Frost Dates for 80759 — Yuma, Colorado

Half of springs at Yuma, CO see their last 32°F night by May 1; 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 6 leaves a 30% risk of a frost on them, after May 9 20%, and after May 13 10%. The 12 days between the even-odds date and the one-in-ten date is narrower than at 81% of the 110 Colorado stations behind this site's ZIP pages.

In fall the first 32°F night comes by October 12 in half of years, as early as September 30 one year in ten, and holds off past October 23 one year in ten. A hard freeze of 28°F follows 8 days later, around October 20; 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 164 days in a typical year, longer than at 88% of the 110 Colorado stations; it reaches 181 days one year in ten and falls short of 146 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 10, and return around October 4. Severe cold of 16°F or below comes every winter, usually between November 14 and March 15.

July is the warmest month at Yuma, CO, averaging 92°F by day and 62°F at night; January is the coldest at 43°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 August the chance of a 32°F night stays under 10% each month. In spring, May still brings one in 52% of years.

Warmth for growing adds up to 3,338 growing degree days a year (base 50°F), more than at 87% of the 110 Colorado stations. 33% of them (1,101) have built up by the end of June, and July adds the most, 835. Precipitation totals 17.9 inches a year, most in July (3.1") and least in January (0.3"); May to September bring 70% of it.

The nearest other station, Akron 4 E, CO, 24 miles west of Yuma and 408 feet higher, has a last frost 7 days later (May 8), a first frost 6 days earlier (October 6), a season 15 days shorter.

The first measurable snow (0.1 inch or more) in Yuma usually arrives around November 2, and the last of the season around March 30. Those are the middle dates across the winters of 1991–2020 at Yuma, CO, 3.6 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 32 days after the last snow.

ZIP 80759 is 4 miles from Yuma, CO, which stands at 4,134 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 80759 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.