St. Petersburg FL Average Temperatures 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

St. Petersburg Temperatures: Averages by Month

Days of Hot Weather in St. Petersburg

How Often St. Petersburg Has Cold Temperatures

References

More on Weather in Florida