Frost Dates for 67543 — Haven, Kansas

Half of springs at Hutchinson Municipal Airport, KS see their last 32°F night by April 21; only one in ten is past it by April 6, and one in ten still has one after May 4. Planting tender crops after April 27 leaves a 30% risk of a frost on them, after April 30 20%, and after May 4 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 18 in half of years, as early as October 2 one year in ten, and holds off past October 31 one year in ten. A hard freeze of 28°F follows 9 days later, around October 27; in spring the one-in-ten date for 28°F is April 25, 9 days before the 32°F one. The freeze-free season lasts 180 days in a typical year, shorter than at 73% of the 110 Kansas stations; it reaches 200 days one year in ten and falls short of 159 one year in ten. On average 124 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 30, and return around October 9. Severe cold of 16°F or below comes every winter, usually between November 23 and March 5.

July is the warmest month at Hutchinson Municipal Airport, KS, averaging 93°F by day and 68°F at night; January is the coldest at 44°F and 20°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 18% of years.

Warmth for growing adds up to 4,307 growing degree days a year (base 50°F), more than at 75% of the 110 Kansas stations. 36% of them (1,562) have built up by the end of June, and July adds the most, 945. Precipitation totals 28.3 inches a year, most in May (4.8") and least in January (0.6"); May to September bring 63% of it.

The nearest other station, Hutchinson, KS, 15 miles northwest of Haven, has a last frost 3 days earlier (April 18), a first frost 3 days later (October 21), a season 6 days longer.

The first measurable snow (0.1 inch or more) in Haven usually arrives around December 5, and the last of the season around March 4. Those are the middle dates across the winters of 1991–2020 at Mt Hope, KS, 7.3 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 48 days after the last snow.

ZIP 67543 is 12 miles from Hutchinson Municipal Airport, KS, which stands at 1,543 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 67543 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.