Hoopeston, Illinois climate: Normal weather by month, frost dates and records
Hoopeston's normal year runs from 18°F January nights to 85°F July afternoons, with 40.9 inches of precipitation and 20 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 11.2°C, January lows of −8°C, July highs of 29°C, 1,039 mm of precipitation a year.
- NOAA stationHoopeston
- Station IDUSC00114198
- Location40.47°N 87.69°W
- Elevation710 ft (216 m)
- From the center1 miles
- Population4,691
On October 23, the normal high in Hoopeston is 62°F and the normal low 42°F, and the chance of measurable rain or snow is 28%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Hoopeston.
- Jan 34° 18°
- Feb 38° 22°
- Mar 50° 31°
- Apr 64° 41°
- May 74° 53°
- Jun 83° 62°
- Jul 85° 65°
- Aug 83° 63°
- Sep 79° 55°
- Oct 66° 44°
- Nov 50° 33°
- Dec 38° 24°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Hoopeston each month?
July is the warmest month, with normal highs of 85°F; January the coldest, with normal lows of 18°F. The most precipitation falls in June (4.89 in), the least in February (1.96 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 34°F | 18°F | 25.9°F | 2.12 | 6.5 | 9 | <1 | 28 | 9 h 30 min |
| February | 38°F | 22°F | 30.0°F | 1.96 | 5.2 | 8 | <1 | 24 | 10 h 40 min |
| March | 50°F | 31°F | 40.7°F | 2.82 | 2.2 | 9 | <1 | 18 | 11 h 50 min |
| April | 64°F | 41°F | 52.6°F | 3.95 | 0.4 | 11 | <1 | 6 | 13 h 10 min |
| May | 74°F | 53°F | 63.4°F | 4.78 | 0.0 | 11 | 1 | <1 | 14 h 20 min |
| June | 83°F | 62°F | 72.2°F | 4.89 | 0.0 | 10 | 5 | <1 | 15 h |
| July | 85°F | 65°F | 74.7°F | 4.59 | 0.0 | 9 | 7 | <1 | 14 h 50 min |
| August | 83°F | 63°F | 72.9°F | 3.96 | 0.0 | 8 | 5 | <1 | 13 h 50 min |
| September | 79°F | 55°F | 66.9°F | 3.36 | 0.0 | 8 | 3 | <1 | 12 h 30 min |
| October | 66°F | 44°F | 55.0°F | 3.43 | 0.1 | 9 | <1 | 3 | 11 h 10 min |
| November | 50°F | 33°F | 41.8°F | 2.91 | 0.6 | 9 | <1 | 15 | 10 h |
| December | 38°F | 24°F | 31.0°F | 2.12 | 5.3 | 8 | <1 | 25 | 9 h 20 min |
| Year (annual) | 62°F | 43°F | 52.2°F | 40.89 | 20.3 | 108 | 20 | 118 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 1°C | −8°C | −3.4°C | 54 mm | 17 cm |
| February | 3°C | −6°C | −1.1°C | 50 mm | 13 cm |
| March | 10°C | −1°C | 4.8°C | 72 mm | 6 cm |
| April | 18°C | 5°C | 11.4°C | 100 mm | 1 cm |
| May | 24°C | 11°C | 17.4°C | 121 mm | 0 cm |
| June | 28°C | 17°C | 22.3°C | 124 mm | 0 cm |
| July | 29°C | 18°C | 23.7°C | 117 mm | 0 cm |
| August | 29°C | 17°C | 22.7°C | 101 mm | 0 cm |
| September | 26°C | 13°C | 19.4°C | 85 mm | 0 cm |
| October | 19°C | 7°C | 12.8°C | 87 mm | 0 cm |
| November | 10°C | 1°C | 5.4°C | 74 mm | 2 cm |
| December | 3°C | −5°C | −0.6°C | 54 mm | 13 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00114198; 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.
When is the best weather to visit Hoopeston?
Normal highs sit between 65°F and 85°F in May, June, July, August, September and October. Of those, September has the fewest days with rain (8).
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 USC00114198.
When is the last frost in Hoopeston?
In Hoopeston, the last spring frost (32°F) comes after April 22 in half of years and after May 8 in one year in ten; the first autumn frost comes before October 19 in half of years and before October 5 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 221 year in 10 after May 8; 9 in 10 after April 7
- First autumn frost, half of years before
- October 191 year in 10 before October 5; 9 in 10 before November 1
NOAA puts the median frost-free season at 180 days, and the season without a hard freeze (28°F) at 201 days.
A hard freeze (28°F) comes after April 10 in half of springs and before October 31 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Hoopeston in zone 6a in ZIP code 60942, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Hoopeston's NOAA station is in zone 6a: the coldest night of a typical year reaches −8°F (29 complete years).
Frost dates for every NOAA station in Illinois · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00114198; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. 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 in Hoopeston?
In a normal year in Hoopeston, 20 days a year reach 90°F, 118 nights fall to 32°F or colder and 108 days bring measurable precipitation.
- Days at 90°F or more
- 20a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 118a normal year
- Days that stay below freezing
- 36high of 32°F or less
- Days with 0.01 inch of precipitation
- 108a normal year
- Days with 1 inch of snow or more
- 8a normal year
The highest temperature in this station's record (since 1887) is 111°F, on July 14, 1936; the lowest is −25°F, on February 13, 1905.
The wettest calendar year on that record is 2004, with 55.68 in; the snowiest season is 1903–04, with 77.2 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00114198; records: ACIS (NOAA Regional Climate Centers), station USC00114198. Records use complete months only; a month missing more than three days is left out.
How sunny is Hoopeston?
Over a year 74% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Hoopeston, 4.0 kWh per square metre a day. July is the sunniest month (81%) and December the cloudiest (60%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 62% | 1.8 |
| February | 66% | 2.7 |
| March | 67% | 3.6 |
| April | 70% | 4.8 |
| May | 72% | 5.5 |
| June | 79% | 6.3 |
| July | 81% | 6.3 |
| August | 81% | 5.6 |
| September | 80% | 4.6 |
| October | 72% | 3.1 |
| November | 69% | 2.1 |
| December | 60% | 1.5 |
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 much heating and cooling does Hoopeston need?
A normal year in Hoopeston brings 5,645 heating degree days, 5% more than the median U.S. place (5,373), and 1,035 cooling degree days, 14% 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 3,539 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,212 | 0 |
| February | 980 | 0 |
| March | 757 | 2 |
| April | 384 | 12 |
| May | 138 | 89 |
| June | 16 | 232 |
| July | 2 | 301 |
| August | 6 | 252 |
| September | 69 | 126 |
| October | 331 | 21 |
| November | 697 | 1 |
| December | 1,054 | 0 |
| Year (annual) | 5,645 | 1,035 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00114198. 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.
Has Hoopeston been warmer than normal lately?
2025 averaged 52.6°F, 0.4°F above the 1991-2020 normal of 52.2°F. 4 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 53.0°F | +0.8°F | 45.32 | 25.4 |
| 2022 | 51.7°F | −0.5°F | 35.16 | 25.5 |
| 2023 | 54.1°F | +1.9°F | 35.59 | 9.0 |
| 2024 | 55.0°F | +2.8°F | 44.89 | 15.7 |
| 2025 | 52.6°F | +0.4°F | 28.88 | 30.9 |
Over 107 complete years from 1905 to 2025, the station's annual mean temperature rose at a fitted 1.5°F per century (+0.08°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00114198; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Hoopeston's climate compare?
Hoopeston is warmer than 77 of the other 143 places with their own NOAA record in Illinois, and wetter than 88. Across the 7,247 U.S. stations with normals, its annual mean of 52.2°F is warmer than 50%.
In the Köppen classification computed from these normals, Hoopeston 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 Hoopeston share this climate record?
10 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.
- Rossville, IL1,162 people · 6 mi S
- Cissna Park, IL778 people · 13 mi NW
- Potomac, IL656 people · 13 mi SW
- Rankin, IL474 people · 11 mi W
- East Lynn, IL394 people · 6 mi W
- Ambia, IN234 people · 9 mi E
- Judyville, IN118 people · 17 mi SE
- Rainsville, IN21 people · 20 mi E
- Pence, IN0 people · 11 mi SE
- Tab, IN0 people · 11 mi E
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 Hoopeston's climate
What is the coldest month in Hoopeston?
January, with a normal high of 34°F and a normal low of 18°F. The warmest is July (85°F by day, 65°F at night).
Does it snow in Hoopeston?
Yes: 20 inches in a normal year, falling on 13 days with 0.1 inch or more, the most in January (6.5 inches).
What is the rainiest month in Hoopeston?
June, with 4.89 in of precipitation in a normal year; the driest is February with 1.96 in.
What plant hardiness zone is Hoopeston in?
The USDA's 2023 map puts Hoopeston in zone 6a in ZIP code 60942, the nearest ZIP area. By the same method at Hoopeston's NOAA station, the coldest night of a typical year reaches −8°F (29 years, 1991-2020): zone 6a.
How late can frost come in Hoopeston?
In half of years the last 32°F night comes after April 22; in one year in ten it comes after May 8. Waiting until May 8 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Illinois climateThe statewide normals and every place in the state
- Boswell, IN13 miles from this station, 49.8°F a year
- Danville, IL23 miles from this station, 53.1°F a year
- Watseka, IL23 miles from this station, 50.8°F a year
- Paxton, IL24 miles from this station, 50.5°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made