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
Record highRecord low2026 daily maximum2026 daily minimum
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
Year with most
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
Complete yearUnder 90 percent of days
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.
Cooler than the station meanWarmer than the station mean
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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.