Photo: AsherHeimermann · CC BY-SA 4.0Summer arrives softly in Sheboygan, cooler than in 93% of U.S. towns
Nights in January average 14°. The seasons are far apart: from a winter night to a summer afternoon the average spans 66°. Its January nights bite harder than in 88% of U.S. towns. Central heating does most of its work from October to April, in months below 50° on average.
A year in Sheboygan at a glance
Each month’s typical high and low, and what it brings.
What stands out about Sheboygan’s climate
Compared with towns across the U.S., with Sheboygan’s place in Wisconsin beside it.
What a year in Sheboygan feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 179 frost-free days a year
In half of years the last 32° night comes by April 25 and the first by October 23. Frost and day counts come from NOAA’s station at Sheboygan, WI, 3 miles from the town’s center, at about the same height.
The 2023 USDA map puts Sheboygan’s center in zone 5b: the coldest night of a typical winter, averaged over 1991–2020, reaches about −11°. Plant labels use the zone; frost dates tell you when to plant.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
About 45 inches of snow a winter
Snow, measured at Plymouth Wwtp, WI, falls mostly in January. Precipitation (rain plus melted snow) adds up to 32 inches a year; June is the wettest month and February the driest. Rain or snow falls on about 121 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Sheboygan
92% of the work is heating, so the furnace matters far more than the air conditioner. Months averaging under 55° run from October through May.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Sheboygan, WI.
Living with Sheboygan’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
179 frost-free days in zone 5b. The last frost comes by Apr 25 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Oct 23.
Months with highs of 62–84° and lows of 40° or more: May, June, July, August and September. 11 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Sheboygan from natural hazards, river flooding is the largest share (47%); heat waves, cold waves, winter storms and ice storms together are 22%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Sheboygan and its neighbors
Sheboygan Falls has the coldest January nights next door (13°, 1° colder). Differences under a degree are within what the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Sheboygan’s, farther away
TownRatings’ own comparison of NOAA 1991–2020 normals, not a NOAA product: places of 5,000+ at least 150 miles away, one per state, closest on January low, July high, precipitation and snow.
| Town | Jan. low | July high | Precip. | Snow |
|---|---|---|---|---|
| Sheboygan, WI | 14° | 80° | 32" | 45" |
| Le Roy, NY | 17° | 80° | 35" | 52" |
| Alpena, MI | 14° | 78° | 31" | 59" |
| Colchester, VT | 10° | 81° | 38" | 50" |
| Lakeville, MN | 7° | 82° | 33" | 41" |
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value. Snow and frost-free days come from the nearest weather station, so neighbors often share them.
Warmer than it used to be
The last 30 years in Sheboygan averaged 1.6° warmer than the 1900s. The biggest change is in December (+3.3°).
A bigger shift than in 63% of U.S. towns.
Change by month
The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.
How Sheboygan compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Sheboygan’s place among Wisconsin’s.
Sheboygan weather by month
Highs, lows and precipitation from NOAA’s grid at Sheboygan’s center; snow, wet days and snow on the ground from Plymouth Wwtp, WI. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 28° | 14° | 1.6" | 12.4" | 9 | 24 | 10° – 32° |
| February | 31° | 16° | 1.3" | 11.0" | 9 | 22 | 12° – 33° |
| March | 41° | 25° | 1.9" | 5.9" | 9 | 10 | 25° – 46° |
| April | 52° | 35° | 3.4" | 2.1" | 11 | 1 | 36° – 48° |
| May | 64° | 44° | 3.7" | 0.2" | 13 | 0 | 49° – 60° |
| June | 74° | 54° | 4.1" | 0.0" | 12 | 0 | 60° – 69° |
| July | 80° | 60° | 3.5" | 0.0" | 11 | 0 | 65° – 76° |
| August | 78° | 59° | 3.4" | 0.0" | 10 | 0 | 64° – 73° |
| September | 71° | 52° | 2.6" | 0.0" | 9 | 0 | 55° – 66° |
| October | 58° | 41° | 2.9" | 0.1" | 11 | 0 | 45° – 55° |
| November | 44° | 30° | 2.2" | 2.3" | 9 | 2 | 28° – 45° |
| December | 33° | 20° | 1.8" | 10.7" | 9 | 13 | 16° – 36° |
| Year | 54° | 37° | 32.2" | 44.7" | 121 | 71 |
How much a month can swing
A normal is an average. January swings the most: from 1991 to 2020 its average ranged from 10° to 32°. June is the most reliable, staying within 8°.
Where Sheboygan’s numbers come from
Normals are 30-year averages, not a forecast. How TownRatings reads climate data →
- Temperatures and precipitation: NOAA’s gridded 1991–2020 normals for the 5 km cell at Sheboygan’s center.
- Snow: Plymouth Wwtp, WI.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Sheboygan, WI, 3 miles from the town’s center, at about the same height; the nearest station that passes our checks for distance, height and agreement with the grid.
- Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
- Then and now: NOAA’s gridded normals for 1901–2000 at the same cell.
- Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).
Common questions about Sheboygan’s climate
What is the weather like in Sheboygan?
A typical July afternoon reaches 80°, a January night drops to 14°, and about 45 inches of snow falls in a normal winter. Colder January nights than 88% of U.S. towns; cooler July afternoons than 93% of U.S. towns.
How cold does it get in Sheboygan in winter?
January nights average 14°. About 133 nights a year reach 32° or below and 9 reach 0° or below. In the coldest January of the last 30 years the month averaged 10°.
How much snow does Sheboygan get?
About 45 inches in a normal winter at Plymouth Wwtp, WI, most of it in January, with snow on the ground about 71 days a year.
How hot does it get in Sheboygan?
July, with a typical high of 80° and a low of 60°. About 9 days a year reach 90° (Sheboygan, WI).
When is the first and last frost in Sheboygan?
In half of years the last spring frost (32°) comes by April 25 and the first fall frost by October 23, about 179 frost-free days, at Sheboygan, WI.
What growing zone is Sheboygan in?
Zone 5b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −11°.
What is the best time of year to visit Sheboygan?
By one simple rule (highs of 62–84° and lows of 40° or more), May, June, July, August and September. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Sheboygan getting warmer?
Yes: 1991–2020 averaged 1.6° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 63% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Sheboygan.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.