Morrisonville, Illinois climate: Normal weather by month, frost dates and records
Morrisonville's normal year runs from 19°F January nights to 86°F July afternoons, with 38.1 inches of precipitation and 16 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 12.0°C, January lows of −7°C, July highs of 30°C, 968 mm of precipitation a year.
- NOAA stationMorrisonville
- Station IDUSC00115841
- Location39.42°N 89.46°W
- Elevation630 ft (192 m)
- From the centerunder 1 mile
- Population975
On October 23, the normal high in Morrisonville is 65°F and the normal low 41°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 Morrisonville.
- Jan 36° 19°
- Feb 41° 23°
- Mar 52° 32°
- Apr 65° 43°
- May 75° 54°
- Jun 83° 63°
- Jul 86° 66°
- Aug 86° 64°
- Sep 81° 56°
- Oct 68° 44°
- Nov 53° 33°
- Dec 41° 25°
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 Morrisonville each month?
July is the warmest month, with normal highs of 86°F; January the coldest, with normal lows of 19°F. The most precipitation falls in May (4.55 in), the least in February (1.82 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 36°F | 19°F | 27.5°F | 2.18 | 5.9 | 7 | <1 | 28 | 9 h 40 min |
| February | 41°F | 23°F | 32.0°F | 1.82 | 3.9 | 7 | <1 | 23 | 10 h 40 min |
| March | 52°F | 32°F | 41.9°F | 2.73 | 2.4 | 9 | <1 | 18 | 11 h 50 min |
| April | 65°F | 43°F | 53.9°F | 4.31 | 0.0 | 10 | <1 | 5 | 13 h 10 min |
| May | 75°F | 54°F | 64.7°F | 4.55 | 0.0 | 11 | 2 | <1 | 14 h 20 min |
| June | 83°F | 63°F | 73.2°F | 3.92 | 0.0 | 9 | 5 | <1 | 15 h |
| July | 86°F | 66°F | 76.0°F | 2.95 | 0.0 | 7 | 8 | <1 | 14 h 40 min |
| August | 86°F | 64°F | 74.5°F | 3.50 | 0.0 | 7 | 6 | <1 | 13 h 50 min |
| September | 81°F | 56°F | 68.1°F | 3.53 | 0.0 | 7 | 3 | <1 | 12 h 30 min |
| October | 68°F | 44°F | 55.9°F | 3.21 | 0.2 | 9 | <1 | 5 | 11 h 10 min |
| November | 53°F | 33°F | 42.8°F | 3.20 | 0.6 | 8 | <1 | 16 | 10 h |
| December | 41°F | 25°F | 32.6°F | 2.22 | 3.2 | 8 | <1 | 26 | 9 h 20 min |
| Year (annual) | 64°F | 43°F | 53.6°F | 38.12 | 16.2 | 100 | 25 | 122 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 2°C | −7°C | −2.5°C | 55 mm | 15 cm |
| February | 5°C | −5°C | 0.0°C | 46 mm | 10 cm |
| March | 11°C | 0°C | 5.5°C | 69 mm | 6 cm |
| April | 18°C | 6°C | 12.2°C | 109 mm | 0 cm |
| May | 24°C | 12°C | 18.2°C | 116 mm | 0 cm |
| June | 28°C | 17°C | 22.9°C | 100 mm | 0 cm |
| July | 30°C | 19°C | 24.4°C | 75 mm | 0 cm |
| August | 30°C | 18°C | 23.6°C | 89 mm | 0 cm |
| September | 27°C | 13°C | 20.1°C | 90 mm | 0 cm |
| October | 20°C | 7°C | 13.3°C | 82 mm | 1 cm |
| November | 12°C | 1°C | 6.0°C | 81 mm | 2 cm |
| December | 5°C | −4°C | 0.3°C | 56 mm | 8 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00115841; 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 Morrisonville?
Normal highs sit between 65°F and 85°F in April, May, June, September and October. 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 USC00115841.
When is the last frost in Morrisonville?
In Morrisonville, the last spring frost (32°F) comes after April 12 in half of years and after April 27 in one year in ten; the first autumn frost comes before October 20 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 121 year in 10 after April 27; 9 in 10 after March 29
- First autumn frost, half of years before
- October 201 year in 10 before October 5; 9 in 10 before November 1
NOAA puts the median frost-free season at 190 days, and the season without a hard freeze (28°F) at 213 days.
A hard freeze (28°F) comes after April 1 in half of springs and before October 31 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Morrisonville in zone 6a in ZIP code 62546, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Morrisonville's NOAA station is in zone 6a: the coldest night of a typical year reaches −8°F (20 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 USC00115841; 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 Morrisonville?
In a normal year in Morrisonville, 25 days a year reach 90°F (1 of them 100°F or more), 122 nights fall to 32°F or colder and 100 days bring measurable precipitation.
- Days at 90°F or more
- 25a normal year
- Days at 100°F or more
- 1a normal year
- Nights at 32°F or colder
- 122a normal year
- Days that stay below freezing
- 34high of 32°F or less
- Days with 0.01 inch of precipitation
- 100a normal year
- Days with 1 inch of snow or more
- 7a normal year
The highest temperature in this station's record (since 1979) is 104°F, on July 8, 2012; the lowest is −23°F, on January 19, 1994.
The wettest calendar year on that record is 2009, with 45.46 in; the snowiest season is 1981–82, with 49.0 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00115841; records: ACIS (NOAA Regional Climate Centers), station USC00115841. Records use complete months only; a month missing more than three days is left out.
How sunny is Morrisonville?
Over a year 75% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Morrisonville, 4.1 kWh per square metre a day. July is the sunniest month (83%) and December the cloudiest (63%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 64% | 1.9 |
| February | 66% | 2.8 |
| March | 67% | 3.7 |
| April | 72% | 5.0 |
| May | 73% | 5.6 |
| June | 81% | 6.4 |
| July | 83% | 6.4 |
| August | 82% | 5.7 |
| September | 82% | 4.7 |
| October | 74% | 3.3 |
| November | 71% | 2.3 |
| 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 Morrisonville need?
A normal year in Morrisonville brings 5,322 heating degree days, 1% fewer than the median U.S. place (5,373), and 1,206 cooling degree days, 33% 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 3,803 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,164 | 0 |
| February | 924 | 0 |
| March | 718 | 3 |
| April | 350 | 18 |
| May | 115 | 104 |
| June | 13 | 259 |
| July | 1 | 344 |
| August | 4 | 298 |
| September | 60 | 154 |
| October | 307 | 26 |
| November | 665 | 1 |
| December | 1,004 | 0 |
| Year (annual) | 5,322 | 1,206 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00115841. 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 Morrisonville been warmer than normal lately?
2025 averaged 56.5°F, 2.9°F above the 1991-2020 normal of 53.6°F. 3 of the 3 complete years since 2023 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2023 | 56.5°F | +2.9°F | 34.69 | 0.7 |
| 2024 | 57.0°F | +3.4°F | 34.74 | 7.0 |
| 2025 | 56.5°F | +2.9°F | 28.81 | 21.8 |
Source: observed years: ACIS, station USC00115841. A year counts only with all twelve months complete.
How does Morrisonville's climate compare?
Morrisonville is warmer than 102 of the other 143 places with their own NOAA record in Illinois, and wetter than 35. Across the 7,247 U.S. stations with normals, its annual mean of 53.6°F is warmer than 55%.
In the Köppen classification computed from these normals, Morrisonville 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 Morrisonville share this climate record?
12 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.
- Taylorville, IL10,263 people · 13 mi NE
- Kincaid, IL1,314 people · 12 mi N
- Edinburg, IL1,055 people · 17 mi N
- Raymond, IL919 people · 9 mi SW
- Tovey, IL447 people · 12 mi N
- Coalton, IL301 people · 12 mi SE
- Langleyville, IL301 people · 11 mi NE
- Palmer, IL211 people · 4 mi NE
- Bulpitt, IL206 people · 12 mi N
- Waggoner, IL180 people · 11 mi W
- Harvel, IL170 people · 6 mi SW
- Jeisyville, IL100 people · 12 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 Morrisonville's climate
What is the coldest month in Morrisonville?
January, with a normal high of 36°F and a normal low of 19°F. The warmest is July (86°F by day, 66°F at night).
Does it snow in Morrisonville?
Yes: 16 inches in a normal year, falling on 8 days with 0.1 inch or more, the most in January (5.9 inches).
What is the rainiest month in Morrisonville?
May, with 4.55 in of precipitation in a normal year; the driest is February with 1.82 in.
What plant hardiness zone is Morrisonville in?
The USDA's 2023 map puts Morrisonville in zone 6a in ZIP code 62546, the nearest ZIP area. By the same method at Morrisonville's NOAA station, the coldest night of a typical year reaches −8°F (20 years, 1991-2020): zone 6a.
How late can frost come in Morrisonville?
In half of years the last 32°F night comes after April 12; in one year in ten it comes after April 27. Waiting until April 27 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Illinois climateThe statewide normals and every place in the state
- Virden, IL17 miles from this station, 54.8°F a year
- Hillsboro, IL17 miles from this station, 55.5°F a year
- Pana, IL21 miles from this station, 53.6°F a year
- Carlinville, IL24 miles from this station, 53.4°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made