Milan, Indiana climate: Normal weather by month, frost dates and records
Milan's normal year runs from 19°F January nights to 83°F July afternoons. (NOAA 1991-2020 normals)
In metric: a yearly mean of 10.7°C, January lows of −7°C, July highs of 28°C.
- NOAA stationMilan (5 mi NE)
- Station IDUSC00125658
- Location39.16°N 85.05°W
- Elevation975 ft (297 m)
- From the center4 miles
- Population1,831
On October 23, the normal high in Milan is 62°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 37° 19°
- Feb 41° 22°
- Mar 51° 30°
- Apr 62° 39°
- May 72° 50°
- Jun 79° 59°
- Jul 83° 62°
- Aug 82° 60°
- Sep 76° 53°
- Oct 65° 41°
- Nov 52° 32°
- Dec 41° 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 83°F; January the coldest, with normal lows of 19°F.
| Month | High | Low | Mean | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|
| January | 37°F | 19°F | 28.0°F | – | <1 | 27 | 9 h 40 min |
| February | 41°F | 22°F | 31.2°F | – | <1 | 23 | 10 h 40 min |
| March | 51°F | 30°F | 40.2°F | – | <1 | 21 | 11 h 50 min |
| April | 62°F | 39°F | 50.9°F | – | <1 | 8 | 13 h 10 min |
| May | 72°F | 50°F | 60.9°F | – | <1 | 1 | 14 h 20 min |
| June | 79°F | 59°F | 68.7°F | – | 1 | <1 | 14 h 50 min |
| July | 83°F | 62°F | 72.3°F | – | 3 | <1 | 14 h 40 min |
| August | 82°F | 60°F | 70.7°F | – | 2 | <1 | 13 h 40 min |
| September | 76°F | 53°F | 64.7°F | – | 1 | <1 | 12 h 30 min |
| October | 65°F | 41°F | 53.3°F | – | <1 | 7 | 11 h 10 min |
| November | 52°F | 32°F | 41.9°F | – | <1 | 17 | 10 h |
| December | 41°F | 24°F | 32.4°F | – | <1 | 24 | 9 h 30 min |
| Year (annual) | 62°F | 41°F | 51.3°F | – | 7 | 128 |
The same normals in °C and millimetres
| Month | High | Low | Mean |
|---|---|---|---|
| January | 3°C | −7°C | −2.2°C |
| February | 5°C | −6°C | −0.4°C |
| March | 11°C | −1°C | 4.6°C |
| April | 17°C | 4°C | 10.5°C |
| May | 22°C | 10°C | 16.1°C |
| June | 26°C | 15°C | 20.4°C |
| July | 28°C | 16°C | 22.4°C |
| August | 28°C | 15°C | 21.5°C |
| September | 25°C | 12°C | 18.2°C |
| October | 19°C | 5°C | 11.8°C |
| November | 11°C | 0°C | 5.5°C |
| December | 5°C | −4°C | 0.2°C |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Brookville (18 miles away), gets 18 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00125658; 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, September and October.
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 USC00125658.
When is the last frost in Milan?
In Milan, the last spring frost (32°F) comes after April 30 in half of years and after May 15 in one year in ten; the first autumn frost comes before October 16 in half of years and before October 3 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 301 year in 10 after May 15; 9 in 10 after April 14
- First autumn frost, half of years before
- October 161 year in 10 before October 3; 9 in 10 before October 29
NOAA puts the median frost-free season at 168 days, and the season without a hard freeze (28°F) at 191 days.
A hard freeze (28°F) comes after April 17 in half of springs and before October 26 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Milan in zone 6b in ZIP code 47031, the nearest ZIP area.
Frost dates for every NOAA station in Indiana · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00125658; 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, 7 days a year reach 90°F and 128 nights fall to 32°F or colder.
- Days at 90°F or more
- 7a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 128a normal year
- Days that stay below freezing
- 31high of 32°F or less
Source: NOAA NCEI 1991-2020 annual normals, station USC00125658.
How sunny is Milan?
Over a year 73% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Milan, 4.0 kWh per square metre a day. August is the sunniest month (81%) and December the cloudiest (58%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 60% | 1.8 |
| February | 62% | 2.6 |
| March | 66% | 3.6 |
| April | 71% | 4.9 |
| May | 72% | 5.5 |
| June | 79% | 6.2 |
| July | 80% | 6.1 |
| August | 81% | 5.6 |
| September | 79% | 4.5 |
| October | 73% | 3.2 |
| November | 69% | 2.2 |
| December | 58% | 1.5 |
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 5,679 heating degree days, 6% more than the median U.S. place (5,373), and 711 cooling degree days, 22% 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 3,075 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,147 | 0 |
| February | 946 | 0 |
| March | 770 | 1 |
| April | 431 | 8 |
| May | 174 | 48 |
| June | 34 | 146 |
| July | 4 | 229 |
| August | 10 | 186 |
| September | 90 | 82 |
| October | 372 | 10 |
| November | 692 | 0 |
| December | 1,009 | 0 |
| Year (annual) | 5,679 | 711 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00125658. 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 44 of the other 98 places with their own NOAA record in Indiana. Across the 7,247 U.S. stations with normals, its annual mean of 51.3°F is warmer than 46%.
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers.
Which places near Milan share this climate record?
13 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.
- Harrison, OH13,526 people · 16 mi NE
- Batesville, IN7,353 people · 13 mi NW
- Versailles, IN2,188 people · 13 mi SW
- Osgood, IN1,590 people · 13 mi W
- Sunman, IN932 people · 6 mi NW
- Moores Hill, IN696 people · 4 mi SW
- Morris, IN641 people · 11 mi NW
- Delaware, IN438 people · 8 mi W
- Elizabethtown, OH267 people · 13 mi E
- Pierceville, IN108 people · 7 mi W
- Manchester, IN84 people · 2 mi E
- Elrod, IN11 people · 9 mi SW
- Penntown, IN0 people · 8 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 Milan's climate
What is the coldest month in Milan?
January, with a normal high of 37°F and a normal low of 19°F. The warmest is July (83°F by day, 62°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, Brookville (18 miles away), records 18 inches of snow in a normal year.
What plant hardiness zone is Milan in?
The USDA's 2023 map puts Milan in zone 6b in ZIP code 47031, the nearest ZIP area.
How late can frost come in Milan?
In half of years the last 32°F night comes after April 30; in one year in ten it comes after May 15. Waiting until May 15 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Indiana climateThe statewide normals and every place in the state
- Brookville, IN18 miles from this station, 53.5°F a year
- Cincinnati-Fernbank, OH19 miles from this station, 55.0°F a year
- Mack, OH20 miles from this station, 53.6°F a year
- Cincinnati, OH22 miles from this station, 54.7°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made