Bremer County, Iowa · Frost dates

Bremer County frost dates.

First-frost, last-frost, and growing-season length for Bremer 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%
05-06
50%
04-29
80%
04-18
90%
04-14

First fall frost

10%
09-25
20%
10-01
50%
10-09
80%
10-18
90%
10-22

28°F — killing freeze

Last spring freeze

10%
05-03
20%
04-29
50%
04-18
80%
04-08
90%
04-04

First fall freeze

10%
10-05
20%
10-11
50%
10-20
80%
10-27
90%
10-31

Growing season length (days, 28°F threshold)

Short year
155
Median
185
Long year
210

Source NOAA station

TRIPOLI, IA US

4.2 mi · 30 yrs of record (19912020) · 1055 ft elev.

Data from TRIPOLI, IA US, 4.2 miles away with 30-year NOAA record (1991-2020).

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