Record envelope, standing records and threshold days for Redfield (USC00397052), South Dakota, United States, with 63 years of record.
Key Facts for Redfield
Redfield (USC00397052) is a weather station in South Dakota, United States at 44.87 latitude and -98.53 longitude, 399 m (1,309 ft) above sea level.
The station reports from 1949 to 2011, 63 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 snowfall of 2.5 cm (1.0 in) on 20 April 2011.
About the Station
Location: South Dakota, United States, 44.87 latitude, -98.53 longitude.
Elevation: 399 m (1,309 ft).
Period of record: 1949 to 2011, 63 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
17.2 C (63.0 F)
-38.9 C (-38.0 F)
n/a
n/a
Feb
22.2 C (72.0 F)
-43.9 C (-47.0 F)
n/a
n/a
Mar
28.3 C (82.9 F)
-32.2 C (-26.0 F)
n/a
n/a
Apr
36.7 C (98.1 F)
-22.2 C (-8.0 F)
n/a
n/a
May
38.9 C (102.0 F)
-10.0 C (14.0 F)
n/a
n/a
Jun
43.3 C (109.9 F)
-1.7 C (28.9 F)
n/a
n/a
Jul
45.0 C (113.0 F)
2.2 C (36.0 F)
n/a
n/a
Aug
45.6 C (114.1 F)
-0.6 C (30.9 F)
n/a
n/a
Sep
41.1 C (106.0 F)
-8.9 C (16.0 F)
n/a
n/a
Oct
36.1 C (97.0 F)
-13.9 C (7.0 F)
n/a
n/a
Nov
26.1 C (79.0 F)
-30.0 C (-22.0 F)
n/a
n/a
Dec
18.3 C (64.9 F)
-37.8 C (-36.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Redfield still stand. 1991 holds the most, with 45.
Standing records at Redfield by the year they were set
Year set
Standing records
1949
26
1950
28
1951
29
1952
27
1953
32
1954
17
1955
31
1956
24
1957
14
1958
36
1959
30
1960
19
1961
19
1962
32
1963
28
1964
34
1965
43
1966
30
1967
18
1968
37
1969
20
1970
20
1971
22
1972
23
1973
15
1974
25
1975
18
1976
34
1977
28
1978
22
1979
21
1980
11
1981
28
1982
14
1983
29
1984
14
1985
38
1986
19
1987
37
1988
31
1989
27
1990
26
1991
45
1992
35
1993
17
1994
13
1995
20
1996
31
1997
26
1998
18
1999
15
2000
3
2001
1
2002
6
2003
20
2004
21
2005
23
2006
19
2007
27
2008
12
2009
24
2010
8
2011
4
All-Time Record Progression
8 new records
8 all-time records were set at Redfield between 24 December 1983 and 22 February 2011. Each dot is a new record.
When Redfield set new all-time records
Date
Kind
Detail
1983-12-24
Record low maximum temperature
Record low maximum temperature -26.1 C (-15.0 F)
1989-02-03
Record low maximum temperature
Record low maximum temperature -27.2 C (-17.0 F)
1990-07-19
Record daily precipitation
Record daily precipitation 73.2 mm (2.9 in)
1992-06-17
Record daily precipitation
Record daily precipitation 97.5 mm (3.8 in)
1994-02-09
Record low minimum temperature
Record low minimum temperature -43.9 C (-47.0 F)
2007-05-06
Record daily precipitation
Record daily precipitation 188.0 mm (7.4 in)
2011-02-07
Record snow depth
Record snow depth 78.7 cm (31.0 in)
2011-02-22
Record snow depth
Record snow depth 83.8 cm (33.0 in)
Wettest Day of Each Month
May: 188.0 mm (7.4 in)
The wettest day on record for each calendar month at Redfield. The most was 188.0 mm (7.4 in) on 6 May 2007.
Record daily precipitation for each month at Redfield
Month
Record daily precipitation (mm)
Date
Jan
11.7 mm (0.5 in)
8 January 1992
Feb
44.5 mm (1.8 in)
27 February 1958
Mar
38.4 mm (1.5 in)
12 March 1977
Apr
50.8 mm (2.0 in)
12 April 1970
May
188.0 mm (7.4 in)
6 May 2007
Jun
97.5 mm (3.8 in)
17 June 1992
Jul
96.5 mm (3.8 in)
7 July 1994
Aug
68.1 mm (2.7 in)
20 August 1966
Sep
51.8 mm (2.0 in)
21 September 1989
Oct
57.9 mm (2.3 in)
17 October 1998
Nov
30.7 mm (1.2 in)
28 November 2005
Dec
29.5 mm (1.2 in)
7 December 1951
Period of Record Coverage
1949 to 2011
Complete yearUnder 90 percent of days
63 years of record at Redfield, 1949 to 2011. 11 years have data for under 90 percent of days and are left out of rankings: 1952, 1958, 1959, 1961, 1978, 1990, 1999, 2000 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 46 complete years at Redfield, 1949 to 2010. Blue stripes are years cooler than the station's own mean of 6.8 C (44.2 F); red stripes are warmer. The coolest year was 1950, at 4.8 C (40.7 F), and the warmest was 1987, at 9.2 C (48.5 F). The strongest colour marks a difference of 2.4 C (4.3 F).
Annual mean temperature at Redfield as warming stripes, 1949 to 2010
Year
Annual mean temperature
Difference from the station mean
1949
7.9 C
+1.06 C
1950
4.8 C
-1.99 C
1953
7.8 C
+1.00 C
1954
7.8 C
+0.96 C
1955
6.9 C
+0.09 C
1956
6.5 C
-0.30 C
1957
7.0 C
+0.21 C
1962
6.6 C
-0.21 C
1963
7.9 C
+1.09 C
1964
7.5 C
+0.71 C
1965
6.4 C
-0.41 C
1966
6.3 C
-0.53 C
1967
6.8 C
-0.04 C
1968
7.1 C
+0.25 C
1969
6.4 C
-0.45 C
1970
6.6 C
-0.18 C
1971
6.9 C
+0.06 C
1973
7.3 C
+0.46 C
1974
6.9 C
+0.13 C
1975
6.4 C
-0.38 C
1976
7.2 C
+0.39 C
1977
6.8 C
-0.02 C
1979
4.9 C
-1.92 C
1980
6.6 C
-0.22 C
1981
8.0 C
+1.17 C
1982
5.6 C
-1.21 C
1983
6.9 C
+0.12 C
1984
6.5 C
-0.26 C
1985
5.1 C
-1.73 C
1986
6.7 C
-0.11 C
1987
9.2 C
+2.38 C
1988
7.4 C
+0.58 C
1991
7.5 C
+0.72 C
1992
6.8 C
-0.04 C
1993
5.0 C
-1.85 C
1995
6.1 C
-0.72 C
1997
6.0 C
-0.77 C
1999
7.9 C
+1.14 C
2003
7.2 C
+0.37 C
2004
7.2 C
+0.43 C
2005
7.9 C
+1.14 C
2006
8.3 C
+1.48 C
2007
6.8 C
-0.05 C
2008
5.6 C
-1.16 C
2009
5.6 C
-1.23 C
2010
6.8 C
-0.03 C
The fitted trend in annual mean temperature here over 1949 to 2010 is -0.02 C (-0.18 to 0.14) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.04 F (-0.32 to 0.25) per decade. The slope is a straight line fitted to 46 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
-0.02 C (-0.18 to 0.14) per decade
-0.04 F (-0.32 to 0.25) per decade
1949 to 2010
46
Not clearly different from zero
Mean daily maximum
-0.19 C (-0.39 to 0.02) per decade
-0.34 F (-0.70 to 0.03) per decade
1949 to 2010
46
Not clearly different from zero
Mean daily minimum
0.15 C (0.00 to 0.29) per decade
0.26 F (0.01 to 0.52) per decade
1949 to 2010
46
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 2011
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)
45.6 C (114.1 F)
1965
38.3 C (100.9 F)
63
Coldest night (TNn)
-43.9 C (-47.0 F)
1994
-33.3 C (-27.9 F)
63
Wettest day (Rx1day)
188.0 mm (7.4 in)
2007
44.7 mm (1.8 in)
63
Wettest five days (Rx5day)
210.1 mm (8.3 in)
2007
64.5 mm (2.5 in)
63
Longest dry spell (CDD)
86 days
1974
36 days
63
Hottest day (TXx)
The hottest day of the year at Redfield, 1949 to 2011. The record is 45.6 C (114.1 F) in 1965, marked on the chart; the median year is 38.3 C (100.9 F).
Hottest day (TXx) at Redfield by year
Year
Hottest day (TXx)
1949
38.3 C (100.9 F)
1950
37.2 C (99.0 F)
1951
36.7 C (98.1 F)
1952
38.3 C (100.9 F)
1953
36.7 C (98.1 F)
1954
36.7 C (98.1 F)
1955
40.6 C (105.1 F)
1956
38.9 C (102.0 F)
1957
38.9 C (102.0 F)
1958
39.4 C (102.9 F)
1959
41.7 C (107.1 F)
1960
37.8 C (100.0 F)
1961
37.8 C (100.0 F)
1962
36.1 C (97.0 F)
1963
38.3 C (100.9 F)
1964
40.6 C (105.1 F)
1965
45.6 C (114.1 F)
1966
45.0 C (113.0 F)
1967
37.8 C (100.0 F)
1968
38.9 C (102.0 F)
1969
37.8 C (100.0 F)
1970
40.0 C (104.0 F)
1971
40.0 C (104.0 F)
1972
37.2 C (99.0 F)
1973
41.1 C (106.0 F)
1974
39.4 C (102.9 F)
1975
42.8 C (109.0 F)
1976
41.1 C (106.0 F)
1977
41.7 C (107.1 F)
1978
41.1 C (106.0 F)
1979
38.9 C (102.0 F)
1980
40.6 C (105.1 F)
1981
38.3 C (100.9 F)
1982
38.3 C (100.9 F)
1983
38.9 C (102.0 F)
1984
37.8 C (100.0 F)
1985
40.0 C (104.0 F)
1986
36.7 C (98.1 F)
1987
40.6 C (105.1 F)
1988
43.3 C (109.9 F)
1989
40.0 C (104.0 F)
1990
37.2 C (99.0 F)
1991
40.0 C (104.0 F)
1992
35.6 C (96.1 F)
1993
33.9 C (93.0 F)
1994
33.3 C (91.9 F)
1995
36.7 C (98.1 F)
1996
34.4 C (93.9 F)
1997
35.6 C (96.1 F)
1998
37.2 C (99.0 F)
1999
36.7 C (98.1 F)
2000
21.1 C (70.0 F)
2001
6.1 C (43.0 F)
2002
20.0 C (68.0 F)
2003
42.2 C (108.0 F)
2004
34.4 C (93.9 F)
2005
40.6 C (105.1 F)
2006
44.4 C (111.9 F)
2007
40.0 C (104.0 F)
2008
33.9 C (93.0 F)
2009
37.2 C (99.0 F)
2010
36.7 C (98.1 F)
2011
23.3 C (73.9 F)
Coldest night (TNn)
The coldest night of the year at Redfield, 1949 to 2011. The record is -43.9 C (-47.0 F) in 1994, 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)
1949
-35.6 C (-32.1 F)
1950
-31.7 C (-25.1 F)
1951
-35.6 C (-32.1 F)
1952
-30.6 C (-23.1 F)
1953
-30.0 C (-22.0 F)
1954
-33.9 C (-29.0 F)
1955
-33.9 C (-29.0 F)
1956
-37.2 C (-35.0 F)
1957
-32.8 C (-27.0 F)
1958
-37.8 C (-36.0 F)
1959
-26.1 C (-15.0 F)
1960
-33.9 C (-29.0 F)
1961
-28.9 C (-20.0 F)
1962
-38.3 C (-36.9 F)
1963
-38.3 C (-36.9 F)
1964
-33.9 C (-29.0 F)
1965
-35.0 C (-31.0 F)
1966
-38.3 C (-36.9 F)
1967
-37.2 C (-35.0 F)
1968
-35.6 C (-32.1 F)
1969
-30.6 C (-23.1 F)
1970
-38.9 C (-38.0 F)
1971
-36.1 C (-33.0 F)
1972
-37.8 C (-36.0 F)
1973
-31.7 C (-25.1 F)
1974
-34.4 C (-29.9 F)
1975
-30.0 C (-22.0 F)
1976
-32.8 C (-27.0 F)
1977
-34.4 C (-29.9 F)
1978
-33.9 C (-29.0 F)
1979
-33.3 C (-27.9 F)
1980
-29.4 C (-20.9 F)
1981
-34.4 C (-29.9 F)
1982
-35.0 C (-31.0 F)
1983
-36.7 C (-34.1 F)
1984
-33.9 C (-29.0 F)
1985
-31.7 C (-25.1 F)
1986
-31.1 C (-24.0 F)
1987
-27.2 C (-17.0 F)
1988
-37.2 C (-35.0 F)
1989
-32.8 C (-27.0 F)
1990
-37.8 C (-36.0 F)
1991
-27.2 C (-17.0 F)
1992
-27.8 C (-18.0 F)
1993
-32.2 C (-26.0 F)
1994
-43.9 C (-47.0 F)
1995
-30.0 C (-22.0 F)
1996
-36.1 C (-33.0 F)
1997
-31.7 C (-25.1 F)
1998
-35.6 C (-32.1 F)
1999
-31.1 C (-24.0 F)
2000
-30.6 C (-23.1 F)
2001
-32.8 C (-27.0 F)
2002
-22.8 C (-9.0 F)
2003
-31.1 C (-24.0 F)
2004
-30.0 C (-22.0 F)
2005
-35.6 C (-32.1 F)
2006
-24.4 C (-11.9 F)
2007
-31.7 C (-25.1 F)
2008
-30.6 C (-23.1 F)
2009
-33.9 C (-29.0 F)
2010
-32.2 C (-26.0 F)
2011
-31.1 C (-24.0 F)
Wettest day (Rx1day)
The wettest day of the year at Redfield, 1949 to 2011. The record is 188.0 mm (7.4 in) in 2007, marked on the chart; the median year is 44.7 mm (1.8 in).
Wettest day (Rx1day) at Redfield by year
Year
Wettest day (Rx1day)
1949
39.1 mm (1.5 in)
1950
34.5 mm (1.4 in)
1951
44.7 mm (1.8 in)
1952
71.1 mm (2.8 in)
1953
61.7 mm (2.4 in)
1954
67.8 mm (2.7 in)
1955
27.9 mm (1.1 in)
1956
48.0 mm (1.9 in)
1957
32.5 mm (1.3 in)
1958
44.5 mm (1.8 in)
1959
35.6 mm (1.4 in)
1960
54.1 mm (2.1 in)
1961
50.8 mm (2.0 in)
1962
42.7 mm (1.7 in)
1963
35.3 mm (1.4 in)
1964
49.3 mm (1.9 in)
1965
36.3 mm (1.4 in)
1966
72.9 mm (2.9 in)
1967
60.7 mm (2.4 in)
1968
48.5 mm (1.9 in)
1969
47.8 mm (1.9 in)
1970
50.8 mm (2.0 in)
1971
47.2 mm (1.9 in)
1972
63.0 mm (2.5 in)
1973
33.5 mm (1.3 in)
1974
26.2 mm (1.0 in)
1975
26.7 mm (1.1 in)
1976
47.0 mm (1.9 in)
1977
38.9 mm (1.5 in)
1978
22.4 mm (0.9 in)
1979
37.8 mm (1.5 in)
1980
40.6 mm (1.6 in)
1981
22.1 mm (0.9 in)
1982
43.7 mm (1.7 in)
1983
49.5 mm (1.9 in)
1984
41.9 mm (1.6 in)
1985
72.4 mm (2.9 in)
1986
39.4 mm (1.6 in)
1987
40.1 mm (1.6 in)
1988
57.7 mm (2.3 in)
1989
51.8 mm (2.0 in)
1990
73.2 mm (2.9 in)
1991
65.3 mm (2.6 in)
1992
97.5 mm (3.8 in)
1993
86.9 mm (3.4 in)
1994
96.5 mm (3.8 in)
1995
52.8 mm (2.1 in)
1996
43.2 mm (1.7 in)
1997
50.3 mm (2.0 in)
1998
57.9 mm (2.3 in)
1999
43.2 mm (1.7 in)
2000
25.4 mm (1.0 in)
2001
9.4 mm (0.37 in)
2002
4.1 mm (0.16 in)
2003
42.7 mm (1.7 in)
2004
51.6 mm (2.0 in)
2005
92.2 mm (3.6 in)
2006
37.8 mm (1.5 in)
2007
188.0 mm (7.4 in)
2008
72.1 mm (2.8 in)
2009
38.1 mm (1.5 in)
2010
27.4 mm (1.1 in)
2011
18.3 mm (0.7 in)
Wettest five days (Rx5day)
The wettest five days of the year at Redfield, 1949 to 2011. The record is 210.1 mm (8.3 in) in 2007, marked on the chart; the median year is 64.5 mm (2.5 in).
Wettest five days (Rx5day) at Redfield by year
Year
Wettest five days (Rx5day)
1949
45.7 mm (1.8 in)
1950
57.2 mm (2.3 in)
1951
58.9 mm (2.3 in)
1952
102.6 mm (4.0 in)
1953
136.3 mm (5.4 in)
1954
72.4 mm (2.9 in)
1955
57.1 mm (2.2 in)
1956
70.9 mm (2.8 in)
1957
62.2 mm (2.4 in)
1958
53.6 mm (2.1 in)
1959
43.2 mm (1.7 in)
1960
63.2 mm (2.5 in)
1961
87.6 mm (3.4 in)
1962
76.9 mm (3.0 in)
1963
43.4 mm (1.7 in)
1964
50.6 mm (2.0 in)
1965
63.5 mm (2.5 in)
1966
85.1 mm (3.4 in)
1967
84.8 mm (3.3 in)
1968
109.5 mm (4.3 in)
1969
54.3 mm (2.1 in)
1970
95.0 mm (3.7 in)
1971
50.8 mm (2.0 in)
1972
88.1 mm (3.5 in)
1973
64.0 mm (2.5 in)
1974
46.8 mm (1.8 in)
1975
52.1 mm (2.1 in)
1976
47.0 mm (1.9 in)
1977
80.5 mm (3.2 in)
1978
29.0 mm (1.1 in)
1979
59.4 mm (2.3 in)
1980
71.5 mm (2.8 in)
1981
46.3 mm (1.8 in)
1982
85.7 mm (3.4 in)
1983
58.1 mm (2.3 in)
1984
69.8 mm (2.7 in)
1985
77.2 mm (3.0 in)
1986
74.4 mm (2.9 in)
1987
51.5 mm (2.0 in)
1988
81.3 mm (3.2 in)
1989
54.6 mm (2.1 in)
1990
120.4 mm (4.7 in)
1991
128.5 mm (5.1 in)
1992
125.0 mm (4.9 in)
1993
102.6 mm (4.0 in)
1994
128.5 mm (5.1 in)
1995
79.4 mm (3.1 in)
1996
84.3 mm (3.3 in)
1997
58.4 mm (2.3 in)
1998
104.4 mm (4.1 in)
1999
86.9 mm (3.4 in)
2000
50.8 mm (2.0 in)
2001
50.8 mm (2.0 in)
2002
6.4 mm (0.25 in)
2003
92.2 mm (3.6 in)
2004
55.9 mm (2.2 in)
2005
141.7 mm (5.6 in)
2006
43.1 mm (1.7 in)
2007
210.1 mm (8.3 in)
2008
86.5 mm (3.4 in)
2009
64.5 mm (2.5 in)
2010
51.0 mm (2.0 in)
2011
26.9 mm (1.1 in)
Longest dry spell (CDD)
The longest dry spell of the year at Redfield, 1949 to 2011. The record is 86 days in 1974, marked on the chart; the median year is 36 days.
Longest dry spell (CDD) at Redfield by year
Year
Longest dry spell (CDD)
1949
77 days
1950
32 days
1951
53 days
1952
56 days
1953
25 days
1954
32 days
1955
42 days
1956
41 days
1957
27 days
1958
44 days
1959
24 days
1960
30 days
1961
39 days
1962
38 days
1963
28 days
1964
33 days
1965
45 days
1966
35 days
1967
33 days
1968
66 days
1969
19 days
1970
32 days
1971
35 days
1972
53 days
1973
33 days
1974
86 days
1975
40 days
1976
39 days
1977
39 days
1978
37 days
1979
35 days
1980
30 days
1981
41 days
1982
51 days
1983
34 days
1984
28 days
1985
50 days
1986
53 days
1987
44 days
1988
33 days
1989
36 days
1990
45 days
1991
48 days
1992
44 days
1993
46 days
1994
26 days
1995
18 days
1996
22 days
1997
30 days
1998
47 days
1999
73 days
2000
18 days
2001
20 days
2002
46 days
2003
27 days
2004
37 days
2005
31 days
2006
34 days
2007
40 days
2008
27 days
2009
39 days
2010
28 days
2011
19 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
46 years with a frost
Across 46 years with a frost, the median last spring frost at Redfield falls on 16 May and the median first autumn frost on 23 September, which leaves a median of 132 days between them.
Fitted over all years, the growing season changes by +5.5 days per decade at this station.
Frost dates and growing season at Redfield
Measure
Median, all years
Earliest period
Recent period (1971 to 2010)
Recent against earliest
Fitted trend
Last spring frost
16 May
n/a
15 May
n/a
-1.8 days per decade
First autumn frost
23 September
n/a
25 September
n/a
+3.8 days per decade
Growing days
132 days
n/a
137 days
n/a
+5.5 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
51 years, 1949 to 2009
A day with at least 46.9 mm (1.8 in) of rain is expected about once in 2 years. A day with at least 154.5 mm (6.1 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
46.9 mm (1.8 in)
5 years
65.1 mm (2.6 in)
10 years
80.5 mm (3.2 in)
25 years
104.9 mm (4.1 in)
50 years
127.5 mm (5.0 in)
100 years
154.5 mm (6.1 in)
Longer than the 51 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, 51 years of values from 1949 to 2009.
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: 188.0 mm (7.4 in) in 2007; 97.5 mm (3.8 in) in 1992; 96.5 mm (3.8 in) in 1994.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.