Corydon has chilly winters and warm summers, with plenty of rain
A typical July afternoon reaches 88°, a January night drops to 25°, and about 12 inches of snow falls in a normal winter.
A year in Corydon at a glance
Each month’s typical high and low, and what it brings.
What stands out about Corydon’s climate
Read from where Corydon sits among Kentucky’s towns. The page puts what stands out first.
Warmer than it used to be
The last 30 years in Corydon averaged 0.6° warmer than the 1900s. The biggest change is in December (+1.3°).
A smaller shift than in 95% of U.S. towns.
Change by month
12 inches of snow, 48 of rain and melt
April is the wettest month and August the driest. Rain or snow falls on about 114 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
What a year in Corydon feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 207 frost-free days a year
In half of years the last 32° night comes by April 4 and the first by October 29.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
Living with Corydon’s climate
What the numbers mean for a garden, a driveway, a furnace and a free afternoon.
207 frost-free days. The last frost comes by Apr 4 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Oct 29.
About 12" a winter over 5 days with an inch or more, most in January.
Months averaging under 55° run from November through March. Heating is 75% of the year’s heating-and-cooling load.
About 40 days a year reach 90°, and July afternoons average 88°.
The nicest months are April, May, September and October.
Parks & trails →Normals are averages. Ice storms, nor’easters, floods and heat waves are on the natural hazards page.
Natural hazards →How Corydon compares
Against every U.S. town on TownTapestry, each counted once, with its place in Kentucky.
Corydon weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | 30-yr range |
|---|---|---|---|---|---|---|
| January | 42° | 25° | 3.4" | 4.3" | 10 | 26° – 43° |
| February | 47° | 28° | 3.3" | 3.2" | 9 | 25° – 46° |
| March | 57° | 37° | 4.6" | 1.7" | 12 | 39° – 59° |
| April | 68° | 46° | 4.9" | 0 | 12 | 50° – 62° |
| May | 77° | 57° | 4.9" | 0 | 12 | 62° – 74° |
| June | 85° | 65° | 4.2" | 0 | 10 | 70° – 80° |
| July | 88° | 69° | 4.4" | 0 | 9 | 74° – 84° |
| August | 88° | 67° | 3.0" | 0 | 7 | 72° – 83° |
| September | 82° | 59° | 3.5" | 0 | 7 | 66° – 76° |
| October | 70° | 47° | 3.5" | 0.2" | 8 | 54° – 64° |
| November | 56° | 37° | 3.8" | 0.1" | 9 | 39° – 53° |
| December | 46° | 29° | 4.0" | 2.9" | 10 | 24° – 47° |
| Year | 67° | 47° | 47.6" | 12.4" | 114 |
Heating and cooling a home in Corydon
75% of the work is heating.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. Source: NOAA station normals.
How much a month can swing
A normal is an average. December swings the most: from 1991 to 2020 its average ranged from 24° to 47°. June is the most reliable, staying within 9°.
Common questions about Corydon’s climate
What is the coldest month in Corydon?
January, with a typical high of 42° and a low of 25°.
What is the hottest month in Corydon?
July, with a typical high of 88° and a low of 69°. About 40 days a year reach 90°.
How much snow does Corydon get?
About 12 inches in a normal winter, most of it in January.
When is the first frost in Corydon?
In half of years the first 32° night comes by October 29, and the last spring frost by April 4.
What is the rainiest month in Corydon?
April, with 4.9 inches of rain and melted snow. The year totals 48 inches.
Neighbors talk weather
Gardens, snow, and the best days of the year in Corydon.
Your answer becomes a post in Town Square.
Temperatures and rainfall come from NOAA’s gridded climate normals for Corydon itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Henderson 8 Ssw, KY (4 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000. Today’s forecast: National Weather Service.