Frost Dates for 64048 — Holt, Missouri

Half of springs at Kearney 3E, MO see their last 32°F night by April 19; only one in ten is past it by April 4, and one in ten still has one after May 5. Planting tender crops after April 26 leaves a 30% risk of a frost on them, after April 30 20%, and after May 5 10%. The 16 days between the even-odds date and the one-in-ten date is narrower than at 35% of the 158 Missouri stations behind this site's ZIP pages.

In fall the first 32°F night comes by October 17 in half of years, as early as October 4 one year in ten, and holds off past October 30 one year in ten. A hard freeze of 28°F follows 10 days later, around October 27; in spring the one-in-ten date for 28°F is April 24, 11 days before the 32°F one. The freeze-free season lasts 181 days in a typical year, shorter than at 87% of the 158 Missouri stations; it reaches 201 days one year in ten and falls short of 159 one year in ten. On average 128 nights a year drop to 32°F or below. Nights of 36°F, when frost can still settle on leaves in low, open spots, continue 10 days longer, to about April 29, and return around October 8. Severe cold of 16°F or below comes every winter, usually between November 27 and March 7.

July is the warmest month at Kearney 3E, MO, averaging 88°F by day and 67°F at night; January is the coldest at 38°F and 17°F. A freezing night is all but certain in every month from October to April (a 90% chance or more). From June to September the chance of a 32°F night stays under 10% each month. In spring, May still brings one in 18% of years.

Warmth for growing adds up to 3,832 growing degree days a year (base 50°F), fewer than at 75% of the 158 Missouri stations. 36% of them (1,383) have built up by the end of June, and July adds the most, 851. Precipitation totals 41.3 inches a year, most in July (5.4") and least in January (1.3"); May to September bring 60% of it.

The nearest other station, Smithville Lake, MO, 11 miles west of Holt, has a last frost 1 day earlier (April 18), a first frost 3 days later (October 20), a season 2 days longer.

The first measurable snow (0.1 inch or more) in Holt usually arrives around December 6, and the last of the season around March 9. Those are the middle dates across the winters of 1991–2020 at Kearney 3E, MO, 5.6 miles away: half of years saw snow earlier, half later. Every one of those winters saw snow. The last 32°F night of spring typically comes 41 days after the last snow.

ZIP 64048 is 6 miles from Kearney 3E, MO, which stands at 840 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 5 other ZIP codes share the station; its figures are presented in full for 64068 (Liberty). The 2023 USDA Plant Hardiness Zone Map lists ZIP 64048 in zone 6a, the band where the coldest night of the year averaged -10 to -5°F (-23.3 to -20.6°C) over 1991–2020; a zone describes winter lows, not frost dates.