Winnebago, Minnesota climate: Normal weather by month, frost dates and records
Winnebago's normal year runs from 6°F January nights to 82°F July afternoons, with 34.0 inches of precipitation and 47 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 7.6°C, January lows of −15°C, July highs of 28°C, 863 mm of precipitation a year.
- NOAA stationWinnebago
- Station IDUSC00219046
- Location43.76°N 94.17°W
- Elevation1,110 ft (338 m)
- Population1,381
On October 22, the normal high in Winnebago is 57°F and the normal low 35°F, and the chance of measurable rain or snow is 26%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Winnebago.
- Jan 23° 6°
- Feb 28° 10°
- Mar 40° 23°
- Apr 56° 36°
- May 69° 48°
- Jun 79° 59°
- Jul 82° 62°
- Aug 80° 60°
- Sep 74° 51°
- Oct 60° 38°
- Nov 43° 25°
- Dec 29° 13°
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 Winnebago each month?
July is the warmest month, with normal highs of 82°F; January the coldest, with normal lows of 6°F. The most precipitation falls in June (5.05 in), the least in January (0.90 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 23°F | 6°F | 14.4°F | 0.90 | 10.4 | 8 | <1 | 31 | 9 h 20 min |
| February | 28°F | 10°F | 19.0°F | 1.03 | 9.1 | 7 | <1 | 27 | 10 h 30 min |
| March | 40°F | 23°F | 31.8°F | 1.88 | 7.3 | 8 | <1 | 25 | 11 h 50 min |
| April | 56°F | 36°F | 45.9°F | 3.48 | 4.1 | 11 | <1 | 11 | 13 h 20 min |
| May | 69°F | 48°F | 58.5°F | 4.51 | 0.0 | 13 | 1 | 1 | 14 h 40 min |
| June | 79°F | 59°F | 68.9°F | 5.05 | 0.0 | 12 | 3 | <1 | 15 h 30 min |
| July | 82°F | 62°F | 72.3°F | 4.18 | 0.0 | 9 | 4 | <1 | 15 h 10 min |
| August | 80°F | 60°F | 69.8°F | 3.94 | 0.0 | 9 | 1 | <1 | 14 h |
| September | 74°F | 51°F | 62.6°F | 3.47 | 0.0 | 9 | 1 | <1 | 12 h 30 min |
| October | 60°F | 38°F | 48.9°F | 2.67 | 0.4 | 9 | <1 | 10 | 11 h 10 min |
| November | 43°F | 25°F | 33.9°F | 1.64 | 5.4 | 7 | <1 | 23 | 9 h 40 min |
| December | 29°F | 13°F | 20.7°F | 1.24 | 10.5 | 8 | <1 | 30 | 9 h |
| Year (annual) | 55°F | 36°F | 45.6°F | 33.99 | 47.2 | 109 | 10 | 159 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | −5°C | −15°C | −9.8°C | 23 mm | 26 cm |
| February | −2°C | −12°C | −7.2°C | 26 mm | 23 cm |
| March | 5°C | −5°C | −0.1°C | 48 mm | 19 cm |
| April | 13°C | 2°C | 7.7°C | 88 mm | 10 cm |
| May | 20°C | 9°C | 14.7°C | 115 mm | 0 cm |
| June | 26°C | 15°C | 20.5°C | 128 mm | 0 cm |
| July | 28°C | 17°C | 22.4°C | 106 mm | 0 cm |
| August | 27°C | 16°C | 21.0°C | 100 mm | 0 cm |
| September | 23°C | 11°C | 17.0°C | 88 mm | 0 cm |
| October | 16°C | 3°C | 9.4°C | 68 mm | 1 cm |
| November | 6°C | −4°C | 1.1°C | 42 mm | 14 cm |
| December | −2°C | −11°C | −6.3°C | 31 mm | 27 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00219046; 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 Winnebago?
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 USC00219046.
When is the last frost in Winnebago?
In Winnebago, the last spring frost (32°F) comes after April 27 in half of years and after May 8 in one year in ten; the first autumn frost comes before October 10 in half of years and before September 27 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 271 year in 10 after May 8; 9 in 10 after April 10
- First autumn frost, half of years before
- October 101 year in 10 before September 27; 9 in 10 before October 23
NOAA puts the median frost-free season at 166 days, and the season without a hard freeze (28°F) at 186 days.
A hard freeze (28°F) comes after April 15 in half of springs and before October 20 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Winnebago in zone 5a in ZIP code 56098, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Winnebago's NOAA station is in zone 5a: the coldest night of a typical year reaches −19°F (29 complete years).
Frost dates for every NOAA station in Minnesota · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00219046; 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 Winnebago?
In a normal year in Winnebago, 10 days a year reach 90°F, 159 nights fall to 32°F or colder and 109 days bring measurable precipitation.
- Days at 90°F or more
- 10a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 159a normal year
- Days that stay below freezing
- 76high of 32°F or less
- Days with 0.01 inch of precipitation
- 109a normal year
- Days with 1 inch of snow or more
- 16a normal year
The highest temperature in this station's record (since 1898) is 107°F, on July 14, 1936; the lowest is −35°F, on January 12, 1912.
The wettest calendar year on that record is 2005, with 46.34 in; the snowiest season is 2017–18, with 99.7 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00219046; records: ACIS (NOAA Regional Climate Centers), station USC00219046. Records use complete months only; a month missing more than three days is left out.
How sunny is Winnebago?
Over a year 74% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Winnebago, 4.0 kWh per square metre a day. July is the sunniest month (83%) and December the cloudiest (66%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 71% | 1.9 |
| February | 77% | 3.0 |
| March | 71% | 3.8 |
| April | 69% | 4.8 |
| May | 70% | 5.5 |
| June | 75% | 6.2 |
| July | 83% | 6.5 |
| August | 80% | 5.5 |
| September | 78% | 4.3 |
| October | 72% | 2.9 |
| November | 70% | 2.0 |
| December | 66% | 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 Winnebago need?
A normal year in Winnebago brings 7,729 heating degree days, 44% more than the median U.S. place (5,373), and 682 cooling degree days, 25% 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 2,756 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,568 | 0 |
| February | 1,286 | 0 |
| March | 1,028 | 0 |
| April | 576 | 3 |
| May | 243 | 41 |
| June | 40 | 157 |
| July | 9 | 235 |
| August | 20 | 168 |
| September | 144 | 70 |
| October | 507 | 7 |
| November | 935 | 0 |
| December | 1,375 | 0 |
| Year (annual) | 7,729 | 682 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00219046. 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 Winnebago been warmer than normal lately?
2024 averaged 49.5°F, 3.9°F above the 1991-2020 normal of 45.6°F. 3 of the 4 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 48.1°F | +2.5°F | 23.91 | 30.4 |
| 2022 | 44.6°F | −1.0°F | 24.79 | 44.2 |
| 2023 | 48.0°F | +2.4°F | 28.74 | 36.2 |
| 2024 | 49.5°F | +3.9°F | 43.07 | 10.0 |
Over 104 complete years from 1895 to 2024, 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 USC00219046; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Winnebago's climate compare?
Winnebago is warmer than 114 of the other 128 places with their own NOAA record in Minnesota, and wetter than 101. Across the 7,247 U.S. stations with normals, its annual mean of 45.6°F is warmer than 22%.
In the Köppen classification computed from these normals, Winnebago 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 Winnebago share this climate record?
Delavan has no NOAA station with 1991-2020 normals of its 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.
- Delavan, MN169 people · 7 mi E
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 Winnebago's climate
What is the coldest month in Winnebago?
January, with a normal high of 23°F and a normal low of 6°F. The warmest is July (82°F by day, 62°F at night).
Does it snow in Winnebago?
Yes: 47 inches in a normal year, falling on 23 days with 0.1 inch or more, the most in December (10.5 inches).
What is the rainiest month in Winnebago?
June, with 5.05 in of precipitation in a normal year; the driest is January with 0.90 in.
What plant hardiness zone is Winnebago in?
The USDA's 2023 map puts Winnebago in zone 5a in ZIP code 56098, the nearest ZIP area. By the same method at Winnebago's NOAA station, the coldest night of a typical year reaches −19°F (29 years, 1991-2020): zone 5a.
How late can frost come in Winnebago?
In half of years the last 32°F night comes after April 27; in one year in ten it comes after May 8. Waiting until May 8 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Minnesota climateThe statewide normals and every place in the state
- Amboy, MN8 miles from this station, 47.2°F a year
- Fairmont, MN17 miles from this station, 46.1°F a year
- Wells, MN22 miles from this station, 45.5°F a year
- Swea City, IA22 miles from this station, 43.8°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made