Record envelope, standing records and threshold days for Cortland (USC00301799), New York, United States, with 106 years of record.
Key Facts for Cortland
Cortland (USC00301799) is a weather station in New York, United States at 42.60 latitude and -76.18 longitude, 344 m (1,129 ft) above sea level.
The station reports from 1895 to 2000, 106 years of record.
1,464 records set at Cortland still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Cortland tied a daily record high maximum temperature of 13.3 C (55.9 F) on 18 December 2000.
About the Station
Location: New York, United States, 42.60 latitude, -76.18 longitude.
Elevation: 344 m (1,129 ft).
Period of record: 1895 to 2000, 106 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 Cortland. 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 Cortland, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
20.0 C (68.0 F)
-33.9 C (-29.0 F)
n/a
n/a
Feb
18.9 C (66.0 F)
-34.4 C (-29.9 F)
n/a
n/a
Mar
29.4 C (84.9 F)
-25.0 C (-13.0 F)
n/a
n/a
Apr
33.3 C (91.9 F)
-14.4 C (6.1 F)
n/a
n/a
May
34.4 C (93.9 F)
-5.0 C (23.0 F)
n/a
n/a
Jun
38.3 C (100.9 F)
-1.7 C (28.9 F)
n/a
n/a
Jul
38.9 C (102.0 F)
2.2 C (36.0 F)
n/a
n/a
Aug
37.8 C (100.0 F)
-0.6 C (30.9 F)
n/a
n/a
Sep
37.8 C (100.0 F)
-3.9 C (25.0 F)
n/a
n/a
Oct
33.3 C (91.9 F)
-11.7 C (10.9 F)
n/a
n/a
Nov
27.2 C (81.0 F)
-17.8 C (0.0 F)
n/a
n/a
Dec
20.0 C (68.0 F)
-34.4 C (-29.9 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Cortland still stand. 1931 holds the most, with 31.
Standing records at Cortland by the year they were set
Year set
Standing records
1895
14
1896
22
1897
12
1898
13
1899
17
1900
16
1901
1
1902
14
1903
21
1904
19
1905
16
1906
24
1907
20
1908
13
1909
11
1910
9
1911
20
1912
13
1913
20
1914
24
1915
9
1916
17
1917
16
1918
23
1919
26
1920
16
1921
15
1922
8
1923
12
1924
16
1925
16
1926
17
1927
15
1928
18
1929
18
1930
19
1931
31
1932
12
1933
24
1934
24
1935
10
1936
22
1937
11
1938
18
1939
10
1940
24
1941
20
1942
11
1943
15
1944
5
1945
14
1946
11
1947
16
1948
17
1949
10
1950
11
1951
19
1952
3
1953
18
1954
11
1955
4
1956
15
1957
8
1958
17
1959
14
1960
19
1961
16
1962
11
1963
23
1964
14
1965
23
1966
16
1967
13
1968
12
1969
4
1970
8
1971
7
1972
10
1973
8
1974
9
1975
10
1976
16
1977
7
1978
3
1979
24
1980
10
1981
7
1982
15
1983
6
1984
14
1985
3
1986
8
1987
15
1988
16
1989
6
1990
16
1991
11
1992
7
1993
9
1994
8
1995
10
1996
6
1997
8
1998
16
1999
8
2000
7
All-Time Record Progression
5 new records
5 all-time records were set at Cortland between 2 July 1931 and 14 March 1993. Each dot is a new record.
When Cortland set new all-time records
Date
Kind
Detail
1931-07-02
Record high maximum temperature
Record high maximum temperature 38.3 C (100.9 F)
1934-02-09
Record low maximum temperature
Record low maximum temperature -22.2 C (-8.0 F)
1935-07-08
Record daily precipitation
Record daily precipitation 194.8 mm (7.7 in)
1936-07-09
Record high maximum temperature
Record high maximum temperature 38.9 C (102.0 F)
1993-03-14
Record daily snowfall
Record daily snowfall 86.4 cm (34.0 in)
Wettest Day of Each Month
Jul: 194.8 mm (7.7 in)
The wettest day on record for each calendar month at Cortland. The most was 194.8 mm (7.7 in) on 8 July 1935.
Record daily precipitation for each month at Cortland
Month
Record daily precipitation (mm)
Date
Jan
53.3 mm (2.1 in)
29 January 1925
Feb
56.1 mm (2.2 in)
4 February 1961
Mar
48.5 mm (1.9 in)
23 March 1977
Apr
52.1 mm (2.1 in)
16 April 1983
May
66.0 mm (2.6 in)
28 May 1906
Jun
123.7 mm (4.9 in)
11 June 1922
Jul
194.8 mm (7.7 in)
8 July 1935
Aug
108.5 mm (4.3 in)
11 August 1938
Sep
79.2 mm (3.1 in)
29 September 1924
Oct
147.3 mm (5.8 in)
10 October 1903
Nov
81.5 mm (3.2 in)
9 November 1996
Dec
88.9 mm (3.5 in)
15 December 1901
Period of Record Coverage
1895 to 2000
Complete yearUnder 90 percent of days
106 years of record at Cortland, 1895 to 2000. 8 years have data for under 90 percent of days and are left out of rankings: 1895, 1901, 1903, 1911, 1945, 1946, 1947, 1999.
Cooler than the station meanWarmer than the station mean
One stripe for each of 97 complete years at Cortland, 1896 to 2000. Blue stripes are years cooler than the station's own mean of 8.0 C (46.5 F); red stripes are warmer. The coolest year was 1917, at 6.2 C (43.2 F), and the warmest was 1931, at 10.2 C (50.4 F). The strongest colour marks a difference of 2.2 C (4.0 F).
Annual mean temperature at Cortland as warming stripes, 1896 to 2000
Year
Annual mean temperature
Difference from the station mean
1896
7.5 C
-0.53 C
1897
7.8 C
-0.29 C
1898
8.8 C
+0.75 C
1899
8.1 C
+0.02 C
1900
9.6 C
+1.59 C
1902
8.3 C
+0.28 C
1904
6.5 C
-1.60 C
1905
7.7 C
-0.36 C
1906
8.1 C
+0.01 C
1907
6.5 C
-1.60 C
1908
8.4 C
+0.34 C
1909
7.5 C
-0.59 C
1910
8.4 C
+0.38 C
1912
7.9 C
-0.17 C
1913
9.5 C
+1.49 C
1914
7.6 C
-0.49 C
1915
8.0 C
-0.04 C
1916
7.7 C
-0.33 C
1917
6.2 C
-1.82 C
1918
7.7 C
-0.36 C
1919
8.6 C
+0.50 C
1920
7.4 C
-0.64 C
1922
9.1 C
+1.02 C
1923
7.9 C
-0.15 C
1924
7.3 C
-0.77 C
1925
8.0 C
-0.05 C
1926
6.9 C
-1.15 C
1927
8.6 C
+0.54 C
1928
9.0 C
+0.97 C
1929
8.8 C
+0.76 C
1930
9.6 C
+1.52 C
1931
10.2 C
+2.19 C
1932
9.4 C
+1.32 C
1933
9.6 C
+1.53 C
1934
8.4 C
+0.39 C
1935
8.1 C
+0.01 C
1936
8.5 C
+0.45 C
1937
8.9 C
+0.87 C
1938
9.5 C
+1.41 C
1939
8.7 C
+0.66 C
1940
6.6 C
-1.50 C
1941
8.6 C
+0.54 C
1942
8.7 C
+0.69 C
1943
7.2 C
-0.86 C
1944
7.9 C
-0.19 C
1945
8.1 C
+0.02 C
1946
8.4 C
+0.37 C
1947
7.7 C
-0.36 C
1948
7.3 C
-0.78 C
1949
9.0 C
+0.94 C
1950
7.5 C
-0.60 C
1951
7.5 C
-0.55 C
1952
7.8 C
-0.23 C
1953
8.8 C
+0.71 C
1954
7.8 C
-0.26 C
1955
7.7 C
-0.39 C
1956
6.8 C
-1.30 C
1957
8.0 C
-0.03 C
1959
8.1 C
+0.03 C
1960
6.7 C
-1.33 C
1961
7.5 C
-0.57 C
1962
7.2 C
-0.83 C
1964
8.2 C
+0.13 C
1965
7.1 C
-0.98 C
1966
7.2 C
-0.86 C
1967
7.8 C
-0.28 C
1968
7.7 C
-0.34 C
1969
7.9 C
-0.19 C
1970
7.7 C
-0.33 C
1971
7.7 C
-0.31 C
1972
6.6 C
-1.43 C
1973
8.2 C
+0.11 C
1974
7.5 C
-0.56 C
1975
8.7 C
+0.68 C
1976
7.2 C
-0.81 C
1977
8.0 C
-0.03 C
1978
7.2 C
-0.90 C
1979
8.0 C
-0.06 C
1980
7.5 C
-0.57 C
1981
8.0 C
-0.09 C
1982
8.1 C
+0.02 C
1983
8.6 C
+0.57 C
1984
8.4 C
+0.35 C
1986
8.7 C
+0.64 C
1987
9.1 C
+1.08 C
1988
8.7 C
+0.61 C
1989
8.1 C
+0.04 C
1990
9.5 C
+1.46 C
1991
9.2 C
+1.19 C
1992
7.5 C
-0.54 C
1993
7.5 C
-0.54 C
1994
7.5 C
-0.55 C
1995
8.0 C
-0.05 C
1996
7.6 C
-0.42 C
1997
7.4 C
-0.67 C
1998
9.9 C
+1.80 C
2000
8.0 C
-0.09 C
The fitted trend in annual mean temperature here over 1896 to 2000 is -0.01 C (-0.06 to 0.05) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.01 F (-0.11 to 0.09) per decade. The slope is a straight line fitted to 97 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Cortland
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.01 C (-0.06 to 0.05) per decade
-0.01 F (-0.11 to 0.09) per decade
1896 to 2000
97
Not clearly different from zero
Mean daily maximum
-0.01 C (-0.07 to 0.05) per decade
-0.02 F (-0.13 to 0.09) per decade
1896 to 2000
97
Not clearly different from zero
Mean daily minimum
0.00 C (-0.07 to 0.06) per decade
-0.01 F (-0.12 to 0.11) per decade
1896 to 2000
97
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
1895 to 2000
Yearly extremes at Cortland: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
38.9 C (102.0 F)
1936
34.4 C (93.9 F)
106
Coldest night (TNn)
-34.4 C (-29.9 F)
1917
-23.6 C (-10.5 F)
106
Wettest day (Rx1day)
194.8 mm (7.7 in)
1935
46.9 mm (1.8 in)
106
Wettest five days (Rx5day)
293.1 mm (11.5 in)
1935
72.7 mm (2.9 in)
106
Longest dry spell (CDD)
27 days
1963
15 days
106
Hottest day (TXx)
The hottest day of the year at Cortland, 1895 to 2000. The record is 38.9 C (102.0 F) in 1936, marked on the chart; the median year is 34.4 C (93.9 F).
Hottest day (TXx) at Cortland by year
Year
Hottest day (TXx)
1895
32.8 C (91.0 F)
1896
33.9 C (93.0 F)
1897
34.4 C (93.9 F)
1898
34.4 C (93.9 F)
1899
34.4 C (93.9 F)
1900
35.6 C (96.1 F)
1901
8.9 C (48.0 F)
1902
33.3 C (91.9 F)
1903
34.4 C (93.9 F)
1904
33.3 C (91.9 F)
1905
33.3 C (91.9 F)
1906
36.1 C (97.0 F)
1907
35.0 C (95.0 F)
1908
34.4 C (93.9 F)
1909
33.9 C (93.0 F)
1910
36.1 C (97.0 F)
1911
34.4 C (93.9 F)
1912
35.0 C (95.0 F)
1913
33.9 C (93.0 F)
1914
34.4 C (93.9 F)
1915
31.7 C (89.1 F)
1916
37.8 C (100.0 F)
1917
35.6 C (96.1 F)
1918
37.2 C (99.0 F)
1919
36.7 C (98.1 F)
1920
31.7 C (89.1 F)
1921
36.1 C (97.0 F)
1922
33.9 C (93.0 F)
1923
33.9 C (93.0 F)
1924
33.9 C (93.0 F)
1925
35.6 C (96.1 F)
1926
36.1 C (97.0 F)
1927
34.4 C (93.9 F)
1928
35.0 C (95.0 F)
1929
34.4 C (93.9 F)
1930
36.1 C (97.0 F)
1931
38.3 C (100.9 F)
1932
36.1 C (97.0 F)
1933
38.3 C (100.9 F)
1934
36.1 C (97.0 F)
1935
35.0 C (95.0 F)
1936
38.9 C (102.0 F)
1937
34.4 C (93.9 F)
1938
36.1 C (97.0 F)
1939
35.6 C (96.1 F)
1940
32.8 C (91.0 F)
1941
35.6 C (96.1 F)
1942
34.4 C (93.9 F)
1943
33.9 C (93.0 F)
1944
36.1 C (97.0 F)
1945
34.4 C (93.9 F)
1946
36.7 C (98.1 F)
1947
35.0 C (95.0 F)
1948
35.6 C (96.1 F)
1949
34.4 C (93.9 F)
1950
31.7 C (89.1 F)
1951
32.2 C (90.0 F)
1952
35.6 C (96.1 F)
1953
37.8 C (100.0 F)
1954
35.0 C (95.0 F)
1955
36.7 C (98.1 F)
1956
33.9 C (93.0 F)
1957
34.4 C (93.9 F)
1958
32.2 C (90.0 F)
1959
34.4 C (93.9 F)
1960
31.1 C (88.0 F)
1961
32.2 C (90.0 F)
1962
35.0 C (95.0 F)
1963
35.6 C (96.1 F)
1964
35.0 C (95.0 F)
1965
36.7 C (98.1 F)
1966
34.4 C (93.9 F)
1967
33.3 C (91.9 F)
1968
34.4 C (93.9 F)
1969
35.0 C (95.0 F)
1970
35.0 C (95.0 F)
1971
33.9 C (93.0 F)
1972
32.2 C (90.0 F)
1973
33.3 C (91.9 F)
1974
34.4 C (93.9 F)
1975
35.0 C (95.0 F)
1976
31.1 C (88.0 F)
1977
34.4 C (93.9 F)
1978
33.3 C (91.9 F)
1979
35.6 C (96.1 F)
1980
36.1 C (97.0 F)
1981
32.8 C (91.0 F)
1982
33.9 C (93.0 F)
1983
35.0 C (95.0 F)
1984
33.3 C (91.9 F)
1985
32.2 C (90.0 F)
1986
34.4 C (93.9 F)
1987
36.1 C (97.0 F)
1988
37.8 C (100.0 F)
1989
33.3 C (91.9 F)
1990
35.6 C (96.1 F)
1991
35.0 C (95.0 F)
1992
31.7 C (89.1 F)
1993
34.4 C (93.9 F)
1994
35.6 C (96.1 F)
1995
36.1 C (97.0 F)
1996
33.3 C (91.9 F)
1997
35.0 C (95.0 F)
1998
33.9 C (93.0 F)
1999
35.0 C (95.0 F)
2000
32.8 C (91.0 F)
Coldest night (TNn)
The coldest night of the year at Cortland, 1895 to 2000. The record is -34.4 C (-29.9 F) in 1917, marked on the chart; the median year is -23.6 C (-10.5 F).
Coldest night (TNn) at Cortland by year
Year
Coldest night (TNn)
1895
-21.7 C (-7.1 F)
1896
-33.3 C (-27.9 F)
1897
-21.1 C (-6.0 F)
1898
-22.8 C (-9.0 F)
1899
-28.9 C (-20.0 F)
1900
-20.0 C (-4.0 F)
1901
-25.6 C (-14.1 F)
1902
-23.3 C (-9.9 F)
1903
-25.0 C (-13.0 F)
1904
-33.9 C (-29.0 F)
1905
-25.6 C (-14.1 F)
1906
-29.4 C (-20.9 F)
1907
-32.8 C (-27.0 F)
1908
-26.1 C (-15.0 F)
1909
-22.8 C (-9.0 F)
1910
-24.4 C (-11.9 F)
1911
-20.6 C (-5.1 F)
1912
-28.9 C (-20.0 F)
1913
-21.7 C (-7.1 F)
1914
-30.0 C (-22.0 F)
1915
-19.4 C (-2.9 F)
1916
-25.0 C (-13.0 F)
1917
-34.4 C (-29.9 F)
1918
-28.9 C (-20.0 F)
1919
-25.6 C (-14.1 F)
1920
-29.4 C (-20.9 F)
1921
-21.1 C (-6.0 F)
1922
-27.8 C (-18.0 F)
1923
-25.0 C (-13.0 F)
1924
-23.3 C (-9.9 F)
1925
-31.1 C (-24.0 F)
1926
-21.7 C (-7.1 F)
1927
-25.0 C (-13.0 F)
1928
-21.7 C (-7.1 F)
1929
-18.9 C (-2.0 F)
1930
-17.8 C (0.0 F)
1931
-22.2 C (-8.0 F)
1932
-20.6 C (-5.1 F)
1933
-29.4 C (-20.9 F)
1934
-34.4 C (-29.9 F)
1935
-25.0 C (-13.0 F)
1936
-26.1 C (-15.0 F)
1937
-16.1 C (3.0 F)
1938
-25.6 C (-14.1 F)
1939
-21.7 C (-7.1 F)
1940
-22.2 C (-8.0 F)
1941
-22.8 C (-9.0 F)
1942
-28.3 C (-18.9 F)
1943
-27.8 C (-18.0 F)
1944
-21.7 C (-7.1 F)
1945
-21.7 C (-7.1 F)
1946
-21.7 C (-7.1 F)
1947
-19.4 C (-2.9 F)
1948
-27.8 C (-18.0 F)
1949
-18.9 C (-2.0 F)
1950
-23.3 C (-9.9 F)
1951
-21.7 C (-7.1 F)
1952
-18.9 C (-2.0 F)
1953
-17.8 C (0.0 F)
1954
-23.3 C (-9.9 F)
1955
-26.1 C (-15.0 F)
1956
-22.2 C (-8.0 F)
1957
-31.7 C (-25.1 F)
1958
-24.4 C (-11.9 F)
1959
-22.2 C (-8.0 F)
1960
-26.1 C (-15.0 F)
1961
-32.2 C (-26.0 F)
1962
-29.4 C (-20.9 F)
1963
-27.2 C (-17.0 F)
1964
-21.7 C (-7.1 F)
1965
-28.9 C (-20.0 F)
1966
-25.6 C (-14.1 F)
1967
-25.6 C (-14.1 F)
1968
-28.9 C (-20.0 F)
1969
-21.7 C (-7.1 F)
1970
-23.9 C (-11.0 F)
1971
-20.6 C (-5.1 F)
1972
-22.8 C (-9.0 F)
1973
-23.3 C (-9.9 F)
1974
-18.9 C (-2.0 F)
1975
-19.4 C (-2.9 F)
1976
-26.7 C (-16.1 F)
1977
-22.8 C (-9.0 F)
1978
-23.3 C (-9.9 F)
1979
-27.8 C (-18.0 F)
1980
-27.2 C (-17.0 F)
1981
-26.1 C (-15.0 F)
1982
-25.0 C (-13.0 F)
1983
-22.2 C (-8.0 F)
1984
-27.2 C (-17.0 F)
1985
-22.2 C (-8.0 F)
1986
-22.2 C (-8.0 F)
1987
-25.6 C (-14.1 F)
1988
-25.6 C (-14.1 F)
1989
-23.3 C (-9.9 F)
1990
-17.2 C (1.0 F)
1991
-19.4 C (-2.9 F)
1992
-21.7 C (-7.1 F)
1993
-25.0 C (-13.0 F)
1994
-27.8 C (-18.0 F)
1995
-20.6 C (-5.1 F)
1996
-27.2 C (-17.0 F)
1997
-23.9 C (-11.0 F)
1998
-17.2 C (1.0 F)
1999
-20.6 C (-5.1 F)
2000
-21.1 C (-6.0 F)
Wettest day (Rx1day)
The wettest day of the year at Cortland, 1895 to 2000. The record is 194.8 mm (7.7 in) in 1935, marked on the chart; the median year is 46.9 mm (1.8 in).
Wettest day (Rx1day) at Cortland by year
Year
Wettest day (Rx1day)
1895
39.4 mm (1.6 in)
1896
40.9 mm (1.6 in)
1897
25.9 mm (1.0 in)
1898
35.6 mm (1.4 in)
1899
37.3 mm (1.5 in)
1900
57.2 mm (2.3 in)
1901
88.9 mm (3.5 in)
1902
44.5 mm (1.8 in)
1903
147.3 mm (5.8 in)
1904
52.6 mm (2.1 in)
1905
43.2 mm (1.7 in)
1906
66.0 mm (2.6 in)
1907
31.5 mm (1.2 in)
1908
38.1 mm (1.5 in)
1909
36.8 mm (1.4 in)
1910
28.4 mm (1.1 in)
1911
44.7 mm (1.8 in)
1912
40.1 mm (1.6 in)
1913
43.2 mm (1.7 in)
1914
66.5 mm (2.6 in)
1915
48.5 mm (1.9 in)
1916
54.4 mm (2.1 in)
1917
56.1 mm (2.2 in)
1918
39.9 mm (1.6 in)
1919
44.5 mm (1.8 in)
1920
45.7 mm (1.8 in)
1921
61.0 mm (2.4 in)
1922
123.7 mm (4.9 in)
1923
62.0 mm (2.4 in)
1924
79.2 mm (3.1 in)
1925
53.3 mm (2.1 in)
1926
80.0 mm (3.1 in)
1927
52.6 mm (2.1 in)
1928
62.7 mm (2.5 in)
1929
45.2 mm (1.8 in)
1930
44.2 mm (1.7 in)
1931
38.1 mm (1.5 in)
1932
80.3 mm (3.2 in)
1933
55.9 mm (2.2 in)
1934
56.1 mm (2.2 in)
1935
194.8 mm (7.7 in)
1936
45.0 mm (1.8 in)
1937
81.3 mm (3.2 in)
1938
108.5 mm (4.3 in)
1939
31.8 mm (1.3 in)
1940
42.4 mm (1.7 in)
1941
34.5 mm (1.4 in)
1942
52.6 mm (2.1 in)
1943
52.1 mm (2.1 in)
1944
50.8 mm (2.0 in)
1945
51.3 mm (2.0 in)
1946
53.8 mm (2.1 in)
1947
78.0 mm (3.1 in)
1948
59.4 mm (2.3 in)
1949
52.8 mm (2.1 in)
1950
40.6 mm (1.6 in)
1951
24.4 mm (1.0 in)
1952
58.9 mm (2.3 in)
1953
35.6 mm (1.4 in)
1954
78.7 mm (3.1 in)
1955
71.1 mm (2.8 in)
1956
47.8 mm (1.9 in)
1957
42.7 mm (1.7 in)
1958
51.1 mm (2.0 in)
1959
54.4 mm (2.1 in)
1960
46.5 mm (1.8 in)
1961
56.1 mm (2.2 in)
1962
39.6 mm (1.6 in)
1963
42.2 mm (1.7 in)
1964
35.8 mm (1.4 in)
1965
24.1 mm (0.9 in)
1966
48.8 mm (1.9 in)
1967
55.4 mm (2.2 in)
1968
44.2 mm (1.7 in)
1969
62.5 mm (2.5 in)
1970
42.2 mm (1.7 in)
1971
41.4 mm (1.6 in)
1972
61.2 mm (2.4 in)
1973
47.2 mm (1.9 in)
1974
37.6 mm (1.5 in)
1975
77.5 mm (3.1 in)
1976
42.7 mm (1.7 in)
1977
48.5 mm (1.9 in)
1978
42.4 mm (1.7 in)
1979
31.8 mm (1.3 in)
1980
63.8 mm (2.5 in)
1981
87.4 mm (3.4 in)
1982
41.9 mm (1.6 in)
1983
52.1 mm (2.1 in)
1984
49.0 mm (1.9 in)
1985
36.1 mm (1.4 in)
1986
43.2 mm (1.7 in)
1987
39.6 mm (1.6 in)
1988
53.8 mm (2.1 in)
1989
58.2 mm (2.3 in)
1990
41.7 mm (1.6 in)
1991
39.4 mm (1.6 in)
1992
36.8 mm (1.4 in)
1993
40.6 mm (1.6 in)
1994
68.6 mm (2.7 in)
1995
43.9 mm (1.7 in)
1996
81.5 mm (3.2 in)
1997
35.8 mm (1.4 in)
1998
36.3 mm (1.4 in)
1999
28.2 mm (1.1 in)
2000
43.4 mm (1.7 in)
Wettest five days (Rx5day)
The wettest five days of the year at Cortland, 1895 to 2000. The record is 293.1 mm (11.5 in) in 1935, marked on the chart; the median year is 72.7 mm (2.9 in).
Wettest five days (Rx5day) at Cortland by year
Year
Wettest five days (Rx5day)
1895
72.7 mm (2.9 in)
1896
58.3 mm (2.3 in)
1897
56.2 mm (2.2 in)
1898
67.3 mm (2.6 in)
1899
82.0 mm (3.2 in)
1900
118.2 mm (4.7 in)
1901
88.9 mm (3.5 in)
1902
128.2 mm (5.0 in)
1903
203.2 mm (8.0 in)
1904
98.8 mm (3.9 in)
1905
69.9 mm (2.8 in)
1906
76.0 mm (3.0 in)
1907
72.9 mm (2.9 in)
1908
49.6 mm (2.0 in)
1909
51.4 mm (2.0 in)
1910
60.7 mm (2.4 in)
1911
64.6 mm (2.5 in)
1912
60.5 mm (2.4 in)
1913
86.8 mm (3.4 in)
1914
71.8 mm (2.8 in)
1915
80.3 mm (3.2 in)
1916
60.3 mm (2.4 in)
1917
84.3 mm (3.3 in)
1918
62.5 mm (2.5 in)
1919
55.9 mm (2.2 in)
1920
73.7 mm (2.9 in)
1921
109.3 mm (4.3 in)
1922
138.7 mm (5.5 in)
1923
66.8 mm (2.6 in)
1924
99.5 mm (3.9 in)
1925
96.5 mm (3.8 in)
1926
99.3 mm (3.9 in)
1927
87.1 mm (3.4 in)
1928
66.7 mm (2.6 in)
1929
90.4 mm (3.6 in)
1930
91.4 mm (3.6 in)
1931
48.2 mm (1.9 in)
1932
87.9 mm (3.5 in)
1933
90.9 mm (3.6 in)
1934
45.7 mm (1.8 in)
1935
293.1 mm (11.5 in)
1936
94.5 mm (3.7 in)
1937
98.9 mm (3.9 in)
1938
108.5 mm (4.3 in)
1939
52.3 mm (2.1 in)
1940
74.2 mm (2.9 in)
1941
64.2 mm (2.5 in)
1942
138.5 mm (5.5 in)
1943
139.0 mm (5.5 in)
1944
68.4 mm (2.7 in)
1945
66.8 mm (2.6 in)
1946
64.3 mm (2.5 in)
1947
94.5 mm (3.7 in)
1948
66.1 mm (2.6 in)
1949
89.4 mm (3.5 in)
1950
79.4 mm (3.1 in)
1951
46.8 mm (1.8 in)
1952
72.6 mm (2.9 in)
1953
60.7 mm (2.4 in)
1954
101.0 mm (4.0 in)
1955
111.7 mm (4.4 in)
1956
67.9 mm (2.7 in)
1957
60.5 mm (2.4 in)
1958
59.4 mm (2.3 in)
1959
103.7 mm (4.1 in)
1960
95.8 mm (3.8 in)
1961
83.5 mm (3.3 in)
1962
54.9 mm (2.2 in)
1963
56.4 mm (2.2 in)
1964
51.8 mm (2.0 in)
1965
43.2 mm (1.7 in)
1966
64.7 mm (2.5 in)
1967
64.0 mm (2.5 in)
1968
86.6 mm (3.4 in)
1969
96.6 mm (3.8 in)
1970
66.6 mm (2.6 in)
1971
69.2 mm (2.7 in)
1972
117.5 mm (4.6 in)
1973
70.9 mm (2.8 in)
1974
68.6 mm (2.7 in)
1975
123.2 mm (4.9 in)
1976
91.5 mm (3.6 in)
1977
142.1 mm (5.6 in)
1978
76.7 mm (3.0 in)
1979
64.5 mm (2.5 in)
1980
72.0 mm (2.8 in)
1981
125.5 mm (4.9 in)
1982
67.5 mm (2.7 in)
1983
85.7 mm (3.4 in)
1984
68.9 mm (2.7 in)
1985
56.4 mm (2.2 in)
1986
81.5 mm (3.2 in)
1987
51.1 mm (2.0 in)
1988
68.3 mm (2.7 in)
1989
93.4 mm (3.7 in)
1990
57.5 mm (2.3 in)
1991
50.0 mm (2.0 in)
1992
69.6 mm (2.7 in)
1993
66.5 mm (2.6 in)
1994
116.4 mm (4.6 in)
1995
76.0 mm (3.0 in)
1996
88.7 mm (3.5 in)
1997
52.1 mm (2.1 in)
1998
65.5 mm (2.6 in)
1999
54.3 mm (2.1 in)
2000
88.6 mm (3.5 in)
Longest dry spell (CDD)
The longest dry spell of the year at Cortland, 1895 to 2000. The record is 27 days in 1963, marked on the chart; the median year is 15 days.
Longest dry spell (CDD) at Cortland by year
Year
Longest dry spell (CDD)
1895
12 days
1896
10 days
1897
16 days
1898
13 days
1899
17 days
1900
20 days
1901
21 days
1902
16 days
1903
18 days
1904
15 days
1905
14 days
1906
11 days
1907
21 days
1908
21 days
1909
17 days
1910
19 days
1911
14 days
1912
10 days
1913
19 days
1914
17 days
1915
14 days
1916
13 days
1917
19 days
1918
14 days
1919
11 days
1920
12 days
1921
11 days
1922
22 days
1923
18 days
1924
23 days
1925
13 days
1926
8 days
1927
15 days
1928
15 days
1929
11 days
1930
13 days
1931
11 days
1932
11 days
1933
13 days
1934
20 days
1935
17 days
1936
20 days
1937
10 days
1938
19 days
1939
20 days
1940
11 days
1941
16 days
1942
11 days
1943
13 days
1944
15 days
1945
11 days
1946
10 days
1947
14 days
1948
8 days
1949
25 days
1950
16 days
1951
16 days
1952
17 days
1953
18 days
1954
12 days
1955
14 days
1956
14 days
1957
13 days
1958
10 days
1959
14 days
1960
9 days
1961
17 days
1962
17 days
1963
27 days
1964
15 days
1965
10 days
1966
19 days
1967
14 days
1968
13 days
1969
20 days
1970
11 days
1971
17 days
1972
17 days
1973
13 days
1974
17 days
1975
19 days
1976
15 days
1977
14 days
1978
13 days
1979
10 days
1980
15 days
1981
10 days
1982
14 days
1983
23 days
1984
15 days
1985
16 days
1986
19 days
1987
22 days
1988
13 days
1989
15 days
1990
12 days
1991
18 days
1992
11 days
1993
13 days
1994
12 days
1995
15 days
1996
11 days
1997
18 days
1998
17 days
1999
15 days
2000
12 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
97 years with a frost
Across 97 years with a frost, the median last spring frost at Cortland falls on 11 May and the median first autumn frost on 2 October, which leaves a median of 145 days between them.
In 1969 to 2000 the median growing season was 161 days. That is 26 days more than in 1896 to 1929.
Fitted over all years, the growing season changes by +3.1 days per decade at this station.
Frost dates and growing season at Cortland
Measure
Median, all years
Earliest period (1896 to 1929)
Recent period (1969 to 2000)
Recent against earliest
Fitted trend
Last spring frost
11 May
15 May
1 May
14 days earlier
-1.7 days per decade
First autumn frost
2 October
28 September
10 October
12 days later
+1.4 days per decade
Growing days
145 days
135 days
161 days
26 days more
+3.1 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
93 years, 1896 to 2000
A day with at least 46.6 mm (1.8 in) of rain is expected about once in 2 years. A day with at least 149.7 mm (5.9 in) of rain is expected about once in 100 years.
Rainfall return levels at Cortland: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
46.6 mm (1.8 in)
5 years
62.9 mm (2.5 in)
10 years
77.1 mm (3.0 in)
25 years
100.4 mm (4.0 in)
50 years
122.5 mm (4.8 in)
100 years
149.7 mm (5.9 in)
Longer than the 93 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, 93 years of values from 1896 to 2000.
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: 194.8 mm (7.7 in) in 1935; 147.3 mm (5.8 in) in 1903; 123.7 mm (4.9 in) in 1922.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Cortland standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Cortland 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.