Juneau (AK)
September
Weather in Juneau, Alaska for September 2027
Your guide to Juneau weather in September - trends and predictions
In general, the average temperature in Juneau at the beginning of September is 12.2 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 7 °C by the end of September.
Juneau in September brings notable rainfall, with an average of 20 rainy days and a total precipitation of 391.9 mm.
Is September a good time to visit Juneau? check out the best time to travel to Juneau page.
✨ Is September a good time to visit Juneau? – Ask the AI Weatherman
Temperatures
Rain 🌧️
More
10
Dry days
20
Rainy days
0
Snow days
10°/5°
Temperatures
9 km/h
Avg max wind
89 %
Avg humidity
Juneau Weather September
Move between months or click on a day
Temperatures trend during September in Juneau
See the weather trend as well as the moving average line
September weather in Juneau day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Light rain | 13° /6° | 8.2 mm | 3 | |
| Sept. 2 | Light rain | 13° /6° | 2.9 mm | 3 | |
| Sept. 3 |  Light rain shower | 13° /7° | 2.4 mm | 3 | |
| Sept. 4 | Light rain | 12° /7° | 7.1 mm | 3 | |
| Sept. 5 | Light rain | 13° /7° | 6 mm | 3 | |
| Sept. 6 | Light rain | 10° /7° | 6.5 mm | 2 | |
| Sept. 7 |  Moderate rain | 12° /7° | 11.1 mm | 2 | |
| Sept. 8 | Moderate rain | 10° /5° | 18.8 mm | 2 | |
| Sept. 9 | Light rain | 11° /6° | 6.8 mm | 2 | |
| Sept. 10 | Light rain | 13° /7° | 8.8 mm | 3 | |
| Sept. 11 | Light rain | 11° /6° | 9.6 mm | 3 | |
| Sept. 12 | Moderate rain | 11° /6° | 11.3 mm | 2 | |
| Sept. 13 | Moderate rain | 11° /6° | 10.4 mm | 2 | |
| Sept. 14 | Moderate rain | 11° /5° | 21.8 mm | 2 | |
| Sept. 15 | Moderate rain | 8° /5° | 15.2 mm | 2 | |
| Sept. 16 | Moderate rain | 9° /6° | 16.9 mm | 2 | |
| Sept. 17 | Moderate rain | 9° /5° | 15.3 mm | 2 | |
| Sept. 18 | Moderate rain | 8° /5° | 18 mm | 2 | |
| Sept. 19 |  Heavy rain | 9° /6° | 29.6 mm | 2 | |
| Sept. 20 | Heavy rain | 8° /5° | 26.6 mm | 2 | |
| Sept. 21 | Heavy rain | 8° /5° | 26.8 mm | 2 | |
| Sept. 22 | Moderate rain | 8° /5° | 23.8 mm | 2 | |
| Sept. 23 | Moderate rain | 7° /4° | 19.6 mm | 2 | |
| Sept. 24 | Light rain | 8° /4° | 9.8 mm | 2 | |
| Sept. 25 | Light rain | 8° /4° | 7.4 mm | 2 | |
| Sept. 26 | Moderate rain | 7° /3° | 13.2 mm | 2 | |
| Sept. 27 | Moderate rain | 7° /3° | 21.6 mm | 2 | |
| Sept. 28 | Light rain | 6° /3° | 6 mm | 1 | |
| Sept. 29 | Light rain | 7° /3° | 4.3 mm | 2 | |
| Sept. 30 | Light rain | 8° /2° | 6.4 mm | 2 | |
| Next | |||||
Important Notice
Our weather forecast for Juneau in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Juneau forecast closer to your planned date for the most up-to-date weather information.
Change Month
Juneau in September - FAQ
What are the expected maximum and minimum temperatures in Juneau during September?
During September, expect a variety of temperatures with highs around 10° and lows near 5°, suitable for diverse activities and preferences.
How much rainfall should be expected in Juneau during September?
Significant rainfall exceeding 391.9 mm is expected in Juneau during September, occurring over more than 20 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Juneau during September?
The average wind speed in Juneau during September is 9 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Juneau
Explore the daily rainfall trends and prepare for Juneaus September weather 💧
Typically, Juneau has 20 rainy days in September with a total of 391.9 mm of rainfall.
Quick links
More Juneau weather pages
You are here
Where is Juneau?Get accurate weather forecasts for Juneau, located at latitude 58.302 and longitude -134.42. Stay updated with localized weather information tailored for Juneau.
Related locations
Select a location for accurate weather forecast
More Locations Found a mistake?
We appreciate your attention to details. Tell us here.