Nights turn raw in Cazenovia Township each January, colder than in 79% of U.S. towns
Midsummer highs settle at about 85°. It is a dry place: less rain and snow fall here than on 70% of U.S. towns. Compared with 1901–2000, the average now sits 1.4° higher. Garden chairs stay out from May to June and August to October, the months with highs of 65–83°.
A year in Cazenovia Township at a glance
Each month’s typical high and low, and what it brings.
What stands out about Cazenovia Township’s climate
Compared with towns across the U.S., with Cazenovia Township’s place in Illinois beside it.
What a year in Cazenovia Township feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 178 frost-free days a year
In half of years the last 32° night comes by April 20 and the first by October 17. Frost and day counts come from NOAA’s station at Lacon, IL, 11 miles from the town’s center, 250 ft lower.
The 2023 USDA map puts Cazenovia Township’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 28 inches of snow a winter
Snow, measured at Roanoke, IL, falls mostly in February. Precipitation (rain plus melted snow) adds up to 37 inches a year; May is the wettest month and February the driest. Rain or snow falls on about 110 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Cazenovia Township
83% of the work is heating. 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 Lacon, IL.
Living with Cazenovia Township’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
178 frost-free days in zone 5b. The last frost comes by Apr 20 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 17.
Months with highs of 62–84° and lows of 40° or more: May, June, August, September and October. 0.1 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Cazenovia Township from natural hazards, river flooding is the largest share (58%); heat waves, cold waves, winter storms and ice storms together are 16%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Cazenovia Township and its neighbors
Every town next door is within a degree of Cazenovia Township in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Cazenovia Township’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 |
|---|---|---|---|---|
| Cazenovia Township, IL | 16° | 85° | 37" | 28" |
| Ottumwa, IA | 14° | 86° | 37" | 24" |
| Napoleon, OH | 19° | 85° | 36" | 25" |
| Auburn, IN | 17° | 84° | 38" | 30" |
| Lock Haven, PA | 19° | 86° | 41" | 30" |
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 Cazenovia Township averaged 1.4° warmer than the 1900s. The biggest change is in December (+2.7°).
A bigger shift than in 52% 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 Cazenovia Township compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Cazenovia Township’s place among Illinois’.
Cazenovia Township weather by month
Highs, lows and precipitation from NOAA’s grid at Cazenovia Township’s center; snow, wet days and snow on the ground from Roanoke, IL. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 32° | 16° | 1.9" | 6.4" | 9 | 14 | 17° – 36° |
| February | 37° | 20° | 1.8" | 9.1" | 9 | 15 | 16° – 40° |
| March | 50° | 30° | 2.5" | 3.6" | 10 | 5 | 32° – 54° |
| April | 63° | 40° | 3.8" | 0.6" | 11 | 0 | 44° – 58° |
| May | 74° | 51° | 4.7" | 0.0" | 12 | 0 | 57° – 71° |
| June | 83° | 61° | 4.1" | 0.0" | 10 | 0 | 67° – 75° |
| July | 85° | 64° | 4.0" | 0.0" | 9 | 0 | 69° – 81° |
| August | 83° | 62° | 3.6" | 0.0" | 9 | 0 | 67° – 79° |
| September | 78° | 54° | 3.4" | 0.0" | 7 | 0 | 61° – 71° |
| October | 65° | 43° | 3.0" | 0.0" | 9 | 0 | 49° – 60° |
| November | 50° | 32° | 2.5" | 1.2" | 8 | 1 | 33° – 50° |
| December | 38° | 22° | 2.2" | 7.0" | 9 | 8 | 16° – 40° |
| Year | 61° | 41° | 37.4" | 27.9" | 110 | 42 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 16° to 40°. June is the most reliable, staying within 8°.
Where Cazenovia Township’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 Cazenovia Township’s center.
- Snow: Roanoke, IL.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Lacon, IL, 11 miles from the town’s center, 250 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 Cazenovia Township’s climate
What is the weather like in Cazenovia Township?
A typical July afternoon reaches 85°, a January night drops to 16°, and about 28 inches of snow falls in a normal winter. Colder January nights than 79% of U.S. towns; hotter July afternoons than 51% of U.S. towns.
How cold does it get in Cazenovia Township in winter?
January nights average 16°. About 121 nights a year reach 32° or below and 6 reach 0° or below. In the coldest January of the last 30 years the month averaged 17°.
How much snow does Cazenovia Township get?
About 28 inches in a normal winter at Roanoke, IL, most of it in February, with snow on the ground about 42 days a year.
How hot does it get in Cazenovia Township?
July, with a typical high of 85° and a low of 64°. About 29 days a year reach 90° (Lacon, IL).
When is the first and last frost in Cazenovia Township?
In half of years the last spring frost (32°) comes by April 20 and the first fall frost by October 17, about 178 frost-free days, at Lacon, IL.
What growing zone is Cazenovia Township 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 Cazenovia Township?
By one simple rule (highs of 62–84° and lows of 40° or more), May, June, August, September and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Cazenovia Township getting warmer?
Yes: 1991–2020 averaged 1.4° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 52% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Cazenovia Township.
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.