White Sulphur Springs #2 Weather Records (USC00248930)

Record envelope, standing records and threshold days for White Sulphur Springs #2 (USC00248930), Montana, United States, with 37 years of record.

Key Facts for White Sulphur Springs #2

White Sulphur Springs #2 (USC00248930) is a weather station in Montana, United States at 46.54 latitude and -110.90 longitude, 1,536 m (5,040 ft) above sea level.
The station reports from 1978 to 2014, 37 years of record.
1,464 records set at White Sulphur Springs #2 still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
White Sulphur Springs #2 tied a daily record high minimum temperature of 10.0 C (50.0 F) on 7 October 2014.

About the Station

Location: Montana, United States, 46.54 latitude, -110.90 longitude.
Elevation: 1,536 m (5,040 ft).
Period of record: 1978 to 2014, 37 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at White Sulphur Springs #2. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at White Sulphur Springs #2, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	15.0 C (59.0 F)	-38.3 C (-36.9 F)	n/a	n/a
Feb	16.7 C (62.1 F)	-41.7 C (-43.1 F)	n/a	n/a
Mar	22.2 C (72.0 F)	-30.6 C (-23.1 F)	n/a	n/a
Apr	27.2 C (81.0 F)	-18.9 C (-2.0 F)	n/a	n/a
May	30.6 C (87.1 F)	-10.0 C (14.0 F)	n/a	n/a
Jun	36.1 C (97.0 F)	-5.0 C (23.0 F)	n/a	n/a
Jul	37.2 C (99.0 F)	0.6 C (33.1 F)	n/a	n/a
Aug	36.7 C (98.1 F)	-5.0 C (23.0 F)	n/a	n/a
Sep	33.9 C (93.0 F)	-11.1 C (12.0 F)	n/a	n/a
Oct	30.6 C (87.1 F)	-27.8 C (-18.0 F)	n/a	n/a
Nov	20.6 C (69.1 F)	-34.4 C (-29.9 F)	n/a	n/a
Dec	14.4 C (57.9 F)	-43.3 C (-45.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at White Sulphur Springs #2 still stand. 1987 holds the most, with 73.

Standing records at White Sulphur Springs #2 by the year they were set
Year set	Standing records
1978	4
1979	29
1980	37
1981	14
1982	34
1983	46
1984	61
1985	44
1986	59
1987	73
1988	46
1989	48
1990	55
1991	44
1992	41
1993	39
1994	34
1995	44
1996	61
1997	43
1998	26
1999	32
2000	37
2001	34
2002	49
2003	60
2004	33
2005	49
2006	35
2007	34
2008	46
2009	40
2010	21
2011	26
2012	39
2013	23
2014	24

Wettest Day of Each Month

Apr: 65.0 mm (2.6 in)

The wettest day on record for each calendar month at White Sulphur Springs #2. The most was 65.0 mm (2.6 in) on 28 April 1991.

Record daily precipitation for each month at White Sulphur Springs #2
Month	Record daily precipitation (mm)	Date
Jan	15.0 mm (0.6 in)	10 January 1997
Feb	27.4 mm (1.1 in)	15 February 2001
Mar	20.3 mm (0.8 in)	25 March 1995
Apr	65.0 mm (2.6 in)	28 April 1991
May	50.8 mm (2.0 in)	31 May 1999
Jun	57.7 mm (2.3 in)	19 June 1979
Jul	53.8 mm (2.1 in)	3 July 1987
Aug	36.8 mm (1.4 in)	23 August 2014
Sep	36.6 mm (1.4 in)	7 September 1985
Oct	23.6 mm (0.9 in)	7 October 1985
Nov	19.6 mm (0.8 in)	19 November 1996
Dec	17.0 mm (0.7 in)	29 December 1996

Period of Record Coverage

1978 to 2014

37 years of record at White Sulphur Springs #2, 1978 to 2014. 12 years have data for under 90 percent of days and are left out of rankings: 1978, 1980, 1981, 1982, 1985, 1992, 1993, 1994 and others.

Days with data per year at White Sulphur Springs #2
Year	Days with data	Share of year	Complete
1978	30	8%	No
1979	336	92%	Yes
1980	250	68%	No
1981	186	51%	No
1982	292	80%	No
1983	344	94%	Yes
1984	344	94%	Yes
1985	278	76%	No
1986	338	93%	Yes
1987	352	96%	Yes
1988	341	93%	Yes
1989	359	98%	Yes
1990	342	94%	Yes
1991	333	91%	Yes
1992	307	84%	No
1993	272	75%	No
1994	250	68%	No
1995	306	84%	No
1996	303	83%	No
1997	337	92%	Yes
1998	312	85%	No
1999	346	95%	Yes
2000	357	98%	Yes
2001	350	96%	Yes
2002	353	97%	Yes
2003	341	93%	Yes
2004	356	97%	Yes
2005	359	98%	Yes
2006	355	97%	Yes
2007	343	94%	Yes
2008	363	99%	Yes
2009	356	98%	Yes
2010	348	95%	Yes
2011	345	95%	Yes
2012	346	95%	Yes
2013	333	91%	Yes
2014	269	74%	No

Latest Records

Latest records at White Sulphur Springs #2
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
7 October 2014	White Sulphur Springs #2, US	daily high min (Tie)	10.0 C (50.0 F)	tie	35 years	3 of 100 (Routine)
30 September 2014	White Sulphur Springs #2, US	daily rain	4.8 mm (0.19 in)	0.7 mm (0.03 in)	0 years	4 of 100 (Routine)
27 September 2014	White Sulphur Springs #2, US	daily rain	25.4 mm (1.0 in)	18.5 mm (0.7 in)	27 years	48 of 100 (Notable)
26 September 2014	White Sulphur Springs #2, US	daily high max	30.0 C (86.0 F)	1.1 C (2.0 F)	12 years	7 of 100 (Routine)
25 September 2014	White Sulphur Springs #2, US	daily high min	10.0 C (50.0 F)	2.2 C (4.0 F)	3 years	8 of 100 (Routine)
24 September 2014	White Sulphur Springs #2, US	daily high min	8.9 C (48.0 F)	1.7 C (3.1 F)	21 years	13 of 100 (Routine)
12 September 2014	White Sulphur Springs #2, US	daily low min	-5.0 C (23.0 F)	0.6 C (1.1 F)	24 years	11 of 100 (Routine)
11 September 2014	White Sulphur Springs #2, US	daily low max	5.6 C (42.1 F)	6.1 C (11.0 F)	24 years	19 of 100 (Routine)
10 September 2014	White Sulphur Springs #2, US	daily low max	9.4 C (48.9 F)	2.3 C (4.1 F)	24 years	13 of 100 (Routine)
6 September 2014	White Sulphur Springs #2, US	daily low min	-0.6 C (30.9 F)	1.2 C (2.2 F)	24 years	13 of 100 (Routine)
5 September 2014	White Sulphur Springs #2, US	daily low min (Tie)	-0.6 C (30.9 F)	tie	20 years	2 of 100 (Routine)
30 August 2014	White Sulphur Springs #2, US	daily high min	13.9 C (57.0 F)	1.7 C (3.1 F)	15 years	12 of 100 (Routine)
24 August 2014	White Sulphur Springs #2, US	daily rain	12.7 mm (0.5 in)	1.0 mm (0.04 in)	24 years	12 of 100 (Routine)
23 August 2014	White Sulphur Springs #2, US	monthly rain	36.8 mm (1.4 in)	5.8 mm (0.23 in)	21 years	31 of 100 (Routine)
22 August 2014	White Sulphur Springs #2, US	daily low max	16.1 C (61.0 F)	1.1 C (2.0 F)	28 years	13 of 100 (Routine)
14 August 2014	White Sulphur Springs #2, US	daily high min (Tie)	14.4 C (57.9 F)	tie	12 years	1 of 100 (Routine)
13 August 2014	White Sulphur Springs #2, US	daily high min	15.6 C (60.1 F)	2.3 C (4.1 F)	25 years	17 of 100 (Routine)
12 August 2014	White Sulphur Springs #2, US	daily high min	14.4 C (57.9 F)	2.2 C (4.0 F)	17 years	14 of 100 (Routine)
12 August 2014	White Sulphur Springs #2, US	daily high max (Tie)	33.3 C (91.9 F)	tie	7 years	1 of 100 (Routine)
5 August 2014	White Sulphur Springs #2, US	daily rain	10.4 mm (0.4 in)	7.4 mm (0.29 in)	20 years	20 of 100 (Routine)

Climate Trend

23 complete years, 1983 to 2012

One stripe for each of 23 complete years at White Sulphur Springs #2, 1983 to 2012. Blue stripes are years cooler than the station's own mean of 5.8 C (42.4 F); red stripes are warmer. The coolest year was 1996, at 4.2 C (39.5 F), and the warmest was 1988, at 7.1 C (44.8 F). The strongest colour marks a difference of 1.7 C (3.1 F).

Annual mean temperature at White Sulphur Springs #2 as warming stripes, 1983 to 2012
Year	Annual mean temperature	Difference from the station mean
1983	5.5 C	-0.32 C
1984	4.4 C	-1.45 C
1987	6.9 C	+1.08 C
1988	7.1 C	+1.30 C
1989	5.2 C	-0.61 C
1990	6.3 C	+0.52 C
1991	6.5 C	+0.66 C
1992	6.5 C	+0.67 C
1996	4.2 C	-1.63 C
1997	5.2 C	-0.56 C
1999	6.5 C	+0.69 C
2000	5.9 C	+0.07 C
2001	6.4 C	+0.63 C
2002	5.0 C	-0.80 C
2004	5.9 C	+0.10 C
2005	5.9 C	+0.08 C
2006	6.7 C	+0.85 C
2007	6.7 C	+0.93 C
2008	4.9 C	-0.95 C
2009	4.9 C	-0.86 C
2010	5.1 C	-0.71 C
2011	5.3 C	-0.55 C
2012	6.8 C	+0.96 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

1978 to 2014

Yearly extremes at White Sulphur Springs #2: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	37.2 C (99.0 F)	2002	33.9 C (93.0 F)	37
Coldest night (TNn)	-43.3 C (-45.9 F)	1983	-32.2 C (-26.0 F)	37
Wettest day (Rx1day)	65.0 mm (2.6 in)	1991	25.1 mm (1.0 in)	37
Wettest five days (Rx5day)	89.1 mm (3.5 in)	1992	38.6 mm (1.5 in)	37
Longest dry spell (CDD)	74 days	1983	30 days	37

Hottest day (TXx)

The hottest day of the year at White Sulphur Springs #2, 1978 to 2014. The record is 37.2 C (99.0 F) in 2002, marked on the chart; the median year is 33.9 C (93.0 F).

Hottest day (TXx) at White Sulphur Springs #2 by year
Year	Hottest day (TXx)
1978	4.4 C (39.9 F)
1979	33.9 C (93.0 F)
1980	32.2 C (90.0 F)
1981	33.9 C (93.0 F)
1982	32.8 C (91.0 F)
1983	34.4 C (93.9 F)
1984	33.3 C (91.9 F)
1985	32.2 C (90.0 F)
1986	32.2 C (90.0 F)
1987	31.7 C (89.1 F)
1988	34.4 C (93.9 F)
1989	33.9 C (93.0 F)
1990	36.1 C (97.0 F)
1991	34.4 C (93.9 F)
1992	32.8 C (91.0 F)
1993	28.9 C (84.0 F)
1994	33.9 C (93.0 F)
1995	32.8 C (91.0 F)
1996	33.3 C (91.9 F)
1997	30.6 C (87.1 F)
1998	34.4 C (93.9 F)
1999	33.9 C (93.0 F)
2000	36.1 C (97.0 F)
2001	36.7 C (98.1 F)
2002	37.2 C (99.0 F)
2003	36.1 C (97.0 F)
2004	34.4 C (93.9 F)
2005	34.4 C (93.9 F)
2006	35.6 C (96.1 F)
2007	37.2 C (99.0 F)
2008	34.4 C (93.9 F)
2009	32.2 C (90.0 F)
2010	33.3 C (91.9 F)
2011	33.9 C (93.0 F)
2012	34.4 C (93.9 F)
2013	34.4 C (93.9 F)
2014	33.3 C (91.9 F)

Coldest night (TNn)

The coldest night of the year at White Sulphur Springs #2, 1978 to 2014. The record is -43.3 C (-45.9 F) in 1983, marked on the chart; the median year is -32.2 C (-26.0 F).

Coldest night (TNn) at White Sulphur Springs #2 by year
Year	Coldest night (TNn)
1978	-36.7 C (-34.1 F)
1979	-35.0 C (-31.0 F)
1980	-33.3 C (-27.9 F)
1981	-23.3 C (-9.9 F)
1982	-32.2 C (-26.0 F)
1983	-43.3 C (-45.9 F)
1984	-30.6 C (-23.1 F)
1985	-34.4 C (-29.9 F)
1986	-34.4 C (-29.9 F)
1987	-27.2 C (-17.0 F)
1988	-28.9 C (-20.0 F)
1989	-41.7 C (-43.1 F)
1990	-38.3 C (-36.9 F)
1991	-31.1 C (-24.0 F)
1992	-30.0 C (-22.0 F)
1993	-34.4 C (-29.9 F)
1994	-37.2 C (-35.0 F)
1995	-29.4 C (-20.9 F)
1996	-38.9 C (-38.0 F)
1997	-37.2 C (-35.0 F)
1998	-35.6 C (-32.1 F)
1999	-25.0 C (-13.0 F)
2000	-31.1 C (-24.0 F)
2001	-26.1 C (-15.0 F)
2002	-26.1 C (-15.0 F)
2003	-23.3 C (-9.9 F)
2004	-37.8 C (-36.0 F)
2005	-32.2 C (-26.0 F)
2006	-32.8 C (-27.0 F)
2007	-29.4 C (-20.9 F)
2008	-33.9 C (-29.0 F)
2009	-29.4 C (-20.9 F)
2010	-30.0 C (-22.0 F)
2011	-32.2 C (-26.0 F)
2012	-24.4 C (-11.9 F)
2013	-33.3 C (-27.9 F)
2014	-37.8 C (-36.0 F)

Wettest day (Rx1day)

The wettest day of the year at White Sulphur Springs #2, 1978 to 2014. The record is 65.0 mm (2.6 in) in 1991, marked on the chart; the median year is 25.1 mm (1.0 in).

Wettest day (Rx1day) at White Sulphur Springs #2 by year
Year	Wettest day (Rx1day)
1978	3.3 mm (0.13 in)
1979	57.7 mm (2.3 in)
1980	23.9 mm (0.9 in)
1981	11.2 mm (0.4 in)
1982	14.0 mm (0.6 in)
1983	40.6 mm (1.6 in)
1984	32.0 mm (1.3 in)
1985	36.6 mm (1.4 in)
1986	23.4 mm (0.9 in)
1987	53.8 mm (2.1 in)
1988	20.1 mm (0.8 in)
1989	16.0 mm (0.6 in)
1990	17.5 mm (0.7 in)
1991	65.0 mm (2.6 in)
1992	33.0 mm (1.3 in)
1993	31.0 mm (1.2 in)
1994	29.2 mm (1.1 in)
1995	41.9 mm (1.6 in)
1996	22.9 mm (0.9 in)
1997	35.8 mm (1.4 in)
1998	19.1 mm (0.8 in)
1999	50.8 mm (2.0 in)
2000	15.0 mm (0.6 in)
2001	27.4 mm (1.1 in)
2002	26.2 mm (1.0 in)
2003	14.5 mm (0.6 in)
2004	30.5 mm (1.2 in)
2005	33.0 mm (1.3 in)
2006	45.7 mm (1.8 in)
2007	20.6 mm (0.8 in)
2008	17.0 mm (0.7 in)
2009	19.8 mm (0.8 in)
2010	22.1 mm (0.9 in)
2011	25.1 mm (1.0 in)
2012	9.9 mm (0.39 in)
2013	21.6 mm (0.9 in)
2014	36.8 mm (1.4 in)

Wettest five days (Rx5day)

The wettest five days of the year at White Sulphur Springs #2, 1978 to 2014. The record is 89.1 mm (3.5 in) in 1992, marked on the chart; the median year is 38.6 mm (1.5 in).

Wettest five days (Rx5day) at White Sulphur Springs #2 by year
Year	Wettest five days (Rx5day)
1978	5.6 mm (0.22 in)
1979	68.6 mm (2.7 in)
1980	37.7 mm (1.5 in)
1981	29.3 mm (1.2 in)
1982	35.9 mm (1.4 in)
1983	45.4 mm (1.8 in)
1984	34.3 mm (1.4 in)
1985	42.7 mm (1.7 in)
1986	56.9 mm (2.2 in)
1987	65.5 mm (2.6 in)
1988	23.9 mm (0.9 in)
1989	35.8 mm (1.4 in)
1990	31.5 mm (1.2 in)
1991	70.9 mm (2.8 in)
1992	89.1 mm (3.5 in)
1993	52.9 mm (2.1 in)
1994	41.9 mm (1.6 in)
1995	50.8 mm (2.0 in)
1996	34.7 mm (1.4 in)
1997	69.7 mm (2.7 in)
1998	36.3 mm (1.4 in)
1999	69.9 mm (2.8 in)
2000	31.2 mm (1.2 in)
2001	31.5 mm (1.2 in)
2002	38.6 mm (1.5 in)
2003	23.9 mm (0.9 in)
2004	56.4 mm (2.2 in)
2005	62.5 mm (2.5 in)
2006	57.5 mm (2.3 in)
2007	34.0 mm (1.3 in)
2008	46.9 mm (1.8 in)
2009	35.9 mm (1.4 in)
2010	41.7 mm (1.6 in)
2011	38.4 mm (1.5 in)
2012	17.5 mm (0.7 in)
2013	29.5 mm (1.2 in)
2014	74.7 mm (2.9 in)

Longest dry spell (CDD)

The longest dry spell of the year at White Sulphur Springs #2, 1978 to 2014. The record is 74 days in 1983, marked on the chart; the median year is 30 days.

Longest dry spell (CDD) at White Sulphur Springs #2 by year
Year	Longest dry spell (CDD)
1978	18 days
1979	29 days
1980	36 days
1981	30 days
1982	18 days
1983	74 days
1984	31 days
1985	21 days
1986	31 days
1987	27 days
1988	31 days
1989	19 days
1990	41 days
1991	34 days
1992	33 days
1993	18 days
1994	30 days
1995	20 days
1996	32 days
1997	30 days
1998	35 days
1999	49 days
2000	26 days
2001	35 days
2002	27 days
2003	20 days
2004	54 days
2005	38 days
2006	54 days
2007	33 days
2008	26 days
2009	22 days
2010	29 days
2011	25 days
2012	32 days
2013	20 days
2014	17 days

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

23 years with a frost

Across 23 years with a frost, the median last spring frost at White Sulphur Springs #2 falls on 4 June and the median first autumn frost on 8 September, which leaves a median of 91 days between them.

Frost dates and growing season at White Sulphur Springs #2
Measure	Median, all years	Earliest period	Recent period (1983 to 2012)	Recent against earliest	Fitted trend
Last spring frost	4 June	n/a	4 June	n/a	n/a
First autumn frost	8 September	n/a	8 September	n/a	n/a
Growing days	91 days	n/a	91 days	n/a	n/a

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 White Sulphur Springs #2 standing records by year: CSV or JSON. Field meanings are on the data page.
Data for White Sulphur Springs #2 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).