Westwood, MO 63099 Frost Dates
Westwood, MO: when does the frost end?
Around 04/04 is the usual last spring frost, about 219 days away. Fall's first freeze usually shows up around 10/29, roughly 206 days after the last spring frost.
Westwood sits in USDA Zone 6b (-5 to 0°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
With roughly 9 weeks until Westwood's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
04/04 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/20 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/21 and only about 1 year in 10 sees frost after that.
Westwood against the rest of the dataset
Westwood's growing season runs about 206 days, ranking 16,121 of 40,283 US ZIP codes measured here, longest to shortest. Within MO, it ranks 239 of 1,129.
Learn more
Before leaning on 63099's figures: local microclimates explains what one yard in Westwood can differ from the 63099 normal, while zone vs. frost date explains why Zone 6b and Westwood's frost date answer different questions.