Record envelope, standing records and threshold days for Leiter 9N (USC00485506), Wyoming, United States, with 63 years of record.
Key Facts for Leiter 9N
Leiter 9N (USC00485506) is a weather station in Wyoming, United States at 44.85 latitude and -106.29 longitude, 1,268 m (4,160 ft) above sea level.
The station reports from 1964 to 2026, 63 years of record.
1,464 records set at Leiter 9N still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Leiter 9N set a daily record high maximum temperature of 40.0 C (104.0 F) on 8 August 2026.
About the Station
Location: Wyoming, United States, 44.85 latitude, -106.29 longitude.
Elevation: 1,268 m (4,160 ft).
Period of record: 1964 to 2026, 63 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
26 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 Leiter 9N. The lines show the 2026 daily maximum and minimum. 26 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Leiter 9N, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
18.3 C (64.9 F)
-36.7 C (-34.1 F)
17.8 C (64.0 F)
-24.4 C (-11.9 F)
Feb
21.7 C (71.1 F)
-37.2 C (-35.0 F)
21.7 C (71.1 F)
-18.3 C (-0.9 F)
Mar
28.9 C (84.0 F)
-28.3 C (-18.9 F)
28.9 C (84.0 F)
-13.9 C (7.0 F)
Apr
31.1 C (88.0 F)
-18.3 C (-0.9 F)
26.7 C (80.1 F)
-5.6 C (21.9 F)
May
35.0 C (95.0 F)
-9.4 C (15.1 F)
35.0 C (95.0 F)
-7.8 C (18.0 F)
Jun
41.1 C (106.0 F)
-0.6 C (30.9 F)
38.3 C (100.9 F)
5.6 C (42.1 F)
Jul
43.9 C (111.0 F)
3.3 C (37.9 F)
40.6 C (105.1 F)
17.8 C (64.0 F)
Aug
40.6 C (105.1 F)
1.1 C (34.0 F)
40.0 C (104.0 F)
4.4 C (39.9 F)
Sep
40.0 C (104.0 F)
-11.1 C (12.0 F)
n/a
n/a
Oct
33.3 C (91.9 F)
-25.0 C (-13.0 F)
n/a
n/a
Nov
25.0 C (77.0 F)
-28.9 C (-20.0 F)
n/a
n/a
Dec
22.8 C (73.0 F)
-37.8 C (-36.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Leiter 9N still stand. 1985 holds the most, with 50.
Standing records at Leiter 9N by the year they were set
Year set
Standing records
1964
6
1965
41
1966
34
1967
21
1968
30
1969
32
1970
18
1971
18
1972
40
1973
18
1974
11
1975
20
1976
9
1977
12
1978
16
1979
8
1980
27
1981
25
1982
20
1983
28
1984
19
1985
50
1986
22
1987
24
1988
31
1989
35
1990
26
1991
24
1992
39
1993
24
1994
16
1995
26
1996
34
1997
28
1998
14
1999
24
2000
31
2001
11
2002
34
2003
35
2004
17
2005
29
2006
30
2007
9
2008
15
2009
21
2010
14
2011
10
2012
19
2013
15
2014
22
2015
27
2016
21
2017
14
2018
12
2019
16
2020
37
2021
34
2022
25
2023
16
2024
25
2025
25
2026
30
All-Time Record Progression
6 new records
6 all-time records were set at Leiter 9N between 5 April 1997 and 13 June 2020. Each dot is a new record.
When Leiter 9N set new all-time records
Date
Kind
Detail
1997-04-05
Record daily snowfall
Record daily snowfall 35.6 cm (14.0 in)
2001-06-29
Record high minimum temperature
Record high minimum temperature 24.4 C (75.9 F)
2006-07-15
Record high maximum temperature
Record high maximum temperature 43.9 C (111.0 F)
2007-03-29
Record daily snowfall
Record daily snowfall 38.1 cm (15.0 in)
2007-03-30
Record snow depth
Record snow depth 55.9 cm (22.0 in)
2020-06-13
Record high minimum temperature
Record high minimum temperature 25.0 C (77.0 F)
Wettest Day of Each Month
Jun: 59.7 mm (2.4 in)
The wettest day on record for each calendar month at Leiter 9N. The most was 59.7 mm (2.4 in) on 7 June 1993.
Record daily precipitation for each month at Leiter 9N
Month
Record daily precipitation (mm)
Date
Jan
25.1 mm (1.0 in)
29 January 1965
Feb
28.4 mm (1.1 in)
22 February 2012
Mar
30.5 mm (1.2 in)
29 March 2007
Apr
48.3 mm (1.9 in)
20 April 1974
May
55.9 mm (2.2 in)
18 May 1978
Jun
59.7 mm (2.4 in)
7 June 1993
Jul
47.2 mm (1.9 in)
21 July 2002
Aug
44.2 mm (1.7 in)
20 August 1965
Sep
41.9 mm (1.6 in)
1 September 1986
Oct
46.0 mm (1.8 in)
26 October 1996
Nov
18.0 mm (0.7 in)
9 November 1978
Dec
18.5 mm (0.7 in)
14 December 2022
Period of Record Coverage
1964 to 2026
Complete yearUnder 90 percent of days
63 years of record at Leiter 9N, 1964 to 2026. 4 years have data for under 90 percent of days and are left out of rankings: 1964, 1979, 1980, 2026.
Cooler than the station meanWarmer than the station mean
One stripe for each of 53 complete years at Leiter 9N, 1965 to 2025. Blue stripes are years cooler than the station's own mean of 8.3 C (46.9 F); red stripes are warmer. The coolest year was 1993, at 6.3 C (43.4 F), and the warmest was 2006, at 9.8 C (49.7 F). The strongest colour marks a difference of 2.0 C (3.6 F).
Annual mean temperature at Leiter 9N as warming stripes, 1965 to 2025
Year
Annual mean temperature
Difference from the station mean
1965
7.4 C
-0.93 C
1966
8.4 C
+0.13 C
1967
8.0 C
-0.26 C
1969
7.6 C
-0.65 C
1970
7.6 C
-0.71 C
1971
7.4 C
-0.93 C
1972
7.4 C
-0.91 C
1973
8.1 C
-0.23 C
1974
8.5 C
+0.21 C
1975
7.0 C
-1.31 C
1976
8.6 C
+0.35 C
1977
8.0 C
-0.30 C
1981
9.6 C
+1.31 C
1982
6.8 C
-1.53 C
1983
8.2 C
-0.10 C
1984
8.0 C
-0.31 C
1985
7.0 C
-1.30 C
1986
8.6 C
+0.36 C
1987
9.4 C
+1.15 C
1988
9.6 C
+1.34 C
1989
7.4 C
-0.90 C
1990
8.4 C
+0.08 C
1991
8.6 C
+0.28 C
1992
8.8 C
+0.53 C
1993
6.3 C
-1.95 C
1994
8.7 C
+0.45 C
1995
8.0 C
-0.24 C
1996
6.7 C
-1.54 C
1998
9.2 C
+0.87 C
1999
9.6 C
+1.36 C
2000
8.4 C
+0.10 C
2001
9.3 C
+1.00 C
2002
8.2 C
-0.09 C
2003
9.1 C
+0.79 C
2004
9.4 C
+1.13 C
2005
9.2 C
+0.89 C
2006
9.8 C
+1.56 C
2007
8.8 C
+0.52 C
2008
7.5 C
-0.76 C
2009
7.5 C
-0.77 C
2010
8.2 C
-0.08 C
2011
8.0 C
-0.25 C
2013
8.2 C
-0.13 C
2015
9.5 C
+1.23 C
2016
9.5 C
+1.18 C
2017
8.4 C
+0.13 C
2018
7.5 C
-0.74 C
2019
6.6 C
-1.73 C
2020
8.9 C
+0.59 C
2022
7.9 C
-0.42 C
2023
8.0 C
-0.27 C
2024
9.7 C
+1.45 C
2025
8.6 C
+0.29 C
The fitted trend in annual mean temperature here over 1965 to 2025 is 0.13 C (-0.01 to 0.27) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.24 F (-0.01 to 0.49) per decade. The slope is a straight line fitted to 53 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Leiter 9N
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.13 C (-0.01 to 0.27) per decade
0.24 F (-0.01 to 0.49) per decade
1965 to 2025
53
Not clearly different from zero
Mean daily maximum
0.16 C (-0.01 to 0.33) per decade
0.29 F (-0.01 to 0.59) per decade
1965 to 2025
53
Not clearly different from zero
Mean daily minimum
0.10 C (-0.02 to 0.22) per decade
0.18 F (-0.04 to 0.40) per decade
1965 to 2025
53
Not clearly different from zero
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
1964 to 2026
Yearly extremes at Leiter 9N: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
43.9 C (111.0 F)
2006
38.9 C (102.0 F)
63
Coldest night (TNn)
-37.8 C (-36.0 F)
1983
-28.9 C (-20.0 F)
63
Wettest day (Rx1day)
59.7 mm (2.4 in)
1993
35.6 mm (1.4 in)
63
Wettest five days (Rx5day)
118.8 mm (4.7 in)
1978
50.5 mm (2.0 in)
63
Longest dry spell (CDD)
52 days
2012
29 days
63
Hottest day (TXx)
The hottest day of the year at Leiter 9N, 1964 to 2026. The record is 43.9 C (111.0 F) in 2006, marked on the chart; the median year is 38.9 C (102.0 F).
Hottest day (TXx) at Leiter 9N by year
Year
Hottest day (TXx)
1964
32.8 C (91.0 F)
1965
39.4 C (102.9 F)
1966
40.6 C (105.1 F)
1967
37.2 C (99.0 F)
1968
36.1 C (97.0 F)
1969
38.9 C (102.0 F)
1970
38.9 C (102.0 F)
1971
38.3 C (100.9 F)
1972
38.9 C (102.0 F)
1973
39.4 C (102.9 F)
1974
37.8 C (100.0 F)
1975
38.9 C (102.0 F)
1976
37.8 C (100.0 F)
1977
40.0 C (104.0 F)
1978
40.0 C (104.0 F)
1979
40.6 C (105.1 F)
1980
39.4 C (102.9 F)
1981
41.1 C (106.0 F)
1982
37.8 C (100.0 F)
1983
40.6 C (105.1 F)
1984
38.9 C (102.0 F)
1985
38.9 C (102.0 F)
1986
38.3 C (100.9 F)
1987
35.0 C (95.0 F)
1988
42.2 C (108.0 F)
1989
42.2 C (108.0 F)
1990
39.4 C (102.9 F)
1991
38.9 C (102.0 F)
1992
37.2 C (99.0 F)
1993
36.1 C (97.0 F)
1994
38.3 C (100.9 F)
1995
39.4 C (102.9 F)
1996
38.3 C (100.9 F)
1997
37.2 C (99.0 F)
1998
40.6 C (105.1 F)
1999
40.0 C (104.0 F)
2000
39.4 C (102.9 F)
2001
40.0 C (104.0 F)
2002
42.2 C (108.0 F)
2003
40.6 C (105.1 F)
2004
40.0 C (104.0 F)
2005
41.7 C (107.1 F)
2006
43.9 C (111.0 F)
2007
39.4 C (102.9 F)
2008
38.3 C (100.9 F)
2009
37.2 C (99.0 F)
2010
38.3 C (100.9 F)
2011
37.8 C (100.0 F)
2012
40.0 C (104.0 F)
2013
38.9 C (102.0 F)
2014
37.8 C (100.0 F)
2015
37.8 C (100.0 F)
2016
40.0 C (104.0 F)
2017
38.9 C (102.0 F)
2018
39.4 C (102.9 F)
2019
35.0 C (95.0 F)
2020
38.3 C (100.9 F)
2021
41.7 C (107.1 F)
2022
39.4 C (102.9 F)
2023
37.8 C (100.0 F)
2024
41.1 C (106.0 F)
2025
39.4 C (102.9 F)
2026
40.6 C (105.1 F)
Coldest night (TNn)
The coldest night of the year at Leiter 9N, 1964 to 2026. The record is -37.8 C (-36.0 F) in 1983, marked on the chart; the median year is -28.9 C (-20.0 F).
Coldest night (TNn) at Leiter 9N by year
Year
Coldest night (TNn)
1964
-33.9 C (-29.0 F)
1965
-26.7 C (-16.1 F)
1966
-27.2 C (-17.0 F)
1967
-27.2 C (-17.0 F)
1968
-32.8 C (-27.0 F)
1969
-27.8 C (-18.0 F)
1970
-30.6 C (-23.1 F)
1971
-30.0 C (-22.0 F)
1972
-33.3 C (-27.9 F)
1973
-32.8 C (-27.0 F)
1974
-30.6 C (-23.1 F)
1975
-26.7 C (-16.1 F)
1976
-27.2 C (-17.0 F)
1977
-32.2 C (-26.0 F)
1978
-35.0 C (-31.0 F)
1979
-33.9 C (-29.0 F)
1980
-30.0 C (-22.0 F)
1981
-29.4 C (-20.9 F)
1982
-31.7 C (-25.1 F)
1983
-37.8 C (-36.0 F)
1984
-30.6 C (-23.1 F)
1985
-31.7 C (-25.1 F)
1986
-28.9 C (-20.0 F)
1987
-20.6 C (-5.1 F)
1988
-25.0 C (-13.0 F)
1989
-36.1 C (-33.0 F)
1990
-37.8 C (-36.0 F)
1991
-27.2 C (-17.0 F)
1992
-26.7 C (-16.1 F)
1993
-31.1 C (-24.0 F)
1994
-27.8 C (-18.0 F)
1995
-26.1 C (-15.0 F)
1996
-37.2 C (-35.0 F)
1997
-36.7 C (-34.1 F)
1998
-30.6 C (-23.1 F)
1999
-20.0 C (-4.0 F)
2000
-26.7 C (-16.1 F)
2001
-27.2 C (-17.0 F)
2002
-23.3 C (-9.9 F)
2003
-27.8 C (-18.0 F)
2004
-28.3 C (-18.9 F)
2005
-29.4 C (-20.9 F)
2006
-28.3 C (-18.9 F)
2007
-26.7 C (-16.1 F)
2008
-29.4 C (-20.9 F)
2009
-27.8 C (-18.0 F)
2010
-24.4 C (-11.9 F)
2011
-28.3 C (-18.9 F)
2012
-21.1 C (-6.0 F)
2013
-28.9 C (-20.0 F)
2014
-31.7 C (-25.1 F)
2015
-24.4 C (-11.9 F)
2016
-28.9 C (-20.0 F)
2017
-27.8 C (-18.0 F)
2018
-26.7 C (-16.1 F)
2019
-28.3 C (-18.9 F)
2020
-20.6 C (-5.1 F)
2021
-30.0 C (-22.0 F)
2022
-33.9 C (-29.0 F)
2023
-30.6 C (-23.1 F)
2024
-36.1 C (-33.0 F)
2025
-31.1 C (-24.0 F)
2026
-24.4 C (-11.9 F)
Wettest day (Rx1day)
The wettest day of the year at Leiter 9N, 1964 to 2026. The record is 59.7 mm (2.4 in) in 1993, marked on the chart; the median year is 35.6 mm (1.4 in).
Wettest day (Rx1day) at Leiter 9N by year
Year
Wettest day (Rx1day)
1964
15.2 mm (0.6 in)
1965
45.0 mm (1.8 in)
1966
15.5 mm (0.6 in)
1967
34.3 mm (1.4 in)
1968
41.1 mm (1.6 in)
1969
32.0 mm (1.3 in)
1970
31.8 mm (1.3 in)
1971
30.7 mm (1.2 in)
1972
25.1 mm (1.0 in)
1973
28.7 mm (1.1 in)
1974
48.3 mm (1.9 in)
1975
38.9 mm (1.5 in)
1976
44.5 mm (1.8 in)
1977
36.3 mm (1.4 in)
1978
55.9 mm (2.2 in)
1979
18.5 mm (0.7 in)
1980
47.0 mm (1.9 in)
1981
44.2 mm (1.7 in)
1982
38.6 mm (1.5 in)
1983
14.2 mm (0.6 in)
1984
20.8 mm (0.8 in)
1985
21.6 mm (0.9 in)
1986
41.9 mm (1.6 in)
1987
31.8 mm (1.3 in)
1988
29.7 mm (1.2 in)
1989
19.1 mm (0.8 in)
1990
35.8 mm (1.4 in)
1991
33.0 mm (1.3 in)
1992
40.1 mm (1.6 in)
1993
59.7 mm (2.4 in)
1994
35.6 mm (1.4 in)
1995
35.1 mm (1.4 in)
1996
46.0 mm (1.8 in)
1997
21.6 mm (0.9 in)
1998
37.6 mm (1.5 in)
1999
24.6 mm (1.0 in)
2000
20.1 mm (0.8 in)
2001
37.6 mm (1.5 in)
2002
47.2 mm (1.9 in)
2003
33.0 mm (1.3 in)
2004
38.6 mm (1.5 in)
2005
33.5 mm (1.3 in)
2006
35.3 mm (1.4 in)
2007
57.4 mm (2.3 in)
2008
47.8 mm (1.9 in)
2009
33.0 mm (1.3 in)
2010
51.6 mm (2.0 in)
2011
35.1 mm (1.4 in)
2012
28.4 mm (1.1 in)
2013
43.9 mm (1.7 in)
2014
28.7 mm (1.1 in)
2015
21.6 mm (0.9 in)
2016
37.6 mm (1.5 in)
2017
46.5 mm (1.8 in)
2018
46.7 mm (1.8 in)
2019
22.9 mm (0.9 in)
2020
15.5 mm (0.6 in)
2021
43.2 mm (1.7 in)
2022
45.0 mm (1.8 in)
2023
40.1 mm (1.6 in)
2024
38.9 mm (1.5 in)
2025
45.0 mm (1.8 in)
2026
24.6 mm (1.0 in)
Wettest five days (Rx5day)
The wettest five days of the year at Leiter 9N, 1964 to 2026. The record is 118.8 mm (4.7 in) in 1978, marked on the chart; the median year is 50.5 mm (2.0 in).
Wettest five days (Rx5day) at Leiter 9N by year
Year
Wettest five days (Rx5day)
1964
26.1 mm (1.0 in)
1965
94.3 mm (3.7 in)
1966
24.1 mm (0.9 in)
1967
47.4 mm (1.9 in)
1968
41.4 mm (1.6 in)
1969
70.2 mm (2.8 in)
1970
40.9 mm (1.6 in)
1971
52.6 mm (2.1 in)
1972
28.9 mm (1.1 in)
1973
49.1 mm (1.9 in)
1974
48.8 mm (1.9 in)
1975
56.1 mm (2.2 in)
1976
87.1 mm (3.4 in)
1977
50.5 mm (2.0 in)
1978
118.8 mm (4.7 in)
1979
34.1 mm (1.3 in)
1980
50.3 mm (2.0 in)
1981
84.9 mm (3.3 in)
1982
43.9 mm (1.7 in)
1983
21.1 mm (0.8 in)
1984
43.5 mm (1.7 in)
1985
34.3 mm (1.4 in)
1986
56.2 mm (2.2 in)
1987
40.4 mm (1.6 in)
1988
40.4 mm (1.6 in)
1989
29.5 mm (1.2 in)
1990
44.9 mm (1.8 in)
1991
53.0 mm (2.1 in)
1992
56.1 mm (2.2 in)
1993
77.5 mm (3.1 in)
1994
58.8 mm (2.3 in)
1995
59.8 mm (2.4 in)
1996
64.3 mm (2.5 in)
1997
45.2 mm (1.8 in)
1998
50.3 mm (2.0 in)
1999
39.9 mm (1.6 in)
2000
25.4 mm (1.0 in)
2001
50.6 mm (2.0 in)
2002
90.6 mm (3.6 in)
2003
68.7 mm (2.7 in)
2004
41.2 mm (1.6 in)
2005
95.4 mm (3.8 in)
2006
41.9 mm (1.6 in)
2007
108.7 mm (4.3 in)
2008
95.3 mm (3.8 in)
2009
41.6 mm (1.6 in)
2010
80.1 mm (3.2 in)
2011
72.3 mm (2.8 in)
2012
34.0 mm (1.3 in)
2013
67.5 mm (2.7 in)
2014
45.8 mm (1.8 in)
2015
34.0 mm (1.3 in)
2016
60.7 mm (2.4 in)
2017
55.9 mm (2.2 in)
2018
52.6 mm (2.1 in)
2019
53.8 mm (2.1 in)
2020
30.8 mm (1.2 in)
2021
58.5 mm (2.3 in)
2022
52.6 mm (2.1 in)
2023
57.1 mm (2.2 in)
2024
39.4 mm (1.6 in)
2025
76.8 mm (3.0 in)
2026
32.7 mm (1.3 in)
Longest dry spell (CDD)
The longest dry spell of the year at Leiter 9N, 1964 to 2026. The record is 52 days in 2012, marked on the chart; the median year is 29 days.
Longest dry spell (CDD) at Leiter 9N by year
Year
Longest dry spell (CDD)
1964
19 days
1965
42 days
1966
24 days
1967
33 days
1968
16 days
1969
42 days
1970
27 days
1971
31 days
1972
26 days
1973
34 days
1974
24 days
1975
32 days
1976
37 days
1977
24 days
1978
33 days
1979
30 days
1980
24 days
1981
28 days
1982
32 days
1983
25 days
1984
20 days
1985
36 days
1986
26 days
1987
28 days
1988
33 days
1989
32 days
1990
20 days
1991
22 days
1992
48 days
1993
23 days
1994
27 days
1995
17 days
1996
23 days
1997
23 days
1998
45 days
1999
46 days
2000
19 days
2001
41 days
2002
28 days
2003
44 days
2004
33 days
2005
25 days
2006
43 days
2007
29 days
2008
31 days
2009
31 days
2010
20 days
2011
12 days
2012
52 days
2013
32 days
2014
30 days
2015
33 days
2016
23 days
2017
30 days
2018
29 days
2019
24 days
2020
46 days
2021
36 days
2022
20 days
2023
37 days
2024
44 days
2025
29 days
2026
24 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
53 years with a frost
Across 53 years with a frost, the median last spring frost at Leiter 9N falls on 14 May and the median first autumn frost on 27 September, which leaves a median of 138 days between them.
Fitted over all years, the growing season changes by +3.0 days per decade at this station.
Frost dates and growing season at Leiter 9N
Measure
Median, all years
Earliest period
Recent period (1992 to 2025)
Recent against earliest
Fitted trend
Last spring frost
14 May
n/a
13 May
n/a
-0.6 days per decade
First autumn frost
27 September
n/a
29 September
n/a
+2.4 days per decade
Growing days
138 days
n/a
142 days
n/a
+3.0 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
58 years, 1965 to 2025
A day with at least 36.6 mm (1.4 in) of rain is expected about once in 2 years. A day with at least 57.6 mm (2.3 in) of rain is expected about once in 100 years.
Rainfall return levels at Leiter 9N: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
36.6 mm (1.4 in)
5 years
45.7 mm (1.8 in)
10 years
50.0 mm (2.0 in)
25 years
53.9 mm (2.1 in)
50 years
56.0 mm (2.2 in)
100 years
57.6 mm (2.3 in)
Longer than the 58 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, 58 years of values from 1965 to 2025.
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: 59.7 mm (2.4 in) in 1993; 57.4 mm (2.3 in) in 2007; 55.9 mm (2.2 in) in 1978.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Climate Twins
2008 to 2025 against 1961 to 1990
Over 2008 to 2025, Leiter 9N had a mean temperature of 8.3 C (46.9 F) and 410.5 mm (16.2 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Thiokol Propulsion F S (United States, 606 km away), Rapid City Rgnl AP (United States, 272 km away) and Hemingford (United States, 382 km away).
Climate twins of Leiter 9N: stations whose 1961 to 1990 climate is closest to its 2008 to 2025 climate
Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.
Download the Data
Data for Leiter 9N standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Leiter 9N 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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.