Webster, WI 54830 Frost Dates
When can you plant in Webster, WI?
The last spring frost here typically falls around 05/14, about 259 days from today. The first fall frost typically arrives around 09/28, about 135 frost-free days later.
Webster sits in USDA Zone 4a (-30 to -25°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.
What to do before the first frost
About 4 weeks of growing season left in Webster before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 05/14 isn't a guarantee
05/14 is the middle of 30 years of NOAA records, not a promise. Plant by 04/30 and you're betting against frost in roughly 9 years out of 10. 05/29 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Webster compares
At roughly 135 frost-free days, Webster places 37,899 of 40,283 ZIP codes in this dataset. Within WI, it ranks 776 of 860.
Learn more
the frost range covers how to read the range around Webster's dates instead of trusting one. local microclimates covers what one yard in Webster can differ from the 54830 normal.