Cass County, Minnesota · Frost dates
Cass County frost dates.
First-frost, last-frost, and growing-season length for Cass County, Minnesota. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 4a
32°F — light freeze
Last spring frost
- 10%
- 05-19
- 20%
- 05-14
- 50%
- 05-05
- 80%
- 04-29
- 90%
- 04-24
First fall frost
- 10%
- 09-22
- 20%
- 09-27
- 50%
- 10-05
- 80%
- 10-15
- 90%
- 10-20
28°F — killing freeze
Last spring freeze
- 10%
- 05-08
- 20%
- 05-05
- 50%
- 04-26
- 80%
- 04-17
- 90%
- 04-12
First fall freeze
- 10%
- 10-01
- 20%
- 10-06
- 50%
- 10-18
- 80%
- 10-28
- 90%
- 11-02
Growing season length (days, 28°F threshold)
- Short year
- 146
- Median
- 175
- Long year
- 204
Source NOAA station
DEEP PORTAGE, MN US
4.4 mi · 30 yrs of record (1991–2020) · 1471 ft elev.
Data from DEEP PORTAGE, MN US, 4.4 miles away with 30-year NOAA record (1991-2020).
Bield Farm earns its predictions.
14-day free trial. No credit card. Cancel anytime.