Frost Dates for 56464 — Menahga, Minnesota

Half of springs at Park Rapids Municipal Airport, MN see their last 32°F night by May 14; only one in ten is past it by May 1, and one in ten still has one after May 27. Planting tender crops after May 18 leaves a 30% risk of a frost on them, after May 22 20%, and after May 27 10%. The 13 days between the even-odds date and the one-in-ten date is narrower than at 61% of the 142 Minnesota stations behind this site's ZIP pages.

In fall the first 32°F night comes by September 25 in half of years, as early as September 12 one year in ten, and holds off past October 8 one year in ten. A hard freeze of 28°F follows 9 days later, around October 4; in spring the one-in-ten date for 28°F is May 17, 10 days before the 32°F one. The freeze-free season lasts 133 days in a typical year, shorter than at 89% of the 142 Minnesota stations; it reaches 150 days one year in ten and falls short of 115 one year in ten. On average 186 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 11 days longer, to about May 25, and return around September 16. Severe cold of 16°F or below comes every winter, usually between November 4 and April 7.

July is the warmest month at Park Rapids Municipal Airport, MN, averaging 80°F by day and 57°F at night; January is the coldest at 18°F and -3°F. A freezing night is all but certain in every month from October to May (a 90% chance or more). From June to August the chance of a 32°F night stays under 10% each month.

Warmth for growing adds up to 2,052 growing degree days a year (base 50°F), fewer than at 77% of the 142 Minnesota stations. 32% of them (648) have built up by the end of June, and July adds the most, 578. Precipitation totals 23.8 inches a year, most in June (4.1") and least in January (0.4"); May to September bring 70% of it.

The nearest other station, New York Mills, MN, 22 miles southwest of Menahga, has a last frost 4 days earlier (May 10), a first frost 4 days later (September 29), a season 8 days longer.

The first measurable snow (0.1 inch or more) in Menahga usually arrives around October 29, and the last of the season around April 13. Those are the middle dates across the winters of 1991–2020 at New York Mills, MN, 21.9 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 31 days after the last snow.

ZIP 56464 is 9 miles from Park Rapids Municipal Airport, MN, which stands at 1,434 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 2 other ZIP codes share the station; its figures are presented in full for 56470 (Park Rapids). The 2023 USDA Plant Hardiness Zone Map lists ZIP 56464 in zone 4a, the band where the coldest night of the year averaged -30 to -25°F (-34.4 to -31.7°C) over 1991–2020; a zone describes winter lows, not frost dates.