Monroe County, Iowa · Frost dates

Monroe County frost dates.

First-frost, last-frost, and growing-season length for Monroe County, Iowa. Sourced from NOAA 1991-2020 Climate Normals.

Data confidence: high · USDA zone: 5a

32°F — light freeze

Last spring frost

10%
05-09
20%
05-04
50%
04-24
80%
04-13
90%
04-08

First fall frost

10%
09-29
20%
10-04
50%
10-16
80%
10-24
90%
10-28

28°F — killing freeze

Last spring freeze

10%
04-29
20%
04-23
50%
04-12
80%
04-03
90%
03-29

First fall freeze

10%
10-11
20%
10-17
50%
10-26
80%
11-02
90%
11-06

Growing season length (days, 28°F threshold)

Short year
165
Median
197
Long year
222

Source NOAA station

ALBIA 3 NNE, IA US

5.0 mi · 30 yrs of record (19912020) · 880 ft elev.

Data from ALBIA 3 NNE, IA US, 5 miles away with 30-year NOAA record (1991-2020).

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