Frost history / Md Sci Ctr Baltimore, MD
Md Sci Ctr Baltimore, MD: frost dates by year
Last spring and first fall frost at NOAA station USW00093784, 1999 to 2024, measured from daily minimum temperatures.
Elevation 20 ft, 39.281, -76.609. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Mar 20 | Nov 28 |
| Earliest | Feb 25 (2024) | Nov 9 (2003) |
| Latest | Apr 10 (2016) | Dec 31 (2012) |
| Trend | 3.1 days earlier per decade | 1.9 days earlier per decade |
| Years with data | 23 | 23 |
At 28°F (hard freeze) the median last spring date is Mar 9 and the median first fall date is Nov 30.
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 |
|---|---|---|---|---|
| 2024 | Feb 25 | Nov 30 | Jan 22 | Dec 22 |
| 2023 | Mar 20 | Nov 28 | Feb 4 | Nov 29 |
| 2019 | Mar 8 | Nov 9 | Mar 7 | Nov 13 |
| 2018 | Mar 20 | Nov 11 | Feb 8 | Nov 22 |
| 2017 | Mar 23 | Nov 10 | Mar 16 | Nov 11 |
| 2016 | Apr 10 | Dec 9 | Feb 19 | Dec 15 |
| 2015 | Mar 29 | Dec 19 | Mar 29 | none |
| 2014 | Mar 27 | Nov 15 | Mar 27 | Nov 18 |
| 2013 | Mar 22 | Nov 24 | Feb 21 | Nov 25 |
| 2012 | Mar 6 | Dec 31 | Feb 13 | none |
| 2011 | Mar 3 | Dec 19 | Mar 3 | none |
| 2010 | Feb 27 | Dec 4 | Feb 26 | Dec 7 |
| 2009 | Mar 24 | Dec 6 | Mar 24 | Dec 11 |
| 2008 | Mar 10 | Nov 18 | Feb 28 | Nov 19 |
| 2007 | Mar 18 | Nov 24 | Mar 9 | Dec 6 |
| 2006 | Mar 21 | Dec 5 | Feb 27 | Dec 8 |
| 2005 | Mar 15 | Nov 18 | Mar 10 | Nov 24 |
| 2004 | Apr 5 | Dec 4 | Mar 23 | Dec 15 |
| 2003 | Mar 31 | Nov 9 | Mar 11 | Nov 26 |
| 2002 | Mar 23 | Nov 27 | Mar 23 | Dec 1 |
| 2001 | Mar 28 | Dec 22 | Mar 27 | Dec 27 |
| 2000 | Mar 18 | Nov 20 | Mar 18 | Nov 22 |
| 1999 | Mar 12 | Nov 30 | Mar 10 | Dec 1 |
"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.