Fort Knox, KY climate
Fort Knox has chilly winters and warm summers, with plenty of rain. A typical July afternoon reaches 87°, a January night drops to 25°, and about 5 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Fort Knox feels like
Winter
Spring
Summer
Fall
Fort Knox 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 | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 43° | 25° | 3.6" | 2.0" | 11 | 1 | 26° – 43° |
| February | 47° | 28° | 3.7" | 1.6" | 10 | 0 | 26° – 46° |
| March | 57° | 35° | 4.7" | 0.1" | 12 | 0 | 39° – 58° |
| April | 68° | 45° | 4.9" | 0 | 11 | 0 | 51° – 62° |
| May | 76° | 55° | 5.2" | 0 | 12 | 0 | 59° – 72° |
| June | 84° | 63° | 4.6" | 0 | 11 | 0 | 69° – 78° |
| July | 87° | 66° | 4.4" | 0 | 9 | 0 | 72° – 82° |
| August | 87° | 65° | 3.5" | 0 | 8 | 0 | 71° – 82° |
| September | 81° | 57° | 3.6" | 0 | 7 | 0 | 64° – 75° |
| October | 69° | 46° | 3.7" | 0 | 9 | 0 | 53° – 63° |
| November | 57° | 35° | 3.6" | 0 | 9 | 0 | 40° – 52° |
| December | 46° | 29° | 4.4" | 0.8" | 12 | 0 | 26° – 48° |
| Year | 67° | 46° | 49.9" | 4.5" | 122 | 1 |
“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more. The 30-year range is the coldest and warmest that month’s average temperature got between 1991 and 2020.
Rain and snow in Fort Knox
Fort Knox gets 50 inches of rain and melted snow a year. May is the wettest month and August the driest. Rain or snow falls on about 122 days a year.
About 186 frost-free days a year
In half of years the last 32° night comes by April 19 and the first one by October 24. That leaves about 186 frost-free days for gardens, longer than 59% of U.S. towns.
Heating and cooling a home in Fort Knox
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Fort Knox, 80% of that work is heating and 20% is cooling, so the furnace matters far more than the air conditioner.
Degree days measure how far each day’s average temperature falls below or rises above 65°, added up over a year. Source: NOAA station normals.
Fort Knox and its neighbors
Fort Knox borders 1 town with climate data. January nights across them vary by 0.0°. Radcliff has both the coldest January nights (25°) and the hottest July afternoons (87°). Fort Knox’s January low is 25° and its July high 87°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Fort Knox compares
Compared with every U.S. town and city on TownTapestry, each counted once.
Warmer than it used to be
The last 30 years in Fort Knox averaged 1.1° warmer than the 1900s. The biggest change is in December (+2.1°). The shift is smaller than in 61% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Fort Knox’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. December swings the most: between 1991 and 2020 its average temperature ranged from 26° to 48°. June is the most reliable, staying within 9°.
Common questions about Fort Knox’s climate
What is the coldest month in Fort Knox?
January, with a typical high of 43° and a low of 25°.
What is the hottest month in Fort Knox?
July, with a typical high of 87° and a low of 66°. About 27 days a year reach 90°.
How much snow does Fort Knox get?
About 5 inches in a normal winter, most of it in January.
When is the first frost in Fort Knox?
In half of years the first 32° night comes by October 24, and the last spring frost by April 19.
What is the rainiest month in Fort Knox?
May, with 5.2 inches of rain and melted snow. The year totals 50 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Fort Knox itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Elizabethtown Wp Cs, KY (15 mi, snow) and Brandenburg, KY (9 mi, frost, heat and degree days). Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.