Frost Dates for Harpersville, AL

Based on data from Childersburg Wtp weather station, 7 miles away

Elevation: 456 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. March 31
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. November 2

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 April 6
First Fall Frost October 28

Hard Freeze (28°F)

Last Spring Hard Freeze March 16
First Fall Hard Freeze November 12
33.34°N, 86.44°W © OpenStreetMap

Growing Season

216 Days March 31 to November 2

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 8a

Avg. annual minimum: 10 to 15°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 Light Frost (32°F)
Temperature table
Average monthly temperatures (°F)
Month Avg High Avg Temp Avg Low
January58°46°34°
February63°51°38°
March71°57°43°
April79°64°50°
May85°72°59°
June91°79°67°
July93°82°70°
August93°81°69°
September88°76°63°
October79°65°51°
November68°54°41°
December60°48°36°

Precipitation

Precipitation table
Average monthly precipitation (inches)
MonthPrecipitation
January7.8
February8.8
March9.2
April7.7
May7.1
June6.8
July5.9
August6.6
September6.0
October6.3
November7.6
December7.2

Sunrise / Sunset

Daylight Central Time (CT) Longest: 14h 12m · Shortest: 9h 48m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (Central Time (CT))
Month Sunrise Sunset Daylight
January6:54 AM4:55 PM10h 02m
February6:36 AM5:24 PM10h 49m
March7:02 AM6:48 PM11h 45m
April6:21 AM7:11 PM12h 50m
May5:50 AM7:33 PM13h 43m
June5:40 AM7:51 PM14h 11m
July5:51 AM7:51 PM14h 00m
August6:12 AM7:27 PM13h 14m
September6:34 AM6:46 PM12h 12m
October6:56 AM6:05 PM11h 09m
November6:23 AM4:38 PM10h 15m
December6:47 AM4:35 PM9h 48m

Nearby Stations

Sylacauga 4 Ne, AL April 2 - October 31 Talladega, ALApril 5 - November 1 Talladega 10 Nne, AL March 26 - November 4 Alabaster Shelby Co AP, AL March 12 - November 16 Helena, ALMarch 19 - November 8 Rockford 3 Ese, AL March 25 - November 11

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