Lexington, Michigan climate: Normal weather by month, frost dates and records
Lexington's normal year runs from 16°F January nights to 78°F July afternoons, with 35.4 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 8.1°C, January lows of −9°C, July highs of 26°C, 898 mm of precipitation a year.
- NOAA stationLexington Water Treatment Plant
- Station IDUSC00204808
- Location43.26°N 82.53°W
- Elevation622 ft (190 m)
- From the centerunder 1 mile
- Population923
On October 14, the normal high in Lexington is 60°F and the normal low 43°F, and the chance of measurable rain or snow is 44%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Lexington.
- Jan 30° 16°
- Feb 32° 16°
- Mar 40° 24°
- Apr 52° 34°
- May 63° 45°
- Jun 73° 55°
- Jul 78° 60°
- Aug 78° 60°
- Sep 72° 53°
- Oct 59° 42°
- Nov 47° 32°
- Dec 35° 23°
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 78°F; January the coldest, with normal lows of 16°F. The most precipitation falls in May (3.93 in), the least in February (2.00 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 30°F | 16°F | 23.0°F | 2.58 | 14 | <1 | 29 | 9 h 20 min |
| February | 32°F | 16°F | 24.1°F | 2.00 | 12 | <1 | 27 | 10 h 30 min |
| March | 40°F | 24°F | 32.0°F | 2.05 | 11 | <1 | 26 | 11 h 50 min |
| April | 52°F | 34°F | 42.6°F | 3.37 | 13 | <1 | 13 | 13 h 20 min |
| May | 63°F | 45°F | 53.8°F | 3.93 | 13 | <1 | 1 | 14 h 40 min |
| June | 73°F | 55°F | 63.9°F | 3.70 | 11 | 1 | <1 | 15 h 20 min |
| July | 78°F | 60°F | 69.2°F | 3.20 | 10 | 3 | <1 | 15 h 10 min |
| August | 78°F | 60°F | 68.6°F | 3.10 | 10 | 1 | <1 | 14 h |
| September | 72°F | 53°F | 62.3°F | 3.30 | 11 | 1 | <1 | 12 h 30 min |
| October | 59°F | 42°F | 50.6°F | 3.33 | 14 | <1 | 3 | 11 h 10 min |
| November | 47°F | 32°F | 39.2°F | 2.51 | 12 | <1 | 16 | 9 h 40 min |
| December | 35°F | 23°F | 29.2°F | 2.28 | 13 | <1 | 26 | 9 h |
| Year (annual) | 55°F | 38°F | 46.5°F | 35.35 | 144 | 6 | 140 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | −1°C | −9°C | −5.0°C | 66 mm |
| February | 0°C | −9°C | −4.4°C | 51 mm |
| March | 5°C | −5°C | 0.0°C | 52 mm |
| April | 11°C | 1°C | 5.9°C | 86 mm |
| May | 17°C | 7°C | 12.1°C | 100 mm |
| June | 23°C | 13°C | 17.7°C | 94 mm |
| July | 26°C | 16°C | 20.7°C | 81 mm |
| August | 25°C | 15°C | 20.3°C | 79 mm |
| September | 22°C | 12°C | 16.8°C | 84 mm |
| October | 15°C | 6°C | 10.3°C | 85 mm |
| November | 8°C | 0°C | 4.0°C | 64 mm |
| December | 2°C | −5°C | −1.6°C | 58 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Yale (16 miles away), gets 41 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00204808; 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 June, July, August and September. Of those, August has the fewest days with rain (10).
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 USC00204808.
When is the last frost in Lexington?
In Lexington, the last spring frost (32°F) comes after May 4 in half of years and after May 20 in one year in ten; the first autumn frost comes before October 24 in half of years and before October 7 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
- May 41 year in 10 after May 20; 9 in 10 after April 20
- First autumn frost, half of years before
- October 241 year in 10 before October 7; 9 in 10 before November 5
NOAA puts the median frost-free season at 171 days, and the season without a hard freeze (28°F) at 195 days.
A hard freeze (28°F) comes after April 22 in half of springs and before November 4 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Lexington in zone 6a in ZIP code 48450, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Lexington's NOAA station is in zone 6a: the coldest night of a typical year reaches −5°F (17 complete years).
Frost dates for every NOAA station in Michigan · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00204808; 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 in Lexington?
In a normal year in Lexington, 6 days a year reach 90°F, 140 nights fall to 32°F or colder and 144 days bring measurable precipitation.
- Days at 90°F or more
- 6a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 140a normal year
- Days that stay below freezing
- 55high of 32°F or less
- Days with 0.01 inch of precipitation
- 144a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USC00204808.
How sunny is Lexington?
Over a year 69% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Lexington, 3.6 kWh per square metre a day. July is the sunniest month (79%) and December the cloudiest (48%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 50% | 1.3 |
| February | 54% | 2.0 |
| March | 63% | 3.3 |
| April | 68% | 4.5 |
| May | 70% | 5.3 |
| June | 76% | 6.0 |
| July | 79% | 6.0 |
| August | 78% | 5.2 |
| September | 76% | 4.1 |
| October | 65% | 2.5 |
| November | 57% | 1.6 |
| December | 48% | 1.0 |
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 7,128 heating degree days, 33% more than the median U.S. place (5,373), and 435 cooling degree days, 52% fewer than the median (908). Eight months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 2,300 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,302 | 0 |
| February | 1,145 | 0 |
| March | 1,023 | 0 |
| April | 671 | 1 |
| May | 362 | 16 |
| June | 110 | 76 |
| July | 25 | 153 |
| August | 23 | 133 |
| September | 132 | 51 |
| October | 453 | 5 |
| November | 773 | 0 |
| December | 1,110 | 0 |
| Year (annual) | 7,128 | 435 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00204808. 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 Lexington been warmer than normal lately?
2024 averaged 50.1°F, 3.6°F above the 1991-2020 normal of 46.5°F. 2 of the 2 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 49.0°F | +2.5°F | 31.14 |
| 2024 | 50.1°F | +3.6°F | 31.23 |
Source: observed years: ACIS, station USC00204808. A year counts only with all twelve months complete.
How does Lexington's climate compare?
Lexington is warmer than 64 of the other 139 places with their own NOAA record in Michigan, and wetter than 87. Across the 7,247 U.S. stations with normals, its annual mean of 46.5°F is warmer than 25%.
In the Köppen classification computed from these normals, Lexington is Dfb: continental, no dry season, warm 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?
3 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.
- Croswell, MI2,289 people · 4 mi W
- Port Sanilac, MI563 people · 11 mi N
- Applegate, MI226 people · 9 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 Lexington's climate
What is the coldest month in Lexington?
January, with a normal high of 30°F and a normal low of 16°F. The warmest is July (78°F by day, 60°F at night).
Does it snow in Lexington?
Yes. NOAA publishes no 1991-2020 snowfall normal for Lexington's NOAA station; the nearest record that keeps one, Yale (16 miles away), records 41 inches of snow in a normal year.
What is the rainiest month in Lexington?
May, with 3.93 in of precipitation in a normal year; the driest is February with 2.00 in.
What plant hardiness zone is Lexington in?
The USDA's 2023 map puts Lexington in zone 6a in ZIP code 48450, the nearest ZIP area. By the same method at Lexington's NOAA station, the coldest night of a typical year reaches −5°F (17 years, 1991-2020): zone 6a.
How late can frost come in Lexington?
In half of years the last 32°F night comes after May 4; in one year in ten it comes after May 20. Waiting until May 20 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Michigan climateThe statewide normals and every place in the state
- Yale, MI16 miles from this station, 45.4°F a year
- Sandusky, MI18 miles from this station, 46.4°F a year
- Port Huron, MI21 miles from this station, 49.5°F a year
- Richmond, MI30 miles from this station, 48.1°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made