Frost Dates for 81413 — Cedaredge, Colorado

Half of springs at Cedaredge 3E, CO see their last 32°F night by May 3; only one in ten is past it by April 22, and one in ten still has one after May 21. Planting tender crops after May 11 leaves a 30% risk of a frost on them, after May 15 20%, and after May 21 10%. The 18 days between the even-odds date and the one-in-ten date is wider than at 89% of the 110 Colorado 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 24 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 10, 11 days before the 32°F one. The freeze-free season lasts 156 days in a typical year, longer than at 73% of the 110 Colorado stations; it reaches 177 days one year in ten and falls short of 135 one year in ten. On average 150 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 15 days longer, to about May 18, and return around October 2. Severe cold of 16°F or below comes every winter, usually between November 19 and March 6.

July is the warmest month at Cedaredge 3E, CO, averaging 86°F by day and 59°F at night; January is the coldest at 37°F and 19°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 63% of years.

Warmth for growing adds up to 2,561 growing degree days a year (base 50°F), more than at 54% of the 110 Colorado stations. 30% of them (780) have built up by the end of June, and July adds the most, 693. Precipitation totals 12.4 inches a year, most in September (1.8") and least in June (0.5"); May to September bring 46% of it.

The nearest other station, Delta 3E, CO, 14 miles southwest of Cedaredge and 1,811 feet lower, has a last frost 2 days earlier (May 1), a first frost 2 days earlier (October 7), a season 3 days longer.

The first measurable snow (0.1 inch or more) in Cedaredge usually arrives around November 10, and the last of the season around April 13. Those are the middle dates across the winters of 1991–2020 at Cedaredge 3E, CO, 3.2 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 20 days after the last snow.

ZIP 81413 is 3 miles from Cedaredge 3E, CO, which stands at 6,838 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 81413 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.