Little Red School House, Illinois climate: Climate normals at a NOAA weather station
Little Red School House's normal year runs from 15°F January nights to 90°F July afternoons, with 41.4 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 10.8°C, January lows of −10°C, July highs of 32°C, 1,051 mm of precipitation a year.
- NOAA stationLittle Red School House
- Station IDUSC00115110
- Location41.71°N 87.88°W
- Elevation715 ft (218 m)
On October 23, the normal high in Little Red School House is 61°F and the normal low 39°F, and the chance of measurable rain or snow is 33%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Little Red School House.
- Jan 33° 15°
- Feb 37° 18°
- Mar 49° 28°
- Apr 62° 39°
- May 73° 50°
- Jun 84° 60°
- Jul 90° 64°
- Aug 87° 63°
- Sep 80° 55°
- Oct 65° 43°
- Nov 50° 31°
- Dec 38° 21°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like at Little Red School House each month?
July is the warmest month, with normal highs of 90°F; January the coldest, with normal lows of 15°F. The most precipitation falls in May (4.98 in), the least in February (2.00 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 33°F | 15°F | 23.9°F | 2.30 | 10 | <1 | 29 | 9 h 30 min |
| February | 37°F | 18°F | 27.3°F | 2.00 | 8 | <1 | 26 | 10 h 30 min |
| March | 49°F | 28°F | 38.3°F | 2.50 | 10 | <1 | 22 | 11 h 50 min |
| April | 62°F | 39°F | 50.6°F | 4.14 | 12 | <1 | 6 | 13 h 20 min |
| May | 73°F | 50°F | 61.5°F | 4.98 | 13 | 3 | <1 | 14 h 30 min |
| June | 84°F | 60°F | 72.0°F | 4.65 | 13 | 10 | <1 | 15 h 10 min |
| July | 90°F | 64°F | 76.8°F | 4.10 | 10 | 16 | <1 | 15 h |
| August | 87°F | 63°F | 75.1°F | 4.46 | 11 | 12 | <1 | 13 h 50 min |
| September | 80°F | 55°F | 67.4°F | 3.45 | 9 | 5 | <1 | 12 h 30 min |
| October | 65°F | 43°F | 53.9°F | 3.68 | 10 | <1 | 4 | 11 h 10 min |
| November | 50°F | 31°F | 40.5°F | 2.73 | 9 | <1 | 17 | 9 h 50 min |
| December | 38°F | 21°F | 29.7°F | 2.40 | 10 | <1 | 26 | 9 h 10 min |
| Year (annual) | 62°F | 41°F | 51.4°F | 41.39 | 125 | 45 | 131 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 1°C | −10°C | −4.5°C | 58 mm |
| February | 3°C | −8°C | −2.6°C | 51 mm |
| March | 9°C | −2°C | 3.5°C | 64 mm |
| April | 17°C | 4°C | 10.3°C | 105 mm |
| May | 23°C | 10°C | 16.4°C | 126 mm |
| June | 29°C | 15°C | 22.2°C | 118 mm |
| July | 32°C | 18°C | 24.9°C | 104 mm |
| August | 30°C | 17°C | 23.9°C | 113 mm |
| September | 27°C | 13°C | 19.7°C | 88 mm |
| October | 18°C | 6°C | 12.2°C | 93 mm |
| November | 10°C | 0°C | 4.7°C | 69 mm |
| December | 3°C | −6°C | −1.3°C | 61 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Burbank (5 miles away), gets 39 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00115110; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
Which months are mildest at Little Red School House?
Normal highs sit between 65°F and 85°F in May, June, September and October. Of those, September has the fewest days with rain (9).
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00115110.
When is the last frost at Little Red School House?
In Little Red School House, the last spring frost (32°F) comes after April 19 in half of years and after May 5 in one year in ten; the first autumn frost comes before October 22 in half of years and before October 8 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- April 191 year in 10 after May 5; 9 in 10 after April 6
- First autumn frost, half of years before
- October 221 year in 10 before October 8; 9 in 10 before November 3
NOAA puts the median frost-free season at 183 days, and the season without a hard freeze (28°F) at 206 days.
A hard freeze (28°F) comes after April 7 in half of springs and before November 1 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Little Red School House in zone 6a in ZIP code 60480, the nearest ZIP area.
Frost dates for every NOAA station in Illinois · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00115110; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get at Little Red School House?
In a normal year in Little Red School House, 45 days a year reach 90°F (2 of them 100°F or more), 131 nights fall to 32°F or colder and 125 days bring measurable precipitation.
- Days at 90°F or more
- 45a normal year
- Days at 100°F or more
- 2a normal year
- Nights at 32°F or colder
- 131a normal year
- Days that stay below freezing
- 37high of 32°F or less
- Days with 0.01 inch of precipitation
- 125a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USC00115110.
How sunny is it at Little Red School House?
Over a year 72% of the sunlight that would reach the ground under clear skies gets through the clouds at Little Red School House, 3.8 kWh per square metre a day. July is the sunniest month (80%) and January the cloudiest (59%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 59% | 1.6 |
| February | 63% | 2.5 |
| March | 67% | 3.6 |
| April | 69% | 4.7 |
| May | 70% | 5.4 |
| June | 77% | 6.1 |
| July | 80% | 6.2 |
| August | 79% | 5.3 |
| September | 79% | 4.4 |
| October | 70% | 2.9 |
| November | 66% | 1.9 |
| December | 59% | 1.4 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How many heating and cooling degree days does Little Red School House record?
A normal year at Little Red School House brings 6,041 heating degree days, 12% more than the median U.S. place (5,373), and 1,120 cooling degree days, 23% more than the median (908). Seven months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 3,512 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,274 | 0 |
| February | 1,057 | 0 |
| March | 831 | 2 |
| April | 439 | 7 |
| May | 172 | 62 |
| June | 19 | 227 |
| July | 0 | 366 |
| August | 2 | 313 |
| September | 58 | 129 |
| October | 359 | 13 |
| November | 736 | 1 |
| December | 1,096 | 0 |
| Year (annual) | 6,041 | 1,120 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00115110. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
How does Little Red School House's climate compare?
Little Red School House is warmer than 64 of the 144 places with their own NOAA record in Illinois, and wetter than 95. Across the 7,247 U.S. stations with normals, its annual mean of 51.4°F is warmer than 47%.
In the Köppen classification computed from these normals, Little Red School House is Dfa: continental, no dry season, hot summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near Little Red School House share this climate record?
15 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Orland Park, ILalso near: Burbank (10 mi, 52.4°F a year); Romeoville (12 mi, 50.9°F a year)58,020 people · 7 mi S
- Darien, IL22,015 people · 6 mi NW
- Lemont, IL18,203 people · 6 mi SW
- Palos Hills, IL18,026 people · 3 mi E
- Hinsdale, IL17,598 people · 7 mi NW
- Hickory Hills, IL14,118 people · 3 mi NE
- Western Springs, IL13,529 people · 7 mi N
- Burr Ridge, IL11,202 people · 3 mi NW
- Willowbrook, IL9,179 people · 5 mi NW
- Orland Hills, IL6,676 people · 8 mi S
- Countryside, IL6,246 people · 4 mi N
- Willow Springs, IL5,793 people · 2 mi N
- Palos Park, IL4,810 people · 4 mi SE
- Indian Head Park, IL3,956 people · 4 mi N
- Hodgkins, IL1,487 people · 4 mi N
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Little Red School House's climate
What is the coldest month at Little Red School House?
January, with a normal high of 33°F and a normal low of 15°F. The warmest is July (90°F by day, 64°F at night).
Does it snow at Little Red School House?
Yes. NOAA publishes no 1991-2020 snowfall normal for the station; the nearest record that keeps one, Burbank (5 miles away), records 39 inches of snow in a normal year.
What is the rainiest month at Little Red School House?
May, with 4.98 in of precipitation in a normal year; the driest is February with 2.00 in.
What plant hardiness zone is Little Red School House in?
The USDA's 2023 map puts Little Red School House in zone 6a in ZIP code 60480, the nearest ZIP area.
How late can frost come at Little Red School House?
In half of years the last 32°F night comes after April 19; in one year in ten it comes after May 5. Waiting until May 5 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Illinois climateThe statewide normals and every place in the state
- Burbank, IL6 miles from this station, 52.4°F a year
- Chicago Midway Airport, IL8 miles from this station, 52.1°F a year
- Lisle, IL12 miles from this station, 49.2°F a year
- Wheaton, IL12 miles from this station, 51.1°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made