Record envelope, standing records and threshold days for Wilburton 9 ENE (USC00349634), Oklahoma, United States, with 84 years of record.
Key Facts for Wilburton 9 ENE
Wilburton 9 ENE (USC00349634) is a weather station in Oklahoma, United States at 34.96 latitude and -95.17 longitude, 194 m (635 ft) above sea level.
The station reports from 1921 to 2004, 84 years of record.
1,464 records set at Wilburton 9 ENE still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Wilburton 9 ENE set a daily record precipitation of 45.7 mm (1.8 in) on 29 November 2004.
About the Station
Location: Oklahoma, United States, 34.96 latitude, -95.17 longitude.
Elevation: 194 m (635 ft).
Period of record: 1921 to 2004, 84 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 Wilburton 9 ENE. 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 Wilburton 9 ENE, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
28.3 C (82.9 F)
-24.4 C (-11.9 F)
n/a
n/a
Feb
32.2 C (90.0 F)
-26.7 C (-16.1 F)
n/a
n/a
Mar
33.9 C (93.0 F)
-15.6 C (3.9 F)
n/a
n/a
Apr
33.3 C (91.9 F)
-3.9 C (25.0 F)
n/a
n/a
May
36.1 C (97.0 F)
0.0 C (32.0 F)
n/a
n/a
Jun
42.2 C (108.0 F)
5.6 C (42.1 F)
n/a
n/a
Jul
43.9 C (111.0 F)
8.9 C (48.0 F)
n/a
n/a
Aug
43.9 C (111.0 F)
8.9 C (48.0 F)
n/a
n/a
Sep
45.0 C (113.0 F)
0.0 C (32.0 F)
n/a
n/a
Oct
38.3 C (100.9 F)
-7.2 C (19.0 F)
n/a
n/a
Nov
31.1 C (88.0 F)
-14.4 C (6.1 F)
n/a
n/a
Dec
27.2 C (81.0 F)
-23.3 C (-9.9 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Wilburton 9 ENE still stand. 1954 holds the most, with 52.
Standing records at Wilburton 9 ENE by the year they were set
Year set
Standing records
1921
29
1922
10
1923
15
1924
6
1925
42
1926
1
1927
27
1928
2
1938
17
1939
33
1940
18
1941
1
1942
14
1943
30
1944
42
1945
27
1946
14
1947
15
1948
36
1949
15
1950
35
1951
30
1952
33
1953
43
1954
52
1955
31
1956
38
1957
18
1958
13
1959
18
1960
19
1961
24
1962
20
1963
38
1964
25
1965
24
1966
23
1967
18
1968
15
1969
8
1970
29
1971
13
1972
23
1973
11
1974
33
1975
16
1976
31
1977
7
1978
22
1979
22
1980
10
1981
11
1982
8
1983
5
1985
19
1986
15
1989
21
1990
13
1991
17
1992
29
1993
20
1994
5
1995
18
1996
22
1997
15
1998
23
1999
10
2000
20
2001
11
2002
13
2003
11
2004
22
All-Time Record Progression
2 new records
2 all-time records were set at Wilburton 9 ENE between 15 August 1964 and 4 September 1998. Each dot is a new record.
When Wilburton 9 ENE set new all-time records
Date
Kind
Detail
1964-08-15
Record daily precipitation
Record daily precipitation 195.6 mm (7.7 in)
1998-09-04
Record high maximum temperature
Record high maximum temperature 45.0 C (113.0 F)
Wettest Day of Each Month
Aug: 195.6 mm (7.7 in)
The wettest day on record for each calendar month at Wilburton 9 ENE. The most was 195.6 mm (7.7 in) on 15 August 1964.
Record daily precipitation for each month at Wilburton 9 ENE
Month
Record daily precipitation (mm)
Date
Jan
111.3 mm (4.4 in)
4 January 1998
Feb
135.6 mm (5.3 in)
9 February 1966
Mar
102.9 mm (4.1 in)
27 March 1977
Apr
127.0 mm (5.0 in)
7 April 2002
May
182.6 mm (7.2 in)
19 May 1960
Jun
90.2 mm (3.6 in)
8 June 1925
Jul
127.5 mm (5.0 in)
4 July 1972
Aug
195.6 mm (7.7 in)
15 August 1964
Sep
153.7 mm (6.1 in)
16 September 1950
Oct
163.8 mm (6.4 in)
17 October 1971
Nov
132.1 mm (5.2 in)
15 November 1985
Dec
148.6 mm (5.9 in)
13 December 1927
Period of Record Coverage
1921 to 2004
Complete yearUnder 90 percent of days
73 years of record at Wilburton 9 ENE, 1921 to 2004. 27 years have data for under 90 percent of days and are left out of rankings: 1921, 1922, 1923, 1924, 1925, 1926, 1927, 1928 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 39 complete years at Wilburton 9 ENE, 1939 to 2003. Blue stripes are years cooler than the station's own mean of 16.5 C (61.8 F); red stripes are warmer. The coolest year was 1966, at 15.4 C (59.7 F), and the warmest was 1954, at 18.2 C (64.7 F). The strongest colour marks a difference of 1.7 C (3.1 F).
Annual mean temperature at Wilburton 9 ENE as warming stripes, 1939 to 2003
Year
Annual mean temperature
Difference from the station mean
1939
17.9 C
+1.37 C
1944
17.0 C
+0.45 C
1946
17.4 C
+0.85 C
1949
16.4 C
-0.19 C
1950
16.3 C
-0.20 C
1953
17.1 C
+0.59 C
1954
18.2 C
+1.61 C
1955
17.0 C
+0.43 C
1956
17.5 C
+0.99 C
1957
16.7 C
+0.15 C
1959
16.3 C
-0.26 C
1960
16.1 C
-0.46 C
1961
16.0 C
-0.59 C
1962
16.8 C
+0.22 C
1963
17.4 C
+0.87 C
1964
16.9 C
+0.38 C
1965
16.9 C
+0.32 C
1966
15.4 C
-1.15 C
1968
15.8 C
-0.73 C
1969
16.2 C
-0.37 C
1970
15.7 C
-0.82 C
1971
15.9 C
-0.64 C
1972
16.1 C
-0.46 C
1973
15.8 C
-0.72 C
1974
16.1 C
-0.41 C
1986
16.6 C
+0.06 C
1990
17.1 C
+0.58 C
1991
16.7 C
+0.15 C
1992
16.0 C
-0.50 C
1993
15.7 C
-0.80 C
1994
16.4 C
-0.18 C
1995
16.3 C
-0.22 C
1996
15.8 C
-0.74 C
1997
15.9 C
-0.61 C
1998
17.8 C
+1.24 C
1999
17.3 C
+0.72 C
2000
16.4 C
-0.11 C
2002
16.1 C
-0.47 C
2003
16.4 C
-0.16 C
The fitted trend in annual mean temperature here over 1939 to 2003 is -0.11 C (-0.22 to 0.00) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.20 F (-0.40 to 0.01) per decade. The slope is a straight line fitted to 39 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Wilburton 9 ENE
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.11 C (-0.22 to 0.00) per decade
-0.20 F (-0.40 to 0.01) per decade
1939 to 2003
39
Not clearly different from zero
Mean daily maximum
-0.2 C (-0.4 to -0.1) per decade
-0.4 F (-0.7 to -0.1) per decade
1939 to 2003
39
Fall
Mean daily minimum
-0.01 C (-0.12 to 0.11) per decade
-0.01 F (-0.22 to 0.19) per decade
1939 to 2003
39
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
1921 to 2004
Yearly extremes at Wilburton 9 ENE: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
45.0 C (113.0 F)
1998
40.0 C (104.0 F)
73
Coldest night (TNn)
-26.7 C (-16.1 F)
1951
-13.9 C (7.0 F)
73
Wettest day (Rx1day)
195.6 mm (7.7 in)
1964
75.4 mm (3.0 in)
73
Wettest five days (Rx5day)
299.7 mm (11.8 in)
1973
118.1 mm (4.6 in)
73
Longest dry spell (CDD)
42 days
1955
22 days
73
Hottest day (TXx)
The hottest day of the year at Wilburton 9 ENE, 1921 to 2004. The record is 45.0 C (113.0 F) in 1998, marked on the chart; the median year is 40.0 C (104.0 F).
Hottest day (TXx) at Wilburton 9 ENE by year
Year
Hottest day (TXx)
1921
40.0 C (104.0 F)
1922
36.7 C (98.1 F)
1923
37.8 C (100.0 F)
1924
23.9 C (75.0 F)
1925
40.6 C (105.1 F)
1926
28.9 C (84.0 F)
1927
37.2 C (99.0 F)
1928
28.3 C (82.9 F)
1938
41.7 C (107.1 F)
1939
43.3 C (109.9 F)
1940
37.2 C (99.0 F)
1941
35.6 C (96.1 F)
1942
36.7 C (98.1 F)
1943
43.3 C (109.9 F)
1944
41.1 C (106.0 F)
1945
38.9 C (102.0 F)
1946
40.6 C (105.1 F)
1947
42.8 C (109.0 F)
1948
40.0 C (104.0 F)
1949
37.2 C (99.0 F)
1950
34.4 C (93.9 F)
1951
40.6 C (105.1 F)
1952
41.7 C (107.1 F)
1953
42.2 C (108.0 F)
1954
43.9 C (111.0 F)
1955
40.0 C (104.0 F)
1956
43.3 C (109.9 F)
1957
38.9 C (102.0 F)
1958
35.6 C (96.1 F)
1959
37.2 C (99.0 F)
1960
40.6 C (105.1 F)
1961
37.2 C (99.0 F)
1962
41.7 C (107.1 F)
1963
43.3 C (109.9 F)
1964
43.3 C (109.9 F)
1965
40.0 C (104.0 F)
1966
41.1 C (106.0 F)
1967
40.0 C (104.0 F)
1968
38.3 C (100.9 F)
1969
40.6 C (105.1 F)
1970
41.7 C (107.1 F)
1971
38.9 C (102.0 F)
1972
40.6 C (105.1 F)
1973
36.1 C (97.0 F)
1974
41.1 C (106.0 F)
1975
37.8 C (100.0 F)
1976
40.6 C (105.1 F)
1977
38.9 C (102.0 F)
1978
40.6 C (105.1 F)
1979
35.6 C (96.1 F)
1980
43.3 C (109.9 F)
1981
38.9 C (102.0 F)
1982
39.4 C (102.9 F)
1983
38.9 C (102.0 F)
1985
40.6 C (105.1 F)
1986
43.9 C (111.0 F)
1987
17.8 C (64.0 F)
1989
40.6 C (105.1 F)
1990
40.0 C (104.0 F)
1991
38.9 C (102.0 F)
1992
35.0 C (95.0 F)
1993
42.2 C (108.0 F)
1994
38.3 C (100.9 F)
1995
40.6 C (105.1 F)
1996
37.8 C (100.0 F)
1997
41.1 C (106.0 F)
1998
45.0 C (113.0 F)
1999
42.8 C (109.0 F)
2000
43.3 C (109.9 F)
2001
41.1 C (106.0 F)
2002
37.8 C (100.0 F)
2003
40.0 C (104.0 F)
2004
36.1 C (97.0 F)
Coldest night (TNn)
The coldest night of the year at Wilburton 9 ENE, 1921 to 2004. The record is -26.7 C (-16.1 F) in 1951, marked on the chart; the median year is -13.9 C (7.0 F).
Coldest night (TNn) at Wilburton 9 ENE by year
Year
Coldest night (TNn)
1921
-14.4 C (6.1 F)
1922
-9.4 C (15.1 F)
1923
-11.7 C (10.9 F)
1924
-15.0 C (5.0 F)
1925
-15.0 C (5.0 F)
1926
-13.9 C (7.0 F)
1927
-13.9 C (7.0 F)
1928
-6.7 C (19.9 F)
1938
-9.4 C (15.1 F)
1939
-11.7 C (10.9 F)
1940
-18.9 C (-2.0 F)
1941
-7.2 C (19.0 F)
1942
-20.0 C (-4.0 F)
1943
-17.8 C (0.0 F)
1944
-24.4 C (-11.9 F)
1945
-13.3 C (8.1 F)
1946
-11.1 C (12.0 F)
1947
-17.2 C (1.0 F)
1948
-15.0 C (5.0 F)
1949
-17.8 C (0.0 F)
1950
-17.8 C (0.0 F)
1951
-26.7 C (-16.1 F)
1952
-10.6 C (12.9 F)
1953
-13.3 C (8.1 F)
1954
-16.7 C (1.9 F)
1955
-13.3 C (8.1 F)
1956
-9.4 C (15.1 F)
1957
-13.9 C (7.0 F)
1958
-17.2 C (1.0 F)
1959
-16.7 C (1.9 F)
1960
-11.1 C (12.0 F)
1961
-13.9 C (7.0 F)
1962
-22.8 C (-9.0 F)
1963
-18.3 C (-0.9 F)
1964
-17.8 C (0.0 F)
1965
-11.7 C (10.9 F)
1966
-21.1 C (-6.0 F)
1967
-11.1 C (12.0 F)
1968
-17.2 C (1.0 F)
1969
-12.2 C (10.0 F)
1970
-20.6 C (-5.1 F)
1971
-16.7 C (1.9 F)
1972
-16.7 C (1.9 F)
1973
-17.8 C (0.0 F)
1974
-12.8 C (9.0 F)
1975
-13.9 C (7.0 F)
1976
-16.7 C (1.9 F)
1977
-22.2 C (-8.0 F)
1978
-11.7 C (10.9 F)
1979
-19.4 C (-2.9 F)
1980
-13.3 C (8.1 F)
1981
-18.9 C (-2.0 F)
1982
-19.4 C (-2.9 F)
1983
5.0 C (41.0 F)
1985
-15.0 C (5.0 F)
1986
-13.3 C (8.1 F)
1987
-7.8 C (18.0 F)
1989
-23.3 C (-9.9 F)
1990
-14.4 C (6.1 F)
1991
-10.0 C (14.0 F)
1992
-13.9 C (7.0 F)
1993
-12.2 C (10.0 F)
1994
-12.2 C (10.0 F)
1995
-13.3 C (8.1 F)
1996
-18.9 C (-2.0 F)
1997
-14.4 C (6.1 F)
1998
-11.1 C (12.0 F)
1999
-12.2 C (10.0 F)
2000
-12.2 C (10.0 F)
2001
-16.1 C (3.0 F)
2002
-15.0 C (5.0 F)
2003
-12.8 C (9.0 F)
2004
-11.7 C (10.9 F)
Wettest day (Rx1day)
The wettest day of the year at Wilburton 9 ENE, 1921 to 2004. The record is 195.6 mm (7.7 in) in 1964, marked on the chart; the median year is 75.4 mm (3.0 in).
Wettest day (Rx1day) at Wilburton 9 ENE by year
Year
Wettest day (Rx1day)
1921
67.1 mm (2.6 in)
1922
70.1 mm (2.8 in)
1923
65.8 mm (2.6 in)
1924
22.9 mm (0.9 in)
1925
90.2 mm (3.6 in)
1926
30.5 mm (1.2 in)
1927
148.6 mm (5.9 in)
1928
82.6 mm (3.3 in)
1938
75.7 mm (3.0 in)
1939
66.5 mm (2.6 in)
1940
68.3 mm (2.7 in)
1941
45.7 mm (1.8 in)
1942
53.8 mm (2.1 in)
1943
119.9 mm (4.7 in)
1944
61.5 mm (2.4 in)
1945
112.8 mm (4.4 in)
1946
90.9 mm (3.6 in)
1947
66.0 mm (2.6 in)
1948
69.3 mm (2.7 in)
1949
72.1 mm (2.8 in)
1950
153.7 mm (6.1 in)
1951
65.0 mm (2.6 in)
1952
75.4 mm (3.0 in)
1953
117.9 mm (4.6 in)
1954
67.3 mm (2.6 in)
1955
61.0 mm (2.4 in)
1956
53.1 mm (2.1 in)
1957
90.2 mm (3.6 in)
1958
61.0 mm (2.4 in)
1959
74.2 mm (2.9 in)
1960
182.6 mm (7.2 in)
1961
88.4 mm (3.5 in)
1962
72.6 mm (2.9 in)
1963
59.9 mm (2.4 in)
1964
195.6 mm (7.7 in)
1965
109.2 mm (4.3 in)
1966
135.6 mm (5.3 in)
1967
70.9 mm (2.8 in)
1968
70.9 mm (2.8 in)
1969
94.5 mm (3.7 in)
1970
103.6 mm (4.1 in)
1971
163.8 mm (6.4 in)
1972
127.5 mm (5.0 in)
1973
126.2 mm (5.0 in)
1974
79.5 mm (3.1 in)
1975
63.5 mm (2.5 in)
1976
71.4 mm (2.8 in)
1977
102.9 mm (4.1 in)
1978
84.8 mm (3.3 in)
1979
85.1 mm (3.4 in)
1980
78.7 mm (3.1 in)
1981
61.7 mm (2.4 in)
1982
58.4 mm (2.3 in)
1983
50.8 mm (2.0 in)
1985
132.1 mm (5.2 in)
1986
100.3 mm (3.9 in)
1987
38.4 mm (1.5 in)
1989
30.5 mm (1.2 in)
1990
139.7 mm (5.5 in)
1991
95.3 mm (3.8 in)
1992
101.6 mm (4.0 in)
1993
66.8 mm (2.6 in)
1994
103.4 mm (4.1 in)
1995
88.9 mm (3.5 in)
1996
91.9 mm (3.6 in)
1997
61.5 mm (2.4 in)
1998
128.5 mm (5.1 in)
1999
74.9 mm (2.9 in)
2000
68.1 mm (2.7 in)
2001
96.5 mm (3.8 in)
2002
127.0 mm (5.0 in)
2003
69.3 mm (2.7 in)
2004
51.8 mm (2.0 in)
Wettest five days (Rx5day)
The wettest five days of the year at Wilburton 9 ENE, 1921 to 2004. The record is 299.7 mm (11.8 in) in 1973, marked on the chart; the median year is 118.1 mm (4.6 in).
Wettest five days (Rx5day) at Wilburton 9 ENE by year
Year
Wettest five days (Rx5day)
1921
126.3 mm (5.0 in)
1922
118.1 mm (4.6 in)
1923
141.0 mm (5.6 in)
1924
32.2 mm (1.3 in)
1925
94.3 mm (3.7 in)
1926
57.7 mm (2.3 in)
1927
167.9 mm (6.6 in)
1928
108.0 mm (4.3 in)
1938
110.8 mm (4.4 in)
1939
100.8 mm (4.0 in)
1940
104.2 mm (4.1 in)
1941
68.7 mm (2.7 in)
1942
76.7 mm (3.0 in)
1943
197.4 mm (7.8 in)
1944
97.0 mm (3.8 in)
1945
184.7 mm (7.3 in)
1946
206.0 mm (8.1 in)
1947
134.5 mm (5.3 in)
1948
92.4 mm (3.6 in)
1949
112.1 mm (4.4 in)
1950
216.7 mm (8.5 in)
1951
123.8 mm (4.9 in)
1952
111.8 mm (4.4 in)
1953
164.9 mm (6.5 in)
1954
95.5 mm (3.8 in)
1955
104.4 mm (4.1 in)
1956
77.2 mm (3.0 in)
1957
144.0 mm (5.7 in)
1958
104.6 mm (4.1 in)
1959
159.7 mm (6.3 in)
1960
267.5 mm (10.5 in)
1961
130.8 mm (5.1 in)
1962
108.5 mm (4.3 in)
1963
87.1 mm (3.4 in)
1964
200.9 mm (7.9 in)
1965
115.8 mm (4.6 in)
1966
227.8 mm (9.0 in)
1967
114.8 mm (4.5 in)
1968
138.6 mm (5.5 in)
1969
148.1 mm (5.8 in)
1970
115.6 mm (4.6 in)
1971
260.9 mm (10.3 in)
1972
175.7 mm (6.9 in)
1973
299.7 mm (11.8 in)
1974
113.0 mm (4.4 in)
1975
110.5 mm (4.4 in)
1976
125.3 mm (4.9 in)
1977
133.4 mm (5.3 in)
1978
122.3 mm (4.8 in)
1979
135.4 mm (5.3 in)
1980
101.6 mm (4.0 in)
1981
83.0 mm (3.3 in)
1982
122.2 mm (4.8 in)
1983
106.7 mm (4.2 in)
1985
293.4 mm (11.6 in)
1986
145.5 mm (5.7 in)
1987
44.8 mm (1.8 in)
1989
87.1 mm (3.4 in)
1990
231.1 mm (9.1 in)
1991
199.0 mm (7.8 in)
1992
134.4 mm (5.3 in)
1993
112.5 mm (4.4 in)
1994
207.3 mm (8.2 in)
1995
114.3 mm (4.5 in)
1996
127.0 mm (5.0 in)
1997
105.4 mm (4.1 in)
1998
233.0 mm (9.2 in)
1999
92.5 mm (3.6 in)
2000
105.5 mm (4.2 in)
2001
129.5 mm (5.1 in)
2002
157.5 mm (6.2 in)
2003
77.7 mm (3.1 in)
2004
96.3 mm (3.8 in)
Longest dry spell (CDD)
The longest dry spell of the year at Wilburton 9 ENE, 1921 to 2004. The record is 42 days in 1955, marked on the chart; the median year is 22 days.
Longest dry spell (CDD) at Wilburton 9 ENE by year
Year
Longest dry spell (CDD)
1921
25 days
1922
15 days
1923
21 days
1924
13 days
1925
26 days
1926
18 days
1927
15 days
1928
16 days
1938
36 days
1939
23 days
1940
18 days
1941
15 days
1942
22 days
1943
34 days
1944
30 days
1945
15 days
1946
25 days
1947
18 days
1948
33 days
1949
26 days
1950
35 days
1951
16 days
1952
17 days
1953
19 days
1954
24 days
1955
42 days
1956
26 days
1957
18 days
1958
16 days
1959
28 days
1960
22 days
1961
17 days
1962
23 days
1963
34 days
1964
29 days
1965
26 days
1966
19 days
1967
21 days
1968
19 days
1969
27 days
1970
25 days
1971
21 days
1972
29 days
1973
19 days
1974
25 days
1975
23 days
1976
20 days
1977
14 days
1978
30 days
1979
25 days
1980
35 days
1981
20 days
1982
18 days
1983
14 days
1985
29 days
1986
33 days
1987
13 days
1989
38 days
1990
18 days
1991
20 days
1992
18 days
1993
36 days
1994
20 days
1995
25 days
1996
34 days
1997
14 days
1998
33 days
1999
21 days
2000
25 days
2001
19 days
2002
20 days
2003
21 days
2004
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
39 years with a frost
Across 39 years with a frost, the median last spring frost at Wilburton 9 ENE falls on 7 April and the median first autumn frost on 28 October, which leaves a median of 203 days between them.
Fitted over all years, the growing season changes by +0.5 days per decade at this station.
Frost dates and growing season at Wilburton 9 ENE
Measure
Median, all years
Earliest period
Recent period (1957 to 2003)
Recent against earliest
Fitted trend
Last spring frost
7 April
n/a
7 April
n/a
0.0 days per decade
First autumn frost
28 October
n/a
26 October
n/a
+0.5 days per decade
Growing days
203 days
n/a
199 days
n/a
+0.5 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
46 years, 1921 to 2004
A day with at least 86.1 mm (3.4 in) of rain is expected about once in 2 years. A day with at least 229.1 mm (9.0 in) of rain is expected about once in 100 years.
Rainfall return levels at Wilburton 9 ENE: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
86.1 mm (3.4 in)
5 years
116.1 mm (4.6 in)
10 years
138.9 mm (5.5 in)
25 years
171.6 mm (6.8 in)
50 years
199.0 mm (7.8 in)
Longer than the 46 years of record
100 years
229.1 mm (9.0 in)
Longer than the 46 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, 46 years of values from 1921 to 2004.
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: 195.6 mm (7.7 in) in 1964; 182.6 mm (7.2 in) in 1960; 163.8 mm (6.4 in) in 1971.
Download the Data
Data for Wilburton 9 ENE standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Wilburton 9 ENE 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.