Frost and Freeze Dates in Iowa - Buena Vista to Clarke

Below is the likelihood of experiencing 32°F on or before the given date in fall and on or after the given date in spring.

Oak with frost on leaves Early = only 10% of all freeze dates occurred before this day.
Average = the average freeze date for this location.
Late = only 10% of all freeze dates occurred after this day.

This information is based on weather data collected from 1950-2021 provided by the Midwestern Regional Climate Center (MRCC). Visit that website to get more detailed information and statistics.

Buena Vista | Butler | Calhoun | Carroll | Cass | Cedar | Cerro Gordo | Cherokee | Chickasaw | Clarke

Buena Vista County

Early = only 10% of all freeze dates occurred before this day.
Average = the average freeze date for this location.
Late = only 10% of all freeze dates occurred after this day.

Early First Fall Freeze (32°F)	Average First Fall Freeze (32°F)	Late First Fall Freeze (32°F)	Early Last Spring Freeze Date (32°F)	Average Last Spring Freeze Date (32°F)	Late Last Spring Freeze Date (32°F)
23-Sep	6-Oct	23-Oct	12-Apr	28-Apr	11-May

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Butler County

Early = only 10% of all freeze dates occurred before this day.
Average = the average freeze date for this location.
Late = only 10% of all freeze dates occurred after this day.

Early First Fall Freeze (32°F)	Average First Fall Freeze (32°F)	Late First Fall Freeze (32°F)	Early Last Spring Freeze Date (32°F)	Average Last Spring Freeze Date (32°F)	Late Last Spring Freeze Date (32°F)
27-Sep	7-Oct	22-Oct	13-Apr	27-Apr	10-May

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Calhoun County

Early = only 10% of all freeze dates occurred before this day.
Average = the average freeze date for this location.
Late = only 10% of all freeze dates occurred after this day.

Early First Fall Freeze (32°F)	Average First Fall Freeze (32°F)	Late First Fall Freeze (32°F)	Early Last Spring Freeze Date (32°F)	Average Last Spring Freeze Date (32°F)	Late Last Spring Freeze Date (32°F)
27-Sep	7-Oct	20-Oct	13-Apr	26-Apr	8-May

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Carroll County

Early = only 10% of all freeze dates occurred before this day.
Average = the average freeze date for this location.
Late = only 10% of all freeze dates occurred after this day.

Early First Fall Freeze (32°F)	Average First Fall Freeze (32°F)	Late First Fall Freeze (32°F)	Early Last Spring Freeze Date (32°F)	Average Last Spring Freeze Date (32°F)	Late Last Spring Freeze Date (32°F)
21-Sep	3-Oct	19-Oct	13-Apr	27-Apr	9-May

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Cass County

Early = only 10% of all freeze dates occurred before this day.
Average = the average freeze date for this location.
Late = only 10% of all freeze dates occurred after this day.

Early First Fall Freeze (32°F)	Average First Fall Freeze (32°F)	Late First Fall Freeze (32°F)	Early Last Spring Freeze Date (32°F)	Average Last Spring Freeze Date (32°F)	Late Last Spring Freeze Date (32°F)
21-Sep	5-Oct	18-Oct	11-Apr	26-Apr	11-May

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Cedar County

Early = only 10% of all freeze dates occurred before this day.
Average = the average freeze date for this location.
Late = only 10% of all freeze dates occurred after this day.

Early First Fall Freeze (32°F)	Average First Fall Freeze (32°F)	Late First Fall Freeze (32°F)	Early Last Spring Freeze Date (32°F)	Average Last Spring Freeze Date (32°F)	Late Last Spring Freeze Date (32°F)
24-Sep	9-Oct	22-Oct	9-Apr	23-Apr	6-May

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Cerro Gordo County

Early = only 10% of all freeze dates occurred before this day.
Average = the average freeze date for this location.
Late = only 10% of all freeze dates occurred after this day.

Early First Fall Freeze (32°F)	Average First Fall Freeze (32°F)	Late First Fall Freeze (32°F)	Early Last Spring Freeze Date (32°F)	Average Last Spring Freeze Date (32°F)	Late Last Spring Freeze Date (32°F)
22-Sep	5-Oct	19-Oct	15-Apr	29-Apr	11-May

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Cherokee County

Early = only 10% of all freeze dates occurred before this day.
Average = the average freeze date for this location.
Late = only 10% of all freeze dates occurred after this day.

Early First Fall Freeze (32°F)	Average First Fall Freeze (32°F)	Late First Fall Freeze (32°F)	Early Last Spring Freeze Date (32°F)	Average Last Spring Freeze Date (32°F)	Late Last Spring Freeze Date (32°F)
19-Sep	2-Oct	15-Oct	16-Apr	1-May	14-May

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Chickasaw County

Early = only 10% of all freeze dates occurred before this day.
Average = the average freeze date for this location.
Late = only 10% of all freeze dates occurred after this day.

Early First Fall Freeze (32°F)	Average First Fall Freeze (32°F)	Late First Fall Freeze (32°F)	Early Last Spring Freeze Date (32°F)	Average Last Spring Freeze Date (32°F)	Late Last Spring Freeze Date (32°F)
22-Sep	5-Oct	18-Oct	16-Apr	29-Apr	11-May

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Clarke County

Early = only 10% of all freeze dates occurred before this day.
Average = the average freeze date for this location.
Late = only 10% of all freeze dates occurred after this day.

Early First Fall Freeze (32°F)	Average First Fall Freeze (32°F)	Late First Fall Freeze (32°F)	Early Last Spring Freeze Date (32°F)	Average Last Spring Freeze Date (32°F)	Late Last Spring Freeze Date (32°F)
26-Sep	10-Oct	25-Oct	9-Apr	23-Apr	8-May

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