Best time to visit Kobuk Valley National Park
The short answer
Best months to visit Kobuk Valley National Park: June–July. Daily highs run about 60–65°F, with about 75% of October's visitors.
Hardest months: January–April, mostly because of cold weather.
How we picked these months: each month is scored on daily highs (65–82°F is ideal), rain, snow and seasonal closures, then reduced by up to 30% for crowds, measured against the park's busiest month. We list the months within 15% of the top score (at most 5).
Weather and crowds by month
Kobuk Valley National Park month by month
Park-wide averages across 4 locations. Crowds compare each month with the park's busiest month: Quiet is under 35% of it, Moderate under 60%, Busy under 85%, Peak above that.
| Month | Rating | High / low | Rain | Snow | Crowds | Closures |
|---|---|---|---|---|---|---|
| January | Poor | 1° / -8°F | 0 in | 8.7 in | Moderate | – |
| February | Poor | 3° / -8°F | 0 in | 11.4 in | Moderate | – |
| March | Poor | 12° / -1°F | 0 in | 11.5 in | Moderate | – |
| April | Poor | 28° / 14°F | 0.2 in | 5.3 in | Moderate | – |
| May | Poor | 48° / 32°F | 1.1 in | 2.1 in | Moderate | – |
| June | Best | 61° / 46°F | 2.3 in | – | Busy | – |
| July | Best | 65° / 52°F | 3.5 in | – | Busy | – |
| August | Fair | 57° / 46°F | 3.9 in | – | Peak | – |
| September | Poor | 46° / 36°F | 2.9 in | 2.5 in | Busy | – |
| October | Poor | 30° / 22°F | 0.6 in | 9.8 in | Peak | – |
| November | Poor | 11° / 2°F | 0 in | 12.8 in | Busy | – |
| December | Poor | 4° / -7°F | 0 in | 13.1 in | Busy | – |
Weather by location
Parks with a big range of elevation can differ a lot from one area to another. Open a location to see its own numbers.
Park-wide (center of the park)
| Month | High | Low | Rain | Snow |
|---|---|---|---|---|
| January | 3°F | -6°F | 0 in | 11.5 in |
| February | 4°F | -6°F | 0 in | 15.5 in |
| March | 12°F | 0°F | 0 in | 15.2 in |
| April | 27°F | 13°F | 0.1 in | 7.0 in |
| May | 45°F | 31°F | 1.2 in | 3.3 in |
| June | 59°F | 45°F | 2.5 in | – |
| July | 63°F | 50°F | 4.4 in | – |
| August | 56°F | 44°F | 4.1 in | – |
| September | 45°F | 34°F | 3.4 in | 4.1 in |
| October | 29°F | 20°F | 0.5 in | 13.8 in |
| November | 12°F | 3°F | 0 in | 15.7 in |
| December | 5°F | -5°F | 0 in | 16.1 in |
Great Kobuk Sand Dunes
| Month | High | Low | Rain | Snow |
|---|---|---|---|---|
| January | 1°F | -8°F | 0 in | 7.7 in |
| February | 3°F | -7°F | 0 in | 9.7 in |
| March | 12°F | 0°F | 0 in | 9.6 in |
| April | 28°F | 14°F | 0.2 in | 4.9 in |
| May | 48°F | 33°F | 1.1 in | 1.8 in |
| June | 61°F | 46°F | 2.0 in | – |
| July | 65°F | 52°F | 2.8 in | – |
| August | 58°F | 46°F | 3.3 in | – |
| September | 46°F | 36°F | 2.6 in | 1.9 in |
| October | 31°F | 23°F | 0.5 in | 8.5 in |
| November | 12°F | 3°F | 0 in | 11.8 in |
| December | 4°F | -6°F | 0 in | 11.7 in |
Hunt River
| Month | High | Low | Rain | Snow |
|---|---|---|---|---|
| January | 0°F | -10°F | 0 in | 7.9 in |
| February | 2°F | -9°F | 0 in | 10.5 in |
| March | 12°F | -2°F | 0 in | 10.6 in |
| April | 29°F | 13°F | 0.2 in | 4.5 in |
| May | 49°F | 32°F | 1.2 in | 1.6 in |
| June | 62°F | 47°F | 2.2 in | – |
| July | 66°F | 52°F | 3.5 in | – |
| August | 58°F | 46°F | 3.9 in | – |
| September | 47°F | 36°F | 2.8 in | 2.0 in |
| October | 31°F | 22°F | 0.7 in | 8.5 in |
| November | 11°F | 1°F | 0 in | 12.0 in |
| December | 4°F | -7°F | 0 in | 12.5 in |
Onion Portage Archeological District
| Month | High | Low | Rain | Snow |
|---|---|---|---|---|
| January | 0°F | -10°F | 0 in | 7.6 in |
| February | 2°F | -9°F | 0 in | 9.8 in |
| March | 12°F | -1°F | 0 in | 10.5 in |
| April | 29°F | 14°F | 0.2 in | 4.9 in |
| May | 49°F | 33°F | 1.1 in | 1.7 in |
| June | 62°F | 47°F | 2.3 in | – |
| July | 66°F | 53°F | 3.4 in | – |
| August | 58°F | 46°F | 4.1 in | – |
| September | 47°F | 36°F | 2.9 in | 2.0 in |
| October | 31°F | 23°F | 0.6 in | 8.4 in |
| November | 11°F | 1°F | 0 in | 11.5 in |
| December | 3°F | -8°F | 0 in | 12.3 in |
Kobuk Valley National Park by season
Spring (March–May)
Spring (March–May) is a difficult time to visit Kobuk Valley National Park. Daily highs average 12–48°F and lows -1–32°F. Expect about 0.5 in of rain a month and 6.3 in of snow, with up to 40 in on the ground. Visitor numbers run 40–41% of the busiest month, which is moderate by this park's standards.
Summer (June–August)
Summer (June–August) is a good time to visit Kobuk Valley National Park. Daily highs average 57–65°F and lows 46–52°F. Expect about 3.2 in of rain a month and little or no snow. Visitor numbers run 70–86% of the busiest month, which is busy by this park's standards.
Fall (September–November)
Fall (September–November) is a difficult time to visit Kobuk Valley National Park. Daily highs average 11–46°F and lows 2–36°F. Expect about 1.2 in of rain a month and 8.3 in of snow, with up to 15 in on the ground. Visitor numbers run 80–100% of the busiest month, which is peak by this park's standards.
Winter (December–February)
Winter (December–February) is a difficult time to visit Kobuk Valley National Park. Daily highs average 1–4°F and lows -8–-7°F. Expect about 0.0 in of rain a month and 11.1 in of snow, with up to 36 in on the ground. Visitor numbers run 36–84% of the busiest month, which is moderate by this park's standards.
For what to do in each season, see our guides to trip planning, fees and hours, trails and things to do, where the planning page also has our written advice on when to go. In-depth topic guides cover individual places and hikes.
What the National Park Service says about the weather
Snow, rain, and freezing temperatures can occur any time of the year. Always travel with good quality rain gear and warm layers. Be especially careful to stay dry. Hypothermia can set in on a windy, wet day, even when it doesn't feel that cold.
Weather: modeled monthly averages for 2014-2023 (Open-Meteo Archive API), averaged over 4 locations. Modeled grid cells can read cooler than weather stations in deep canyons and deserts, and warmer or colder at high elevation. Visits: monthly recreation visits for 2021-2024, National Park Service.
