Ridgeville sits near the bottom of U.S. towns for winter warmth
High summer brings afternoon highs near 81°. The gap between a January night and a July afternoon is 73°. Summers stay cool: July afternoons here are cooler than in 90% of U.S. towns. For walks and days out, the stretch from May to September brings highs of 68–81°.
A year in Ridgeville at a glance
Each month’s typical high and low, and what it brings.
What stands out about Ridgeville’s climate
Compared with towns across the U.S., with Ridgeville’s place in Wisconsin beside it.
What a year in Ridgeville feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 150 frost-free days a year
In half of years the last 32° night comes by May 6 and the first by October 3. Frost and day counts come from NOAA’s station at Cashton 3nnw, WI, 11 miles from the town’s center, 370 ft lower.
The 2023 USDA map puts Ridgeville’s center in zone 5a: the coldest night of a typical winter, averaged over 1991–2020, reaches about −16°. 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 41 inches of snow a winter
Snow, measured at Ontario 3e, WI, falls mostly in January and December. Precipitation (rain plus melted snow) adds up to 36 inches a year; June is the wettest month and February the driest. Rain or snow falls on about 103 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Ridgeville
95% 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 Cashton 3nnw, WI.
Living with Ridgeville’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
150 frost-free days in zone 5a. The last frost comes by May 6 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 3.
Months with highs of 62–84° and lows of 40° or more: May, June, July, August and September. 1.3 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Ridgeville from natural hazards, river flooding is the largest share (55%); heat waves, cold waves, winter storms and ice storms together are 27%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Ridgeville and its neighbors
Every town next door is within a degree of Ridgeville in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Ridgeville’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 |
|---|---|---|---|---|
| Ridgeville, WI | 7° | 81° | 36" | 41" |
| Peru, NY | 9° | 80° | 35" | 50" |
| Shoreview, MN | 7° | 82° | 32" | 40" |
| Colchester, VT | 10° | 81° | 38" | 50" |
| Algona, IA | 8° | 83° | 34" | 37" |
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 Ridgeville averaged 1.2° warmer than the 1900s. The biggest change is in December (+3.2°).
A smaller shift than in 64% 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 Ridgeville compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Ridgeville’s place among Wisconsin’s.
Ridgeville weather by month
Highs, lows and precipitation from NOAA’s grid at Ridgeville’s center; snow, wet days and snow on the ground from Ontario 3e, WI. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 24° | 7° | 1.2" | 11.1" | 7 | 25 | 5° – 29° |
| February | 29° | 11° | 1.1" | 8.3" | 6 | 24 | 7° – 32° |
| March | 42° | 22° | 1.8" | 6.4" | 7 | 14 | 22° – 48° |
| April | 56° | 33° | 3.6" | 1.7" | 10 | 1 | 33° – 51° |
| May | 68° | 45° | 4.4" | 0.0" | 11 | 0 | 51° – 62° |
| June | 77° | 55° | 5.2" | 0.0" | 11 | 0 | 62° – 70° |
| July | 81° | 59° | 4.3" | 0.0" | 9 | 0 | 64° – 77° |
| August | 79° | 57° | 4.3" | 0.0" | 9 | 0 | 63° – 73° |
| September | 71° | 49° | 3.9" | 0.0" | 9 | 0 | 53° – 65° |
| October | 58° | 37° | 2.7" | 0.1" | 9 | 0 | 41° – 53° |
| November | 42° | 25° | 2.0" | 2.0" | 7 | 3 | 25° – 45° |
| December | 29° | 14° | 1.4" | 11.5" | 8 | 18 | 8° – 31° |
| Year | 54° | 34° | 35.9" | 41.1" | 103 | 86 |
How much a month can swing
A normal is an average. March swings the most: from 1991 to 2020 its average ranged from 22° to 48°. June is the most reliable, staying within 8°.
Where Ridgeville’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 Ridgeville’s center.
- Snow: Ontario 3e, WI.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Cashton 3nnw, WI, 11 miles from the town’s center, 370 ft lower; 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 Ridgeville’s climate
What is the weather like in Ridgeville?
A typical July afternoon reaches 81°, a January night drops to 7°, and about 41 inches of snow falls in a normal winter. Colder January nights than 96% of U.S. towns; cooler July afternoons than 90% of U.S. towns.
How cold does it get in Ridgeville in winter?
January nights average 7°. About 162 nights a year reach 32° or below and 21 reach 0° or below. In the coldest January of the last 30 years the month averaged 5°.
How much snow does Ridgeville get?
About 41 inches in a normal winter at Ontario 3e, WI, most of it in January and December, with snow on the ground about 86 days a year.
How hot does it get in Ridgeville?
July, with a typical high of 81° and a low of 59°. About 2 days a year reach 90° (Cashton 3nnw, WI).
When is the first and last frost in Ridgeville?
In half of years the last spring frost (32°) comes by May 6 and the first fall frost by October 3, about 150 frost-free days, at Cashton 3nnw, WI.
What growing zone is Ridgeville in?
Zone 5a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −16°.
What is the best time of year to visit Ridgeville?
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 Ridgeville getting warmer?
Yes: 1991–2020 averaged 1.2° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 64% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Ridgeville.
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.