Porcupine South Dakota Weather Records (USR0000SPIN)

Record envelope, standing records and threshold days for Porcupine South Dakota (USR0000SPIN), South Dakota, United States, with 32 years of record.

Key Facts for Porcupine South Dakota

Porcupine South Dakota (USR0000SPIN) is a weather station in South Dakota, United States at 43.29 latitude and -102.27 longitude, 342 m (1,122 ft) above sea level.
The station reports from 1992 to 2023, 32 years of record.
1,464 records set at Porcupine South Dakota still stand.
Records are tracked for tmax, tmin: an element needs 30 years of data to be eligible.
Porcupine South Dakota tied a monthly record high minimum temperature of 17.8 C (64.0 F) on 10 October 2026 (provisional).

Provisional Records

Records set in the last 60 days are provisional until they clear the revision window.

About the Station

Location: South Dakota, United States, 43.29 latitude, -102.27 longitude.
Elevation: 342 m (1,122 ft).
Period of record: 1992 to 2023, 32 years.
Eligible elements: tmax, tmin.

Daily Record Envelope and 2026

30 days at or beyond a record

The band shows the record high and record low for each calendar day at Porcupine South Dakota. The lines show the 2026 daily maximum and minimum. 30 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Porcupine South Dakota, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	21.1 C (70.0 F)	-32.2 C (-26.0 F)	16.7 C (62.1 F)	-23.9 C (-11.0 F)
Feb	21.1 C (70.0 F)	-31.7 C (-25.1 F)	20.0 C (68.0 F)	-17.2 C (1.0 F)
Mar	31.7 C (89.1 F)	-26.1 C (-15.0 F)	31.7 C (89.1 F)	-15.6 C (3.9 F)
Apr	37.2 C (99.0 F)	-14.5 C (5.9 F)	31.1 C (88.0 F)	-5.0 C (23.0 F)
May	36.1 C (97.0 F)	-4.4 C (24.1 F)	31.7 C (89.1 F)	-1.1 C (30.0 F)
Jun	41.7 C (107.1 F)	0.0 C (32.0 F)	33.3 C (91.9 F)	7.8 C (46.0 F)
Jul	46.7 C (116.1 F)	8.3 C (46.9 F)	41.7 C (107.1 F)	13.9 C (57.0 F)
Aug	41.2 C (106.2 F)	5.0 C (41.0 F)	41.1 C (106.0 F)	10.0 C (50.0 F)
Sep	42.8 C (109.0 F)	-3.3 C (26.1 F)	35.6 C (96.1 F)	8.3 C (46.9 F)
Oct	33.3 C (91.9 F)	-18.3 C (-0.9 F)	31.7 C (89.1 F)	7.2 C (45.0 F)
Nov	27.2 C (81.0 F)	-22.8 C (-9.0 F)	n/a	n/a
Dec	20.0 C (68.0 F)	-32.9 C (-27.2 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Porcupine South Dakota still stand. 1996 holds the most, with 73.

Standing records at Porcupine South Dakota by the year they were set
Year set	Standing records
1992	41
1993	52
1994	36
1995	56
1996	73
1997	39
1998	67
1999	41
2000	47
2001	25
2002	46
2003	70
2004	33
2005	42
2006	43
2007	33
2008	25
2009	41
2010	20
2011	25
2012	46
2013	34
2014	54
2015	38
2016	37
2017	38
2018	42
2019	28
2020	47
2021	50
2022	41
2023	34
2024	32
2025	46
2026	42

All-Time Record Progression

3 new records

3 all-time records were set at Porcupine South Dakota between 22 December 2022 and 13 January 2024. Each dot is a new record.

When Porcupine South Dakota set new all-time records
Date	Kind	Detail
2022-12-22	Record low maximum temperature	Record low maximum temperature -23.4 C (-10.1 F)
2022-12-22	Record low minimum temperature	Record low minimum temperature -32.9 C (-27.2 F)
2024-01-13	Record low maximum temperature	Record low maximum temperature -25.0 C (-13.0 F)

Period of Record Coverage

1992 to 2026

35 years of record at Porcupine South Dakota, 1992 to 2026. 4 years have data for under 90 percent of days and are left out of rankings: 1992, 2003, 2008, 2026.

Days with data per year at Porcupine South Dakota
Year	Days with data	Share of year	Complete
1992	194	53%	No
1993	338	93%	Yes
1994	358	98%	Yes
1995	349	96%	Yes
1996	363	99%	Yes
1997	355	97%	Yes
1998	340	93%	Yes
1999	358	98%	Yes
2000	358	98%	Yes
2001	358	98%	Yes
2002	358	98%	Yes
2003	286	78%	No
2004	362	99%	Yes
2005	363	99%	Yes
2006	365	100%	Yes
2007	363	99%	Yes
2008	326	89%	No
2009	362	99%	Yes
2010	361	99%	Yes
2011	361	99%	Yes
2012	360	98%	Yes
2013	361	99%	Yes
2014	357	98%	Yes
2015	362	99%	Yes
2016	362	99%	Yes
2017	359	98%	Yes
2018	361	99%	Yes
2019	350	96%	Yes
2020	364	99%	Yes
2021	362	99%	Yes
2022	362	99%	Yes
2023	363	99%	Yes
2024	363	99%	Yes
2025	362	99%	Yes
2026	280	77%	No

Latest Records

Latest records at Porcupine South Dakota
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
10 October 2026	Porcupine South Dakota, US	monthly high min (Tie, Provisional)	17.8 C (64.0 F)	tie	34 years	5 of 100 (Routine)
10 October 2026	Porcupine South Dakota, US	daily high max (Tie, Provisional)	30.6 C (87.1 F)	tie	11 years	1 of 100 (Routine)
9 October 2026	Porcupine South Dakota, US	daily high max (Provisional)	31.7 C (89.1 F)	1.1 C (2.0 F)	23 years	10 of 100 (Routine)
6 October 2026	Porcupine South Dakota, US	daily high min (Provisional)	16.1 C (61.0 F)	3.3 C (5.9 F)	23 years	15 of 100 (Routine)
5 October 2026	Porcupine South Dakota, US	daily high max (Tie, Provisional)	30.6 C (87.1 F)	tie	16 years	1 of 100 (Routine)
21 August 2026	Porcupine South Dakota, US	daily high min (Tie, Provisional)	20.6 C (69.1 F)	tie	0 years	0 of 100 (Routine)
6 August 2026	Porcupine South Dakota, US	daily high max	36.7 C (98.1 F)	0.6 C (1.1 F)	24 years	11 of 100 (Routine)
5 August 2026	Porcupine South Dakota, US	daily low min (Tie)	11.7 C (53.1 F)	tie	33 years	3 of 100 (Routine)
2 August 2026	Porcupine South Dakota, US	daily high max	41.1 C (106.0 F)	1.9 C (3.4 F)	4 years	7 of 100 (Routine)
26 July 2026	Porcupine South Dakota, US	daily high min	25.0 C (77.0 F)	1.7 C (3.1 F)	3 years	8 of 100 (Routine)
26 July 2026	Porcupine South Dakota, US	daily high max	40.0 C (104.0 F)	2.2 C (4.0 F)	1 year	7 of 100 (Routine)
25 July 2026	Porcupine South Dakota, US	daily high max	41.7 C (107.1 F)	0.6 C (1.1 F)	23 years	10 of 100 (Routine)
25 July 2026	Porcupine South Dakota, US	daily high min (Tie)	25.0 C (77.0 F)	tie	23 years	2 of 100 (Routine)
12 July 2026	Porcupine South Dakota, US	daily high max	37.2 C (99.0 F)	1.1 C (2.0 F)	31 years	14 of 100 (Routine)
6 July 2026	Porcupine South Dakota, US	daily high min	21.1 C (70.0 F)	1.1 C (2.0 F)	24 years	13 of 100 (Routine)
25 June 2026	Porcupine South Dakota, US	daily low max	15.6 C (60.1 F)	1.1 C (2.0 F)	23 years	10 of 100 (Routine)
26 May 2026	Porcupine South Dakota, US	daily high min (Tie)	18.3 C (64.9 F)	tie	8 years	1 of 100 (Routine)
25 May 2026	Porcupine South Dakota, US	daily high max	31.1 C (88.0 F)	0.5 C (0.9 F)	8 years	5 of 100 (Routine)
24 May 2026	Porcupine South Dakota, US	daily high max	30.0 C (86.0 F)	2.8 C (5.0 F)	20 years	13 of 100 (Routine)
6 May 2026	Porcupine South Dakota, US	daily low min	-1.1 C (30.0 F)	1.1 C (2.0 F)	16 years	9 of 100 (Routine)

Climate Trend

29 complete years, 1994 to 2025

One stripe for each of 29 complete years at Porcupine South Dakota, 1994 to 2025. Blue stripes are years cooler than the station's own mean of 9.5 C (49.0 F); red stripes are warmer. The coolest year was 2019, at 7.5 C (45.4 F), and the warmest was 2012, at 11.4 C (52.5 F). The strongest colour marks a difference of 2.1 C (3.8 F).

Annual mean temperature at Porcupine South Dakota as warming stripes, 1994 to 2025
Year	Annual mean temperature	Difference from the station mean
1994	9.3 C	-0.20 C
1995	9.2 C	-0.30 C
1996	7.7 C	-1.81 C
1997	8.9 C	-0.58 C
1999	10.6 C	+1.11 C
2000	9.7 C	+0.23 C
2001	10.3 C	+0.84 C
2002	9.3 C	-0.19 C
2004	9.9 C	+0.38 C
2005	10.1 C	+0.67 C
2006	10.2 C	+0.74 C
2007	10.2 C	+0.70 C
2009	8.1 C	-1.37 C
2010	9.1 C	-0.40 C
2011	8.5 C	-0.96 C
2012	11.4 C	+1.91 C
2013	8.3 C	-1.16 C
2014	8.1 C	-1.41 C
2015	10.0 C	+0.53 C
2016	10.4 C	+0.96 C
2017	9.7 C	+0.23 C
2018	8.3 C	-1.14 C
2019	7.5 C	-2.02 C
2020	10.1 C	+0.61 C
2021	10.3 C	+0.86 C
2022	9.3 C	-0.22 C
2023	9.7 C	+0.24 C
2024	10.7 C	+1.25 C
2025	10.0 C	+0.49 C

This station does not have enough complete years (30 are needed) to fit a temperature trend.

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1992 to 2026

Yearly extremes at Porcupine South Dakota: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	46.7 C (116.1 F)	1998	39.4 C (102.9 F)	35
Coldest night (TNn)	-32.9 C (-27.2 F)	2022	-25.6 C (-14.1 F)	35

Hottest day (TXx)

The hottest day of the year at Porcupine South Dakota, 1992 to 2026. The record is 46.7 C (116.1 F) in 1998, marked on the chart; the median year is 39.4 C (102.9 F).

Hottest day (TXx) at Porcupine South Dakota by year
Year	Hottest day (TXx)
1992	41.1 C (106.0 F)
1993	35.6 C (96.1 F)
1994	37.8 C (100.0 F)
1995	38.9 C (102.0 F)
1996	36.7 C (98.1 F)
1997	37.2 C (99.0 F)
1998	46.7 C (116.1 F)
1999	37.2 C (99.0 F)
2000	39.4 C (102.9 F)
2001	38.9 C (102.0 F)
2002	41.1 C (106.0 F)
2003	42.8 C (109.0 F)
2004	40.0 C (104.0 F)
2005	40.6 C (105.1 F)
2006	42.8 C (109.0 F)
2007	41.7 C (107.1 F)
2008	37.8 C (100.0 F)
2009	36.1 C (97.0 F)
2010	38.3 C (100.9 F)
2011	37.8 C (100.0 F)
2012	40.6 C (105.1 F)
2013	36.7 C (98.1 F)
2014	39.4 C (102.9 F)
2015	38.3 C (100.9 F)
2016	39.4 C (102.9 F)
2017	39.4 C (102.9 F)
2018	39.4 C (102.9 F)
2019	37.8 C (100.0 F)
2020	39.4 C (102.9 F)
2021	39.5 C (103.1 F)
2022	42.2 C (108.0 F)
2023	38.3 C (100.9 F)
2024	38.9 C (102.0 F)
2025	38.3 C (100.9 F)
2026	41.7 C (107.1 F)

Coldest night (TNn)

The coldest night of the year at Porcupine South Dakota, 1992 to 2026. The record is -32.9 C (-27.2 F) in 2022, marked on the chart; the median year is -25.6 C (-14.1 F).

Coldest night (TNn) at Porcupine South Dakota by year
Year	Coldest night (TNn)
1992	-25.0 C (-13.0 F)
1993	-26.1 C (-15.0 F)
1994	-28.3 C (-18.9 F)
1995	-23.3 C (-9.9 F)
1996	-31.7 C (-25.1 F)
1997	-27.8 C (-18.0 F)
1998	-25.6 C (-14.1 F)
1999	-21.1 C (-6.0 F)
2000	-23.3 C (-9.9 F)
2001	-16.7 C (1.9 F)
2002	-22.2 C (-8.0 F)
2003	-25.6 C (-14.1 F)
2004	-23.9 C (-11.0 F)
2005	-22.8 C (-9.0 F)
2006	-27.2 C (-17.0 F)
2007	-25.0 C (-13.0 F)
2008	-28.9 C (-20.0 F)
2009	-23.3 C (-9.9 F)
2010	-24.4 C (-11.9 F)
2011	-27.2 C (-17.0 F)
2012	-22.8 C (-9.0 F)
2013	-23.9 C (-11.0 F)
2014	-25.6 C (-14.1 F)
2015	-20.0 C (-4.0 F)
2016	-25.6 C (-14.1 F)
2017	-27.2 C (-17.0 F)
2018	-22.8 C (-9.0 F)
2019	-26.1 C (-15.0 F)
2020	-17.7 C (0.1 F)
2021	-26.7 C (-16.1 F)
2022	-32.9 C (-27.2 F)
2023	-26.3 C (-15.3 F)
2024	-32.2 C (-26.0 F)
2025	-27.2 C (-17.0 F)
2026	-23.9 C (-11.0 F)

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Frost Dates and Growing Season

29 years with a frost

Across 29 years with a frost, the median last spring frost at Porcupine South Dakota falls on 8 May and the median first autumn frost on 9 October, which leaves a median of 158 days between them.

Fitted over all years, the growing season changes by +4.4 days per decade at this station.

Frost dates and growing season at Porcupine South Dakota
Measure	Median, all years	Earliest period	Recent period (1994 to 2025)	Recent against earliest	Fitted trend
Last spring frost	8 May	n/a	8 May	n/a	-0.7 days per decade
First autumn frost	9 October	n/a	9 October	n/a	+3.7 days per decade
Growing days	158 days	n/a	158 days	n/a	+4.4 days per decade

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Download the Data

Data for Porcupine South Dakota standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Porcupine South Dakota threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-13 (13 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-13. Last revised 13 October 2026 (2026-10-13).