Frost Dates for 67420 — Beloit, Kansas

Half of springs at Beloit, KS see their last 32°F night by April 19; only one in ten is past it by April 5, and one in ten still has one after May 2. Planting tender crops after April 24 leaves a 30% risk of a frost on them, after April 28 20%, and after May 2 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 19 in half of years, as early as October 4 one year in ten, and holds off past October 31 one year in ten. A hard freeze of 28°F follows 8 days later, around October 27; in spring the one-in-ten date for 28°F is April 23, 9 days before the 32°F one. The freeze-free season lasts 181 days in a typical year, shorter than at 69% of the 110 Kansas stations; it reaches 201 days one year in ten and falls short of 161 one year in ten. On average 131 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 29, and return around October 11. Severe cold of 16°F or below comes every winter, usually between November 27 and March 10.

July is the warmest month at Beloit, KS, averaging 92°F by day and 68°F at night; January is the coldest at 40°F and 17°F. A freezing night is all but certain in every month from October 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 13% of years.

Warmth for growing adds up to 4,070 growing degree days a year (base 50°F), fewer than at 56% of the 110 Kansas stations. 35% of them (1,426) have built up by the end of June, and July adds the most, 933. Precipitation totals 29.1 inches a year, most in July (4.8") and least in January (0.7"); May to September bring 66% of it.

The nearest other station, Concordia Municipal Airport, KS, 24 miles east of Beloit, has a last frost 1 day earlier (April 18), the same first-frost date, a season 2 days longer.

The first measurable snow (0.1 inch or more) in Beloit usually arrives around December 9, and the last of the season around March 6. Those are the middle dates across the winters of 1991–2020 at Beloit, KS, 2.2 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 44 days after the last snow.

ZIP 67420 is 2 miles from Beloit, KS, which stands at 1,391 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 67420 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.