William Moats Farm · Photo: IvoShandor · CC BY 2.5Winter nights in Lafayette Township are colder than in 89% of U.S. towns
Peak summer warmth arrives in July, with afternoons near 83°. The seasons are far apart: from a winter night to a summer afternoon the average spans 70°. In July, afternoons here are cooler than in 68% of U.S. towns. The frost-free window for a garden runs roughly April 26 to October 13.
A year in Lafayette Township at a glance
Each month’s typical high and low, and what it brings.
What stands out about Lafayette Township’s climate
Compared with towns across the U.S., with Lafayette Township’s place in Illinois beside it.
What a year in Lafayette Township feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 168 frost-free days a year
In half of years the last 32° night comes by April 26 and the first by October 13. Frost and day counts come from NOAA’s station at Rochelle, IL, 8 miles from the town’s center, at about the same height.
The 2023 USDA map puts Lafayette Township’s center in zone 5b: the coldest night of a typical winter, averaged over 1991–2020, reaches about −14°. 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 32 inches of snow a winter
Snow, measured at Oregon, IL, falls mostly in January. Precipitation (rain plus melted snow) adds up to 39 inches a year; June is the wettest month and January the driest. Rain or snow falls on about 88 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Lafayette Township
91% 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 Rochelle, IL.
Living with Lafayette Township’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
168 frost-free days in zone 5b. The last frost comes by Apr 26 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 13.
Months with highs of 62–84° and lows of 40° or more: May, June, July, August, September and October.
Parks & trails →Of the yearly building losses FEMA expects in Lafayette Township from natural hazards, river flooding is the largest share (65%); heat waves, cold waves, winter storms and ice storms together are 10%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Lafayette Township and its neighbors
Every town next door is within a degree of Lafayette Township in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Lafayette 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 |
|---|---|---|---|---|
| Lafayette Township, IL | 13° | 83° | 39" | 32" |
| Grinnell, IA | 12° | 84° | 38" | 31" |
| Kendallville, IN | 17° | 83° | 38" | 36" |
| Sayre, PA | 17° | 84° | 37" | 35" |
| Ghent, NY | 16° | 84° | 42" | 31" |
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 Lafayette Township averaged 1.1° warmer than the 1900s. The biggest change is in December (+2.5°).
A smaller shift than in 71% 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 Lafayette Township compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Lafayette Township’s place among Illinois’.
Lafayette Township weather by month
Highs, lows and precipitation from NOAA’s grid at Lafayette Township’s center; snow, wet days and snow on the ground from Oregon, IL. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | 30-yr range |
|---|---|---|---|---|---|---|
| January | 29° | 13° | 1.7" | 13.6" | 7 | 12° – 33° |
| February | 34° | 17° | 1.8" | 6.7" | 6 | 12° – 37° |
| March | 47° | 28° | 2.4" | 3.0" | 7 | 29° – 52° |
| April | 60° | 37° | 3.6" | 0.8" | 8 | 40° – 55° |
| May | 72° | 49° | 4.7" | 0.0" | 10 | 54° – 67° |
| June | 81° | 58° | 5.2" | 0.0" | 9 | 65° – 74° |
| July | 83° | 62° | 4.1" | 0.0" | 7 | 67° – 79° |
| August | 82° | 60° | 4.0" | 0.0" | 7 | 65° – 77° |
| September | 76° | 53° | 3.5" | 0.0" | 7 | 58° – 69° |
| October | 63° | 41° | 2.9" | 0.0" | 7 | 47° – 58° |
| November | 47° | 30° | 2.5" | 1.5" | 6 | 30° – 48° |
| December | 34° | 19° | 2.1" | 6.7" | 7 | 13° – 38° |
| Year | 59° | 39° | 38.5" | 32.3" | 88 |
How much a month can swing
A normal is an average. December swings the most: from 1991 to 2020 its average ranged from 13° to 38°. June is the most reliable, staying within 9°.
Where Lafayette 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 Lafayette Township’s center.
- Snow: Oregon, IL.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Rochelle, IL, 8 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 Lafayette Township’s climate
What is the weather like in Lafayette Township?
A typical July afternoon reaches 83°, a January night drops to 13°, and about 32 inches of snow falls in a normal winter. Colder January nights than 89% of U.S. towns; cooler July afternoons than 68% of U.S. towns.
How cold does it get in Lafayette Township in winter?
January nights average 13°. About 145 nights a year reach 32° or below and 16 reach 0° or below. In the coldest January of the last 30 years the month averaged 12°.
How much snow does Lafayette Township get?
About 32 inches in a normal winter at Oregon, IL, most of it in January.
How hot does it get in Lafayette Township?
July, with a typical high of 83° and a low of 62°. About 11 days a year reach 90° (Rochelle, IL).
When is the first and last frost in Lafayette Township?
In half of years the last spring frost (32°) comes by April 26 and the first fall frost by October 13, about 168 frost-free days, at Rochelle, IL.
What growing zone is Lafayette Township in?
Zone 5b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −14°.
What is the best time of year to visit Lafayette Township?
By one simple rule (highs of 62–84° and lows of 40° or more), May, June, July, August, September and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Lafayette Township getting warmer?
Yes: 1991–2020 averaged 1.1° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 71% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Lafayette 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.