Clinton, Oklahoma Weather
Fireflies pulse through the magnolias. Day 77 of spring. Read this microseason across nine climate regions →
Clinton weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Thunderstorm38%—92°70°—
- FridayJun 5Overcast14%—91°71°-1°
- SaturdayJun 6Showers67%0.14″88°67°-3°
- SundayJun 7Overcast66%—93°65°+5°
- MondayJun 8Overcast10%—100°76°+7°
- TuesdayJun 9Clear10%—98°78°-2°
- WednesdayJun 10Clear——96°76°-2°
Ozone at AQI 66 — peak already passed at 1 PM under overcast skies. AQI up 14 over the last 6 hours (gradual rise). Levels should ease through evening.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 66 — peak already passed at 1 PM under overcast skies. Levels should ease through evening.
- Present
- AQI 66
- UV peak
- 2.8 at earlier today
- Sky at peak
- overcast
- Projected peak
- AQI 66
PM × Wind × Precip
PM2.5 at 6.5 µg/m³, PM10 at 7.7 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.84
- Wind
- breezy
- Recent rain
- 0h in last 6h
- Pattern
- background
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 4:52 AM
- Moonset
- 2:53 PM
- In sign
- ♒︎ Aquarius
Fireflies pulse through the magnolias
Clinton at a glance
- Today vs. normal: 13°F above the seasonal normal for this latitude
- Last frost: March 20 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Peak growing season
As of June 4, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
SPC Convective Outlook
Storm Prediction Center — Clinton
SPC has placed Clinton in the Marginal Risk category for severe thunderstorms today.
- TODAYMRGLMarginal Risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
Isolated severe storms possible. Limited threat for hail or damaging wind.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| January | — | — |
| February | — | — |
| March | lettuce, peas, spinach, radishes | — |
| April | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | — |
| May | tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| June | tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| July | — | tomatoes, beans, summer squash |
| August | — | tomatoes, beans, summer squash |
| September | — | tomatoes, beans, summer squash |
| October | fall brassicas, garlic (overwinter), carrots | winter squash, tomatoes (last) |
| November | fall brassicas, garlic (overwinter), carrots | — |
| December | — | — |
A year in weather
Clinton's warmest month is July (~83°F mean) and its coldest is January (~38°F). Rainfall peaks in August (4.2 inches) and bottoms out in January (0.9 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 38° | 0.9″ | 2 |
| February | 42° | 1.2″ | 3 |
| March | 51° | 2.7″ | 4 |
| April | 60° | 2.6″ | 4 |
| May | 69° | 3.8″ | 6 |
| June | 78° | 3.6″ | 7 |
| July | 83° | 2.5″ | 4 |
| August | 82° | 4.2″ | 5 |
| September | 74° | 4.0″ | 5 |
| October | 62° | 2.3″ | 4 |
| November | 49° | 1.8″ | 3 |
| December | 39° | 1.5″ | 3 |
Regional context
Clinton's baseline climate, derived from NOAA NCEI 1991-2020 normals at the nearest reporting station, swings from a January mean of 38°F to a July mean of 83°F — a 45°F seasonal arc typical of the mid-latitude bands. Annual precipitation runs about 31 inches spread across roughly 49 days with measurable rain or snow each year.
Precipitation runs summer-dominant here: August averages 4.2 inches across 4.8 days with measurable rain, driven mostly by warm-season storms and thunderstorm activity, while January drops to just 0.9 inches across 2.0 rainy days under drier cool-season air. The warm-season-wet rhythm lines Clinton up with places like Arapaho, OK, Bessie, OK and Custer City, OK, where the May-September stretch delivers the bulk of the year's precipitation.
The frost-sensitive growing window opens around mid-March, when overnight lows reliably clear freezing for cool-season crops like peas, lettuce, spinach, and radishes. Heat-loving transplants like tomatoes, peppers, and squash generally hold off for another 10-14 days to clear the last spring frost risk window. The window closes around mid-December, when overnight lows resume dipping below freezing and frost-tender plants need protection or harvest. These dates represent 30-year central tendencies; actual year-to-year variation can shift either bookend by 7-14 days, and local microclimate features within Clinton — cold-air drainage on calm clear nights, slope aspect, distance from any nearby lake or river — can push the practical frost window earlier or later than the regional average.
Similar climates: Arapaho, OK, Bessie, OK, Custer City, OK, Foss, OK, Corn, OK.
Frequently asked
- When does it freeze in Clinton?
- Clinton's last spring frost typically falls around mid-March, and the first fall frost arrives around mid-December.
- What is the rainy season in Clinton?
- August is the wettest month with about 4.2 inches of rain on average; the city receives roughly 31 inches annually.
- What is the warmest month in Clinton?
- July is typically warmest, averaging about 83°F.
- What is the coldest month in Clinton?
- January is typically coldest, averaging about 38°F.
- When can I start a vegetable garden in Clinton?
- Cool-season crops (peas, lettuce) can be sown around the last spring frost (mid-March); warm-season crops (tomatoes, peppers) wait until 1–2 weeks after.
- How many rainy days does Clinton get?
- Clinton averages about 49 rainy days per year.
- What hardiness zone is Clinton?
- Clinton's USDA hardiness zone is determined by its lowest average winter temperature; check the USDA's online lookup with the city ZIP for the current zone designation.
Climate
Clinton, Oklahoma sits in a humid subtropical climate zone. January means hover near 38°F while July averages 83°F — a 45°F seasonal swing.
Across the year, Clinton receives about 31 inches of precipitation spread over roughly 49 rainy days.
The rhythm of the year is set by latitude (35.5°N), proximity to large water bodies, and elevation — all of which shape what grows here, when frost is likely, and what the weather story looks like day to day.