Wright County, Iowa · Frost dates

Wright County frost dates.

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

Data confidence: high · USDA zone: 5a

32°F — light freeze

Last spring frost

10%
05-12
20%
05-08
50%
04-30
80%
04-20
90%
04-17

First fall frost

10%
09-27
20%
10-01
50%
10-10
80%
10-18
90%
10-21

28°F — killing freeze

Last spring freeze

10%
05-03
20%
04-29
50%
04-19
80%
04-10
90%
04-04

First fall freeze

10%
10-04
20%
10-10
50%
10-19
80%
10-27
90%
10-31

Growing season length (days, 28°F threshold)

Short year
154
Median
183
Long year
210

Source NOAA station

CLARION, IA US

0.9 mi · 30 yrs of record (19912020) · 1156 ft elev.

Data from CLARION, IA US, 0.9 miles away with 30-year NOAA record (1991-2020).

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