Frost history / St Peters 2 Se, MO
St Peters 2 Se, MO: frost dates by year
Last spring and first fall frost at NOAA station USC00237475, 1980 to 2015, measured from daily minimum temperatures.
Elevation 575 ft, 38.768, -90.589. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Apr 9 | Oct 28 |
| Earliest | Mar 22 (2005) | Oct 5 (1980) |
| Latest | Apr 24 (1984) | Nov 11 (2011) |
| Trend | 1.3 days earlier per decade | little change (less than half a day per decade) |
| Years with data | 23 | 23 |
At 28°F (hard freeze) the median last spring date is Mar 28 and the median first fall date is Nov 3.
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 5 | Oct 18 | Mar 29 | Nov 22 |
| 2014 | Apr 9 | Nov 1 | Mar 27 | Nov 2 |
| 2013 | Apr 21 | Oct 25 | Apr 3 | Oct 25 |
| 2012 | Apr 13 | Oct 9 | Mar 6 | Oct 29 |
| 2011 | Apr 6 | Nov 11 | Mar 28 | Nov 11 |
| 2010 | Mar 29 | Oct 29 | Mar 29 | Nov 6 |
| 2009 | Apr 12 | no data | Mar 14 | no data |
| 2008 | no data | Oct 28 | no data | Oct 28 |
| 2006 | Apr 10 | Oct 12 | Mar 27 | Oct 24 |
| 2005 | Mar 22 | Oct 26 | Mar 22 | Nov 17 |
| 2004 | Apr 3 | Nov 5 | Mar 23 | Nov 25 |
| 1993 | Apr 3 | no data | Mar 19 | no data |
| 1992 | Apr 3 | Oct 19 | Apr 3 | Nov 15 |
| 1991 | Mar 31 | Nov 2 | Mar 30 | Nov 2 |
| 1990 | Apr 13 | Oct 10 | Apr 8 | Dec 4 |
| 1989 | Apr 14 | Nov 3 | Apr 11 | Nov 3 |
| 1988 | Mar 31 | Oct 29 | Mar 19 | Oct 31 |
| 1987 | Apr 6 | Oct 12 | Apr 5 | Nov 11 |
| 1986 | Apr 23 | Nov 10 | Mar 22 | Nov 13 |
| 1985 | Apr 9 | Nov 4 | Apr 9 | Nov 20 |
| 1984 | Apr 24 | Nov 2 | Mar 14 | Nov 2 |
| 1983 | Apr 20 | Nov 5 | Apr 19 | Nov 17 |
| 1982 | Apr 21 | Oct 21 | Apr 8 | Oct 22 |
| 1981 | Mar 25 | Oct 23 | Mar 25 | Oct 24 |
| 1980 | no data | Oct 5 | no data | Oct 26 |
"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.