Frost Dates for 38553 — Clarkrange, Tennessee

Half of springs at Allardt, TN see their last 32°F night by April 17; only one in ten is past it by April 1, and one in ten still has one after May 7. Planting tender crops after April 26 leaves a 30% risk of a frost on them, after April 30 20%, and after May 7 10%. The 20 days between the even-odds date and the one-in-ten date is wider than at 95% of the 144 Tennessee stations behind this site's ZIP pages.

In fall the first 32°F night comes by October 23 in half of years, as early as October 9 one year in ten, and holds off past November 4 one year in ten. A hard freeze of 28°F follows 10 days later, around November 2; in spring the one-in-ten date for 28°F is April 22, 15 days before the 32°F one. The freeze-free season lasts 188 days in a typical year, shorter than at 85% of the 144 Tennessee stations; it reaches 210 days one year in ten and falls short of 164 one year in ten. On average 90 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 15 days longer, to about May 2, and return around October 14. Severe cold of 16°F or below comes every winter, usually between December 6 and February 27.

July is the warmest month at Allardt, TN, averaging 83°F by day and 65°F at night; January is the coldest at 44°F and 27°F. A freezing night is all but certain in every month from November to March (a 90% chance or more). From June to September the chance of a 32°F night stays under 10% each month. In spring, April still brings one in 88% of years and May still brings one in 20% of years.

Warmth for growing adds up to 3,645 growing degree days a year (base 50°F), fewer than at 92% of the 144 Tennessee stations. 37% of them (1,364) have built up by the end of June, and July adds the most, 728. Precipitation totals 59.9 inches a year, most in March (5.8") and least in October (3.2"); May to September bring 42% of it.

The nearest other station, Monterey, TN, 15 miles west of Clarkrange and 215 feet higher, has a last frost 7 days earlier (April 10), a first frost 7 days later (October 30), a season 15 days longer.

The first measurable snow (0.1 inch or more) in Clarkrange usually arrives around December 23, and the last of the season around March 4. Those are the middle dates across the winters of 1991–2020 at Allardt, TN, 14 miles away: half of years saw snow earlier, half later. Every one of those winters saw snow. The last 32°F night of spring typically comes 44 days after the last snow.

ZIP 38553 is 14 miles from Allardt, TN, which stands at 1,645 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 38553 in zone 7a, the band where the coldest night of the year averaged 0 to 5°F (-17.8 to -15.0°C) over 1991–2020; a zone describes winter lows, not frost dates.