Frost Dates for 65536 — Lebanon, Missouri

Half of springs at Lebanon 2W, MO see their last 32°F night by April 17; 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 24 leaves a 30% risk of a frost on them, after April 28 20%, and after May 2 10%. The 15 days between the even-odds date and the one-in-ten date is narrower than at 54% of the 158 Missouri stations behind this site's ZIP pages.

In fall the first 32°F night comes by October 21 in half of years, as early as October 7 one year in ten, and holds off past November 3 one year in ten. A hard freeze of 28°F follows 9 days later, around October 30; in spring the one-in-ten date for 28°F is April 22, 10 days before the 32°F one. The freeze-free season lasts 187 days in a typical year, shorter than at 73% of the 158 Missouri stations; it reaches 211 days one year in ten and falls short of 163 one year in ten. On average 95 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 29, and return around October 11. Severe cold of 16°F or below comes every winter, usually between December 1 and March 4.

July is the warmest month at Lebanon 2W, MO, averaging 88°F by day and 67°F at night; January is the coldest at 43°F and 22°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 14% of years.

Warmth for growing adds up to 4,080 growing degree days a year (base 50°F), more than at 53% of the 158 Missouri stations. 37% of them (1,503) have built up by the end of June, and July adds the most, 860. Precipitation totals 46.0 inches a year, most in May (5.9") and least in December (2.5"); May to September bring 50% of it.

The nearest other station, Grovespring 1NE, MO, 19 miles south of Lebanon, has a last frost 2 days earlier (April 15), a first frost 1 day later (October 22), a season 1 day longer.

The first measurable snow (0.1 inch or more) in Lebanon usually arrives around December 13, and the last of the season around February 8. Those are the middle dates across the winters of 1991–2020 at Lebanon 2W, MO, 2.6 miles away: half of years saw snow earlier, half later. Snow fell in 88% of those winters. The last 32°F night of spring typically comes 68 days after the last snow.

ZIP 65536 is 3 miles from Lebanon 2W, MO, which stands at 1,246 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 65536 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.