Winamac, Indiana climate: Normal weather by month, frost dates and records
Winamac's normal year runs from 16°F January nights to 84°F July afternoons, with 39.8 inches of precipitation and 27 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 10.1°C, January lows of −9°C, July highs of 29°C, 1,011 mm of precipitation a year.
- NOAA stationWinamac (2 mi SSE)
- Station IDUSC00129670
- Location41.03°N 86.59°W
- Elevation690 ft (210 m)
- Population2,351
On October 23, the normal high in Winamac is 61°F and the normal low 39°F, and the chance of measurable rain or snow is 34%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Winamac.
- Jan 33° 16°
- Feb 36° 18°
- Mar 48° 28°
- Apr 61° 38°
- May 72° 50°
- Jun 81° 59°
- Jul 84° 63°
- Aug 82° 61°
- Sep 77° 53°
- Oct 64° 42°
- Nov 49° 31°
- Dec 37° 22°
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 Winamac each month?
July is the warmest month, with normal highs of 84°F; January the coldest, with normal lows of 16°F. The most precipitation falls in July (4.73 in), the least in February (2.07 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 33°F | 16°F | 24.1°F | 2.52 | 9.5 | 11 | <1 | 28 | 9 h 30 min |
| February | 36°F | 18°F | 27.3°F | 2.07 | 6.5 | 9 | <1 | 25 | 10 h 40 min |
| March | 48°F | 28°F | 37.6°F | 2.49 | 3.5 | 10 | <1 | 22 | 11 h 50 min |
| April | 61°F | 38°F | 49.5°F | 3.71 | 0.4 | 11 | <1 | 8 | 13 h 20 min |
| May | 72°F | 50°F | 60.8°F | 4.10 | 0.0 | 13 | 1 | <1 | 14 h 30 min |
| June | 81°F | 59°F | 70.1°F | 4.27 | 0.0 | 12 | 4 | <1 | 15 h 10 min |
| July | 84°F | 63°F | 73.0°F | 4.73 | 0.0 | 10 | 5 | <1 | 14 h 50 min |
| August | 82°F | 61°F | 71.3°F | 4.18 | 0.0 | 9 | 3 | <1 | 13 h 50 min |
| September | 77°F | 53°F | 64.8°F | 3.36 | 0.0 | 9 | 2 | <1 | 12 h 30 min |
| October | 64°F | 42°F | 52.9°F | 3.16 | 0.0 | 11 | <1 | 5 | 11 h 10 min |
| November | 49°F | 31°F | 40.1°F | 2.84 | 1.0 | 10 | <1 | 17 | 10 h |
| December | 37°F | 22°F | 29.5°F | 2.38 | 5.6 | 11 | <1 | 27 | 9 h 10 min |
| Year (annual) | 60°F | 40°F | 50.1°F | 39.81 | 26.5 | 125 | 14 | 133 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 0°C | −9°C | −4.4°C | 64 mm | 24 cm |
| February | 2°C | −8°C | −2.6°C | 53 mm | 17 cm |
| March | 9°C | −2°C | 3.1°C | 63 mm | 9 cm |
| April | 16°C | 3°C | 9.7°C | 94 mm | 1 cm |
| May | 22°C | 10°C | 16.0°C | 104 mm | 0 cm |
| June | 27°C | 15°C | 21.2°C | 108 mm | 0 cm |
| July | 29°C | 17°C | 22.8°C | 120 mm | 0 cm |
| August | 28°C | 16°C | 21.8°C | 106 mm | 0 cm |
| September | 25°C | 12°C | 18.2°C | 85 mm | 0 cm |
| October | 18°C | 5°C | 11.6°C | 80 mm | 0 cm |
| November | 10°C | −1°C | 4.5°C | 72 mm | 3 cm |
| December | 3°C | −6°C | −1.4°C | 60 mm | 14 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00129670; 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 Winamac?
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 (9).
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 USC00129670.
When is the last frost in Winamac?
In Winamac, the last spring frost (32°F) comes after April 25 in half of years and after May 11 in one year in ten; the first autumn frost comes before October 18 in half of years and before October 1 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 251 year in 10 after May 11; 9 in 10 after April 11
- First autumn frost, half of years before
- October 181 year in 10 before October 1; 9 in 10 before October 31
NOAA puts the median frost-free season at 173 days, and the season without a hard freeze (28°F) at 198 days.
A hard freeze (28°F) comes after April 14 in half of springs and before October 29 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Winamac in zone 5b in ZIP code 46996, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Winamac's NOAA station is in zone 6a: the coldest night of a typical year reaches −10°F (28 complete years); the map interpolates between stations and terrain, so the station and the ZIP area can differ by half a zone.
Frost dates for every NOAA station in Indiana · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00129670; 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 Winamac?
In a normal year in Winamac, 14 days a year reach 90°F, 133 nights fall to 32°F or colder and 125 days bring measurable precipitation.
- Days at 90°F or more
- 14a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 133a normal year
- Days that stay below freezing
- 42high of 32°F or less
- Days with 0.01 inch of precipitation
- 125a normal year
- Days with 1 inch of snow or more
- 10a normal year
The highest temperature in this station's record (since 1897) is 109°F, on July 8, 1897; the lowest is −29°F, on January 20, 1985.
The wettest calendar year on that record is 1993, with 50.47 in; the snowiest season is 1981–82, with 57.2 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00129670; records: ACIS (NOAA Regional Climate Centers), station USC00129670. Records use complete months only; a month missing more than three days is left out.
How sunny is Winamac?
Over a year 71% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Winamac, 3.8 kWh per square metre a day. July is the sunniest month (80%) and December the cloudiest (56%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 56% | 1.6 |
| February | 60% | 2.4 |
| March | 66% | 3.5 |
| April | 69% | 4.7 |
| May | 70% | 5.4 |
| June | 76% | 6.1 |
| July | 80% | 6.2 |
| August | 79% | 5.4 |
| September | 78% | 4.4 |
| October | 69% | 2.9 |
| November | 63% | 1.9 |
| December | 56% | 1.3 |
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 Winamac need?
A normal year in Winamac brings 6,217 heating degree days, 16% more than the median U.S. place (5,373), and 819 cooling degree days, 10% 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 3,113 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,266 | 0 |
| February | 1,056 | 0 |
| March | 849 | 1 |
| April | 472 | 7 |
| May | 192 | 62 |
| June | 32 | 183 |
| July | 5 | 255 |
| August | 10 | 203 |
| September | 98 | 93 |
| October | 387 | 14 |
| November | 749 | 0 |
| December | 1,100 | 0 |
| Year (annual) | 6,217 | 819 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00129670. 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 Winamac been warmer than normal lately?
2025 averaged 50.4°F, 0.3°F above the 1991-2020 normal of 50.1°F. 4 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 51.1°F | +1.0°F | 42.54 | – |
| 2022 | 48.4°F | −1.7°F | 33.19 | 28.6 |
| 2023 | 52.2°F | +2.1°F | 38.49 | 7.7 |
| 2024 | 52.8°F | +2.7°F | 44.12 | 10.8 |
| 2025 | 50.4°F | +0.3°F | 29.44 | 23.8 |
Over 87 complete years from 1919 to 2025, the station's annual mean temperature rose at a fitted 1.1°F per century (+0.06°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00129670; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Winamac's climate compare?
Winamac is warmer than 18 of the other 98 places with their own NOAA record in Indiana, and wetter than 15. Across the 7,247 U.S. stations with normals, its annual mean of 50.1°F is warmer than 40%.
In the Köppen classification computed from these normals, Winamac 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 Winamac share this climate record?
5 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.
- Kewanna, IN560 people · 9 mi E
- Star City, IN211 people · 4 mi SE
- Lake Bruce, IN196 people · 7 mi NE
- Monterey, IN189 people · 11 mi NE
- Pulaski, IN75 people · 5 mi SW
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 Winamac's climate
What is the coldest month in Winamac?
January, with a normal high of 33°F and a normal low of 16°F. The warmest is July (84°F by day, 63°F at night).
Does it snow in Winamac?
Yes: 27 inches in a normal year, falling on 15 days with 0.1 inch or more, the most in January (9.5 inches).
What is the rainiest month in Winamac?
July, with 4.73 in of precipitation in a normal year; the driest is February with 2.07 in.
What plant hardiness zone is Winamac in?
The USDA's 2023 map puts Winamac in zone 5b in ZIP code 46996, the nearest ZIP area. By the same method at Winamac's NOAA station, the coldest night of a typical year reaches −10°F (28 years, 1991-2020): zone 6a.
How late can frost come in Winamac?
In half of years the last 32°F night comes after April 25; in one year in ten it comes after May 11. Waiting until May 11 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Indiana climateThe statewide normals and every place in the state
- Francesville, IN16 miles from this station, 49.8°F a year
- Knox, IN19 miles from this station, 49.5°F a year
- Rochester, IN20 miles from this station, 50.2°F a year
- Logansport, IN22 miles from this station, 51.0°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made