Frost Dates for St. Marys, GA

Based on data from Fernandina Beach weather station, 7 miles away

Frost Dates

Last Spring Frost (50%) iA 50% chance that the last spring frost has already passed by this date. Most gardeners use this as their primary planting guide. February 2
First Fall Frost (50%) iA 50% chance that the first fall frost has occurred by this date. Plan to harvest or protect tender plants before this date. January 4

This location has a nearly year-round growing season with a brief frost risk period in winter.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

30% Probability iOnly a 30% chance of frost remaining by this date. Use these dates for a safer planting window, especially for tender plants sensitive to cold.

Last Spring Frost February 14
First Fall Frost December 27

Hard Freeze (28°F)

Last Spring Hard Freeze January 26
First Fall Hard Freeze January 13
30.73°N, -81.55°W © OpenStreetMap

Growing Season

337 Days February 2 to January 4

USDA Hardiness Zone iHardiness zones indicate which perennial plants can survive winter in your area. For annual vegetables, frost dates and growing season length matter more than hardiness zone.

Zone 9b

Avg. annual minimum: 25 to 30°F (−4 to −1°C)

Learn more

Köppen Climate iThe Köppen climate classification system categorizes climates based on temperature and precipitation patterns.

Cfa Humid Subtropical

Hot, humid summers and mild winters with rain year-round. Long growing seasons support a wide variety of vegetables, fruits, and ornamentals. The most common climate in the eastern US.

Köppen climate map

Temperature

40° 60° 80° 100°
55°
High: 64°F
Avg: 55°F
Low: 45°F
Jan
58°
High: 67°F
Avg: 58°F
Low: 49°F
Feb
63°
High: 72°F
Avg: 63°F
Low: 54°F
Mar
69°
High: 77°F
Avg: 69°F
Low: 60°F
Apr
76°
High: 84°F
Avg: 76°F
Low: 68°F
May
81°
High: 88°F
Avg: 81°F
Low: 73°F
Jun
83°
High: 91°F
Avg: 83°F
Low: 75°F
Jul
82°
High: 90°F
Avg: 82°F
Low: 75°F
Aug
80°
High: 86°F
Avg: 80°F
Low: 73°F
Sep
73°
High: 80°F
Avg: 73°F
Low: 65°F
Oct
64°
High: 72°F
Avg: 64°F
Low: 56°F
Nov
58°
High: 66°F
Avg: 58°F
Low: 49°F
Dec
Avg High Avg Temp Avg Low

Precipitation

0" 3" 6" 8.1"
4.4"
4.43"
Jan
5.3"
5.35"
Feb
6.2"
6.22"
Mar
6.5"
6.55"
Apr
7.0"
6.95"
May
7.8"
7.85"
Jun
8.1"
8.06"
Jul
7.3"
7.31"
Aug
8.0"
7.98"
Sep
5.9"
5.89"
Oct
3.1"
3.13"
Nov
3.3"
3.26"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec10h11h12h13h13.5h14h14h13h12h11h10.5h10h
Jan: 6:53 AM – 5:07 PM · 10h 13m
Feb: 6:32 AM – 5:28 PM · 10h 56m
Mar: 6:07 AM – 5:53 PM · 11h 47m
Apr: 5:37 AM – 6:23 PM · 12h 45m
May: 5:13 AM – 6:47 PM · 13h 33m
Jun: 5:01 AM – 6:59 PM · 13h 58m
Jul: 5:06 AM – 6:54 PM · 13h 48m
Aug: 5:27 AM – 6:33 PM · 13h 07m
Sep: 5:55 AM – 6:05 PM · 12h 11m
Oct: 6:23 AM – 5:37 PM · 11h 14m
Nov: 6:48 AM – 5:12 PM · 10h 25m
Dec: 6:59 AM – 5:01 PM · 10h 01m
Daylight Longest: 13h 59m · Shortest: 10h 01m

Nearby Stations

Brunswick 23 S, GA February 19 - December 14 Mayport Pilot Stn, FL February 1 - January 5 Jacksonville, FL February 25 - December 7 Jacksonville Craig Muni AP, FL February 9 - December 31 Woodbine, GA March 14 - November 25 Jacksonville Beach, FL January 31 - January 10

Plan Your Garden with Planter

Now that you know your frost dates, use Planter to plan your veggie garden! Planter is an easy drag-and-drop garden planner with personalized planting schedules.

Try Planter For Free

Available everywhere: iOS, Android, web, and more!

Planter app garden planner preview