Rushville, Illinois climate: Normal weather by month, frost dates and records
Rushville's normal year runs from 17°F January nights to 85°F July afternoons, with 40.9 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 10.9°C, January lows of −8°C, July highs of 29°C, 1,039 mm of precipitation a year.
- NOAA stationRushville
- Station IDUSC00117551
- Location40.13°N 90.56°W
- Elevation673 ft (205 m)
- From the centerunder 1 mile
- Population2,904
On October 23, the normal high in Rushville is 62°F and the normal low 41°F, and the chance of measurable rain or snow is 24%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Rushville.
- Jan 33° 17°
- Feb 38° 21°
- Mar 50° 31°
- Apr 62° 42°
- May 72° 52°
- Jun 81° 62°
- Jul 85° 65°
- Aug 83° 63°
- Sep 77° 55°
- Oct 65° 44°
- Nov 50° 33°
- Dec 39° 23°
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 Rushville each month?
July is the warmest month, with normal highs of 85°F; January the coldest, with normal lows of 17°F. The most precipitation falls in May (5.33 in), the least in January (1.78 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 33°F | 17°F | 25.0°F | 1.78 | 6 | <1 | 28 | 9 h 40 min |
| February | 38°F | 21°F | 29.5°F | 2.09 | 6 | <1 | 24 | 10 h 40 min |
| March | 50°F | 31°F | 40.3°F | 2.60 | 7 | <1 | 19 | 11 h 50 min |
| April | 62°F | 42°F | 51.9°F | 3.88 | 9 | <1 | 4 | 13 h 10 min |
| May | 72°F | 52°F | 62.3°F | 5.33 | 10 | <1 | <1 | 14 h 20 min |
| June | 81°F | 62°F | 71.3°F | 5.01 | 9 | 4 | <1 | 15 h |
| July | 85°F | 65°F | 74.9°F | 4.03 | 7 | 8 | <1 | 14 h 50 min |
| August | 83°F | 63°F | 73.1°F | 3.75 | 7 | 7 | <1 | 13 h 50 min |
| September | 77°F | 55°F | 66.2°F | 3.92 | 7 | 3 | <1 | 12 h 30 min |
| October | 65°F | 44°F | 54.2°F | 3.43 | 7 | <1 | 3 | 11 h 10 min |
| November | 50°F | 33°F | 41.4°F | 2.67 | 6 | <1 | 16 | 10 h |
| December | 39°F | 23°F | 30.6°F | 2.41 | 6 | <1 | 26 | 9 h 20 min |
| Year (annual) | 61°F | 42°F | 51.7°F | 40.90 | 86 | 21 | 121 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 0°C | −8°C | −3.9°C | 45 mm |
| February | 3°C | −6°C | −1.4°C | 53 mm |
| March | 10°C | −1°C | 4.6°C | 66 mm |
| April | 17°C | 5°C | 11.1°C | 99 mm |
| May | 22°C | 11°C | 16.8°C | 135 mm |
| June | 27°C | 16°C | 21.8°C | 127 mm |
| July | 29°C | 18°C | 23.8°C | 102 mm |
| August | 28°C | 17°C | 22.8°C | 95 mm |
| September | 25°C | 13°C | 19.0°C | 100 mm |
| October | 18°C | 6°C | 12.3°C | 87 mm |
| November | 10°C | 0°C | 5.2°C | 68 mm |
| December | 4°C | −5°C | −0.8°C | 61 mm |
NOAA publishes no 1991-2020 snowfall normal for this station, and no record within 25 miles keeps one, so snow is left out here rather than estimated.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00117551; 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 Rushville?
Normal highs sit between 65°F and 85°F in May, June, July, August and September. Of those, September has the fewest days with rain (7).
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 USC00117551.
When is the last frost in Rushville?
In Rushville, the last spring frost (32°F) comes after April 16 in half of years and after May 3 in one year in ten; the first autumn frost comes before October 23 in half of years and before October 10 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 161 year in 10 after May 3; 9 in 10 after April 2
- First autumn frost, half of years before
- October 231 year in 10 before October 10; 9 in 10 before November 3
NOAA puts the median frost-free season at 189 days, and the season without a hard freeze (28°F) at 211 days.
A hard freeze (28°F) comes after April 4 in half of springs and before November 1 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Rushville in zone 6a in ZIP code 62681, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Rushville's NOAA station is in zone 6a: the coldest night of a typical year reaches −7°F (16 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 USC00117551; 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 Rushville?
In a normal year in Rushville, 21 days a year reach 90°F (1 of them 100°F or more), 121 nights fall to 32°F or colder and 86 days bring measurable precipitation.
- Days at 90°F or more
- 21a normal year
- Days at 100°F or more
- 1a normal year
- Nights at 32°F or colder
- 121a normal year
- Days that stay below freezing
- 37high of 32°F or less
- Days with 0.01 inch of precipitation
- 86a normal year
The highest temperature in this station's record (since 1890) is 113°F, on July 15, 1936; the lowest is −26°F, on February 13, 1905.
The wettest calendar year on that record is 1973, with 56.05 in; the snowiest season is 1959–60, with 50.6 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00117551; records: ACIS (NOAA Regional Climate Centers), station USC00117551. Records use complete months only; a month missing more than three days is left out.
How sunny is Rushville?
Over a year 74% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Rushville, 4.1 kWh per square metre a day. July is the sunniest month (82%) and January the cloudiest (63%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 63% | 1.9 |
| February | 68% | 2.8 |
| March | 68% | 3.8 |
| April | 70% | 4.9 |
| May | 73% | 5.6 |
| June | 79% | 6.3 |
| July | 82% | 6.4 |
| August | 81% | 5.5 |
| September | 82% | 4.7 |
| October | 73% | 3.2 |
| November | 70% | 2.2 |
| December | 63% | 1.6 |
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 Rushville need?
A normal year in Rushville brings 5,791 heating degree days, 8% more than the median U.S. place (5,373), and 987 cooling degree days, 9% 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 3,433 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,241 | 0 |
| February | 993 | 0 |
| March | 769 | 1 |
| April | 402 | 9 |
| May | 153 | 69 |
| June | 20 | 209 |
| July | 2 | 308 |
| August | 6 | 258 |
| September | 81 | 116 |
| October | 351 | 17 |
| November | 708 | 0 |
| December | 1,065 | 0 |
| Year (annual) | 5,791 | 987 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00117551. 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 Rushville been warmer than normal lately?
Over 85 complete years from 1890 to 2016, the station's annual mean temperature rose at a fitted -0.0°F per century (−0.00°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Rushville's climate compare?
Rushville is warmer than 69 of the other 143 places with their own NOAA record in Illinois, and wetter than 89. Across the 7,247 U.S. stations with normals, its annual mean of 51.7°F is warmer than 48%.
In the Köppen classification computed from these normals, Rushville 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 Rushville share this climate record?
8 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.
- Beardstown, IL5,803 people · 11 mi SE
- Astoria, IL887 people · 13 mi NE
- Vermont, IL559 people · 13 mi NE
- Industry, IL387 people · 14 mi N
- Littleton, IL136 people · 8 mi NW
- Browning, IL117 people · 10 mi E
- Camden, IL62 people · 11 mi W
- Ripley, IL51 people · 8 mi SW
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 Rushville's climate
What is the coldest month in Rushville?
January, with a normal high of 33°F and a normal low of 17°F. The warmest is July (85°F by day, 65°F at night).
What is the rainiest month in Rushville?
May, with 5.33 in of precipitation in a normal year; the driest is January with 1.78 in.
What plant hardiness zone is Rushville in?
The USDA's 2023 map puts Rushville in zone 6a in ZIP code 62681, the nearest ZIP area. By the same method at Rushville's NOAA station, the coldest night of a typical year reaches −7°F (16 years, 1991-2020): zone 6a.
How late can frost come in Rushville?
In half of years the last 32°F night comes after April 16; in one year in ten it comes after May 3. Waiting until May 3 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Illinois climateThe statewide normals and every place in the state
- Golden, IL24 miles from this station, 52.0°F a year
- Perry, IL26 miles from this station, 53.3°F a year
- Havana, IL29 miles from this station, 52.5°F a year
- Prairie City, IL32 miles from this station, 51.5°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made