Frost Dates for 68467 — York, Nebraska

Half of springs at York, NE see their last 32°F night by April 22; only one in ten is past it by April 6, and one in ten still has one after May 5. Planting tender crops after April 29 leaves a 30% risk of a frost on them, after May 1 20%, and after May 5 10%. The 13 days between the even-odds date and the one-in-ten date is narrower than at 29% of the 68 Nebraska 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 1 one year in ten, and holds off past October 28 one year in ten. A hard freeze of 28°F follows 8 days later, around October 26; in spring the one-in-ten date for 28°F is April 26, 9 days before the 32°F one. The freeze-free season lasts 178 days in a typical year, longer than at 87% of the 68 Nebraska stations; it reaches 196 days one year in ten and falls short of 157 one year in ten. On average 141 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 2, and return around October 8. Severe cold of 16°F or below comes every winter, usually between November 21 and March 14.

July is the warmest month at York, NE, averaging 88°F by day and 66°F at night; January is the coldest at 34°F and 14°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 23% of years.

Warmth for growing adds up to 3,496 growing degree days a year (base 50°F), more than at 79% of the 68 Nebraska stations. 34% of them (1,205) have built up by the end of June, and July adds the most, 834. Precipitation totals 28.7 inches a year, most in May (5.0") and least in February (0.7"); May to September bring 64% of it.

The nearest other station, Aurora, NE, 21 miles west of York and 175 feet higher, has a last frost 1 day earlier (April 21), a first frost 3 days earlier (October 15), a season 2 days shorter.

The first measurable snow (0.1 inch or more) in York usually arrives around November 23, and the last of the season around March 20. Those are the middle dates across the winters of 1991–2020 at York, NE, 0.2 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 33 days after the last snow.

ZIP 68467 is under a mile from York, NE, which stands at 1,610 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 68467 in zone 5b, the band where the coldest night of the year averaged -15 to -10°F (-26.1 to -23.3°C) over 1991–2020; a zone describes winter lows, not frost dates.