Frost Dates for 37043 — Clarksville, Tennessee

Half of springs at Clarksville No.2, TN see their last 32°F night by April 10; only one in ten is past it by March 26, and one in ten still has one after April 26. Planting tender crops after April 17 leaves a 30% risk of a frost on them, after April 21 20%, and after April 26 10%. The 16 days between the even-odds date and the one-in-ten date is narrower than at 53% of the 144 Tennessee stations behind this site's ZIP pages.

In fall the first 32°F night comes by October 30 in half of years, as early as October 17 one year in ten, and holds off past November 11 one year in ten. A hard freeze of 28°F follows 10 days later, around November 9; in spring the one-in-ten date for 28°F is April 14, 12 days before the 32°F one. The freeze-free season lasts 203 days in a typical year, shorter than at 52% of the 144 Tennessee stations; it reaches 223 days one year in ten and falls short of 181 one year in ten. On average 87 nights a year drop to 32°F or below. Nights of 36°F, when frost can still settle on leaves in low, open spots, continue 11 days longer, to about April 21, and return around October 21. Severe cold of 16°F or below comes in 99% of winters, usually between December 24 and February 14.

July is the warmest month at Clarksville No.2, TN, averaging 89°F by day and 68°F at night; January is the coldest at 47°F and 27°F. A freezing night is all but certain in every month from November to March (a 90% chance or more). From May to September the chance of a 32°F night stays under 10% each month. In spring, April still brings one in 77% of years.

Warmth for growing adds up to 4,430 growing degree days a year (base 50°F), fewer than at 53% of the 144 Tennessee stations. 37% of them (1,623) have built up by the end of June, and July adds the most, 883. Precipitation totals 53.4 inches a year, most in March (5.7") and least in August (3.3"); May to September bring 40% of it.

The nearest other station, Clarksville Wwtp, TN, 5 miles northwest of Clarksville, has a last frost 7 days earlier (April 3), a first frost 2 days later (November 1), a season 9 days longer.

Measurable snow is rare here: only 8 of 22 winters from 1991 to 2020 recorded 0.1 inch or more at Clarksville Wwtp, TN, 5.2 miles away, so there is no typical first-snow date to plan around.

ZIP 37043 is 4 miles from Clarksville No.2, TN, which stands at 496 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 37043 in zone 7b, the band where the coldest night of the year averaged 5 to 10°F (-15.0 to -12.2°C) over 1991–2020; a zone describes winter lows, not frost dates.