Petersburg climate

Petersburg Weather in September

NOAA 1991-2020 normals for Petersburg 1, 1.4 km from Petersburg

Average highs run from 59°F on September 1 to 52°F on September 30, and lows from 48°F to 43°F. Normal precipitation for the month is 14.35 in over about 20 wet days.

September day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Petersburg, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
56°F
Average low
46°F
Precipitation
14.35 in
Record high
81°FSep 14, 1938
Record low
22°FSep 26, 1972
Chance of a freeze
10%
Daylight
13 h 52 min to 11 h 34 min
Cloud cover
74%
Humidity
89%
Dew point
44°F
Wind
6.0 mph

Every day of the month

A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.

DateNormal highNormal lowRecord highRecord lowChance wetChance of snow
Sep 159°F48°F73°F 199335°F 197764%0%
Sep 259°F48°F76°F 193834°F 196264%0%
Sep 358°F48°F74°F 193835°F 196465%0%
Sep 458°F48°F79°F 194134°F 193765%0%
Sep 558°F48°F75°F 195729°F 199265%0%
Sep 658°F47°F77°F 193736°F 198566%0%
Sep 758°F47°F80°F 199535°F 193266%0%
Sep 857°F47°F69°F 193132°F 196466%0%
Sep 957°F47°F70°F 198933°F 196466%0%
Sep 1057°F47°F74°F 202334°F 194366%0%
Sep 1157°F47°F70°F 194132°F 197066%0%
Sep 1257°F46°F73°F 194132°F 193967%0%
Sep 1356°F46°F69°F 196026°F 199267%0%
Sep 1456°F46°F81°F 193824°F 199267%0%
Sep 1556°F46°F77°F 193831°F 197367%0%
Sep 1656°F46°F74°F 193731°F 194867%0%
Sep 1756°F46°F70°F 193730°F 192667%0%
Sep 1855°F46°F68°F 196731°F 197368%0%
Sep 1955°F45°F65°F 199533°F 194168%0%
Sep 2055°F45°F73°F 199533°F 192668%0%
Sep 2155°F45°F74°F 199532°F 195568%0%
Sep 2254°F45°F70°F 199527°F 197268%0%
Sep 2354°F45°F71°F 199527°F 192669%0%
Sep 2454°F44°F74°F 199525°F 197269%0%
Sep 2554°F44°F69°F 198924°F 197269%0%
Sep 2653°F44°F68°F 199122°F 197269%0%
Sep 2753°F44°F65°F 201729°F 195170%0%
Sep 2853°F44°F61°F 192723°F 197170%0%
Sep 2953°F44°F64°F 200330°F 200970%0%
Sep 3052°F43°F69°F 202031°F 195070%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Petersburg, in percent, and of at least 0.1 inch of snowfall.0204060801102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (AKDT).

September 1
sunrise 5:55 AM, sunset 7:47 PM
September 30
sunrise 6:54 AM, sunset 6:28 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00025329 (Petersburg 1), public domain. Records: NOAA GHCN-Daily, station USW00025329, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.