Record envelope, standing records and threshold days for Ozark 6 NNW (USC00016218), Alabama, United States, with 85 years of record.
Key Facts for Ozark 6 NNW
Ozark 6 NNW (USC00016218) is a weather station in Alabama, United States at 31.53 latitude and -85.68 longitude, 143 m (470 ft) above sea level.
The station reports from 1902 to 1986, 85 years of record.
1,464 records set at Ozark 6 NNW still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Ozark 6 NNW set a daily record low maximum temperature of 9.4 C (48.9 F) on 21 March 1986.
About the Station
Location: Alabama, United States, 31.53 latitude, -85.68 longitude.
Elevation: 143 m (470 ft).
Period of record: 1902 to 1986, 85 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 Ozark 6 NNW. 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 Ozark 6 NNW, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
28.9 C (84.0 F)
-16.7 C (1.9 F)
n/a
n/a
Feb
30.6 C (87.1 F)
-12.2 C (10.0 F)
n/a
n/a
Mar
31.7 C (89.1 F)
-9.4 C (15.1 F)
n/a
n/a
Apr
34.4 C (93.9 F)
-2.2 C (28.0 F)
n/a
n/a
May
38.3 C (100.9 F)
4.4 C (39.9 F)
n/a
n/a
Jun
41.7 C (107.1 F)
8.3 C (46.9 F)
n/a
n/a
Jul
41.7 C (107.1 F)
13.3 C (55.9 F)
n/a
n/a
Aug
41.7 C (107.1 F)
11.7 C (53.1 F)
n/a
n/a
Sep
42.8 C (109.0 F)
2.8 C (37.0 F)
n/a
n/a
Oct
37.8 C (100.0 F)
-1.1 C (30.0 F)
n/a
n/a
Nov
32.2 C (90.0 F)
-10.0 C (14.0 F)
n/a
n/a
Dec
29.4 C (84.9 F)
-16.1 C (3.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Ozark 6 NNW still stand. 1969 holds the most, with 44.
Standing records at Ozark 6 NNW by the year they were set
Year set
Standing records
1902
14
1903
25
1904
12
1905
16
1906
17
1907
16
1908
9
1909
15
1910
14
1911
10
1912
23
1913
31
1914
16
1915
29
1916
20
1917
42
1918
37
1919
22
1920
25
1921
17
1922
25
1923
21
1924
13
1925
40
1926
8
1927
30
1928
9
1929
18
1930
17
1931
12
1932
23
1933
18
1934
11
1935
20
1936
13
1937
37
1938
12
1939
11
1940
17
1941
11
1942
8
1943
21
1944
10
1945
15
1946
12
1947
9
1948
21
1949
7
1950
23
1951
19
1952
19
1953
9
1954
35
1955
26
1956
12
1957
19
1958
17
1959
7
1960
11
1961
28
1962
20
1963
20
1964
15
1965
3
1966
9
1967
23
1968
17
1969
44
1970
11
1971
11
1972
8
1973
8
1974
13
1975
17
1976
9
1977
17
1978
11
1979
6
1980
17
1981
18
1982
14
1983
13
1984
21
1985
11
1986
4
All-Time Record Progression
7 new records
7 all-time records were set at Ozark 6 NNW between 2 February 1951 and 21 January 1985. Each dot is a new record.
When Ozark 6 NNW set new all-time records
Date
Kind
Detail
1951-02-02
Record low maximum temperature
Record low maximum temperature -2.2 C (28.0 F)
1962-12-13
Record low maximum temperature
Record low maximum temperature -3.9 C (25.0 F)
1962-12-13
Record low minimum temperature
Record low minimum temperature -16.1 C (3.0 F)
1980-07-13
Record high minimum temperature
Record high minimum temperature 27.2 C (81.0 F)
1982-01-11
Record low minimum temperature
Record low minimum temperature -16.7 C (1.9 F)
1983-12-25
Record low maximum temperature
Record low maximum temperature -4.4 C (24.1 F)
1985-01-21
Record low maximum temperature
Record low maximum temperature -5.6 C (21.9 F)
Wettest Day of Each Month
Mar: 340.4 mm (13.4 in)
The wettest day on record for each calendar month at Ozark 6 NNW. The most was 340.4 mm (13.4 in) on 15 March 1929.
Record daily precipitation for each month at Ozark 6 NNW
Month
Record daily precipitation (mm)
Date
Jan
152.4 mm (6.0 in)
25 January 1978
Feb
113.5 mm (4.5 in)
20 February 1971
Mar
340.4 mm (13.4 in)
15 March 1929
Apr
175.3 mm (6.9 in)
10 April 1975
May
100.3 mm (3.9 in)
3 May 1984
Jun
118.1 mm (4.6 in)
18 June 1963
Jul
228.6 mm (9.0 in)
8 July 1916
Aug
167.6 mm (6.6 in)
1 August 1936
Sep
264.2 mm (10.4 in)
1 September 1937
Oct
207.0 mm (8.1 in)
1 October 1929
Nov
104.1 mm (4.1 in)
7 November 1912
Dec
159.8 mm (6.3 in)
4 December 1953
Period of Record Coverage
1902 to 1986
Complete yearUnder 90 percent of days
85 years of record at Ozark 6 NNW, 1902 to 1986. 13 years have data for under 90 percent of days and are left out of rankings: 1902, 1906, 1907, 1908, 1915, 1916, 1928, 1959 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 63 complete years at Ozark 6 NNW, 1903 to 1985. Blue stripes are years cooler than the station's own mean of 19.1 C (66.4 F); red stripes are warmer. The coolest year was 1969, at 16.9 C (62.5 F), and the warmest was 1921, at 20.5 C (68.9 F). The strongest colour marks a difference of 2.2 C (4.0 F).
Annual mean temperature at Ozark 6 NNW as warming stripes, 1903 to 1985
Year
Annual mean temperature
Difference from the station mean
1903
17.8 C
-1.32 C
1904
18.5 C
-0.55 C
1905
18.6 C
-0.52 C
1910
18.5 C
-0.54 C
1912
18.0 C
-1.10 C
1913
18.7 C
-0.34 C
1917
18.8 C
-0.24 C
1918
19.6 C
+0.52 C
1919
20.1 C
+1.01 C
1921
20.5 C
+1.43 C
1922
20.4 C
+1.31 C
1923
19.3 C
+0.22 C
1924
18.7 C
-0.36 C
1925
20.4 C
+1.28 C
1929
19.3 C
+0.21 C
1930
18.7 C
-0.39 C
1932
19.5 C
+0.39 C
1933
20.0 C
+0.89 C
1934
19.6 C
+0.48 C
1935
19.3 C
+0.26 C
1936
19.7 C
+0.66 C
1937
18.9 C
-0.22 C
1938
19.6 C
+0.47 C
1939
19.8 C
+0.67 C
1940
18.2 C
-0.91 C
1941
19.5 C
+0.40 C
1942
18.9 C
-0.16 C
1943
19.5 C
+0.39 C
1944
19.7 C
+0.60 C
1945
20.0 C
+0.92 C
1946
20.1 C
+1.00 C
1947
19.3 C
+0.21 C
1948
19.7 C
+0.60 C
1949
20.0 C
+0.96 C
1950
19.5 C
+0.46 C
1951
20.0 C
+0.96 C
1952
19.8 C
+0.68 C
1953
19.7 C
+0.60 C
1954
19.7 C
+0.61 C
1955
19.6 C
+0.51 C
1956
19.5 C
+0.45 C
1958
18.8 C
-0.30 C
1961
18.0 C
-1.06 C
1962
18.5 C
-0.55 C
1963
18.0 C
-1.09 C
1964
18.4 C
-0.64 C
1965
19.1 C
+0.02 C
1966
18.2 C
-0.89 C
1967
18.5 C
-0.56 C
1968
17.7 C
-1.40 C
1969
16.9 C
-2.15 C
1970
18.7 C
-0.39 C
1971
18.9 C
-0.15 C
1974
19.6 C
+0.48 C
1975
19.0 C
-0.09 C
1976
18.2 C
-0.92 C
1977
18.9 C
-0.19 C
1978
18.8 C
-0.27 C
1979
18.6 C
-0.50 C
1980
19.3 C
+0.19 C
1983
18.1 C
-0.99 C
1984
18.8 C
-0.32 C
1985
18.6 C
-0.46 C
The fitted trend in annual mean temperature here over 1903 to 1985 is -0.08 C (-0.16 to 0.00) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.14 F (-0.29 to 0.01) per decade. The slope is a straight line fitted to 63 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Ozark 6 NNW
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.08 C (-0.16 to 0.00) per decade
-0.14 F (-0.29 to 0.01) per decade
1903 to 1985
63
Not clearly different from zero
Mean daily maximum
-0.02 C (-0.11 to 0.07) per decade
-0.03 F (-0.19 to 0.12) per decade
1903 to 1985
63
Not clearly different from zero
Mean daily minimum
-0.14 C (-0.24 to -0.04) per decade
-0.2 F (-0.4 to -0.1) per decade
1903 to 1985
63
Fall
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
1902 to 1986
Yearly extremes at Ozark 6 NNW: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
42.8 C (109.0 F)
1925
37.8 C (100.0 F)
85
Coldest night (TNn)
-16.7 C (1.9 F)
1982
-8.3 C (17.1 F)
85
Wettest day (Rx1day)
340.4 mm (13.4 in)
1929
88.9 mm (3.5 in)
85
Wettest five days (Rx5day)
446.3 mm (17.6 in)
1929
139.2 mm (5.5 in)
85
Longest dry spell (CDD)
57 days
1904
22 days
85
Hottest day (TXx)
The hottest day of the year at Ozark 6 NNW, 1902 to 1986. The record is 42.8 C (109.0 F) in 1925, marked on the chart; the median year is 37.8 C (100.0 F).
Hottest day (TXx) at Ozark 6 NNW by year
Year
Hottest day (TXx)
1902
39.4 C (102.9 F)
1903
36.7 C (98.1 F)
1904
36.1 C (97.0 F)
1905
36.1 C (97.0 F)
1906
36.7 C (98.1 F)
1907
36.7 C (98.1 F)
1908
37.8 C (100.0 F)
1909
36.7 C (98.1 F)
1910
35.6 C (96.1 F)
1911
37.2 C (99.0 F)
1912
37.2 C (99.0 F)
1913
38.3 C (100.9 F)
1914
40.0 C (104.0 F)
1915
38.9 C (102.0 F)
1916
38.3 C (100.9 F)
1917
38.3 C (100.9 F)
1918
40.6 C (105.1 F)
1919
37.2 C (99.0 F)
1920
37.2 C (99.0 F)
1921
36.7 C (98.1 F)
1922
37.8 C (100.0 F)
1923
35.0 C (95.0 F)
1924
37.2 C (99.0 F)
1925
42.8 C (109.0 F)
1926
36.1 C (97.0 F)
1927
38.3 C (100.9 F)
1928
35.0 C (95.0 F)
1929
36.7 C (98.1 F)
1930
41.7 C (107.1 F)
1931
40.0 C (104.0 F)
1932
38.9 C (102.0 F)
1933
39.4 C (102.9 F)
1934
37.2 C (99.0 F)
1935
35.6 C (96.1 F)
1936
38.9 C (102.0 F)
1937
36.1 C (97.0 F)
1938
38.9 C (102.0 F)
1939
38.3 C (100.9 F)
1940
36.7 C (98.1 F)
1941
37.2 C (99.0 F)
1942
37.2 C (99.0 F)
1943
37.8 C (100.0 F)
1944
37.8 C (100.0 F)
1945
36.7 C (98.1 F)
1946
35.0 C (95.0 F)
1947
36.7 C (98.1 F)
1948
37.8 C (100.0 F)
1949
36.1 C (97.0 F)
1950
38.3 C (100.9 F)
1951
38.9 C (102.0 F)
1952
39.4 C (102.9 F)
1953
37.8 C (100.0 F)
1954
41.7 C (107.1 F)
1955
36.7 C (98.1 F)
1956
37.8 C (100.0 F)
1957
39.4 C (102.9 F)
1958
38.9 C (102.0 F)
1959
38.9 C (102.0 F)
1960
38.3 C (100.9 F)
1961
37.2 C (99.0 F)
1962
37.8 C (100.0 F)
1963
39.4 C (102.9 F)
1964
37.8 C (100.0 F)
1965
36.1 C (97.0 F)
1966
37.8 C (100.0 F)
1967
36.7 C (98.1 F)
1968
37.2 C (99.0 F)
1969
38.3 C (100.9 F)
1970
36.7 C (98.1 F)
1971
36.1 C (97.0 F)
1972
37.2 C (99.0 F)
1973
35.0 C (95.0 F)
1974
36.1 C (97.0 F)
1975
35.6 C (96.1 F)
1976
36.1 C (97.0 F)
1977
38.9 C (102.0 F)
1978
39.4 C (102.9 F)
1979
37.8 C (100.0 F)
1980
41.1 C (106.0 F)
1981
38.9 C (102.0 F)
1982
37.2 C (99.0 F)
1983
38.3 C (100.9 F)
1984
36.1 C (97.0 F)
1985
39.4 C (102.9 F)
1986
28.9 C (84.0 F)
Coldest night (TNn)
The coldest night of the year at Ozark 6 NNW, 1902 to 1986. The record is -16.7 C (1.9 F) in 1982, marked on the chart; the median year is -8.3 C (17.1 F).
Coldest night (TNn) at Ozark 6 NNW by year
Year
Coldest night (TNn)
1902
-8.3 C (17.1 F)
1903
-6.7 C (19.9 F)
1904
-5.6 C (21.9 F)
1905
-11.7 C (10.9 F)
1906
-5.0 C (23.0 F)
1907
-1.7 C (28.9 F)
1908
-1.7 C (28.9 F)
1909
-8.9 C (16.0 F)
1910
-5.0 C (23.0 F)
1911
-6.1 C (21.0 F)
1912
-7.2 C (19.0 F)
1913
-3.3 C (26.1 F)
1914
-7.2 C (19.0 F)
1915
-2.2 C (28.0 F)
1916
-5.6 C (21.9 F)
1917
-12.2 C (10.0 F)
1918
-11.7 C (10.9 F)
1919
-10.0 C (14.0 F)
1920
-6.7 C (19.9 F)
1921
0.0 C (32.0 F)
1922
-3.9 C (25.0 F)
1923
-6.7 C (19.9 F)
1924
-12.8 C (9.0 F)
1925
-10.6 C (12.9 F)
1926
-2.8 C (27.0 F)
1927
-10.0 C (14.0 F)
1928
-13.3 C (8.1 F)
1929
-7.8 C (18.0 F)
1930
-8.3 C (17.1 F)
1931
-5.0 C (23.0 F)
1932
-7.8 C (18.0 F)
1933
-11.1 C (12.0 F)
1934
-7.8 C (18.0 F)
1935
-7.8 C (18.0 F)
1936
-7.8 C (18.0 F)
1937
-10.6 C (12.9 F)
1938
-6.7 C (19.9 F)
1939
-3.3 C (26.1 F)
1940
-12.2 C (10.0 F)
1941
-4.4 C (24.1 F)
1942
-10.6 C (12.9 F)
1943
-8.3 C (17.1 F)
1944
-5.0 C (23.0 F)
1945
-8.9 C (16.0 F)
1946
-3.3 C (26.1 F)
1947
-7.2 C (19.0 F)
1948
-8.3 C (17.1 F)
1949
-2.8 C (27.0 F)
1950
-10.0 C (14.0 F)
1951
-11.7 C (10.9 F)
1952
-5.6 C (21.9 F)
1953
-6.1 C (21.0 F)
1954
-6.1 C (21.0 F)
1955
-7.8 C (18.0 F)
1956
-4.4 C (24.1 F)
1957
-9.4 C (15.1 F)
1958
-10.0 C (14.0 F)
1959
-8.3 C (17.1 F)
1960
-8.9 C (16.0 F)
1961
-8.9 C (16.0 F)
1962
-16.1 C (3.0 F)
1963
-15.0 C (5.0 F)
1964
-9.4 C (15.1 F)
1965
-8.3 C (17.1 F)
1966
-15.6 C (3.9 F)
1967
-7.8 C (18.0 F)
1968
-10.0 C (14.0 F)
1969
-9.4 C (15.1 F)
1970
-12.8 C (9.0 F)
1971
-9.4 C (15.1 F)
1972
-11.1 C (12.0 F)
1973
-6.7 C (19.9 F)
1974
-6.7 C (19.9 F)
1975
-8.9 C (16.0 F)
1976
-8.9 C (16.0 F)
1977
-15.0 C (5.0 F)
1978
-7.8 C (18.0 F)
1979
-10.0 C (14.0 F)
1980
-9.4 C (15.1 F)
1981
-11.1 C (12.0 F)
1982
-16.7 C (1.9 F)
1983
-15.0 C (5.0 F)
1984
-8.3 C (17.1 F)
1985
-13.9 C (7.0 F)
1986
-13.3 C (8.1 F)
Wettest day (Rx1day)
The wettest day of the year at Ozark 6 NNW, 1902 to 1986. The record is 340.4 mm (13.4 in) in 1929, marked on the chart; the median year is 88.9 mm (3.5 in).
Wettest day (Rx1day) at Ozark 6 NNW by year
Year
Wettest day (Rx1day)
1902
48.3 mm (1.9 in)
1903
101.6 mm (4.0 in)
1904
64.8 mm (2.6 in)
1905
71.1 mm (2.8 in)
1906
111.3 mm (4.4 in)
1907
85.9 mm (3.4 in)
1908
76.7 mm (3.0 in)
1909
58.4 mm (2.3 in)
1910
111.8 mm (4.4 in)
1911
106.7 mm (4.2 in)
1912
124.5 mm (4.9 in)
1913
76.2 mm (3.0 in)
1914
63.5 mm (2.5 in)
1915
108.0 mm (4.3 in)
1916
228.6 mm (9.0 in)
1917
93.2 mm (3.7 in)
1918
76.2 mm (3.0 in)
1919
124.5 mm (4.9 in)
1920
67.3 mm (2.6 in)
1921
68.6 mm (2.7 in)
1922
81.3 mm (3.2 in)
1923
108.2 mm (4.3 in)
1924
130.8 mm (5.1 in)
1925
129.5 mm (5.1 in)
1926
247.1 mm (9.7 in)
1927
56.4 mm (2.2 in)
1928
138.4 mm (5.4 in)
1929
340.4 mm (13.4 in)
1930
50.8 mm (2.0 in)
1931
40.6 mm (1.6 in)
1932
122.2 mm (4.8 in)
1933
152.4 mm (6.0 in)
1934
163.8 mm (6.4 in)
1935
85.1 mm (3.4 in)
1936
167.6 mm (6.6 in)
1937
264.2 mm (10.4 in)
1938
91.4 mm (3.6 in)
1939
94.0 mm (3.7 in)
1940
58.4 mm (2.3 in)
1941
87.1 mm (3.4 in)
1942
125.7 mm (4.9 in)
1943
81.3 mm (3.2 in)
1944
124.5 mm (4.9 in)
1945
95.3 mm (3.8 in)
1946
133.6 mm (5.3 in)
1947
104.1 mm (4.1 in)
1948
78.7 mm (3.1 in)
1949
60.7 mm (2.4 in)
1950
88.9 mm (3.5 in)
1951
67.6 mm (2.7 in)
1952
47.0 mm (1.9 in)
1953
159.8 mm (6.3 in)
1954
41.9 mm (1.6 in)
1955
158.0 mm (6.2 in)
1956
214.4 mm (8.4 in)
1957
85.3 mm (3.4 in)
1958
61.0 mm (2.4 in)
1959
49.8 mm (2.0 in)
1960
76.2 mm (3.0 in)
1961
72.1 mm (2.8 in)
1962
83.1 mm (3.3 in)
1963
130.0 mm (5.1 in)
1964
92.2 mm (3.6 in)
1965
65.0 mm (2.6 in)
1966
80.8 mm (3.2 in)
1967
77.5 mm (3.1 in)
1968
84.6 mm (3.3 in)
1969
105.2 mm (4.1 in)
1970
119.4 mm (4.7 in)
1971
113.5 mm (4.5 in)
1972
88.4 mm (3.5 in)
1973
108.0 mm (4.3 in)
1974
101.6 mm (4.0 in)
1975
175.3 mm (6.9 in)
1976
74.4 mm (2.9 in)
1977
57.2 mm (2.3 in)
1978
152.4 mm (6.0 in)
1979
81.3 mm (3.2 in)
1980
61.0 mm (2.4 in)
1981
94.7 mm (3.7 in)
1982
102.4 mm (4.0 in)
1983
73.7 mm (2.9 in)
1984
100.3 mm (3.9 in)
1985
87.6 mm (3.4 in)
1986
67.8 mm (2.7 in)
Wettest five days (Rx5day)
The wettest five days of the year at Ozark 6 NNW, 1902 to 1986. The record is 446.3 mm (17.6 in) in 1929, marked on the chart; the median year is 139.2 mm (5.5 in).
Wettest five days (Rx5day) at Ozark 6 NNW by year
Year
Wettest five days (Rx5day)
1902
91.9 mm (3.6 in)
1903
101.6 mm (4.0 in)
1904
98.3 mm (3.9 in)
1905
142.5 mm (5.6 in)
1906
158.8 mm (6.3 in)
1907
154.2 mm (6.1 in)
1908
133.6 mm (5.3 in)
1909
120.1 mm (4.7 in)
1910
139.2 mm (5.5 in)
1911
180.3 mm (7.1 in)
1912
142.3 mm (5.6 in)
1913
135.9 mm (5.4 in)
1914
69.9 mm (2.8 in)
1915
120.7 mm (4.8 in)
1916
309.4 mm (12.2 in)
1917
162.6 mm (6.4 in)
1918
192.2 mm (7.6 in)
1919
160.7 mm (6.3 in)
1920
105.7 mm (4.2 in)
1921
137.5 mm (5.4 in)
1922
117.7 mm (4.6 in)
1923
153.7 mm (6.1 in)
1924
157.2 mm (6.2 in)
1925
229.4 mm (9.0 in)
1926
321.6 mm (12.7 in)
1927
105.8 mm (4.2 in)
1928
176.5 mm (6.9 in)
1929
446.3 mm (17.6 in)
1930
157.2 mm (6.2 in)
1931
61.5 mm (2.4 in)
1932
185.2 mm (7.3 in)
1933
152.4 mm (6.0 in)
1934
171.5 mm (6.8 in)
1935
95.8 mm (3.8 in)
1936
211.1 mm (8.3 in)
1937
327.4 mm (12.9 in)
1938
170.9 mm (6.7 in)
1939
219.5 mm (8.6 in)
1940
99.4 mm (3.9 in)
1941
128.8 mm (5.1 in)
1942
129.2 mm (5.1 in)
1943
137.4 mm (5.4 in)
1944
182.9 mm (7.2 in)
1945
123.2 mm (4.9 in)
1946
195.3 mm (7.7 in)
1947
156.2 mm (6.1 in)
1948
159.0 mm (6.3 in)
1949
122.2 mm (4.8 in)
1950
151.6 mm (6.0 in)
1951
67.6 mm (2.7 in)
1952
72.2 mm (2.8 in)
1953
236.2 mm (9.3 in)
1954
69.1 mm (2.7 in)
1955
182.4 mm (7.2 in)
1956
282.0 mm (11.1 in)
1957
124.7 mm (4.9 in)
1958
106.2 mm (4.2 in)
1959
130.2 mm (5.1 in)
1960
184.4 mm (7.3 in)
1961
128.0 mm (5.0 in)
1962
89.2 mm (3.5 in)
1963
182.3 mm (7.2 in)
1964
177.0 mm (7.0 in)
1965
122.7 mm (4.8 in)
1966
132.1 mm (5.2 in)
1967
160.5 mm (6.3 in)
1968
100.3 mm (3.9 in)
1969
150.4 mm (5.9 in)
1970
140.2 mm (5.5 in)
1971
146.5 mm (5.8 in)
1972
129.0 mm (5.1 in)
1973
120.7 mm (4.8 in)
1974
137.2 mm (5.4 in)
1975
254.0 mm (10.0 in)
1976
148.0 mm (5.8 in)
1977
120.1 mm (4.7 in)
1978
164.1 mm (6.5 in)
1979
130.1 mm (5.1 in)
1980
117.7 mm (4.6 in)
1981
111.5 mm (4.4 in)
1982
109.0 mm (4.3 in)
1983
96.5 mm (3.8 in)
1984
125.3 mm (4.9 in)
1985
190.6 mm (7.5 in)
1986
101.6 mm (4.0 in)
Longest dry spell (CDD)
The longest dry spell of the year at Ozark 6 NNW, 1902 to 1986. The record is 57 days in 1904, marked on the chart; the median year is 22 days.
Longest dry spell (CDD) at Ozark 6 NNW by year
Year
Longest dry spell (CDD)
1902
18 days
1903
31 days
1904
57 days
1905
17 days
1906
26 days
1907
19 days
1908
21 days
1909
40 days
1910
25 days
1911
31 days
1912
20 days
1913
36 days
1914
23 days
1915
35 days
1916
31 days
1917
21 days
1918
23 days
1919
19 days
1920
24 days
1921
28 days
1922
18 days
1923
21 days
1924
25 days
1925
28 days
1926
11 days
1927
25 days
1928
19 days
1929
18 days
1930
24 days
1931
21 days
1932
15 days
1933
22 days
1934
19 days
1935
38 days
1936
19 days
1937
18 days
1938
21 days
1939
42 days
1940
35 days
1941
15 days
1942
23 days
1943
24 days
1944
26 days
1945
16 days
1946
26 days
1947
16 days
1948
19 days
1949
21 days
1950
17 days
1951
24 days
1952
17 days
1953
23 days
1954
20 days
1955
26 days
1956
39 days
1957
15 days
1958
22 days
1959
15 days
1960
14 days
1961
49 days
1962
19 days
1963
32 days
1964
27 days
1965
35 days
1966
18 days
1967
30 days
1968
28 days
1969
22 days
1970
24 days
1971
29 days
1972
23 days
1973
34 days
1974
21 days
1975
20 days
1976
21 days
1977
35 days
1978
38 days
1979
23 days
1980
22 days
1981
21 days
1982
20 days
1983
19 days
1984
39 days
1985
18 days
1986
18 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
61 years with a frost
Across 61 years with a frost, the median last spring frost at Ozark 6 NNW falls on 9 March and the median first autumn frost on 19 November, which leaves a median of 248 days between them.
In 1949 to 1985 the median growing season was 245 days. That is 20 days fewer than in 1903 to 1947.
Fitted over all years, the growing season changes by -1.5 days per decade at this station.
Frost dates and growing season at Ozark 6 NNW
Measure
Median, all years
Earliest period (1903 to 1947)
Recent period (1949 to 1985)
Recent against earliest
Fitted trend
Last spring frost
9 March
5 March
15 March
10 days later
+1.0 days per decade
First autumn frost
19 November
25 November
14 November
11 days earlier
-0.6 days per decade
Growing days
248 days
265 days
245 days
20 days fewer
-1.5 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
78 years, 1903 to 1985
A day with at least 92.3 mm (3.6 in) of rain is expected about once in 2 years. A day with at least 310.7 mm (12.2 in) of rain is expected about once in 100 years.
Rainfall return levels at Ozark 6 NNW: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
92.3 mm (3.6 in)
5 years
133.1 mm (5.2 in)
10 years
166.0 mm (6.5 in)
25 years
215.9 mm (8.5 in)
50 years
259.9 mm (10.2 in)
100 years
310.7 mm (12.2 in)
Longer than the 78 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, 78 years of values from 1903 to 1985.
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: 340.4 mm (13.4 in) in 1929; 264.2 mm (10.4 in) in 1937; 247.1 mm (9.7 in) in 1926.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Ozark 6 NNW standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Ozark 6 NNW 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.