Frost Dates for 65647 — Exeter, Missouri

Half of springs at Cassville, MO see their last 32°F night by April 14; only one in ten is past it by March 29, and one in ten still has one after April 30. Planting tender crops after April 21 leaves a 30% risk of a frost on them, after April 25 20%, and after April 30 10%. The 16 days between the even-odds date and the one-in-ten date is narrower than at 35% of the 158 Missouri stations behind this site's ZIP pages.

In fall the first 32°F night comes by October 26 in half of years, as early as October 11 one year in ten, and holds off past November 10 one year in ten. A hard freeze of 28°F follows 10 days later, around November 5; in spring the one-in-ten date for 28°F is April 19, 11 days before the 32°F one. The freeze-free season lasts 194 days in a typical year, shorter than at 50% of the 158 Missouri stations; it reaches 215 days one year in ten and falls short of 173 one year in ten. On average 110 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 26, and return around October 17. Severe cold of 16°F or below comes every winter, usually between December 4 and March 1.

July is the warmest month at Cassville, MO, averaging 87°F by day and 66°F at night; January is the coldest at 44°F and 23°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 83% of years.

Warmth for growing adds up to 3,961 growing degree days a year (base 50°F), fewer than at 59% of the 158 Missouri stations. 37% of them (1,450) have built up by the end of June, and July adds the most, 824. Precipitation totals 47.6 inches a year, most in May (6.2") and least in February (2.3"); May to September bring 49% of it.

The nearest other station, Washburn 5 W, MO, 9 miles southwest of Exeter, has a last frost 10 days earlier (April 4), a first frost 4 days later (October 30), a season 13 days longer.

The first measurable snow (0.1 inch or more) in Exeter usually arrives around January 14, and the last of the season around March 1. Those are the middle dates across the winters of 1991–2020 at Cassville, MO, 6.1 miles away: half of years saw snow earlier, half later. Snow fell in 71% of those winters. The last 32°F night of spring typically comes 44 days after the last snow.

ZIP 65647 is 6 miles from Cassville, MO, which stands at 1,376 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 65625 (Cassville). The 2023 USDA Plant Hardiness Zone Map lists ZIP 65647 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.