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First and last freeze dates in Burlington (Iowa), IA

The first freeze of fall (a low of 32°F or colder) typically comes around Oct 18, and the last freeze of spring around Apr 16.

This fall so far (data through Oct 16, 2026): no 32°F freeze recorded yet at this station. Observed data, can lag a day or two.

Oct 18Median first fall freeze (≤32°F)

Apr 16Median last spring freeze (≤32°F)

184Median freeze-free days between

First and last freeze dates in Burlington (Iowa)

Threshold	Event	Median date	Typical range (10th–90th pct)	Earliest / latest	Years with one
32°F or colder (freeze)	First in fall	Oct 18	Oct 5 – Oct 31	Sep 22 (1995) / Nov 12 (2016)	100%
32°F or colder (freeze)	Last in spring	Apr 16	Apr 1 – May 1	–	100%
28°F or colder (hard freeze)	First in fall	Oct 30	Oct 18 – Nov 16	Oct 2 (2003) / Nov 26 (2024)	100%
28°F or colder (hard freeze)	Last in spring	Apr 5	Mar 24 – Apr 16	–	100%

Based on the station’s daily minimum temperature, 1995–2024. “Freeze” here means a daily low at or below the threshold, which is not the same as visible frost. Your yard can differ by several degrees and days from an airport weather station, so use these as planning odds, not guarantees.

The median stretch between the last spring freeze and the first fall freeze (the freeze-free season) was about 184 days.

Nearby weather stations

Source station: Burlington Muni Ap (USW00014931), elevation 683 ft. Data: NOAA NCEI GHCN-Daily. Computed by First Snow Dates; how we calculate this. Historical averages only; for a forecast see weather.gov.

Planning for winter? Heat pump vs gas furnace, propane and oil: heating cost in Iowa (on our sister site PlugVsPump, from EIA prices).