Frost Dates for 67835 — Cimarron, Kansas

Half of springs at Cimarron, KS see their last 32°F night by April 20; only one in ten is past it by April 6, and one in ten still has one after May 3. Planting tender crops after April 26 leaves a 30% risk of a frost on them, after April 30 20%, and after May 3 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 7 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 26, 7 days before the 32°F one. The freeze-free season lasts 182 days in a typical year, shorter than at 67% of the 110 Kansas stations; it reaches 201 days one year in ten and falls short of 162 one year in ten. On average 140 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 April 30, and return around October 12. Severe cold of 16°F or below comes every winter, usually between November 23 and March 8.

July is the warmest month at Cimarron, KS, averaging 93°F by day and 67°F at night; January is the coldest at 45°F and 18°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 19% of years.

Warmth for growing adds up to 4,107 growing degree days a year (base 50°F), more than at 53% of the 110 Kansas stations. 35% of them (1,447) have built up by the end of June, and July adds the most, 924. Precipitation totals 21.7 inches a year, most in June (3.5") and least in January (0.6"); May to September bring 64% of it.

The nearest other station, Dodge City, KS, 21 miles east of Cimarron, has a last frost 1 day later (April 21), the same first-frost date, a season 3 days shorter.

The first measurable snow (0.1 inch or more) in Cimarron usually arrives around November 24, and the last of the season around March 20. Those are the middle dates across the winters of 1991–2020 at Cimarron, KS, 2.6 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 31 days after the last snow.

ZIP 67835 is 3 miles from Cimarron, KS, which stands at 2,703 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 67835 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.