Record envelope, standing records and threshold days for Redfield (USC00397047), South Dakota, United States, with 81 years of record.
Key Facts for Redfield
Redfield (USC00397047) is a weather station in South Dakota, United States at 44.87 latitude and -98.53 longitude, 397 m (1,302 ft) above sea level.
The station reports from 1897 to 1977, 81 years of record.
1,464 records set at Redfield still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Redfield set a daily record low minimum temperature of -25.0 C (-13.0 F) on 26 November 1977.
About the Station
Location: South Dakota, United States, 44.87 latitude, -98.53 longitude.
Elevation: 397 m (1,302 ft).
Period of record: 1897 to 1977, 81 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 Redfield. 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 Redfield, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
17.8 C (64.0 F)
-42.2 C (-44.0 F)
n/a
n/a
Feb
21.7 C (71.1 F)
-41.1 C (-42.0 F)
n/a
n/a
Mar
30.6 C (87.1 F)
-31.7 C (-25.1 F)
n/a
n/a
Apr
35.0 C (95.0 F)
-21.1 C (-6.0 F)
n/a
n/a
May
38.9 C (102.0 F)
-8.3 C (17.1 F)
n/a
n/a
Jun
44.4 C (111.9 F)
-2.8 C (27.0 F)
n/a
n/a
Jul
46.7 C (116.1 F)
1.7 C (35.1 F)
n/a
n/a
Aug
46.7 C (116.1 F)
-1.1 C (30.0 F)
n/a
n/a
Sep
43.9 C (111.0 F)
-10.0 C (14.0 F)
n/a
n/a
Oct
36.1 C (97.0 F)
-19.4 C (-2.9 F)
n/a
n/a
Nov
25.0 C (77.0 F)
-30.6 C (-23.1 F)
n/a
n/a
Dec
21.1 C (70.0 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 Redfield still stand. 1936 holds the most, with 46.
Standing records at Redfield by the year they were set
Year set
Standing records
1897
9
1898
20
1899
30
1900
13
1901
19
1902
21
1903
19
1904
20
1905
31
1906
21
1907
26
1908
19
1909
22
1910
18
1911
33
1912
27
1913
24
1914
16
1915
17
1916
25
1917
31
1918
16
1919
17
1920
12
1921
19
1922
12
1923
16
1924
19
1925
21
1926
17
1927
24
1928
18
1929
16
1930
20
1931
38
1932
20
1933
24
1934
29
1935
16
1936
46
1937
26
1938
10
1939
29
1940
14
1941
23
1942
16
1943
12
1944
17
1945
12
1946
11
1947
21
1948
14
1949
12
1950
21
1951
20
1952
12
1953
14
1954
14
1955
23
1956
11
1957
6
1958
11
1959
17
1960
10
1961
8
1962
17
1963
11
1964
16
1965
15
1966
20
1967
8
1968
14
1969
18
1970
10
1971
11
1972
11
1973
13
1974
10
1975
12
1976
16
1977
17
All-Time Record Progression
5 new records
5 all-time records were set at Redfield between 1 August 1930 and 15 July 1931. Each dot is a new record.
When Redfield set new all-time records
Date
Kind
Detail
1930-08-01
Record high maximum temperature
Record high maximum temperature 43.9 C (111.0 F)
1931-06-27
Record high minimum temperature
Record high minimum temperature 27.8 C (82.0 F)
1931-06-28
Record high maximum temperature
Record high maximum temperature 44.4 C (111.9 F)
1931-07-14
Record high maximum temperature
Record high maximum temperature 45.0 C (113.0 F)
1931-07-15
Record high maximum temperature
Record high maximum temperature 46.7 C (116.1 F)
Wettest Day of Each Month
Sep: 115.8 mm (4.6 in)
The wettest day on record for each calendar month at Redfield. The most was 115.8 mm (4.6 in) on 14 September 1900.
Record daily precipitation for each month at Redfield
Month
Record daily precipitation (mm)
Date
Jan
61.0 mm (2.4 in)
9 January 1939
Feb
40.6 mm (1.6 in)
27 February 1958
Mar
47.8 mm (1.9 in)
11 March 1977
Apr
101.6 mm (4.0 in)
13 April 1912
May
68.6 mm (2.7 in)
14 May 1908
Jun
83.3 mm (3.3 in)
14 June 1967
Jul
90.2 mm (3.6 in)
13 July 1966
Aug
97.0 mm (3.8 in)
16 August 1940
Sep
115.8 mm (4.6 in)
14 September 1900
Oct
58.4 mm (2.3 in)
2 October 1941
Nov
34.5 mm (1.4 in)
20 November 1930
Dec
35.6 mm (1.4 in)
26 December 1916
Period of Record Coverage
1897 to 1977
Complete yearUnder 90 percent of days
81 years of record at Redfield, 1897 to 1977. 3 years have data for under 90 percent of days and are left out of rankings: 1897, 1910, 1934.
Cooler than the station meanWarmer than the station mean
One stripe for each of 73 complete years at Redfield, 1898 to 1976. Blue stripes are years cooler than the station's own mean of 7.0 C (44.6 F); red stripes are warmer. The coolest year was 1917, at 4.3 C (39.7 F), and the warmest was 1921, at 9.5 C (49.2 F). The strongest colour marks a difference of 2.8 C (5.0 F).
Annual mean temperature at Redfield as warming stripes, 1898 to 1976
Year
Annual mean temperature
Difference from the station mean
1898
6.7 C
-0.29 C
1899
5.9 C
-1.07 C
1900
7.7 C
+0.74 C
1901
7.4 C
+0.41 C
1902
5.8 C
-1.20 C
1903
5.1 C
-1.92 C
1904
4.9 C
-2.05 C
1905
5.4 C
-1.58 C
1906
5.7 C
-1.25 C
1907
4.9 C
-2.08 C
1908
6.7 C
-0.33 C
1911
5.8 C
-1.20 C
1912
5.6 C
-1.37 C
1913
7.0 C
+0.03 C
1914
6.9 C
-0.04 C
1915
6.2 C
-0.79 C
1916
5.0 C
-1.98 C
1917
4.3 C
-2.73 C
1918
6.5 C
-0.51 C
1920
7.7 C
+0.71 C
1921
9.5 C
+2.55 C
1922
7.6 C
+0.59 C
1923
8.2 C
+1.19 C
1924
5.8 C
-1.15 C
1925
7.8 C
+0.77 C
1926
8.0 C
+1.06 C
1927
6.6 C
-0.38 C
1928
8.2 C
+1.17 C
1929
6.4 C
-0.56 C
1930
8.5 C
+1.50 C
1932
7.2 C
+0.26 C
1933
8.5 C
+1.48 C
1936
6.8 C
-0.15 C
1937
7.3 C
+0.27 C
1938
8.8 C
+1.86 C
1939
9.3 C
+2.28 C
1940
7.9 C
+0.92 C
1941
8.9 C
+1.95 C
1942
7.9 C
+0.88 C
1943
7.6 C
+0.60 C
1944
7.9 C
+0.93 C
1945
7.1 C
+0.13 C
1946
8.2 C
+1.25 C
1947
7.6 C
+0.61 C
1948
7.3 C
+0.27 C
1949
7.2 C
+0.23 C
1950
5.0 C
-2.01 C
1951
5.1 C
-1.90 C
1952
7.1 C
+0.08 C
1953
7.9 C
+0.93 C
1954
7.9 C
+0.88 C
1955
7.1 C
+0.16 C
1956
6.7 C
-0.25 C
1957
7.3 C
+0.27 C
1958
7.7 C
+0.67 C
1959
7.3 C
+0.36 C
1960
6.1 C
-0.84 C
1961
7.2 C
+0.24 C
1962
6.8 C
-0.16 C
1963
8.0 C
+1.06 C
1964
7.6 C
+0.60 C
1965
6.4 C
-0.55 C
1966
6.1 C
-0.85 C
1967
6.9 C
-0.11 C
1968
6.9 C
-0.07 C
1969
6.2 C
-0.82 C
1970
6.4 C
-0.57 C
1971
6.6 C
-0.42 C
1972
5.7 C
-1.28 C
1973
8.0 C
+1.00 C
1974
7.7 C
+0.73 C
1975
7.0 C
+0.06 C
1976
7.9 C
+0.96 C
The annual mean temperature here has risen by 0.12 C (0.01 to 0.23) per decade over 1898 to 1976. In Fahrenheit: 0.22 F (0.02 to 0.41) per decade. The slope is a straight line fitted to 73 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Redfield
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.12 C (0.01 to 0.23) per decade
0.22 F (0.02 to 0.41) per decade
1898 to 1976
73
Rise
Mean daily maximum
-0.03 C (-0.15 to 0.10) per decade
-0.05 F (-0.27 to 0.18) per decade
1898 to 1976
73
Not clearly different from zero
Mean daily minimum
0.3 C (0.2 to 0.4) per decade
0.5 F (0.3 to 0.7) per decade
1898 to 1976
73
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
1897 to 1977
Yearly extremes at Redfield: 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)
1931
39.4 C (102.9 F)
81
Coldest night (TNn)
-42.2 C (-44.0 F)
1912
-33.3 C (-27.9 F)
81
Wettest day (Rx1day)
115.8 mm (4.6 in)
1900
49.0 mm (1.9 in)
81
Wettest five days (Rx5day)
175.3 mm (6.9 in)
1967
66.8 mm (2.6 in)
81
Longest dry spell (CDD)
82 days
1921
38 days
81
Hottest day (TXx)
The hottest day of the year at Redfield, 1897 to 1977. The record is 46.7 C (116.1 F) in 1931, marked on the chart; the median year is 39.4 C (102.9 F).
Hottest day (TXx) at Redfield by year
Year
Hottest day (TXx)
1897
26.7 C (80.1 F)
1898
38.3 C (100.9 F)
1899
40.6 C (105.1 F)
1900
40.6 C (105.1 F)
1901
41.1 C (106.0 F)
1902
38.3 C (100.9 F)
1903
35.0 C (95.0 F)
1904
40.0 C (104.0 F)
1905
36.7 C (98.1 F)
1906
36.7 C (98.1 F)
1907
37.8 C (100.0 F)
1908
38.9 C (102.0 F)
1909
37.2 C (99.0 F)
1910
37.8 C (100.0 F)
1911
41.7 C (107.1 F)
1912
36.7 C (98.1 F)
1913
42.2 C (108.0 F)
1914
39.4 C (102.9 F)
1915
33.9 C (93.0 F)
1916
39.4 C (102.9 F)
1917
43.3 C (109.9 F)
1918
37.8 C (100.0 F)
1919
42.2 C (108.0 F)
1920
38.3 C (100.9 F)
1921
40.6 C (105.1 F)
1922
41.1 C (106.0 F)
1923
36.1 C (97.0 F)
1924
34.4 C (93.9 F)
1925
41.1 C (106.0 F)
1926
42.8 C (109.0 F)
1927
38.3 C (100.9 F)
1928
40.6 C (105.1 F)
1929
40.6 C (105.1 F)
1930
43.9 C (111.0 F)
1931
46.7 C (116.1 F)
1932
43.3 C (109.9 F)
1933
43.9 C (111.0 F)
1934
45.6 C (114.1 F)
1935
40.6 C (105.1 F)
1936
44.4 C (111.9 F)
1937
43.9 C (111.0 F)
1938
42.8 C (109.0 F)
1939
39.4 C (102.9 F)
1940
42.8 C (109.0 F)
1941
43.3 C (109.9 F)
1942
36.1 C (97.0 F)
1943
41.1 C (106.0 F)
1944
36.7 C (98.1 F)
1945
38.3 C (100.9 F)
1946
37.2 C (99.0 F)
1947
42.8 C (109.0 F)
1948
38.9 C (102.0 F)
1949
41.7 C (107.1 F)
1950
39.4 C (102.9 F)
1951
38.3 C (100.9 F)
1952
39.4 C (102.9 F)
1953
36.7 C (98.1 F)
1954
38.3 C (100.9 F)
1955
39.4 C (102.9 F)
1956
39.4 C (102.9 F)
1957
38.9 C (102.0 F)
1958
40.6 C (105.1 F)
1959
41.7 C (107.1 F)
1960
39.4 C (102.9 F)
1961
38.3 C (100.9 F)
1962
36.7 C (98.1 F)
1963
39.4 C (102.9 F)
1964
40.0 C (104.0 F)
1965
46.7 C (116.1 F)
1966
45.0 C (113.0 F)
1967
38.9 C (102.0 F)
1968
37.8 C (100.0 F)
1969
37.2 C (99.0 F)
1970
38.9 C (102.0 F)
1971
39.4 C (102.9 F)
1972
36.7 C (98.1 F)
1973
40.0 C (104.0 F)
1974
39.4 C (102.9 F)
1975
43.3 C (109.9 F)
1976
41.7 C (107.1 F)
1977
41.1 C (106.0 F)
Coldest night (TNn)
The coldest night of the year at Redfield, 1897 to 1977. The record is -42.2 C (-44.0 F) in 1912, marked on the chart; the median year is -33.3 C (-27.9 F).
Coldest night (TNn) at Redfield by year
Year
Coldest night (TNn)
1897
-30.6 C (-23.1 F)
1898
-29.4 C (-20.9 F)
1899
-40.0 C (-40.0 F)
1900
-30.0 C (-22.0 F)
1901
-32.2 C (-26.0 F)
1902
-34.4 C (-29.9 F)
1903
-34.4 C (-29.9 F)
1904
-36.7 C (-34.1 F)
1905
-40.0 C (-40.0 F)
1906
-35.0 C (-31.0 F)
1907
-35.0 C (-31.0 F)
1908
-28.9 C (-20.0 F)
1909
-36.1 C (-33.0 F)
1910
-31.7 C (-25.1 F)
1911
-33.3 C (-27.9 F)
1912
-42.2 C (-44.0 F)
1913
-31.7 C (-25.1 F)
1914
-33.9 C (-29.0 F)
1915
-35.0 C (-31.0 F)
1916
-39.4 C (-38.9 F)
1917
-39.4 C (-38.9 F)
1918
-34.4 C (-29.9 F)
1919
-28.9 C (-20.0 F)
1920
-28.9 C (-20.0 F)
1921
-27.8 C (-18.0 F)
1922
-33.3 C (-27.9 F)
1923
-28.9 C (-20.0 F)
1924
-36.1 C (-33.0 F)
1925
-30.0 C (-22.0 F)
1926
-33.3 C (-27.9 F)
1927
-32.8 C (-27.0 F)
1928
-34.4 C (-29.9 F)
1929
-38.3 C (-36.9 F)
1930
-34.4 C (-29.9 F)
1931
-25.6 C (-14.1 F)
1932
-34.4 C (-29.9 F)
1933
-34.4 C (-29.9 F)
1934
-27.8 C (-18.0 F)
1935
-26.7 C (-16.1 F)
1936
-41.1 C (-42.0 F)
1937
-31.7 C (-25.1 F)
1938
-31.1 C (-24.0 F)
1939
-32.2 C (-26.0 F)
1940
-30.6 C (-23.1 F)
1941
-26.7 C (-16.1 F)
1942
-32.2 C (-26.0 F)
1943
-35.0 C (-31.0 F)
1944
-31.7 C (-25.1 F)
1945
-28.3 C (-18.9 F)
1946
-27.2 C (-17.0 F)
1947
-28.9 C (-20.0 F)
1948
-31.7 C (-25.1 F)
1949
-35.0 C (-31.0 F)
1950
-33.3 C (-27.9 F)
1951
-35.0 C (-31.0 F)
1952
-29.4 C (-20.9 F)
1953
-30.0 C (-22.0 F)
1954
-33.3 C (-27.9 F)
1955
-33.3 C (-27.9 F)
1956
-34.4 C (-29.9 F)
1957
-31.7 C (-25.1 F)
1958
-36.7 C (-34.1 F)
1959
-35.0 C (-31.0 F)
1960
-33.9 C (-29.0 F)
1961
-33.9 C (-29.0 F)
1962
-33.9 C (-29.0 F)
1963
-35.6 C (-32.1 F)
1964
-31.7 C (-25.1 F)
1965
-32.8 C (-27.0 F)
1966
-37.2 C (-35.0 F)
1967
-35.6 C (-32.1 F)
1968
-34.4 C (-29.9 F)
1969
-30.6 C (-23.1 F)
1970
-37.2 C (-35.0 F)
1971
-35.0 C (-31.0 F)
1972
-37.2 C (-35.0 F)
1973
-30.6 C (-23.1 F)
1974
-33.3 C (-27.9 F)
1975
-30.0 C (-22.0 F)
1976
-32.2 C (-26.0 F)
1977
-32.8 C (-27.0 F)
Wettest day (Rx1day)
The wettest day of the year at Redfield, 1897 to 1977. The record is 115.8 mm (4.6 in) in 1900, marked on the chart; the median year is 49.0 mm (1.9 in).
Wettest day (Rx1day) at Redfield by year
Year
Wettest day (Rx1day)
1897
31.0 mm (1.2 in)
1898
53.3 mm (2.1 in)
1899
81.5 mm (3.2 in)
1900
115.8 mm (4.6 in)
1901
41.1 mm (1.6 in)
1902
50.8 mm (2.0 in)
1903
41.7 mm (1.6 in)
1904
40.1 mm (1.6 in)
1905
50.3 mm (2.0 in)
1906
57.9 mm (2.3 in)
1907
47.0 mm (1.9 in)
1908
68.6 mm (2.7 in)
1909
61.0 mm (2.4 in)
1910
38.1 mm (1.5 in)
1911
46.5 mm (1.8 in)
1912
101.6 mm (4.0 in)
1913
44.7 mm (1.8 in)
1914
50.8 mm (2.0 in)
1915
35.6 mm (1.4 in)
1916
63.5 mm (2.5 in)
1917
40.6 mm (1.6 in)
1918
43.2 mm (1.7 in)
1919
45.7 mm (1.8 in)
1920
55.1 mm (2.2 in)
1921
50.8 mm (2.0 in)
1922
38.6 mm (1.5 in)
1923
60.5 mm (2.4 in)
1924
52.8 mm (2.1 in)
1925
49.8 mm (2.0 in)
1926
30.0 mm (1.2 in)
1927
51.3 mm (2.0 in)
1928
65.0 mm (2.6 in)
1929
20.3 mm (0.8 in)
1930
52.3 mm (2.1 in)
1931
34.8 mm (1.4 in)
1932
24.4 mm (1.0 in)
1933
51.8 mm (2.0 in)
1934
32.0 mm (1.3 in)
1935
37.6 mm (1.5 in)
1936
36.8 mm (1.4 in)
1937
30.5 mm (1.2 in)
1938
39.6 mm (1.6 in)
1939
61.0 mm (2.4 in)
1940
97.0 mm (3.8 in)
1941
58.4 mm (2.3 in)
1942
38.6 mm (1.5 in)
1943
28.2 mm (1.1 in)
1944
47.0 mm (1.9 in)
1945
40.4 mm (1.6 in)
1946
34.8 mm (1.4 in)
1947
47.2 mm (1.9 in)
1948
55.9 mm (2.2 in)
1949
41.9 mm (1.6 in)
1950
39.4 mm (1.6 in)
1951
49.0 mm (1.9 in)
1952
60.5 mm (2.4 in)
1953
52.8 mm (2.1 in)
1954
71.6 mm (2.8 in)
1955
37.1 mm (1.5 in)
1956
58.4 mm (2.3 in)
1957
54.9 mm (2.2 in)
1958
40.6 mm (1.6 in)
1959
34.3 mm (1.4 in)
1960
49.5 mm (1.9 in)
1961
52.1 mm (2.1 in)
1962
50.8 mm (2.0 in)
1963
44.5 mm (1.8 in)
1964
57.9 mm (2.3 in)
1965
32.5 mm (1.3 in)
1966
90.2 mm (3.6 in)
1967
83.3 mm (3.3 in)
1968
39.9 mm (1.6 in)
1969
51.8 mm (2.0 in)
1970
55.4 mm (2.2 in)
1971
48.8 mm (1.9 in)
1972
52.6 mm (2.1 in)
1973
25.4 mm (1.0 in)
1974
39.4 mm (1.6 in)
1975
25.9 mm (1.0 in)
1976
59.7 mm (2.4 in)
1977
51.6 mm (2.0 in)
Wettest five days (Rx5day)
The wettest five days of the year at Redfield, 1897 to 1977. The record is 175.3 mm (6.9 in) in 1967, marked on the chart; the median year is 66.8 mm (2.6 in).
Wettest five days (Rx5day) at Redfield by year
Year
Wettest five days (Rx5day)
1897
31.0 mm (1.2 in)
1898
87.1 mm (3.4 in)
1899
123.4 mm (4.9 in)
1900
122.2 mm (4.8 in)
1901
74.4 mm (2.9 in)
1902
81.8 mm (3.2 in)
1903
84.6 mm (3.3 in)
1904
40.4 mm (1.6 in)
1905
78.5 mm (3.1 in)
1906
81.8 mm (3.2 in)
1907
91.3 mm (3.6 in)
1908
75.7 mm (3.0 in)
1909
78.3 mm (3.1 in)
1910
38.6 mm (1.5 in)
1911
55.1 mm (2.2 in)
1912
111.8 mm (4.4 in)
1913
58.0 mm (2.3 in)
1914
87.2 mm (3.4 in)
1915
80.8 mm (3.2 in)
1916
86.1 mm (3.4 in)
1917
40.6 mm (1.6 in)
1918
51.8 mm (2.0 in)
1919
56.1 mm (2.2 in)
1920
81.5 mm (3.2 in)
1921
73.7 mm (2.9 in)
1922
63.3 mm (2.5 in)
1923
66.1 mm (2.6 in)
1924
69.9 mm (2.8 in)
1925
51.6 mm (2.0 in)
1926
50.5 mm (2.0 in)
1927
64.1 mm (2.5 in)
1928
66.0 mm (2.6 in)
1929
59.7 mm (2.4 in)
1930
101.0 mm (4.0 in)
1931
50.2 mm (2.0 in)
1932
51.1 mm (2.0 in)
1933
60.9 mm (2.4 in)
1934
38.4 mm (1.5 in)
1935
76.5 mm (3.0 in)
1936
37.1 mm (1.5 in)
1937
45.2 mm (1.8 in)
1938
66.8 mm (2.6 in)
1939
63.8 mm (2.5 in)
1940
130.0 mm (5.1 in)
1941
62.2 mm (2.4 in)
1942
56.6 mm (2.2 in)
1943
58.2 mm (2.3 in)
1944
54.4 mm (2.1 in)
1945
59.5 mm (2.3 in)
1946
78.0 mm (3.1 in)
1947
59.9 mm (2.4 in)
1948
91.3 mm (3.6 in)
1949
47.5 mm (1.9 in)
1950
67.6 mm (2.7 in)
1951
62.2 mm (2.4 in)
1952
87.9 mm (3.5 in)
1953
117.0 mm (4.6 in)
1954
74.9 mm (2.9 in)
1955
72.1 mm (2.8 in)
1956
82.2 mm (3.2 in)
1957
87.4 mm (3.4 in)
1958
51.8 mm (2.0 in)
1959
34.3 mm (1.4 in)
1960
61.7 mm (2.4 in)
1961
98.8 mm (3.9 in)
1962
83.1 mm (3.3 in)
1963
52.6 mm (2.1 in)
1964
62.5 mm (2.5 in)
1965
59.4 mm (2.3 in)
1966
102.9 mm (4.1 in)
1967
175.3 mm (6.9 in)
1968
107.5 mm (4.2 in)
1969
64.8 mm (2.6 in)
1970
96.5 mm (3.8 in)
1971
58.1 mm (2.3 in)
1972
105.5 mm (4.2 in)
1973
48.2 mm (1.9 in)
1974
66.8 mm (2.6 in)
1975
57.9 mm (2.3 in)
1976
69.1 mm (2.7 in)
1977
83.4 mm (3.3 in)
Longest dry spell (CDD)
The longest dry spell of the year at Redfield, 1897 to 1977. The record is 82 days in 1921, marked on the chart; the median year is 38 days.
Longest dry spell (CDD) at Redfield by year
Year
Longest dry spell (CDD)
1897
23 days
1898
33 days
1899
39 days
1900
27 days
1901
38 days
1902
22 days
1903
31 days
1904
35 days
1905
23 days
1906
17 days
1907
45 days
1908
30 days
1909
45 days
1910
41 days
1911
48 days
1912
66 days
1913
51 days
1914
45 days
1915
37 days
1916
49 days
1917
76 days
1918
33 days
1919
45 days
1920
28 days
1921
82 days
1922
31 days
1923
46 days
1924
33 days
1925
49 days
1926
41 days
1927
23 days
1928
52 days
1929
22 days
1930
31 days
1931
24 days
1932
29 days
1933
55 days
1934
62 days
1935
26 days
1936
45 days
1937
35 days
1938
34 days
1939
71 days
1940
30 days
1941
40 days
1942
53 days
1943
55 days
1944
36 days
1945
30 days
1946
36 days
1947
40 days
1948
35 days
1949
77 days
1950
35 days
1951
33 days
1952
56 days
1953
26 days
1954
52 days
1955
47 days
1956
41 days
1957
32 days
1958
44 days
1959
42 days
1960
30 days
1961
39 days
1962
38 days
1963
33 days
1964
39 days
1965
52 days
1966
35 days
1967
35 days
1968
67 days
1969
19 days
1970
29 days
1971
55 days
1972
23 days
1973
32 days
1974
48 days
1975
40 days
1976
39 days
1977
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
73 years with a frost
Across 73 years with a frost, the median last spring frost at Redfield falls on 13 May and the median first autumn frost on 25 September, which leaves a median of 134 days between them.
In 1947 to 1976 the median growing season was 135 days. That is 7 days more than in 1898 to 1930.
Fitted over all years, the growing season changes by +2.4 days per decade at this station.
Frost dates and growing season at Redfield
Measure
Median, all years
Earliest period (1898 to 1930)
Recent period (1947 to 1976)
Recent against earliest
Fitted trend
Last spring frost
13 May
17 May
12 May
5 days earlier
-1.4 days per decade
First autumn frost
25 September
24 September
26 September
2 days later
+1.0 days per decade
Growing days
134 days
128 days
135 days
7 days more
+2.4 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
69 years, 1898 to 1977
A day with at least 47.3 mm (1.9 in) of rain is expected about once in 2 years. A day with at least 107.0 mm (4.2 in) of rain is expected about once in 100 years.
Rainfall return levels at Redfield: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
47.3 mm (1.9 in)
5 years
62.5 mm (2.5 in)
10 years
72.9 mm (2.9 in)
25 years
86.3 mm (3.4 in)
50 years
96.6 mm (3.8 in)
100 years
107.0 mm (4.2 in)
Longer than the 69 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, 69 years of values from 1898 to 1977.
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: 115.8 mm (4.6 in) in 1900; 101.6 mm (4.0 in) in 1912; 97.0 mm (3.8 in) in 1940.
Station Changes
2 suspected
2 changes were suspected in the annual mean temperature of Redfield, at 1921 and 1948. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1921 ran 0.7 C (1.2 F) higher than in the years before (likely change).
Relative to 5 neighbouring stations, the station's annual mean temperature from 1948 ran 0.3 C (0.6 F) lower than in the years before (likely change).
Suspected changes in the annual mean temperature at Redfield, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1921
+0.7
+1.2
likely
5
1948
-0.3
-0.6
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.
Download the Data
Data for Redfield standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Redfield 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.