ZIP 55125 Zone 5a

Minnesota · USDA zone 5a, average annual extreme minimum -20°F to -15°F.

Nearest qualified station: ST PAUL, MN US (USC00217377), 4.9 miles from the Census ZCTA internal point for this ZIP.

Median last 32°F is April 26. Median first 32°F is October 12. The 50% growing-season length is 166 days. The green band runs from the median last frost to the median first frost. Thin ticks mark the 10%, 50%, and 90% dates.

Outside the median season Growing seasonTicks: 10%, 50%, and 90%

Last 32°F in spring

NCEI’s probability is the chance the last spring minimum of 32°F or lower occurs on or after the date.

ProbabilityDateHow to read it
90%April 12Earlier date. A last 32°F on or after this day is common.
50%April 26Median.
10%May 11Later date. A last 32°F on or after this day is uncommon.

First 32°F in fall

NCEI’s probability is the chance the first autumn minimum of 32°F or lower occurs on or before the date.

ProbabilityDateHow to read it
10%September 27Earlier date. A first 32°F on or before this day is uncommon.
50%October 12Median.
90%October 25Later date. A first 32°F on or before this day is common.

32°F growing-season length

Days between the last spring 32°F and the first autumn 32°F. The figure is a length the season meets or exceeds at that probability, from NCEI, not a subtraction done on this site.

Probability the season is at least this longDays
10%187
50%166
90%148

28°F threshold

10%50%90%
Last, on or afterApril 30April 16April 2
First, on or beforeOctober 7October 24November 6
Season at least208 days189 days169 days

36°F threshold

10%50%90%
Last, on or afterMay 21May 7April 23
First, on or beforeSeptember 20October 3October 16
Season at least166 days149 days129 days

Station ST PAUL, MN US (USC00217377). Completeness flag R, 14 years used for the 32°F dates. NCEI’s annual probability of at least one day at or below 32°F is 100%. Freeze dates are conditional on that threshold occurring. Elevation 274.3 m. The same probability language applies to the 28°F and 36°F rows when those dates passed the same quality checks.

Methodology · Minnesota cities