Frost history / Wadsworth 4 N, NV
Wadsworth 4 N, NV: frost dates by year
Last spring and first fall frost at NOAA station USC00268838, 1974 to 2000, measured from daily minimum temperatures.
Elevation 4,000 ft, 39.691, -119.290. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | May 18 | Oct 1 |
| Earliest | Apr 23 (1987) | Sep 6 (1996) |
| Latest | Jun 17 (1979) | Oct 19 (1979) |
| Trend | 8.5 days earlier per decade | 1.2 days later per decade |
| Years with data | 21 | 21 |
At 28°F (hard freeze) the median last spring date is May 2 and the median first fall date is Oct 7.
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 |
|---|---|---|---|---|
| 2000 | Jun 1 | no data | May 12 | no data |
| 1999 | May 16 | Sep 28 | May 16 | Oct 7 |
| 1998 | May 29 | Oct 3 | May 27 | Oct 5 |
| 1997 | May 2 | Oct 6 | May 2 | Oct 6 |
| 1996 | May 20 | Sep 6 | Apr 29 | Oct 17 |
| 1995 | May 13 | Sep 30 | Apr 24 | Oct 5 |
| 1994 | Apr 29 | Oct 8 | Apr 26 | Oct 8 |
| 1993 | May 9 | Sep 14 | Apr 28 | Sep 25 |
| 1992 | May 10 | Oct 6 | Apr 23 | Oct 7 |
| 1991 | May 18 | Oct 15 | May 18 | Oct 21 |
| 1990 | May 16 | Oct 8 | May 9 | Oct 8 |
| 1989 | no data | Oct 4 | no data | Oct 5 |
| 1988 | no data | Sep 13 | no data | Oct 30 |
| 1987 | Apr 23 | Sep 28 | Apr 21 | Oct 14 |
| 1983 | May 13 | no data | May 12 | no data |
| 1982 | May 31 | no data | May 10 | no data |
| 1981 | Jun 13 | Oct 1 | May 6 | Oct 2 |
| 1980 | Jun 5 | Sep 21 | Apr 16 | Oct 12 |
| 1979 | Jun 17 | Oct 19 | May 9 | Oct 21 |
| 1978 | May 30 | Sep 12 | Apr 21 | Sep 18 |
| 1977 | May 17 | Sep 16 | May 17 | Sep 22 |
| 1976 | Jun 13 | Oct 11 | Apr 28 | Oct 17 |
| 1975 | May 25 | Oct 7 | Apr 29 | Oct 7 |
| 1974 | no data | Sep 11 | no data | Sep 27 |
"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.