Zones / 5a

Zone 5a

In the 2023 PRISM ZIP table, zone 5a is labeled with an average annual extreme minimum of -20°F to -15°F. 2,393 ZIP codes carry that half-zone. USDA’s map page describes these bands as 5°F half-zones inside 10°F zones.

Among cities on this site in this half-zone, the median last 32°F date at each city’s station runs from April 19 to May 26. That is a range across stations, not a zone-wide frost normal. USDA does not publish a single frost date per half-zone.

• Minneapolis, MNZIP 55404 · 0.4 miles from the city point
• St. Paul, MNZIP 55101 · 0.8 miles from the city point
• Madison, WIZIP 53792 · 0.7 miles from the city point
• Sioux Falls, SDZIP 57117 · 1.3 miles from the city point
• Billings, MTZIP 59102 · 1.7 miles from the city point
• Bloomington, MNZIP 55431 · 0.4 miles from the city point
• Sioux City, IAZIP 51101 · 0.3 miles from the city point
• Brooklyn Park, MNZIP 55443 · 0.8 miles from the city point
• Woodbury, MNZIP 55125 · 1.1 miles from the city point
• Plymouth, MNZIP 55446 · 1.8 miles from the city point
• Blaine, MNZIP 55449 · 1.1 miles from the city point
• Maple Grove, MNZIP 55369 · 1.2 miles from the city point
• Waterloo, IAZIP 50702 · 2.9 miles from the city point
• Eagan, MNZIP 55123 · 1.5 miles from the city point
• Burnsville, MNZIP 55337 · 1 miles from the city point
• Coon Rapids, MNZIP 55433 · 1.1 miles from the city point
• Eden Prairie, MNZIP 55347 · 1.5 miles from the city point
• Dubuque, IAZIP 52001 · 3.5 miles from the city point
• Casper, WYZIP 82644 · 2.7 miles from the city point
• Bozeman, MTZIP 59718 · 6.4 miles from the city point
• Apple Valley, MNZIP 55124 · 0 miles from the city point
• Edina, MNZIP 55424 · 1.2 miles from the city point
• Minnetonka, MNZIP 55345 · 1.8 miles from the city point
• La Crosse, WIZIP 54603 · 2.7 miles from the city point
• St. Louis Park, MNZIP 55426 · 1 miles from the city point
• Shakopee, MNZIP 55379 · 2.6 miles from the city point
• Mankato, MNZIP 56001 · 3 miles from the city point
• Cottage Grove, MNZIP 55016 · 1 miles from the city point
• Marion, IAZIP 52302 · 1.9 miles from the city point
• Cedar Falls, IAZIP 50613 · 1.8 miles from the city point

Source: PRISM 2023 PHZM ZIP CSV and USDA Plant Hardiness Zone Map.