Saturday, July 10, 2021

July Frost

Courtesy of Rick Thoman:

The 29°F at the Salcha RAWS is slightly impressive for the time of year: this has only happened twice in July in the past 15 years (27°F in 2012 and 29°F in 2018) - although last July had 30°F on 3 nights.

The chart below shows the hourly temperature trace, with the minimum occurring at 3am this morning and 1am yesterday (AKST).

Chicken also saw a freeze this morning: 31°F.  Early last summer I commented that Chicken hadn't seen a hard freeze (28°F or lower) in the height of summer for several years, but then it happened less than a month after my post last year: 27°F on July 3, 2020.

The Chalkyitsik RAWS (31°F yesterday and today) was also colder last July: 28°F on July 23.  None of these cold spots are reliably frost-free at any time of the year.

[Update July 11: 27°F this morning at the Salcha RAWS site.  To find colder than this in July, we have to go back to 2005, when 24°F occurred on July 21.  Also, Chicken saw 28°F this morning.]

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