Warsaw, Kentucky climate: Normal weather by month, frost dates and records
Warsaw's normal year runs from 23°F January nights to 86°F July afternoons, with 47.8 inches of precipitation and 7 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 12.9°C, January lows of −5°C, July highs of 30°C, 1,215 mm of precipitation a year.
- NOAA stationWarsaw Markland Dam
- Station IDUSC00158446
- Location38.77°N 84.97°W
- Elevation451 ft (138 m)
- Population1,758
On October 14, the normal high in Warsaw is 69°F and the normal low 46°F, and the chance of measurable rain or snow is 27%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Warsaw.
- Jan 42° 23°
- Feb 46° 26°
- Mar 56° 33°
- Apr 67° 42°
- May 76° 53°
- Jun 83° 62°
- Jul 86° 66°
- Aug 86° 65°
- Sep 80° 57°
- Oct 69° 45°
- Nov 56° 34°
- Dec 46° 28°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Warsaw each month?
July is the warmest month, with normal highs of 86°F; January the coldest, with normal lows of 23°F. The most precipitation falls in May (5.28 in), the least in January (3.18 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 42°F | 23°F | 32.8°F | 3.18 | 1.5 | 11 | <1 | 25 | 9 h 40 min |
| February | 46°F | 26°F | 35.9°F | 3.46 | 2.8 | 10 | <1 | 22 | 10 h 40 min |
| March | 56°F | 33°F | 44.1°F | 4.22 | 0.7 | 11 | <1 | 17 | 11 h 50 min |
| April | 67°F | 42°F | 54.9°F | 4.85 | 0.0 | 13 | <1 | 5 | 13 h 10 min |
| May | 76°F | 53°F | 64.2°F | 5.28 | 0.0 | 12 | 1 | <1 | 14 h 20 min |
| June | 83°F | 62°F | 72.3°F | 4.88 | 0.0 | 10 | 5 | <1 | 14 h 50 min |
| July | 86°F | 66°F | 76.1°F | 4.39 | 0.0 | 10 | 9 | <1 | 14 h 40 min |
| August | 86°F | 65°F | 75.1°F | 3.48 | 0.0 | 7 | 8 | <1 | 13 h 40 min |
| September | 80°F | 57°F | 68.3°F | 3.30 | 0.0 | 8 | 3 | <1 | 12 h 30 min |
| October | 69°F | 45°F | 56.8°F | 3.39 | 0.0 | 8 | <1 | 2 | 11 h 20 min |
| November | 56°F | 34°F | 45.1°F | 3.52 | 0.0 | 9 | <1 | 15 | 10 h 10 min |
| December | 46°F | 28°F | 36.9°F | 3.89 | 1.5 | 11 | <1 | 23 | 9 h 30 min |
| Year (annual) | 66°F | 44°F | 55.2°F | 47.84 | 6.5 | 120 | 26 | 110 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 6°C | −5°C | 0.4°C | 81 mm | 4 cm |
| February | 8°C | −4°C | 2.2°C | 88 mm | 7 cm |
| March | 13°C | 0°C | 6.7°C | 107 mm | 2 cm |
| April | 20°C | 6°C | 12.7°C | 123 mm | 0 cm |
| May | 24°C | 12°C | 17.9°C | 134 mm | 0 cm |
| June | 28°C | 16°C | 22.4°C | 124 mm | 0 cm |
| July | 30°C | 19°C | 24.5°C | 112 mm | 0 cm |
| August | 30°C | 18°C | 23.9°C | 88 mm | 0 cm |
| September | 27°C | 14°C | 20.2°C | 84 mm | 0 cm |
| October | 20°C | 7°C | 13.8°C | 86 mm | 0 cm |
| November | 13°C | 1°C | 7.3°C | 89 mm | 0 cm |
| December | 8°C | −2°C | 2.7°C | 99 mm | 4 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00158446; 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.
When is the best weather to visit Warsaw?
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 (8).
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 USC00158446.
When is the last frost in Warsaw?
In Warsaw, the last spring frost (32°F) comes after April 17 in half of years and after May 4 in one year in ten; the first autumn frost comes before October 29 in half of years and before October 15 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 171 year in 10 after May 4; 9 in 10 after April 2
- First autumn frost, half of years before
- October 291 year in 10 before October 15; 9 in 10 before November 10
NOAA puts the median frost-free season at 194 days, and the season without a hard freeze (28°F) at 217 days.
A hard freeze (28°F) comes after April 4 in half of springs and before November 7 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Warsaw in zone 6b in ZIP code 47020, 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 USC00158446; 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 in Warsaw?
In a normal year in Warsaw, 26 days a year reach 90°F, 110 nights fall to 32°F or colder and 120 days bring measurable precipitation.
- Days at 90°F or more
- 26a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 110a normal year
- Days that stay below freezing
- 13high of 32°F or less
- Days with 0.01 inch of precipitation
- 120a normal year
- Days with 1 inch of snow or more
- 4a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USC00158446.
How sunny is Warsaw?
Over a year 73% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Warsaw, 4.1 kWh per square metre a day. August is the sunniest month (81%) and December the cloudiest (60%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 61% | 1.9 |
| February | 62% | 2.6 |
| March | 65% | 3.7 |
| April | 72% | 5.0 |
| May | 72% | 5.5 |
| June | 79% | 6.3 |
| July | 79% | 6.0 |
| August | 81% | 5.6 |
| September | 79% | 4.6 |
| October | 73% | 3.3 |
| November | 70% | 2.4 |
| December | 60% | 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 much heating and cooling does Warsaw need?
A normal year in Warsaw brings 4,695 heating degree days, 13% fewer than the median U.S. place (5,373), and 1,155 cooling degree days, 27% more than the median (908). Six months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 3,803 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 999 | 0 |
| February | 815 | 0 |
| March | 651 | 3 |
| April | 318 | 13 |
| May | 109 | 84 |
| June | 11 | 230 |
| July | 1 | 345 |
| August | 2 | 313 |
| September | 45 | 143 |
| October | 278 | 23 |
| November | 598 | 1 |
| December | 871 | 0 |
| Year (annual) | 4,695 | 1,155 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00158446. 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.
Has Warsaw been warmer than normal lately?
2025 averaged 55.2°F, equal to the 1991-2020 normal of 55.2°F. 0 of the 2 complete years since 2022 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2022 | 54.9°F | −0.3°F | 43.10 | – |
| 2025 | 55.2°F | at normal | 46.98 | – |
Source: observed years: ACIS, station USC00158446. A year counts only with all twelve months complete.
How does Warsaw's climate compare?
Warsaw is warmer than 17 of the other 67 places with their own NOAA record in Kentucky, and wetter than 12. Across the 7,247 U.S. stations with normals, its annual mean of 55.2°F is warmer than 61%.
In the Köppen classification computed from these normals, Warsaw 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 Warsaw 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.
- Dillsboro, IN1,387 people · 17 mi N
- Canaan, IN205 people · 19 mi W
- Lamb, IN193 people · 14 mi SW
- East Enterprise, IN179 people · 7 mi N
- Brooksburg, IN70 people · 15 mi W
- Cross Plains, IN44 people · 17 mi NW
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 Warsaw's climate
What is the coldest month in Warsaw?
January, with a normal high of 42°F and a normal low of 23°F. The warmest is July (86°F by day, 66°F at night).
Does it snow in Warsaw?
Yes: 7 inches in a normal year, falling on 5 days with 0.1 inch or more, the most in February (2.8 inches).
What is the rainiest month in Warsaw?
May, with 5.28 in of precipitation in a normal year; the driest is January with 3.18 in.
What plant hardiness zone is Warsaw in?
The USDA's 2023 map puts Warsaw in zone 6b in ZIP code 47020, the nearest ZIP area.
How late can frost come in Warsaw?
In half of years the last 32°F night comes after April 17; in one year in ten it comes after May 4. Waiting until May 4 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Kentucky climateThe statewide normals and every place in the state
- Glencoe, KY4 miles from this station, 53.0°F a year
- Vevay, IN6 miles from this station, 56.6°F a year
- Madison, IN23 miles from this station, 56.0°F a year
- Williamstown, KY24 miles from this station, 56.4°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made