Macon County, Missouri · Frost dates
Macon County frost dates.
First-frost, last-frost, and growing-season length for Macon County, Missouri. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 6a
32°F — light freeze
Last spring frost
- 10%
- 04-24
- 20%
- 04-19
- 50%
- 04-08
- 80%
- 03-30
- 90%
- 03-23
First fall frost
- 10%
- 10-14
- 20%
- 10-19
- 50%
- 10-28
- 80%
- 11-04
- 90%
- 11-10
28°F — killing freeze
Last spring freeze
- 10%
- 04-12
- 20%
- 04-07
- 50%
- 03-29
- 80%
- 03-16
- 90%
- 03-09
First fall freeze
- 10%
- 10-23
- 20%
- 10-29
- 50%
- 11-05
- 80%
- 11-15
- 90%
- 11-21
Growing season length (days, 28°F threshold)
- Short year
- 194
- Median
- 221
- Long year
- 257
Source NOAA station
LONG BRANCH RSVR, MO US
6.3 mi · 30 yrs of record (1991–2020) · 820 ft elev.
Data from LONG BRANCH RSVR, MO US, 6.3 miles away with 30-year NOAA record (1991-2020).
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