Winchester, Indiana climate: Normal weather by month, frost dates and records
Winchester's normal year runs from 18°F January nights to 83°F July afternoons, with 40.1 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 10.4°C, January lows of −8°C, July highs of 28°C, 1,018 mm of precipitation a year.
- NOAA stationWinchester Airport (3 mi E)
- Station IDUSC00129678
- Location40.17°N 84.92°W
- Elevation1,110 ft (338 m)
- From the center3 miles
- Population4,800
On October 14, the normal high in Winchester is 65°F and the normal low 44°F, and the chance of measurable rain or snow is 29%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Winchester.
- Jan 33° 18°
- Feb 37° 20°
- Mar 48° 29°
- Apr 61° 40°
- May 71° 52°
- Jun 79° 61°
- Jul 83° 64°
- Aug 81° 61°
- Sep 76° 54°
- Oct 64° 43°
- Nov 50° 32°
- Dec 38° 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 Winchester each month?
July is the warmest month, with normal highs of 83°F; January the coldest, with normal lows of 18°F. The most precipitation falls in June (4.84 in), the least in February (2.09 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 33°F | 18°F | 25.5°F | 2.73 | 10 | <1 | 27 | 9 h 40 min |
| February | 37°F | 20°F | 28.3°F | 2.09 | 9 | <1 | 25 | 10 h 40 min |
| March | 48°F | 29°F | 38.5°F | 2.91 | 11 | <1 | 20 | 11 h 50 min |
| April | 61°F | 40°F | 50.4°F | 3.99 | 13 | <1 | 6 | 13 h 10 min |
| May | 71°F | 52°F | 61.5°F | 4.39 | 13 | <1 | <1 | 14 h 20 min |
| June | 79°F | 61°F | 70.1°F | 4.84 | 12 | 2 | <1 | 15 h |
| July | 83°F | 64°F | 73.2°F | 3.94 | 10 | 4 | <1 | 14 h 50 min |
| August | 81°F | 61°F | 71.2°F | 3.51 | 9 | 2 | <1 | 13 h 50 min |
| September | 76°F | 54°F | 65.0°F | 3.04 | 8 | 1 | <1 | 12 h 30 min |
| October | 64°F | 43°F | 53.4°F | 3.13 | 9 | <1 | 4 | 11 h 10 min |
| November | 50°F | 32°F | 41.0°F | 3.22 | 10 | <1 | 16 | 10 h |
| December | 38°F | 24°F | 30.9°F | 2.27 | 11 | <1 | 26 | 9 h 20 min |
| Year (annual) | 60°F | 41°F | 50.8°F | 40.06 | 124 | 9 | 124 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 1°C | −8°C | −3.6°C | 69 mm |
| February | 3°C | −7°C | −2.1°C | 53 mm |
| March | 9°C | −2°C | 3.6°C | 74 mm |
| April | 16°C | 5°C | 10.2°C | 101 mm |
| May | 22°C | 11°C | 16.4°C | 112 mm |
| June | 26°C | 16°C | 21.2°C | 123 mm |
| July | 28°C | 18°C | 22.9°C | 100 mm |
| August | 27°C | 16°C | 21.8°C | 89 mm |
| September | 24°C | 12°C | 18.3°C | 77 mm |
| October | 18°C | 6°C | 11.9°C | 80 mm |
| November | 10°C | 0°C | 5.0°C | 82 mm |
| December | 3°C | −5°C | −0.6°C | 58 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Farmland (13 miles away), gets 21 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00129678; 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 Winchester?
Normal highs sit between 65°F and 85°F in May, June, July, August and September. 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 USC00129678.
When is the last frost in Winchester?
In Winchester, the last spring frost (32°F) comes after April 20 in half of years and after May 5 in one year in ten; the first autumn frost comes before October 21 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
- April 201 year in 10 after May 5; 9 in 10 after April 6
- First autumn frost, half of years before
- October 211 year in 10 before October 7; 9 in 10 before November 1
NOAA puts the median frost-free season at 183 days, and the season without a hard freeze (28°F) at 204 days.
A hard freeze (28°F) comes after April 9 in half of springs and before November 1 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Winchester in zone 6a in ZIP code 47394, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Winchester's NOAA station is in zone 6a: the coldest night of a typical year reaches −7°F (17 complete years).
Frost dates for every NOAA station in Indiana · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00129678; 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 Winchester?
In a normal year in Winchester, 9 days a year reach 90°F, 124 nights fall to 32°F or colder and 124 days bring measurable precipitation.
- Days at 90°F or more
- 9a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 124a normal year
- Days that stay below freezing
- 42high of 32°F or less
- Days with 0.01 inch of precipitation
- 124a normal year
The highest temperature in this station's record (since 1942) is 102°F, on September 3, 1953; the lowest is −26°F, on January 20, 1994.
The wettest calendar year on that record is 1950, with 64.19 in; the snowiest season is 1950–51, with 60.0 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00129678; records: ACIS (NOAA Regional Climate Centers), station USC00129678. Records use complete months only; a month missing more than three days is left out.
How sunny is Winchester?
Over a year 72% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Winchester, 3.9 kWh per square metre a day. August is the sunniest month (81%) and December the cloudiest (57%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 58% | 1.7 |
| February | 63% | 2.6 |
| March | 65% | 3.6 |
| April | 69% | 4.8 |
| May | 72% | 5.5 |
| June | 77% | 6.2 |
| July | 80% | 6.2 |
| August | 81% | 5.6 |
| September | 78% | 4.5 |
| October | 70% | 3.0 |
| November | 67% | 2.1 |
| December | 57% | 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 Winchester need?
A normal year in Winchester brings 5,983 heating degree days, 11% more than the median U.S. place (5,373), and 830 cooling degree days, 9% 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 3,183 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,224 | 0 |
| February | 1,027 | 0 |
| March | 822 | 1 |
| April | 447 | 9 |
| May | 175 | 66 |
| June | 31 | 184 |
| July | 4 | 258 |
| August | 11 | 203 |
| September | 93 | 94 |
| October | 372 | 14 |
| November | 719 | 1 |
| December | 1,057 | 0 |
| Year (annual) | 5,983 | 830 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00129678. 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 Winchester's climate compare?
Winchester is warmer than 34 of the other 98 places with their own NOAA record in Indiana, and wetter than 19. Across the 7,247 U.S. stations with normals, its annual mean of 50.8°F is warmer than 44%.
In the Köppen classification computed from these normals, Winchester 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 Winchester share this climate record?
9 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.
- Union City, OH1,564 people · 7 mi E
- Ansonia, OH1,149 people · 15 mi E
- Osgood, OH300 people · 25 mi NE
- Saratoga, IN230 people · 5 mi N
- North Star, OH227 people · 21 mi NE
- Palestine, OH179 people · 13 mi SE
- Rossburg, OH159 people · 17 mi NE
- New Weston, OH124 people · 19 mi NE
- Yorkshire, OH104 people · 25 mi NE
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 Winchester's climate
What is the coldest month in Winchester?
January, with a normal high of 33°F and a normal low of 18°F. The warmest is July (83°F by day, 64°F at night).
Does it snow in Winchester?
Yes. NOAA publishes no 1991-2020 snowfall normal for Winchester's NOAA station; the nearest record that keeps one, Farmland (13 miles away), records 21 inches of snow in a normal year.
What is the rainiest month in Winchester?
June, with 4.84 in of precipitation in a normal year; the driest is February with 2.09 in.
What plant hardiness zone is Winchester in?
The USDA's 2023 map puts Winchester in zone 6a in ZIP code 47394, the nearest ZIP area. By the same method at Winchester's NOAA station, the coldest night of a typical year reaches −7°F (17 years, 1991-2020): zone 6a.
How late can frost come in Winchester?
In half of years the last 32°F night comes after April 20; in one year in ten it comes after May 5. Waiting until May 5 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Indiana climateThe statewide normals and every place in the state
- Farmland, IN13 miles from this station, 51.2°F a year
- Greenville, OH15 miles from this station, 51.9°F a year
- Portland, IN17 miles from this station, 50.3°F a year
- Richmond, IN22 miles from this station, 52.3°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made