Typical Weather in Juneau, AK in September
56° F Avg High
46° F Avg Low
18 Rainy Days
☀️ Temperature Summary
Highs in September are typically around 56°F, which is warmer than usual in Juneau. You can expect overnight lows near 46°F most days. Daily high temperatures can range between 59°F and 52°F for the month of September.
High Temps Throughout the Year
🎒 What to Pack
Pick up a few of these items to keep your trip fun and comfortable.
☔ Rain Summary
Don't forget to pack an umbrella! You can expect about a 59% chance of rain for any given day in September. It's one of the rainier months of the year for Juneau, with total rainfall for the month around 12 inches. If you're looking to travel when it's drier, you might consider visiting in August instead, when typical rainfall chances are closer to 48%.
Rainfall Throughout the Year
Planning a trip to Juneau? Try our free trip weather planner