Frost Dates for 68305 — Auburn, Nebraska

Half of springs at Auburn 5 ESE, NE see their last 32°F night by April 24; only one in ten is past it by April 10, and one in ten still has one after May 6. Planting tender crops after April 29 leaves a 30% risk of a frost on them, after May 2 20%, and after May 6 10%. The 12 days between the even-odds date and the one-in-ten date is narrower than at 57% of the 68 Nebraska stations behind this site's ZIP pages.

In fall the first 32°F night comes by October 10 in half of years, as early as September 25 one year in ten, and holds off past October 23 one year in ten. A hard freeze of 28°F follows 10 days later, around October 20; in spring the one-in-ten date for 28°F is April 28, 8 days before the 32°F one. The freeze-free season lasts 167 days in a typical year, longer than at 56% of the 68 Nebraska stations; it reaches 186 days one year in ten and falls short of 148 one year in ten. On average 135 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 7 days longer, to about May 1, and return around October 1. Severe cold of 16°F or below comes every winter, usually between November 16 and March 17.

July is the warmest month at Auburn 5 ESE, NE, averaging 87°F by day and 67°F at night; January is the coldest at 35°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 August the chance of a 32°F night stays under 10% each month. In spring, May still brings one in 24% of years.

Warmth for growing adds up to 3,766 growing degree days a year (base 50°F), more than at 97% of the 68 Nebraska stations. 37% of them (1,385) have built up by the end of June, and July adds the most, 843. Precipitation totals 32.3 inches a year, most in May (5.0") and least in January (0.8"); May to September bring 62% of it.

The nearest other station, Tecumseh 1S, NE, 18 miles west of Auburn and 180 feet higher, has a last frost 2 days later (April 26), the same first-frost date, a season 3 days shorter.

The first measurable snow (0.1 inch or more) in Auburn usually arrives around November 16, and the last of the season around March 28. Those are the middle dates across the winters of 1991–2020 at Auburn 5 ESE, NE, 5.1 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 27 days after the last snow.

ZIP 68305 is 5 miles from Auburn 5 ESE, NE, which stands at 930 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 68305 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.