Frost history / Compton 1 Nw, IL
Compton 1 Nw, IL: frost dates by year
Last spring and first fall frost at NOAA station USC00111835, 1992 to 2003, measured from daily minimum temperatures.
Elevation 905 ft, 41.706, -89.100. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Apr 30 | Oct 5 |
| Earliest | Apr 17 (1998) | Sep 23 (1992) |
| Latest | May 28 (1992) | Oct 14 (1999) |
| Trend | 12.2 days earlier per decade | 7.5 days later per decade |
| Years with data | 12 | 12 |
At 28°F (hard freeze) the median last spring date is Apr 20 and the median first fall date is Oct 9.
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 |
|---|---|---|---|---|
| 2003 | May 3 | Oct 2 | Apr 23 | Oct 2 |
| 2002 | May 21 | Oct 13 | May 21 | Oct 15 |
| 2001 | Apr 24 | Sep 25 | Apr 18 | Oct 7 |
| 2000 | Apr 26 | Oct 7 | Apr 12 | Oct 7 |
| 1999 | Apr 19 | Oct 14 | Mar 27 | Oct 18 |
| 1998 | Apr 17 | Oct 14 | Apr 6 | Oct 22 |
| 1997 | May 21 | Oct 14 | May 16 | Oct 14 |
| 1996 | May 12 | Oct 3 | Apr 27 | Oct 3 |
| 1995 | Apr 26 | Sep 23 | Apr 6 | Sep 23 |
| 1994 | May 27 | Oct 10 | Apr 8 | Oct 10 |
| 1993 | Apr 22 | Sep 30 | Apr 22 | Sep 30 |
| 1992 | May 28 | Sep 23 | May 28 | Oct 17 |
"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.