St. Petersburg Temperatures: Averages by Month





The numbers here tell you how hot and cold the weather usually is in St. Petersburg, Florida during each month of the year.

The average high and low temperatures are listed below monthly and annually for the Gulf coast city, in both degrees Fahrenheit and Celsius.

Maximums and minimums are only part of the temperature picture. To fill in the rest, there's information on how many days a month get above or below a given temperature.

To find out how often it rises over 70, 80 or 90 °F each month in St. Petersburg, scroll down farther. There are also monthly and yearly counts of days with cool weather.

The first set of high and low temperatures are averages for 2010 to 2019. Everything else here is based on 1991 to 2020 weather.

10-year temperature averages for St. Petersburg, 2010 to 2019
High °F Low °F   High °C Low °C
70 52 January 21 11
74 56 February 23 13
77 59 March 25 15
84 66 April 29 19
88 71 May 31 21
90 75 June 32 24
90 76 July 32 24
91 77 August 33 25
90 76 September 32 24
85 70 October 29 21
78 62 November 26 17
75 58 December 24 14
82 66 Year 28 19
30-year temperature averages for St. Petersburg, 1991 to 2020
High °F Low °F   High °C Low °C
69 55 January 21 13
72 58 February 22 14
76 62 March 24 17
81 67 April 27 20
86 73 May 30 23
89 77 June 32 25
90 78 July 32 26
90 78 August 32 26
88 77 September 31 25
83 72 October 29 22
77 65 November 25 18
72 59 December 22 15
81 68 Year 27 20

Days of Hot Weather in St. Petersburg

The hottest temperatures at St. Petersburg are usually in the 90s Fahrenheit. It's not normal for the thermometer to rise into the 100s (over 38 °C).

The 90-degree weather often begins to show up in May and can last until October. Well over half of summer days have highs in the 90s.

Days per month in St. Petersburg of at least 70, 80 or 90 °F
  70 °F
21 °C
80 °F
27 °C
90 °F
32 °C
January 17 2 0
February 20 4 0
March 26 12 0
April 29 22 0
May 31 29 5
June 30 30 15
July 31 31 17
August 31 31 19
September 30 30 12
October 30 27 2
November 27 10 0
December 21 5 0
Year 322 231 71

How Often St. Petersburg Has Cold Temperatures

A cold night in St. Petersburg is not at all chilly by most American standards. Normally only two nights a winter drop to 40 °F or less.

It's unusual for frost to occur here. An overnight low of 32 °F (0 °C) or below typically happens just once a decade.

Days per month on average in St. Petersburg when the minimum temperature drops to 50 or 40 °F or lower
  40 °F
4 °C
50 °F
10 °C
January 1 9
February 0 4
March 0 1
April 0 0
May 0 0
June 0 0
July 0 0
August 0 0
September 0 0
October 0 0
November 0 1
December 0 4
Year 2 18
References

Jay Lawrimore, Ron Ray, Scott Applequist, Bryant Korzeniewski, Matthew Menne. 2016. Global Summary of the Month and Year, Version 1.0. NOAA National Centers for Environmental Information.

NOAA National Centers for Environmental Information (NCEI). Climate Normals.

Florida Temperatures
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