Photo: Schwerdf · CC BY 4.0St. Augustine sits near the top of U.S. towns for mild winters
Peak summer warmth arrives in July, with afternoons near 90°. Its yearly precipitation tops that of 91% of U.S. towns. Compared with 1901–2000, the average now sits 1.3° higher. For walks and days out, the stretch from October to May brings highs of 66–84°.
A year in St. Augustine at a glance
Each month’s typical high and low, and what it brings.
What stands out about St. Augustine’s climate
Compared with towns across the U.S., with St. Augustine’s place in Florida beside it.
What a year in St. Augustine feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
A freeze most winters
Frost and day counts come from NOAA’s station at St Augustine Lighthouse, FL, 1.6 miles from the town’s center, at about the same height.
The 2023 USDA map puts St. Augustine’s center in zone 9b: the coldest night of a typical winter, averaged over 1991–2020, reaches about 29°. Plant labels use the zone; frost dates tell you when to plant.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
About 53 inches of rain a year
September is the wettest month and November the driest. Rain falls on about 118 days a year. Snow is rare: about 0.0" in a normal year at St Augustine Lighthouse, FL, so most winters see none.
Rain + melted snow by month
Inches of water
Heating and cooling a home in St. Augustine
21% of the work is heating, so air conditioning is the bigger bill. No month averages under 55°.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at St Augustine Lighthouse, FL.
Living with St. Augustine’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
Zone 9b. Frost comes about 8 winters in 10, so tender plants can often stay out through winter.
Months with highs of 62–84° and lows of 40° or more: January, February, March, April, May, October, November and December. 7.9 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in St. Augustine from natural hazards, river flooding is the largest share (30%); heat waves, cold waves, winter storms and ice storms together are 3%. Normals are averages; the hazards page covers the extremes.
Natural hazards →St. Augustine and its neighbors
Every town next door is within a degree of St. Augustine in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like St. Augustine’s, farther away
TownRatings’ own comparison of NOAA 1991–2020 normals, not a NOAA product: places of 5,000+ at least 150 miles away, one per state, closest on January low, July high, precipitation and snow.
| Town | Jan. low | July high | Precip. | Snow |
|---|---|---|---|---|
| St. Augustine, FL | 47° | 90° | 53" | 0.0" |
| La Marque, TX | 46° | 90° | 53" | 0.2" |
| Morgan City, LA | 44° | 91° | 60" | 0.0" |
| Hilton Head Island, SC | 41° | 90° | 49" | 0.0" |
| Thomasville, GA | 39° | 91° | 53" | 0.0" |
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value. Snow and frost-free days come from the nearest weather station, so neighbors often share them.
Warmer than it used to be
The last 30 years in St. Augustine averaged 1.3° warmer than the 1900s. The biggest change is in February (+1.8°).
A smaller shift than in 56% of U.S. towns.
Change by month
The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.
How St. Augustine compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with St. Augustine’s place among Florida’s.
St. Augustine weather by month
Highs, lows and precipitation from NOAA’s grid at St. Augustine’s center; snow, wet days and snow on the ground from St Augustine Lighthouse, FL. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 66° | 47° | 3.1" | 0.0" | 9 | 0 | 50° – 63° |
| February | 68° | 50° | 3.0" | 0.0" | 8 | 0 | 51° – 68° |
| March | 73° | 54° | 3.3" | 0.0" | 9 | 0 | 57° – 71° |
| April | 79° | 61° | 2.8" | 0.0" | 7 | 0 | 65° – 74° |
| May | 84° | 67° | 3.4" | 0.0" | 7 | 0 | 71° – 79° |
| June | 88° | 72° | 6.6" | 0.0" | 12 | 0 | 78° – 85° |
| July | 90° | 74° | 5.7" | 0.0" | 12 | 0 | 80° – 85° |
| August | 89° | 75° | 7.4" | 0.0" | 15 | 0 | 80° – 84° |
| September | 87° | 73° | 7.6" | 0.0" | 14 | 0 | 77° – 84° |
| October | 81° | 66° | 4.7" | 0.0" | 9 | 0 | 70° – 79° |
| November | 73° | 57° | 2.7" | 0.0" | 8 | 0 | 60° – 72° |
| December | 68° | 50° | 2.8" | 0.0" | 8 | 0 | 49° – 68° |
| Year | 79° | 62° | 52.9" | 0.0" | 118 | 0 |
How much a month can swing
A normal is an average. December swings the most: from 1991 to 2020 its average ranged from 49° to 68°. August is the most reliable, staying within 5°.
Where St. Augustine’s numbers come from
Normals are 30-year averages, not a forecast. How TownRatings reads climate data →
- Temperatures and precipitation: NOAA’s gridded 1991–2020 normals for the 5 km cell at St. Augustine’s center.
- Snow: St Augustine Lighthouse, FL (NOAA station in town).
- Frost, freezing nights, 90° and 100° days, heating and cooling: St Augustine Lighthouse, FL, 1.6 miles from the town’s center, at about the same height; the nearest station that passes our checks for distance, height and agreement with the grid.
- Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
- Then and now: NOAA’s gridded normals for 1901–2000 at the same cell.
- Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).
Common questions about St. Augustine’s climate
What is the weather like in St. Augustine?
A typical July afternoon reaches 90°, a January night drops to 47°, and snow is almost unheard of. Milder January nights than 95% of U.S. towns; hotter July afternoons than 79% of U.S. towns.
How cold does it get in St. Augustine in winter?
January nights average 47°. About 5 nights a year reach 32° or below. In the coldest January of the last 30 years the month averaged 50°.
How much snow does St. Augustine get?
About 0.0 inches in a normal winter at St Augustine Lighthouse, FL, so most winters see none.
How hot does it get in St. Augustine?
July, with a typical high of 90° and a low of 74°. About 62 days a year reach 90° (St Augustine Lighthouse, FL).
When is the first and last frost in St. Augustine?
There is no reliable frost date: a 32° night comes in about 79% of winters at St Augustine Lighthouse, FL, so most years bring a freeze but some pass without one.
What growing zone is St. Augustine in?
Zone 9b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 29°.
What is the best time of year to visit St. Augustine?
By one simple rule (highs of 62–84° and lows of 40° or more), January, February, March, April, May, October, November and December. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is St. Augustine getting warmer?
Yes: 1991–2020 averaged 1.3° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 56% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in St. Augustine.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.