Meridian, ID 83642 Frost Dates
83642, near Meridian, ID: the frost window
The last spring frost here typically falls around 04/24, about 239 days from today. Fall's first freeze usually shows up around 10/21, roughly 179 days after the last spring frost.
Meridian sits in USDA Zone 7a (0 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
Meridian's growing season runs out in roughly 8 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Meridian's last frost
04/24 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/04 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/09 and only about 1 year in 10 sees frost after that.
Meridian against the rest of the dataset
Meridian's growing season runs about 179 days, ranking 25,139 of 40,283 US ZIP codes measured here, longest to shortest. Within ID, it ranks 18 of 320.
Learn more
Two guides worth reading on 83642: the frost range, on how to read the range around Meridian's dates instead of trusting one, and local microclimates, on what one yard in Meridian can differ from the 83642 normal.