Frost Dates for 68361 — Geneva, Nebraska

Half of springs at Geneva, NE 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 27 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 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 2 one year in ten, and holds off past October 30 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 23, 10 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 197 days one year in ten and falls short of 159 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 30, and return around October 9. Severe cold of 16°F or below comes every winter, usually between November 22 and March 13.

July is the warmest month at Geneva, NE, averaging 87°F by day and 66°F at night; January is the coldest at 37°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 17% of years.

Warmth for growing adds up to 3,625 growing degree days a year (base 50°F), more than at 93% of the 68 Nebraska stations. 36% of them (1,300) have built up by the end of June, and July adds the most, 812. Precipitation totals 28.4 inches a year, most in May (4.9") and least in January (0.6"); May to September bring 68% of it.

The nearest other station, York, NE, 24 miles north of Geneva, has a last frost 2 days later (April 22), the same first-frost date.

The first measurable snow (0.1 inch or more) in Geneva usually arrives around December 8, and the last of the season around March 11. Those are the middle dates across the winters of 1991–2020 at Geneva, NE, 1.1 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 40 days after the last snow.

ZIP 68361 is 1 mile from Geneva, NE, which stands at 1,630 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 68361 in zone 6a, the band where the coldest night of the year averaged -10 to -5°F (-23.3 to -20.6°C) over 1991–2020; a zone describes winter lows, not frost dates.