Louisville Bowman Field, Kentucky climate: Climate normals at a NOAA weather station
Louisville Bowman Field's normal year runs from 27°F January nights to 88°F July afternoons, with 48.1 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 14.3°C, January lows of −3°C, July highs of 31°C, 1,222 mm of precipitation a year.
- NOAA stationLouisville Bowman Field
- Station IDUSW00013810
- Location38.23°N 85.66°W
- Elevation540 ft (165 m)
On October 23, the normal high in Louisville Bowman Field is 67°F and the normal low 46°F, and the chance of measurable rain or snow is 31%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Louisville Bowman Field.
- Jan 43° 27°
- Feb 48° 30°
- Mar 57° 38°
- Apr 69° 48°
- May 77° 57°
- Jun 85° 66°
- Jul 88° 69°
- Aug 87° 68°
- Sep 81° 60°
- Oct 69° 48°
- Nov 57° 38°
- Dec 46° 31°
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 Louisville Bowman Field each month?
July is the warmest month, with normal highs of 88°F; January the coldest, with normal lows of 27°F. The most precipitation falls in May (5.16 in), the least in February (3.27 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 43°F | 27°F | 35.0°F | 3.28 | 10 | <1 | 22 | 9 h 50 min |
| February | 48°F | 30°F | 38.7°F | 3.27 | 11 | <1 | 18 | 10 h 50 min |
| March | 57°F | 38°F | 47.4°F | 4.37 | 12 | <1 | 10 | 11 h 50 min |
| April | 69°F | 48°F | 58.1°F | 4.69 | 12 | <1 | 1 | 13 h 10 min |
| May | 77°F | 57°F | 67.2°F | 5.16 | 14 | 1 | <1 | 14 h 10 min |
| June | 85°F | 66°F | 75.4°F | 4.68 | 12 | 7 | <1 | 14 h 50 min |
| July | 88°F | 69°F | 78.6°F | 4.56 | 11 | 13 | <1 | 14 h 40 min |
| August | 87°F | 68°F | 77.6°F | 3.53 | 9 | 11 | <1 | 13 h 40 min |
| September | 81°F | 60°F | 70.4°F | 3.61 | 9 | 5 | <1 | 12 h 30 min |
| October | 69°F | 48°F | 58.8°F | 3.65 | 9 | 1 | 1 | 11 h 20 min |
| November | 57°F | 38°F | 47.2°F | 3.44 | 10 | <1 | 9 | 10 h 10 min |
| December | 46°F | 31°F | 38.8°F | 3.88 | 12 | <1 | 19 | 9 h 30 min |
| Year (annual) | 67°F | 48°F | 57.8°F | 48.12 | 131 | 38 | 80 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 6°C | −3°C | 1.7°C | 83 mm |
| February | 9°C | −1°C | 3.7°C | 83 mm |
| March | 14°C | 3°C | 8.6°C | 111 mm |
| April | 20°C | 9°C | 14.5°C | 119 mm |
| May | 25°C | 14°C | 19.6°C | 131 mm |
| June | 29°C | 19°C | 24.1°C | 119 mm |
| July | 31°C | 21°C | 25.9°C | 116 mm |
| August | 31°C | 20°C | 25.3°C | 90 mm |
| September | 27°C | 16°C | 21.3°C | 92 mm |
| October | 21°C | 9°C | 14.9°C | 93 mm |
| November | 14°C | 3°C | 8.4°C | 87 mm |
| December | 8°C | 0°C | 3.8°C | 99 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Louisville (5 miles away), gets 13 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USW00013810; 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 Louisville Bowman Field?
Normal highs sit between 65°F and 85°F in April, May, June, September and October. Of those, September has the fewest days with rain (9).
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 USW00013810.
When is the last frost at Louisville Bowman Field?
In Louisville Bowman Field, the last spring frost (32°F) comes after April 3 in half of years and after April 19 in one year in ten; the first autumn frost comes before November 3 in half of years and before October 21 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 31 year in 10 after April 19; 9 in 10 after March 18
- First autumn frost, half of years before
- November 31 year in 10 before October 21; 9 in 10 before November 16
NOAA puts the median frost-free season at 214 days, and the season without a hard freeze (28°F) at 237 days.
A hard freeze (28°F) comes after March 22 in half of springs and before November 13 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Louisville Bowman Field in zone 7a in ZIP code 40205, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, the station is in zone 7b: the coldest night of a typical year reaches 6°F (20 complete years); the map interpolates between stations and terrain, so the station and the ZIP area can differ by half a zone.
Frost dates for every NOAA station in Kentucky · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USW00013810; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. 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 Louisville Bowman Field?
In a normal year in Louisville Bowman Field, 38 days a year reach 90°F (1 of them 100°F or more), 80 nights fall to 32°F or colder and 131 days bring measurable precipitation.
- Days at 90°F or more
- 38a normal year
- Days at 100°F or more
- 1a normal year
- Nights at 32°F or colder
- 80a normal year
- Days that stay below freezing
- 15high of 32°F or less
- Days with 0.01 inch of precipitation
- 131a normal year
The highest temperature in this station's record (since 1937) is 105°F, on June 29, 2012; the lowest is −15°F, on January 8, 1942.
The wettest calendar year on that record is 2011, with 69.83 in.
Source: NOAA NCEI 1991-2020 annual normals, station USW00013810; records: ACIS (NOAA Regional Climate Centers), station USW00013810. Records use complete months only; a month missing more than three days is left out.
How humid and windy is it at Louisville Bowman Field, and how clear are the skies?
The summer (June-August) dew point averages 65°F. The muggiest month is July, with an average dew point of 66°F, above the 65°F at which most people call the air sticky; the driest air comes in January (25°F). February is the windiest month (7.5 mph on average), and September has the most clear or nearly clear hours (70%).
| Month | Dew point | Humidity | Afternoon humidity | Wind | Clear or few clouds | Overcast |
|---|---|---|---|---|---|---|
| January | 25°F | 66% | 53% | 7.0 mph | 45% | 43% |
| February | 30°F | 62% | 49% | 7.5 mph | 45% | 42% |
| March | 38°F | 59% | 45% | 7.3 mph | 52% | 31% |
| April | 49°F | 63% | 47% | 6.4 mph | 53% | 28% |
| May | 60°F | 68% | 52% | 5.5 mph | 57% | 20% |
| June | 66°F | 68% | 52% | 5.0 mph | 64% | 11% |
| July | 66°F | 68% | 50% | 4.5 mph | 67% | 11% |
| August | 64°F | 69% | 50% | 4.5 mph | 66% | 13% |
| September | 53°F | 68% | 46% | 4.7 mph | 70% | 16% |
| October | 42°F | 66% | 49% | 5.6 mph | 57% | 29% |
| November | 33°F | 68% | 55% | 6.6 mph | 48% | 38% |
| December | 27°F | 70% | 59% | 6.9 mph | 42% | 48% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00013810. Monthly averages of all hours; afternoon humidity at 3 p.m. local standard time; sky as the share of hours NOAA's observations rate clear or few clouds (a dash where NOAA publishes no sky value).
How sunny is it at Louisville Bowman Field?
Over a year 73% of the sunlight that would reach the ground under clear skies gets through the clouds at Louisville Bowman Field, 4.0 kWh per square metre a day. August is the sunniest month (81%) and December the cloudiest (61%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 61% | 1.9 |
| February | 62% | 2.6 |
| March | 66% | 3.7 |
| April | 72% | 5.0 |
| May | 72% | 5.5 |
| June | 80% | 6.3 |
| July | 79% | 6.0 |
| August | 81% | 5.5 |
| September | 79% | 4.6 |
| October | 74% | 3.3 |
| November | 70% | 2.3 |
| December | 61% | 1.7 |
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 Louisville Bowman Field record?
A normal year at Louisville Bowman Field brings 4,151 heating degree days, 23% fewer than the median U.S. place (5,373), and 1,543 cooling degree days, 70% 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 4,455 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 930 | 0 |
| February | 738 | 0 |
| March | 552 | 7 |
| April | 244 | 36 |
| May | 70 | 140 |
| June | 3 | 313 |
| July | 0 | 422 |
| August | 0 | 391 |
| September | 32 | 194 |
| October | 232 | 38 |
| November | 536 | 2 |
| December | 812 | 0 |
| Year (annual) | 4,151 | 1,543 |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00013810. 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.
Have recent years at Louisville Bowman Field been warmer than normal?
2025 averaged 57.3°F, 0.5°F below the 1991-2020 normal of 57.8°F. 3 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 58.6°F | +0.8°F | 45.55 |
| 2022 | 57.6°F | −0.2°F | 41.31 |
| 2023 | 58.2°F | +0.4°F | 38.69 |
| 2024 | 59.1°F | +1.3°F | 50.44 |
| 2025 | 57.3°F | −0.5°F | 48.52 |
Source: observed years: ACIS, station USW00013810. A year counts only with all twelve months complete.
How does Louisville Bowman Field's climate compare?
Louisville Bowman Field is warmer than 56 of the 68 places with their own NOAA record in Kentucky, and wetter than 15. Across the 7,247 U.S. stations with normals, its annual mean of 57.8°F is warmer than 69%.
In the Köppen classification computed from these normals, Louisville Bowman Field 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 Louisville Bowman Field share this climate record?
73 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.
- Jeffersontown, KY29,388 people · 5 mi E
- St. Matthews, KY17,806 people · 2 mi NE
- Lyndon, KY11,221 people · 5 mi NE
- Middletown, KY9,908 people · 8 mi E
- Douglass Hills, KY5,558 people · 6 mi E
- Hurstbourne, KY4,777 people · 4 mi E
- Prospect, KY4,696 people · 9 mi N
- Indian Hills, KY2,934 people · 4 mi N
- Graymoor-Devondale, KY2,810 people · 4 mi NE
- Anchorage, KY2,538 people · 7 mi NE
- Windy Hills, KY2,471 people · 3 mi NE
- Hurstbourne Acres, KY2,005 people · 4 mi E
- St. Regis Park, KY1,459 people · 3 mi E
- West Buechel, KY1,393 people · 2 mi S
- Beechwood Village, KY1,293 people · 3 mi NE
- Utica, IN1,254 people · 8 mi N
- Barbourmeade, KY1,237 people · 6 mi NE
- Watterson Park, KY1,027 people · 2 mi SW
- Northfield, KY1,014 people · 4 mi N
- Woodlawn Park, KY958 people · 3 mi NE
- Rolling Hills, KY947 people · 6 mi NE
- Bellemeade, KY923 people · 4 mi E
- Langdon Place, KY889 people · 6 mi NE
- Plantation, KY837 people · 5 mi NE
- Hollow Creek, KY812 people · 6 mi S
- Blue Ridge Manor, KY808 people · 5 mi E
- Woodland Hills, KY740 people · 7 mi E
- Meadow Vale, KY736 people · 6 mi NE
- Rolling Fields, KY731 people · 3 mi N
- Green Spring, KY726 people · 7 mi NE
- Strathmoor Village, KY690 people · 1 mi SW
- Spring Valley, KY687 people · 6 mi NE
- Seneca Gardens, KY678 people · 1 mi W
- Brownsboro Farm, KY651 people · 6 mi NE
- Glenview, KY604 people · 5 mi N
- Westwood, KY584 people · 6 mi NE
- Murray Hill, KY579 people · 6 mi NE
- Wellington, KY573 people · 1 mi SW
- Bancroft, KY514 people · 5 mi NE
- Houston Acres, KY503 people · 3 mi E
- Riverwood, KY499 people · 4 mi N
- Briarwood, KY454 people · 5 mi NE
- Forest Hills, KY444 people · 4 mi E
- Norbourne Estates, KY442 people · 2 mi NE
- Moorland, KY441 people · 5 mi NE
- Meadowview Estates, KY437 people · 2 mi E
- Richlawn, KY421 people · 2 mi NE
- Kingsley, KY400 people · 1 mi SW
- Norwood, KY384 people · 3 mi NE
- Glenview Hills, KY381 people · 5 mi N
- Old Brownsboro Place, KY380 people · 5 mi NE
- Strathmoor Manor, KY353 people · 1 mi SW
- Bellewood, KY346 people · 2 mi N
- Brownsboro Village, KY313 people · 2 mi N
- Creekside, KY310 people · 7 mi NE
- Goose Creek, KY304 people · 6 mi NE
- Druid Hills, KY302 people · 3 mi N
- Spring Mill, KY298 people · 6 mi S
- Wildwood, KY284 people · 5 mi E
- Broeck Pointe, KY250 people · 6 mi NE
- Manor Creek, KY244 people · 6 mi NE
- Crossgate, KY225 people · 4 mi NE
- Glenview Manor, KY209 people · 5 mi N
- Thornhill, KY187 people · 5 mi NE
- Mockingbird Valley, KY184 people · 3 mi N
- Maryhill Estates, KY181 people · 3 mi N
- Sycamore, KY171 people · 6 mi E
- Cambridge, KY164 people · 3 mi E
- Hills and Dales, KY145 people · 5 mi NE
- Lincolnshire, KY140 people · 2 mi E
- Hickory Hill, KY119 people · 7 mi NE
- Meadowbrook Farm, KY117 people · 6 mi NE
- Ten Broeck, KY96 people · 7 mi NE
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 Louisville Bowman Field's climate
What is the coldest month at Louisville Bowman Field?
January, with a normal high of 43°F and a normal low of 27°F. The warmest is July (88°F by day, 69°F at night).
Does it snow at Louisville Bowman Field?
Yes. NOAA publishes no 1991-2020 snowfall normal for the station; the nearest record that keeps one, Louisville (5 miles away), records 13 inches of snow in a normal year.
What is the rainiest month at Louisville Bowman Field?
May, with 5.16 in of precipitation in a normal year; the driest is February with 3.27 in.
What plant hardiness zone is Louisville Bowman Field in?
The USDA's 2023 map puts Louisville Bowman Field in zone 7a in ZIP code 40205, the nearest ZIP area. By the same method at the station, the coldest night of a typical year reaches 6°F (20 years, 1991-2020): zone 7b.
How late can frost come at Louisville Bowman Field?
In half of years the last 32°F night comes after April 3; in one year in ten it comes after April 19. Waiting until April 19 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Kentucky climateThe statewide normals and every place in the state
- Louisville, KY5 miles from this station, 58.9°F a year
- Louisville McAlpine, KY7 miles from this station, 58.0°F a year
- Crestwood, KY16 miles from this station, 55.2°F a year
- Bernheim Forest, KY22 miles from this station, 57.2°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made