Record envelope, standing records and threshold days for Okemah (USC00346638), Oklahoma, United States, with 101 years of record.
Key Facts for Okemah
Okemah (USC00346638) is a weather station in Oklahoma, United States at 35.43 latitude and -96.30 longitude, 285 m (935 ft) above sea level.
The station reports from 1912 to 2012, 101 years of record.
1,464 records set at Okemah still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Okemah set a daily record precipitation of 99.1 mm (3.9 in) on 27 September 2012.
About the Station
Location: Oklahoma, United States, 35.43 latitude, -96.30 longitude.
Elevation: 285 m (935 ft).
Period of record: 1912 to 2012, 101 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 Okemah. 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 Okemah, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
27.8 C (82.0 F)
-23.3 C (-9.9 F)
n/a
n/a
Feb
33.9 C (93.0 F)
-21.1 C (-6.0 F)
n/a
n/a
Mar
34.4 C (93.9 F)
-18.9 C (-2.0 F)
n/a
n/a
Apr
37.2 C (99.0 F)
-6.1 C (21.0 F)
n/a
n/a
May
36.1 C (97.0 F)
1.7 C (35.1 F)
n/a
n/a
Jun
42.2 C (108.0 F)
7.2 C (45.0 F)
n/a
n/a
Jul
45.6 C (114.1 F)
11.7 C (53.1 F)
n/a
n/a
Aug
46.1 C (115.0 F)
9.4 C (48.9 F)
n/a
n/a
Sep
43.9 C (111.0 F)
1.1 C (34.0 F)
n/a
n/a
Oct
36.7 C (98.1 F)
-8.3 C (17.1 F)
n/a
n/a
Nov
31.1 C (88.0 F)
-11.7 C (10.9 F)
n/a
n/a
Dec
28.3 C (82.9 F)
-22.8 C (-9.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Okemah still stand. 2011 holds the most, with 42.
Standing records at Okemah by the year they were set
Year set
Standing records
1912
11
1913
26
1914
11
1915
21
1916
12
1917
39
1918
22
1919
9
1920
12
1921
16
1922
5
1923
14
1924
20
1925
33
1926
12
1927
20
1928
11
1929
17
1930
13
1931
21
1932
14
1933
13
1934
16
1935
14
1936
39
1937
15
1938
12
1939
21
1940
25
1941
4
1942
7
1943
29
1944
8
1945
14
1946
13
1947
13
1948
20
1949
10
1950
21
1951
32
1952
16
1953
25
1954
23
1955
15
1956
23
1957
11
1958
9
1959
8
1960
14
1961
14
1962
11
1963
22
1964
12
1965
17
1966
18
1967
22
1968
8
1969
2
1970
10
1971
9
1972
12
1973
5
1974
18
1975
7
1976
16
1977
3
1978
8
1979
11
1980
13
1981
10
1982
12
1983
23
1984
6
1985
14
1986
13
1987
7
1988
6
1989
25
1990
8
1991
13
1992
11
1993
9
1994
8
1995
14
1996
16
1997
9
1998
31
1999
10
2000
11
2001
9
2002
3
2003
8
2004
14
2005
6
2006
16
2007
3
2008
10
2009
10
2010
7
2011
42
2012
13
All-Time Record Progression
8 new records
8 all-time records were set at Okemah between 14 April 1945 and 3 August 2011. Each dot is a new record.
When Okemah set new all-time records
Date
Kind
Detail
1945-04-14
Record daily precipitation
Record daily precipitation 255.3 mm (10.1 in)
1968-03-12
Record daily snowfall
Record daily snowfall 25.4 cm (10.0 in)
1983-12-22
Record low maximum temperature
Record low maximum temperature -12.8 C (9.0 F)
1983-12-24
Record low maximum temperature
Record low maximum temperature -13.3 C (8.1 F)
1988-01-07
Record snow depth
Record snow depth 30.5 cm (12.0 in)
1989-03-06
Record daily snowfall
Record daily snowfall 26.7 cm (10.5 in)
1989-12-22
Record low maximum temperature
Record low maximum temperature -14.4 C (6.1 F)
2011-08-03
Record high minimum temperature
Record high minimum temperature 28.9 C (84.0 F)
Wettest Day of Each Month
Apr: 255.3 mm (10.1 in)
The wettest day on record for each calendar month at Okemah. The most was 255.3 mm (10.1 in) on 14 April 1945.
Record daily precipitation for each month at Okemah
Month
Record daily precipitation (mm)
Date
Jan
135.6 mm (5.3 in)
31 January 1923
Feb
106.9 mm (4.2 in)
1 February 1983
Mar
94.7 mm (3.7 in)
20 March 2012
Apr
255.3 mm (10.1 in)
14 April 1945
May
139.7 mm (5.5 in)
18 May 1949
Jun
171.7 mm (6.8 in)
23 June 1948
Jul
156.0 mm (6.1 in)
28 July 1988
Aug
162.6 mm (6.4 in)
20 August 2007
Sep
169.7 mm (6.7 in)
14 September 1993
Oct
167.6 mm (6.6 in)
30 October 1941
Nov
109.2 mm (4.3 in)
21 November 1979
Dec
149.9 mm (5.9 in)
23 December 1932
Period of Record Coverage
1912 to 2012
Complete yearUnder 90 percent of days
101 years of record at Okemah, 1912 to 2012. 6 years have data for under 90 percent of days and are left out of rankings: 1912, 1938, 1947, 1982, 1983, 2012.
Cooler than the station meanWarmer than the station mean
One stripe for each of 90 complete years at Okemah, 1913 to 2011. Blue stripes are years cooler than the station's own mean of 16.4 C (61.5 F); red stripes are warmer. The coolest year was 1940, at 14.3 C (57.8 F), and the warmest was 2011, at 18.9 C (66.1 F). The strongest colour marks a difference of 2.6 C (4.7 F).
Annual mean temperature at Okemah as warming stripes, 1913 to 2011
Year
Annual mean temperature
Difference from the station mean
1913
16.2 C
-0.20 C
1914
16.0 C
-0.39 C
1915
15.3 C
-1.07 C
1916
15.7 C
-0.62 C
1917
14.6 C
-1.73 C
1918
16.6 C
+0.19 C
1920
15.9 C
-0.48 C
1921
17.8 C
+1.43 C
1922
16.8 C
+0.44 C
1923
16.3 C
-0.07 C
1924
15.8 C
-0.58 C
1925
17.0 C
+0.64 C
1926
16.1 C
-0.30 C
1927
16.7 C
+0.33 C
1928
16.5 C
+0.13 C
1929
15.7 C
-0.67 C
1930
16.5 C
+0.14 C
1931
17.3 C
+0.90 C
1932
16.2 C
-0.19 C
1933
17.1 C
+0.69 C
1934
17.2 C
+0.82 C
1935
15.7 C
-0.65 C
1936
16.8 C
+0.45 C
1937
15.2 C
-1.17 C
1939
16.9 C
+0.57 C
1940
14.3 C
-2.05 C
1941
16.0 C
-0.39 C
1942
16.1 C
-0.27 C
1943
16.5 C
+0.11 C
1944
16.6 C
+0.21 C
1945
16.0 C
-0.37 C
1946
17.4 C
+1.05 C
1948
16.2 C
-0.16 C
1949
16.2 C
-0.21 C
1950
15.7 C
-0.66 C
1951
16.2 C
-0.19 C
1952
16.8 C
+0.41 C
1953
17.0 C
+0.65 C
1954
18.1 C
+1.74 C
1955
16.7 C
+0.34 C
1956
17.5 C
+1.12 C
1957
15.9 C
-0.45 C
1958
15.5 C
-0.86 C
1959
15.7 C
-0.64 C
1960
15.5 C
-0.85 C
1961
15.3 C
-1.05 C
1962
16.2 C
-0.18 C
1963
16.7 C
+0.38 C
1964
16.0 C
-0.34 C
1965
16.4 C
0.00 C
1966
15.9 C
-0.48 C
1967
16.2 C
-0.20 C
1968
15.4 C
-0.96 C
1969
16.0 C
-0.32 C
1970
15.9 C
-0.44 C
1971
16.0 C
-0.35 C
1972
15.9 C
-0.44 C
1974
16.2 C
-0.13 C
1975
15.8 C
-0.53 C
1976
15.7 C
-0.64 C
1977
16.8 C
+0.46 C
1978
15.7 C
-0.69 C
1979
15.0 C
-1.37 C
1980
16.9 C
+0.57 C
1981
16.5 C
+0.14 C
1982
15.9 C
-0.48 C
1983
15.2 C
-1.13 C
1984
16.4 C
+0.02 C
1985
16.0 C
-0.36 C
1986
16.6 C
+0.26 C
1987
15.9 C
-0.43 C
1988
15.9 C
-0.49 C
1989
15.5 C
-0.86 C
1990
17.1 C
+0.75 C
1991
16.9 C
+0.54 C
1992
16.4 C
0.00 C
1993
15.7 C
-0.64 C
1994
16.9 C
+0.53 C
1995
17.6 C
+1.21 C
1996
16.8 C
+0.41 C
1997
17.2 C
+0.83 C
1998
18.5 C
+2.17 C
1999
18.1 C
+1.75 C
2001
17.0 C
+0.60 C
2002
16.2 C
-0.18 C
2005
16.9 C
+0.50 C
2006
17.8 C
+1.40 C
2007
16.5 C
+0.15 C
2009
16.9 C
+0.53 C
2011
18.9 C
+2.57 C
The annual mean temperature here has risen by 0.07 C (0.02 to 0.13) per decade over 1913 to 2011. In Fahrenheit: 0.13 F (0.03 to 0.24) per decade. The slope is a straight line fitted to 90 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Okemah
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.07 C (0.02 to 0.13) per decade
0.13 F (0.03 to 0.24) per decade
1913 to 2011
90
Rise
Mean daily maximum
0.03 C (-0.04 to 0.10) per decade
0.1 F (-0.1 to 0.2) per decade
1913 to 2011
90
Not clearly different from zero
Mean daily minimum
0.1 C (0.1 to 0.2) per decade
0.2 F (0.1 to 0.3) per decade
1913 to 2011
90
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
1912 to 2012
Yearly extremes at Okemah: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
46.1 C (115.0 F)
1936
40.6 C (105.1 F)
101
Coldest night (TNn)
-23.3 C (-9.9 F)
1930
-14.4 C (6.1 F)
101
Wettest day (Rx1day)
255.3 mm (10.1 in)
1945
85.1 mm (3.4 in)
101
Wettest five days (Rx5day)
370.9 mm (14.6 in)
1945
131.2 mm (5.2 in)
101
Longest dry spell (CDD)
76 days
1936
28 days
101
Hottest day (TXx)
The hottest day of the year at Okemah, 1912 to 2012. The record is 46.1 C (115.0 F) in 1936, marked on the chart; the median year is 40.6 C (105.1 F).
Hottest day (TXx) at Okemah by year
Year
Hottest day (TXx)
1912
41.1 C (106.0 F)
1913
41.7 C (107.1 F)
1914
42.2 C (108.0 F)
1915
36.7 C (98.1 F)
1916
40.6 C (105.1 F)
1917
41.7 C (107.1 F)
1918
42.8 C (109.0 F)
1919
41.1 C (106.0 F)
1920
39.4 C (102.9 F)
1921
42.8 C (109.0 F)
1922
40.6 C (105.1 F)
1923
43.3 C (109.9 F)
1924
40.0 C (104.0 F)
1925
42.2 C (108.0 F)
1926
39.4 C (102.9 F)
1927
36.7 C (98.1 F)
1928
37.8 C (100.0 F)
1929
41.7 C (107.1 F)
1930
42.2 C (108.0 F)
1931
41.1 C (106.0 F)
1932
38.3 C (100.9 F)
1933
42.8 C (109.0 F)
1934
42.8 C (109.0 F)
1935
41.1 C (106.0 F)
1936
46.1 C (115.0 F)
1937
43.3 C (109.9 F)
1938
37.2 C (99.0 F)
1939
43.9 C (111.0 F)
1940
37.8 C (100.0 F)
1941
41.7 C (107.1 F)
1942
40.6 C (105.1 F)
1943
44.4 C (111.9 F)
1944
42.2 C (108.0 F)
1945
39.4 C (102.9 F)
1946
43.3 C (109.9 F)
1947
40.6 C (105.1 F)
1948
38.9 C (102.0 F)
1949
38.9 C (102.0 F)
1950
36.7 C (98.1 F)
1951
43.3 C (109.9 F)
1952
41.7 C (107.1 F)
1953
41.7 C (107.1 F)
1954
44.4 C (111.9 F)
1955
39.4 C (102.9 F)
1956
43.9 C (111.0 F)
1957
40.0 C (104.0 F)
1958
36.7 C (98.1 F)
1959
35.6 C (96.1 F)
1960
39.4 C (102.9 F)
1961
36.1 C (97.0 F)
1962
40.6 C (105.1 F)
1963
38.9 C (102.0 F)
1964
41.7 C (107.1 F)
1965
39.4 C (102.9 F)
1966
41.7 C (107.1 F)
1967
38.3 C (100.9 F)
1968
37.2 C (99.0 F)
1969
40.6 C (105.1 F)
1970
41.1 C (106.0 F)
1971
37.8 C (100.0 F)
1972
40.6 C (105.1 F)
1973
37.2 C (99.0 F)
1974
42.2 C (108.0 F)
1975
37.8 C (100.0 F)
1976
38.9 C (102.0 F)
1977
41.7 C (107.1 F)
1978
41.1 C (106.0 F)
1979
36.7 C (98.1 F)
1980
42.8 C (109.0 F)
1981
40.6 C (105.1 F)
1982
38.9 C (102.0 F)
1983
40.0 C (104.0 F)
1984
42.2 C (108.0 F)
1985
41.7 C (107.1 F)
1986
42.2 C (108.0 F)
1987
37.8 C (100.0 F)
1988
37.2 C (99.0 F)
1989
37.2 C (99.0 F)
1990
40.0 C (104.0 F)
1991
38.3 C (100.9 F)
1992
35.0 C (95.0 F)
1993
40.0 C (104.0 F)
1994
38.3 C (100.9 F)
1995
41.1 C (106.0 F)
1996
42.2 C (108.0 F)
1997
38.3 C (100.9 F)
1998
42.8 C (109.0 F)
1999
41.1 C (106.0 F)
2000
42.2 C (108.0 F)
2001
39.4 C (102.9 F)
2002
37.2 C (99.0 F)
2003
40.6 C (105.1 F)
2004
35.6 C (96.1 F)
2005
37.8 C (100.0 F)
2006
40.0 C (104.0 F)
2007
38.3 C (100.9 F)
2008
40.0 C (104.0 F)
2009
38.9 C (102.0 F)
2010
38.9 C (102.0 F)
2011
43.9 C (111.0 F)
2012
42.8 C (109.0 F)
Coldest night (TNn)
The coldest night of the year at Okemah, 1912 to 2012. The record is -23.3 C (-9.9 F) in 1930, marked on the chart; the median year is -14.4 C (6.1 F).
Coldest night (TNn) at Okemah by year
Year
Coldest night (TNn)
1912
-6.7 C (19.9 F)
1913
-17.8 C (0.0 F)
1914
-15.6 C (3.9 F)
1915
-11.1 C (12.0 F)
1916
-18.3 C (-0.9 F)
1917
-17.2 C (1.0 F)
1918
-22.8 C (-9.0 F)
1919
-14.4 C (6.1 F)
1920
-12.2 C (10.0 F)
1921
-9.4 C (15.1 F)
1922
-11.1 C (12.0 F)
1923
-12.2 C (10.0 F)
1924
-17.8 C (0.0 F)
1925
-13.3 C (8.1 F)
1926
-15.0 C (5.0 F)
1927
-16.1 C (3.0 F)
1928
-16.1 C (3.0 F)
1929
-17.8 C (0.0 F)
1930
-23.3 C (-9.9 F)
1931
-9.4 C (15.1 F)
1932
-13.3 C (8.1 F)
1933
-21.1 C (-6.0 F)
1934
-11.1 C (12.0 F)
1935
-17.2 C (1.0 F)
1936
-17.2 C (1.0 F)
1937
-13.3 C (8.1 F)
1938
-12.2 C (10.0 F)
1939
-13.3 C (8.1 F)
1940
-18.9 C (-2.0 F)
1941
-9.4 C (15.1 F)
1942
-18.9 C (-2.0 F)
1943
-18.9 C (-2.0 F)
1944
-17.8 C (0.0 F)
1945
-15.0 C (5.0 F)
1946
-12.8 C (9.0 F)
1947
-22.2 C (-8.0 F)
1948
-18.9 C (-2.0 F)
1949
-16.1 C (3.0 F)
1950
-16.7 C (1.9 F)
1951
-18.3 C (-0.9 F)
1952
-8.3 C (17.1 F)
1953
-12.2 C (10.0 F)
1954
-14.4 C (6.1 F)
1955
-13.3 C (8.1 F)
1956
-13.3 C (8.1 F)
1957
-11.7 C (10.9 F)
1958
-16.1 C (3.0 F)
1959
-18.3 C (-0.9 F)
1960
-15.0 C (5.0 F)
1961
-15.0 C (5.0 F)
1962
-18.9 C (-2.0 F)
1963
-18.3 C (-0.9 F)
1964
-16.1 C (3.0 F)
1965
-14.4 C (6.1 F)
1966
-17.2 C (1.0 F)
1967
-13.9 C (7.0 F)
1968
-17.2 C (1.0 F)
1969
-16.1 C (3.0 F)
1970
-16.7 C (1.9 F)
1971
-15.6 C (3.9 F)
1972
-16.1 C (3.0 F)
1973
-11.7 C (10.9 F)
1974
-13.9 C (7.0 F)
1975
-13.3 C (8.1 F)
1976
-16.7 C (1.9 F)
1977
-18.9 C (-2.0 F)
1978
-16.7 C (1.9 F)
1979
-18.3 C (-0.9 F)
1980
-13.3 C (8.1 F)
1981
-18.3 C (-0.9 F)
1982
-20.6 C (-5.1 F)
1983
-19.4 C (-2.9 F)
1984
-16.7 C (1.9 F)
1985
-18.9 C (-2.0 F)
1986
-13.9 C (7.0 F)
1987
-8.9 C (16.0 F)
1988
-18.9 C (-2.0 F)
1989
-22.8 C (-9.0 F)
1990
-15.6 C (3.9 F)
1991
-10.0 C (14.0 F)
1992
-10.6 C (12.9 F)
1993
-13.3 C (8.1 F)
1994
-13.3 C (8.1 F)
1995
-10.0 C (14.0 F)
1996
-16.1 C (3.0 F)
1997
-12.8 C (9.0 F)
1998
-10.6 C (12.9 F)
1999
-10.0 C (14.0 F)
2000
-11.1 C (12.0 F)
2001
-10.6 C (12.9 F)
2002
-14.4 C (6.1 F)
2003
-12.2 C (10.0 F)
2004
-12.2 C (10.0 F)
2005
-14.4 C (6.1 F)
2006
-10.6 C (12.9 F)
2007
-13.3 C (8.1 F)
2008
-10.6 C (12.9 F)
2009
-10.0 C (14.0 F)
2010
-14.4 C (6.1 F)
2011
-10.6 C (12.9 F)
2012
-4.4 C (24.1 F)
Wettest day (Rx1day)
The wettest day of the year at Okemah, 1912 to 2012. The record is 255.3 mm (10.1 in) in 1945, marked on the chart; the median year is 85.1 mm (3.4 in).
Wettest day (Rx1day) at Okemah by year
Year
Wettest day (Rx1day)
1912
86.4 mm (3.4 in)
1913
49.5 mm (1.9 in)
1914
50.8 mm (2.0 in)
1915
91.4 mm (3.6 in)
1916
83.8 mm (3.3 in)
1917
50.8 mm (2.0 in)
1918
101.3 mm (4.0 in)
1919
50.8 mm (2.0 in)
1920
68.6 mm (2.7 in)
1921
113.0 mm (4.4 in)
1922
57.2 mm (2.3 in)
1923
135.6 mm (5.3 in)
1924
46.0 mm (1.8 in)
1925
106.7 mm (4.2 in)
1926
71.1 mm (2.8 in)
1927
68.6 mm (2.7 in)
1928
63.5 mm (2.5 in)
1929
59.7 mm (2.4 in)
1930
76.2 mm (3.0 in)
1931
95.3 mm (3.8 in)
1932
149.9 mm (5.9 in)
1933
113.8 mm (4.5 in)
1934
88.9 mm (3.5 in)
1935
95.5 mm (3.8 in)
1936
59.7 mm (2.4 in)
1937
53.3 mm (2.1 in)
1938
62.2 mm (2.4 in)
1939
108.5 mm (4.3 in)
1940
88.1 mm (3.5 in)
1941
167.6 mm (6.6 in)
1942
54.4 mm (2.1 in)
1943
128.3 mm (5.1 in)
1944
68.6 mm (2.7 in)
1945
255.3 mm (10.1 in)
1946
81.3 mm (3.2 in)
1947
55.6 mm (2.2 in)
1948
171.7 mm (6.8 in)
1949
139.7 mm (5.5 in)
1950
133.4 mm (5.3 in)
1951
50.3 mm (2.0 in)
1952
54.6 mm (2.1 in)
1953
114.8 mm (4.5 in)
1954
58.4 mm (2.3 in)
1955
63.2 mm (2.5 in)
1956
42.2 mm (1.7 in)
1957
88.4 mm (3.5 in)
1958
123.7 mm (4.9 in)
1959
93.7 mm (3.7 in)
1960
89.9 mm (3.5 in)
1961
67.8 mm (2.7 in)
1962
78.2 mm (3.1 in)
1963
123.2 mm (4.9 in)
1964
72.4 mm (2.9 in)
1965
59.2 mm (2.3 in)
1966
58.4 mm (2.3 in)
1967
85.9 mm (3.4 in)
1968
85.1 mm (3.4 in)
1969
85.1 mm (3.4 in)
1970
137.2 mm (5.4 in)
1971
64.8 mm (2.6 in)
1972
87.1 mm (3.4 in)
1973
63.0 mm (2.5 in)
1974
98.0 mm (3.9 in)
1975
56.4 mm (2.2 in)
1976
48.0 mm (1.9 in)
1977
74.9 mm (2.9 in)
1978
60.2 mm (2.4 in)
1979
137.2 mm (5.4 in)
1980
52.3 mm (2.1 in)
1981
68.3 mm (2.7 in)
1982
62.7 mm (2.5 in)
1983
106.9 mm (4.2 in)
1984
94.0 mm (3.7 in)
1985
85.1 mm (3.4 in)
1986
149.4 mm (5.9 in)
1987
91.4 mm (3.6 in)
1988
156.0 mm (6.1 in)
1989
91.4 mm (3.6 in)
1990
71.1 mm (2.8 in)
1991
81.8 mm (3.2 in)
1992
72.9 mm (2.9 in)
1993
169.7 mm (6.7 in)
1994
109.2 mm (4.3 in)
1995
69.6 mm (2.7 in)
1996
73.7 mm (2.9 in)
1997
52.1 mm (2.1 in)
1998
100.3 mm (3.9 in)
1999
72.4 mm (2.9 in)
2000
79.2 mm (3.1 in)
2001
102.9 mm (4.1 in)
2002
66.0 mm (2.6 in)
2003
71.1 mm (2.8 in)
2004
91.9 mm (3.6 in)
2005
72.9 mm (2.9 in)
2006
100.3 mm (3.9 in)
2007
162.6 mm (6.4 in)
2008
85.1 mm (3.4 in)
2009
129.5 mm (5.1 in)
2010
99.8 mm (3.9 in)
2011
94.2 mm (3.7 in)
2012
99.1 mm (3.9 in)
Wettest five days (Rx5day)
The wettest five days of the year at Okemah, 1912 to 2012. The record is 370.9 mm (14.6 in) in 1945, marked on the chart; the median year is 131.2 mm (5.2 in).
Wettest five days (Rx5day) at Okemah by year
Year
Wettest five days (Rx5day)
1912
86.4 mm (3.4 in)
1913
72.4 mm (2.9 in)
1914
92.7 mm (3.6 in)
1915
134.7 mm (5.3 in)
1916
128.4 mm (5.1 in)
1917
101.4 mm (4.0 in)
1918
147.8 mm (5.8 in)
1919
91.9 mm (3.6 in)
1920
101.1 mm (4.0 in)
1921
113.0 mm (4.4 in)
1922
94.7 mm (3.7 in)
1923
233.5 mm (9.2 in)
1924
110.0 mm (4.3 in)
1925
167.2 mm (6.6 in)
1926
139.2 mm (5.5 in)
1927
124.5 mm (4.9 in)
1928
71.1 mm (2.8 in)
1929
92.7 mm (3.6 in)
1930
93.5 mm (3.7 in)
1931
185.9 mm (7.3 in)
1932
176.8 mm (7.0 in)
1933
143.8 mm (5.7 in)
1934
147.9 mm (5.8 in)
1935
150.1 mm (5.9 in)
1936
95.6 mm (3.8 in)
1937
66.5 mm (2.6 in)
1938
163.0 mm (6.4 in)
1939
112.6 mm (4.4 in)
1940
101.5 mm (4.0 in)
1941
217.6 mm (8.6 in)
1942
124.2 mm (4.9 in)
1943
256.1 mm (10.1 in)
1944
153.2 mm (6.0 in)
1945
370.9 mm (14.6 in)
1946
123.9 mm (4.9 in)
1947
107.2 mm (4.2 in)
1948
344.4 mm (13.6 in)
1949
194.4 mm (7.7 in)
1950
202.4 mm (8.0 in)
1951
101.4 mm (4.0 in)
1952
86.5 mm (3.4 in)
1953
156.8 mm (6.2 in)
1954
135.2 mm (5.3 in)
1955
136.9 mm (5.4 in)
1956
61.3 mm (2.4 in)
1957
144.9 mm (5.7 in)
1958
145.5 mm (5.7 in)
1959
139.7 mm (5.5 in)
1960
153.2 mm (6.0 in)
1961
79.5 mm (3.1 in)
1962
102.3 mm (4.0 in)
1963
168.2 mm (6.6 in)
1964
131.2 mm (5.2 in)
1965
85.6 mm (3.4 in)
1966
127.5 mm (5.0 in)
1967
155.2 mm (6.1 in)
1968
90.7 mm (3.6 in)
1969
160.0 mm (6.3 in)
1970
140.2 mm (5.5 in)
1971
105.6 mm (4.2 in)
1972
181.9 mm (7.2 in)
1973
165.9 mm (6.5 in)
1974
119.8 mm (4.7 in)
1975
75.9 mm (3.0 in)
1976
97.5 mm (3.8 in)
1977
96.6 mm (3.8 in)
1978
103.4 mm (4.1 in)
1979
155.7 mm (6.1 in)
1980
91.2 mm (3.6 in)
1981
129.8 mm (5.1 in)
1982
90.4 mm (3.6 in)
1983
132.4 mm (5.2 in)
1984
112.5 mm (4.4 in)
1985
231.5 mm (9.1 in)
1986
224.2 mm (8.8 in)
1987
144.2 mm (5.7 in)
1988
161.3 mm (6.4 in)
1989
103.1 mm (4.1 in)
1990
185.4 mm (7.3 in)
1991
112.3 mm (4.4 in)
1992
158.2 mm (6.2 in)
1993
181.2 mm (7.1 in)
1994
154.4 mm (6.1 in)
1995
126.3 mm (5.0 in)
1996
171.0 mm (6.7 in)
1997
87.1 mm (3.4 in)
1998
102.1 mm (4.0 in)
1999
164.1 mm (6.5 in)
2000
127.7 mm (5.0 in)
2001
170.7 mm (6.7 in)
2002
96.6 mm (3.8 in)
2003
193.2 mm (7.6 in)
2004
136.2 mm (5.4 in)
2005
142.0 mm (5.6 in)
2006
102.1 mm (4.0 in)
2007
176.6 mm (7.0 in)
2008
121.1 mm (4.8 in)
2009
175.3 mm (6.9 in)
2010
101.6 mm (4.0 in)
2011
168.2 mm (6.6 in)
2012
129.1 mm (5.1 in)
Longest dry spell (CDD)
The longest dry spell of the year at Okemah, 1912 to 2012. The record is 76 days in 1936, marked on the chart; the median year is 28 days.
Longest dry spell (CDD) at Okemah by year
Year
Longest dry spell (CDD)
1912
27 days
1913
28 days
1914
50 days
1915
24 days
1916
34 days
1917
50 days
1918
31 days
1919
26 days
1920
17 days
1921
32 days
1922
21 days
1923
31 days
1924
28 days
1925
27 days
1926
21 days
1927
27 days
1928
22 days
1929
47 days
1930
32 days
1931
39 days
1932
21 days
1933
27 days
1934
31 days
1935
23 days
1936
76 days
1937
31 days
1938
42 days
1939
23 days
1940
26 days
1941
23 days
1942
34 days
1943
33 days
1944
27 days
1945
29 days
1946
39 days
1947
39 days
1948
28 days
1949
26 days
1950
30 days
1951
23 days
1952
41 days
1953
25 days
1954
37 days
1955
56 days
1956
55 days
1957
19 days
1958
32 days
1959
23 days
1960
26 days
1961
21 days
1962
22 days
1963
54 days
1964
29 days
1965
35 days
1966
30 days
1967
25 days
1968
16 days
1969
32 days
1970
30 days
1971
38 days
1972
29 days
1973
20 days
1974
21 days
1975
17 days
1976
21 days
1977
24 days
1978
29 days
1979
32 days
1980
58 days
1981
31 days
1982
27 days
1983
20 days
1984
17 days
1985
29 days
1986
36 days
1987
29 days
1988
34 days
1989
38 days
1990
26 days
1991
40 days
1992
18 days
1993
22 days
1994
19 days
1995
26 days
1996
44 days
1997
23 days
1998
30 days
1999
36 days
2000
56 days
2001
21 days
2002
28 days
2003
22 days
2004
18 days
2005
36 days
2006
22 days
2007
33 days
2008
27 days
2009
29 days
2010
25 days
2011
2 days
2012
28 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
90 years with a frost
Across 90 years with a frost, the median last spring frost at Okemah falls on 29 March and the median first autumn frost on 7 November, which leaves a median of 226 days between them.
In 1977 to 2011 the median growing season was 233 days. That is 19 days more than in 1913 to 1944.
Fitted over all years, the growing season changes by +2.4 days per decade at this station.
Frost dates and growing season at Okemah
Measure
Median, all years
Earliest period (1913 to 1944)
Recent period (1977 to 2011)
Recent against earliest
Fitted trend
Last spring frost
29 March
1 April
25 March
7 days earlier
-1.3 days per decade
First autumn frost
7 November
4 November
11 November
7 days later
+1.2 days per decade
Growing days
226 days
214 days
233 days
19 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
96 years, 1913 to 2010
A day with at least 81.5 mm (3.2 in) of rain is expected about once in 2 years. A day with at least 220.8 mm (8.7 in) of rain is expected about once in 100 years.
Rainfall return levels at Okemah: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
81.5 mm (3.2 in)
5 years
112.0 mm (4.4 in)
10 years
134.7 mm (5.3 in)
25 years
166.5 mm (6.6 in)
50 years
192.6 mm (7.6 in)
100 years
220.8 mm (8.7 in)
Longer than the 96 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, 96 years of values from 1913 to 2010.
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: 255.3 mm (10.1 in) in 1945; 171.7 mm (6.8 in) in 1948; 169.7 mm (6.7 in) in 1993.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Okemah standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Okemah 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 2026-10-17 (17 October 2026). Records are computed by this site and are not official.