Gallup, NM 87305 Frost Dates
87305, near Gallup, NM: the frost window
Around 05/31 is the usual last spring frost, about 276 days away. Fall's first freeze usually shows up around 09/28, roughly 119 days after the last spring frost.
Gallup sits in USDA Zone 6a (-10 to -5°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
Stretching the season past the first frost
Gallup's growing season runs out in roughly 4 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 05/31 isn't a guarantee
05/31 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/15 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/14 and only about 1 year in 10 sees frost after that.
Gallup against the rest of the dataset
Gallup's growing season runs about 119 days, ranking 39,125 of 40,283 US ZIP codes measured here, longest to shortest. Within NM, it ranks 382 of 427.
Learn more
Two guides worth reading on 87305: zone vs. frost date, on why Zone 6a and Gallup's frost date answer different questions, and the frost range, on how to read the range around Gallup's dates instead of trusting one.