Frost Dates for 65711 — Mountain Grove, Missouri

Half of springs at Mountain Grove 2 N, MO see their last 32°F night by April 11; only one in ten is past it by March 25, and one in ten still has one after April 29. Planting tender crops after April 18 leaves a 30% risk of a frost on them, after April 24 20%, and after April 29 10%. The 18 days between the even-odds date and the one-in-ten date is wider than at 82% of the 158 Missouri stations behind this site's ZIP pages.

In fall the first 32°F night comes by October 28 in half of years, as early as October 15 one year in ten, and holds off past November 9 one year in ten. A hard freeze of 28°F follows 8 days later, around November 5; in spring the one-in-ten date for 28°F is April 15, 14 days before the 32°F one. The freeze-free season lasts 196 days in a typical year, longer than at 54% of the 158 Missouri stations; it reaches 218 days one year in ten and falls short of 173 one year in ten. On average 103 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 14 days longer, to about April 25, and return around October 18. Severe cold of 16°F or below comes every winter, usually between December 7 and March 1.

July is the warmest month at Mountain Grove 2 N, MO, averaging 87°F by day and 67°F at night; January is the coldest at 41°F and 22°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 76% of years.

Warmth for growing adds up to 3,919 growing degree days a year (base 50°F), fewer than at 64% of the 158 Missouri stations. 36% of them (1,408) have built up by the end of June, and July adds the most, 831. Precipitation totals 45.8 inches a year, most in May (5.4") and least in February (2.7"); May to September bring 46% of it.

The nearest other station, Mansfield, MO, 17 miles west of Mountain Grove, has the same 50% last-frost date, a first frost 2 days earlier (October 26), a season 1 day longer.

The first measurable snow (0.1 inch or more) in Mountain Grove usually arrives around December 17, and the last of the season around March 1. Those are the middle dates across the winters of 1991–2020 at Mountain Grove 2 N, MO, 1.7 miles away: half of years saw snow earlier, half later. Snow fell in 96% of those winters. The last 32°F night of spring typically comes 41 days after the last snow.

ZIP 65711 is 2 miles from Mountain Grove 2 N, MO, which stands at 1,466 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 1 other ZIP code shares the station. The 2023 USDA Plant Hardiness Zone Map lists ZIP 65711 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.