Hagerman 2 SW Weather Records (USC00103932)

Record envelope, standing records and threshold days for Hagerman 2 SW (USC00103932), Idaho, United States, with 37 years of record.

Key Facts for Hagerman 2 SW

Hagerman 2 SW (USC00103932) is a weather station in Idaho, United States at 42.81 latitude and -114.92 longitude, 883 m (2,897 ft) above sea level.
The station reports from 1982 to 2018, 37 years of record.
1,464 records set at Hagerman 2 SW still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Hagerman 2 SW set a daily record low maximum temperature of 25.0 C (77.0 F) on 29 June 2018.

About the Station

Location: Idaho, United States, 42.81 latitude, -114.92 longitude.
Elevation: 883 m (2,897 ft).
Period of record: 1982 to 2018, 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 Hagerman 2 SW. 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 Hagerman 2 SW, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	18.9 C (66.0 F)	-27.8 C (-18.0 F)	n/a	n/a
Feb	27.2 C (81.0 F)	-24.4 C (-11.9 F)	n/a	n/a
Mar	30.6 C (87.1 F)	-13.9 C (7.0 F)	n/a	n/a
Apr	37.8 C (100.0 F)	-8.3 C (17.1 F)	n/a	n/a
May	40.6 C (105.1 F)	-3.9 C (25.0 F)	n/a	n/a
Jun	42.2 C (108.0 F)	-1.1 C (30.0 F)	n/a	n/a
Jul	44.4 C (111.9 F)	3.3 C (37.9 F)	n/a	n/a
Aug	41.7 C (107.1 F)	0.0 C (32.0 F)	n/a	n/a
Sep	40.6 C (105.1 F)	-4.4 C (24.1 F)	n/a	n/a
Oct	36.1 C (97.0 F)	-12.2 C (10.0 F)	n/a	n/a
Nov	27.8 C (82.0 F)	-22.8 C (-9.0 F)	n/a	n/a
Dec	19.4 C (66.9 F)	-31.7 C (-25.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Hagerman 2 SW still stand. 1985 holds the most, with 75.

Standing records at Hagerman 2 SW by the year they were set
Year set	Standing records
1982	12
1983	38
1984	39
1985	75
1986	43
1987	53
1988	40
1989	46
1990	54
1991	34
1992	54
1993	57
1994	48
1995	57
1996	49
1997	44
1998	45
1999	38
2000	17
2001	36
2002	42
2003	49
2004	25
2005	30
2006	32
2007	29
2008	39
2009	38
2010	40
2011	12
2012	25
2013	47
2014	39
2015	45
2016	27
2017	43
2018	23

Wettest Day of Each Month

Sep: 37.3 mm (1.5 in)

The wettest day on record for each calendar month at Hagerman 2 SW. The most was 37.3 mm (1.5 in) on 5 September 2000.

Record daily precipitation for each month at Hagerman 2 SW
Month	Record daily precipitation (mm)	Date
Jan	28.7 mm (1.1 in)	20 January 2012
Feb	24.1 mm (0.9 in)	13 February 2017
Mar	23.4 mm (0.9 in)	28 March 1996
Apr	21.1 mm (0.8 in)	25 April 1994
May	24.4 mm (1.0 in)	16 May 2005
Jun	22.4 mm (0.9 in)	7 June 1993
Jul	23.1 mm (0.9 in)	23 July 1993
Aug	23.9 mm (0.9 in)	10 August 1983
Sep	37.3 mm (1.5 in)	5 September 2000
Oct	27.4 mm (1.1 in)	4 October 2009
Nov	26.9 mm (1.1 in)	18 November 1991
Dec	31.8 mm (1.3 in)	7 December 2016

Period of Record Coverage

1982 to 2018

37 years of record at Hagerman 2 SW, 1982 to 2018. 5 years have data for under 90 percent of days and are left out of rankings: 1982, 1984, 2000, 2011, 2018.

Days with data per year at Hagerman 2 SW
Year	Days with data	Share of year	Complete
1982	182	50%	No
1983	359	98%	Yes
1984	323	88%	No
1985	350	96%	Yes
1986	364	100%	Yes
1987	330	90%	Yes
1988	362	99%	Yes
1989	363	99%	Yes
1990	360	99%	Yes
1991	350	96%	Yes
1992	361	99%	Yes
1993	364	100%	Yes
1994	360	99%	Yes
1995	355	97%	Yes
1996	365	100%	Yes
1997	343	94%	Yes
1998	348	95%	Yes
1999	336	92%	Yes
2000	320	87%	No
2001	361	99%	Yes
2002	363	99%	Yes
2003	365	100%	Yes
2004	366	100%	Yes
2005	363	99%	Yes
2006	363	99%	Yes
2007	365	100%	Yes
2008	363	99%	Yes
2009	364	100%	Yes
2010	360	99%	Yes
2011	210	58%	No
2012	366	100%	Yes
2013	363	99%	Yes
2014	363	99%	Yes
2015	365	100%	Yes
2016	366	100%	Yes
2017	365	100%	Yes
2018	181	50%	No

Latest Records

Latest records at Hagerman 2 SW
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
29 June 2018	Hagerman 2 SW, US	daily low max	25.0 C (77.0 F)	0.6 C (1.1 F)	21 years	10 of 100 (Routine)
12 June 2018	Hagerman 2 SW, US	daily low min	3.9 C (39.0 F)	0.5 C (0.9 F)	24 years	11 of 100 (Routine)
26 May 2018	Hagerman 2 SW, US	daily rain	21.8 mm (0.9 in)	6.8 mm (0.27 in)	5 years	19 of 100 (Routine)
23 May 2018	Hagerman 2 SW, US	daily rain	6.9 mm (0.27 in)	3.3 mm (0.13 in)	23 years	16 of 100 (Routine)
12 May 2018	Hagerman 2 SW, US	daily rain	19.1 mm (0.8 in)	17.6 mm (0.7 in)	33 years	20 of 100 (Routine)
12 May 2018	Hagerman 2 SW, US	daily low max	10.0 C (50.0 F)	3.9 C (7.0 F)	17 years	14 of 100 (Routine)
7 May 2018	Hagerman 2 SW, US	daily high min (Tie)	11.1 C (52.0 F)	tie	28 years	2 of 100 (Routine)
28 April 2018	Hagerman 2 SW, US	daily high min	10.0 C (50.0 F)	2.8 C (5.0 F)	32 years	19 of 100 (Routine)
17 April 2018	Hagerman 2 SW, US	daily low max	10.6 C (51.1 F)	0.5 C (0.9 F)	12 years	6 of 100 (Routine)
11 April 2018	Hagerman 2 SW, US	daily rain	5.1 mm (0.20 in)	3.6 mm (0.14 in)	33 years	20 of 100 (Routine)
11 April 2018	Hagerman 2 SW, US	daily high min	7.8 C (46.0 F)	1.7 C (3.1 F)	15 years	11 of 100 (Routine)
10 April 2018	Hagerman 2 SW, US	daily rain	5.6 mm (0.22 in)	0.3 mm (0.01 in)	12 years	6 of 100 (Routine)
7 April 2018	Hagerman 2 SW, US	daily high min (Tie)	8.9 C (48.0 F)	tie	29 years	2 of 100 (Routine)
6 April 2018	Hagerman 2 SW, US	daily high min (Tie)	8.3 C (46.9 F)	tie	0 years	0 of 100 (Routine)
3 April 2018	Hagerman 2 SW, US	monthly low min (Tie)	-8.3 C (17.1 F)	tie	10 years	4 of 100 (Routine)
2 April 2018	Hagerman 2 SW, US	daily low max (Tie)	10.0 C (50.0 F)	tie	8 years	1 of 100 (Routine)
28 March 2018	Hagerman 2 SW, US	daily high min	6.1 C (43.0 F)	1.7 C (3.1 F)	28 years	15 of 100 (Routine)
25 March 2018	Hagerman 2 SW, US	daily low max (Tie)	7.8 C (46.0 F)	tie	35 years	3 of 100 (Routine)
22 March 2018	Hagerman 2 SW, US	daily high min	8.3 C (46.9 F)	2.7 C (4.9 F)	0 years	10 of 100 (Routine)
14 March 2018	Hagerman 2 SW, US	daily rain	8.9 mm (0.35 in)	3.1 mm (0.12 in)	23 years	16 of 100 (Routine)

Climate Trend

27 complete years, 1983 to 2017

One stripe for each of 27 complete years at Hagerman 2 SW, 1983 to 2017. Blue stripes are years cooler than the station's own mean of 11.0 C (51.9 F); red stripes are warmer. The coolest year was 1993, at 9.7 C (49.4 F), and the warmest was 1992, at 12.2 C (54.0 F). The strongest colour marks a difference of 1.4 C (2.5 F).

Annual mean temperature at Hagerman 2 SW as warming stripes, 1983 to 2017
Year	Annual mean temperature	Difference from the station mean
1983	10.8 C	-0.19 C
1986	11.3 C	+0.28 C
1988	11.4 C	+0.33 C
1989	10.5 C	-0.52 C
1990	11.2 C	+0.16 C
1991	11.4 C	+0.38 C
1992	12.2 C	+1.18 C
1993	9.7 C	-1.34 C
1994	11.7 C	+0.69 C
1995	11.9 C	+0.83 C
2000	10.9 C	-0.12 C
2001	11.0 C	-0.04 C
2002	10.3 C	-0.78 C
2003	12.2 C	+1.15 C
2004	10.9 C	-0.11 C
2005	10.6 C	-0.44 C
2006	11.3 C	+0.22 C
2007	11.5 C	+0.44 C
2008	10.2 C	-0.88 C
2009	10.4 C	-0.66 C
2010	10.7 C	-0.30 C
2012	11.2 C	+0.17 C
2013	10.2 C	-0.79 C
2014	11.0 C	-0.01 C
2015	11.7 C	+0.62 C
2016	11.3 C	+0.29 C
2017	10.4 C	-0.60 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

1982 to 2018

Yearly extremes at Hagerman 2 SW: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	44.4 C (111.9 F)	1998	40.0 C (104.0 F)	37
Coldest night (TNn)	-31.7 C (-25.1 F)	1990	-18.3 C (-0.9 F)	37
Wettest day (Rx1day)	37.3 mm (1.5 in)	2000	22.4 mm (0.9 in)	37
Wettest five days (Rx5day)	74.6 mm (2.9 in)	2000	32.8 mm (1.3 in)	37
Longest dry spell (CDD)	132 days	1988	55 days	37

Hottest day (TXx)

The hottest day of the year at Hagerman 2 SW, 1982 to 2018. The record is 44.4 C (111.9 F) in 1998, marked on the chart; the median year is 40.0 C (104.0 F).

Hottest day (TXx) at Hagerman 2 SW by year
Year	Hottest day (TXx)
1982	36.7 C (98.1 F)
1983	38.3 C (100.9 F)
1984	40.0 C (104.0 F)
1985	39.4 C (102.9 F)
1986	37.8 C (100.0 F)
1987	38.9 C (102.0 F)
1988	40.0 C (104.0 F)
1989	38.9 C (102.0 F)
1990	40.0 C (104.0 F)
1991	40.0 C (104.0 F)
1992	41.7 C (107.1 F)
1993	37.2 C (99.0 F)
1994	42.2 C (108.0 F)
1995	40.6 C (105.1 F)
1996	41.1 C (106.0 F)
1997	41.1 C (106.0 F)
1998	44.4 C (111.9 F)
1999	40.0 C (104.0 F)
2000	41.7 C (107.1 F)
2001	41.7 C (107.1 F)
2002	43.9 C (111.0 F)
2003	43.3 C (109.9 F)
2004	39.4 C (102.9 F)
2005	41.7 C (107.1 F)
2006	43.3 C (109.9 F)
2007	41.7 C (107.1 F)
2008	41.1 C (106.0 F)
2009	40.6 C (105.1 F)
2010	40.0 C (104.0 F)
2011	36.7 C (98.1 F)
2012	38.9 C (102.0 F)
2013	40.0 C (104.0 F)
2014	40.6 C (105.1 F)
2015	40.6 C (105.1 F)
2016	39.4 C (102.9 F)
2017	39.4 C (102.9 F)
2018	36.1 C (97.0 F)

Coldest night (TNn)

The coldest night of the year at Hagerman 2 SW, 1982 to 2018. The record is -31.7 C (-25.1 F) in 1990, marked on the chart; the median year is -18.3 C (-0.9 F).

Coldest night (TNn) at Hagerman 2 SW by year
Year	Coldest night (TNn)
1982	-15.0 C (5.0 F)
1983	-21.7 C (-7.1 F)
1984	-27.8 C (-18.0 F)
1985	-22.2 C (-8.0 F)
1986	-13.3 C (8.1 F)
1987	-21.7 C (-7.1 F)
1988	-18.9 C (-2.0 F)
1989	-22.8 C (-9.0 F)
1990	-31.7 C (-25.1 F)
1991	-18.3 C (-0.9 F)
1992	-21.7 C (-7.1 F)
1993	-18.3 C (-0.9 F)
1994	-16.1 C (3.0 F)
1995	-14.4 C (6.1 F)
1996	-24.4 C (-11.9 F)
1997	-15.6 C (3.9 F)
1998	-19.4 C (-2.9 F)
1999	-11.7 C (10.9 F)
2000	-11.1 C (12.0 F)
2001	-13.9 C (7.0 F)
2002	-16.1 C (3.0 F)
2003	-12.8 C (9.0 F)
2004	-15.6 C (3.9 F)
2005	-17.8 C (0.0 F)
2006	-15.0 C (5.0 F)
2007	-17.2 C (1.0 F)
2008	-20.0 C (-4.0 F)
2009	-20.6 C (-5.1 F)
2010	-22.8 C (-9.0 F)
2011	-16.7 C (1.9 F)
2012	-14.4 C (6.1 F)
2013	-22.8 C (-9.0 F)
2014	-15.6 C (3.9 F)
2015	-18.9 C (-2.0 F)
2016	-20.6 C (-5.1 F)
2017	-27.8 C (-18.0 F)
2018	-12.2 C (10.0 F)

Wettest day (Rx1day)

The wettest day of the year at Hagerman 2 SW, 1982 to 2018. The record is 37.3 mm (1.5 in) in 2000, marked on the chart; the median year is 22.4 mm (0.9 in).

Wettest day (Rx1day) at Hagerman 2 SW by year
Year	Wettest day (Rx1day)
1982	21.6 mm (0.9 in)
1983	23.9 mm (0.9 in)
1984	21.1 mm (0.8 in)
1985	15.5 mm (0.6 in)
1986	23.6 mm (0.9 in)
1987	16.3 mm (0.6 in)
1988	22.4 mm (0.9 in)
1989	15.7 mm (0.6 in)
1990	21.6 mm (0.9 in)
1991	26.9 mm (1.1 in)
1992	18.8 mm (0.7 in)
1993	23.1 mm (0.9 in)
1994	21.1 mm (0.8 in)
1995	19.6 mm (0.8 in)
1996	30.2 mm (1.2 in)
1997	27.7 mm (1.1 in)
1998	25.9 mm (1.0 in)
1999	16.5 mm (0.6 in)
2000	37.3 mm (1.5 in)
2001	19.1 mm (0.8 in)
2002	20.3 mm (0.8 in)
2003	21.6 mm (0.9 in)
2004	31.0 mm (1.2 in)
2005	26.9 mm (1.1 in)
2006	26.4 mm (1.0 in)
2007	13.0 mm (0.5 in)
2008	18.8 mm (0.7 in)
2009	27.4 mm (1.1 in)
2010	26.7 mm (1.1 in)
2011	14.5 mm (0.6 in)
2012	28.7 mm (1.1 in)
2013	10.9 mm (0.4 in)
2014	27.2 mm (1.1 in)
2015	22.4 mm (0.9 in)
2016	31.8 mm (1.3 in)
2017	24.1 mm (0.9 in)
2018	23.4 mm (0.9 in)

Wettest five days (Rx5day)

The wettest five days of the year at Hagerman 2 SW, 1982 to 2018. The record is 74.6 mm (2.9 in) in 2000, marked on the chart; the median year is 32.8 mm (1.3 in).

Wettest five days (Rx5day) at Hagerman 2 SW by year
Year	Wettest five days (Rx5day)
1982	39.4 mm (1.6 in)
1983	38.9 mm (1.5 in)
1984	36.2 mm (1.4 in)
1985	22.9 mm (0.9 in)
1986	40.9 mm (1.6 in)
1987	30.0 mm (1.2 in)
1988	25.7 mm (1.0 in)
1989	32.3 mm (1.3 in)
1990	38.4 mm (1.5 in)
1991	32.8 mm (1.3 in)
1992	24.1 mm (0.9 in)
1993	52.2 mm (2.1 in)
1994	29.5 mm (1.2 in)
1995	28.5 mm (1.1 in)
1996	55.0 mm (2.2 in)
1997	38.4 mm (1.5 in)
1998	47.5 mm (1.9 in)
1999	36.3 mm (1.4 in)
2000	74.6 mm (2.9 in)
2001	27.2 mm (1.1 in)
2002	25.2 mm (1.0 in)
2003	22.9 mm (0.9 in)
2004	47.5 mm (1.9 in)
2005	63.3 mm (2.5 in)
2006	61.5 mm (2.4 in)
2007	20.1 mm (0.8 in)
2008	26.9 mm (1.1 in)
2009	34.0 mm (1.3 in)
2010	31.0 mm (1.2 in)
2011	25.9 mm (1.0 in)
2012	66.5 mm (2.6 in)
2013	16.0 mm (0.6 in)
2014	34.8 mm (1.4 in)
2015	41.5 mm (1.6 in)
2016	32.5 mm (1.3 in)
2017	24.9 mm (1.0 in)
2018	30.0 mm (1.2 in)

Longest dry spell (CDD)

The longest dry spell of the year at Hagerman 2 SW, 1982 to 2018. The record is 132 days in 1988, marked on the chart; the median year is 55 days.

Longest dry spell (CDD) at Hagerman 2 SW by year
Year	Longest dry spell (CDD)
1982	46 days
1983	38 days
1984	36 days
1985	51 days
1986	65 days
1987	71 days
1988	132 days
1989	38 days
1990	63 days
1991	60 days
1992	55 days
1993	42 days
1994	90 days
1995	55 days
1996	33 days
1997	40 days
1998	34 days
1999	64 days
2000	50 days
2001	63 days
2002	76 days
2003	74 days
2004	56 days
2005	70 days
2006	93 days
2007	104 days
2008	57 days
2009	54 days
2010	42 days
2011	38 days
2012	51 days
2013	48 days
2014	48 days
2015	39 days
2016	56 days
2017	66 days
2018	27 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

27 years with a frost

Across 27 years with a frost, the median last spring frost at Hagerman 2 SW falls on 3 May and the median first autumn frost on 25 September, which leaves a median of 145 days between them.

Fitted over all years, the growing season changes by +7.7 days per decade at this station.

Frost dates and growing season at Hagerman 2 SW
Measure	Median, all years	Earliest period	Recent period (1983 to 2017)	Recent against earliest	Fitted trend
Last spring frost	3 May	n/a	3 May	n/a	-0.7 days per decade
First autumn frost	25 September	n/a	25 September	n/a	+7.0 days per decade
Growing days	145 days	n/a	145 days	n/a	+7.7 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.

Rainfall Return Levels

32 years, 1983 to 2017

A day with at least 23.4 mm (0.9 in) of rain is expected about once in 2 years. A day with at least 35.6 mm (1.4 in) of rain is expected about once in 100 years.

Rainfall return levels at Hagerman 2 SW: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	23.4 mm (0.9 in)
5 years	28.4 mm (1.1 in)
10 years	30.8 mm (1.2 in)
25 years	33.2 mm (1.3 in)
50 years	34.5 mm (1.4 in)	Longer than the 32 years of record
100 years	35.6 mm (1.4 in)	Longer than the 32 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 32 years of values from 1983 to 2017.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 37.3 mm (1.5 in) in 2000; 31.8 mm (1.3 in) in 2016; 31.0 mm (1.2 in) in 2004.

Download the Data

Data for Hagerman 2 SW standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Hagerman 2 SW 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 2026-10-17 (17 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).