Milan, Michigan climate: Normal weather by month, frost dates and records
Milan's normal year runs from 17°F January nights to 84°F July afternoons, with 35.9 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 9.6°C, January lows of −8°C, July highs of 29°C, 912 mm of precipitation a year.
- NOAA stationMilan Wastewater Treatment Plant
- Station IDUSC00205451
- Location42.08°N 83.68°W
- Elevation680 ft (207 m)
- From the centerunder 1 mile
- Population6,048
On October 22, the normal high in Milan is 59°F and the normal low 39°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Milan.
- Jan 32° 17°
- Feb 34° 18°
- Mar 45° 26°
- Apr 58° 37°
- May 70° 49°
- Jun 79° 58°
- Jul 84° 63°
- Aug 81° 61°
- Sep 75° 53°
- Oct 62° 41°
- Nov 48° 32°
- Dec 36° 24°
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 Milan each month?
July is the warmest month, with normal highs of 84°F; January the coldest, with normal lows of 17°F. The most precipitation falls in May (3.88 in), the least in February (2.13 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 32°F | 17°F | 24.3°F | 2.88 | – | <1 | 28 | 9 h 30 min |
| February | 34°F | 18°F | 26.2°F | 2.13 | – | <1 | 26 | 10 h 30 min |
| March | 45°F | 26°F | 35.3°F | 2.23 | – | <1 | 24 | 11 h 50 min |
| April | 58°F | 37°F | 47.4°F | 3.40 | – | <1 | 9 | 13 h 20 min |
| May | 70°F | 49°F | 59.3°F | 3.88 | – | <1 | 1 | 14 h 30 min |
| June | 79°F | 58°F | 68.8°F | 3.43 | – | 3 | <1 | 15 h 10 min |
| July | 84°F | 63°F | 73.1°F | 3.58 | – | 6 | <1 | 15 h |
| August | 81°F | 61°F | 70.8°F | 3.49 | – | 2 | <1 | 14 h |
| September | 75°F | 53°F | 63.5°F | 3.15 | – | 1 | <1 | 12 h 30 min |
| October | 62°F | 41°F | 51.7°F | 2.82 | – | <1 | 5 | 11 h 10 min |
| November | 48°F | 32°F | 39.9°F | 2.74 | – | <1 | 17 | 9 h 50 min |
| December | 36°F | 24°F | 30.1°F | 2.17 | – | <1 | 27 | 9 h 10 min |
| Year (annual) | 59°F | 40°F | 49.2°F | 35.90 | – | 12 | 137 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 0°C | −8°C | −4.3°C | 73 mm |
| February | 1°C | −8°C | −3.2°C | 54 mm |
| March | 7°C | −3°C | 1.8°C | 57 mm |
| April | 15°C | 3°C | 8.6°C | 86 mm |
| May | 21°C | 9°C | 15.2°C | 99 mm |
| June | 26°C | 15°C | 20.4°C | 87 mm |
| July | 29°C | 17°C | 22.8°C | 91 mm |
| August | 27°C | 16°C | 21.6°C | 89 mm |
| September | 24°C | 11°C | 17.5°C | 80 mm |
| October | 17°C | 5°C | 10.9°C | 72 mm |
| November | 9°C | 0°C | 4.4°C | 70 mm |
| December | 2°C | −5°C | −1.1°C | 55 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Dundee (9 miles away), gets 39 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00205451; 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 Milan?
Normal highs sit between 65°F and 85°F in May, June, July, August and September.
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 USC00205451.
When is the last frost in Milan?
In Milan, the last spring frost (32°F) comes after April 26 in half of years and after May 9 in one year in ten; the first autumn frost comes before October 19 in half of years and before October 2 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 261 year in 10 after May 9; 9 in 10 after April 13
- First autumn frost, half of years before
- October 191 year in 10 before October 2; 9 in 10 before November 3
NOAA puts the median frost-free season at 175 days, and the season without a hard freeze (28°F) at 198 days.
A hard freeze (28°F) comes after April 15 in half of springs and before November 1 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Milan in zone 6a in ZIP code 48160, the nearest ZIP area.
Frost dates for every NOAA station in Michigan · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00205451; 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 Milan?
In a normal year in Milan, 12 days a year reach 90°F and 137 nights fall to 32°F or colder.
- Days at 90°F or more
- 12a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 137a normal year
- Days that stay below freezing
- 46high of 32°F or less
Source: NOAA NCEI 1991-2020 annual normals, station USC00205451.
How sunny is Milan?
Over a year 71% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Milan, 3.8 kWh per square metre a day. July is the sunniest month (80%) and December the cloudiest (54%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 59% | 1.6 |
| February | 62% | 2.4 |
| March | 66% | 3.5 |
| April | 68% | 4.7 |
| May | 70% | 5.5 |
| June | 76% | 6.2 |
| July | 80% | 6.2 |
| August | 78% | 5.3 |
| September | 77% | 4.3 |
| October | 68% | 2.8 |
| November | 63% | 1.8 |
| December | 54% | 1.2 |
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 Milan need?
A normal year in Milan brings 6,431 heating degree days, 20% more than the median U.S. place (5,373), and 716 cooling degree days, 21% fewer than the median (908). Seven months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 2,886 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,261 | 0 |
| February | 1,085 | 0 |
| March | 921 | 1 |
| April | 531 | 3 |
| May | 217 | 39 |
| June | 36 | 151 |
| July | 4 | 255 |
| August | 10 | 192 |
| September | 113 | 68 |
| October | 419 | 8 |
| November | 752 | 0 |
| December | 1,082 | 0 |
| Year (annual) | 6,431 | 716 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00205451. 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 Milan's climate compare?
Milan is warmer than 122 of the other 139 places with their own NOAA record in Michigan, and wetter than 93. Across the 7,247 U.S. stations with normals, its annual mean of 49.2°F is warmer than 37%.
In the Köppen classification computed from these normals, Milan 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.
What do Milan's other NOAA stations record?
One more NOAA station keeps 1991-2020 normals in or near Milan. This page uses Milan Wastewater Treatment Plant; the other differs by site and elevation:
| Station | From the center | Elevation | Year | Jan low | Jul high | Precip. | Snow | Last frost |
|---|---|---|---|---|---|---|---|---|
| Milan (4 mi ESE) USC00205450 | 4 mi E | 670 ft | 49.2°F | 16°F | 83°F | – | – | May 3 |
Source: NOAA NCEI 1991-2020 normals for each station. Last frost: the median last spring date of 32°F.
Questions about Milan's climate
What is the coldest month in Milan?
January, with a normal high of 32°F and a normal low of 17°F. The warmest is July (84°F by day, 63°F at night).
Does it snow in Milan?
Yes. NOAA publishes no 1991-2020 snowfall normal for Milan's NOAA station; the nearest record that keeps one, Dundee (9 miles away), records 39 inches of snow in a normal year.
What is the rainiest month in Milan?
May, with 3.88 in of precipitation in a normal year; the driest is February with 2.13 in.
What plant hardiness zone is Milan in?
The USDA's 2023 map puts Milan in zone 6a in ZIP code 48160, the nearest ZIP area.
How late can frost come in Milan?
In half of years the last 32°F night comes after April 26; in one year in ten it comes after May 9. Waiting until May 9 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Michigan climateThe statewide normals and every place in the state
- Saline, MI7 miles from this station, 48.2°F a year
- Dundee, MI9 miles from this station, 49.4°F a year
- Ann Arbor, MI11 miles from this station, 47.8°F a year
- Ann Arbor SE, MI11 miles from this station, 48.2°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made