Is this weather normal in Petersburg Borough?

Alaska · county records since 1925, through September 2026.

Weather › Alaska › Petersburg Borough

Petersburg Borough has warmed about 0.4° per decade since 1970. September 2026 averaged 45.8° there, right at the usual for September (24th warmest of 102).

This week

Usual for Oct 28 to Nov 3: highs near 37°, lows near 28°

That is the 1991 to 2020 average for these dates in Petersburg Borough. The Weather Service forecast fills in below.

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usual high for the datewarmercooler

The last 12 months

Oct: +0.7°OctNov: +1.8°NovDec: -9.1°DecJan 2026: +1.9°JanFeb: +0.8°FebMar: -4.8°MarApr: -1.6°AprMay: -1.8°MayJun: +0.4°JunJul: -1.5°JulAug: +1.1°AugSep: +0.5°Sepwarmercooler

Each bar is a month's average temperature against the usual for that month (1991 to 2020). Ranks compare the same month in every year since 1925.

Every year since 1925

19252025

Rain and drought

Oct: -2.0 inOctNov: -1.2 inNovDec: -0.7 inDecJan 2026: +4.3 inJanFeb: +2.1 inFebMar: -0.8 inMarApr: -2.8 inAprMay: +1.2 inMayJun: -2.0 inJunJul: -2.5 inJulAug: -6.7 inAugSep: -3.5 inSepwetterdrier

Rain and melted snow against the usual for each month. The drought reading is NOAA's Palmer index for the county.

Month by month in Petersburg Borough

MonthUsual high / lowUsual rainWarmestColdest
January29° / 20°18.9 in33.5° 19816.9° 1969
February31° / 20°12.9 in33.1° 19777.3° 1936
March34° / 22°13.0 in34.5° 201622.2° 1951
April41° / 29°11.1 in38.7° 201628.6° 1972
May49° / 36°9.8 in46.9° 201537.1° 1955
June54° / 43°6.9 in52.2° 193643.5° 1949
July56° / 44°10.8 in52.6° 200946.3° 1932
August56° / 45°15.5 in53.9° 200446.4° 1969
September50° / 40°23.6 in49.0° 199539.8° 1992
October42° / 33°25.1 in41.0° 193632.7° 1956
November32° / 25°21.2 in34.0° 193615.9° 1985
December30° / 21°21.2 in32.1° 19307.6° 1933

Warmest and coldest are the month's whole-month average temperature, with the year it happened.

Towns in Petersburg Borough

Crime Radar: Petersburg

Nearby counties