Alaska, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
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: 4.4"

The wettest month (with the highest rainfall) is August (4.6").
Driest months (with the lowest rainfall) are February, March and April (1.1").

  • Average rainfall days in September: 16 days

Months with the highest number of rainy days are August and September (16 days).
Months with the lowest number of rainy days are March and April (8 days).

  • Average snowfall in September: 0"

The month with the highest snowfall is December (11.8").
Months with the lowest snowfall are June, July, August and September (0").

  • Average daylight in September: 12.8h

The month with the longest days is June (Average daylight: 18.6h).
The month with shortest days is December (Average daylight: 6.1h).