Frost Dates for Louisville Mcalpine, KY

Elevation: 134 m

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 9

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 5
First Fall Frost November 5

Hard Freeze (28°F)

Last Spring Hard Freeze March 18
First Fall Hard Freeze November 20
38.28°N, 85.79°W © OpenStreetMap

Growing Season

223 Days March 31 to November 9

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 7a

Avg. annual minimum: 0 to 5°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) Hard Frost (28°F)
Temperature table
Average monthly temperatures (°F)
Month Avg High Avg Temp Avg Low
January43°35°26°
February48°38°29°
March57°47°37°
April69°58°47°
May77°68°58°
June85°76°66°
July89°79°70°
August88°78°69°
September82°72°62°
October70°60°50°
November57°47°38°
December47°39°31°

Precipitation

Precipitation table
Average monthly precipitation (inches)
MonthPrecipitation
January3.9
February4.1
March5.9
April6.3
May6.3
June7.4
July6.3
August6.2
September5.9
October5.2
November5.1
December5.7

Sunrise / Sunset

Daylight Eastern Time (ET) Longest: 14h 40m · Shortest: 9h 20m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (Eastern Time (ET))
Month Sunrise Sunset Daylight
January8:04 AM5:41 PM9h 37m
February7:41 AM6:15 PM10h 34m
March8:02 AM7:44 PM11h 42m
April7:13 AM8:13 PM13h 00m
May6:37 AM8:42 PM14h 05m
June6:24 AM9:03 PM14h 39m
July6:36 AM9:01 PM14h 25m
August7:03 AM8:32 PM13h 29m
September7:31 AM7:45 PM12h 14m
October7:59 AM6:58 PM10h 59m
November7:32 AM5:25 PM9h 53m
December7:59 AM5:19 PM9h 21m

Nearby Stations

Louisville Intl AP, KY March 31 - November 7 Louisville Bowman Fld, KY April 3 - November 3 Louisville Wfo, KY April 6 - November 1 Crestwood 4ne, KY April 12 - October 25 Bernheim Forest, KY April 18 - October 25 Salem, INApril 17 - October 22

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