Clinton, Missouri climate: Normal weather by month, frost dates and records
Clinton's normal year runs from 19°F January nights to 90°F July afternoons, with 43.3 inches of precipitation and 11 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 12.9°C, January lows of −7°C, July highs of 32°C, 1,101 mm of precipitation a year.
- NOAA stationClinton
- Station IDUSC00231711
- Location38.40°N 93.77°W
- Elevation770 ft (235 m)
- Population9,449
On October 23, the normal high in Clinton is 67°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 Clinton.
- Jan 41° 19°
- Feb 46° 23°
- Mar 57° 33°
- Apr 67° 43°
- May 76° 54°
- Jun 85° 64°
- Jul 90° 67°
- Aug 89° 65°
- Sep 81° 56°
- Oct 69° 44°
- Nov 56° 33°
- Dec 45° 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 Clinton each month?
July is the warmest month, with normal highs of 90°F; January the coldest, with normal lows of 19°F. The most precipitation falls in May (5.66 in), the least in January (1.74 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 41°F | 19°F | 30.2°F | 1.74 | 4.6 | 6 | <1 | 28 | 9 h 50 min |
| February | 46°F | 23°F | 34.9°F | 2.15 | 2.1 | 6 | <1 | 23 | 10 h 40 min |
| March | 57°F | 33°F | 44.8°F | 3.16 | 2.0 | 10 | <1 | 17 | 11 h 50 min |
| April | 67°F | 43°F | 54.8°F | 4.58 | 0.1 | 11 | <1 | 5 | 13 h 10 min |
| May | 76°F | 54°F | 64.9°F | 5.66 | 0.0 | 12 | 1 | <1 | 14 h 10 min |
| June | 85°F | 64°F | 74.4°F | 5.07 | 0.0 | 10 | 8 | <1 | 14 h 50 min |
| July | 90°F | 67°F | 78.5°F | 3.93 | 0.0 | 8 | 15 | <1 | 14 h 40 min |
| August | 89°F | 65°F | 77.1°F | 4.03 | 0.0 | 8 | 14 | <1 | 13 h 40 min |
| September | 81°F | 56°F | 68.6°F | 4.32 | 0.0 | 8 | 5 | <1 | 12 h 30 min |
| October | 69°F | 44°F | 56.7°F | 3.29 | 0.0 | 9 | <1 | 4 | 11 h 20 min |
| November | 56°F | 33°F | 44.7°F | 3.05 | 0.3 | 7 | <1 | 15 | 10 h 10 min |
| December | 45°F | 24°F | 34.3°F | 2.35 | 2.0 | 7 | <1 | 25 | 9 h 30 min |
| Year (annual) | 67°F | 44°F | 55.3°F | 43.33 | 11.1 | 102 | 42 | 117 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 5°C | −7°C | −1.0°C | 44 mm | 12 cm |
| February | 8°C | −5°C | 1.6°C | 55 mm | 5 cm |
| March | 14°C | 0°C | 7.1°C | 80 mm | 5 cm |
| April | 19°C | 6°C | 12.7°C | 116 mm | 0 cm |
| May | 24°C | 12°C | 18.3°C | 144 mm | 0 cm |
| June | 29°C | 18°C | 23.6°C | 129 mm | 0 cm |
| July | 32°C | 20°C | 25.8°C | 100 mm | 0 cm |
| August | 32°C | 19°C | 25.1°C | 102 mm | 0 cm |
| September | 27°C | 14°C | 20.3°C | 110 mm | 0 cm |
| October | 21°C | 7°C | 13.7°C | 84 mm | 0 cm |
| November | 13°C | 1°C | 7.1°C | 77 mm | 1 cm |
| December | 7°C | −5°C | 1.3°C | 60 mm | 5 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00231711; 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 Clinton?
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 USC00231711.
When is the last frost in Clinton?
In Clinton, the last spring frost (32°F) comes after April 17 in half of years and after May 2 in one year in ten; the first autumn frost comes before October 21 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 171 year in 10 after May 2; 9 in 10 after March 31
- First autumn frost, half of years before
- October 211 year in 10 before October 7; 9 in 10 before November 1
NOAA puts the median frost-free season at 187 days, and the season without a hard freeze (28°F) at 208 days.
A hard freeze (28°F) comes after April 5 in half of springs and before October 31 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Clinton in zone 6b in ZIP code 64735, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Clinton's NOAA station is in zone 6b: the coldest night of a typical year reaches −4°F (17 complete years).
Frost dates for every NOAA station in Missouri · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00231711; 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 Clinton?
In a normal year in Clinton, 42 days a year reach 90°F (4 of them 100°F or more), 117 nights fall to 32°F or colder and 102 days bring measurable precipitation.
- Days at 90°F or more
- 42a normal year
- Days at 100°F or more
- 4a normal year
- Nights at 32°F or colder
- 117a normal year
- Days that stay below freezing
- 21high of 32°F or less
- Days with 0.01 inch of precipitation
- 102a normal year
- Days with 1 inch of snow or more
- 4a normal year
The highest temperature in this station's record (since 1906) is 118°F, on July 15, 1936; the lowest is −31°F, on December 24, 1989.
The wettest calendar year on that record is 1993, with 65.09 in; the snowiest season is 1978–79, with 37.5 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00231711; records: ACIS (NOAA Regional Climate Centers), station USC00231711. Records use complete months only; a month missing more than three days is left out.
How sunny is Clinton?
Over a year 76% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Clinton, 4.3 kWh per square metre a day. July is the sunniest month (83%) and March the cloudiest (68%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 69% | 2.2 |
| February | 68% | 3.0 |
| March | 68% | 3.9 |
| April | 71% | 5.0 |
| May | 73% | 5.7 |
| June | 81% | 6.6 |
| July | 83% | 6.5 |
| August | 81% | 5.7 |
| September | 82% | 4.8 |
| October | 76% | 3.5 |
| November | 73% | 2.5 |
| December | 69% | 1.9 |
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 Clinton need?
A normal year in Clinton brings 4,899 heating degree days, 9% fewer than the median U.S. place (5,373), and 1,406 cooling degree days, 55% more than the median (908). Six months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 4,095 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,080 | 0 |
| February | 844 | 0 |
| March | 629 | 4 |
| April | 324 | 20 |
| May | 108 | 106 |
| June | 7 | 288 |
| July | 0 | 417 |
| August | 2 | 377 |
| September | 56 | 164 |
| October | 286 | 29 |
| November | 611 | 2 |
| December | 952 | 0 |
| Year (annual) | 4,899 | 1,406 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00231711. 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 Clinton been warmer than normal lately?
Over 63 complete years from 1907 to 2015, the station's annual mean temperature rose at a fitted 1.0°F per century (+0.05°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 Clinton's climate compare?
Clinton is warmer than 67 of the other 133 places with their own NOAA record in Missouri, and wetter than 59. Across the 7,247 U.S. stations with normals, its annual mean of 55.3°F is warmer than 61%.
In the Köppen classification computed from these normals, Clinton 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 Clinton share this climate record?
7 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.
- Urich, MO476 people · 13 mi W
- Deepwater, MO384 people · 9 mi S
- Creighton, MO332 people · 18 mi NW
- Blairstown, MO97 people · 15 mi NW
- La Due, MO85 people · 8 mi SW
- Brownington, MO72 people · 11 mi S
- Hartwell, MO20 people · 9 mi W
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 Clinton's climate
What is the coldest month in Clinton?
January, with a normal high of 41°F and a normal low of 19°F. The warmest is July (90°F by day, 67°F at night).
Does it snow in Clinton?
Yes: 11 inches in a normal year, falling on 7 days with 0.1 inch or more, the most in January (4.6 inches).
What is the rainiest month in Clinton?
May, with 5.66 in of precipitation in a normal year; the driest is January with 1.74 in.
What plant hardiness zone is Clinton in?
The USDA's 2023 map puts Clinton in zone 6b in ZIP code 64735, the nearest ZIP area. By the same method at Clinton's NOAA station, the coldest night of a typical year reaches −4°F (17 years, 1991-2020): zone 6b.
How late can frost come in Clinton?
In half of years the last 32°F night comes after April 17; in one year in ten it comes after May 2. Waiting until May 2 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Missouri climateThe statewide normals and every place in the state
- Windsor, MO16 miles from this station, 55.7°F a year
- Appleton City, MO20 miles from this station, 55.4°F a year
- Truman Dam & Reservoir, MO22 miles from this station, 56.5°F a year
- Osceola, MO24 miles from this station, 56.3°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made