Southcentral Alaska

Alaska saw a sharp cooldown on Wednesday as the end of September brought the seasonal 'hammer down'. Temperatures stayed at or below freezing across the North Slope and northern Interior, while Southcentral turned much cooler. Southeast Alaska, by contrast, remained mild. Forecasters note the pattern is typical for this time of year, when colder air settles in across the state.

September precipitation across Alaska split sharply between north and south. Totals along roughly 65°N from west to east were at or near record highs for the month, while Southwest, Southcentral, and Southeast Alaska and the upper Tanana Valley remained unusually dry. Alaska climate observers flagged the stark divide as notable for a single month.

Tuesday's high temperatures across Alaska show a sharp seasonal shift, with Southcentral and Kodiak Island staying mild while areas north of the Alaska Range turned noticeably more autumn-like than just days earlier. Weather watchers are tracking the rapid cooling pattern heading into fall.

Alaska weather watchers reported Monday's high temperatures across the state, noting conditions remained mild for the season in Southcentral and around upper Bristol Bay. North of the Alaska Range, temperatures were generally cooler than in recent days. The update gave residents a statewide snapshot of a warm spell concentrated in the southern parts of Alaska.

High temperatures across Alaska on Tuesday remained mild in Southcentral and around Kodiak Island, but conditions north of the Alaska Range have turned noticeably more autumn-like compared with just a few days earlier, according to state weather watchers. The shift marks a quick seasonal cooldown for interior parts of the state.