Kobuk Valley National Park weather in September
September in Kobuk Valley National Park: cold, rainy, with clean air — a great time to visit.
#5 of 12 months in Kobuk Valley National Park · #377 of 604 destinations to visit in September · comfort 75/100 (tier B)
Updated June 2026 · climate normals from ERA5 reanalysis
Kobuk Valley National Park climate normals — September
| Daytime high | 8°C / 46°F | 🧥 cold |
|---|---|---|
| Nighttime low | 2°C / 36°F | |
| Feels like (high) | 5°C / 41°F | |
| Rainfall | 100 mm / 3.9 in | 🌧 rainy |
| Rainy days | 16 days | |
| Humidity | 88% | 💦 very humid |
| Dew point | 3°C / 37°F | |
| Sunshine | 6 h/day | |
| Daylight | 13.2 h | |
| Wind | 13 km/h / 8 mph | |
| Snowfall | 4.5 cm / 1.8 in | |
| Air quality (US AQI) | 20 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Kobuk Valley National Park?
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Kobuk Valley National Park in September — FAQ
- Is September a good time to visit Kobuk Valley National Park?
- September in Kobuk Valley National Park: cold, rainy, with clean air — a great time to visit. It ranks #5 of 12 months for Kobuk Valley National Park on SeasonMap's comfort score (75/100).
- What is the weather like in Kobuk Valley National Park in September?
- In September, Kobuk Valley National Park averages a daily high of 7.5°C and a low of 2.2°C, with about 99.8 mm of rain over roughly 15.6 rainy days.
- What is the air quality in Kobuk Valley National Park in September?
- Kobuk Valley National Park has a mean US Air Quality Index of about 20 in September.
- Does it snow in Kobuk Valley National Park in September?
- Kobuk Valley National Park sees roughly 4.5 cm of snowfall in September.