The Glennallen plate. Relief from Copernicus GLO-30; rivers and lakes from USGS NHD; watersheds from the USGS Watershed Boundary Dataset; roads and city limits from Census TIGER 2024.
−44° on Nov. 12, 1989, the coldest reading for this week of the year since 1909. Next is −42° in 1969.
Glennallen’s center stands about 2,040 ft above sea level. Within three miles the land runs from 1,800 ft to 2,160 ft, a difference of 360 ft: rolling country.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 17×.
Heights from Copernicus GLO-90 (a surface model: it includes buildings and tree canopy); summits from USGS GNIS; rivers from USGS NHDPlus HR.
Glennallen has a dry-summer subarctic climate. Summer afternoons average 69° in July; winter nights fall to about −12° in January. About 12 inches of rain fall in a normal year.
On November 14 Glennallen normally reaches 15° and falls to −2°. The record high is 41°, in 1964; the record low −37°, in 1918. The most rain on this date, 0.41 in, fell in 2009.
Normals 1991–2020 and records since 1909 from the Gulkana Area threaded record (Gulkana Airport, 12 miles east, 460 ft lower). NOAA, through RCC-ACIS.