Frost history / Niles, MI
Niles, MI: frost dates by year
Last spring and first fall frost at NOAA station USC00205892, 2009 to 2025, measured from daily minimum temperatures.
Elevation 650 ft, 41.841, -86.266. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Apr 27 | Oct 22 |
| Earliest | Apr 1 (2019) | Oct 4 (2010) |
| Latest | May 14 (2021) | Nov 1 (2019) |
| Trend | 3.7 days earlier per decade | 11.4 days later per decade |
| Years with data | 16 | 17 |
At 28°F (hard freeze) the median last spring date is Apr 16 and the median first fall date is Nov 10.
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 12 | Oct 25 | Apr 12 | Nov 10 |
| 2024 | Apr 25 | Oct 27 | Mar 29 | Nov 21 |
| 2023 | May 2 | Oct 31 | Apr 2 | Oct 31 |
| 2022 | Apr 27 | Oct 20 | Apr 17 | Nov 18 |
| 2021 | May 14 | Oct 27 | Apr 22 | Nov 23 |
| 2020 | May 9 | Oct 25 | May 9 | Oct 25 |
| 2019 | Apr 1 | Nov 1 | Apr 1 | Nov 1 |
| 2018 | Apr 29 | Oct 18 | Apr 29 | Nov 10 |
| 2017 | May 8 | Oct 26 | May 8 | Nov 8 |
| 2016 | Apr 13 | Oct 25 | Apr 12 | Nov 12 |
| 2015 | Apr 24 | Oct 18 | Apr 24 | Nov 9 |
| 2014 | Apr 19 | Oct 12 | Apr 16 | Nov 1 |
| 2013 | May 13 | Oct 22 | Apr 21 | Nov 11 |
| 2012 | Apr 27 | Oct 8 | Apr 27 | Nov 3 |
| 2011 | Apr 21 | Oct 22 | Apr 1 | Nov 17 |
| 2010 | May 10 | Oct 4 | Mar 26 | Nov 3 |
| 2009 | no data | Oct 11 | no data | Nov 12 |
"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.