Record envelope, standing records and threshold days for Glad Valley 2 W (USC00393316), South Dakota, United States, with 78 years of record.
Key Facts for Glad Valley 2 W
Glad Valley 2 W (USC00393316) is a weather station in South Dakota, United States at 45.40 latitude and -101.81 longitude, 758 m (2,487 ft) above sea level.
The station reports from 1949 to 2026, 78 years of record.
1,464 records set at Glad Valley 2 W still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Glad Valley 2 W tied a daily record low minimum temperature of 10.0 C (50.0 F) on 7 August 2026.
About the Station
Location: South Dakota, United States, 45.40 latitude, -101.81 longitude.
Elevation: 758 m (2,487 ft).
Period of record: 1949 to 2026, 78 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
17 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 Glad Valley 2 W. The lines show the 2026 daily maximum and minimum. 17 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Glad Valley 2 W, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
20.6 C (69.1 F)
-37.8 C (-36.0 F)
13.3 C (55.9 F)
-32.2 C (-26.0 F)
Feb
22.2 C (72.0 F)
-38.9 C (-38.0 F)
17.2 C (63.0 F)
-18.9 C (-2.0 F)
Mar
27.8 C (82.0 F)
-33.3 C (-27.9 F)
26.7 C (80.1 F)
-19.4 C (-2.9 F)
Apr
34.4 C (93.9 F)
-19.4 C (-2.9 F)
29.4 C (84.9 F)
-7.2 C (19.0 F)
May
37.8 C (100.0 F)
-9.4 C (15.1 F)
32.2 C (90.0 F)
-4.4 C (24.1 F)
Jun
43.3 C (109.9 F)
1.1 C (34.0 F)
32.8 C (91.0 F)
6.1 C (43.0 F)
Jul
43.3 C (109.9 F)
2.8 C (37.0 F)
42.2 C (108.0 F)
12.8 C (55.0 F)
Aug
42.8 C (109.0 F)
0.6 C (33.1 F)
38.3 C (100.9 F)
7.8 C (46.0 F)
Sep
40.6 C (105.1 F)
-8.3 C (17.1 F)
n/a
n/a
Oct
36.7 C (98.1 F)
-21.7 C (-7.1 F)
n/a
n/a
Nov
26.1 C (79.0 F)
-27.2 C (-17.0 F)
n/a
n/a
Dec
21.7 C (71.1 F)
-37.2 C (-35.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Glad Valley 2 W still stand. 1992 holds the most, with 43.
Standing records at Glad Valley 2 W by the year they were set
Year set
Standing records
1958
7
1959
32
1960
26
1961
23
1962
24
1963
33
1964
25
1965
30
1966
26
1967
27
1968
21
1969
27
1970
15
1971
16
1972
30
1973
19
1974
20
1975
19
1976
17
1977
26
1978
10
1979
15
1980
25
1981
15
1982
11
1983
17
1985
42
1986
21
1987
31
1988
32
1989
30
1990
25
1991
34
1992
43
1993
19
1994
24
1995
26
1996
27
1997
25
1998
12
1999
24
2000
24
2001
23
2002
19
2003
21
2004
19
2005
21
2006
16
2007
14
2008
7
2009
20
2010
10
2011
11
2012
26
2013
10
2014
19
2015
24
2016
16
2017
23
2018
13
2019
20
2020
24
2021
27
2022
20
2023
14
2024
6
2025
30
2026
16
All-Time Record Progression
6 new records
6 all-time records were set at Glad Valley 2 W between 19 February 1986 and 25 April 1994. Each dot is a new record.
When Glad Valley 2 W set new all-time records
Date
Kind
Detail
1986-02-19
Record snow depth
Record snow depth 119.4 cm (47.0 in)
1986-02-23
Record snow depth
Record snow depth 121.9 cm (48.0 in)
1989-04-28
Record daily snowfall
Record daily snowfall 35.6 cm (14.0 in)
1990-07-24
Record daily precipitation
Record daily precipitation 102.9 mm (4.1 in)
1994-02-08
Record low minimum temperature
Record low minimum temperature -38.9 C (-38.0 F)
1994-04-25
Record daily snowfall
Record daily snowfall 45.7 cm (18.0 in)
Wettest Day of Each Month
Jul: 102.9 mm (4.1 in)
The wettest day on record for each calendar month at Glad Valley 2 W. The most was 102.9 mm (4.1 in) on 24 July 1990.
Record daily precipitation for each month at Glad Valley 2 W
Month
Record daily precipitation (mm)
Date
Jan
21.3 mm (0.8 in)
3 January 1997
Feb
21.8 mm (0.9 in)
12 February 1978
Mar
67.3 mm (2.6 in)
23 March 1950
Apr
53.8 mm (2.1 in)
19 April 1973
May
77.5 mm (3.1 in)
15 May 2025
Jun
99.1 mm (3.9 in)
7 June 1994
Jul
102.9 mm (4.1 in)
24 July 1990
Aug
62.2 mm (2.4 in)
28 August 2013
Sep
55.1 mm (2.2 in)
2 September 2009
Oct
76.2 mm (3.0 in)
5 October 2013
Nov
20.3 mm (0.8 in)
26 November 1989
Dec
23.9 mm (0.9 in)
26 December 2016
Period of Record Coverage
1958 to 2026
Complete yearUnder 90 percent of days
69 years of record at Glad Valley 2 W, 1958 to 2026. 21 years have data for under 90 percent of days and are left out of rankings: 1958, 1959, 1960, 1962, 1978, 1979, 1980, 1981 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 49 complete years at Glad Valley 2 W, 1961 to 2025. Blue stripes are years cooler than the station's own mean of 6.7 C (44.1 F); red stripes are warmer. The coolest year was 1996, at 4.3 C (39.7 F), and the warmest was 2006, at 8.7 C (47.6 F). The strongest colour marks a difference of 2.5 C (4.5 F).
Annual mean temperature at Glad Valley 2 W as warming stripes, 1961 to 2025
Year
Annual mean temperature
Difference from the station mean
1961
7.4 C
+0.70 C
1962
6.6 C
-0.16 C
1963
8.2 C
+1.47 C
1964
6.6 C
-0.17 C
1965
5.3 C
-1.43 C
1966
5.7 C
-1.06 C
1967
6.4 C
-0.31 C
1968
6.2 C
-0.49 C
1969
6.3 C
-0.46 C
1970
6.1 C
-0.61 C
1971
6.0 C
-0.71 C
1972
5.7 C
-1.03 C
1973
7.7 C
+0.92 C
1974
7.6 C
+0.88 C
1975
6.0 C
-0.69 C
1977
7.4 C
+0.62 C
1985
5.2 C
-1.55 C
1986
6.8 C
+0.07 C
1990
7.4 C
+0.69 C
1991
7.6 C
+0.85 C
1992
6.9 C
+0.16 C
1995
6.3 C
-0.39 C
1996
4.3 C
-2.45 C
1997
6.4 C
-0.31 C
1998
7.7 C
+0.95 C
1999
7.8 C
+1.02 C
2000
6.8 C
+0.04 C
2001
7.4 C
+0.70 C
2002
7.3 C
+0.56 C
2003
7.0 C
+0.31 C
2004
6.9 C
+0.18 C
2006
8.7 C
+1.96 C
2007
7.8 C
+1.05 C
2009
5.1 C
-1.66 C
2010
5.9 C
-0.86 C
2011
6.0 C
-0.78 C
2013
6.0 C
-0.73 C
2014
5.3 C
-1.40 C
2015
7.8 C
+1.08 C
2016
8.2 C
+1.48 C
2017
7.2 C
+0.42 C
2018
5.7 C
-1.03 C
2019
4.5 C
-2.20 C
2020
7.2 C
+0.48 C
2021
8.2 C
+1.49 C
2022
6.4 C
-0.30 C
2023
7.6 C
+0.87 C
2024
8.3 C
+1.54 C
2025
7.3 C
+0.53 C
The fitted trend in annual mean temperature here over 1961 to 2025 is 0.1 C (-0.1 to 0.2) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.1 F (-0.1 to 0.4) per decade. The slope is a straight line fitted to 49 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Glad Valley 2 W
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.1 C (-0.1 to 0.2) per decade
0.1 F (-0.1 to 0.4) per decade
1961 to 2025
49
Not clearly different from zero
Mean daily maximum
0.00 C (-0.18 to 0.18) per decade
0.00 F (-0.33 to 0.33) per decade
1961 to 2025
49
Not clearly different from zero
Mean daily minimum
0.14 C (0.03 to 0.26) per decade
0.3 F (0.1 to 0.5) per decade
1961 to 2025
49
Rise
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
1949 to 2026
Yearly extremes at Glad Valley 2 W: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
43.3 C (109.9 F)
1960
38.9 C (102.0 F)
69
Coldest night (TNn)
-38.9 C (-38.0 F)
1994
-31.1 C (-24.0 F)
69
Wettest day (Rx1day)
102.9 mm (4.1 in)
1990
43.5 mm (1.7 in)
78
Wettest five days (Rx5day)
155.8 mm (6.1 in)
2025
61.3 mm (2.4 in)
78
Longest dry spell (CDD)
98 days
1952
30 days
78
Hottest day (TXx)
The hottest day of the year at Glad Valley 2 W, 1949 to 2026. The record is 43.3 C (109.9 F) in 1960, marked on the chart; the median year is 38.9 C (102.0 F).
Hottest day (TXx) at Glad Valley 2 W by year
Year
Hottest day (TXx)
1949
n/a
1950
n/a
1951
n/a
1952
n/a
1953
n/a
1954
n/a
1955
n/a
1956
n/a
1957
n/a
1958
37.2 C (99.0 F)
1959
40.6 C (105.1 F)
1960
43.3 C (109.9 F)
1961
39.4 C (102.9 F)
1962
37.8 C (100.0 F)
1963
40.6 C (105.1 F)
1964
40.0 C (104.0 F)
1965
38.9 C (102.0 F)
1966
38.9 C (102.0 F)
1967
37.2 C (99.0 F)
1968
36.7 C (98.1 F)
1969
39.4 C (102.9 F)
1970
39.4 C (102.9 F)
1971
38.9 C (102.0 F)
1972
38.3 C (100.9 F)
1973
41.1 C (106.0 F)
1974
39.4 C (102.9 F)
1975
40.6 C (105.1 F)
1976
40.0 C (104.0 F)
1977
39.4 C (102.9 F)
1978
40.0 C (104.0 F)
1979
39.4 C (102.9 F)
1980
42.8 C (109.0 F)
1981
41.1 C (106.0 F)
1982
37.2 C (99.0 F)
1983
38.3 C (100.9 F)
1984
16.1 C (61.0 F)
1985
41.1 C (106.0 F)
1986
37.2 C (99.0 F)
1987
37.8 C (100.0 F)
1988
42.2 C (108.0 F)
1989
41.1 C (106.0 F)
1990
38.3 C (100.9 F)
1991
39.4 C (102.9 F)
1992
34.4 C (93.9 F)
1993
34.4 C (93.9 F)
1994
37.2 C (99.0 F)
1995
38.9 C (102.0 F)
1996
36.7 C (98.1 F)
1997
35.6 C (96.1 F)
1998
37.2 C (99.0 F)
1999
40.0 C (104.0 F)
2000
38.9 C (102.0 F)
2001
38.9 C (102.0 F)
2002
43.3 C (109.9 F)
2003
40.0 C (104.0 F)
2004
37.8 C (100.0 F)
2005
39.4 C (102.9 F)
2006
43.3 C (109.9 F)
2007
41.1 C (106.0 F)
2008
37.2 C (99.0 F)
2009
33.9 C (93.0 F)
2010
39.4 C (102.9 F)
2011
37.2 C (99.0 F)
2012
41.1 C (106.0 F)
2013
37.2 C (99.0 F)
2014
33.9 C (93.0 F)
2015
37.8 C (100.0 F)
2016
39.4 C (102.9 F)
2017
38.9 C (102.0 F)
2018
37.8 C (100.0 F)
2019
35.6 C (96.1 F)
2020
36.1 C (97.0 F)
2021
40.6 C (105.1 F)
2022
38.3 C (100.9 F)
2023
37.8 C (100.0 F)
2024
38.3 C (100.9 F)
2025
37.2 C (99.0 F)
2026
42.2 C (108.0 F)
Coldest night (TNn)
The coldest night of the year at Glad Valley 2 W, 1949 to 2026. The record is -38.9 C (-38.0 F) in 1994, marked on the chart; the median year is -31.1 C (-24.0 F).
Coldest night (TNn) at Glad Valley 2 W by year
Year
Coldest night (TNn)
1949
n/a
1950
n/a
1951
n/a
1952
n/a
1953
n/a
1954
n/a
1955
n/a
1956
n/a
1957
n/a
1958
-28.9 C (-20.0 F)
1959
-29.4 C (-20.9 F)
1960
-31.1 C (-24.0 F)
1961
-28.3 C (-18.9 F)
1962
-33.9 C (-29.0 F)
1963
-36.1 C (-33.0 F)
1964
-36.1 C (-33.0 F)
1965
-28.3 C (-18.9 F)
1966
-37.8 C (-36.0 F)
1967
-35.6 C (-32.1 F)
1968
-31.7 C (-25.1 F)
1969
-30.0 C (-22.0 F)
1970
-32.8 C (-27.0 F)
1971
-31.7 C (-25.1 F)
1972
-35.0 C (-31.0 F)
1973
-30.0 C (-22.0 F)
1974
-30.6 C (-23.1 F)
1975
-31.1 C (-24.0 F)
1976
-31.7 C (-25.1 F)
1977
-35.6 C (-32.1 F)
1978
-30.6 C (-23.1 F)
1979
-32.2 C (-26.0 F)
1980
-32.8 C (-27.0 F)
1981
-28.3 C (-18.9 F)
1982
-35.6 C (-32.1 F)
1983
-16.1 C (3.0 F)
1984
-27.8 C (-18.0 F)
1985
-30.0 C (-22.0 F)
1986
-25.6 C (-14.1 F)
1987
-21.7 C (-7.1 F)
1988
-34.4 C (-29.9 F)
1989
-36.1 C (-33.0 F)
1990
-37.2 C (-35.0 F)
1991
-27.2 C (-17.0 F)
1992
-27.8 C (-18.0 F)
1993
-28.3 C (-18.9 F)
1994
-38.9 C (-38.0 F)
1995
-29.4 C (-20.9 F)
1996
-35.0 C (-31.0 F)
1997
-31.1 C (-24.0 F)
1998
-33.3 C (-27.9 F)
1999
-29.4 C (-20.9 F)
2000
-31.7 C (-25.1 F)
2001
-27.2 C (-17.0 F)
2002
-25.6 C (-14.1 F)
2003
-30.0 C (-22.0 F)
2004
-30.0 C (-22.0 F)
2005
-31.7 C (-25.1 F)
2006
-26.7 C (-16.1 F)
2007
-30.0 C (-22.0 F)
2008
-29.4 C (-20.9 F)
2009
-30.6 C (-23.1 F)
2010
-31.1 C (-24.0 F)
2011
-29.4 C (-20.9 F)
2012
-25.6 C (-14.1 F)
2013
-30.0 C (-22.0 F)
2014
-30.0 C (-22.0 F)
2015
-26.7 C (-16.1 F)
2016
-31.7 C (-25.1 F)
2017
-32.8 C (-27.0 F)
2018
-36.1 C (-33.0 F)
2019
-31.7 C (-25.1 F)
2020
-28.9 C (-20.0 F)
2021
-35.0 C (-31.0 F)
2022
-31.1 C (-24.0 F)
2023
-30.6 C (-23.1 F)
2024
-33.9 C (-29.0 F)
2025
-35.0 C (-31.0 F)
2026
-32.2 C (-26.0 F)
Wettest day (Rx1day)
The wettest day of the year at Glad Valley 2 W, 1949 to 2026. The record is 102.9 mm (4.1 in) in 1990, marked on the chart; the median year is 43.5 mm (1.7 in).
Wettest day (Rx1day) at Glad Valley 2 W by year
Year
Wettest day (Rx1day)
1949
19.6 mm (0.8 in)
1950
67.3 mm (2.6 in)
1951
80.0 mm (3.1 in)
1952
25.9 mm (1.0 in)
1953
77.0 mm (3.0 in)
1954
50.0 mm (2.0 in)
1955
28.7 mm (1.1 in)
1956
33.8 mm (1.3 in)
1957
42.9 mm (1.7 in)
1958
57.4 mm (2.3 in)
1959
21.8 mm (0.9 in)
1960
37.1 mm (1.5 in)
1961
44.5 mm (1.8 in)
1962
36.3 mm (1.4 in)
1963
23.9 mm (0.9 in)
1964
39.6 mm (1.6 in)
1965
40.1 mm (1.6 in)
1966
40.9 mm (1.6 in)
1967
29.5 mm (1.2 in)
1968
43.7 mm (1.7 in)
1969
30.0 mm (1.2 in)
1970
56.9 mm (2.2 in)
1971
48.3 mm (1.9 in)
1972
57.4 mm (2.3 in)
1973
53.8 mm (2.1 in)
1974
27.4 mm (1.1 in)
1975
45.7 mm (1.8 in)
1976
58.7 mm (2.3 in)
1977
53.3 mm (2.1 in)
1978
23.9 mm (0.9 in)
1979
27.9 mm (1.1 in)
1980
20.3 mm (0.8 in)
1981
33.0 mm (1.3 in)
1982
49.8 mm (2.0 in)
1983
42.7 mm (1.7 in)
1984
14.0 mm (0.6 in)
1985
25.4 mm (1.0 in)
1986
77.5 mm (3.1 in)
1987
78.7 mm (3.1 in)
1988
25.4 mm (1.0 in)
1989
38.1 mm (1.5 in)
1990
102.9 mm (4.1 in)
1991
31.2 mm (1.2 in)
1992
29.2 mm (1.1 in)
1993
55.1 mm (2.2 in)
1994
99.1 mm (3.9 in)
1995
45.7 mm (1.8 in)
1996
54.1 mm (2.1 in)
1997
31.8 mm (1.3 in)
1998
42.2 mm (1.7 in)
1999
44.7 mm (1.8 in)
2000
47.0 mm (1.9 in)
2001
43.2 mm (1.7 in)
2002
21.6 mm (0.9 in)
2003
52.1 mm (2.1 in)
2004
56.6 mm (2.2 in)
2005
44.2 mm (1.7 in)
2006
33.0 mm (1.3 in)
2007
30.0 mm (1.2 in)
2008
56.4 mm (2.2 in)
2009
55.1 mm (2.2 in)
2010
45.7 mm (1.8 in)
2011
35.8 mm (1.4 in)
2012
30.5 mm (1.2 in)
2013
76.2 mm (3.0 in)
2014
60.7 mm (2.4 in)
2015
47.2 mm (1.9 in)
2016
48.3 mm (1.9 in)
2017
55.4 mm (2.2 in)
2018
62.7 mm (2.5 in)
2019
42.2 mm (1.7 in)
2020
41.4 mm (1.6 in)
2021
47.0 mm (1.9 in)
2022
36.6 mm (1.4 in)
2023
67.3 mm (2.6 in)
2024
39.1 mm (1.5 in)
2025
77.5 mm (3.1 in)
2026
27.7 mm (1.1 in)
Wettest five days (Rx5day)
The wettest five days of the year at Glad Valley 2 W, 1949 to 2026. The record is 155.8 mm (6.1 in) in 2025, marked on the chart; the median year is 61.3 mm (2.4 in).
Wettest five days (Rx5day) at Glad Valley 2 W by year
Year
Wettest five days (Rx5day)
1949
37.4 mm (1.5 in)
1950
85.6 mm (3.4 in)
1951
87.9 mm (3.5 in)
1952
49.8 mm (2.0 in)
1953
89.7 mm (3.5 in)
1954
59.9 mm (2.4 in)
1955
76.3 mm (3.0 in)
1956
48.8 mm (1.9 in)
1957
48.5 mm (1.9 in)
1958
94.2 mm (3.7 in)
1959
48.0 mm (1.9 in)
1960
37.4 mm (1.5 in)
1961
53.4 mm (2.1 in)
1962
83.4 mm (3.3 in)
1963
51.3 mm (2.0 in)
1964
67.8 mm (2.7 in)
1965
68.8 mm (2.7 in)
1966
40.9 mm (1.6 in)
1967
41.9 mm (1.6 in)
1968
61.0 mm (2.4 in)
1969
66.6 mm (2.6 in)
1970
77.2 mm (3.0 in)
1971
73.7 mm (2.9 in)
1972
60.1 mm (2.4 in)
1973
70.1 mm (2.8 in)
1974
63.4 mm (2.5 in)
1975
71.7 mm (2.8 in)
1976
61.7 mm (2.4 in)
1977
67.3 mm (2.6 in)
1978
37.3 mm (1.5 in)
1979
48.7 mm (1.9 in)
1980
37.1 mm (1.5 in)
1981
48.0 mm (1.9 in)
1982
84.4 mm (3.3 in)
1983
42.7 mm (1.7 in)
1984
21.6 mm (0.9 in)
1985
49.3 mm (1.9 in)
1986
86.4 mm (3.4 in)
1987
102.0 mm (4.0 in)
1988
25.4 mm (1.0 in)
1989
76.2 mm (3.0 in)
1990
130.8 mm (5.1 in)
1991
44.0 mm (1.7 in)
1992
51.5 mm (2.0 in)
1993
76.9 mm (3.0 in)
1994
15.0 mm (0.6 in)
1995
57.6 mm (2.3 in)
1996
92.0 mm (3.6 in)
1997
55.4 mm (2.2 in)
1998
62.4 mm (2.5 in)
1999
50.3 mm (2.0 in)
2000
57.6 mm (2.3 in)
2001
64.3 mm (2.5 in)
2002
31.0 mm (1.2 in)
2003
52.1 mm (2.1 in)
2004
101.1 mm (4.0 in)
2005
56.4 mm (2.2 in)
2006
67.1 mm (2.6 in)
2007
48.6 mm (1.9 in)
2008
124.9 mm (4.9 in)
2009
55.1 mm (2.2 in)
2010
55.6 mm (2.2 in)
2011
40.9 mm (1.6 in)
2012
35.8 mm (1.4 in)
2013
100.3 mm (3.9 in)
2014
142.8 mm (5.6 in)
2015
59.3 mm (2.3 in)
2016
99.2 mm (3.9 in)
2017
76.2 mm (3.0 in)
2018
73.4 mm (2.9 in)
2019
67.4 mm (2.7 in)
2020
61.6 mm (2.4 in)
2021
101.3 mm (4.0 in)
2022
68.3 mm (2.7 in)
2023
123.4 mm (4.9 in)
2024
48.8 mm (1.9 in)
2025
155.8 mm (6.1 in)
2026
36.6 mm (1.4 in)
Longest dry spell (CDD)
The longest dry spell of the year at Glad Valley 2 W, 1949 to 2026. The record is 98 days in 1952, marked on the chart; the median year is 30 days.
Longest dry spell (CDD) at Glad Valley 2 W by year
Year
Longest dry spell (CDD)
1949
36 days
1950
50 days
1951
31 days
1952
98 days
1953
62 days
1954
34 days
1955
33 days
1956
23 days
1957
28 days
1958
51 days
1959
31 days
1960
37 days
1961
32 days
1962
38 days
1963
27 days
1964
27 days
1965
23 days
1966
25 days
1967
24 days
1968
44 days
1969
36 days
1970
20 days
1971
36 days
1972
22 days
1973
26 days
1974
37 days
1975
30 days
1976
23 days
1977
20 days
1978
51 days
1979
63 days
1980
93 days
1981
46 days
1982
29 days
1983
27 days
1984
15 days
1985
56 days
1986
29 days
1987
35 days
1988
38 days
1989
35 days
1990
52 days
1991
44 days
1992
24 days
1993
19 days
1994
24 days
1995
23 days
1996
11 days
1997
17 days
1998
33 days
1999
24 days
2000
32 days
2001
35 days
2002
31 days
2003
26 days
2004
24 days
2005
29 days
2006
49 days
2007
31 days
2008
22 days
2009
22 days
2010
22 days
2011
24 days
2012
49 days
2013
22 days
2014
27 days
2015
28 days
2016
19 days
2017
30 days
2018
27 days
2019
18 days
2020
58 days
2021
78 days
2022
35 days
2023
25 days
2024
46 days
2025
30 days
2026
23 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
49 years with a frost
Across 49 years with a frost, the median last spring frost at Glad Valley 2 W falls on 13 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 +2.8 days per decade at this station.
Frost dates and growing season at Glad Valley 2 W
Measure
Median, all years
Earliest period
Recent period (1991 to 2025)
Recent against earliest
Fitted trend
Last spring frost
13 May
n/a
13 May
n/a
-0.3 days per decade
First autumn frost
27 September
n/a
2 October
n/a
+2.5 days per decade
Growing days
138 days
n/a
142 days
n/a
+2.8 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
59 years, 1950 to 2025
A day with at least 45.5 mm (1.8 in) of rain is expected about once in 2 years. A day with at least 99.3 mm (3.9 in) of rain is expected about once in 100 years.
Rainfall return levels at Glad Valley 2 W: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
45.5 mm (1.8 in)
5 years
61.0 mm (2.4 in)
10 years
70.7 mm (2.8 in)
25 years
82.6 mm (3.3 in)
50 years
91.1 mm (3.6 in)
100 years
99.3 mm (3.9 in)
Longer than the 59 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, 59 years of values from 1950 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: 102.9 mm (4.1 in) in 1990; 80.0 mm (3.1 in) in 1951; 78.7 mm (3.1 in) in 1987.
Station Changes
1 suspected
One change was suspected in the annual mean temperature of Glad Valley 2 W, at 1985. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1985 ran 0.3 C (0.5 F) lower than in the years before (likely change).
Suspected changes in the annual mean temperature at Glad Valley 2 W, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1985
-0.3
-0.5
likely
5
Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.
Climate Twins
2010 to 2025 against 1961 to 1990
Over 2010 to 2025, Glad Valley 2 W had a mean temperature of 6.8 C (44.2 F) and 541.5 mm (21.3 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Ludlow 3 SSE (United States, 129 km away), Redig 11 NE (United States, 122 km away) and Green Bay (United States, 1,081 km away).
Climate twins of Glad Valley 2 W: stations whose 1961 to 1990 climate is closest to its 2010 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 Glad Valley 2 W standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Glad Valley 2 W 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.