Frost Dates for 47660 — Oakland City, Indiana

Half of springs at Stendal, IN see their last 32°F night by April 6; only one in ten is past it by March 21, and one in ten still has one after April 23. Planting tender crops after April 13 leaves a 30% risk of a frost on them, after April 17 20%, and after April 23 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 30 in half of years, as early as October 16 one year in ten, and holds off past November 15 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 13, 10 days before the 32°F one. The freeze-free season lasts 206 days in a typical year, longer than at 93% of the 125 Indiana stations; it reaches 227 days one year in ten and falls short of 184 one year in ten. On average 91 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 18, and return around October 20. Severe cold of 16°F or below comes every winter, usually between December 13 and February 24.

July is the warmest month at Stendal, IN, averaging 85°F by day and 67°F at night; January is the coldest at 39°F and 24°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 68% of years.

Warmth for growing adds up to 3,944 growing degree days a year (base 50°F), more than at 82% of the 125 Indiana stations. 38% of them (1,487) have built up by the end of June, and July adds the most, 811. Precipitation totals 52.4 inches a year, most in May (5.9") and least in February (3.4"); May to September bring 44% of it.

The nearest other station, Petersburg 61 Brg, IN, 11 miles northeast of Oakland City and 163 feet lower, has a last frost 14 days later (April 20), a first frost 8 days earlier (October 22), a season 20 days shorter.

The first measurable snow (0.1 inch or more) in Oakland City usually arrives around December 24, and the last of the season around February 24. Those are the middle dates across the winters of 1991–2020 at Petersburg 61 Brg, IN, 10.6 miles away: half of years saw snow earlier, half later. Snow fell in 94% of those winters. The last 32°F night of spring typically comes 41 days after the last snow.

ZIP 47660 is 10 miles from Stendal, IN, which stands at 635 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 1 other ZIP code shares the station; its figures are presented in full for 47542 (Huntingburg). The 2023 USDA Plant Hardiness Zone Map lists ZIP 47660 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.