Home

Iliamna, AK Weather


Iliamna, AK climate is cool during summer when temperatures tend to be in the 50's and extremely cold during winter when temperatures tend to be in the 10's.

The warmest month of the year is July with an average maximum temperature of 9.99 degrees Fahrenheit, while the coldest month of the year is February with an average minimum temperature of 9.50 degrees Fahrenheit.

Temperature variations between night and day tend to be fairly limited during summer with a difference that can reach 13 degrees Fahrenheit, and fairly limited during winter with an average difference of 13 degrees Fahrenheit.

The annual average precipitation at Iliamna is 9.99 Inches. Rainfall in is fairly evenly distributed throughout the year. The wettest month of the year is September with an average rainfall of 4.32 Inches.

Weather Data

Normal Climate

Normal Temperatures

(ILIAMNA AP Weather station, 1.74 miles from Iliamna)
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Max °F 22.4 23.2 30.0 38.9 49.9 58.0 62.4 60.6 53.2 40.0 30.4 25.0 41.2
Mean °F 16.4 16.4 22.8 32.3 43.1 50.9 55.8 54.5 47.6 34.6 24.9 19.1 34.9
Min °F 10.3 9.5 15.5 25.7 36.2 43.7 49.1 48.4 42.0 29.2 19.4 13.1 28.5

Normal Precipitation

(ILIAMNA AP Weather station, 1.74 miles from Iliamna)
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Inch 1.33 0.98 1.03 0.97 1.27 1.54 2.38 4.26 4.32 3.10 2.25 1.66 9.99