Frost Dates for Saint Simon Mills, GA

Based on data from Brunswick Malcolm Mckinnon AP weather station, 2 miles away

Elevation: 10 ft

Frost Dates

Last Spring Frost (50%) A 50% chance that the last spring frost has already passed by this date. Most gardeners use this as their primary planting guide. February 9
First Fall Frost (50%) A 50% chance that the first fall frost has occurred by this date. Plan to harvest or protect tender plants before this date. December 26

30% Probability

Only 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 23
First Fall Frost December 13

Hard Freeze (28°F)

Last Spring Hard Freeze January 27
First Fall Hard Freeze January 8
31.17°N, 81.41°W © OpenStreetMap

Growing Season

321 Days February 9 to December 26

USDA Hardiness Zone

Hardiness 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

Learn more

Köppen Climate

The 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

Avg High Avg Temp Avg Low
Temperature table
Average monthly temperatures (°F)
Month Avg High Avg Temp Avg Low
January62°53°44°
February65°56°47°
March70°62°53°
April76°68°60°
May83°76°68°
June88°81°74°
July91°84°76°
August90°83°76°
September86°79°73°
October79°71°64°
November71°62°53°
December64°56°47°

Precipitation

Precipitation table
Average monthly precipitation (inches)
MonthPrecipitation
January5.1
February4.5
March6.3
April6.2
May5.7
June6.3
July5.9
August6.7
September7.5
October5.4
November3.5
December4.9

Sunrise / Sunset

Daylight Eastern Time (ET) Longest: 14h 02m · Shortest: 9h 58m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (Eastern Time (ET))
Month Sunrise Sunset Daylight
January7:29 AM5:40 PM10h 11m
February7:13 AM6:07 PM10h 54m
March7:42 AM7:28 PM11h 46m
April7:03 AM7:49 PM12h 46m
May6:34 AM8:09 PM13h 35m
June6:25 AM8:26 PM14h 01m
July6:36 AM8:26 PM13h 50m
August6:56 AM8:04 PM13h 08m
September7:15 AM7:25 PM12h 11m
October7:34 AM6:47 PM11h 13m
November6:59 AM5:22 PM10h 23m
December7:22 AM5:21 PM9h 59m

Nearby Stations

Brunswick, GA February 8 - December 25 Sapelo Is, GA February 20 - December 19 Woodbine, GA March 14 - November 25 Brunswick 23 S, GA February 19 - December 14 Nahunta 6ne, GA March 25 - November 15 Fernandina Beach, FL February 2 - January 4

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