Glacier Bay National Park and Preserve (AK)
September
Weather in Glacier Bay National Park and Preserve, Alaska for September 2025
Your guide to Glacier Bay National Park and Preserve weather in September - trends and predictions
The forecast for the first days of September 2025 in Glacier Bay National Park and Preserve predicts a temperature of 17.4 °F, which is slightly above the historical average.
In general, the average temperature in Glacier Bay National Park and Preserve at the beginning of September is 13.7 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 9.7 °F by the end of September.
Glacier Bay National Park and Preserve experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 310.7 mm.
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Temperatures
Rain 🌧️
More
8
Dry days
22
Rainy days
0
Snow days
11°/8°
Temperatures
13 km/h
Avg max wind
86 %
Avg humidity
Glacier Bay National Park and Preserve Weather September
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Temperatures trend during September in Glacier Bay National Park and Preserve
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September weather in Glacier Bay National Park and Preserve day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Patchy rain possible | 17° /14° | 0.3 mm | 4 | |
| Sept. 2 | Patchy rain possible | 16° /14° | 0.3 mm | 3 | |
| Sept. 3 | Patchy rain possible | 12° /10° | 3.4 mm | 3 | |
| Sept. 4 |  Moderate or heavy rain shower | 12° /9° | 31.9 mm | 3 | |
| Sept. 5 | Patchy rain possible | 13° /11° | 17.1 mm | 3 | |
| Sept. 6 | Moderate or heavy rain shower | 13° /10° | 18 mm | 3 | |
| Sept. 7 | Moderate rain at times | 13° /8° | 2.4 mm | 3 | |
| Sept. 8 |  Overcast | 13° /8° | 0 mm | 3 | |
| Sept. 9 | Patchy rain possible | 11° /8° | 2.5 mm | 3 | |
| Sept. 10 | Overcast | 13° /8° | 0 mm | 3 | |
| Sept. 11 | Patchy rain possible | 11° /8° | 0.7 mm | 3 | |
| Sept. 12 | Moderate or heavy rain shower | 11° /9° | 27.9 mm | 3 | |
| Sept. 13 |  Heavy rain at times | 12° /9° | 16.5 mm | 3 | |
| Sept. 14 | Overcast | 13° /7° | 0 mm | 3 | |
| Sept. 15 | Moderate or heavy rain shower | 11° /9° | 30.9 mm | 3 | |
| Sept. 16 | Patchy rain possible | 12° /8° | 4 mm | 3 | |
| Sept. 17 | Overcast | 11° /5° | 0.9 mm | 3 | |
| Sept. 18 | Moderate or heavy rain shower | 11° /9° | 20.7 mm | 3 | |
| Sept. 19 | Moderate rain at times | 11° /8° | 5.3 mm | 3 | |
| Sept. 20 | Heavy rain at times | 11° /6° | 18.7 mm | 3 | |
| Sept. 21 | Moderate or heavy rain shower | 9° /6° | 27.5 mm | 2 | |
| Sept. 22 | Patchy rain possible | 11° /7° | 4.4 mm | 3 | |
| Sept. 23 | Moderate or heavy rain shower | 11° /9° | 47.2 mm | 3 | |
| Sept. 24 | Heavy rain at times | 11° /9° | 7.3 mm | 3 | |
| Sept. 25 | Patchy rain possible | 9° /7° | 2.8 mm | 2 | |
| Sept. 26 | Patchy rain possible | 10° /5° | 0.5 mm | 3 | |
| Sept. 27 | Moderate rain at times | 10° /5° | 2.3 mm | 3 | |
| Sept. 28 | Overcast | 9° /6° | 0.2 mm | 2 | |
| Sept. 29 | Patchy rain possible | 9° /4° | 0.1 mm | 2 | |
| Sept. 30 | Patchy rain possible | 10° /4° | 3.2 mm | 3 | |
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Important Notice
Our weather forecast for Glacier Bay National Park and Preserve 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 Glacier Bay National Park and Preserve forecast closer to your planned date for the most up-to-date weather information.
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Glacier Bay National Park and Preserve in September - FAQ
What are the expected maximum and minimum temperatures in Glacier Bay National Park and Preserve during September?
During September, expect a variety of temperatures with highs around 11° and lows near 8°, suitable for diverse activities and preferences.
How much rainfall should be expected in Glacier Bay National Park and Preserve during September?
Significant rainfall exceeding 310.7 mm is expected in Glacier Bay National Park and Preserve during September, occurring over more than 22 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Glacier Bay National Park and Preserve during September?
The average wind speed in Glacier Bay National Park and Preserve during September is 13 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Glacier Bay National Park and Preserve
Explore the daily rainfall trends and prepare for Glacier Bay National Park and Preserves September weather 💧
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