Clarksville, Tennessee climate: Normal weather by month, frost dates and records
Clarksville's normal year runs from 28°F January nights to 89°F July afternoons, with 47.2 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 14.7°C, January lows of −2°C, July highs of 31°C, 1,199 mm of precipitation a year.
- NOAA stationClarksville Outlaw Airport
- Station IDUSW00003894
- Location36.62°N 87.42°W
- Elevation560 ft (171 m)
- Population185,690
On October 22, the normal high in Clarksville is 69°F and the normal low 45°F, and the chance of measurable rain or snow is 33%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Clarksville.
- Jan 46° 28°
- Feb 51° 31°
- Mar 60° 38°
- Apr 70° 47°
- May 78° 57°
- Jun 86° 64°
- Jul 89° 68°
- Aug 89° 66°
- Sep 82° 59°
- Oct 72° 47°
- Nov 59° 37°
- Dec 49° 31°
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 Clarksville each month?
July is the warmest month, with normal highs of 89°F; January the coldest, with normal lows of 28°F. The most precipitation falls in May (4.90 in), the least in August (2.90 in).
Each month has its own page with the day-by-day normals, the month's records and its recent years:
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 46°F | 28°F | 37.0°F | 3.28 | 10 | <1 | 22 | 9 h 50 min |
| February | 51°F | 31°F | 40.7°F | 3.87 | 11 | <1 | 17 | 10 h 50 min |
| March | 60°F | 38°F | 48.9°F | 4.32 | 11 | <1 | 10 | 11 h 50 min |
| April | 70°F | 47°F | 58.4°F | 4.55 | 11 | <1 | 2 | 13 h 10 min |
| May | 78°F | 57°F | 67.3°F | 4.90 | 13 | 1 | <1 | 14 h 10 min |
| June | 86°F | 64°F | 75.0°F | 3.65 | 10 | 8 | <1 | 14 h 40 min |
| July | 89°F | 68°F | 78.2°F | 3.74 | 11 | 14 | <1 | 14 h 30 min |
| August | 89°F | 66°F | 77.4°F | 2.90 | 10 | 14 | <1 | 13 h 40 min |
| September | 82°F | 59°F | 70.6°F | 3.47 | 9 | 6 | <1 | 12 h 30 min |
| October | 72°F | 47°F | 59.3°F | 4.13 | 10 | <1 | 2 | 11 h 20 min |
| November | 59°F | 37°F | 48.1°F | 4.04 | 10 | <1 | 11 | 10 h 20 min |
| December | 49°F | 31°F | 39.9°F | 4.36 | 12 | <1 | 18 | 9 h 40 min |
| Year (annual) | 69°F | 48°F | 58.4°F | 47.21 | 128 | 43 | 80 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 8°C | −2°C | 2.8°C | 83 mm |
| February | 10°C | −1°C | 4.8°C | 98 mm |
| March | 16°C | 3°C | 9.4°C | 110 mm |
| April | 21°C | 8°C | 14.7°C | 116 mm |
| May | 25°C | 14°C | 19.6°C | 124 mm |
| June | 30°C | 18°C | 23.9°C | 93 mm |
| July | 31°C | 20°C | 25.7°C | 95 mm |
| August | 32°C | 19°C | 25.2°C | 74 mm |
| September | 28°C | 15°C | 21.4°C | 88 mm |
| October | 22°C | 8°C | 15.2°C | 105 mm |
| November | 15°C | 3°C | 8.9°C | 103 mm |
| December | 9°C | −1°C | 4.4°C | 111 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. Clarksville's own co-op station Clarksville Wastewater Treatment Plant does: 1 inches of snow in a normal year (see the other stations below).
Source: NOAA NCEI 1991-2020 monthly normals, station USW00003894; 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 Clarksville?
Normal highs sit between 65°F and 85°F in April, May, September and October. Of those, September has the fewest days with rain (9).
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 USW00003894.
When is the last frost in Clarksville?
In Clarksville, the last spring frost (32°F) comes after April 6 in half of years and after April 23 in one year in ten; the first autumn frost comes before October 28 in half of years and before October 15 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 61 year in 10 after April 23; 9 in 10 after March 20
- First autumn frost, half of years before
- October 281 year in 10 before October 15; 9 in 10 before November 9
NOAA puts the median frost-free season at 204 days, and the season without a hard freeze (28°F) at 227 days.
A hard freeze (28°F) comes after March 25 in half of springs and before November 7 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Clarksville in zones 7a to 7b across its 4 ZIP code areas (7b in 37042, the largest). By the map's own method, the average of each year's coldest night over 1991-2020, Clarksville's NOAA station is in zone 7b: the coldest night of a typical year reaches 6°F (18 complete years).
Frost dates for every NOAA station in Tennessee · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USW00003894; 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.
What hardiness zone is each Clarksville ZIP code in?
The USDA's 2023 map gives each ZIP code area one zone. Clarksville's 4 ZIP code areas run from zone 7a to 7b: 1 in 7a and 3 in 7b. Each ZIP's frost dates are in the frost tool.
Source: USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; ZIP areas in the place: Census Bureau 2020 ZCTA-to-place relationship file. A ZIP area counts when at least a tenth of its land (and 0.5 km²) lies in the place.
How hot and how cold does it get in Clarksville?
In a normal year in Clarksville, 43 days a year reach 90°F (1 of them 100°F or more), 80 nights fall to 32°F or colder and 128 days bring measurable precipitation.
- Days at 90°F or more
- 43a normal year
- Days at 100°F or more
- 1a normal year
- Nights at 32°F or colder
- 80a normal year
- Days that stay below freezing
- 10high of 32°F or less
- Days with 0.01 inch of precipitation
- 128a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USW00003894.
How sunny is Clarksville?
Over a year 75% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Clarksville, 4.3 kWh per square metre a day. August is the sunniest month (81%) and February the cloudiest (63%). Among the 459 U.S. places of 50,000 or more, that ranks tied 304th (with 25 others) in sunshine.
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 66% | 2.2 |
| February | 63% | 2.8 |
| March | 67% | 3.9 |
| April | 73% | 5.2 |
| May | 75% | 5.8 |
| June | 81% | 6.4 |
| July | 81% | 6.2 |
| August | 81% | 5.6 |
| September | 80% | 4.8 |
| October | 76% | 3.6 |
| November | 73% | 2.6 |
| December | 64% | 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 Clarksville need?
A normal year in Clarksville brings 3,886 heating degree days, 28% fewer than the median U.S. place (5,373), and 1,510 cooling degree days, 66% more than 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 4,504 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 870 | 0 |
| February | 682 | 1 |
| March | 504 | 6 |
| April | 233 | 34 |
| May | 65 | 134 |
| June | 2 | 302 |
| July | 0 | 409 |
| August | 0 | 386 |
| September | 28 | 194 |
| October | 216 | 40 |
| November | 510 | 3 |
| December | 777 | 0 |
| Year (annual) | 3,886 | 1,510 |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00003894. 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 Clarksville been warmer than normal lately?
2025 averaged 60.8°F, 2.4°F above the 1991-2020 normal of 58.4°F. 3 of the 3 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 59.3°F | +0.9°F | 50.91 |
| 2022 | 59.7°F | +1.3°F | 44.41 |
| 2025 | 60.8°F | +2.4°F | 50.95 |
Source: observed years: ACIS, station USW00003894. A year counts only with all twelve months complete.
How does Clarksville's climate compare?
Clarksville is warmer than 56 of the other 115 places with their own NOAA record in Tennessee, and wetter than 6. Across the 7,247 U.S. stations with normals, its annual mean of 58.4°F is warmer than 70%.
In the Köppen classification computed from these normals, Clarksville 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 Clarksville share this climate record?
6 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.
- Fort Campbell North, KY11,483 people · 4 mi NW
- Oak Grove, KY7,973 people · 3 mi N
- Pembroke, KY887 people · 11 mi N
- Trenton, KY334 people · 11 mi NE
- Fairview, KY205 people · 16 mi N
- LaFayette, KY173 people · 13 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.
What do Clarksville's other NOAA stations record?
2 more NOAA stations keep 1991-2020 normals in or near Clarksville. This page uses Clarksville Outlaw Airport; the others differ by site and elevation, and the linked ones have pages of their own:
| Station | From this station | Elevation | Year | Jan low | Jul high | Precip. | Snow | Last frost |
|---|---|---|---|---|---|---|---|---|
| Clarksville Wastewater Treatment Plant USC00401790 | 7 mi SE | 402 ft | 59.2°F | 28°F | 90°F | 53.5 | 1 | April 3 |
| Clarksville No.2 USC00401795 | 10 mi SE | 496 ft | 58.2°F | 27°F | 89°F | 53.3 | – | April 10 |
Source: NOAA NCEI 1991-2020 normals for each station. Last frost: the median last spring date of 32°F.
Questions about Clarksville's climate
What is the coldest month in Clarksville?
January, with a normal high of 46°F and a normal low of 28°F. The warmest is July (89°F by day, 68°F at night).
Does it snow in Clarksville?
Rarely. NOAA publishes no 1991-2020 snowfall normal for Clarksville's NOAA station; Clarksville's own co-op station Clarksville Wastewater Treatment Plant records 1 inches of snow in a normal year.
What is the rainiest month in Clarksville?
May, with 4.90 in of precipitation in a normal year; the driest is August with 2.90 in.
What plant hardiness zone is Clarksville in?
The USDA's 2023 map puts Clarksville in zones 7a to 7b across its 4 ZIP code areas (7b in 37042, the largest). By the same method at Clarksville's NOAA station, the coldest night of a typical year reaches 6°F (18 years, 1991-2020): zone 7b.
How late can frost come in Clarksville?
In half of years the last 32°F night comes after April 6; in one year in ten it comes after April 23. Waiting until April 23 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Clarksville in OctoberThis month day by day, its records and recent years
- Tennessee climateThe statewide normals and every place in the state
- Clarksville Wastewater Treatment Plant, TN7 miles from this station, 59.2°F a year
- Hopkinsville, KY17 miles from this station, 58.3°F a year
- Elkton, KY19 miles from this station, 57.4°F a year
- Cheatham Lock and Dam, TN24 miles from this station, 58.7°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made