Ellis Grove has chilly winters and warm summers
A typical July afternoon reaches 89°, a January night drops to 24°, and about 4 inches of snow falls in a normal winter.
A year in Ellis Grove at a glance
Each month’s typical high and low, and what it brings.
What stands out about Ellis Grove’s climate
Read from where Ellis Grove sits among Illinois’s towns. The page puts what stands out first.
4 inches of snow, 43 of rain and melt
May is the wettest month and February the driest. Rain or snow falls on about 97 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
About 202 frost-free days a year
In half of years the last 32° night comes by April 8 and the first by October 30.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
What a year in Ellis Grove feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
Living with Ellis Grove’s climate
What the numbers mean for a garden, a driveway, a furnace and a free afternoon.
202 frost-free days. The last frost comes by Apr 8 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 30.
About 4" in a normal winter.
Months averaging under 55° run from November through March. Heating is 76% of the year’s heating-and-cooling load.
About 58 days a year reach 90°, and July afternoons average 89°.
The nicest months are April, May, September and October.
Parks & trails →Normals are averages. Ice storms, nor’easters, floods and heat waves are on the natural hazards page.
Natural hazards →Warmer than it used to be
The last 30 years in Ellis Grove averaged 1.0° warmer than the 1900s. The biggest change is in February (+2.0°).
A smaller shift than in 66% of U.S. towns.
Change by month
How Ellis Grove compares
Against every U.S. town on TownTapestry, each counted once, with its place in Illinois.
Ellis Grove weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 41° | 24° | 2.7" | 1.4" | 7 | 2 | 26° – 43° |
| February | 46° | 27° | 2.6" | 1.5" | 7 | 2 | 27° – 46° |
| March | 57° | 36° | 3.7" | 0.1" | 10 | 0 | 39° – 60° |
| April | 68° | 45° | 5.1" | 0 | 10 | 0 | 50° – 62° |
| May | 77° | 56° | 5.2" | 0 | 11 | 0 | 60° – 72° |
| June | 85° | 64° | 4.3" | 0 | 8 | 0 | 68° – 80° |
| July | 89° | 68° | 3.9" | 0 | 8 | 0 | 73° – 85° |
| August | 87° | 65° | 3.1" | 0 | 7 | 0 | 70° – 82° |
| September | 81° | 57° | 3.0" | 0 | 7 | 0 | 65° – 76° |
| October | 70° | 46° | 3.1" | 0 | 8 | 0 | 53° – 63° |
| November | 56° | 36° | 3.9" | 0.4" | 8 | 0 | 37° – 52° |
| December | 45° | 28° | 2.9" | 0.9" | 8 | 1 | 23° – 46° |
| Year | 67° | 46° | 43.4" | 4.3" | 97 | 6 |
Heating and cooling a home in Ellis Grove
76% of the work is heating.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. Source: NOAA station normals.
How much a month can swing
A normal is an average. December swings the most: from 1991 to 2020 its average ranged from 23° to 46°. October is the most reliable, staying within 10°.
Common questions about Ellis Grove’s climate
What is the coldest month in Ellis Grove?
January, with a typical high of 41° and a low of 24°.
What is the hottest month in Ellis Grove?
July, with a typical high of 89° and a low of 68°. About 58 days a year reach 90°.
How much snow does Ellis Grove get?
About 4 inches in a normal winter, most of it in February.
When is the first frost in Ellis Grove?
In half of years the first 32° night comes by October 30, and the last spring frost by April 8.
What is the rainiest month in Ellis Grove?
May, with 5.2 inches of rain and melted snow. The year totals 43 inches.
Neighbors talk weather
Gardens, snow, and the best days of the year in Ellis Grove.
Your answer becomes a post in Town Square.
Temperatures and rainfall come from NOAA’s gridded climate normals for Ellis Grove itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Kaskaskia Rvr Navigation Lock, IL (3 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000. Today’s forecast: National Weather Service.