Climateby Month

St. Augustine, FL climate by month

NOAA 1991-2020 normals · 5 ft elevation

St. Augustine has hot and oppressively humid summers and mild winters. Highs peak at 91°F in July and fall to 68°F in January. The wettest month is August (about 15 wet days) and the driest is April (about 7). By our comfort score the best months are February, March and November.

Warmest month
91°F
July normal high
Coldest month
48°F
January normal low
Wet days a year
118
50.6 in of precipitation
Muggy days a year
160
dew point 65°F or higher

How warm is St. Augustine?

Normal highs range from 68°F in January to 91°F in July.

40°50°60°70°80°90°100° January: normal high 68°F (20°C), low 48°F (9°C) 68° 48° February: normal high 70°F (21°C), low 50°F (10°C) March: normal high 74°F (23°C), low 55°F (13°C) April: normal high 80°F (27°C), low 61°F (16°C) May: normal high 85°F (29°C), low 67°F (19°C) June: normal high 89°F (32°C), low 72°F (22°C) July: normal high 91°F (33°C), low 74°F (23°C) 91° 74° August: normal high 90°F (32°C), low 74°F (23°C) September: normal high 87°F (31°C), low 73°F (23°C) October: normal high 82°F (28°C), low 67°F (19°C) November: normal high 75°F (24°C), low 58°F (14°C) December: normal high 69°F (21°C), low 51°F (11°C) JFMAMJJASOND

Bars run from the normal low to the normal high for each month.

How rainy is St. Augustine?

August has the most wet days (about 15); the year brings about 51 in of precipitation.

January: 9 wet days February: 8 wet days March: 9 wet days April: 7 wet days 7 May: 7 wet days June: 12 wet days July: 12 wet days August: 15 wet days 15 September: 14 wet days October: 9 wet days November: 8 wet days December: 8 wet days JFMAMJJASOND

Wet day: at least 0.01 in of rain or melted snow, counted from daily records 1991-2020.

How humid is St. Augustine?

Muggy days peak in August, at about 31 days.

January: 1 muggy days February: 1 muggy days 1 March: 2 muggy days April: 5 muggy days May: 15 muggy days June: 27 muggy days July: 31 muggy days August: 31 muggy days 31 September: 27 muggy days October: 15 muggy days November: 5 muggy days December: 2 muggy days JFMAMJJASOND

Muggy day: daily mean dew point of 65°F or higher, from hourly observations 1991-2020 at Jacksonville NAS, 32 mi NW of the city center (the nearest airport with complete hourly records).

How much daylight?

Daylight ranges from about 10.3 hours in December to 14.0 hours in June.

January: 10.5 hours of daylight February: 11.1 hours of daylight March: 12.0 hours of daylight April: 12.9 hours of daylight May: 13.7 hours of daylight June: 14.0 hours of daylight 14.0 July: 13.8 hours of daylight August: 13.2 hours of daylight September: 12.3 hours of daylight October: 11.4 hours of daylight November: 10.7 hours of daylight December: 10.3 hours of daylight 10.3 JFMAMJJASOND
See all numbers
Monthly climate normals and day counts for St. Augustine, 1991-2020
MonthHighLowPrecip.Wet daysMuggy daysDaylight
January 68°F48°F 2.7 in9 1 10.5 h
February 70°F50°F 2.7 in8 1 11.1 h
March 74°F55°F 3.4 in9 2 12.0 h
April 80°F61°F 2.9 in7 5 12.9 h
May 85°F67°F 3.7 in7 15 13.7 h
June 89°F72°F 6.3 in12 27 14.0 h
July 91°F74°F 4.9 in12 31 13.8 h
August 90°F74°F 7.2 in15 31 13.2 h
September 87°F73°F 7.2 in14 27 12.3 h
October 82°F67°F 4.4 in9 15 11.4 h
November 75°F58°F 2.3 in8 5 10.7 h
December 69°F51°F 3.0 in8 2 10.3 h

High and low: NOAA 1991-2020 normal daily high and low. Wet days: at least 0.01 in of rain or melted snow. Muggy days: daily mean dew point 65°F or higher.

Best months to visit St. Augustine

By our comfort score, the best months are February, March and November.

Comfort score by month (0-100) and its parts, in days per month
MonthScoreComfortableNotable rainHot or cold
Jan 641550
Feb 681650
Mar 701750
Apr 671241
May 53355
Jun 430812
Jul 380819
Aug 3601116
Sep 41098
Oct 54661
Nov 671650
Dec 651640

Score = 40 × share of comfortable days + 25 × share of days without notable rain + 20 × share of days neither hot (90°F+) nor cold (high 40°F or below) + 15 × daylight. How the score works.

Frost dates in St. Augustine

The last spring frost typically comes around Feb 1, and the first fall frost around Jan 5, leaving 334 frost-free days in a typical year.

Frost and freeze dates for St. Augustine
Typical date1 year in 10
Last spring frost (32°F)Feb 1after Mar 3
First fall frost (32°F)Jan 5before Dec 7
Hard freeze (28°F)in about 41% of years; no typical date
Frost-free season334 daysunder 297 days

"Typical" is the date with a 50% chance of a later spring frost (or earlier fall frost). Planting after the "1 year in 10" spring date gives a 90% chance of no further frost. The Old Farmer's Almanac publishes 30% dates, which fall between our typical and 1-in-10 dates.

Station: St Augustine Lighthouse (USC00087826), NOAA 1991-2020 freeze probabilities. Frost dates for every city in Florida.

Hottest and coldest readings, 1991-2020

The highest reading was 101°F (June 15, 2010, and 1 other day); the lowest was 21°F (February 5, 1996).

From the temperature station's daily records with NOAA quality flags removed. Not an all-time record.

Near St. Augustine

Similar climates elsewhere

Where the numbers come from

  • Temperature, rain and frost dates: St Augustine Lighthouse (USC00087826), 1.7 mi ESE of the city center, 12 ft . NOAA normals and daily records, 1991-2020.
  • Snowfall and snow depth: Hastings 4NE (USC00083874), 13 mi SW of the city center, 10 ft . NOAA normals and daily records, 1991-2020.
  • Humidity and wind by hour: Jacksonville NAS (USW00093837), 32 mi NW of the city center, 20 ft . NOAA normals and daily records, 1991-2020.
  • Daily humidity and wind: Jacksonville NAS (722065-93837), 32 mi NW of the city center, 20 ft . Hourly observations, 1991-2020.
  • Not available for this location: cloud cover (no station close enough or similar enough in elevation).

Distances from the city center (USGS). Methodology · Report an error