Frost Dates for 67663 — Plainville, Kansas

Half of springs at Plainville 4WNW, KS see their last 32°F night by April 23; only one in ten is past it by April 7, and one in ten still has one after May 6. Planting tender crops after April 30 leaves a 30% risk of a frost on them, after May 2 20%, and after May 6 10%. The 13 days between the even-odds date and the one-in-ten date is narrower than at 65% of the 110 Kansas stations behind this site's ZIP pages.

In fall the first 32°F night comes by October 20 in half of years, as early as October 3 one year in ten, and holds off past November 1 one year in ten. A hard freeze of 28°F follows 9 days later, around October 29; in spring the one-in-ten date for 28°F is April 30, 6 days before the 32°F one. The freeze-free season lasts 178 days in a typical year, shorter than at 78% of the 110 Kansas stations; it reaches 198 days one year in ten and falls short of 158 one year in ten. On average 142 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 10 days longer, to about May 3, and return around October 10. Severe cold of 16°F or below comes every winter, usually between November 24 and March 12.

July is the warmest month at Plainville 4WNW, KS, averaging 91°F by day and 65°F at night; January is the coldest at 41°F and 17°F. A freezing night is all but certain in every month from November to April (a 90% chance or more). From June to September the chance of a 32°F night stays under 10% each month. In spring, May still brings one in 24% of years.

Warmth for growing adds up to 3,749 growing degree days a year (base 50°F), fewer than at 89% of the 110 Kansas stations. 34% of them (1,262) have built up by the end of June, and July adds the most, 876. Precipitation totals 26.1 inches a year, most in May (4.1") and least in January (0.6"); May to September bring 66% of it.

The nearest other station, Hays, KS, 24 miles south of Plainville and 204 feet lower, has a last frost 4 days earlier (April 19), a first frost 2 days later (October 22), a season 6 days longer.

The first measurable snow (0.1 inch or more) in Plainville usually arrives around November 20, and the last of the season around March 21. Those are the middle dates across the winters of 1991–2020 at Plainville 4WNW, KS, 4.1 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 33 days after the last snow.

ZIP 67663 is 4 miles from Plainville 4WNW, KS, which stands at 2,194 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 67663 in zone 6a, the band where the coldest night of the year averaged -10 to -5°F (-23.3 to -20.6°C) over 1991–2020; a zone describes winter lows, not frost dates.