Record envelope, standing records and threshold days for Hopewell 1 SE (USC00393987), South Dakota, United States, with 75 years of record.
Key Facts for Hopewell 1 SE
Hopewell 1 SE (USC00393987) is a weather station in South Dakota, United States at 44.50 latitude and -100.87 longitude, 586 m (1,923 ft) above sea level.
The station reports from 1909 to 1983, 75 years of record.
1,464 records set at Hopewell 1 SE still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Hopewell 1 SE tied a daily record low maximum temperature of -23.3 C (-9.9 F) on 20 December 1983.
About the Station
Location: South Dakota, United States, 44.50 latitude, -100.87 longitude.
Elevation: 586 m (1,923 ft).
Period of record: 1909 to 1983, 75 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 Hopewell 1 SE. 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 Hopewell 1 SE, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
19.4 C (66.9 F)
-38.9 C (-38.0 F)
n/a
n/a
Feb
26.1 C (79.0 F)
-37.8 C (-36.0 F)
n/a
n/a
Mar
32.2 C (90.0 F)
-31.1 C (-24.0 F)
n/a
n/a
Apr
36.1 C (97.0 F)
-18.9 C (-2.0 F)
n/a
n/a
May
40.6 C (105.1 F)
-7.8 C (18.0 F)
n/a
n/a
Jun
44.4 C (111.9 F)
0.6 C (33.1 F)
n/a
n/a
Jul
46.7 C (116.1 F)
-3.3 C (26.1 F)
n/a
n/a
Aug
43.9 C (111.0 F)
1.7 C (35.1 F)
n/a
n/a
Sep
43.3 C (109.9 F)
-10.6 C (12.9 F)
n/a
n/a
Oct
36.7 C (98.1 F)
-21.7 C (-7.1 F)
n/a
n/a
Nov
26.7 C (80.1 F)
-27.8 C (-18.0 F)
n/a
n/a
Dec
21.1 C (70.0 F)
-33.9 C (-29.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Hopewell 1 SE still stand. 1936 holds the most, with 70.
Standing records at Hopewell 1 SE by the year they were set
Year set
Standing records
1909
10
1910
29
1911
46
1912
19
1913
18
1914
27
1915
37
1916
31
1917
31
1918
29
1919
51
1920
26
1921
37
1922
25
1923
17
1924
25
1925
32
1926
17
1927
26
1928
24
1929
24
1930
25
1931
36
1932
29
1933
23
1934
34
1935
28
1936
70
1937
24
1938
12
1939
44
1940
11
1941
24
1942
16
1951
9
1952
12
1953
19
1954
17
1955
14
1956
16
1957
12
1958
18
1959
25
1960
19
1961
8
1962
25
1963
25
1964
21
1965
18
1966
19
1967
21
1968
13
1969
10
1970
10
1971
9
1972
18
1973
12
1974
19
1975
12
1976
18
1977
16
1978
10
1979
14
1980
13
1981
14
1982
8
1983
13
Wettest Day of Each Month
Jul: 126.7 mm (5.0 in)
The wettest day on record for each calendar month at Hopewell 1 SE. The most was 126.7 mm (5.0 in) on 13 July 1937.
Record daily precipitation for each month at Hopewell 1 SE
Month
Record daily precipitation (mm)
Date
Jan
39.6 mm (1.6 in)
2 January 1910
Feb
40.6 mm (1.6 in)
28 February 1930
Mar
76.2 mm (3.0 in)
19 March 1915
Apr
73.7 mm (2.9 in)
30 April 1942
May
72.4 mm (2.9 in)
14 May 1982
Jun
55.9 mm (2.2 in)
7 June 1925
Jul
126.7 mm (5.0 in)
13 July 1937
Aug
81.3 mm (3.2 in)
25 August 1960
Sep
114.8 mm (4.5 in)
20 September 1950
Oct
97.8 mm (3.9 in)
4 October 1951
Nov
39.9 mm (1.6 in)
15 November 1909
Dec
15.2 mm (0.6 in)
21 December 1918
Period of Record Coverage
1909 to 1983
Complete yearUnder 90 percent of days
67 years of record at Hopewell 1 SE, 1909 to 1983. 5 years have data for under 90 percent of days and are left out of rankings: 1909, 1930, 1942, 1951, 1982.
Cooler than the station meanWarmer than the station mean
One stripe for each of 56 complete years at Hopewell 1 SE, 1912 to 1981. Blue stripes are years cooler than the station's own mean of 7.9 C (46.3 F); red stripes are warmer. The coolest year was 1917, at 6.1 C (43.0 F), and the warmest was 1931, at 10.2 C (50.3 F). The strongest colour marks a difference of 2.3 C (4.1 F).
Annual mean temperature at Hopewell 1 SE as warming stripes, 1912 to 1981
Year
Annual mean temperature
Difference from the station mean
1912
7.6 C
-0.33 C
1913
8.2 C
+0.26 C
1914
7.9 C
-0.05 C
1915
6.5 C
-1.50 C
1916
6.4 C
-1.56 C
1917
6.1 C
-1.82 C
1918
8.1 C
+0.17 C
1919
7.6 C
-0.37 C
1920
7.3 C
-0.70 C
1921
9.6 C
+1.62 C
1922
7.1 C
-0.81 C
1923
8.2 C
+0.27 C
1924
6.4 C
-1.57 C
1925
7.7 C
-0.26 C
1926
8.1 C
+0.11 C
1927
6.4 C
-1.52 C
1928
8.5 C
+0.55 C
1929
6.7 C
-1.26 C
1931
10.2 C
+2.22 C
1932
7.6 C
-0.32 C
1933
9.0 C
+1.09 C
1934
10.1 C
+2.16 C
1935
8.2 C
+0.24 C
1936
7.5 C
-0.50 C
1938
9.2 C
+1.23 C
1939
9.7 C
+1.79 C
1940
8.0 C
+0.08 C
1941
9.1 C
+1.14 C
1953
8.6 C
+0.65 C
1954
8.6 C
+0.63 C
1955
7.6 C
-0.34 C
1956
7.7 C
-0.29 C
1957
7.3 C
-0.68 C
1958
7.9 C
-0.01 C
1959
7.7 C
-0.28 C
1960
7.2 C
-0.77 C
1961
8.4 C
+0.48 C
1962
7.5 C
-0.41 C
1963
9.1 C
+1.17 C
1964
8.1 C
+0.12 C
1966
7.1 C
-0.87 C
1967
7.5 C
-0.44 C
1968
7.5 C
-0.41 C
1969
7.5 C
-0.49 C
1970
7.4 C
-0.57 C
1971
7.2 C
-0.74 C
1972
6.7 C
-1.24 C
1973
8.9 C
+0.91 C
1974
9.1 C
+1.12 C
1975
7.6 C
-0.38 C
1976
9.2 C
+1.26 C
1977
8.6 C
+0.61 C
1978
6.5 C
-1.45 C
1979
7.0 C
-0.95 C
1980
9.2 C
+1.24 C
1981
9.7 C
+1.76 C
The fitted trend in annual mean temperature here over 1912 to 1981 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 0.3) per decade. The slope is a straight line fitted to 56 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Hopewell 1 SE
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 0.3) per decade
1912 to 1981
56
Not clearly different from zero
Mean daily maximum
0.03 C (-0.12 to 0.17) per decade
0.05 F (-0.21 to 0.30) per decade
1912 to 1981
56
Not clearly different from zero
Mean daily minimum
0.08 C (-0.03 to 0.20) per decade
0.2 F (-0.1 to 0.4) per decade
1912 to 1981
56
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
1909 to 1983
Yearly extremes at Hopewell 1 SE: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
46.7 C (116.1 F)
1936
41.1 C (106.0 F)
67
Coldest night (TNn)
-38.9 C (-38.0 F)
1916
-30.6 C (-23.1 F)
67
Wettest day (Rx1day)
126.7 mm (5.0 in)
1937
41.2 mm (1.6 in)
68
Wettest five days (Rx5day)
198.4 mm (7.8 in)
1937
61.0 mm (2.4 in)
68
Longest dry spell (CDD)
96 days
1912
38 days
68
Hottest day (TXx)
The hottest day of the year at Hopewell 1 SE, 1909 to 1983. The record is 46.7 C (116.1 F) in 1936, marked on the chart; the median year is 41.1 C (106.0 F).
Hottest day (TXx) at Hopewell 1 SE by year
Year
Hottest day (TXx)
1909
34.4 C (93.9 F)
1910
41.7 C (107.1 F)
1911
41.1 C (106.0 F)
1912
40.6 C (105.1 F)
1913
43.3 C (109.9 F)
1914
43.3 C (109.9 F)
1915
33.3 C (91.9 F)
1916
39.4 C (102.9 F)
1917
43.3 C (109.9 F)
1918
41.1 C (106.0 F)
1919
40.6 C (105.1 F)
1920
38.9 C (102.0 F)
1921
41.7 C (107.1 F)
1922
38.9 C (102.0 F)
1923
38.3 C (100.9 F)
1924
40.6 C (105.1 F)
1925
40.6 C (105.1 F)
1926
42.2 C (108.0 F)
1927
37.8 C (100.0 F)
1928
41.7 C (107.1 F)
1929
43.3 C (109.9 F)
1930
43.9 C (111.0 F)
1931
44.4 C (111.9 F)
1932
40.0 C (104.0 F)
1933
43.9 C (111.0 F)
1934
45.0 C (113.0 F)
1935
43.3 C (109.9 F)
1936
46.7 C (116.1 F)
1937
42.2 C (108.0 F)
1938
42.2 C (108.0 F)
1939
40.0 C (104.0 F)
1940
43.3 C (109.9 F)
1941
43.9 C (111.0 F)
1942
39.4 C (102.9 F)
1950
n/a
1951
31.7 C (89.1 F)
1952
43.9 C (111.0 F)
1953
40.0 C (104.0 F)
1954
40.6 C (105.1 F)
1955
42.2 C (108.0 F)
1956
38.9 C (102.0 F)
1957
38.3 C (100.9 F)
1958
40.0 C (104.0 F)
1959
42.2 C (108.0 F)
1960
41.7 C (107.1 F)
1961
40.0 C (104.0 F)
1962
40.6 C (105.1 F)
1963
42.2 C (108.0 F)
1964
40.0 C (104.0 F)
1965
41.7 C (107.1 F)
1966
42.2 C (108.0 F)
1967
40.6 C (105.1 F)
1968
40.0 C (104.0 F)
1969
40.6 C (105.1 F)
1970
40.6 C (105.1 F)
1971
40.6 C (105.1 F)
1972
40.0 C (104.0 F)
1973
42.2 C (108.0 F)
1974
42.2 C (108.0 F)
1975
42.2 C (108.0 F)
1976
41.1 C (106.0 F)
1977
41.7 C (107.1 F)
1978
41.1 C (106.0 F)
1979
39.4 C (102.9 F)
1980
41.7 C (107.1 F)
1981
37.8 C (100.0 F)
1982
38.3 C (100.9 F)
1983
41.7 C (107.1 F)
Coldest night (TNn)
The coldest night of the year at Hopewell 1 SE, 1909 to 1983. The record is -38.9 C (-38.0 F) in 1916, marked on the chart; the median year is -30.6 C (-23.1 F).
Coldest night (TNn) at Hopewell 1 SE by year
Year
Coldest night (TNn)
1909
-26.7 C (-16.1 F)
1910
-28.9 C (-20.0 F)
1911
-30.6 C (-23.1 F)
1912
-36.7 C (-34.1 F)
1913
-30.0 C (-22.0 F)
1914
-34.4 C (-29.9 F)
1915
-32.2 C (-26.0 F)
1916
-38.9 C (-38.0 F)
1917
-37.8 C (-36.0 F)
1918
-36.7 C (-34.1 F)
1919
-32.2 C (-26.0 F)
1920
-30.0 C (-22.0 F)
1921
-25.0 C (-13.0 F)
1922
-30.6 C (-23.1 F)
1923
-28.9 C (-20.0 F)
1924
-33.3 C (-27.9 F)
1925
-30.0 C (-22.0 F)
1926
-27.2 C (-17.0 F)
1927
-32.2 C (-26.0 F)
1928
-34.4 C (-29.9 F)
1929
-33.3 C (-27.9 F)
1930
-33.3 C (-27.9 F)
1931
-20.6 C (-5.1 F)
1932
-30.6 C (-23.1 F)
1933
-35.0 C (-31.0 F)
1934
-27.2 C (-17.0 F)
1935
-28.9 C (-20.0 F)
1936
-34.4 C (-29.9 F)
1937
-28.3 C (-18.9 F)
1938
-26.7 C (-16.1 F)
1939
-31.1 C (-24.0 F)
1940
-30.0 C (-22.0 F)
1941
-24.4 C (-11.9 F)
1942
-30.0 C (-22.0 F)
1950
n/a
1951
-33.3 C (-27.9 F)
1952
-27.2 C (-17.0 F)
1953
-27.2 C (-17.0 F)
1954
-30.6 C (-23.1 F)
1955
-28.3 C (-18.9 F)
1956
-27.2 C (-17.0 F)
1957
-30.0 C (-22.0 F)
1958
-28.3 C (-18.9 F)
1959
-28.3 C (-18.9 F)
1960
-30.6 C (-23.1 F)
1961
-26.1 C (-15.0 F)
1962
-32.8 C (-27.0 F)
1963
-32.2 C (-26.0 F)
1964
-31.7 C (-25.1 F)
1965
-29.4 C (-20.9 F)
1966
-36.1 C (-33.0 F)
1967
-33.3 C (-27.9 F)
1968
-31.1 C (-24.0 F)
1969
-29.4 C (-20.9 F)
1970
-31.7 C (-25.1 F)
1971
-30.6 C (-23.1 F)
1972
-32.8 C (-27.0 F)
1973
-30.0 C (-22.0 F)
1974
-27.2 C (-17.0 F)
1975
-30.6 C (-23.1 F)
1976
-29.4 C (-20.9 F)
1977
-30.0 C (-22.0 F)
1978
-30.6 C (-23.1 F)
1979
-31.7 C (-25.1 F)
1980
-27.8 C (-18.0 F)
1981
-26.1 C (-15.0 F)
1982
-33.3 C (-27.9 F)
1983
-27.8 C (-18.0 F)
Wettest day (Rx1day)
The wettest day of the year at Hopewell 1 SE, 1909 to 1983. The record is 126.7 mm (5.0 in) in 1937, marked on the chart; the median year is 41.2 mm (1.6 in).
Wettest day (Rx1day) at Hopewell 1 SE by year
Year
Wettest day (Rx1day)
1909
39.9 mm (1.6 in)
1910
39.6 mm (1.6 in)
1911
53.3 mm (2.1 in)
1912
28.4 mm (1.1 in)
1913
32.0 mm (1.3 in)
1914
28.4 mm (1.1 in)
1915
76.2 mm (3.0 in)
1916
36.8 mm (1.4 in)
1917
50.8 mm (2.0 in)
1918
25.4 mm (1.0 in)
1919
39.4 mm (1.6 in)
1920
50.8 mm (2.0 in)
1921
44.2 mm (1.7 in)
1922
38.6 mm (1.5 in)
1923
27.9 mm (1.1 in)
1924
51.3 mm (2.0 in)
1925
55.9 mm (2.2 in)
1926
28.4 mm (1.1 in)
1927
70.1 mm (2.8 in)
1928
36.6 mm (1.4 in)
1929
61.0 mm (2.4 in)
1930
42.9 mm (1.7 in)
1931
35.6 mm (1.4 in)
1932
45.0 mm (1.8 in)
1933
29.2 mm (1.1 in)
1934
41.7 mm (1.6 in)
1935
32.8 mm (1.3 in)
1936
16.5 mm (0.6 in)
1937
126.7 mm (5.0 in)
1938
86.9 mm (3.4 in)
1939
35.6 mm (1.4 in)
1940
28.4 mm (1.1 in)
1941
27.7 mm (1.1 in)
1942
73.7 mm (2.9 in)
1950
114.8 mm (4.5 in)
1951
97.8 mm (3.9 in)
1952
40.1 mm (1.6 in)
1953
50.8 mm (2.0 in)
1954
50.8 mm (2.0 in)
1955
50.8 mm (2.0 in)
1956
24.9 mm (1.0 in)
1957
29.5 mm (1.2 in)
1958
27.9 mm (1.1 in)
1959
44.2 mm (1.7 in)
1960
81.3 mm (3.2 in)
1961
40.1 mm (1.6 in)
1962
34.3 mm (1.4 in)
1963
41.9 mm (1.6 in)
1964
61.7 mm (2.4 in)
1965
34.3 mm (1.4 in)
1966
31.8 mm (1.3 in)
1967
67.3 mm (2.6 in)
1968
50.0 mm (2.0 in)
1969
40.6 mm (1.6 in)
1970
53.3 mm (2.1 in)
1971
65.0 mm (2.6 in)
1972
32.0 mm (1.3 in)
1973
51.6 mm (2.0 in)
1974
30.2 mm (1.2 in)
1975
27.4 mm (1.1 in)
1976
25.9 mm (1.0 in)
1977
53.3 mm (2.1 in)
1978
50.8 mm (2.0 in)
1979
43.2 mm (1.7 in)
1980
52.3 mm (2.1 in)
1981
34.8 mm (1.4 in)
1982
72.4 mm (2.9 in)
1983
30.5 mm (1.2 in)
Wettest five days (Rx5day)
The wettest five days of the year at Hopewell 1 SE, 1909 to 1983. The record is 198.4 mm (7.8 in) in 1937, marked on the chart; the median year is 61.0 mm (2.4 in).
Wettest five days (Rx5day) at Hopewell 1 SE by year
Year
Wettest five days (Rx5day)
1909
39.9 mm (1.6 in)
1910
44.7 mm (1.8 in)
1911
55.8 mm (2.2 in)
1912
35.5 mm (1.4 in)
1913
47.0 mm (1.9 in)
1914
45.7 mm (1.8 in)
1915
89.9 mm (3.5 in)
1916
63.4 mm (2.5 in)
1917
59.7 mm (2.4 in)
1918
47.2 mm (1.9 in)
1919
40.7 mm (1.6 in)
1920
52.0 mm (2.0 in)
1921
61.0 mm (2.4 in)
1922
50.1 mm (2.0 in)
1923
67.3 mm (2.6 in)
1924
104.1 mm (4.1 in)
1925
83.0 mm (3.3 in)
1926
38.5 mm (1.5 in)
1927
128.0 mm (5.0 in)
1928
51.4 mm (2.0 in)
1929
61.0 mm (2.4 in)
1930
44.4 mm (1.7 in)
1931
37.8 mm (1.5 in)
1932
67.1 mm (2.6 in)
1933
40.6 mm (1.6 in)
1934
47.6 mm (1.9 in)
1935
71.0 mm (2.8 in)
1936
18.5 mm (0.7 in)
1937
198.4 mm (7.8 in)
1938
92.9 mm (3.7 in)
1939
53.4 mm (2.1 in)
1940
36.6 mm (1.4 in)
1941
75.2 mm (3.0 in)
1942
100.3 mm (3.9 in)
1950
123.3 mm (4.9 in)
1951
99.3 mm (3.9 in)
1952
82.1 mm (3.2 in)
1953
56.2 mm (2.2 in)
1954
50.8 mm (2.0 in)
1955
73.2 mm (2.9 in)
1956
47.2 mm (1.9 in)
1957
55.9 mm (2.2 in)
1958
52.8 mm (2.1 in)
1959
57.6 mm (2.3 in)
1960
88.4 mm (3.5 in)
1961
99.6 mm (3.9 in)
1962
72.4 mm (2.9 in)
1963
61.0 mm (2.4 in)
1964
81.7 mm (3.2 in)
1965
42.0 mm (1.7 in)
1966
38.7 mm (1.5 in)
1967
133.3 mm (5.2 in)
1968
69.1 mm (2.7 in)
1969
91.4 mm (3.6 in)
1970
78.2 mm (3.1 in)
1971
105.4 mm (4.1 in)
1972
77.2 mm (3.0 in)
1973
82.8 mm (3.3 in)
1974
37.6 mm (1.5 in)
1975
54.1 mm (2.1 in)
1976
29.9 mm (1.2 in)
1977
72.9 mm (2.9 in)
1978
66.8 mm (2.6 in)
1979
86.1 mm (3.4 in)
1980
74.2 mm (2.9 in)
1981
80.4 mm (3.2 in)
1982
118.8 mm (4.7 in)
1983
46.7 mm (1.8 in)
Longest dry spell (CDD)
The longest dry spell of the year at Hopewell 1 SE, 1909 to 1983. The record is 96 days in 1912, marked on the chart; the median year is 38 days.
Longest dry spell (CDD) at Hopewell 1 SE by year
Year
Longest dry spell (CDD)
1909
37 days
1910
41 days
1911
29 days
1912
96 days
1913
34 days
1914
44 days
1915
40 days
1916
34 days
1917
29 days
1918
30 days
1919
28 days
1920
22 days
1921
49 days
1922
40 days
1923
48 days
1924
24 days
1925
34 days
1926
49 days
1927
28 days
1928
34 days
1929
39 days
1930
41 days
1931
45 days
1932
37 days
1933
41 days
1934
35 days
1935
45 days
1936
35 days
1937
67 days
1938
33 days
1939
70 days
1940
29 days
1941
51 days
1942
37 days
1950
29 days
1951
37 days
1952
64 days
1953
22 days
1954
34 days
1955
45 days
1956
25 days
1957
45 days
1958
95 days
1959
38 days
1960
46 days
1961
40 days
1962
38 days
1963
61 days
1964
63 days
1965
23 days
1966
24 days
1967
42 days
1968
42 days
1969
34 days
1970
34 days
1971
31 days
1972
41 days
1973
28 days
1974
49 days
1975
29 days
1976
40 days
1977
25 days
1978
28 days
1979
37 days
1980
28 days
1981
41 days
1982
41 days
1983
57 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
56 years with a frost
Across 56 years with a frost, the median last spring frost at Hopewell 1 SE falls on 8 May and the median first autumn frost on 30 September, which leaves a median of 146 days between them.
Fitted over all years, the growing season changes by +2.0 days per decade at this station.
Frost dates and growing season at Hopewell 1 SE
Measure
Median, all years
Earliest period
Recent period (1940 to 1981)
Recent against earliest
Fitted trend
Last spring frost
8 May
n/a
8 May
n/a
-0.8 days per decade
First autumn frost
30 September
n/a
3 October
n/a
+1.2 days per decade
Growing days
146 days
n/a
147 days
n/a
+2.0 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
63 years, 1910 to 1983
A day with at least 40.4 mm (1.6 in) of rain is expected about once in 2 years. A day with at least 120.5 mm (4.7 in) of rain is expected about once in 100 years.
Rainfall return levels at Hopewell 1 SE: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
40.4 mm (1.6 in)
5 years
56.5 mm (2.2 in)
10 years
69.0 mm (2.7 in)
25 years
87.3 mm (3.4 in)
50 years
103.0 mm (4.1 in)
100 years
120.5 mm (4.7 in)
Longer than the 63 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, 63 years of values from 1910 to 1983.
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: 126.7 mm (5.0 in) in 1937; 97.8 mm (3.9 in) in 1951; 86.9 mm (3.4 in) in 1938.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Hopewell 1 SE standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Hopewell 1 SE 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.