Photo: TCP04 · CC BY 4.0Winter nights in Manteno Township are colder than in 77% of U.S. towns
The warmest part of a July day comes in at 84° on average. By precipitation alone, it ranks drier than 61% of U.S. towns. Decade by decade the climate has edged up, 1.3° above 1901–2000. Radiators earn their keep from November to March, the months that average under 50°.
A year in Manteno Township at a glance
Each month’s typical high and low, and what it brings.
What stands out about Manteno Township’s climate
Compared with towns across the U.S., with Manteno Township’s place in Illinois beside it.
What a year in Manteno Township feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 188 frost-free days a year
In half of years the last 32° night comes by April 19 and the first by October 24. Frost and day counts come from NOAA’s station at Kankakee Metro Wastewater, IL, 8 miles from the town’s center, at about the same height.
The 2023 USDA map puts Manteno Township’s center in zone 5b: the coldest night of a typical winter, averaged over 1991–2020, reaches about −10°. 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 29 inches of snow a winter
Snow, measured at Peotone, IL, is heaviest from January through February, about 9 inches a month. Precipitation (rain plus melted snow) adds up to 40 inches a year; June is the wettest month and February the driest. Rain or snow falls on about 108 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Manteno Township
86% 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 Kankakee Metro Wastewater, IL.
Living with Manteno Township’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
188 frost-free days in zone 5b. The last frost comes by Apr 19 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 24.
Months with highs of 62–84° and lows of 40° or more: May, June, August, September and October. 1.4 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Manteno Township from natural hazards, river flooding is the largest share (72%); heat waves, cold waves, winter storms and ice storms together are 16%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Manteno Township and its neighbors
Every town next door is within a degree of Manteno Township in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Manteno 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 |
|---|---|---|---|---|
| Manteno Township, IL | 17° | 84° | 40" | 29" |
| Claverack, NY | 16° | 84° | 42" | 31" |
| Decatur, IN | 19° | 84° | 40" | 28" |
| Struthers, OH | 19° | 84° | 41" | 28" |
| Nanticoke, PA | 18° | 84° | 42" | 36" |
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 Manteno Township averaged 1.3° warmer than the 1900s. The biggest change is in December (+2.5°).
A smaller shift than in 57% 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 Manteno Township compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Manteno Township’s place among Illinois’.
Manteno Township weather by month
Highs, lows and precipitation from NOAA’s grid at Manteno Township’s center; snow, wet days and snow on the ground from Peotone, IL. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 32° | 17° | 2.2" | 8.7" | 9 | 14 | 15° – 37° |
| February | 37° | 20° | 1.9" | 8.7" | 7 | 11 | 16° – 39° |
| March | 48° | 29° | 2.4" | 4.3" | 9 | 3 | 30° – 54° |
| April | 61° | 39° | 3.9" | 0.9" | 11 | 0 | 42° – 56° |
| May | 72° | 50° | 4.6" | 0.0" | 11 | 0 | 55° – 68° |
| June | 82° | 60° | 4.8" | 0.0" | 10 | 0 | 66° – 75° |
| July | 84° | 64° | 4.5" | 0.0" | 8 | 0 | 69° – 80° |
| August | 83° | 62° | 4.1" | 0.0" | 9 | 0 | 67° – 78° |
| September | 77° | 54° | 3.4" | 0.0" | 8 | 0 | 60° – 70° |
| October | 64° | 43° | 3.4" | 0.3" | 9 | 0 | 49° – 59° |
| November | 49° | 32° | 2.7" | 1.4" | 9 | 1 | 33° – 49° |
| December | 37° | 22° | 2.2" | 4.5" | 9 | 8 | 16° – 40° |
| Year | 61° | 41° | 40.0" | 28.8" | 108 | 38 |
How much a month can swing
A normal is an average. March swings the most: from 1991 to 2020 its average ranged from 30° to 54°. June is the most reliable, staying within 8°.
Where Manteno 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 Manteno Township’s center.
- Snow: Peotone, IL.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Kankakee Metro Wastewater, 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 Manteno Township’s climate
What is the weather like in Manteno Township?
A typical July afternoon reaches 84°, a January night drops to 17°, and about 29 inches of snow falls in a normal winter. Colder January nights than 77% of U.S. towns; cooler July afternoons than 58% of U.S. towns.
How cold does it get in Manteno Township in winter?
January nights average 17°. About 129 nights a year reach 32° or below and 8 reach 0° or below. In the coldest January of the last 30 years the month averaged 15°.
How much snow does Manteno Township get?
About 29 inches in a normal winter at Peotone, IL, heaviest from January through February, about 9 inches a month, with snow on the ground about 38 days a year.
How hot does it get in Manteno Township?
July, with a typical high of 84° and a low of 64°. About 21 days a year reach 90° (Kankakee Metro Wastewater, IL).
When is the first and last frost in Manteno Township?
In half of years the last spring frost (32°) comes by April 19 and the first fall frost by October 24, about 188 frost-free days, at Kankakee Metro Wastewater, IL.
What growing zone is Manteno Township in?
Zone 5b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −10°.
What is the best time of year to visit Manteno 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 Manteno Township getting warmer?
Yes: 1991–2020 averaged 1.3° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 57% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Manteno 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.