Record envelope, standing records and threshold days for Ardmore 1 NW (USC00390236), South Dakota, United States, with 106 years of record.
Key Facts for Ardmore 1 NW
Ardmore 1 NW (USC00390236) is a weather station in South Dakota, United States at 43.03 latitude and -103.66 longitude, 1,079 m (3,540 ft) above sea level.
The station reports from 1908 to 2013, 106 years of record.
1,464 records set at Ardmore 1 NW still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Ardmore 1 NW set a daily record high minimum temperature of 15.0 C (59.0 F) on 22 September 2013.
About the Station
Location: South Dakota, United States, 43.03 latitude, -103.66 longitude.
Elevation: 1,079 m (3,540 ft).
Period of record: 1908 to 2013, 106 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 Ardmore 1 NW. 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 Ardmore 1 NW, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
22.2 C (72.0 F)
-38.3 C (-36.9 F)
n/a
n/a
Feb
23.3 C (73.9 F)
-37.8 C (-36.0 F)
n/a
n/a
Mar
29.4 C (84.9 F)
-33.9 C (-29.0 F)
n/a
n/a
Apr
33.9 C (93.0 F)
-22.8 C (-9.0 F)
n/a
n/a
May
37.8 C (100.0 F)
-8.9 C (16.0 F)
n/a
n/a
Jun
43.3 C (109.9 F)
-4.4 C (24.1 F)
n/a
n/a
Jul
45.6 C (114.1 F)
2.2 C (36.0 F)
n/a
n/a
Aug
42.2 C (108.0 F)
0.0 C (32.0 F)
n/a
n/a
Sep
40.6 C (105.1 F)
-12.2 C (10.0 F)
n/a
n/a
Oct
35.0 C (95.0 F)
-25.6 C (-14.1 F)
n/a
n/a
Nov
28.3 C (82.9 F)
-36.1 C (-33.0 F)
n/a
n/a
Dec
25.0 C (77.0 F)
-41.7 C (-43.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Ardmore 1 NW still stand. 1936 holds the most, with 49.
Standing records at Ardmore 1 NW by the year they were set
Year set
Standing records
1912
1
1913
3
1914
13
1915
15
1916
25
1917
11
1918
17
1919
15
1920
9
1921
13
1922
14
1923
6
1924
11
1925
12
1926
8
1927
13
1928
9
1929
17
1930
18
1931
30
1932
17
1933
12
1934
24
1935
16
1936
49
1937
18
1938
10
1939
25
1940
15
1941
16
1942
15
1943
18
1944
9
1945
11
1946
20
1947
13
1948
7
1949
9
1950
23
1951
11
1952
12
1953
24
1954
33
1955
9
1956
17
1957
7
1958
16
1959
25
1960
24
1961
11
1962
21
1963
12
1964
16
1965
16
1966
16
1967
12
1968
17
1969
19
1970
7
1971
7
1972
20
1973
10
1974
17
1975
9
1976
6
1977
8
1978
9
1979
11
1980
8
1981
12
1982
3
1983
14
1984
6
1985
25
1986
15
1987
10
1988
17
1989
23
1990
18
1991
9
1992
20
1993
11
1994
7
1995
24
1996
15
1997
11
1998
19
1999
11
2000
13
2001
6
2002
14
2003
17
2004
14
2005
15
2006
18
2007
17
2008
3
2009
18
2010
11
2011
3
2012
22
2013
6
All-Time Record Progression
4 new records
4 all-time records were set at Ardmore 1 NW between 30 May 1943 and 22 December 1989. Each dot is a new record.
When Ardmore 1 NW set new all-time records
Date
Kind
Detail
1943-05-30
Record daily precipitation
Record daily precipitation 147.6 mm (5.8 in)
1954-07-12
Record high maximum temperature
Record high maximum temperature 45.6 C (114.1 F)
1963-01-19
Record low minimum temperature
Record low minimum temperature -38.3 C (-36.9 F)
1989-12-22
Record low minimum temperature
Record low minimum temperature -41.7 C (-43.1 F)
Wettest Day of Each Month
May: 147.6 mm (5.8 in)
The wettest day on record for each calendar month at Ardmore 1 NW. The most was 147.6 mm (5.8 in) on 30 May 1943.
Record daily precipitation for each month at Ardmore 1 NW
Month
Record daily precipitation (mm)
Date
Jan
27.9 mm (1.1 in)
4 January 1949
Feb
22.4 mm (0.9 in)
25 February 1964
Mar
71.1 mm (2.8 in)
23 March 2009
Apr
128.5 mm (5.1 in)
19 April 2000
May
147.6 mm (5.8 in)
30 May 1943
Jun
68.6 mm (2.7 in)
13 June 2005
Jul
66.3 mm (2.6 in)
24 July 1934
Aug
77.2 mm (3.0 in)
27 August 1933
Sep
50.8 mm (2.0 in)
25 September 1915
Oct
48.3 mm (1.9 in)
6 October 1994
Nov
35.6 mm (1.4 in)
4 November 1922
Dec
50.8 mm (2.0 in)
15 December 1910
Period of Record Coverage
1912 to 2013
Complete yearUnder 90 percent of days
102 years of record at Ardmore 1 NW, 1912 to 2013. 17 years have data for under 90 percent of days and are left out of rankings: 1912, 1913, 1922, 1927, 1929, 1947, 1948, 1950 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 72 complete years at Ardmore 1 NW, 1914 to 2012. Blue stripes are years cooler than the station's own mean of 8.1 C (46.6 F); red stripes are warmer. The coolest year was 1993, at 5.8 C (42.5 F), and the warmest was 2012, at 10.6 C (51.1 F). The strongest colour marks a difference of 2.5 C (4.5 F).
Annual mean temperature at Ardmore 1 NW as warming stripes, 1914 to 2012
Year
Annual mean temperature
Difference from the station mean
1914
8.2 C
+0.07 C
1916
6.5 C
-1.59 C
1917
6.5 C
-1.61 C
1918
7.4 C
-0.72 C
1920
7.1 C
-1.05 C
1921
8.8 C
+0.62 C
1923
7.6 C
-0.57 C
1925
8.4 C
+0.29 C
1926
8.7 C
+0.52 C
1927
7.2 C
-0.94 C
1928
8.4 C
+0.24 C
1930
8.6 C
+0.43 C
1931
9.6 C
+1.49 C
1932
8.1 C
-0.03 C
1933
9.4 C
+1.25 C
1934
10.1 C
+1.96 C
1935
8.4 C
+0.24 C
1936
8.1 C
-0.03 C
1937
7.6 C
-0.53 C
1938
9.2 C
+1.05 C
1939
9.4 C
+1.29 C
1941
8.6 C
+0.43 C
1942
7.8 C
-0.38 C
1943
9.0 C
+0.84 C
1944
7.2 C
-0.92 C
1945
7.2 C
-0.96 C
1946
8.9 C
+0.78 C
1953
9.7 C
+1.52 C
1955
8.0 C
-0.14 C
1956
8.7 C
+0.54 C
1957
7.8 C
-0.34 C
1962
8.0 C
-0.11 C
1963
8.9 C
+0.75 C
1964
7.8 C
-0.30 C
1966
7.2 C
-0.97 C
1967
7.7 C
-0.45 C
1968
7.2 C
-0.90 C
1969
8.0 C
-0.11 C
1970
7.5 C
-0.66 C
1971
7.5 C
-0.59 C
1972
7.2 C
-0.95 C
1973
7.9 C
-0.26 C
1974
8.4 C
+0.30 C
1975
7.3 C
-0.84 C
1978
6.1 C
-2.08 C
1981
9.4 C
+1.26 C
1982
6.8 C
-1.29 C
1983
7.7 C
-0.44 C
1984
7.7 C
-0.48 C
1985
6.9 C
-1.27 C
1986
8.1 C
-0.06 C
1987
8.7 C
+0.59 C
1988
8.6 C
+0.49 C
1989
7.9 C
-0.24 C
1990
8.5 C
+0.36 C
1991
8.5 C
+0.33 C
1992
7.9 C
-0.19 C
1993
5.8 C
-2.32 C
1994
8.3 C
+0.13 C
1995
7.8 C
-0.30 C
1996
6.7 C
-1.42 C
1997
8.0 C
-0.14 C
1998
8.6 C
+0.42 C
1999
9.4 C
+1.26 C
2000
8.2 C
+0.09 C
2002
8.0 C
-0.18 C
2003
8.7 C
+0.52 C
2004
9.0 C
+0.90 C
2005
8.8 C
+0.70 C
2006
9.5 C
+1.34 C
2007
9.3 C
+1.19 C
2012
10.6 C
+2.50 C
The fitted trend in annual mean temperature here over 1914 to 2012 is 0.03 C (-0.05 to 0.10) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.05 F (-0.09 to 0.19) per decade. The slope is a straight line fitted to 72 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Ardmore 1 NW
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.03 C (-0.05 to 0.10) per decade
0.05 F (-0.09 to 0.19) per decade
1914 to 2012
72
Not clearly different from zero
Mean daily maximum
0.12 C (0.02 to 0.22) per decade
0.22 F (0.04 to 0.40) per decade
1914 to 2012
72
Rise
Mean daily minimum
-0.1 C (-0.1 to 0.0) per decade
-0.1 F (-0.2 to 0.0) per decade
1914 to 2012
72
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
1908 to 2013
Yearly extremes at Ardmore 1 NW: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
45.6 C (114.1 F)
1954
40.0 C (104.0 F)
102
Coldest night (TNn)
-41.7 C (-43.1 F)
1989
-31.7 C (-25.1 F)
102
Wettest day (Rx1day)
147.6 mm (5.8 in)
1943
39.7 mm (1.6 in)
106
Wettest five days (Rx5day)
151.7 mm (6.0 in)
1943
57.4 mm (2.3 in)
106
Longest dry spell (CDD)
92 days
1958
34 days
106
Hottest day (TXx)
The hottest day of the year at Ardmore 1 NW, 1908 to 2013. The record is 45.6 C (114.1 F) in 1954, marked on the chart; the median year is 40.0 C (104.0 F).
Hottest day (TXx) at Ardmore 1 NW by year
Year
Hottest day (TXx)
1908
n/a
1909
n/a
1910
n/a
1911
n/a
1912
37.2 C (99.0 F)
1913
38.9 C (102.0 F)
1914
38.9 C (102.0 F)
1915
33.3 C (91.9 F)
1916
37.8 C (100.0 F)
1917
39.4 C (102.9 F)
1918
37.2 C (99.0 F)
1919
39.4 C (102.9 F)
1920
40.6 C (105.1 F)
1921
38.9 C (102.0 F)
1922
39.4 C (102.9 F)
1923
36.1 C (97.0 F)
1924
39.4 C (102.9 F)
1925
39.4 C (102.9 F)
1926
41.1 C (106.0 F)
1927
34.4 C (93.9 F)
1928
38.9 C (102.0 F)
1929
40.6 C (105.1 F)
1930
41.7 C (107.1 F)
1931
42.8 C (109.0 F)
1932
38.9 C (102.0 F)
1933
42.2 C (108.0 F)
1934
43.3 C (109.9 F)
1935
41.7 C (107.1 F)
1936
43.3 C (109.9 F)
1937
42.2 C (108.0 F)
1938
41.1 C (106.0 F)
1939
43.9 C (111.0 F)
1940
42.8 C (109.0 F)
1941
40.0 C (104.0 F)
1942
37.2 C (99.0 F)
1943
38.9 C (102.0 F)
1944
41.7 C (107.1 F)
1945
38.9 C (102.0 F)
1946
41.1 C (106.0 F)
1947
40.0 C (104.0 F)
1948
38.3 C (100.9 F)
1949
40.0 C (104.0 F)
1950
36.7 C (98.1 F)
1951
36.1 C (97.0 F)
1952
40.0 C (104.0 F)
1953
41.1 C (106.0 F)
1954
45.6 C (114.1 F)
1955
39.4 C (102.9 F)
1956
40.6 C (105.1 F)
1957
40.0 C (104.0 F)
1958
38.9 C (102.0 F)
1959
40.6 C (105.1 F)
1960
42.2 C (108.0 F)
1961
40.6 C (105.1 F)
1962
38.3 C (100.9 F)
1963
39.4 C (102.9 F)
1964
40.6 C (105.1 F)
1965
38.3 C (100.9 F)
1966
40.6 C (105.1 F)
1967
37.8 C (100.0 F)
1968
39.4 C (102.9 F)
1969
40.6 C (105.1 F)
1970
38.9 C (102.0 F)
1971
38.9 C (102.0 F)
1972
38.9 C (102.0 F)
1973
42.8 C (109.0 F)
1974
41.1 C (106.0 F)
1975
41.7 C (107.1 F)
1976
40.0 C (104.0 F)
1977
40.6 C (105.1 F)
1978
40.0 C (104.0 F)
1979
39.4 C (102.9 F)
1980
42.2 C (108.0 F)
1981
42.2 C (108.0 F)
1982
40.6 C (105.1 F)
1983
40.6 C (105.1 F)
1984
38.3 C (100.9 F)
1985
41.7 C (107.1 F)
1986
39.4 C (102.9 F)
1987
40.0 C (104.0 F)
1988
42.8 C (109.0 F)
1989
42.2 C (108.0 F)
1990
41.1 C (106.0 F)
1991
38.3 C (100.9 F)
1992
37.2 C (99.0 F)
1993
36.1 C (97.0 F)
1994
38.3 C (100.9 F)
1995
40.6 C (105.1 F)
1996
38.3 C (100.9 F)
1997
37.8 C (100.0 F)
1998
40.0 C (104.0 F)
1999
38.3 C (100.9 F)
2000
38.9 C (102.0 F)
2001
38.9 C (102.0 F)
2002
41.7 C (107.1 F)
2003
41.1 C (106.0 F)
2004
39.4 C (102.9 F)
2005
40.0 C (104.0 F)
2006
42.8 C (109.0 F)
2007
42.8 C (109.0 F)
2008
38.9 C (102.0 F)
2009
36.7 C (98.1 F)
2010
40.0 C (104.0 F)
2011
40.0 C (104.0 F)
2012
41.1 C (106.0 F)
2013
38.9 C (102.0 F)
Coldest night (TNn)
The coldest night of the year at Ardmore 1 NW, 1908 to 2013. The record is -41.7 C (-43.1 F) in 1989, marked on the chart; the median year is -31.7 C (-25.1 F).
Coldest night (TNn) at Ardmore 1 NW by year
Year
Coldest night (TNn)
1908
n/a
1909
n/a
1910
n/a
1911
n/a
1912
5.0 C (41.0 F)
1913
-21.7 C (-7.1 F)
1914
-30.0 C (-22.0 F)
1915
-32.8 C (-27.0 F)
1916
-36.7 C (-34.1 F)
1917
-32.8 C (-27.0 F)
1918
-35.6 C (-32.1 F)
1919
-36.1 C (-33.0 F)
1920
-31.7 C (-25.1 F)
1921
-27.2 C (-17.0 F)
1922
-33.9 C (-29.0 F)
1923
-35.6 C (-32.1 F)
1924
-33.3 C (-27.9 F)
1925
-28.9 C (-20.0 F)
1926
-28.3 C (-18.9 F)
1927
-33.3 C (-27.9 F)
1928
-28.3 C (-18.9 F)
1929
-30.6 C (-23.1 F)
1930
-33.9 C (-29.0 F)
1931
-25.6 C (-14.1 F)
1932
-33.9 C (-29.0 F)
1933
-35.6 C (-32.1 F)
1934
-29.4 C (-20.9 F)
1935
-30.6 C (-23.1 F)
1936
-36.1 C (-33.0 F)
1937
-29.4 C (-20.9 F)
1938
-26.1 C (-15.0 F)
1939
-27.8 C (-18.0 F)
1940
-30.6 C (-23.1 F)
1941
-29.4 C (-20.9 F)
1942
-33.3 C (-27.9 F)
1943
-34.4 C (-29.9 F)
1944
-31.7 C (-25.1 F)
1945
-30.0 C (-22.0 F)
1946
-31.1 C (-24.0 F)
1947
-28.9 C (-20.0 F)
1948
-25.6 C (-14.1 F)
1949
-32.8 C (-27.0 F)
1950
-30.0 C (-22.0 F)
1951
-28.9 C (-20.0 F)
1952
-30.0 C (-22.0 F)
1953
-26.7 C (-16.1 F)
1954
-29.4 C (-20.9 F)
1955
-26.7 C (-16.1 F)
1956
-31.1 C (-24.0 F)
1957
-36.1 C (-33.0 F)
1958
-25.6 C (-14.1 F)
1959
-36.1 C (-33.0 F)
1960
-32.2 C (-26.0 F)
1961
-28.3 C (-18.9 F)
1962
-35.0 C (-31.0 F)
1963
-38.3 C (-36.9 F)
1964
-30.6 C (-23.1 F)
1965
-26.1 C (-15.0 F)
1966
-35.6 C (-32.1 F)
1967
-33.3 C (-27.9 F)
1968
-35.6 C (-32.1 F)
1969
-27.8 C (-18.0 F)
1970
-29.4 C (-20.9 F)
1971
-30.0 C (-22.0 F)
1972
-35.0 C (-31.0 F)
1973
-35.6 C (-32.1 F)
1974
-34.4 C (-29.9 F)
1975
-26.7 C (-16.1 F)
1976
-33.3 C (-27.9 F)
1977
-32.2 C (-26.0 F)
1978
-37.2 C (-35.0 F)
1979
-33.9 C (-29.0 F)
1980
-21.7 C (-7.1 F)
1981
-34.4 C (-29.9 F)
1982
-36.1 C (-33.0 F)
1983
-35.0 C (-31.0 F)
1984
-33.9 C (-29.0 F)
1985
-34.4 C (-29.9 F)
1986
-31.1 C (-24.0 F)
1987
-30.0 C (-22.0 F)
1988
-32.2 C (-26.0 F)
1989
-41.7 C (-43.1 F)
1990
-39.4 C (-38.9 F)
1991
-28.3 C (-18.9 F)
1992
-30.0 C (-22.0 F)
1993
-33.3 C (-27.9 F)
1994
-31.7 C (-25.1 F)
1995
-27.8 C (-18.0 F)
1996
-37.8 C (-36.0 F)
1997
-26.1 C (-15.0 F)
1998
-32.8 C (-27.0 F)
1999
-19.4 C (-2.9 F)
2000
-33.9 C (-29.0 F)
2001
-33.3 C (-27.9 F)
2002
-26.7 C (-16.1 F)
2003
-32.2 C (-26.0 F)
2004
-25.6 C (-14.1 F)
2005
-31.7 C (-25.1 F)
2006
-37.8 C (-36.0 F)
2007
-32.8 C (-27.0 F)
2008
-32.2 C (-26.0 F)
2009
-35.6 C (-32.1 F)
2010
-28.9 C (-20.0 F)
2011
-26.1 C (-15.0 F)
2012
-27.8 C (-18.0 F)
2013
-27.8 C (-18.0 F)
Wettest day (Rx1day)
The wettest day of the year at Ardmore 1 NW, 1908 to 2013. The record is 147.6 mm (5.8 in) in 1943, marked on the chart; the median year is 39.7 mm (1.6 in).
Wettest day (Rx1day) at Ardmore 1 NW by year
Year
Wettest day (Rx1day)
1908
0.0 mm (0.00 in)
1909
50.8 mm (2.0 in)
1910
50.8 mm (2.0 in)
1911
40.6 mm (1.6 in)
1912
25.4 mm (1.0 in)
1913
21.6 mm (0.9 in)
1914
52.8 mm (2.1 in)
1915
54.9 mm (2.2 in)
1916
29.2 mm (1.1 in)
1917
45.5 mm (1.8 in)
1918
33.5 mm (1.3 in)
1919
32.0 mm (1.3 in)
1920
40.9 mm (1.6 in)
1921
62.2 mm (2.4 in)
1922
35.6 mm (1.4 in)
1923
65.5 mm (2.6 in)
1924
18.3 mm (0.7 in)
1925
49.0 mm (1.9 in)
1926
47.8 mm (1.9 in)
1927
31.8 mm (1.3 in)
1928
28.2 mm (1.1 in)
1929
24.6 mm (1.0 in)
1930
40.6 mm (1.6 in)
1931
18.8 mm (0.7 in)
1932
51.6 mm (2.0 in)
1933
77.2 mm (3.0 in)
1934
66.3 mm (2.6 in)
1935
37.1 mm (1.5 in)
1936
22.4 mm (0.9 in)
1937
40.1 mm (1.6 in)
1938
25.9 mm (1.0 in)
1939
40.1 mm (1.6 in)
1940
31.2 mm (1.2 in)
1941
48.0 mm (1.9 in)
1942
57.4 mm (2.3 in)
1943
147.6 mm (5.8 in)
1944
37.1 mm (1.5 in)
1945
24.9 mm (1.0 in)
1946
44.2 mm (1.7 in)
1947
58.9 mm (2.3 in)
1948
38.1 mm (1.5 in)
1949
27.9 mm (1.1 in)
1950
17.8 mm (0.7 in)
1951
29.5 mm (1.2 in)
1952
27.4 mm (1.1 in)
1953
35.6 mm (1.4 in)
1954
39.4 mm (1.6 in)
1955
35.6 mm (1.4 in)
1956
48.3 mm (1.9 in)
1957
53.3 mm (2.1 in)
1958
39.1 mm (1.5 in)
1959
25.7 mm (1.0 in)
1960
23.9 mm (0.9 in)
1961
42.7 mm (1.7 in)
1962
43.2 mm (1.7 in)
1963
35.6 mm (1.4 in)
1964
26.4 mm (1.0 in)
1965
54.9 mm (2.2 in)
1966
35.1 mm (1.4 in)
1967
63.2 mm (2.5 in)
1968
57.7 mm (2.3 in)
1969
29.5 mm (1.2 in)
1970
43.4 mm (1.7 in)
1971
89.9 mm (3.5 in)
1972
46.0 mm (1.8 in)
1973
60.5 mm (2.4 in)
1974
56.9 mm (2.2 in)
1975
29.2 mm (1.1 in)
1976
45.2 mm (1.8 in)
1977
35.6 mm (1.4 in)
1978
20.3 mm (0.8 in)
1979
27.9 mm (1.1 in)
1980
26.7 mm (1.1 in)
1981
23.4 mm (0.9 in)
1982
45.7 mm (1.8 in)
1983
34.8 mm (1.4 in)
1984
35.6 mm (1.4 in)
1985
27.9 mm (1.1 in)
1986
54.1 mm (2.1 in)
1987
45.0 mm (1.8 in)
1988
31.0 mm (1.2 in)
1989
39.1 mm (1.5 in)
1990
28.2 mm (1.1 in)
1991
49.8 mm (2.0 in)
1992
30.0 mm (1.2 in)
1993
45.7 mm (1.8 in)
1994
50.5 mm (2.0 in)
1995
27.9 mm (1.1 in)
1996
26.2 mm (1.0 in)
1997
56.4 mm (2.2 in)
1998
39.9 mm (1.6 in)
1999
47.8 mm (1.9 in)
2000
128.5 mm (5.1 in)
2001
45.0 mm (1.8 in)
2002
64.5 mm (2.5 in)
2003
54.6 mm (2.1 in)
2004
42.9 mm (1.7 in)
2005
68.6 mm (2.7 in)
2006
33.5 mm (1.3 in)
2007
41.7 mm (1.6 in)
2008
33.8 mm (1.3 in)
2009
71.1 mm (2.8 in)
2010
35.1 mm (1.4 in)
2011
28.4 mm (1.1 in)
2012
44.2 mm (1.7 in)
2013
19.8 mm (0.8 in)
Wettest five days (Rx5day)
The wettest five days of the year at Ardmore 1 NW, 1908 to 2013. The record is 151.7 mm (6.0 in) in 1943, marked on the chart; the median year is 57.4 mm (2.3 in).
Wettest five days (Rx5day) at Ardmore 1 NW by year
Year
Wettest five days (Rx5day)
1908
0.0 mm (0.00 in)
1909
83.8 mm (3.3 in)
1910
25.4 mm (1.0 in)
1911
66.5 mm (2.6 in)
1912
52.1 mm (2.1 in)
1913
34.6 mm (1.4 in)
1914
55.1 mm (2.2 in)
1915
78.3 mm (3.1 in)
1916
49.8 mm (2.0 in)
1917
89.5 mm (3.5 in)
1918
91.2 mm (3.6 in)
1919
51.3 mm (2.0 in)
1920
85.4 mm (3.4 in)
1921
88.1 mm (3.5 in)
1922
35.6 mm (1.4 in)
1923
61.7 mm (2.4 in)
1924
25.4 mm (1.0 in)
1925
73.3 mm (2.9 in)
1926
65.8 mm (2.6 in)
1927
79.5 mm (3.1 in)
1928
49.8 mm (2.0 in)
1929
47.2 mm (1.9 in)
1930
72.2 mm (2.8 in)
1931
24.7 mm (1.0 in)
1932
89.5 mm (3.5 in)
1933
85.8 mm (3.4 in)
1934
74.6 mm (2.9 in)
1935
81.6 mm (3.2 in)
1936
46.2 mm (1.8 in)
1937
63.0 mm (2.5 in)
1938
43.4 mm (1.7 in)
1939
54.1 mm (2.1 in)
1940
47.8 mm (1.9 in)
1941
81.5 mm (3.2 in)
1942
85.1 mm (3.4 in)
1943
151.7 mm (6.0 in)
1944
60.0 mm (2.4 in)
1945
33.7 mm (1.3 in)
1946
59.1 mm (2.3 in)
1947
100.3 mm (3.9 in)
1948
38.6 mm (1.5 in)
1949
43.1 mm (1.7 in)
1950
25.4 mm (1.0 in)
1951
39.4 mm (1.6 in)
1952
55.6 mm (2.2 in)
1953
39.2 mm (1.5 in)
1954
55.4 mm (2.2 in)
1955
55.9 mm (2.2 in)
1956
85.2 mm (3.4 in)
1957
57.7 mm (2.3 in)
1958
64.2 mm (2.5 in)
1959
56.4 mm (2.2 in)
1960
25.7 mm (1.0 in)
1961
75.4 mm (3.0 in)
1962
91.5 mm (3.6 in)
1963
52.1 mm (2.1 in)
1964
49.2 mm (1.9 in)
1965
59.2 mm (2.3 in)
1966
42.1 mm (1.7 in)
1967
78.2 mm (3.1 in)
1968
77.2 mm (3.0 in)
1969
53.6 mm (2.1 in)
1970
43.4 mm (1.7 in)
1971
93.5 mm (3.7 in)
1972
63.0 mm (2.5 in)
1973
78.7 mm (3.1 in)
1974
61.5 mm (2.4 in)
1975
36.6 mm (1.4 in)
1976
57.8 mm (2.3 in)
1977
52.6 mm (2.1 in)
1978
61.0 mm (2.4 in)
1979
52.8 mm (2.1 in)
1980
36.8 mm (1.4 in)
1981
46.5 mm (1.8 in)
1982
84.5 mm (3.3 in)
1983
39.7 mm (1.6 in)
1984
56.9 mm (2.2 in)
1985
38.6 mm (1.5 in)
1986
93.8 mm (3.7 in)
1987
57.1 mm (2.2 in)
1988
52.5 mm (2.1 in)
1989
55.6 mm (2.2 in)
1990
53.4 mm (2.1 in)
1991
60.2 mm (2.4 in)
1992
39.6 mm (1.6 in)
1993
65.1 mm (2.6 in)
1994
74.6 mm (2.9 in)
1995
54.9 mm (2.2 in)
1996
75.5 mm (3.0 in)
1997
75.9 mm (3.0 in)
1998
59.7 mm (2.4 in)
1999
69.9 mm (2.8 in)
2000
133.3 mm (5.2 in)
2001
117.1 mm (4.6 in)
2002
65.5 mm (2.6 in)
2003
74.5 mm (2.9 in)
2004
48.5 mm (1.9 in)
2005
123.0 mm (4.8 in)
2006
50.3 mm (2.0 in)
2007
54.4 mm (2.1 in)
2008
52.5 mm (2.1 in)
2009
73.6 mm (2.9 in)
2010
69.4 mm (2.7 in)
2011
44.5 mm (1.8 in)
2012
45.5 mm (1.8 in)
2013
35.1 mm (1.4 in)
Longest dry spell (CDD)
The longest dry spell of the year at Ardmore 1 NW, 1908 to 2013. The record is 92 days in 1958, marked on the chart; the median year is 34 days.
Longest dry spell (CDD) at Ardmore 1 NW by year
Year
Longest dry spell (CDD)
1908
30 days
1909
37 days
1910
26 days
1911
26 days
1912
20 days
1913
20 days
1914
44 days
1915
28 days
1916
38 days
1917
18 days
1918
19 days
1919
31 days
1920
34 days
1921
46 days
1922
42 days
1923
49 days
1924
33 days
1925
26 days
1926
23 days
1927
25 days
1928
38 days
1929
50 days
1930
43 days
1931
50 days
1932
50 days
1933
50 days
1934
35 days
1935
51 days
1936
33 days
1937
35 days
1938
28 days
1939
59 days
1940
30 days
1941
29 days
1942
36 days
1943
56 days
1944
30 days
1945
29 days
1946
29 days
1947
30 days
1948
38 days
1949
53 days
1950
60 days
1951
40 days
1952
50 days
1953
31 days
1954
34 days
1955
34 days
1956
41 days
1957
29 days
1958
92 days
1959
27 days
1960
42 days
1961
46 days
1962
39 days
1963
46 days
1964
41 days
1965
28 days
1966
24 days
1967
30 days
1968
44 days
1969
39 days
1970
23 days
1971
32 days
1972
27 days
1973
43 days
1974
24 days
1975
34 days
1976
32 days
1977
34 days
1978
22 days
1979
26 days
1980
28 days
1981
37 days
1982
22 days
1983
23 days
1984
34 days
1985
30 days
1986
23 days
1987
33 days
1988
41 days
1989
33 days
1990
37 days
1991
43 days
1992
45 days
1993
22 days
1994
24 days
1995
37 days
1996
39 days
1997
31 days
1998
38 days
1999
47 days
2000
27 days
2001
33 days
2002
55 days
2003
29 days
2004
34 days
2005
55 days
2006
35 days
2007
33 days
2008
34 days
2009
23 days
2010
31 days
2011
48 days
2012
28 days
2013
40 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
72 years with a frost
Across 72 years with a frost, the median last spring frost at Ardmore 1 NW falls on 15 May and the median first autumn frost on 19 September, which leaves a median of 126 days between them.
In 1974 to 2012 the median growing season was 124 days. That is 8 days fewer than in 1914 to 1956.
Fitted over all years, the growing season changes by -1.7 days per decade at this station.
Frost dates and growing season at Ardmore 1 NW
Measure
Median, all years
Earliest period (1914 to 1956)
Recent period (1974 to 2012)
Recent against earliest
Fitted trend
Last spring frost
15 May
14 May
18 May
4 days later
+0.9 days per decade
First autumn frost
19 September
22 September
17 September
5 days earlier
-0.8 days per decade
Growing days
126 days
132 days
124 days
8 days fewer
-1.7 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
89 years, 1909 to 2012
A day with at least 39.8 mm (1.6 in) of rain is expected about once in 2 years. A day with at least 113.2 mm (4.5 in) of rain is expected about once in 100 years.
Rainfall return levels at Ardmore 1 NW: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
39.8 mm (1.6 in)
5 years
55.5 mm (2.2 in)
10 years
67.3 mm (2.6 in)
25 years
84.0 mm (3.3 in)
50 years
98.0 mm (3.9 in)
100 years
113.2 mm (4.5 in)
Longer than the 89 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, 89 years of values from 1909 to 2012.
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: 147.6 mm (5.8 in) in 1943; 128.5 mm (5.1 in) in 2000; 89.9 mm (3.5 in) in 1971.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Ardmore 1 NW standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Ardmore 1 NW 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.