Olmsted County, Minnesota · Frost dates
Olmsted County frost dates.
First-frost, last-frost, and growing-season length for Olmsted County, Minnesota. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 4a
32°F — light freeze
Last spring frost
- 10%
- 05-13
- 20%
- 05-08
- 50%
- 04-30
- 80%
- 04-21
- 90%
- 04-15
First fall frost
- 10%
- 09-22
- 20%
- 09-27
- 50%
- 10-06
- 80%
- 10-16
- 90%
- 10-20
28°F — killing freeze
Last spring freeze
- 10%
- 05-02
- 20%
- 04-29
- 50%
- 04-18
- 80%
- 04-08
- 90%
- 04-04
First fall freeze
- 10%
- 10-04
- 20%
- 10-08
- 50%
- 10-17
- 80%
- 10-26
- 90%
- 10-31
Growing season length (days, 28°F threshold)
- Short year
- 155
- Median
- 182
- Long year
- 210
Source NOAA station
ROCHESTER INTL AP, MN US
7.7 mi · 30 yrs of record (1991–2020) · 1304 ft elev.
Data from ROCHESTER INTL AP, MN US, 7.7 miles away with 30-year NOAA record (1991-2020).
Bield Farm earns its predictions.
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