Clarksville, Tennessee Weather
Thunder quiets the land. Day 93 of summer. Read this microseason across nine climate regions →
Clarksville weather forecast — hour by hour, 7-day outlook, NOAA radar
Conditions updated 9:21 AM CDT · Open-Meteo
- TodaySep 21Heavy Rain later—0.42″94°73°—
- TuesdaySep 22Clear——86°68°-8°
- WednesdaySep 23Overcast——81°60°-5°
- ThursdaySep 24Overcast——84°58°+3°
- FridaySep 25Overcast——86°62°+2°
- SaturdaySep 26Overcast——87°62°+1°
- SundaySep 27Overcast——85°67°-2°
Air quality now AQI 55 · Moderate
AQI 55 (Moderate), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 11.4 µg/m³, PM10 at 11.7 µg/m³ — typical background levels with no transport signature.
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 44. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
- Present
- AQI 44
- UV peak
- 3.8 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 11
PM × Wind × Precip
PM2.5 at 11.4 µg/m³, PM10 at 11.7 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.97
- Wind
- light
- 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).
September dries up ditches or breaks down bridges.
- Moonrise
- 4:12 PM
- Moonset
- 1:20 AM
- In sign
- ♑︎ Capricorn
Thunder quiets the land
Read this microseason across nine climate regions →
All 72 microseasons on the year wheel →
Clarksville at a glance
- Today vs. normal: Today averages 84°F (high 94°F, low 73°F), 15°F above the 69°F normal for Sep 21
- Last frost: April 3 (1991–2020 median, NOAA station 3 km away)
- Microseason: Sep 21–25
- Planting calendar: September — plant garlic (overwinter); harvest tomatoes, peppers, beans, summer squash, winter squash
16-Day Forecast — Clarksville
- Mon94°73°8%
- Tue86°68°6%
- Wed81°60°1%
- Thu84°58°1%
- Fri86°62°0%
- Sat87°62°3%
- Sun85°67°4%
- Mon85°66°7%
- Tue88°65°29%
- Wed89°66°30%
- Thu90°63°10%
- Fri92°62°13%
- Sat90°66°23%
- Sun74°58°20%
- Mon67°48°28%
- Tue68°42°32%
Forecast data from Open-Meteo (CC BY 4.0).
Live wind & temperature near Clarksville
Interactive wind and temperature map centered on Clarksville — it loads in your browser. Open the full weather map.
Right now in the garden
Fall planting + final harvests
As of September 21, the season's first frost (typically November 1) is approaching. Pick what frost-tender plants still carry before the next cold front. This city's planting calendar for September: plant garlic (overwinter); harvest tomatoes, peppers, beans, summer squash, and winter squash.
SPC Convective Outlook
Storm Prediction Center — Clarksville
SPC includes Clarksville in the general thunderstorm area today — no severe risk, but storms are possible.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3NONENo severe risk
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook.
Sun & seasons in Clarksville
Clarksville sits in Montgomery County, where the year’s longest day runs 14h 40m of daylight and its shortest just 9h 39m — a swing of +5h between the June and December solstices. Clocks spring forward on Sunday, March 8, 2026 and fall back on Sunday, November 1, 2026.
Nashville, the state’s largest city, lies about 41 miles to the SE. The nearest town Clarksville tracks is Nashville, roughly 41 miles to the SE.
Air quality in Clarksville
Air quality in Clarksville’s county has held roughly steady since 2020; its cleanest year on record was 2024 (median AQI 32). See the full air-quality history for Clarksville.
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| March | lettuce, peas, spinach, radishes | — |
| April | lettuce, spinach, radishes, tomatoes, peppers, beans, squash | lettuce, spinach, radishes |
| May | tomatoes, peppers, beans, squash | lettuce, peas, spinach, radishes |
| June | beans, squash | lettuce, peas, spinach, beans, summer squash, garlic |
| July | tomatoes, peppers, beans, squash | tomatoes, peppers, beans, summer squash, garlic |
| August | beans, squash, fall brassicas, carrots | tomatoes, peppers, beans, summer squash, winter squash |
| September | garlic (overwinter) | tomatoes, peppers, beans, summer squash, winter squash |
| October | garlic (overwinter) | tomatoes, peppers, beans, summer squash, winter squash, fall brassicas, carrots |
| November | — | fall brassicas, carrots |
A year in weather
In Clarksville, July runs warmest near 80°F and January coldest around 37°F, while May is the wettest month (5.6 inches) and September the driest (3.4 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 37° | 4.0″ | 8 |
| February | 41° | 4.5″ | 7 |
| March | 50° | 4.8″ | 8 |
| April | 59° | 5.0″ | 8 |
| May | 68° | 5.6″ | 8 |
| June | 76° | 4.7″ | 7 |
| July | 80° | 4.6″ | 7 |
| August | 79° | 3.7″ | 6 |
| September | 72° | 3.4″ | 6 |
| October | 60° | 4.3″ | 6 |
| November | 48° | 4.1″ | 6 |
| December | 41° | 4.9″ | 8 |
Regional context
Similar climates Adams, TN, Cedar Hill, TN, Slayden, TN
In Clarksville, NOAA NCEI 1991-2020 normals put January near 37°F and July near 80°F — a 42°F seasonal arc — with about 53.5 inches of precipitation over 84 rainy or snowy days.
No season owns Clarksville's rain: May reaches 5.6 inches across 8.3 days and September keeps 3.4 inches on 5.7, an even spread through Clarksville's year. That even rhythm groups Clarksville with places like Adams, TN, Cedar Hill, TN and Slayden, TN.
Clarksville reaches its last hard frost near April 3; that is the cue for peas, lettuce, spinach, and radishes. Tomatoes and peppers do best set out two weeks later in Clarksville, once nights clear the mid-40s°F. Frost returns to Clarksville near November 1, ending the tender-crop season. That date is a median: Clarksville freezes sooner in half of years.
Similar climates: Adams, TN, Cedar Hill, TN, Slayden, TN, Pleasant View, TN, Cumberland City, TN.
Frequently asked
- When does it freeze in Clarksville?
- Frost typically leaves Clarksville by April 3 and returns to Clarksville near November 1.
- What is the rainy season in Clarksville?
- May is the wettest month in Clarksville, about 5.6 inches on average; the year totals roughly 54 inches.
- What is the warmest month in Clarksville?
- July is Clarksville's warmest month, averaging about 80°F.
- What is the coldest month in Clarksville?
- Clarksville bottoms out in January, with a mean near 37°F.
- When can I start a vegetable garden in Clarksville?
- Clarksville's last frost (April 3) cues hardy greens; in Clarksville, hold heat-lovers two weeks past.
- How many rainy days does Clarksville get?
- Clarksville averages about 84 days with measurable rain or snow each year.
- What hardiness zone is Clarksville?
- Clarksville's USDA zone comes from its January mean (37°F); enter the ZIP on the USDA lookup for the number.
- What is the 10-day forecast for Clarksville?
- Clarksville's extended outlook — daily high and low temperatures and precipitation chances for each upcoming day — is in the daily forecast above.
- Will it rain this week in Clarksville?
- See this week's day-by-day rain chances for Clarksville in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Clarksville?
- Current conditions for Clarksville and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Clarksville forecast updated?
- The Clarksville forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Clarksville?
- Today's sunrise and sunset times for Clarksville are in the Almanac section above, along with civil dawn, civil dusk, and day length. Day length is longest near the summer solstice and shortest near the winter solstice.
- How accurate is the weather forecast for Clarksville?
- The next few days in Clarksville's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Clarksville sits at 36.6°N; its climate zone is humid subtropical (Köppen approximation).
ZIP codes in Clarksville
- 37040
- 37041
- 37042
- 37043
- 37044
- 42223