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Weather in Sitka for September 2025

Your guide to Sitka weather in September - trends and predictions

    Temperatures

  • In general, the average temperature in Sitka at the beginning of September is 12.6 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 8.1 °F by the end of September.

  • Rain 🌧️

  • Sitka experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 403.4 mm.

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Average dry days
6
Dry days
Average rainy days
24
Rainy days
Average snowy days
0
Snow days
Average temperatures
11°/8°
Temperatures
Average wind speed
11 km/h
Avg max wind
Average humidity
89 %
Avg humidity

Sitka Weather September

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Temperatures trend during September in Sitka

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 Patchy rain possible
Patchy rain possible
13° /10° 1.6 mm 3
Sept. 2 Patchy rain possible
Patchy rain possible
14° /8° 0.6 mm 3
Sept. 3 Light drizzle
Light drizzle
12° /8° 1.7 mm 3
Sept. 4 Light drizzle
Light drizzle
12° /8° 13.6 mm 3
Sept. 5 Light drizzle
Light drizzle
12° /8° 20.5 mm 3
Sept. 6 Light rain
Light rain
12° /8° 12.1 mm 3
Sept. 7 Patchy rain possible
Patchy rain possible
13° /10° 1.7 mm 3
Sept. 8 Patchy rain possible
Patchy rain possible
14° /6° 0.4 mm 3
Sept. 9 Patchy rain possible
Patchy rain possible
13° /5° 0.2 mm 3
Sept. 10 Light rain shower
Light rain shower
14° /7° 1.9 mm 3
Sept. 11 Patchy rain possible
Patchy rain possible
14° /6° 0.2 mm 3
Sept. 12 Moderate or heavy rain with thunder
Moderate or heavy rain with thunder
11° /10° 20.8 mm 3
Sept. 13 Light rain shower
Light rain shower
13° /10° 10.9 mm 3
Sept. 14 Patchy rain possible
Patchy rain possible
13° /7° 1.7 mm 3
Sept. 15 Light rain shower
Light rain shower
10° /9° 18.4 mm 3
Sept. 16 Light rain shower
Light rain shower
12° /9° 3.1 mm 3
Sept. 17 Fog
Fog
9° /8° 0 mm 2
Sept. 18 Moderate rain
Moderate rain
11° /9° 66.2 mm 3
Sept. 19 Light rain shower
Light rain shower
10° /9° 31.8 mm 2
Sept. 20 Moderate or heavy rain shower
Moderate or heavy rain shower
10° /9° 15.1 mm 3
Sept. 21 Moderate or heavy rain shower
Moderate or heavy rain shower
11° /8° 36.2 mm 3
Sept. 22 Fog
Fog
10° /8° 7.3 mm 3
Sept. 23 Light rain shower
Light rain shower
11° /10° 76.7 mm 3
Sept. 24 Overcast
Overcast
10° /9° 4.6 mm 3
Sept. 25 Fog
Fog
9° /7° 0 mm 2
Sept. 26 Cloudy
Cloudy
8° /6° 0 mm 2
Sept. 27 Mist
Mist
8° /7° 7.5 mm 2
Sept. 28 Fog
Fog
7° /6° 1 mm 2
Sept. 29 Fog
Fog
7° /6° 0 mm 2
Sept. 30 Moderate or heavy rain shower
Moderate or heavy rain shower
8° /7° 47.6 mm 2
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Important Notice
Our weather forecast for Sitka 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 Sitka forecast closer to your planned date for the most up-to-date weather information.

Sitka in September - FAQ

What are the expected maximum and minimum temperatures in Sitka 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 Sitka during September?
Significant rainfall exceeding 403.4 mm is expected in Sitka during September, occurring over more than 24 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Sitka during September?
The average wind speed in Sitka during September is 11 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Sitka

Explore the daily rainfall trends and prepare for Sitkas September weather 💧

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Location coordinates Where is Sitka?

Get accurate weather forecasts for Sitka, located at latitude 57.053 and longitude -135.331. Stay updated with localized weather information tailored for Sitka.

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