Carrollton, Missouri climate: Normal weather by month, frost dates and records
Carrollton's normal year runs from 17°F January nights to 88°F July afternoons, with 40.1 inches of precipitation and 13 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 12.1°C, January lows of −8°C, July highs of 31°C, 1,018 mm of precipitation a year.
- NOAA stationCarrollton
- Station IDUSC00231340
- Location39.36°N 93.49°W
- Elevation705 ft (215 m)
- From the centerunder 1 mile
- Population3,491
On October 23, the normal high in Carrollton is 65°F and the normal low 41°F, and the chance of measurable rain or snow is 26%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Carrollton.
- Jan 37° 17°
- Feb 43° 21°
- Mar 55° 31°
- Apr 66° 41°
- May 75° 53°
- Jun 84° 63°
- Jul 88° 67°
- Aug 87° 65°
- Sep 80° 56°
- Oct 68° 43°
- Nov 54° 32°
- Dec 42° 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 Carrollton each month?
July is the warmest month, with normal highs of 88°F; January the coldest, with normal lows of 17°F. The most precipitation falls in June (5.37 in), the least in January (1.41 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 37°F | 17°F | 27.3°F | 1.41 | 4.8 | 6 | <1 | 28 | 9 h 40 min |
| February | 43°F | 21°F | 31.9°F | 1.85 | 3.3 | 6 | <1 | 24 | 10 h 40 min |
| March | 55°F | 31°F | 42.7°F | 2.51 | 1.1 | 9 | <1 | 17 | 11 h 50 min |
| April | 66°F | 41°F | 53.5°F | 3.92 | 0.2 | 11 | <1 | 5 | 13 h 10 min |
| May | 75°F | 53°F | 64.1°F | 5.13 | 0.0 | 12 | 1 | <1 | 14 h 20 min |
| June | 84°F | 63°F | 73.6°F | 5.37 | 0.0 | 10 | 8 | <1 | 15 h |
| July | 88°F | 67°F | 77.5°F | 4.27 | 0.0 | 8 | 14 | <1 | 14 h 40 min |
| August | 87°F | 65°F | 75.7°F | 4.39 | 0.0 | 8 | 11 | <1 | 13 h 50 min |
| September | 80°F | 56°F | 67.7°F | 4.28 | 0.0 | 8 | 4 | <1 | 12 h 30 min |
| October | 68°F | 43°F | 55.6°F | 3.16 | 0.3 | 9 | <1 | 3 | 11 h 10 min |
| November | 54°F | 32°F | 42.7°F | 2.21 | 0.9 | 7 | <1 | 15 | 10 h |
| December | 42°F | 23°F | 32.1°F | 1.58 | 2.1 | 6 | <1 | 26 | 9 h 30 min |
| Year (annual) | 65°F | 43°F | 53.7°F | 40.08 | 12.7 | 97 | 38 | 117 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 3°C | −8°C | −2.6°C | 36 mm | 12 cm |
| February | 6°C | −6°C | −0.1°C | 47 mm | 8 cm |
| March | 13°C | −1°C | 5.9°C | 64 mm | 3 cm |
| April | 19°C | 5°C | 11.9°C | 100 mm | 1 cm |
| May | 24°C | 12°C | 17.8°C | 130 mm | 0 cm |
| June | 29°C | 17°C | 23.1°C | 136 mm | 0 cm |
| July | 31°C | 19°C | 25.3°C | 108 mm | 0 cm |
| August | 30°C | 18°C | 24.3°C | 112 mm | 0 cm |
| September | 27°C | 13°C | 19.8°C | 109 mm | 0 cm |
| October | 20°C | 6°C | 13.1°C | 80 mm | 1 cm |
| November | 12°C | 0°C | 5.9°C | 56 mm | 2 cm |
| December | 5°C | −5°C | 0.1°C | 40 mm | 5 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00231340; 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 Carrollton?
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 (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 USC00231340.
When is the last frost in Carrollton?
In Carrollton, the last spring frost (32°F) comes after April 16 in half of years and after May 1 in one year in ten; the first autumn frost comes before October 23 in half of years and before October 7 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 1; 9 in 10 after April 1
- First autumn frost, half of years before
- October 231 year in 10 before October 7; 9 in 10 before November 3
NOAA puts the median frost-free season at 187 days, and the season without a hard freeze (28°F) at 210 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 Carrollton in zone 6a in ZIP code 64633, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Carrollton's NOAA station is in zone 6b: the coldest night of a typical year reaches −5°F (24 complete years); the map interpolates between stations and terrain, so the station and the ZIP area can differ by half a zone.
Frost dates for every NOAA station in Missouri · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00231340; 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 Carrollton?
In a normal year in Carrollton, 38 days a year reach 90°F (2 of them 100°F or more), 117 nights fall to 32°F or colder and 97 days bring measurable precipitation.
- Days at 90°F or more
- 38a normal year
- Days at 100°F or more
- 2a normal year
- Nights at 32°F or colder
- 117a normal year
- Days that stay below freezing
- 26high of 32°F or less
- Days with 0.01 inch of precipitation
- 97a normal year
- Days with 1 inch of snow or more
- 5a normal year
The highest temperature in this station's record (since 1893) is 114°F, on July 14, 1954; the lowest is −24°F, on December 23, 1989.
The wettest calendar year on that record is 1961, with 60.80 in; the snowiest season is 1959–60, with 54.6 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00231340; records: ACIS (NOAA Regional Climate Centers), station USC00231340. Records use complete months only; a month missing more than three days is left out.
How sunny is Carrollton?
Over a year 75% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Carrollton, 4.2 kWh per square metre a day. July is the sunniest month (83%) and January the cloudiest (68%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 68% | 2.1 |
| February | 70% | 2.9 |
| March | 68% | 3.8 |
| April | 71% | 5.0 |
| May | 73% | 5.7 |
| June | 80% | 6.4 |
| July | 83% | 6.5 |
| August | 81% | 5.6 |
| September | 82% | 4.8 |
| October | 75% | 3.3 |
| November | 73% | 2.4 |
| December | 68% | 1.8 |
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 Carrollton need?
A normal year in Carrollton brings 5,336 heating degree days, 1% fewer than the median U.S. place (5,373), and 1,254 cooling degree days, 38% 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 3,838 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,168 | 0 |
| February | 928 | 0 |
| March | 691 | 1 |
| April | 357 | 12 |
| May | 117 | 89 |
| June | 8 | 266 |
| July | 1 | 388 |
| August | 2 | 333 |
| September | 62 | 141 |
| October | 314 | 22 |
| November | 670 | 1 |
| December | 1,018 | 0 |
| Year (annual) | 5,336 | 1,254 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00231340. 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 Carrollton been warmer than normal lately?
2025 averaged 55.0°F, 1.3°F above the 1991-2020 normal of 53.7°F. 3 of the 4 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 54.5°F | +0.8°F | 42.47 | 7.0 |
| 2022 | 52.7°F | −1.0°F | 30.84 | 20.1 |
| 2023 | 55.5°F | +1.8°F | 31.11 | 2.0 |
| 2025 | 55.0°F | +1.3°F | 32.42 | – |
Over 68 complete years from 1949 to 2025, the station's annual mean temperature rose at a fitted 2.3°F per century (+0.13°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00231340; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Carrollton's climate compare?
Carrollton is warmer than 33 of the other 133 places with their own NOAA record in Missouri, and wetter than 25. Across the 7,247 U.S. stations with normals, its annual mean of 53.7°F is warmer than 56%.
In the Köppen classification computed from these normals, Carrollton 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 Carrollton share this climate record?
3 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.
- Bosworth, MO209 people · 11 mi NE
- Bogard, MO163 people · 7 mi N
- Tina, MO136 people · 13 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 Carrollton's climate
What is the coldest month in Carrollton?
January, with a normal high of 37°F and a normal low of 17°F. The warmest is July (88°F by day, 67°F at night).
Does it snow in Carrollton?
Yes: 13 inches in a normal year, falling on 7 days with 0.1 inch or more, the most in January (4.8 inches).
What is the rainiest month in Carrollton?
June, with 5.37 in of precipitation in a normal year; the driest is January with 1.41 in.
What plant hardiness zone is Carrollton in?
The USDA's 2023 map puts Carrollton in zone 6a in ZIP code 64633, the nearest ZIP area. By the same method at Carrollton's NOAA station, the coldest night of a typical year reaches −5°F (24 years, 1991-2020): zone 6b.
How late can frost come in Carrollton?
In half of years the last 32°F night comes after April 16; in one year in ten it comes after May 1. Waiting until May 1 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Missouri climateThe statewide normals and every place in the state
- Waverly, MO11 miles from this station, 54.6°F a year
- Brunswick, MO19 miles from this station, 54.1°F a year
- Marshall, MO21 miles from this station, 54.0°F a year
- Higginsville, MO23 miles from this station, 53.6°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made