Marcell 5NE, MN: frost dates by year

Last spring and first fall frost at NOAA station USC00215175, 1989 to 2005, measured from daily minimum temperatures.

Elevation 1,387 ft, 47.631, -93.652. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	May 12	Oct 2
Earliest	Apr 28 (2001)	Sep 15 (1993)
Latest	Jun 1 (2003)	Oct 11 (1992)
Trend	8.0 days later per decade	5.8 days later per decade
Years with data	14	17

At 28°F (hard freeze) the median last spring date is May 6 and the median first fall date is Oct 6.

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
2005	May 17	Oct 7	May 16	Oct 7
2004	May 28	Oct 4	May 15	Oct 5
2003	Jun 1	Sep 26	Jun 1	Oct 1
2002	May 25	Oct 3	May 20	Oct 7
2001	Apr 28	Sep 24	Apr 25	Oct 6
2000	no data	Oct 4	no data	Oct 6
1999	May 9	Oct 2	Apr 24	Oct 2
1998	May 10	Oct 2	Apr 18	Oct 2
1997	May 21	Oct 10	May 13	Oct 16
1996	May 13	Oct 2	May 12	Oct 7
1995	May 6	Sep 20	Apr 25	Sep 22
1994	May 10	Oct 10	May 6	Oct 31
1993	May 4	Sep 15	Apr 26	Oct 2
1992	May 25	Oct 11	May 5	Oct 14
1991	no data	Sep 20	no data	Oct 15
1990	May 11	Sep 23	May 2	Oct 7
1989	no data	Sep 22	no data	Oct 3

"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.