Frost history / Sparks, NV
Sparks, NV: frost dates by year
Last spring and first fall frost at NOAA station USC00267697, 1989 to 2021, measured from daily minimum temperatures.
Elevation 4,357 ft, 39.556, -119.733. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | May 6 | Oct 5 |
| Earliest | Apr 17 (2015) | Sep 16 (2006) |
| Latest | Jun 8 (2020) | Oct 26 (2015) |
| Trend | 0.8 days earlier per decade | little change (less than half a day per decade) |
| Years with data | 27 | 24 |
At 28°F (hard freeze) the median last spring date is Apr 19 and the median first fall date is Oct 17.
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 |
|---|---|---|---|---|
| 2021 | Apr 28 | Oct 12 | Mar 31 | Oct 19 |
| 2020 | Jun 8 | no data | Apr 14 | no data |
| 2019 | May 1 | Oct 2 | May 1 | Oct 2 |
| 2018 | Apr 30 | Oct 12 | Apr 3 | Oct 15 |
| 2017 | May 18 | Sep 23 | Apr 15 | Oct 13 |
| 2016 | Apr 26 | Oct 3 | Mar 31 | Nov 17 |
| 2015 | Apr 17 | Oct 26 | Apr 17 | Nov 5 |
| 2014 | May 12 | Oct 2 | Apr 6 | Nov 2 |
| 2013 | May 24 | Sep 27 | Apr 18 | Oct 5 |
| 2012 | May 6 | Oct 18 | Apr 8 | Oct 24 |
| 2011 | Jun 3 | no data | May 16 | no data |
| 2010 | May 29 | no data | May 23 | no data |
| 2009 | Apr 29 | Oct 1 | Apr 29 | Oct 5 |
| 2008 | May 2 | Oct 10 | May 2 | Oct 12 |
| 2006 | Apr 20 | Sep 16 | Apr 20 | Oct 18 |
| 2003 | Apr 30 | Oct 11 | Apr 19 | Nov 1 |
| 2002 | May 22 | Oct 3 | Apr 28 | Oct 3 |
| 2000 | May 12 | Sep 24 | May 11 | Oct 2 |
| 1999 | May 15 | Oct 7 | Apr 12 | Oct 17 |
| 1998 | no data | Oct 4 | no data | Oct 17 |
| 1996 | May 20 | no data | Apr 21 | no data |
| 1995 | Apr 25 | Oct 5 | Apr 22 | Oct 22 |
| 1994 | Apr 26 | Oct 7 | Apr 11 | Oct 16 |
| 1993 | Apr 27 | Sep 24 | Apr 19 | Oct 27 |
| 1992 | Apr 23 | Oct 7 | Apr 6 | Nov 8 |
| 1991 | May 27 | Oct 21 | Apr 18 | Oct 24 |
| 1990 | Jun 1 | Oct 8 | May 16 | Oct 8 |
| 1989 | May 19 | Oct 4 | Apr 25 | 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.