Madisonville, Tennessee Weather
Fireflies pulse through the magnolias. Day 78 of spring. Read this microseason across nine climate regions →
Madisonville weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 5Overcast——84°59°—
- SaturdayJun 6Overcast——86°63°+2°
- SundayJun 7Light Drizzle15%0.01″74°66°-12°
- MondayJun 8Light Showers41%0.09″86°67°+12°
- TuesdayJun 9Showers43%0.05″84°68°-2°
- WednesdayJun 10Drizzle34%—89°68°+5°
- ThursdayJun 11Heavy Drizzle19%—88°70°-1°
AQI 36 (Good), driven by PM2.5. AQI down 22 over the last 6 hours — air quality is improving sharply. PM2.5 at 5.7 µg/m³ (AQI 32) with a 0.90 fine-to-coarse ratio and 2 mph wind — combustion smoke trapped in calm air, not road dust.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
PM × Wind × Precip
PM2.5 at 5.7 µg/m³ (AQI 32) with a 0.90 fine-to-coarse ratio and 2 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.90
- Wind
- calm
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
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).
The higher the clouds, the finer the weather.
- Moonrise
- 4:27 AM
- Moonset
- 2:54 PM
- In sign
- ♒︎ Aquarius
Fireflies pulse through the magnolias
Madisonville at a glance
- Today vs. normal: 19°F below 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 5, 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 — Madisonville
SPC has placed Madisonville in the General Thunderstorms category for severe thunderstorms tomorrow.
- TODAYNONENo severe risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
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
Madisonville's warmest month is July (~78°F mean) and its coldest is January (~39°F). Rainfall peaks in July (5.3 inches) and bottoms out in October (3.1 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 39° | 4.6″ | 7 |
| February | 43° | 4.9″ | 9 |
| March | 51° | 4.9″ | 8 |
| April | 59° | 4.8″ | 8 |
| May | 68° | 4.9″ | 8 |
| June | 75° | 4.5″ | 8 |
| July | 78° | 5.3″ | 10 |
| August | 77° | 4.1″ | 8 |
| September | 71° | 4.1″ | 6 |
| October | 59° | 3.1″ | 5 |
| November | 48° | 4.8″ | 6 |
| December | 42° | 5.2″ | 8 |
Regional context
Madisonville's baseline climate, derived from NOAA NCEI 1991-2020 normals at the nearest reporting station, swings from a January mean of 39°F to a July mean of 78°F — a 39°F seasonal arc typical of the mid-latitude bands. Annual precipitation runs about 55.2 inches spread across roughly 91 days with measurable rain or snow each year.
Rainfall stays relatively even across the calendar: July tops out at 5.3 inches across 9.6 days with measurable rain, and October settles around 3.1 inches across 5.2 rainy days — a comparatively narrow seasonal range. The temperate, evenly-distributed pattern groups Madisonville with places like Kahite, TN, Sweetwater, TN and Vonore, TN, where seasonal storm tracks deliver moisture more uniformly than the continental interior.
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. Warm-season transplants — tomatoes, peppers, and basil — typically wait two weeks past that date to avoid late spring cold snaps. 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 Madisonville — 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: Kahite, TN, Sweetwater, TN, Vonore, TN, Englewood, TN, Niota, TN.
Frequently asked
- When does it freeze in Madisonville?
- Madisonville's last spring frost typically falls around mid-March, and the first fall frost arrives around mid-December.
- What is the rainy season in Madisonville?
- July is the wettest month with about 5.3 inches of rain on average; the city receives roughly 55 inches annually.
- What is the warmest month in Madisonville?
- July is typically warmest, averaging about 78°F.
- What is the coldest month in Madisonville?
- January is typically coldest, averaging about 39°F.
- When can I start a vegetable garden in Madisonville?
- 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 Madisonville get?
- Madisonville averages about 91 rainy days per year.
- What hardiness zone is Madisonville?
- Madisonville'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
Madisonville, Tennessee sits in a humid subtropical climate zone. January means hover near 39°F while July averages 78°F — a 39°F seasonal swing.
Across the year, Madisonville receives about 55 inches of precipitation spread over roughly 91 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.