Ashwaubenon, Wisconsin climate: Normal weather by month, frost dates and records
Ashwaubenon's normal year runs from 10°F January nights to 81°F July afternoons, with 31.6 inches of precipitation and 61 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 7.3°C, January lows of −12°C, July highs of 27°C, 803 mm of precipitation a year.
- NOAA stationGreen Bay Weather Office
- Station IDUSC00473268
- Location44.50°N 88.11°W
- Elevation682 ft (208 m)
- From the center2 miles
- Population17,437
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Ashwaubenon.
- Jan 25° 10°
- Feb 29° 13°
- Mar 40° 23°
- Apr 53° 34°
- May 66° 46°
- Jun 76° 55°
- Jul 81° 60°
- Aug 78° 58°
- Sep 71° 50°
- Oct 57° 39°
- Nov 43° 28°
- Dec 30° 17°
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 Ashwaubenon each month?
July is the warmest month, with normal highs of 81°F; January the coldest, with normal lows of 10°F. The most precipitation falls in June (4.11 in), the least in February (1.20 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 25°F | 10°F | 17.5°F | 1.38 | 13.3 | 11 | <1 | 30 | 9 h 10 min |
| February | 29°F | 13°F | 20.8°F | 1.20 | 15.1 | 10 | <1 | 27 | 10 h 30 min |
| March | 40°F | 23°F | 31.5°F | 1.96 | 7.9 | 10 | <1 | 25 | 11 h 50 min |
| April | 53°F | 34°F | 43.7°F | 3.00 | 5.3 | 12 | <1 | 13 | 13 h 30 min |
| May | 66°F | 46°F | 55.9°F | 3.48 | 0.1 | 13 | <1 | 2 | 14 h 50 min |
| June | 76°F | 55°F | 65.5°F | 4.11 | 0.0 | 11 | 2 | <1 | 15 h 30 min |
| July | 81°F | 60°F | 70.2°F | 3.62 | 0.0 | 10 | 3 | <1 | 15 h 10 min |
| August | 78°F | 58°F | 68.4°F | 3.34 | 0.0 | 9 | 1 | <1 | 14 h 10 min |
| September | 71°F | 50°F | 60.7°F | 3.16 | 0.0 | 10 | <1 | <1 | 12 h 40 min |
| October | 57°F | 39°F | 48.3°F | 2.65 | 0.4 | 11 | <1 | 6 | 11 h |
| November | 43°F | 28°F | 35.2°F | 1.97 | 2.1 | 9 | <1 | 20 | 9 h 40 min |
| December | 30°F | 17°F | 23.7°F | 1.74 | 17.1 | 11 | <1 | 29 | 8 h 50 min |
| Year (annual) | 54°F | 36°F | 45.1°F | 31.61 | 61.3 | 126 | 6 | 151 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | −4°C | −12°C | −8.1°C | 35 mm | 34 cm |
| February | −2°C | −11°C | −6.2°C | 30 mm | 38 cm |
| March | 5°C | −5°C | −0.3°C | 50 mm | 20 cm |
| April | 12°C | 1°C | 6.5°C | 76 mm | 13 cm |
| May | 19°C | 8°C | 13.3°C | 88 mm | 0 cm |
| June | 24°C | 13°C | 18.6°C | 104 mm | 0 cm |
| July | 27°C | 16°C | 21.2°C | 92 mm | 0 cm |
| August | 26°C | 15°C | 20.2°C | 85 mm | 0 cm |
| September | 22°C | 10°C | 15.9°C | 80 mm | 0 cm |
| October | 14°C | 4°C | 9.1°C | 67 mm | 1 cm |
| November | 6°C | −2°C | 1.8°C | 50 mm | 5 cm |
| December | −1°C | −8°C | −4.6°C | 44 mm | 43 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00473268; 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 Ashwaubenon?
Normal highs sit between 65°F and 85°F in May, June, July, August and September. Of those, August 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 USC00473268.
When is the last frost in Ashwaubenon?
In Ashwaubenon, the last spring frost (32°F) comes after May 1 in half of years and after May 16 in one year in ten; the first autumn frost comes before October 11 in half of years and before September 26 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
- May 11 year in 10 after May 16; 9 in 10 after April 19
- First autumn frost, half of years before
- October 111 year in 10 before September 26; 9 in 10 before October 26
NOAA puts the median frost-free season at 160 days, and the season without a hard freeze (28°F) at 186 days.
A hard freeze (28°F) comes after April 20 in half of springs and before October 25 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Ashwaubenon in zone 5b in ZIP code 54304.
Frost dates for every NOAA station in Wisconsin · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00473268; 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 Ashwaubenon?
In a normal year in Ashwaubenon, 6 days a year reach 90°F, 151 nights fall to 32°F or colder and 126 days bring measurable precipitation.
- Days at 90°F or more
- 6a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 151a normal year
- Days that stay below freezing
- 69high of 32°F or less
- Days with 0.01 inch of precipitation
- 126a normal year
- Days with 1 inch of snow or more
- 18a normal year
The highest temperature in this station's record (since 2004) is 100°F, on July 15, 2006; the lowest is −26°F, on January 31, 2019.
The wettest calendar year on that record is 2019, with 48.46 in; the snowiest season is 2010–11, with 92.5 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00473268; records: ACIS (NOAA Regional Climate Centers), station USC00473268. Records use complete months only; a month missing more than three days is left out.
How sunny is Ashwaubenon?
Over a year 72% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Ashwaubenon, 3.8 kWh per square metre a day. July is the sunniest month (80%) and December the cloudiest (58%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 65% | 1.6 |
| February | 72% | 2.7 |
| March | 72% | 3.8 |
| April | 68% | 4.6 |
| May | 71% | 5.6 |
| June | 74% | 6.1 |
| July | 80% | 6.3 |
| August | 77% | 5.3 |
| September | 76% | 4.1 |
| October | 68% | 2.6 |
| November | 65% | 1.7 |
| December | 58% | 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 Ashwaubenon need?
A normal year in Ashwaubenon brings 7,670 heating degree days, 43% more than the median U.S. place (5,373), and 464 cooling degree days, 49% fewer than the median (908). Eight months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 2,353 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,472 | 0 |
| February | 1,238 | 0 |
| March | 1,039 | 1 |
| April | 638 | 1 |
| May | 302 | 19 |
| June | 73 | 89 |
| July | 15 | 176 |
| August | 28 | 134 |
| September | 170 | 41 |
| October | 521 | 4 |
| November | 894 | 0 |
| December | 1,280 | 0 |
| Year (annual) | 7,670 | 464 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00473268. 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 Ashwaubenon been warmer than normal lately?
2025 averaged 46.1°F, 1.0°F above the 1991-2020 normal of 45.1°F. 4 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 47.5°F | +2.4°F | 31.65 | 43.1 |
| 2022 | 45.1°F | at normal | 34.40 | 38.0 |
| 2023 | 48.0°F | +2.9°F | 26.35 | 67.7 |
| 2024 | 49.2°F | +4.1°F | 35.93 | 50.6 |
| 2025 | 46.1°F | +1.0°F | 27.35 | 56.9 |
Source: observed years: ACIS, station USC00473268. A year counts only with all twelve months complete.
How does Ashwaubenon's climate compare?
Ashwaubenon is warmer than 81 of the other 164 places with their own NOAA record in Wisconsin, and wetter than 20. Across the 7,247 U.S. stations with normals, its annual mean of 45.1°F is warmer than 20%.
In the Köppen classification computed from these normals, Ashwaubenon is Dfb: continental, no dry season, warm 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 Ashwaubenon share this climate record?
4 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.
- Hobart, WI10,876 people · 2 mi W
- Wrightstown, WI4,041 people · 12 mi S
- Pulaski, WI3,998 people · 13 mi NW
- Seymour, WI3,631 people · 11 mi W
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 Ashwaubenon's climate
What is the coldest month in Ashwaubenon?
January, with a normal high of 25°F and a normal low of 10°F. The warmest is July (81°F by day, 60°F at night).
Does it snow in Ashwaubenon?
Yes: 61 inches in a normal year, falling on 41 days with 0.1 inch or more, the most in December (17.1 inches).
What is the rainiest month in Ashwaubenon?
June, with 4.11 in of precipitation in a normal year; the driest is February with 1.20 in.
What plant hardiness zone is Ashwaubenon in?
The USDA's 2023 map puts Ashwaubenon in zone 5b in ZIP code 54304.
How late can frost come in Ashwaubenon?
In half of years the last 32°F night comes after May 1; in one year in ten it comes after May 16. Waiting until May 16 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Wisconsin climateThe statewide normals and every place in the state
- Green Bay, WI0 miles from this station, 45.7°F a year
- Denmark, WI18 miles from this station, 44.7°F a year
- Appleton, WI22 miles from this station, 45.6°F a year
- Brillion, WI24 miles from this station, 45.2°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made