Frost Dates for 38571 — Crossville, Tennessee

Half of springs at Crossville Ed & Research, TN see their last 32°F night by April 19; only one in ten is past it by March 31, and one in ten still has one after May 7. Planting tender crops after April 28 leaves a 30% risk of a frost on them, after May 2 20%, and after May 7 10%. The 18 days between the even-odds date and the one-in-ten date is wider than at 67% of the 144 Tennessee stations behind this site's ZIP pages.

In fall the first 32°F night comes by October 22 in half of years, as early as October 8 one year in ten, and holds off past November 1 one year in ten. A hard freeze of 28°F follows 8 days later, around October 30; in spring the one-in-ten date for 28°F is April 23, 14 days before the 32°F one. The freeze-free season lasts 185 days in a typical year, shorter than at 89% of the 144 Tennessee stations; it reaches 209 days one year in ten and falls short of 162 one year in ten. On average 96 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 13 days longer, to about May 2, and return around October 12. Severe cold of 16°F or below comes every winter, usually between December 5 and February 28.

July is the warmest month at Crossville Ed & Research, TN, averaging 82°F by day and 63°F at night; January is the coldest at 42°F and 25°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 87% of years and May still brings one in 23% of years.

Warmth for growing adds up to 3,303 growing degree days a year (base 50°F), fewer than at 98% of the 144 Tennessee stations. 37% of them (1,206) have built up by the end of June, and July adds the most, 697. Precipitation totals 62.7 inches a year, most in December (6.5") and least in October (3.7"); May to September bring 39% of it.

The nearest other station, Crossville Mem Airport, TN, 6 miles south of Crossville, has a last frost 3 days earlier (April 16), a first frost 1 day later (October 23), a season 4 days longer.

The first measurable snow (0.1 inch or more) in Crossville usually arrives around December 18, and the last of the season around March 3. Those are the middle dates across the winters of 1991–2020 at Crossville Ed & Research, TN, 2.9 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 47 days after the last snow.

ZIP 38571 is 3 miles from Crossville Ed & Research, TN, which stands at 1,810 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 38571 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.