Frost Dates for 47553 — Loogootee, Indiana

Half of springs at Shoals 8 S, IN see their last 32°F night by April 15; only one in ten is past it by March 31, and one in ten still has one after May 2. Planting tender crops after April 22 leaves a 30% risk of a frost on them, after April 27 20%, and after May 2 10%. The 17 days between the even-odds date and the one-in-ten date is wider than at 66% of the 125 Indiana 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 10 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 19, 13 days before the 32°F one. The freeze-free season lasts 189 days in a typical year, longer than at 70% of the 125 Indiana stations; it reaches 210 days one year in ten and falls short of 166 one year in ten. On average 116 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 12 days longer, to about April 27, and return around October 14. Severe cold of 16°F or below comes every winter, usually between December 8 and February 28.

July is the warmest month at Shoals 8 S, IN, averaging 88°F by day and 66°F at night; January is the coldest at 41°F and 23°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 13% of years.

Warmth for growing adds up to 4,047 growing degree days a year (base 50°F), more than at 86% of the 125 Indiana stations. 37% of them (1,515) have built up by the end of June, and July adds the most, 835. Precipitation totals 49.9 inches a year, most in May (6.1") and least in August (3.0"); May to September bring 44% of it.

The nearest other station, Crane Nsa, IN, 12 miles north of Loogootee and 253 feet higher, has a last frost 6 days earlier (April 9), a first frost 8 days later (October 31), a season 13 days longer.

The first measurable snow (0.1 inch or more) in Loogootee usually arrives around December 14, and the last of the season around March 4. Those are the middle dates across the winters of 1991–2020 at Shoals 8 S, IN, 11.8 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 42 days after the last snow.

ZIP 47553 is 12 miles from Shoals 8 S, IN, which stands at 477 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 2 other ZIP codes share the station; its figures are presented in full for 47546 (Jasper). The 2023 USDA Plant Hardiness Zone Map lists ZIP 47553 in zone 6b, the band where the coldest night of the year averaged -5 to 0°F (-20.6 to -17.8°C) over 1991–2020; a zone describes winter lows, not frost dates.