Best time to visit Nez Perce National Historical Park
September is the best balance at Nez Perce National Historical Park: mild and dry for the park (an average high of 73°F), with busy crowds. June is busiest, with about 40,000 visitors. February is the quietest, with highs near 42°F.
- Quiet
- Moderate
- Busy
- Very busy
- Few or no visits (may be closed)
- Best months
Month by month
- Station
- Grangeville, ID USC00103771
- Lat / lon
- 45.94, -116.12
- Elevation
- 3,300 ft
- From park center
- 12.6 mi
- Second station
- Kamiah, ID 1,210 ft
- Normals
- 1991–2020
- Visits
- 2023–2025
| Field | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sepbest | Oct | Nov | Dec | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High, °F | 38° | 42° | 49° | 56° | 64° | 70° | 82° | 83° | 73° | 58° | 45° | 37° | 58° |
| Low, °F | 25° | 25° | 29° | 34° | 42° | 48° | 54° | 53° | 45° | 37° | 29° | 24° | 37° |
| High at 1,210 ft, °F | 38° | 46° | 55° | 63° | 73° | 79° | 90° | 91° | 80° | 62° | 45° | 36° | 63° |
| Precipitation, in | 1.3 | 1.4 | 2.3 | 2.9 | 3.4 | 3.3 | 1.1 | 0.9 | 1.3 | 1.9 | 1.9 | 1.8 | 23.5 |
| Snow, in | 7.9 | 6.2 | 6.0 | 3.2 | 0.2 | 0 | 0 | 0 | 0 | 0.6 | 5.0 | 9.6 | 38.7 |
| Daylight, h:mm | 9:02 | 10:17 | 11:46 | 13:28 | 14:54 | 15:42 | 15:23 | 14:08 | 12:29 | 10:51 | 9:24 | 8:41 | |
| Visitors, thousands | 23 | 23 | 27 | 30 | 37 | 40 | 34 | 34 | 32 | 30 | 24 | 21 | 355 |
| Crowds | Busy | Busy | Busy | Busy | Very busy | Very busy | Very busy | Very busy | Busy | Busy | Busy | Moderate | |
| Weather | Cold | Cool | Cool | Mild, wet | Mild, wet | Mild, wet | Hot | Hot | Mild | Mild, wet | Cool | Cold |
| Month | High °F | Low °F | High at 1,210 ft | Precip., in | Snow, in | Daylight | Visitors | Crowds | Weather |
|---|---|---|---|---|---|---|---|---|---|
| January | 38° | 25° | 38° | 1.3 | 7.9 | 9:02 | 23,000 | Busy | Cold |
| February | 42° | 25° | 46° | 1.4 | 6.2 | 10:17 | 23,000 | Busy | Cool |
| March | 49° | 29° | 55° | 2.3 | 6.0 | 11:46 | 27,000 | Busy | Cool |
| April | 56° | 34° | 63° | 2.9 | 3.2 | 13:28 | 30,000 | Busy | Mild, wet |
| May | 64° | 42° | 73° | 3.4 | 0.2 | 14:54 | 37,000 | Very busy | Mild, wet |
| June | 70° | 48° | 79° | 3.3 | 0 | 15:42 | 40,000 | Very busy | Mild, wet |
| July | 82° | 54° | 90° | 1.1 | 0 | 15:23 | 34,000 | Very busy | Hot |
| August | 83° | 53° | 91° | 0.9 | 0 | 14:08 | 34,000 | Very busy | Hot |
| Septemberbest | 73° | 45° | 80° | 1.3 | 0 | 12:29 | 32,000 | Busy | Mild |
| October | 58° | 37° | 62° | 1.9 | 0.6 | 10:51 | 30,000 | Busy | Mild, wet |
| November | 45° | 29° | 45° | 1.9 | 5.0 | 9:24 | 24,000 | Busy | Cool |
| December | 37° | 24° | 36° | 1.8 | 9.6 | 8:41 | 21,000 | Moderate | Cold |
| Year | 58° | 37° | 63° | 23.5 | 38.7 | 355,000 | |||
Year: average high and low, total precipitation and snowfall, total visitors. T = trace (under 0.05 in). – = not measured at this station. Updated .
- Hottest August, average high 83°F
- Coldest nights December, average low 24°F
- Source NOAA National Centers for Environmental Information; National Park Service
- Visitors a year about 355,000 (2023–2025 average)
- State Idaho
Elevation matters here: the record's second station, Kamiah, ID, sits at 1,210 ft, against 3,300 ft for Grangeville, ID. Expect conditions between the two depending on where you go.
Closures, reservations and alerts: Nez Perce National Historical Park on nps.gov
Nearby
- Whitman Mission National Historic SiteBest: Jun and Oct · Washington
- Lake Roosevelt National Recreation AreaBest: Apr, Jun and Sep · Washington
- John Day Fossil Beds National MonumentBest: Mar and Oct · Oregon
- Craters of the Moon National MonumentBest: Aug and Sep · Idaho