez Perce National Historical Park Weather by Month
Nez Perce National Historical Park is warmest in August, when the nearest NOAA climate station averages a high of 89°F and a low of 51°F, and coldest in December, with an average high of 38°F and an average low of 24°F.
These figures are NOAA's 1991–2020 climate normals, the 30-year average for each calendar month, from the nearest long-record weather station, 2.8 miles from the park's reference point. A single station cannot describe a whole park: temperatures elsewhere in Nez Perce National Historical Park can differ from these, particularly with elevation.
Warmest month
Aug
89°F avg high
Coldest month
Dec
24°F avg low
Longest days
Jun
15.5 h of daylight
Average weather at Nez Perce by month
| Month | Avg high | Avg low | Daylight |
|---|---|---|---|
| January | 38°F | 25°F | 8.8 h |
| February | 44°F | 26°F | 10.1 h |
| March | 52°F | 31°F | 11.6 h |
| April | 59°F | 36°F | 13.3 h |
| May | 68°F | 43°F | 14.8 h |
| June | 74°F | 48°F | 15.5 h |
| July | 86°F | 54°F | 15.2 h |
| August | 89°F | 51°F | 14.0 h |
| September | 77°F | 45°F | 12.3 h |
| October | 62°F | 37°F | 10.7 h |
| November | 47°F | 29°F | 9.2 h |
| December | 38°F | 24°F | 8.5 h |
NOAA 1991–2020 climate normals from station USC00105013, 2.8 miles from the park's reference point. Daylight is the monthly average, computed from the park's latitude. Each month links to how crowded Nez Perce is at that time of year.
Nez Perce weather by season
Winter: December to February
Average highs climb from 38°F in December to 44°F in February, with average lows near 25°F. The average low is at or below freezing in all three months. Daylight is at its shortest, about 8.5 hours in December.
Spring: March to May
Average highs climb from 52°F in March to 68°F in May, with average lows between 31°F and 43°F. The average low is at or below freezing in March. Daylight lengthens from about 11.6 hours in March to 14.8 in May.
Summer: June to August
Average highs climb from 74°F in June to 89°F in August, with average lows between 48°F and 54°F. Daylight is at its longest, about 15.5 hours in June.
Fall: September to November
Average highs fall from 77°F in September to 47°F in November, with average lows between 29°F and 45°F. The average low is at or below freezing in November. Daylight shortens from about 12.3 hours in September to 9.2 in November.
What the National Park Service says about the weather
Elevations in the Park range from 700 feet above sea level to over 8,000, providing a wide range of climatic conditions, that follow the four seasons. Be prepared for very warm weather in the summer months, in particular in the river valleys. The spring and fall are moderate and comfortable. Winter conditions can be severe in the higher elevations, with snow and ice making travel difficult and dangerous. Please visit the National Weather Service for comprehensive weather information.
Weather description courtesy of the National Park Service — official park site.
Today's forecast for Nez Perce
Averages describe a typical month, not this week. For current conditions and the seven-day outlook, the National Weather Service issues a forecast for the park's reference point at 46.07°N, 115.88°W. It covers that one spot, so other elevations in the park can differ from it, as they do from the averages above.
National Weather Service forecast for Nez Perce National Historical Park →
Weather and crowds together
August is both the warmest month and the busiest, with about 1.4× the visitors of the park's average month. January is the quietest. To see those crowds set against the weather for all twelve months, read the best time to visit Nez Perce National Historical Park. For hotels, cabins and rentals close to the park, see where to stay near Nez Perce.
Where to stay near Nez Perce
Picked a month for Nez Perce National Historical Park? Compare hotels, cabins and vacation rentals near the park with live availability and prices.
Top-rated places to stay near Nez Perce
Prices for Oct 16–18, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a trip to Nez Perce?
Get crowd forecasts and lodging deals for Nez Perce by email. No spam, unsubscribe anytime.
Frequently Asked Questions
August is the warmest month at Nez Perce National Historical Park, with an average high of 89°F and an average low of 51°F. That is the 1991–2020 average at the nearest long-record NOAA station, 2.8 miles from the park's reference point. Temperatures inside the park can differ, particularly with elevation.
December is the coldest month at Nez Perce National Historical Park, with an average low of 24°F and an average high of 38°F, based on NOAA 1991–2020 climate normals.
Daylight at Nez Perce National Historical Park runs from about 8.5 hours a day in December to about 15.5 hours in June, computed from the park's latitude.
Weather at nearby parks
Keep exploring
Sources: NOAA NCEI U.S. Climate Normals 1991–2020 (station USC00105013), daylight computed from latitude, weather description from the National Park Service, crowd levels from National Park Service Visitor Use Statistics (1979–2025). Updated 2026-10-11. Lodging results are provided by Stay22; WhenToVisitParks may earn a commission from bookings, at no extra cost to you.