Frost Dates for Knottsville, KY

Based on data from Cannelton weather station, 14 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. April 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. November 7
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 April 9
First Fall Frost November 2

Hard Freeze (28°F)

Last Spring Hard Freeze March 21
First Fall Hard Freeze November 17
37.77°N, -86.90°W © OpenStreetMap

Growing Season

219 Days April 2 to November 7

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 7a

Avg. annual minimum: 0 to 5°F (−18 to −15°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

20° 40° 60° 80°
34°
High: 42°F
Avg: 34°F
Low: 27°F
Jan
38°
High: 48°F
Avg: 38°F
Low: 29°F
Feb
46°
High: 55°F
Avg: 46°F
Low: 37°F
Mar
57°
High: 68°F
Avg: 57°F
Low: 46°F
Apr
66°
High: 76°F
Avg: 66°F
Low: 57°F
May
74°
High: 83°F
Avg: 74°F
Low: 65°F
Jun
78°
High: 87°F
Avg: 78°F
Low: 69°F
Jul
77°
High: 86°F
Avg: 77°F
Low: 68°F
Aug
71°
High: 81°F
Avg: 71°F
Low: 62°F
Sep
60°
High: 70°F
Avg: 60°F
Low: 50°F
Oct
47°
High: 57°F
Avg: 47°F
Low: 38°F
Nov
39°
High: 46°F
Avg: 39°F
Low: 31°F
Dec
32°F
28°F
Avg High Avg Temp Avg Low Light Frost (32°F) Hard Frost (28°F)

Precipitation

0" 3" 6" 9" 9.1"
6.0"
5.97"
Jan
6.1"
6.08"
Feb
8.8"
8.78"
Mar
8.7"
8.70"
Apr
8.3"
8.35"
May
9.0"
9.04"
Jun
9.1"
9.06"
Jul
7.9"
7.90"
Aug
7.0"
7.02"
Sep
7.4"
7.39"
Oct
7.3"
7.28"
Nov
7.0"
7.02"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9.5h10.5h11.5h13h14h14.5h14.5h13.5h12h11h10h9.5h
Jan: 7:11 AM – 4:49 PM · 9h 39m
Feb: 6:42 AM – 5:18 PM · 10h 35m
Mar: 6:09 AM – 5:51 PM · 11h 42m
Apr: 5:30 AM – 6:30 PM · 12h 59m
May: 4:59 AM – 7:01 PM · 14h 03m
Jun: 4:42 AM – 7:18 PM · 14h 37m
Jul: 4:49 AM – 7:11 PM · 14h 23m
Aug: 5:16 AM – 6:44 PM · 13h 28m
Sep: 5:53 AM – 6:07 PM · 12h 14m
Oct: 6:30 AM – 5:30 PM · 10h 59m
Nov: 7:03 AM – 4:57 PM · 9h 55m
Dec: 7:18 AM – 4:42 PM · 9h 23m
Daylight Longest: 14h 38m · Shortest: 9h 22m

Nearby Stations

Tell City, INApril 5 - November 1 Saint Meinrad, IN April 11 - October 26 Rough Rvr Lake, KY April 17 - October 23 Mcdaniels, KY April 11 - October 26 Corners, KYApril 25 - October 16 English, INApril 17 - October 19

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