Glennallen (AK) Weather & Climate: Best Time to Visit

In Glennallen, temperatures differ significantly between summer and winter months. On average, daytime temperatures range from a pleasant 20°C (68°F) in July to a very cold -14°C (7°F) in January.

Nighttime temperatures range from 10°C (50°F) in July to -21°C (-6°F) in January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Glennallen typically sees modest rain/snowfall throughout the year, with an average annual precipitation of 495 mm (19 in). The seasons in Glennallen bring significant changes in precipitation. The wettest month, September, receives moderate rainfall, with an average of 69 mm (2.7 in) of precipitation. This rainfall is distributed across 11 rainy days.

In contrast, the driest month, April, experiences much less snow/rainfall, totaling 15 mm (0.6 in) over 4 snowy/rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Glennallen Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

The relative humidity is high throughout the year in Glennallen.

The city experiences its highest humidity in November, reaching 80%. In May, the humidity drops to its lowest level at 58%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year

The average wind speed over the year ranges from 1 m/s (2 knots) to 3 m/s (6 knots). It is lower in January and December and higher in March, April, May, June, July, August and September. What does this mean?

The mean monthly wind speed over the year (meters per second)