Frost Dates for 56307 — Albany, Minnesota

Half of springs at Collegeville St John'S, MN see their last 32°F night by May 3; only one in ten is past it by April 21, and one in ten still has one after May 17. Planting tender crops after May 8 leaves a 30% risk of a frost on them, after May 12 20%, and after May 17 10%. The 14 days between the even-odds date and the one-in-ten date is narrower than at 37% of the 142 Minnesota stations behind this site's ZIP pages.

In fall the first 32°F night comes by October 7 in half of years, as early as September 25 one year in ten, and holds off past October 19 one year in ten. A hard freeze of 28°F follows 11 days later, around October 18; in spring the one-in-ten date for 28°F is May 7, 10 days before the 32°F one. The freeze-free season lasts 155 days in a typical year, longer than at 64% of the 142 Minnesota stations; it reaches 172 days one year in ten and falls short of 137 one year in ten. On average 159 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 May 13, and return around September 28. Severe cold of 16°F or below comes every winter, usually between November 13 and April 2.

July is the warmest month at Collegeville St John'S, MN, averaging 81°F by day and 61°F at night; January is the coldest at 21°F and 4°F. A freezing night is all but certain in every month from October to April (a 90% chance or more). From June to August the chance of a 32°F night stays under 10% each month. In spring, May still brings one in 60% of years.

Warmth for growing adds up to 2,418 growing degree days a year (base 50°F), fewer than at 51% of the 142 Minnesota stations. 32% of them (781) have built up by the end of June, and July adds the most, 646. Precipitation totals 31.1 inches a year, most in June (4.6") and least in January (0.8"); May to September bring 63% of it.

The nearest other station, Melrose, MN, 11 miles west of Albany, has a last frost 1 day later (May 4), a first frost 6 days earlier (October 1), a season 7 days shorter.

The first measurable snow (0.1 inch or more) in Albany usually arrives around November 9, and the last of the season around April 14. Those are the middle dates across the winters of 1991–2020 at Collegeville St John'S, MN, 9.9 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 19 days after the last snow.

ZIP 56307 is 10 miles from Collegeville St John'S, MN, which stands at 1,210 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 56374 (Saint Joseph). The 2023 USDA Plant Hardiness Zone Map lists ZIP 56307 in zone 4b, the band where the coldest night of the year averaged -25 to -20°F (-31.7 to -28.9°C) over 1991–2020; a zone describes winter lows, not frost dates.