Petersburg Weather in August
Average highs run from 63°F on August 1 to 59°F on August 31, and lows from 52°F to 48°F. Normal precipitation for the month is 8.21 in over about 17 wet days.
August day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
August at a glance
- Average high
- 61°F
- Average low
- 50°F
- Precipitation
- 8.21 in
- Record high
- 83°FAug 1, 2013
- Record low
- 32°FAug 27, 1948
- Chance of a freeze
- 0%
- Daylight
- 16 h 11 min to 13 h 57 min
- Cloud cover
- 72%
- Humidity
- 86%
- Dew point
- 49°F
- Wind
- 4.7 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.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Aug 1 | 63°F | 52°F | 83°F 2013 | 38°F 1973 | 52% | 0% |
| Aug 2 | 63°F | 52°F | 78°F 2013 | 40°F 1926 | 52% | 0% |
| Aug 3 | 63°F | 52°F | 77°F 1962 | 39°F 1975 | 52% | 0% |
| Aug 4 | 63°F | 52°F | 77°F 1941 | 38°F 1966 | 52% | 0% |
| Aug 5 | 63°F | 52°F | 78°F 1941 | 39°F 1966 | 53% | 0% |
| Aug 6 | 62°F | 51°F | 78°F 1930 | 40°F 1926 | 53% | 0% |
| Aug 7 | 62°F | 51°F | 79°F 1942 | 38°F 1939 | 53% | 0% |
| Aug 8 | 62°F | 51°F | 78°F 1993 | 40°F 1926 | 53% | 0% |
| Aug 9 | 62°F | 51°F | 78°F 1941 | 39°F 1938 | 54% | 0% |
| Aug 10 | 62°F | 51°F | 82°F 2004 | 37°F 1959 | 54% | 0% |
| Aug 11 | 62°F | 51°F | 77°F 1993 | 38°F 1974 | 54% | 0% |
| Aug 12 | 62°F | 51°F | 77°F 1952 | 41°F 1974 | 55% | 0% |
| Aug 13 | 62°F | 51°F | 80°F 2005 | 37°F 1965 | 55% | 0% |
| Aug 14 | 62°F | 51°F | 78°F 1977 | 39°F 1937 | 56% | 0% |
| Aug 15 | 62°F | 51°F | 81°F 2004 | 40°F 1946 | 56% | 0% |
| Aug 16 | 62°F | 51°F | 74°F 1932 | 35°F 1973 | 57% | 0% |
| Aug 17 | 61°F | 50°F | 75°F 2004 | 34°F 1957 | 57% | 0% |
| Aug 18 | 61°F | 50°F | 77°F 1957 | 34°F 1973 | 58% | 0% |
| Aug 19 | 61°F | 50°F | 78°F 1977 | 35°F 1947 | 58% | 0% |
| Aug 20 | 61°F | 50°F | 79°F 1977 | 38°F 1973 | 58% | 0% |
| Aug 21 | 61°F | 50°F | 76°F 2018 | 37°F 1938 | 59% | 0% |
| Aug 22 | 61°F | 50°F | 82°F 2004 | 37°F 1938 | 60% | 0% |
| Aug 23 | 60°F | 50°F | 76°F 1927 | 35°F 1969 | 60% | 0% |
| Aug 24 | 60°F | 49°F | 74°F 1987 | 35°F 1938 | 60% | 0% |
| Aug 25 | 60°F | 49°F | 76°F 1987 | 34°F 1948 | 61% | 0% |
| Aug 26 | 60°F | 49°F | 78°F 1987 | 33°F 1948 | 61% | 0% |
| Aug 27 | 60°F | 49°F | 77°F 1941 | 32°F 1948 | 62% | 0% |
| Aug 28 | 60°F | 49°F | 78°F 1941 | 33°F 1992 | 62% | 0% |
| Aug 29 | 59°F | 49°F | 74°F 2003 | 37°F 1958 | 63% | 0% |
| Aug 30 | 59°F | 48°F | 72°F 1971 | 36°F 1960 | 63% | 0% |
| Aug 31 | 59°F | 48°F | 71°F 1930 | 33°F 1973 | 64% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (AKDT).
- August 1
- sunrise 4:52 AM, sunset 9:03 PM
- August 31
- sunrise 5:53 AM, sunset 7:50 PM
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.