Photo: AviationTraveler · CC BY 4.0Winter nights in Prairie du Chien are colder than in 94% of U.S. towns
July afternoons average 83°. The gap between a January night and a July afternoon is 73°. Precipitation is light here, less than falls on 70% of U.S. towns. Warm coats and heating bills mark the months from November to April, when means dip under 50°.
A year in Prairie du Chien at a glance
Each month’s typical high and low, and what it brings.
What stands out about Prairie du Chien’s climate
Compared with towns across the U.S., with Prairie du Chien’s place in Wisconsin beside it.
What a year in Prairie du Chien feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 166 frost-free days a year
In half of years the last 32° night comes by April 28 and the first by October 12. Frost and day counts come from NOAA’s station at Prairie Du Chien, WI, 0.7 miles from the town’s center, at about the same height.
The 2023 USDA map puts Prairie du Chien’s center in zone 5a: the coldest night of a typical winter, averaged over 1991–2020, reaches about −18°. 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 34 inches of snow a winter
Snow, measured at Prairie Du Chien, WI, falls mostly in January, February and December. Precipitation (rain plus melted snow) adds up to 37 inches a year; June is the wettest month and February the driest. Rain or snow falls on about 105 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Prairie du Chien
90% of the work is heating, so the furnace matters far more than the air conditioner. Months averaging under 55° run from October through April.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Prairie Du Chien, WI.
Living with Prairie du Chien’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
166 frost-free days in zone 5a. The last frost comes by Apr 28 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 12.
Months with highs of 62–84° and lows of 40° or more: May, June, July, August and September. 3.5 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Prairie du Chien from natural hazards, river flooding is the largest share (46%); heat waves, cold waves, winter storms and ice storms together are 31%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Prairie du Chien and its neighbors
Every town next door is within a degree of Prairie du Chien in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Prairie du Chien’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 |
|---|---|---|---|---|
| Prairie du Chien, WI | 10° | 83° | 37" | 34" |
| Boone, IA | 11° | 84° | 36" | 36" |
| Spring Grove, IL | 14° | 83° | 37" | 35" |
| Cottage Grove, MN | 7° | 82° | 33" | 41" |
| Westville, IN | 16° | 83° | 39" | 34" |
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 Prairie du Chien averaged 0.7° warmer than the 1900s. The biggest change is in December (+2.4°).
A smaller shift than in 94% 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 Prairie du Chien compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Prairie du Chien’s place among Wisconsin’s.
Prairie du Chien weather by month
Highs, lows and precipitation from NOAA’s grid at Prairie du Chien’s center; snow, wet days and snow on the ground from Prairie Du Chien, WI. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 27° | 10° | 1.2" | 9.0" | 8 | 21 | 8° – 31° |
| February | 32° | 14° | 1.2" | 8.6" | 7 | 21 | 10° – 34° |
| March | 45° | 26° | 2.0" | 4.3" | 8 | 8 | 27° – 51° |
| April | 59° | 37° | 3.8" | 1.4" | 11 | 0 | 38° – 54° |
| May | 71° | 48° | 4.6" | 0.0" | 12 | 0 | 54° – 66° |
| June | 80° | 58° | 5.8" | 0.0" | 11 | 0 | 66° – 73° |
| July | 83° | 63° | 4.5" | 0.0" | 9 | 0 | 67° – 79° |
| August | 81° | 60° | 4.1" | 0.0" | 8 | 0 | 66° – 77° |
| September | 74° | 52° | 4.0" | 0.0" | 9 | 0 | 56° – 69° |
| October | 61° | 40° | 2.7" | 0.2" | 8 | 0 | 45° – 56° |
| November | 45° | 28° | 2.1" | 1.5" | 7 | 1 | 28° – 48° |
| December | 32° | 17° | 1.5" | 8.8" | 8 | 13 | 10° – 35° |
| Year | 58° | 38° | 37.4" | 33.8" | 105 | 64 |
How much a month can swing
A normal is an average. December swings the most: from 1991 to 2020 its average ranged from 10° to 35°. June is the most reliable, staying within 7°.
Where Prairie du Chien’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 Prairie du Chien’s center.
- Snow: Prairie Du Chien, WI (NOAA station in town).
- Frost, freezing nights, 90° and 100° days, heating and cooling: Prairie Du Chien, WI, 0.7 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 Prairie du Chien’s climate
What is the weather like in Prairie du Chien?
A typical July afternoon reaches 83°, a January night drops to 10°, and about 34 inches of snow falls in a normal winter. Colder January nights than 94% of U.S. towns; cooler July afternoons than 69% of U.S. towns.
How cold does it get in Prairie du Chien in winter?
January nights average 10°. About 148 nights a year reach 32° or below and 19 reach 0° or below. In the coldest January of the last 30 years the month averaged 8°.
How much snow does Prairie du Chien get?
About 34 inches in a normal winter at Prairie Du Chien, WI, most of it in January, February and December, with snow on the ground about 64 days a year.
How hot does it get in Prairie du Chien?
July, with a typical high of 83° and a low of 63°. About 11 days a year reach 90° (Prairie Du Chien, WI).
When is the first and last frost in Prairie du Chien?
In half of years the last spring frost (32°) comes by April 28 and the first fall frost by October 12, about 166 frost-free days, at Prairie Du Chien, WI.
What growing zone is Prairie du Chien in?
Zone 5a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −18°.
What is the best time of year to visit Prairie du Chien?
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 Prairie du Chien getting warmer?
Yes: 1991–2020 averaged 0.7° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 94% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Prairie du Chien.
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.