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St. Petersburg Weather in August

In August, St. Petersburg averages a high of 21°C (70°F) and a low of 13°C (56°F), from 54 years of daily records (1971–2025).

21°C
Average high
70°F
13°C
Average low
56°F
37°C
Record high
99°F · August 7, 2010
3°C
Record low
37°F · August 27, 1973

What August Is Like in St. Petersburg

  • 6 of the 10 warmest Augusts on record in St. Petersburg have come since 2010.
  • August in St. Petersburg has become 1.6°C (2.9°F) warmer on average: the 2010–2024 average against 1970–1989.
  • The coldest August reading, 3°C (37°F) on August 27, 1973, has not been matched in 52 years.
  • August is the wettest month of the year in St. Petersburg, averaging 83 mm of rain.

At least 1 mm of rain falls on 35% of August days, and the month averages 83 mm in total.

Average daytime high in St. Petersburg, every August since 1971
16°C22°C27°C19801990200020102020August 1971: 20.3°CAugust 1972: 24.7°CAugust 1973: 19.6°CAugust 1974: 19.3°CAugust 1975: 21.1°CAugust 1976: 18.0°CAugust 1977: 19.7°CAugust 1978: 18.0°CAugust 1979: 21.2°CAugust 1980: 18.7°CAugust 1981: 18.8°CAugust 1982: 20.4°CAugust 1983: 20.8°CAugust 1984: 19.4°CAugust 1985: 22.1°CAugust 1986: 19.3°CAugust 1987: 17.4°CAugust 1988: 18.6°CAugust 1989: 20.1°CAugust 1990: 20.6°CAugust 1991: 21.3°CAugust 1992: 20.5°CAugust 1993: 18.7°CAugust 1994: 20.5°CAugust 1995: 21.1°CAugust 1996: 23.2°CAugust 1997: 23.4°CAugust 1998: 18.0°CAugust 1999: 20.8°CAugust 2000: 19.9°CAugust 2001: 20.7°CAugust 2002: 23.4°CAugust 2003: 20.1°CAugust 2004: 21.8°CAugust 2005: 21.8°CAugust 2006: 23.3°CAugust 2007: 24.1°CAugust 2008: 19.6°CAugust 2009: 20.5°CAugust 2010: 23.2°CAugust 2011: 21.0°CAugust 2012: 19.9°CAugust 2013: 22.4°CAugust 2014: 22.6°CAugust 2015: 22.7°CAugust 2016: 20.9°CAugust 2017: 20.8°CAugust 2018: 23.6°CAugust 2019: 21.2°CAugust 2020: 21.5°CAugust 2021: 20.7°CAugust 2022: 26.2°CAugust 2023: 24.1°CAugust 2024: 23.1°C
Warmest: 2022 (26.2°C)Latest: 2024 (23.1°C)10-year averageLong-run average (21.0°C)

Look Up a Day in August

See the weather in St. Petersburg on any August date, year by year.

Source: NOAA GHCN-Daily, St. Petersburg (1971–2025); Petrokrepost (2019–2025). Averages cover 1971–2025. How we compute this

← PreviousSt. Petersburg in JulyNext →St. Petersburg in September

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