Frost Dates for 69130 — Cozad, Nebraska

Half of springs at Gothenburg, NE see their last 32°F night by April 30; only one in ten is past it by April 16, and one in ten still has one after May 13. Planting tender crops after May 5 leaves a 30% risk of a frost on them, after May 8 20%, and after May 13 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 9 in half of years, as early as September 27 one year in ten, and holds off past October 22 one year in ten. A hard freeze of 28°F follows 10 days later, around October 19; in spring the one-in-ten date for 28°F is May 3, 10 days before the 32°F one. The freeze-free season lasts 162 days in a typical year, shorter than at 59% of the 68 Nebraska stations; it reaches 179 days one year in ten and falls short of 143 one year in ten. On average 155 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 May 9, and return around October 1. Severe cold of 16°F or below comes every winter, usually between November 13 and March 21.

July is the warmest month at Gothenburg, NE, averaging 88°F by day and 63°F at night; January is the coldest at 39°F and 16°F. A freezing night is all but certain in every month from October to April (a 90% chance or more). From June to August the chance of a 32°F night stays under 10% each month. In spring, May still brings one in 49% of years.

Warmth for growing adds up to 3,229 growing degree days a year (base 50°F), more than at 50% of the 68 Nebraska stations. 34% of them (1,097) have built up by the end of June, and July adds the most, 790. Precipitation totals 24.2 inches a year, most in May (4.1") and least in January (0.4"); May to September bring 67% of it.

The nearest other station, Canaday Steam Plt, NE, 19 miles southeast of Cozad and 241 feet lower, has a last frost 4 days earlier (April 26), a first frost 4 days later (October 13), a season 7 days longer.

The first measurable snow (0.1 inch or more) in Cozad usually arrives around November 4, and the last of the season around April 14. Those are the middle dates across the winters of 1991–2020 at Eustis 2 NW, NE, 13.2 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 16 days after the last snow.

ZIP 69130 is 10 miles from Gothenburg, NE, which stands at 2,603 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 1 other ZIP code shares the station. The 2023 USDA Plant Hardiness Zone Map lists ZIP 69130 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.