Frost Dates in New Mexico

At the middle station of the 68 in New Mexico where a freeze comes every year, the last spring frost (50%) is April 27 and the first fall frost October 19, a freeze-free season of 175 days. The last frost is earliest at Chaparral (La Tuna 1 S, TX, February 28) and latest at Ramah (El Morro Natl Mon, NM, June 3), 95 days apart. The season runs from 114 days at Ramah to 264 at Chaparral.

51 of these stations were also in NOAA's previous normals, for 1981–2010. Between the two, the median station's freeze-free season grew 3 days longer, with the last spring frost 2 days earlier and the first fall frost 1 day later; the season lengthened at 32 stations and shortened at 16. The two periods share twenty years, so the change reflects mostly 2011–2020 against 1981–1990.