Lexington, Missouri climate: Normal weather by month, frost dates and records
Lexington's normal year runs from 20°F January nights to 88°F July afternoons, with 43.3 inches of precipitation and 14 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 12.7°C, January lows of −7°C, July highs of 31°C, 1,099 mm of precipitation a year.
- NOAA stationLexington (3 mi E)
- Station IDUSC00234904
- Location39.18°N 93.86°W
- Elevation825 ft (252 m)
- Population4,595
On October 23, the normal high in Lexington is 66°F and the normal low 43°F, and the chance of measurable rain or snow is 23%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Lexington.
- Jan 38° 20°
- Feb 44° 23°
- Mar 55° 33°
- Apr 65° 44°
- May 75° 54°
- Jun 85° 64°
- Jul 88° 68°
- Aug 87° 66°
- Sep 80° 57°
- Oct 69° 45°
- Nov 54° 34°
- Dec 43° 25°
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 Lexington each month?
July is the warmest month, with normal highs of 88°F; January the coldest, with normal lows of 20°F. The most precipitation falls in May (5.58 in), the least in January (1.76 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 38°F | 20°F | 29.2°F | 1.76 | 4.7 | 6 | <1 | 28 | 9 h 40 min |
| February | 44°F | 23°F | 33.7°F | 1.99 | 3.2 | 5 | <1 | 23 | 10 h 40 min |
| March | 55°F | 33°F | 44.3°F | 3.11 | 0.8 | 7 | <1 | 18 | 11 h 50 min |
| April | 65°F | 44°F | 54.5°F | 4.42 | 0.2 | 10 | <1 | 5 | 13 h 10 min |
| May | 75°F | 54°F | 64.5°F | 5.58 | 0.0 | 11 | 1 | <1 | 14 h 20 min |
| June | 85°F | 64°F | 74.4°F | 5.10 | 0.0 | 9 | 6 | <1 | 14 h 50 min |
| July | 88°F | 68°F | 78.1°F | 5.14 | 0.0 | 8 | 13 | <1 | 14 h 40 min |
| August | 87°F | 66°F | 76.4°F | 4.32 | 0.0 | 7 | 14 | <1 | 13 h 50 min |
| September | 80°F | 57°F | 68.5°F | 4.36 | 0.0 | 7 | 4 | <1 | 12 h 30 min |
| October | 69°F | 45°F | 56.8°F | 3.20 | 0.0 | 7 | <1 | 3 | 11 h 10 min |
| November | 54°F | 34°F | 44.2°F | 2.43 | 0.8 | 6 | <1 | 15 | 10 h |
| December | 43°F | 25°F | 34.2°F | 1.86 | 4.1 | 6 | <1 | 26 | 9 h 30 min |
| Year (annual) | 65°F | 45°F | 54.9°F | 43.27 | 13.8 | 88 | 37 | 118 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 3°C | −7°C | −1.6°C | 45 mm | 12 cm |
| February | 7°C | −5°C | 0.9°C | 51 mm | 8 cm |
| March | 13°C | 1°C | 6.8°C | 79 mm | 2 cm |
| April | 19°C | 7°C | 12.5°C | 112 mm | 1 cm |
| May | 24°C | 12°C | 18.1°C | 142 mm | 0 cm |
| June | 29°C | 18°C | 23.6°C | 130 mm | 0 cm |
| July | 31°C | 20°C | 25.6°C | 131 mm | 0 cm |
| August | 31°C | 19°C | 24.7°C | 110 mm | 0 cm |
| September | 27°C | 14°C | 20.3°C | 111 mm | 0 cm |
| October | 20°C | 7°C | 13.8°C | 81 mm | 0 cm |
| November | 12°C | 1°C | 6.8°C | 62 mm | 2 cm |
| December | 6°C | −4°C | 1.2°C | 47 mm | 10 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00234904; 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 Lexington?
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 (7).
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 USC00234904.
When is the last frost in Lexington?
In Lexington, the last spring frost (32°F) comes after April 8 in half of years and after April 26 in one year in ten; the first autumn frost comes before October 25 in half of years and before October 10 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 81 year in 10 after April 26; 9 in 10 after March 24
- First autumn frost, half of years before
- October 251 year in 10 before October 10; 9 in 10 before November 7
NOAA puts the median frost-free season at 197 days, and the season without a hard freeze (28°F) at 219 days.
A hard freeze (28°F) comes after March 30 in half of springs and before November 3 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Lexington in zone 6a in ZIP code 64067, the nearest ZIP area.
Frost dates for every NOAA station in Missouri · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00234904; 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 Lexington?
In a normal year in Lexington, 37 days a year reach 90°F (2 of them 100°F or more), 118 nights fall to 32°F or colder and 88 days bring measurable precipitation.
- Days at 90°F or more
- 37a normal year
- Days at 100°F or more
- 2a normal year
- Nights at 32°F or colder
- 118a normal year
- Days that stay below freezing
- 24high of 32°F or less
- Days with 0.01 inch of precipitation
- 88a normal year
- Days with 1 inch of snow or more
- 5a normal year
The highest temperature in this station's record (since 1892) is 113°F, on July 15, 1936; the lowest is −26°F, on February 12, 1899.
The wettest calendar year on that record is 1961, with 58.12 in; the snowiest season is 1959–60, with 44.6 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00234904; records: ACIS (NOAA Regional Climate Centers), station USC00234904. Records use complete months only; a month missing more than three days is left out.
How sunny is Lexington?
Over a year 75% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Lexington, 4.2 kWh per square metre a day. July is the sunniest month (83%) and January the cloudiest (68%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 68% | 2.1 |
| February | 70% | 2.9 |
| March | 68% | 3.8 |
| April | 71% | 5.0 |
| May | 73% | 5.7 |
| June | 80% | 6.4 |
| July | 83% | 6.5 |
| August | 81% | 5.6 |
| September | 82% | 4.8 |
| October | 75% | 3.3 |
| November | 73% | 2.4 |
| December | 68% | 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 much heating and cooling does Lexington need?
A normal year in Lexington brings 4,995 heating degree days, 7% fewer than the median U.S. place (5,373), and 1,351 cooling degree days, 49% 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 4,029 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,110 | 0 |
| February | 876 | 0 |
| March | 643 | 3 |
| April | 333 | 19 |
| May | 107 | 92 |
| June | 8 | 289 |
| July | 0 | 406 |
| August | 2 | 354 |
| September | 54 | 159 |
| October | 283 | 27 |
| November | 624 | 2 |
| December | 955 | 0 |
| Year (annual) | 4,995 | 1,351 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00234904. 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 Lexington's climate compare?
Lexington is warmer than 58 of the other 133 places with their own NOAA record in Missouri, and wetter than 58. Across the 7,247 U.S. stations with normals, its annual mean of 54.9°F is warmer than 60%.
In the Köppen classification computed from these normals, Lexington is Dfa: continental, 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 Lexington share this climate record?
Hardin has no NOAA station with 1991-2020 normals of its 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.
- Hardin, MO554 people · 6 mi N
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 Lexington's climate
What is the coldest month in Lexington?
January, with a normal high of 38°F and a normal low of 20°F. The warmest is July (88°F by day, 68°F at night).
Does it snow in Lexington?
Yes: 14 inches in a normal year, falling on 7 days with 0.1 inch or more, the most in January (4.7 inches).
What is the rainiest month in Lexington?
May, with 5.58 in of precipitation in a normal year; the driest is January with 1.76 in.
What plant hardiness zone is Lexington in?
The USDA's 2023 map puts Lexington in zone 6a in ZIP code 64067, the nearest ZIP area.
How late can frost come in Lexington?
In half of years the last 32°F night comes after April 8; in one year in ten it comes after April 26. Waiting until April 26 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Missouri climateThe statewide normals and every place in the state
- Richmond, MO7 miles from this station, 52.6°F a year
- Higginsville, MO11 miles from this station, 53.6°F a year
- Waverly, MO17 miles from this station, 54.6°F a year
- Carrollton, MO23 miles from this station, 53.7°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made