Ketchikan (AK)
September
Weather in Ketchikan, Alaska for September 2027
Your guide to Ketchikan weather in September - trends and predictions
In general, the average temperature in Ketchikan at the beginning of September is 15.7 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 10.6 °C by the end of September.
Ketchikan in September brings notable rainfall, with an average of 18 rainy days and a total precipitation of 544.8 mm.
Is September a good time to visit Ketchikan? check out the best time to travel to Ketchikan page.
✨ Is September a good time to visit Ketchikan? – Ask the AI Weatherman
Temperatures
Rain 🌧️
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12
Dry days
18
Rainy days
0
Snow days
13°/9°
Temperatures
16 km/h
Avg max wind
86 %
Avg humidity
Ketchikan Weather September
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Temperatures trend during September in Ketchikan
See the weather trend as well as the moving average line
September weather in Ketchikan day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Light rain | 16° /11° | 7.7 mm | 4 | |
| Sept. 2 |  Overcast | 18° /11° | 0 mm | 4 | |
| Sept. 3 |  Cloudy | 16° /10° | 0 mm | 4 | |
| Sept. 4 | Light rain | 16° /11° | 2.5 mm | 4 | |
| Sept. 5 | Light rain | 15° /11° | 7.2 mm | 3 | |
| Sept. 6 | Cloudy | 15° /11° | 0.2 mm | 4 | |
| Sept. 7 |  Patchy rain possible | 15° /11° | 0.2 mm | 3 | |
| Sept. 8 | Light rain | 15° /11° | 3.7 mm | 3 | |
| Sept. 9 | Light rain | 15° /10° | 7.6 mm | 3 | |
| Sept. 10 | Patchy light drizzle | 15° /10° | 1.8 mm | 3 | |
| Sept. 11 |  Moderate rain | 15° /10° | 22.6 mm | 4 | |
| Sept. 12 | Moderate rain | 14° /10° | 6.7 mm | 3 | |
| Sept. 13 | Moderate rain | 14° /9° | 17.5 mm | 3 | |
| Sept. 14 | Moderate rain | 13° /10° | 11.8 mm | 3 | |
| Sept. 15 |  Heavy rain | 14° /9° | 49.9 mm | 3 | |
| Sept. 16 | Moderate rain | 15° /10° | 23.6 mm | 3 | |
| Sept. 17 | Moderate rain | 14° /11° | 22.2 mm | 3 | |
| Sept. 18 | Moderate rain | 12° /9° | 12 mm | 2 | |
| Sept. 19 | Heavy rain | 12° /10° | 37.6 mm | 2 | |
| Sept. 20 | Heavy rain | 12° /9° | 39.8 mm | 2 | |
| Sept. 21 | Heavy rain | 12° /10° | 29 mm | 2 | |
| Sept. 22 | Heavy rain | 11° /9° | 47.8 mm | 2 | |
| Sept. 23 | Heavy rain | 10° /9° | 35.2 mm | 2 | |
| Sept. 24 | Moderate rain | 11° /8° | 20.4 mm | 2.9 | |
| Sept. 25 | Heavy rain | 11° /8° | 26.7 mm | 2.8 | |
| Sept. 26 | Heavy rain | 11° /8° | 35.1 mm | 2 | |
| Sept. 27 | Heavy rain | 11° /8° | 32.7 mm | 2 | |
| Sept. 28 | Light rain | 10° /8° | 3 mm | 2 | |
| Sept. 29 | Moderate rain | 10° /7° | 21.7 mm | 2 | |
| Sept. 30 | Moderate rain | 10° /7° | 18.7 mm | 2 | |
| Next | |||||
Important Notice
Our weather forecast for Ketchikan 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 Ketchikan forecast closer to your planned date for the most up-to-date weather information.
Change Month
Ketchikan in September - FAQ
What are the expected maximum and minimum temperatures in Ketchikan during September?
During September, expect a variety of temperatures with highs around 13° and lows near 9°, suitable for diverse activities and preferences.
How much rainfall should be expected in Ketchikan during September?
Significant rainfall exceeding 544.8 mm is expected in Ketchikan during September, occurring over more than 18 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Ketchikan during September?
The average wind speed in Ketchikan during September is 16 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Ketchikan
Explore the daily rainfall trends and prepare for Ketchikans September weather 💧
Typically, Ketchikan has 18 rainy days in September with a total of 544.8 mm of rainfall.
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