St. Augustine Temperatures: Averages by Month





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

The average high and low temperatures are listed below monthly and annually for the Atlantic 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. Augustine, 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 2003 to 2012. Everything else here is based on 1991 to 2020 weather.

10-year temperature averages for St. Augustine, 2003 to 2012
High °F Low °F   High °C Low °C
68 48 January 20 9
70 50 February 21 10
74 55 March 24 13
80 61 April 27 16
85 67 May 30 20
89 72 June 31 22
91 74 July 33 23
90 74 August 32 23
87 73 September 31 23
82 67 October 28 19
75 58 November 24 14
69 51 December 21 11
80 62 Year 27 17
30-year temperature averages for St. Augustine, 1991 to 2020
High °F Low °F   High °C Low °C
67 46 January 19 8
70 49 February 21 9
74 53 March 23 12
79 59 April 26 15
85 66 May 29 19
89 71 June 31 22
91 73 July 33 23
90 73 August 32 23
87 72 September 31 22
82 65 October 28 18
75 57 November 24 14
69 49 December 20 10
80 61 Year 26 16

Days of Hot Weather in St. Augustine

The hottest temperatures at St. Augustine are usually in the 90s Fahrenheit. Only once every two years on average the thermometer does rise into the 100s (over 38 °C).

The 90-degree weather can show up here as early as March and as late as October. About half of summer days have highs in the 90s.

Days per month in St. Augustine of at least 70, 80 or 90 °F
  70 °F
21 °C
80 °F
27 °C
90 °F
32 °C
January 13 1 0
February 14 3 0
March 24 7 0
April 29 15 1
May 31 26 5
June 30 29 12
July 31 31 19
August 31 31 16
September 30 29 8
October 31 21 1
November 23 7 0
December 15 2 0
Year 302 202 62

How Often St. Augustine Has Cold Temperatures

Five nights a winter at St. Augustine cool to freezing temperatures. But it normally does not get colder than 20 °F (-8 °C).

A night with frosty air can happen anytime from November to March, but is most common in January. Even after a crisp night in the city, everything thaws out during the day.

Days per month on average in St. Augustine when the minimum temperature drops to 50, 40 or 32 °F or lower
  32 °F
0 °C
40 °F
4 °C
50 °F
10 °C
January 2 8 18
February 1 5 14
March 0 2 10
April 0 0 3
May 0 0 0
June 0 0 0
July 0 0 0
August 0 0 0
September 0 0 0
October 0 0 1
November 0 2 8
December 1 6 15
Year 5 22 69
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.

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