Sutherland, IA 51058 Frost Dates
51058, near Sutherland, IA: the frost window
Typically, the last spring freeze lands around 04/29, roughly 244 days out. Fall's first freeze usually shows up around 10/10, roughly 163 days after the last spring frost.
Sutherland sits in USDA Zone 5a (-20 to -15°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
Sutherland's growing season runs out in roughly 6 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
04/29 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/13 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/11 and only about 1 year in 10 sees frost after that.
Sutherland against the rest of the dataset
At roughly 163 frost-free days, Sutherland places 31,499 of 40,283 ZIP codes in this dataset. Within IA, it ranks 674 of 1,042.
Learn more
Two guides worth reading on 51058: the frost range, on how to read the range around Sutherland's dates instead of trusting one, and local microclimates, on what one yard in Sutherland can differ from the 51058 normal.