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Weather in Juneau City and Borough for September 2025

Your guide to Juneau City and Borough weather in September - trends and predictions
  • In general, the average temperature in Juneau City and Borough at the beginning of September is 9.9 °F. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 7.3 °F by the end of September.

  • Juneau City and Borough experiences an exceptionally high level of rainfall in September, with more than 24 rainy days on average.

  • New! Chat with our AI weatherman - it’s amazing and free.
Average dry days
3
Dry days
Average rainy days
27
Rainy days
Average snowy days
0
Snow days
Average temperatures
9°/4°
Temperatures
Average wind speed
9 km/h
Avg max wind
Average humidity
91 %
Avg humidity

Juneau City and Borough in September average weather

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Temperatures trend during September in Juneau City and Borough

See the weather trend as well as the moving average line

September weather day by day

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Date Weather Temperatures Rain UV More
Sept. 1 Light rain shower
Light rain shower
12° /7° 9.9 mm 3
Sept. 2 Light rain shower
Light rain shower
10° /5° 5.8 mm 3
Sept. 3 Light rain shower
Light rain shower
10° /5° 4.8 mm 3
Sept. 4 Light rain shower
Light rain shower
8° /5° 14.2 mm 2
Sept. 5 Light rain shower
Light rain shower
11° /5° 11.9 mm 3
Sept. 6 Light rain
Light rain
8° /5° 12.8 mm 2
Sept. 7 Light rain shower
Light rain shower
10° /5° 22.1 mm 3
Sept. 8 Heavy rain
Heavy rain
10° /4° 19.5 mm 3
Sept. 9 Light drizzle
Light drizzle
11° /5° 0.8 mm 3
Sept. 10 Sunny
Sunny
14° /5° 0.1 mm 4
Sept. 11 Light drizzle
Light drizzle
10° /4° 2.8 mm 3
Sept. 12 Fog
Fog
8° /5° 20.6 mm 2
Sept. 13 Moderate rain
Moderate rain
8° /5° 20.9 mm 2
Sept. 14 Moderate rain
Moderate rain
9° /4° 43.6 mm 3
Sept. 15 Moderate rain
Moderate rain
7° /3° 21.7 mm 2
Sept. 16 Light rain
Light rain
8° /4° 14.8 mm 3
Sept. 17 Light rain
Light rain
8° /3° 15.1 mm 2
Sept. 18 Light rain
Light rain
7° /4° 15.5 mm 2
Sept. 19 Mist
Mist
9° /4° 10.7 mm 2
Sept. 20 Light drizzle
Light drizzle
8° /3° 5.2 mm 2
Sept. 21 Moderate rain
Moderate rain
8° /4° 36 mm 3
Sept. 22 Light rain shower
Light rain shower
8° /4° 27.4 mm 2
Sept. 23 Light rain shower
Light rain shower
7° /3° 29.3 mm 2
Sept. 24 Overcast
Overcast
8° /2° 11.5 mm 2
Sept. 25 Overcast
Overcast
7° /3° 5.3 mm 2
Sept. 26 Light rain
Light rain
8° /3° 5.2 mm 2
Sept. 27 Light drizzle
Light drizzle
8° /3° 1.7 mm 2
Sept. 28 Patchy rain possible
Patchy rain possible
6° /2° 5.2 mm 2
Sept. 29 Patchy rain possible
Patchy rain possible
7° /3° 1.2 mm 2
Sept. 30 Patchy light drizzle
Patchy light drizzle
7° /1° 4.2 mm 2
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Important Notice
Our weather forecast for Juneau City and Borough 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 City and Borough forecast closer to your planned date for the most up-to-date weather information.

Juneau City and Borough in September - FAQ

What are the expected maximum and minimum temperatures in Juneau City and Borough during September?
Prepare for cooler days with highs just around 9° and colder nights, dipping below 4°.
How much rainfall should be expected in Juneau City and Borough during September?
Significant rainfall exceeding 477.9 mm is expected in Juneau City and Borough during September, occurring over more than 27 days. Preparing for wet conditions is recommended in your planning.
Is snowfall common in Juneau City and Borough during September?
Juneau City and Borough experiences an average snowfall of 0 cm during September, occurring over 0 days, which may interest winter sports enthusiasts.
What are the typical wind conditions in Juneau City and Borough during September?
The average wind speed in Juneau City and Borough during September is 9 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Juneau City and Borough

Explore the daily rainfall trends and prepare for Juneau City and Boroughs September weather 💧
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Location coordinates Where is Juneau City and Borough?

Get accurate weather forecasts for Juneau City and Borough, located at latitude 58.302 and longitude -134.42. Stay updated with localized weather information tailored for Juneau City and Borough.

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