Frost history / Davenport Wfo, IA
Davenport Wfo, IA: frost dates by year
Last spring and first fall frost at NOAA station USC00132070, 2011 to 2025, measured from daily minimum temperatures.
Elevation 750 ft, 41.612, -90.580. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Apr 23 | Oct 15 |
| Earliest | Apr 7 (2017) | Sep 23 (2012) |
| Latest | May 9 (2020) | Oct 30 (2014) |
| Trend | 5.1 days later per decade | 2.9 days later per decade |
| Years with data | 13 | 14 |
At 28°F (hard freeze) the median last spring date is Apr 19 and the median first fall date is Oct 27.
The trend is a straight-line fit through the years with a freeze. A positive spring trend means the last frost now comes later. Short or patchy records give noisy trends.
Chart
Last spring frost (32°F)
First fall frost (32°F)
Dots are single years. The gray line is the median, the green line the fitted trend.
Year by year
| Year | Last spring 32°F | First fall 32°F | Last spring 28°F | First fall 28°F |
|---|---|---|---|---|
| 2025 | Apr 8 | Oct 23 | Apr 8 | Nov 9 |
| 2024 | Apr 21 | Oct 15 | Apr 21 | Oct 16 |
| 2023 | Apr 26 | Oct 10 | Apr 24 | Oct 30 |
| 2022 | Apr 26 | Oct 8 | Apr 19 | Oct 15 |
| 2021 | Apr 25 | Oct 23 | Apr 22 | Nov 1 |
| 2020 | May 9 | Oct 16 | May 9 | Oct 27 |
| 2019 | Apr 28 | Oct 12 | Apr 15 | Oct 29 |
| 2018 | Apr 29 | Oct 12 | Apr 20 | Oct 20 |
| 2017 | Apr 7 | Oct 25 | Apr 7 | Oct 28 |
| 2016 | Apr 12 | Oct 13 | Apr 12 | Nov 12 |
| 2015 | Apr 23 | Oct 16 | Apr 23 | Oct 17 |
| 2014 | Apr 18 | Oct 30 | Apr 18 | Oct 31 |
| 2012 | Apr 12 | Sep 23 | Apr 12 | Oct 5 |
| 2011 | no data | Oct 17 | no data | Oct 21 |
"none" means the station recorded no freeze at that threshold in that half of the year. "no data" means more than 10% of the season's daily readings were missing. Years with no usable data are left out. See the methodology for the rules, and the ZIP lookup for 1991 to 2020 frost probabilities.