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Sheldon, IL Weather
Sheldon, Illinois sits at 40.7710, -87.5658. Its warmest month is July, when the day usually reaches 85F, and its coldest is January, when the night usually falls to 18F. April is the wettest, with rain on about 11 days. The hottest day in the station record is 111F on July 14, 1936, and the coldest night -25F on February 13, 1905. This page carries live conditions, an hour by hour timeline, a ten day outlook, radar, monthly averages and searchable daily history back to 1940.
About Sheldon weather
Sheldon sits at 40.7710, -87.5658 and covers about 0.753 square miles. The forecast above is live: current conditions lead with the HRRR model, corrected against the nearest reporting station and against radar overhead, because a model can lag a storm and the radar cannot.
The tabs at the top of this page carry the hour by hour timeline, the ten day outlook and live radar. Where the models disagree about a day, the rock says so on the day rather than quietly picking a winner.
The rock grades itself against what actually happened and publishes the result whether it flatters it or not. Those standings live in the Receipts.
Where these numbers come from
Current conditions and forecast: NOAA forecast grids (the National Weather Service digital forecast, the National Blend of Models, HRRR and GFS) decoded on our own server, corrected against the nearest reporting station and our own radar. Open-Meteo is consulted only as a fallback when our server is silent.
Radar: NOAA MRMS merged reflectivity, rendered into tiles by myweatherrock.
Monthly averages and records: computed by myweatherrock from NOAA GHCN-Daily station records at the nearest qualifying station, named on this page with its distance. Measurements, not estimates.
Daily history search: the town's own NOAA GHCN-Daily station file, held on our server, measurements by day. Months the station missed fall back to the Open-Meteo historical archive (reanalysis), and the page says so when it does.
What the weather is usually like in Sheldon
Sheldon is warmest in July, when the day usually reaches 85F, and coldest in January, when the night usually falls to 18F. April is the wettest month, with rain on about 11 days of it.
Usual high and low, by month
Days with rain, by month
The same year as numbers
Month
Usual high
Usual low
Rain days
Snow days
January
34F
18F
9
4
February
38F
22F
8
4
March
50F
31F
9
1
April
64F
41F
11
0
May
74F
52F
11
0
June
83F
62F
10
0
July
85F
65F
9
0
August
83F
62F
8
0
September
79F
55F
8
0
October
66F
44F
9
0
November
50F
33F
8
1
December
38F
24F
8
3
Thirty-year normals, 1991 to 2020, computed from the daily record, measured at the Hoopeston station 22 miles away. A rain day means at least a hundredth of an inch fell, the same measurable-precipitation mark the Weather Service uses. Source: computed from the station record, NOAA GHCN daily.
Sheldon weather history, back to 1940
Pick any month back to 1940 and see what the archive holds for Sheldon: the reanalysis record of what happened, day by day.
Reading this month last year to start you off.
Sheldon weather records
In 177,606 days of observations Sheldon has been as hot as 111F and as cold as -25F. Not averages: the actual days.
Hottest day
111F
July 14, 1936
Coldest night
-25F
February 13, 1905
Wettest day
10.75 in
May 9, 1893
Biggest snow
16.0 in
February 28, 1900
NOAA GHCN daily station records, observed 1902 to 2026: temperature at the Hoopeston station, 22 miles away; precipitation at the Watseka Public Works station, 9 miles away. Station measurements, not estimates. Record dates reflect the station's own observation schedule, and the official state record may live at a different station.
Common questions about Sheldon weather
Common questions
What is the weather usually like in Sheldon, IL?
Sheldon is warmest in July, when the day usually reaches 85F, and coldest in January, when the night usually falls to 18F. Rain falls on roughly 108 days a year, most often in April. Averages are thirty-year normals, 1991 to 2020, computed from the nearest NOAA station's own daily record.
How much does it rain in Sheldon, IL?
About 108 days a year see at least a hundredth of an inch, which is the Weather Service's measurable-precipitation mark. April is the wettest month with rain on about 11 of its days, and February the driest with about 8.
Does it snow in Sheldon, IL?
Yes. Snow falls on about 13 days a year, most often in January, which averages about 4 snowy days. Those are days with measurable snowfall, not days with snow lying on the ground.
What is the hottest it has ever been in Sheldon, IL?
The hottest day measured for Sheldon reached 111F on July 14, 1936, and the coldest night -25F on February 13, 1905. Both are real NOAA station measurements from the GHCN daily archive, observed 1902 to 2026, at the Hoopeston station. Not estimates, though the official state record may live at a different station.
Can I look up past weather for Sheldon, IL?
Yes, and for free. The History tab on this page takes any month back to 1940 and shows every day of it: the high, the low, what fell, and that month's hottest and coldest day. No account and no payment.
Is the Sheldon forecast on this page free, and does it track me?
It is free, carries no advertising, and needs no account. Nothing about a visitor leaves the device except the coordinates needed to fetch a forecast, and those are not stored against anyone.