Frost Dates for 80424 — Breckenridge, Colorado

Half of springs at Fairplay S Park Rd, CO see their last 32°F night by June 16; only one in ten is past it by June 2, and one in ten still has one after June 30. Planting tender crops after June 23 leaves a 30% risk of a frost on them, after June 26 20%, and after June 30 10%. The 14 days between the even-odds date and the one-in-ten date is narrower than at 45% of the 110 Colorado stations behind this site's ZIP pages.

In fall the first 32°F night comes by September 9 in half of years, as early as August 21 one year in ten, and holds off past September 24 one year in ten. A hard freeze of 28°F follows 12 days later, around September 21; in spring the one-in-ten date for 28°F is June 17, 13 days before the 32°F one. The freeze-free season lasts 83 days in a typical year, shorter than at 95% of the 110 Colorado stations; it reaches 101 days one year in ten and falls short of 63 one year in ten. On average 236 nights a year drop to 32°F or below. Severe cold of 16°F or below comes every winter, usually between October 20 and April 28.

July is the warmest month at Fairplay S Park Rd, CO, averaging 71°F by day and 42°F at night; February is the coldest at 31°F and 9°F. A freezing night is all but certain in every month from September to June (a 90% chance or more). July is the only month with under a 10% chance of a 32°F night.

Warmth for growing adds up to 505 growing degree days a year (base 50°F), fewer than at 99% of the 110 Colorado stations. 19% of them (94) have built up by the end of June, and July adds the most, 210.

The nearest other station, Vail, CO, 20 miles northwest of Breckenridge and 1,691 feet lower, has a last frost 5 days later (June 21), a first frost 2 days earlier (September 7), a season 6 days shorter.

The first measurable snow (0.1 inch or more) in Breckenridge usually arrives around October 3, and the last of the season around May 30. Those are the middle dates across the winters of 1991–2020 at Breckenridge, CO, 0.6 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 17 days after the last snow.

ZIP 80424 is 18 miles from Fairplay S Park Rd, CO, which stands at 9,995 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 80424 in zone 5a, the band where the coldest night of the year averaged -20 to -15°F (-28.9 to -26.1°C) over 1991–2020; a zone describes winter lows, not frost dates.