Record envelope, standing records and threshold days for Maddock (USC00325434), North Dakota, United States, with 90 years of record.
Key Facts for Maddock
Maddock (USC00325434) is a weather station in North Dakota, United States at 47.96 latitude and -99.53 longitude, 492 m (1,615 ft) above sea level.
The station reports from 1915 to 2004, 90 years of record.
1,464 records set at Maddock still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Maddock set a daily record high maximum temperature of 15.0 C (59.0 F) on 17 November 2004.
About the Station
Location: North Dakota, United States, 47.96 latitude, -99.53 longitude.
Elevation: 492 m (1,615 ft).
Period of record: 1915 to 2004, 90 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 Maddock. 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 Maddock, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
10.6 C (51.1 F)
-44.4 C (-47.9 F)
n/a
n/a
Feb
17.2 C (63.0 F)
-45.6 C (-50.1 F)
n/a
n/a
Mar
25.0 C (77.0 F)
-38.9 C (-38.0 F)
n/a
n/a
Apr
34.4 C (93.9 F)
-22.2 C (-8.0 F)
n/a
n/a
May
41.7 C (107.1 F)
-13.3 C (8.1 F)
n/a
n/a
Jun
41.1 C (106.0 F)
-4.4 C (24.1 F)
n/a
n/a
Jul
43.3 C (109.9 F)
-1.1 C (30.0 F)
n/a
n/a
Aug
41.1 C (106.0 F)
-2.8 C (27.0 F)
n/a
n/a
Sep
40.6 C (105.1 F)
-11.7 C (10.9 F)
n/a
n/a
Oct
34.4 C (93.9 F)
-20.6 C (-5.1 F)
n/a
n/a
Nov
22.2 C (72.0 F)
-34.4 C (-29.9 F)
n/a
n/a
Dec
16.7 C (62.1 F)
-42.2 C (-44.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Maddock still stand. 1936 holds the most, with 62.
Standing records at Maddock by the year they were set
Year set
Standing records
1915
35
1916
27
1917
51
1918
44
1919
49
1920
18
1921
29
1922
21
1923
29
1924
25
1925
37
1926
27
1927
28
1928
28
1929
20
1930
29
1931
43
1932
20
1933
16
1934
35
1935
23
1936
62
1937
38
1938
23
1939
43
1940
21
1941
25
1942
27
1943
13
1944
17
1945
26
1946
16
1947
29
1948
26
1949
14
1950
34
1951
18
1952
21
1953
15
1954
17
1955
17
1956
19
1957
9
1958
25
1959
22
1960
12
1961
17
1962
16
1963
30
1964
31
1965
23
1966
24
1967
14
1968
25
1969
23
1970
11
1971
7
1972
19
2004
1
All-Time Record Progression
1 new records
1 all-time records were set at Maddock between 16 July 1946 and 16 July 1946. Each dot is a new record.
When Maddock set new all-time records
Date
Kind
Detail
1946-07-16
Record daily precipitation
Record daily precipitation 94.0 mm (3.7 in)
Wettest Day of Each Month
Jul: 94.0 mm (3.7 in)
The wettest day on record for each calendar month at Maddock. The most was 94.0 mm (3.7 in) on 16 July 1946.
Record daily precipitation for each month at Maddock
Month
Record daily precipitation (mm)
Date
Jan
20.3 mm (0.8 in)
10 January 1929
Feb
21.6 mm (0.9 in)
22 February 1922
Mar
24.4 mm (1.0 in)
5 March 1983
Apr
39.9 mm (1.6 in)
26 April 1924
May
52.1 mm (2.1 in)
8 May 1927
Jun
81.5 mm (3.2 in)
6 June 1956
Jul
94.0 mm (3.7 in)
16 July 1946
Aug
73.2 mm (2.9 in)
21 August 1980
Sep
69.3 mm (2.7 in)
5 September 1992
Oct
52.6 mm (2.1 in)
7 October 1994
Nov
33.5 mm (1.3 in)
9 November 1918
Dec
17.8 mm (0.7 in)
5 December 1960
Period of Record Coverage
1915 to 2004
Complete yearUnder 90 percent of days
59 years of record at Maddock, 1915 to 2004. 3 years have data for under 90 percent of days and are left out of rankings: 1922, 1965, 2004.
Cooler than the station meanWarmer than the station mean
One stripe for each of 54 complete years at Maddock, 1915 to 1971. Blue stripes are years cooler than the station's own mean of 3.9 C (39.1 F); red stripes are warmer. The coolest year was 1950, at 1.2 C (34.1 F), and the warmest was 1931, at 6.6 C (43.8 F). The strongest colour marks a difference of 2.8 C (5.0 F).
Annual mean temperature at Maddock as warming stripes, 1915 to 1971
Year
Annual mean temperature
Difference from the station mean
1915
4.3 C
+0.35 C
1916
2.0 C
-1.98 C
1917
1.9 C
-2.03 C
1918
3.9 C
-0.01 C
1919
2.9 C
-1.08 C
1920
3.6 C
-0.32 C
1921
5.0 C
+1.11 C
1923
4.5 C
+0.55 C
1924
3.3 C
-0.63 C
1925
4.7 C
+0.74 C
1926
4.3 C
+0.32 C
1927
3.0 C
-0.96 C
1928
4.7 C
+0.79 C
1929
2.8 C
-1.09 C
1930
4.3 C
+0.41 C
1931
6.6 C
+2.62 C
1932
3.9 C
-0.02 C
1933
4.2 C
+0.27 C
1934
5.6 C
+1.66 C
1935
3.4 C
-0.51 C
1936
3.1 C
-0.88 C
1937
3.3 C
-0.63 C
1938
4.7 C
+0.79 C
1939
4.4 C
+0.44 C
1940
4.3 C
+0.40 C
1941
5.0 C
+1.03 C
1942
4.7 C
+0.80 C
1943
4.2 C
+0.26 C
1944
4.5 C
+0.60 C
1945
3.2 C
-0.69 C
1946
4.3 C
+0.33 C
1947
4.4 C
+0.42 C
1948
3.7 C
-0.27 C
1950
1.2 C
-2.77 C
1951
1.8 C
-2.14 C
1952
4.7 C
+0.79 C
1953
5.7 C
+1.80 C
1954
4.7 C
+0.79 C
1955
3.6 C
-0.37 C
1956
3.5 C
-0.39 C
1957
4.7 C
+0.72 C
1958
4.9 C
+0.96 C
1959
4.4 C
+0.50 C
1960
4.4 C
+0.45 C
1961
4.8 C
+0.82 C
1962
4.0 C
+0.05 C
1963
5.1 C
+1.21 C
1964
3.5 C
-0.48 C
1966
3.0 C
-0.93 C
1967
3.5 C
-0.40 C
1968
2.9 C
-1.00 C
1969
2.3 C
-1.61 C
1970
3.3 C
-0.68 C
1971
3.8 C
-0.14 C
The fitted trend in annual mean temperature here over 1915 to 1971 is 0.00 C (-0.18 to 0.17) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.01 F (-0.32 to 0.31) per decade. The slope is a straight line fitted to 54 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Maddock
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.00 C (-0.18 to 0.17) per decade
-0.01 F (-0.32 to 0.31) per decade
1915 to 1971
54
Not clearly different from zero
Mean daily maximum
-0.1 C (-0.3 to 0.1) per decade
-0.1 F (-0.5 to 0.2) per decade
1915 to 1971
54
Not clearly different from zero
Mean daily minimum
0.1 C (-0.1 to 0.2) per decade
0.1 F (-0.2 to 0.4) per decade
1915 to 1971
54
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
1915 to 2004
Yearly extremes at Maddock: 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)
1936
37.2 C (99.0 F)
59
Coldest night (TNn)
-45.6 C (-50.1 F)
1936
-36.7 C (-34.1 F)
59
Wettest day (Rx1day)
94.0 mm (3.7 in)
1946
41.1 mm (1.6 in)
79
Wettest five days (Rx5day)
164.7 mm (6.5 in)
1993
62.2 mm (2.4 in)
79
Longest dry spell (CDD)
64 days
1918
32 days
79
Hottest day (TXx)
The hottest day of the year at Maddock, 1915 to 2004. The record is 43.3 C (109.9 F) in 1936, marked on the chart; the median year is 37.2 C (99.0 F).
Hottest day (TXx) at Maddock by year
Year
Hottest day (TXx)
1915
35.0 C (95.0 F)
1916
35.0 C (95.0 F)
1917
40.0 C (104.0 F)
1918
35.6 C (96.1 F)
1919
37.8 C (100.0 F)
1920
36.7 C (98.1 F)
1921
39.4 C (102.9 F)
1922
37.2 C (99.0 F)
1923
36.1 C (97.0 F)
1924
34.4 C (93.9 F)
1925
40.6 C (105.1 F)
1926
38.3 C (100.9 F)
1927
32.8 C (91.0 F)
1928
35.0 C (95.0 F)
1929
41.1 C (106.0 F)
1930
38.3 C (100.9 F)
1931
41.1 C (106.0 F)
1932
39.4 C (102.9 F)
1933
40.0 C (104.0 F)
1934
41.7 C (107.1 F)
1935
37.8 C (100.0 F)
1936
43.3 C (109.9 F)
1937
38.9 C (102.0 F)
1938
35.6 C (96.1 F)
1939
38.9 C (102.0 F)
1940
37.2 C (99.0 F)
1941
37.8 C (100.0 F)
1942
36.1 C (97.0 F)
1943
35.0 C (95.0 F)
1944
36.1 C (97.0 F)
1945
37.2 C (99.0 F)
1946
37.8 C (100.0 F)
1947
40.0 C (104.0 F)
1948
37.2 C (99.0 F)
1949
35.6 C (96.1 F)
1950
33.3 C (91.9 F)
1951
36.7 C (98.1 F)
1952
36.1 C (97.0 F)
1953
39.4 C (102.9 F)
1954
33.9 C (93.0 F)
1955
37.8 C (100.0 F)
1956
33.3 C (91.9 F)
1957
40.0 C (104.0 F)
1958
39.4 C (102.9 F)
1959
42.2 C (108.0 F)
1960
40.6 C (105.1 F)
1961
41.1 C (106.0 F)
1962
34.4 C (93.9 F)
1963
37.2 C (99.0 F)
1964
38.3 C (100.9 F)
1965
35.6 C (96.1 F)
1966
36.7 C (98.1 F)
1967
36.7 C (98.1 F)
1968
36.7 C (98.1 F)
1969
37.8 C (100.0 F)
1970
36.1 C (97.0 F)
1971
38.3 C (100.9 F)
1972
36.7 C (98.1 F)
1976
n/a
1977
n/a
1978
n/a
1979
n/a
1980
n/a
1981
n/a
1982
n/a
1983
n/a
1984
n/a
1985
n/a
1986
n/a
1987
n/a
1988
n/a
1989
n/a
1990
n/a
1991
n/a
1992
n/a
1993
n/a
1994
n/a
1995
n/a
2004
16.7 C (62.1 F)
Coldest night (TNn)
The coldest night of the year at Maddock, 1915 to 2004. The record is -45.6 C (-50.1 F) in 1936, marked on the chart; the median year is -36.7 C (-34.1 F).
Coldest night (TNn) at Maddock by year
Year
Coldest night (TNn)
1915
-41.1 C (-42.0 F)
1916
-44.4 C (-47.9 F)
1917
-42.2 C (-44.0 F)
1918
-38.3 C (-36.9 F)
1919
-38.9 C (-38.0 F)
1920
-37.8 C (-36.0 F)
1921
-33.9 C (-29.0 F)
1922
-39.4 C (-38.9 F)
1923
-35.6 C (-32.1 F)
1924
-36.1 C (-33.0 F)
1925
-33.9 C (-29.0 F)
1926
-32.2 C (-26.0 F)
1927
-33.9 C (-29.0 F)
1928
-35.0 C (-31.0 F)
1929
-36.7 C (-34.1 F)
1930
-37.8 C (-36.0 F)
1931
-27.8 C (-18.0 F)
1932
-35.0 C (-31.0 F)
1933
-39.4 C (-38.9 F)
1934
-38.3 C (-36.9 F)
1935
-38.3 C (-36.9 F)
1936
-45.6 C (-50.1 F)
1937
-40.0 C (-40.0 F)
1938
-36.7 C (-34.1 F)
1939
-42.2 C (-44.0 F)
1940
-34.4 C (-29.9 F)
1941
-37.2 C (-35.0 F)
1942
-34.4 C (-29.9 F)
1943
-37.8 C (-36.0 F)
1944
-38.3 C (-36.9 F)
1945
-33.9 C (-29.0 F)
1946
-37.8 C (-36.0 F)
1947
-33.9 C (-29.0 F)
1948
-38.9 C (-38.0 F)
1949
-37.2 C (-35.0 F)
1950
-39.4 C (-38.9 F)
1951
-38.3 C (-36.9 F)
1952
-33.9 C (-29.0 F)
1953
-30.6 C (-23.1 F)
1954
-38.9 C (-38.0 F)
1955
-35.6 C (-32.1 F)
1956
-36.1 C (-33.0 F)
1957
-33.9 C (-29.0 F)
1958
-35.6 C (-32.1 F)
1959
-35.6 C (-32.1 F)
1960
-34.4 C (-29.9 F)
1961
-37.8 C (-36.0 F)
1962
-35.6 C (-32.1 F)
1963
-35.0 C (-31.0 F)
1964
-34.4 C (-29.9 F)
1965
-37.8 C (-36.0 F)
1966
-37.8 C (-36.0 F)
1967
-41.7 C (-43.1 F)
1968
-40.6 C (-41.1 F)
1969
-35.6 C (-32.1 F)
1970
-36.7 C (-34.1 F)
1971
-36.7 C (-34.1 F)
1972
-36.1 C (-33.0 F)
1976
n/a
1977
n/a
1978
n/a
1979
n/a
1980
n/a
1981
n/a
1982
n/a
1983
n/a
1984
n/a
1985
n/a
1986
n/a
1987
n/a
1988
n/a
1989
n/a
1990
n/a
1991
n/a
1992
n/a
1993
n/a
1994
n/a
1995
n/a
2004
-13.9 C (7.0 F)
Wettest day (Rx1day)
The wettest day of the year at Maddock, 1915 to 2004. The record is 94.0 mm (3.7 in) in 1946, marked on the chart; the median year is 41.1 mm (1.6 in).
Wettest day (Rx1day) at Maddock by year
Year
Wettest day (Rx1day)
1915
38.9 mm (1.5 in)
1916
53.8 mm (2.1 in)
1917
22.9 mm (0.9 in)
1918
33.5 mm (1.3 in)
1919
41.1 mm (1.6 in)
1920
43.7 mm (1.7 in)
1921
59.7 mm (2.4 in)
1922
52.3 mm (2.1 in)
1923
59.9 mm (2.4 in)
1924
39.9 mm (1.6 in)
1925
44.5 mm (1.8 in)
1926
32.3 mm (1.3 in)
1927
52.1 mm (2.1 in)
1928
48.5 mm (1.9 in)
1929
29.7 mm (1.2 in)
1930
53.1 mm (2.1 in)
1931
67.3 mm (2.6 in)
1932
40.4 mm (1.6 in)
1933
31.2 mm (1.2 in)
1934
40.1 mm (1.6 in)
1935
57.9 mm (2.3 in)
1936
54.6 mm (2.1 in)
1937
45.2 mm (1.8 in)
1938
79.8 mm (3.1 in)
1939
34.5 mm (1.4 in)
1940
26.2 mm (1.0 in)
1941
47.8 mm (1.9 in)
1942
29.2 mm (1.1 in)
1943
19.1 mm (0.8 in)
1944
42.9 mm (1.7 in)
1945
36.3 mm (1.4 in)
1946
94.0 mm (3.7 in)
1947
31.0 mm (1.2 in)
1948
32.8 mm (1.3 in)
1949
35.3 mm (1.4 in)
1950
33.0 mm (1.3 in)
1951
24.6 mm (1.0 in)
1952
58.4 mm (2.3 in)
1953
39.6 mm (1.6 in)
1954
78.7 mm (3.1 in)
1955
24.1 mm (0.9 in)
1956
81.5 mm (3.2 in)
1957
86.9 mm (3.4 in)
1958
54.6 mm (2.1 in)
1959
36.8 mm (1.4 in)
1960
41.9 mm (1.6 in)
1961
28.4 mm (1.1 in)
1962
31.8 mm (1.3 in)
1963
38.9 mm (1.5 in)
1964
52.8 mm (2.1 in)
1965
56.9 mm (2.2 in)
1966
43.7 mm (1.7 in)
1967
50.3 mm (2.0 in)
1968
27.4 mm (1.1 in)
1969
36.1 mm (1.4 in)
1970
55.9 mm (2.2 in)
1971
64.0 mm (2.5 in)
1972
24.9 mm (1.0 in)
1976
27.4 mm (1.1 in)
1977
31.5 mm (1.2 in)
1978
46.7 mm (1.8 in)
1979
61.7 mm (2.4 in)
1980
73.2 mm (2.9 in)
1981
32.5 mm (1.3 in)
1982
61.5 mm (2.4 in)
1983
34.0 mm (1.3 in)
1984
61.0 mm (2.4 in)
1985
38.1 mm (1.5 in)
1986
33.3 mm (1.3 in)
1987
42.4 mm (1.7 in)
1988
19.1 mm (0.8 in)
1989
33.0 mm (1.3 in)
1990
45.7 mm (1.8 in)
1991
30.5 mm (1.2 in)
1992
69.3 mm (2.7 in)
1993
74.9 mm (2.9 in)
1994
52.6 mm (2.1 in)
1995
14.0 mm (0.6 in)
2004
0.8 mm (0.03 in)
Wettest five days (Rx5day)
The wettest five days of the year at Maddock, 1915 to 2004. The record is 164.7 mm (6.5 in) in 1993, marked on the chart; the median year is 62.2 mm (2.4 in).
Wettest five days (Rx5day) at Maddock by year
Year
Wettest five days (Rx5day)
1915
49.8 mm (2.0 in)
1916
100.8 mm (4.0 in)
1917
37.3 mm (1.5 in)
1918
62.8 mm (2.5 in)
1919
48.7 mm (1.9 in)
1920
54.6 mm (2.1 in)
1921
95.0 mm (3.7 in)
1922
75.7 mm (3.0 in)
1923
62.2 mm (2.4 in)
1924
66.6 mm (2.6 in)
1925
80.0 mm (3.1 in)
1926
48.4 mm (1.9 in)
1927
103.2 mm (4.1 in)
1928
87.4 mm (3.4 in)
1929
37.3 mm (1.5 in)
1930
54.1 mm (2.1 in)
1931
67.3 mm (2.6 in)
1932
55.1 mm (2.2 in)
1933
70.1 mm (2.8 in)
1934
45.2 mm (1.8 in)
1935
105.6 mm (4.2 in)
1936
66.5 mm (2.6 in)
1937
122.5 mm (4.8 in)
1938
131.1 mm (5.2 in)
1939
69.6 mm (2.7 in)
1940
29.8 mm (1.2 in)
1941
80.8 mm (3.2 in)
1942
45.5 mm (1.8 in)
1943
43.7 mm (1.7 in)
1944
88.7 mm (3.5 in)
1945
43.4 mm (1.7 in)
1946
112.1 mm (4.4 in)
1947
47.3 mm (1.9 in)
1948
43.5 mm (1.7 in)
1949
58.9 mm (2.3 in)
1950
62.4 mm (2.5 in)
1951
63.7 mm (2.5 in)
1952
104.4 mm (4.1 in)
1953
43.4 mm (1.7 in)
1954
139.7 mm (5.5 in)
1955
45.4 mm (1.8 in)
1956
101.3 mm (4.0 in)
1957
100.9 mm (4.0 in)
1958
135.7 mm (5.3 in)
1959
51.8 mm (2.0 in)
1960
71.6 mm (2.8 in)
1961
40.4 mm (1.6 in)
1962
56.9 mm (2.2 in)
1963
54.7 mm (2.2 in)
1964
83.9 mm (3.3 in)
1965
90.5 mm (3.6 in)
1966
46.5 mm (1.8 in)
1967
52.3 mm (2.1 in)
1968
56.6 mm (2.2 in)
1969
75.3 mm (3.0 in)
1970
60.5 mm (2.4 in)
1971
74.2 mm (2.9 in)
1972
49.6 mm (2.0 in)
1976
50.8 mm (2.0 in)
1977
45.5 mm (1.8 in)
1978
86.8 mm (3.4 in)
1979
90.7 mm (3.6 in)
1980
107.2 mm (4.2 in)
1981
57.7 mm (2.3 in)
1982
93.7 mm (3.7 in)
1983
48.8 mm (1.9 in)
1984
63.5 mm (2.5 in)
1985
54.7 mm (2.2 in)
1986
62.0 mm (2.4 in)
1987
45.4 mm (1.8 in)
1988
27.7 mm (1.1 in)
1989
33.0 mm (1.3 in)
1990
69.3 mm (2.7 in)
1991
47.5 mm (1.9 in)
1992
81.0 mm (3.2 in)
1993
164.7 mm (6.5 in)
1994
75.2 mm (3.0 in)
1995
30.5 mm (1.2 in)
2004
1.3 mm (0.05 in)
Longest dry spell (CDD)
The longest dry spell of the year at Maddock, 1915 to 2004. The record is 64 days in 1918, marked on the chart; the median year is 32 days.
Longest dry spell (CDD) at Maddock by year
Year
Longest dry spell (CDD)
1915
37 days
1916
39 days
1917
41 days
1918
64 days
1919
28 days
1920
58 days
1921
28 days
1922
51 days
1923
31 days
1924
22 days
1925
35 days
1926
33 days
1927
31 days
1928
36 days
1929
40 days
1930
37 days
1931
24 days
1932
28 days
1933
30 days
1934
40 days
1935
25 days
1936
31 days
1937
46 days
1938
58 days
1939
50 days
1940
29 days
1941
31 days
1942
34 days
1943
37 days
1944
33 days
1945
22 days
1946
21 days
1947
24 days
1948
27 days
1949
22 days
1950
16 days
1951
25 days
1952
50 days
1953
26 days
1954
33 days
1955
21 days
1956
26 days
1957
36 days
1958
32 days
1959
30 days
1960
48 days
1961
40 days
1962
22 days
1963
46 days
1964
28 days
1965
40 days
1966
35 days
1967
42 days
1968
56 days
1969
24 days
1970
21 days
1971
44 days
1972
32 days
1976
60 days
1977
29 days
1978
36 days
1979
24 days
1980
59 days
1981
27 days
1982
26 days
1983
44 days
1984
16 days
1985
22 days
1986
39 days
1987
35 days
1988
37 days
1989
28 days
1990
34 days
1991
31 days
1992
32 days
1993
54 days
1994
36 days
1995
18 days
2004
30 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
54 years with a frost
Across 54 years with a frost, the median last spring frost at Maddock falls on 26 May and the median first autumn frost on 13 September, which leaves a median of 113 days between them.
Fitted over all years, the growing season changes by +4.8 days per decade at this station.
Frost dates and growing season at Maddock
Measure
Median, all years
Earliest period
Recent period (1940 to 1971)
Recent against earliest
Fitted trend
Last spring frost
26 May
n/a
23 May
n/a
-2.4 days per decade
First autumn frost
13 September
n/a
15 September
n/a
+2.4 days per decade
Growing days
113 days
n/a
118 days
n/a
+4.8 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
73 years, 1915 to 1994
A day with at least 42.4 mm (1.7 in) of rain is expected about once in 2 years. A day with at least 100.9 mm (4.0 in) of rain is expected about once in 100 years.
Rainfall return levels at Maddock: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
42.4 mm (1.7 in)
5 years
57.4 mm (2.3 in)
10 years
67.6 mm (2.7 in)
25 years
80.8 mm (3.2 in)
50 years
90.8 mm (3.6 in)
100 years
100.9 mm (4.0 in)
Longer than the 73 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, 73 years of values from 1915 to 1994.
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: 94.0 mm (3.7 in) in 1946; 86.9 mm (3.4 in) in 1957; 81.5 mm (3.2 in) in 1956.
Station Changes
2 suspected
2 changes were suspected in the annual mean temperature of Maddock, at 1942 and 1964. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1942 ran 0.3 C (0.5 F) higher than in the years before (likely change).
Relative to 5 neighbouring stations, the station's annual mean temperature from 1964 ran 0.5 C (0.9 F) lower than in the years before (possible change).
Suspected changes in the annual mean temperature at Maddock, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1942
+0.3
+0.5
likely
5
1964
-0.5
-0.9
possible
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.
Download the Data
Data for Maddock standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Maddock 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.