Frost history / Kyle 2 E, SD
Kyle 2 E, SD: frost dates by year
Last spring and first fall frost at NOAA station USC00394630, 1957 to 2025, measured from daily minimum temperatures.
Elevation 2,958 ft, 43.440, -102.143. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | May 20 | Sep 15 |
| Earliest | Apr 28 (1957) | Aug 12 (1964) |
| Latest | Jun 25 (1958) | Oct 15 (2015) |
| Trend | 1.4 days earlier per decade | 2.4 days later per decade |
| Years with data | 24 | 24 |
At 28°F (hard freeze) the median last spring date is May 14 and the median first fall date is Sep 29.
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 | May 21 | Sep 5 | May 17 | Sep 6 |
| 2024 | May 5 | Sep 22 | May 4 | Sep 22 |
| 2023 | May 19 | Oct 6 | May 2 | Oct 7 |
| 2022 | May 25 | Sep 26 | May 22 | Oct 8 |
| 2021 | May 13 | Oct 11 | May 4 | Oct 15 |
| 2020 | no data | Aug 31 | no data | Sep 10 |
| 2018 | May 20 | Sep 26 | Apr 25 | Sep 26 |
| 2017 | Jun 24 | Sep 5 | May 24 | Sep 5 |
| 2016 | May 17 | Sep 26 | May 15 | Oct 6 |
| 2015 | May 30 | Oct 15 | May 21 | Oct 16 |
| 2014 | May 16 | Sep 14 | May 15 | Oct 4 |
| 2013 | May 11 | Sep 20 | May 11 | Oct 6 |
| 2012 | no data | Sep 14 | no data | Oct 6 |
| 1998 | May 5 | no data | May 5 | no data |
| 1997 | no data | Oct 13 | no data | Oct 13 |
| 1975 | May 30 | Sep 12 | Apr 19 | Sep 21 |
| 1974 | May 31 | Sep 3 | May 12 | Sep 21 |
| 1973 | May 25 | no data | May 22 | no data |
| 1972 | Jun 20 | Sep 15 | May 7 | Sep 21 |
| 1971 | May 19 | Sep 15 | May 6 | Sep 17 |
| 1970 | May 3 | Sep 13 | May 1 | Sep 26 |
| 1969 | Jun 15 | Sep 23 | Jun 14 | Oct 8 |
| 1968 | May 20 | Sep 5 | May 20 | Oct 3 |
| 1965 | May 28 | Sep 1 | May 28 | Sep 17 |
| 1964 | Jun 2 | Aug 12 | May 24 | Sep 26 |
| 1963 | no data | Sep 29 | no data | Oct 28 |
| 1958 | Jun 25 | no data | Jun 25 | no data |
| 1957 | Apr 28 | no data | Apr 17 | no data |
"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.