Bernheim Forest, Kentucky climate: Climate normals at a NOAA weather station
Bernheim Forest's normal year runs from 26°F January nights to 88°F July afternoons, with 52.5 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 14.0°C, January lows of −3°C, July highs of 31°C, 1,335 mm of precipitation a year.
- NOAA stationBernheim Forest
- Station IDUSC00150630
- Location37.92°N 85.66°W
- Elevation550 ft (168 m)
On October 23, the normal high in Bernheim Forest is 68°F and the normal low 44°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Bernheim Forest.
- Jan 45° 26°
- Feb 50° 29°
- Mar 59° 36°
- Apr 70° 45°
- May 78° 55°
- Jun 84° 62°
- Jul 88° 67°
- Aug 87° 65°
- Sep 81° 58°
- Oct 71° 47°
- Nov 58° 37°
- Dec 48° 30°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like at Bernheim Forest each month?
July is the warmest month, with normal highs of 88°F; January the coldest, with normal lows of 26°F. The most precipitation falls in May (5.28 in), the least in August (3.52 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 45°F | 26°F | 35.3°F | 3.83 | – | <1 | 22 | 9 h 50 min |
| February | 50°F | 29°F | 39.0°F | 3.69 | – | <1 | 19 | 10 h 50 min |
| March | 59°F | 36°F | 47.6°F | 5.13 | – | <1 | 14 | 11 h 50 min |
| April | 70°F | 45°F | 57.7°F | 5.09 | – | <1 | 4 | 13 h 10 min |
| May | 78°F | 55°F | 66.3°F | 5.28 | – | 1 | <1 | 14 h 10 min |
| June | 84°F | 62°F | 73.3°F | 4.89 | – | 6 | <1 | 14 h 50 min |
| July | 88°F | 67°F | 77.1°F | 4.81 | – | 14 | <1 | 14 h 30 min |
| August | 87°F | 65°F | 75.9°F | 3.52 | – | 12 | <1 | 13 h 40 min |
| September | 81°F | 58°F | 69.5°F | 3.59 | – | 5 | <1 | 12 h 30 min |
| October | 71°F | 47°F | 58.8°F | 4.26 | – | <1 | 2 | 11 h 20 min |
| November | 58°F | 37°F | 47.5°F | 3.87 | – | <1 | 12 | 10 h 10 min |
| December | 48°F | 30°F | 38.9°F | 4.59 | – | <1 | 19 | 9 h 30 min |
| Year (annual) | 68°F | 46°F | 57.2°F | 52.55 | – | 37 | 92 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 7°C | −3°C | 1.8°C | 97 mm |
| February | 10°C | −2°C | 3.9°C | 94 mm |
| March | 15°C | 2°C | 8.7°C | 130 mm |
| April | 21°C | 7°C | 14.3°C | 129 mm |
| May | 25°C | 13°C | 19.1°C | 134 mm |
| June | 29°C | 17°C | 22.9°C | 124 mm |
| July | 31°C | 19°C | 25.1°C | 122 mm |
| August | 31°C | 18°C | 24.4°C | 89 mm |
| September | 27°C | 14°C | 20.8°C | 91 mm |
| October | 22°C | 8°C | 14.9°C | 108 mm |
| November | 15°C | 3°C | 8.6°C | 98 mm |
| December | 9°C | −1°C | 3.8°C | 117 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Louisville Weather Office (14 miles away), gets 15 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00150630; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
Which months are mildest at Bernheim Forest?
Normal highs sit between 65°F and 85°F in April, May, June, September and October.
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00150630.
When is the last frost at Bernheim Forest?
In Bernheim Forest, the last spring frost (32°F) comes after April 18 in half of years and after May 6 in one year in ten; the first autumn frost comes before October 25 in half of years and before October 11 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- April 181 year in 10 after May 6; 9 in 10 after April 1
- First autumn frost, half of years before
- October 251 year in 10 before October 11; 9 in 10 before November 5
NOAA puts the median frost-free season at 189 days, and the season without a hard freeze (28°F) at 213 days.
A hard freeze (28°F) comes after April 4 in half of springs and before November 3 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Bernheim Forest in zone 7a in ZIP code 40110, the nearest ZIP area.
Frost dates for every NOAA station in Kentucky · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00150630; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get at Bernheim Forest?
In a normal year in Bernheim Forest, 37 days a year reach 90°F (1 of them 100°F or more) and 92 nights fall to 32°F or colder.
- Days at 90°F or more
- 37a normal year
- Days at 100°F or more
- 1a normal year
- Nights at 32°F or colder
- 92a normal year
- Days that stay below freezing
- 9high of 32°F or less
Source: NOAA NCEI 1991-2020 annual normals, station USC00150630.
How sunny is it at Bernheim Forest?
Over a year 74% of the sunlight that would reach the ground under clear skies gets through the clouds at Bernheim Forest, 4.2 kWh per square metre a day. August is the sunniest month (81%) and December the cloudiest (62%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 63% | 2.0 |
| February | 62% | 2.7 |
| March | 66% | 3.8 |
| April | 73% | 5.1 |
| May | 74% | 5.7 |
| June | 80% | 6.3 |
| July | 79% | 6.0 |
| August | 81% | 5.6 |
| September | 79% | 4.7 |
| October | 75% | 3.5 |
| November | 72% | 2.5 |
| December | 62% | 1.8 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How many heating and cooling degree days does Bernheim Forest record?
A normal year at Bernheim Forest brings 4,128 heating degree days, 23% fewer than the median U.S. place (5,373), and 1,333 cooling degree days, 47% more than the median (908). Five months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 4,246 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 921 | 0 |
| February | 727 | 0 |
| March | 544 | 5 |
| April | 251 | 32 |
| May | 79 | 117 |
| June | 7 | 256 |
| July | 0 | 375 |
| August | 2 | 339 |
| September | 35 | 171 |
| October | 226 | 34 |
| November | 527 | 4 |
| December | 811 | 0 |
| Year (annual) | 4,128 | 1,333 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00150630. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
How does Bernheim Forest's climate compare?
Bernheim Forest is warmer than 52 of the 68 places with their own NOAA record in Kentucky, and wetter than 47. Across the 7,247 U.S. stations with normals, its annual mean of 57.2°F is warmer than 67%.
In the Köppen classification computed from these normals, Bernheim Forest is Cfa: temperate, no dry season, hot summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near Bernheim Forest share this climate record?
6 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Mount Washington, KY18,863 people · 10 mi NE
- Shepherdsville, KY14,837 people · 5 mi NW
- Lebanon Junction, KY1,818 people · 7 mi SW
- Hebron Estates, KY1,051 people · 9 mi N
- Fox Chase, KY453 people · 9 mi N
- Boston, KY154 people · 9 mi S
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Bernheim Forest's climate
What is the coldest month at Bernheim Forest?
January, with a normal high of 45°F and a normal low of 26°F. The warmest is July (88°F by day, 67°F at night).
Does it snow at Bernheim Forest?
Yes. NOAA publishes no 1991-2020 snowfall normal for the station; the nearest record that keeps one, Louisville Weather Office (14 miles away), records 15 inches of snow in a normal year.
What is the rainiest month at Bernheim Forest?
May, with 5.28 in of precipitation in a normal year; the driest is August with 3.52 in.
What plant hardiness zone is Bernheim Forest in?
The USDA's 2023 map puts Bernheim Forest in zone 7a in ZIP code 40110, the nearest ZIP area.
How late can frost come at Bernheim Forest?
In half of years the last 32°F night comes after April 18; in one year in ten it comes after May 6. Waiting until May 6 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Kentucky climateThe statewide normals and every place in the state
- Bardstown, KY16 miles from this station, 56.8°F a year
- Louisville, KY19 miles from this station, 58.9°F a year
- Taylorsville, KY20 miles from this station, 55.9°F a year
- Elizabethtown, KY21 miles from this station, 55.5°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made