Clinton, Oklahoma climate: Normal weather by month, frost dates and records
Clinton's normal year runs from 25°F January nights to 95°F July afternoons, with 31.0 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 15.8°C, January lows of −4°C, July highs of 35°C, 788 mm of precipitation a year.
- NOAA stationClinton
- Station IDUSC00341909
- Location35.50°N 98.98°W
- Elevation1,570 ft (479 m)
- From the centerunder 1 mile
- Population8,355
On October 23, the normal high in Clinton is 72°F and the normal low 45°F, and the chance of measurable rain or snow is 22%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Clinton.
- Jan 51° 25°
- Feb 55° 29°
- Mar 65° 38°
- Apr 74° 45°
- May 82° 56°
- Jun 91° 66°
- Jul 95° 70°
- Aug 94° 69°
- Sep 86° 62°
- Oct 75° 48°
- Nov 61° 36°
- Dec 51° 27°
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 95°F; January the coldest, with normal lows of 25°F. The most precipitation falls in August (4.16 in), the least in January (0.92 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 51°F | 25°F | 38.1°F | 0.92 | 5 | <1 | 25 | 10 h |
| February | 55°F | 29°F | 41.9°F | 1.23 | 5 | <1 | 17 | 10 h 50 min |
| March | 65°F | 38°F | 51.3°F | 2.68 | 6 | <1 | 9 | 11 h 50 min |
| April | 74°F | 45°F | 59.6°F | 2.63 | 6 | <1 | 2 | 13 h |
| May | 82°F | 56°F | 69.1°F | 3.76 | 8 | 6 | <1 | 14 h |
| June | 91°F | 66°F | 78.3°F | 3.63 | 8 | 16 | <1 | 14 h 30 min |
| July | 95°F | 70°F | 82.8°F | 2.51 | 5 | 26 | <1 | 14 h 20 min |
| August | 94°F | 69°F | 81.5°F | 4.16 | 6 | 23 | <1 | 13 h 30 min |
| September | 86°F | 62°F | 73.9°F | 3.98 | 7 | 11 | <1 | 12 h 30 min |
| October | 75°F | 48°F | 61.5°F | 2.28 | 6 | 1 | 1 | 11 h 20 min |
| November | 61°F | 36°F | 48.9°F | 1.77 | 6 | <1 | 10 | 10 h 20 min |
| December | 51°F | 27°F | 39.2°F | 1.46 | 5 | <1 | 23 | 9 h 50 min |
| Year (annual) | 73°F | 48°F | 60.5°F | 31.01 | 73 | 83 | 87 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 11°C | −4°C | 3.4°C | 23 mm |
| February | 13°C | −2°C | 5.5°C | 31 mm |
| March | 18°C | 3°C | 10.7°C | 68 mm |
| April | 23°C | 7°C | 15.3°C | 67 mm |
| May | 28°C | 13°C | 20.6°C | 96 mm |
| June | 33°C | 19°C | 25.7°C | 92 mm |
| July | 35°C | 21°C | 28.2°C | 64 mm |
| August | 35°C | 20°C | 27.5°C | 106 mm |
| September | 30°C | 16°C | 23.3°C | 101 mm |
| October | 24°C | 9°C | 16.4°C | 58 mm |
| November | 16°C | 2°C | 9.4°C | 45 mm |
| December | 11°C | −3°C | 4.0°C | 37 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Weatherford (16 miles away), gets 6 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00341909; 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 and October. Of those, April has the fewest days with rain (6).
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 USC00341909.
When is the last frost in Clinton?
In Clinton, the last spring frost (32°F) comes after April 13 in half of years and after April 27 in one year in ten; the first autumn frost comes before October 28 in half of years and before October 14 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 131 year in 10 after April 27; 9 in 10 after March 31
- First autumn frost, half of years before
- October 281 year in 10 before October 14; 9 in 10 before November 9
NOAA puts the median frost-free season at 197 days, and the season without a hard freeze (28°F) at 219 days.
A hard freeze (28°F) comes after April 1 in half of springs and before November 5 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Clinton in zone 7b in ZIP code 73601, the nearest ZIP area.
Frost dates for every NOAA station in Oklahoma · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00341909; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. 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, 83 days a year reach 90°F (22 of them 100°F or more), 87 nights fall to 32°F or colder and 73 days bring measurable precipitation.
- Days at 90°F or more
- 83a normal year
- Days at 100°F or more
- 22a normal year
- Nights at 32°F or colder
- 87a normal year
- Days that stay below freezing
- 7high of 32°F or less
- Days with 0.01 inch of precipitation
- 73a normal year
The highest temperature in this station's record (since 1936) is 115°F, on July 22, 1974; the lowest is −14°F, on January 4, 1947.
The wettest calendar year on that record is 1986, with 50.44 in; the snowiest season is 1959–60, with 23.4 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00341909; records: ACIS (NOAA Regional Climate Centers), station USC00341909. Records use complete months only; a month missing more than three days is left out.
How sunny is Clinton?
Over a year 82% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Clinton, 4.9 kWh per square metre a day. July is the sunniest month (88%) and February the cloudiest (75%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 80% | 2.9 |
| February | 75% | 3.6 |
| March | 76% | 4.7 |
| April | 78% | 5.8 |
| May | 78% | 6.3 |
| June | 86% | 7.1 |
| July | 88% | 7.0 |
| August | 87% | 6.3 |
| September | 85% | 5.3 |
| October | 81% | 4.1 |
| November | 81% | 3.1 |
| December | 76% | 2.5 |
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 Clinton need?
A normal year in Clinton brings 3,622 heating degree days, 33% fewer than the median U.S. place (5,373), and 2,019 cooling degree days, 2.2 times the median (908). Five months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 5,115 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 834 | 0 |
| February | 646 | 1 |
| March | 433 | 8 |
| April | 195 | 33 |
| May | 44 | 169 |
| June | 1 | 400 |
| July | 0 | 550 |
| August | 0 | 512 |
| September | 18 | 287 |
| October | 165 | 57 |
| November | 486 | 3 |
| December | 800 | 0 |
| Year (annual) | 3,622 | 2,019 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00341909. 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.
How does Clinton's climate compare?
Clinton is warmer than 72 of the other 133 places with their own NOAA record in Oklahoma, and wetter than 29. Across the 7,247 U.S. stations with normals, its annual mean of 60.5°F is warmer than 76%.
In the Köppen classification computed from these normals, Clinton is Cfa: temperate, 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?
2 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.
- Arapaho, OK662 people · 5 mi N
- Custer City, OK369 people · 12 mi NE
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
What do Clinton's other NOAA stations record?
One more NOAA station keeps 1991-2020 normals in or near Clinton. This page uses Clinton; the other differs by site and elevation:
| Station | From the center | Elevation | Year | Jan low | Jul high | Precip. | Snow | Last frost |
|---|---|---|---|---|---|---|---|---|
| Clinton Sherman Airport USW00003932 | 22 mi S | 1,922 ft | 60.0°F | 28°F | 94°F | 23.9 | – | April 5 |
Source: NOAA NCEI 1991-2020 normals for each station. Last frost: the median last spring date of 32°F.
Questions about Clinton's climate
What is the coldest month in Clinton?
January, with a normal high of 51°F and a normal low of 25°F. The warmest is July (95°F by day, 70°F at night).
Does it snow in Clinton?
Yes. NOAA publishes no 1991-2020 snowfall normal for Clinton's NOAA station; the nearest record that keeps one, Weatherford (16 miles away), records 6 inches of snow in a normal year.
What is the rainiest month in Clinton?
August, with 4.16 in of precipitation in a normal year; the driest is January with 0.92 in.
What plant hardiness zone is Clinton in?
The USDA's 2023 map puts Clinton in zone 7b in ZIP code 73601, the nearest ZIP area.
How late can frost come in Clinton?
In half of years the last 32°F night comes after April 13; 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
- Oklahoma climateThe statewide normals and every place in the state
- Bessie, OK8 miles from this station, 60.6°F a year
- Weatherford, OK16 miles from this station, 60.0°F a year
- Butler, OK17 miles from this station, 59.8°F a year
- Hammon, OK24 miles from this station, 58.6°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made