Fresno 5 Ne, CA: frost dates by year

Last spring and first fall frost at NOAA station USC00043256, 1999 to 2025, measured from daily minimum temperatures.

Elevation 338 ft, 36.767, -119.709. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Jan 30	Dec 6
Earliest	Jan 5 (2015)	Nov 25 (2010)
Latest	Apr 18 (2013)	Dec 31 (2014)
Trend	1.8 days later per decade	1.5 days later per decade
Years with data	18, 5 with no freeze	19, 3 with no freeze

At 28°F (hard freeze) the median last spring date is Jan 10 and the median first fall date is Dec 26.

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
2025	none	none	none	none
2024	Jan 8	none	none	none
2021	none	no data	none	no data
2019	no data	Nov 26	no data	none
2018	no data	Dec 30	no data	none
2017	no data	Dec 10	no data	none
2015	Jan 5	Nov 30	Jan 3	Dec 27
2014	none	Dec 31	none	none
2013	Apr 18	no data	Jan 14	no data
2012	Apr 7	no data	Jan 18	no data
2011	Mar 1	Dec 4	none	Dec 24
2010	no data	Nov 25	no data	none
2009	Jan 11	Dec 9	none	Dec 9
2008	Jan 30	Dec 14	none	none
2007	Jan 24	Dec 1	Jan 19	Dec 28
2006	Mar 4	Nov 29	none	none
2005	none	Nov 27	none	none
2004	Jan 26	Nov 29	none	none
2003	none	no data	none	no data
2002	no data	Dec 25	no data	none
2001	Feb 8	Dec 15	Jan 1	none
2000	Jan 9	none	Jan 3	none
1999	Feb 11	Dec 8	Jan 10	none

"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.