Frost Dates for 67152 — Wellington, Kansas

Half of springs at Wellington, KS see their last 32°F night by April 15; 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 15 days between the even-odds date and the one-in-ten date is wider than at 57% of the 110 Kansas stations behind this site's ZIP pages.

In fall the first 32°F night comes by October 29 in half of years, as early as October 14 one year in ten, and holds off past November 10 one year in ten. A hard freeze of 28°F follows 7 days later, around November 5; in spring the one-in-ten date for 28°F is April 20, 10 days before the 32°F one. The freeze-free season lasts 195 days in a typical year, longer than at 72% of the 110 Kansas stations; it reaches 217 days one year in ten and falls short of 174 one year in ten. On average 108 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 9 days longer, to about April 24, and return around October 18. Severe cold of 16°F or below comes every winter, usually between December 4 and February 28.

July is the warmest month at Wellington, KS, averaging 92°F by day and 69°F at night; January is the coldest at 44°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 83% of years.

Warmth for growing adds up to 4,429 growing degree days a year (base 50°F), more than at 85% of the 110 Kansas stations. 35% of them (1,567) have built up by the end of June, and July adds the most, 947. Precipitation totals 36.2 inches a year, most in May (5.3") and least in January (1.0"); May to September bring 60% of it.

The nearest other station, Haysville 3SE, KS, 18 miles north of Wellington, has a last frost 1 day earlier (April 14), a first frost 7 days earlier (October 22), a season 6 days shorter.

The first measurable snow (0.1 inch or more) in Wellington usually arrives around December 9, and the last of the season around February 28. Those are the middle dates across the winters of 1991–2020 at Wellington, KS, 0.4 miles away: half of years saw snow earlier, half later. Snow fell in 87% of those winters. The last 32°F night of spring typically comes 46 days after the last snow.

ZIP 67152 is under a mile from Wellington, KS, which stands at 1,224 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 67152 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.