Frost history / Bloomington 5W, IL
Bloomington 5W, IL: frost dates by year
Last spring and first fall frost at NOAA station USC00110764, 2000 to 2015, measured from daily minimum temperatures.
Elevation 852 ft, 40.486, -89.086. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Apr 16 | Oct 12 |
| Earliest | Apr 6 (2011) | Oct 1 (2003) |
| Latest | May 21 (2002) | Nov 6 (2007) |
| Trend | 4.2 days earlier per decade | 14.7 days later per decade |
| Years with data | 16 | 15 |
At 28°F (hard freeze) the median last spring date is Apr 11 and the median first fall date is Oct 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 |
|---|---|---|---|---|
| 2015 | Apr 24 | no data | Apr 5 | no data |
| 2014 | Apr 17 | Nov 1 | Apr 17 | Nov 1 |
| 2013 | Apr 21 | Oct 22 | Apr 4 | Oct 25 |
| 2012 | Apr 22 | Oct 6 | Apr 12 | Nov 1 |
| 2011 | Apr 6 | Oct 22 | Mar 30 | Nov 11 |
| 2010 | Apr 10 | Oct 29 | Mar 27 | Oct 29 |
| 2009 | Apr 15 | Oct 11 | Apr 8 | Nov 27 |
| 2008 | Apr 15 | Oct 28 | Apr 15 | Oct 28 |
| 2007 | Apr 16 | Nov 6 | Apr 14 | Nov 7 |
| 2006 | Apr 27 | Oct 12 | Apr 10 | Oct 12 |
| 2005 | May 4 | Oct 9 | May 4 | Nov 11 |
| 2004 | Apr 13 | Oct 4 | Apr 13 | Nov 11 |
| 2003 | Apr 13 | Oct 1 | Apr 10 | Oct 1 |
| 2002 | May 21 | Oct 15 | Apr 6 | Oct 19 |
| 2001 | Apr 18 | Oct 5 | Apr 16 | Oct 27 |
| 2000 | Apr 12 | Oct 7 | Apr 12 | Oct 9 |
"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.