Frost and Freeze Dates in Iowa - Warren to Wright

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 leavesEarly = 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.



Warren |  Washington  |  Wayne  |  Webster  |  Winnebago  |  Winneshiek  |  Woodbury  |  Worth  |  Wright



Warren 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-Sep10-Oct23-Oct9-Apr23-Apr6-May

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Washington 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)
28-Sep12-Oct27-Oct7-Apr20-Apr4-May

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Wayne 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)
30-Sep12-Oct27-Oct7-Apr20-Apr3-May

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Webster 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-Sep7-Oct20-Oct13-Apr26-Apr9-May

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Winnebago 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-Sep4-Oct15-Oct14-Apr28-Apr10-May

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Winneshiek 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-Sep3-Oct15-Oct18-Apr2-May18-May

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Woodbury 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-Sep4-Oct16-Oct9-Apr26-Apr10-May

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Worth 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-Sep5-Oct18-Oct17-Apr28-Apr11-May

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Wright 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-Sep3-Oct15-Oct14-Apr29-Apr11-May

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