Weather in September
Temperature
Iliamna in September undergoes a slight reduction in the average high-temperature, shifting from August's enjoyable 61°F (16.1°C) to a cool 54.1°F (12.3°C). Iliamna's temperature lowers to a mean of 41.7°F (5.4°C) during the nights in September.Rainfall
In Iliamna, in September, during 16 rainfall days, 4.41" (112mm) of precipitation is typically accumulated. Throughout the year, there are 133 rainfall days, and 25.55" (649mm) of precipitation is accumulated.Snowfall
In Iliamna, snow does not fall in June through September.Daylight
In Iliamna, the average length of the day in September is 12h and 49min.On the first day of the month, sunrise is at 7:17 am and sunset at 9:20 pm. On the last day of September, in Iliamna, Alaska, sunrise is at 8:25 am and sunset at 7:53 pm AKDT.
Frequently asked questions
What is the usual temperature for Iliamna in September?
How much does it rain in Iliamna in September?
When it does not snow in Iliamna?
Does it snow in Iliamna in September?
How many hours of daylight does Iliamna have in September?
What time are sunrise and sunset in September in Iliamna?
Average temperature in September
Iliamna, AK
- Average high temperature in September: 54.1°F
The warmest month (with the highest average high temperature) is July (62.5°F).
The month with the lowest average high temperature is January (22.6°F).
- Average low temperature in September: 41.7°F
The month with the highest average low temperature is July (48.3°F).
The coldest month (with the lowest average low temperature) is January (9.9°F).
Average rainfall in September
Iliamna, AK
- Average rainfall in September: 4.4"
The wettest month (with the highest rainfall) is August (4.6").
The driest months (with the least rainfall) are February, March and April (1.1").
Average rainfall days in September
Iliamna, AK
- Average rainfall days in September: 16 days
The months with the highest number of rainy days are August and September (16 days).
The months with the least rainy days are March and April (8 days).
Average snowfall in September
Iliamna, AK
- Average snowfall in September: 0"
The month with the highest snowfall is December (11.8").
The months with the least snowfall are June, July, August and September (0").
Average daylight in September
Iliamna, AK
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 18h and 36min).
The month with the shortest days is December (Average daylight: 6h and 6min).
Iliamna, Alaska, USA
Weather forecast for your location
2. Allow the app to use your location
