Record envelope, standing records and threshold days for Penn Yan (USC00306510), New York, United States, with 105 years of record.
Key Facts for Penn Yan
Penn Yan (USC00306510) is a weather station in New York, United States at 42.67 latitude and -77.06 longitude, 253 m (830 ft) above sea level.
The station reports from 1897 to 2001, 105 years of record.
1,464 records set at Penn Yan still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Penn Yan tied a daily record low maximum temperature of 21.7 C (71.1 F) on 31 July 2001.
About the Station
Location: New York, United States, 42.67 latitude, -77.06 longitude.
Elevation: 253 m (830 ft).
Period of record: 1897 to 2001, 105 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 Penn Yan. 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 Penn Yan, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
21.7 C (71.1 F)
-29.4 C (-20.9 F)
n/a
n/a
Feb
20.0 C (68.0 F)
-31.7 C (-25.1 F)
n/a
n/a
Mar
28.9 C (84.0 F)
-23.3 C (-9.9 F)
n/a
n/a
Apr
31.7 C (89.1 F)
-13.9 C (7.0 F)
n/a
n/a
May
33.3 C (91.9 F)
-9.4 C (15.1 F)
n/a
n/a
Jun
37.8 C (100.0 F)
-1.1 C (30.0 F)
n/a
n/a
Jul
41.1 C (106.0 F)
2.8 C (37.0 F)
n/a
n/a
Aug
37.8 C (100.0 F)
2.2 C (36.0 F)
n/a
n/a
Sep
37.2 C (99.0 F)
-3.9 C (25.0 F)
n/a
n/a
Oct
33.9 C (93.0 F)
-7.8 C (18.0 F)
n/a
n/a
Nov
26.7 C (80.1 F)
-18.3 C (-0.9 F)
n/a
n/a
Dec
20.6 C (69.1 F)
-27.2 C (-17.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Penn Yan still stand. 1934 holds the most, with 45.
Standing records at Penn Yan by the year they were set
Year set
Standing records
1897
6
1898
23
1899
40
1900
32
1901
21
1902
15
1903
28
1904
8
1907
6
1908
20
1909
23
1917
34
1918
44
1919
26
1920
10
1921
19
1922
10
1923
25
1927
18
1928
20
1929
35
1930
29
1931
20
1932
20
1933
34
1934
45
1935
24
1936
40
1937
11
1938
31
1939
15
1940
26
1941
20
1942
23
1943
21
1944
20
1945
30
1946
20
1947
24
1948
27
1949
20
1950
7
1951
11
1952
7
1953
18
1954
19
1955
14
1956
14
1957
19
1958
5
1959
20
1960
10
1961
8
1962
13
1963
17
1964
14
1965
14
1966
10
1967
11
1968
12
1969
2
1970
9
1971
6
1972
13
1973
5
1974
7
1975
6
1976
15
1977
14
1978
19
1979
19
1980
11
1981
11
1982
16
1983
14
1984
3
1997
8
1998
17
1999
14
2000
41
2001
8
All-Time Record Progression
5 new records
5 all-time records were set at Penn Yan between 15 February 1943 and 31 July 2000. Each dot is a new record.
When Penn Yan set new all-time records
Date
Kind
Detail
1943-02-15
Record low maximum temperature
Record low maximum temperature -19.4 C (-2.9 F)
1948-08-29
Record high minimum temperature
Record high minimum temperature 28.3 C (82.9 F)
1962-10-12
Record daily precipitation
Record daily precipitation 111.8 mm (4.4 in)
1978-02-08
Record snow depth
Record snow depth 76.2 cm (30.0 in)
2000-07-31
Record daily precipitation
Record daily precipitation 115.3 mm (4.5 in)
Wettest Day of Each Month
Jul: 115.3 mm (4.5 in)
The wettest day on record for each calendar month at Penn Yan. The most was 115.3 mm (4.5 in) on 31 July 2000.
Record daily precipitation for each month at Penn Yan
Month
Record daily precipitation (mm)
Date
Jan
44.5 mm (1.8 in)
8 January 1998
Feb
50.8 mm (2.0 in)
14 February 1940
Mar
72.1 mm (2.8 in)
1 March 1900
Apr
51.6 mm (2.0 in)
5 April 1941
May
83.8 mm (3.3 in)
5 May 1917
Jun
95.3 mm (3.8 in)
21 June 1972
Jul
115.3 mm (4.5 in)
31 July 2000
Aug
108.2 mm (4.3 in)
10 August 1938
Sep
81.0 mm (3.2 in)
6 September 1979
Oct
111.8 mm (4.4 in)
12 October 1962
Nov
63.2 mm (2.5 in)
26 November 1900
Dec
63.5 mm (2.5 in)
9 December 1957
Period of Record Coverage
1897 to 2001
Complete yearUnder 90 percent of days
81 years of record at Penn Yan, 1897 to 2001. 20 years have data for under 90 percent of days and are left out of rankings: 1897, 1904, 1907, 1917, 1919, 1920, 1921, 1923 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 55 complete years at Penn Yan, 1898 to 2000. Blue stripes are years cooler than the station's own mean of 9.2 C (48.5 F); red stripes are warmer. The coolest year was 1978, at 7.4 C (45.2 F), and the warmest was 1953, at 10.7 C (51.3 F). The strongest colour marks a difference of 1.9 C (3.4 F).
Annual mean temperature at Penn Yan as warming stripes, 1898 to 2000
Year
Annual mean temperature
Difference from the station mean
1898
10.2 C
+1.03 C
1899
9.4 C
+0.23 C
1900
10.0 C
+0.79 C
1901
8.7 C
-0.44 C
1902
8.7 C
-0.47 C
1903
8.9 C
-0.27 C
1908
9.1 C
-0.06 C
1919
8.9 C
-0.32 C
1922
9.7 C
+0.47 C
1929
7.8 C
-1.39 C
1930
8.4 C
-0.75 C
1933
9.0 C
-0.14 C
1934
8.1 C
-1.13 C
1935
7.6 C
-1.57 C
1936
8.0 C
-1.22 C
1937
9.1 C
-0.11 C
1938
9.6 C
+0.40 C
1939
9.3 C
+0.14 C
1940
7.8 C
-1.43 C
1941
9.9 C
+0.75 C
1942
9.4 C
+0.19 C
1943
8.5 C
-0.70 C
1944
9.4 C
+0.25 C
1945
8.7 C
-0.44 C
1947
9.8 C
+0.61 C
1948
9.9 C
+0.73 C
1951
9.5 C
+0.35 C
1952
10.3 C
+1.08 C
1953
10.7 C
+1.56 C
1954
10.0 C
+0.80 C
1955
10.3 C
+1.09 C
1956
8.7 C
-0.46 C
1957
10.0 C
+0.85 C
1958
8.6 C
-0.57 C
1959
10.2 C
+0.97 C
1960
9.4 C
+0.26 C
1961
9.8 C
+0.58 C
1962
9.3 C
+0.10 C
1963
9.4 C
+0.18 C
1964
10.1 C
+0.91 C
1966
9.3 C
+0.11 C
1967
8.8 C
-0.40 C
1968
9.0 C
-0.21 C
1970
9.5 C
+0.27 C
1971
9.5 C
+0.36 C
1972
8.5 C
-0.68 C
1977
9.4 C
+0.22 C
1978
7.4 C
-1.82 C
1979
9.1 C
-0.08 C
1980
8.8 C
-0.36 C
1982
9.1 C
-0.09 C
1983
9.9 C
+0.71 C
1998
10.0 C
+0.82 C
1999
8.8 C
-0.35 C
2000
7.9 C
-1.24 C
The fitted trend in annual mean temperature here over 1898 to 2000 is 0.01 C (-0.07 to 0.09) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.01 F (-0.13 to 0.15) per decade. The slope is a straight line fitted to 55 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Penn Yan
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.01 C (-0.07 to 0.09) per decade
0.01 F (-0.13 to 0.15) per decade
1898 to 2000
55
Not clearly different from zero
Mean daily maximum
-0.01 C (-0.09 to 0.07) per decade
-0.02 F (-0.17 to 0.13) per decade
1898 to 2000
55
Not clearly different from zero
Mean daily minimum
0.02 C (-0.08 to 0.13) per decade
0.04 F (-0.15 to 0.23) per decade
1898 to 2000
55
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
1897 to 2001
Yearly extremes at Penn Yan: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
41.1 C (106.0 F)
1936
35.0 C (95.0 F)
81
Coldest night (TNn)
-31.7 C (-25.1 F)
1934
-21.7 C (-7.1 F)
81
Wettest day (Rx1day)
115.3 mm (4.5 in)
2000
45.5 mm (1.8 in)
81
Wettest five days (Rx5day)
218.0 mm (8.6 in)
1972
71.9 mm (2.8 in)
81
Longest dry spell (CDD)
35 days
2000
16 days
81
Hottest day (TXx)
The hottest day of the year at Penn Yan, 1897 to 2001. The record is 41.1 C (106.0 F) in 1936, marked on the chart; the median year is 35.0 C (95.0 F).
Hottest day (TXx) at Penn Yan by year
Year
Hottest day (TXx)
1897
35.0 C (95.0 F)
1898
36.7 C (98.1 F)
1899
37.2 C (99.0 F)
1900
37.2 C (99.0 F)
1901
35.6 C (96.1 F)
1902
32.2 C (90.0 F)
1903
35.0 C (95.0 F)
1904
13.9 C (57.0 F)
1907
35.6 C (96.1 F)
1908
35.0 C (95.0 F)
1909
36.7 C (98.1 F)
1917
33.3 C (91.9 F)
1918
36.7 C (98.1 F)
1919
34.4 C (93.9 F)
1920
23.9 C (75.0 F)
1921
36.7 C (98.1 F)
1922
34.4 C (93.9 F)
1923
35.0 C (95.0 F)
1927
35.6 C (96.1 F)
1928
35.0 C (95.0 F)
1929
35.0 C (95.0 F)
1930
37.2 C (99.0 F)
1931
38.9 C (102.0 F)
1932
36.7 C (98.1 F)
1933
37.2 C (99.0 F)
1934
37.8 C (100.0 F)
1935
34.4 C (93.9 F)
1936
41.1 C (106.0 F)
1937
35.0 C (95.0 F)
1938
33.9 C (93.0 F)
1939
36.1 C (97.0 F)
1940
34.4 C (93.9 F)
1941
36.1 C (97.0 F)
1942
33.9 C (93.0 F)
1943
33.9 C (93.0 F)
1944
37.2 C (99.0 F)
1945
33.9 C (93.0 F)
1946
34.4 C (93.9 F)
1947
36.7 C (98.1 F)
1948
37.8 C (100.0 F)
1949
37.8 C (100.0 F)
1950
35.6 C (96.1 F)
1951
33.9 C (93.0 F)
1952
36.7 C (98.1 F)
1953
36.7 C (98.1 F)
1954
34.4 C (93.9 F)
1955
37.8 C (100.0 F)
1956
34.4 C (93.9 F)
1957
35.0 C (95.0 F)
1958
32.2 C (90.0 F)
1959
35.6 C (96.1 F)
1960
32.8 C (91.0 F)
1961
32.8 C (91.0 F)
1962
34.4 C (93.9 F)
1963
36.7 C (98.1 F)
1964
35.6 C (96.1 F)
1965
37.8 C (100.0 F)
1966
37.2 C (99.0 F)
1967
33.3 C (91.9 F)
1968
33.9 C (93.0 F)
1969
33.3 C (91.9 F)
1970
32.8 C (91.0 F)
1971
33.9 C (93.0 F)
1972
33.3 C (91.9 F)
1973
35.0 C (95.0 F)
1974
35.0 C (95.0 F)
1975
34.4 C (93.9 F)
1976
32.2 C (90.0 F)
1977
35.6 C (96.1 F)
1978
35.6 C (96.1 F)
1979
33.3 C (91.9 F)
1980
34.4 C (93.9 F)
1981
32.2 C (90.0 F)
1982
33.9 C (93.0 F)
1983
35.6 C (96.1 F)
1984
18.3 C (64.9 F)
1997
33.3 C (91.9 F)
1998
31.7 C (89.1 F)
1999
34.4 C (93.9 F)
2000
31.1 C (88.0 F)
2001
32.8 C (91.0 F)
Coldest night (TNn)
The coldest night of the year at Penn Yan, 1897 to 2001. The record is -31.7 C (-25.1 F) in 1934, marked on the chart; the median year is -21.7 C (-7.1 F).
Coldest night (TNn) at Penn Yan by year
Year
Coldest night (TNn)
1897
-16.7 C (1.9 F)
1898
-19.4 C (-2.9 F)
1899
-23.3 C (-9.9 F)
1900
-23.3 C (-9.9 F)
1901
-20.0 C (-4.0 F)
1902
-20.0 C (-4.0 F)
1903
-19.4 C (-2.9 F)
1904
-26.1 C (-15.0 F)
1907
-11.1 C (12.0 F)
1908
-27.2 C (-17.0 F)
1909
-22.2 C (-8.0 F)
1917
-26.7 C (-16.1 F)
1918
-30.6 C (-23.1 F)
1919
-25.0 C (-13.0 F)
1920
-27.8 C (-18.0 F)
1921
-18.3 C (-0.9 F)
1922
-23.3 C (-9.9 F)
1923
-25.0 C (-13.0 F)
1927
-16.7 C (1.9 F)
1928
-22.2 C (-8.0 F)
1929
-23.9 C (-11.0 F)
1930
-23.3 C (-9.9 F)
1931
-26.1 C (-15.0 F)
1932
-21.1 C (-6.0 F)
1933
-27.2 C (-17.0 F)
1934
-31.7 C (-25.1 F)
1935
-27.2 C (-17.0 F)
1936
-26.1 C (-15.0 F)
1937
-15.0 C (5.0 F)
1938
-25.6 C (-14.1 F)
1939
-20.0 C (-4.0 F)
1940
-22.2 C (-8.0 F)
1941
-20.0 C (-4.0 F)
1942
-25.6 C (-14.1 F)
1943
-29.4 C (-20.9 F)
1944
-20.6 C (-5.1 F)
1945
-21.7 C (-7.1 F)
1946
-20.0 C (-4.0 F)
1947
-16.7 C (1.9 F)
1948
-25.0 C (-13.0 F)
1949
-16.1 C (3.0 F)
1950
-18.9 C (-2.0 F)
1951
-21.1 C (-6.0 F)
1952
-18.3 C (-0.9 F)
1953
-14.4 C (6.1 F)
1954
-18.3 C (-0.9 F)
1955
-21.7 C (-7.1 F)
1956
-18.3 C (-0.9 F)
1957
-29.4 C (-20.9 F)
1958
-21.1 C (-6.0 F)
1959
-20.6 C (-5.1 F)
1960
-17.8 C (0.0 F)
1961
-25.6 C (-14.1 F)
1962
-23.3 C (-9.9 F)
1963
-22.8 C (-9.0 F)
1964
-17.8 C (0.0 F)
1965
-21.7 C (-7.1 F)
1966
-20.6 C (-5.1 F)
1967
-20.6 C (-5.1 F)
1968
-25.6 C (-14.1 F)
1969
-18.9 C (-2.0 F)
1970
-21.7 C (-7.1 F)
1971
-21.1 C (-6.0 F)
1972
-21.7 C (-7.1 F)
1973
-18.9 C (-2.0 F)
1974
-17.8 C (0.0 F)
1975
-17.8 C (0.0 F)
1976
-24.4 C (-11.9 F)
1977
-23.9 C (-11.0 F)
1978
-22.2 C (-8.0 F)
1979
-27.2 C (-17.0 F)
1980
-24.4 C (-11.9 F)
1981
-23.9 C (-11.0 F)
1982
-23.9 C (-11.0 F)
1983
-18.9 C (-2.0 F)
1984
-23.3 C (-9.9 F)
1997
-12.2 C (10.0 F)
1998
-18.3 C (-0.9 F)
1999
-21.1 C (-6.0 F)
2000
-20.6 C (-5.1 F)
2001
-14.4 C (6.1 F)
Wettest day (Rx1day)
The wettest day of the year at Penn Yan, 1897 to 2001. The record is 115.3 mm (4.5 in) in 2000, marked on the chart; the median year is 45.5 mm (1.8 in).
Wettest day (Rx1day) at Penn Yan by year
Year
Wettest day (Rx1day)
1897
21.8 mm (0.9 in)
1898
43.9 mm (1.7 in)
1899
36.1 mm (1.4 in)
1900
72.1 mm (2.8 in)
1901
59.9 mm (2.4 in)
1902
42.4 mm (1.7 in)
1903
70.1 mm (2.8 in)
1904
21.1 mm (0.8 in)
1907
25.4 mm (1.0 in)
1908
31.5 mm (1.2 in)
1909
38.1 mm (1.5 in)
1917
83.8 mm (3.3 in)
1918
39.4 mm (1.6 in)
1919
48.3 mm (1.9 in)
1920
15.2 mm (0.6 in)
1921
28.4 mm (1.1 in)
1922
77.5 mm (3.1 in)
1923
57.7 mm (2.3 in)
1927
38.6 mm (1.5 in)
1928
45.5 mm (1.8 in)
1929
38.6 mm (1.5 in)
1930
45.7 mm (1.8 in)
1931
41.1 mm (1.6 in)
1932
43.9 mm (1.7 in)
1933
64.8 mm (2.6 in)
1934
29.5 mm (1.2 in)
1935
103.6 mm (4.1 in)
1936
31.0 mm (1.2 in)
1937
62.2 mm (2.4 in)
1938
108.2 mm (4.3 in)
1939
43.9 mm (1.7 in)
1940
50.8 mm (2.0 in)
1941
57.4 mm (2.3 in)
1942
48.3 mm (1.9 in)
1943
36.8 mm (1.4 in)
1944
46.7 mm (1.8 in)
1945
64.8 mm (2.6 in)
1946
46.5 mm (1.8 in)
1947
33.8 mm (1.3 in)
1948
35.6 mm (1.4 in)
1949
73.7 mm (2.9 in)
1950
67.1 mm (2.6 in)
1951
41.7 mm (1.6 in)
1952
48.0 mm (1.9 in)
1953
52.1 mm (2.1 in)
1954
27.2 mm (1.1 in)
1955
99.1 mm (3.9 in)
1956
55.9 mm (2.2 in)
1957
76.2 mm (3.0 in)
1958
33.0 mm (1.3 in)
1959
62.7 mm (2.5 in)
1960
56.9 mm (2.2 in)
1961
58.4 mm (2.3 in)
1962
111.8 mm (4.4 in)
1963
46.0 mm (1.8 in)
1964
35.1 mm (1.4 in)
1965
22.1 mm (0.9 in)
1966
41.9 mm (1.6 in)
1967
40.6 mm (1.6 in)
1968
38.1 mm (1.5 in)
1969
32.5 mm (1.3 in)
1970
45.2 mm (1.8 in)
1971
31.8 mm (1.3 in)
1972
95.3 mm (3.8 in)
1973
41.1 mm (1.6 in)
1974
35.6 mm (1.4 in)
1975
65.3 mm (2.6 in)
1976
38.6 mm (1.5 in)
1977
58.4 mm (2.3 in)
1978
46.2 mm (1.8 in)
1979
81.0 mm (3.2 in)
1980
56.6 mm (2.2 in)
1981
68.6 mm (2.7 in)
1982
64.8 mm (2.6 in)
1983
34.5 mm (1.4 in)
1984
14.7 mm (0.6 in)
1997
35.6 mm (1.4 in)
1998
44.5 mm (1.8 in)
1999
76.2 mm (3.0 in)
2000
115.3 mm (4.5 in)
2001
38.1 mm (1.5 in)
Wettest five days (Rx5day)
The wettest five days of the year at Penn Yan, 1897 to 2001. The record is 218.0 mm (8.6 in) in 1972, marked on the chart; the median year is 71.9 mm (2.8 in).
Wettest five days (Rx5day) at Penn Yan by year
Year
Wettest five days (Rx5day)
1897
32.7 mm (1.3 in)
1898
45.0 mm (1.8 in)
1899
71.9 mm (2.8 in)
1900
116.0 mm (4.6 in)
1901
83.3 mm (3.3 in)
1902
91.4 mm (3.6 in)
1903
80.5 mm (3.2 in)
1904
43.2 mm (1.7 in)
1907
43.2 mm (1.7 in)
1908
53.0 mm (2.1 in)
1909
69.3 mm (2.7 in)
1917
83.8 mm (3.3 in)
1918
88.9 mm (3.5 in)
1919
68.1 mm (2.7 in)
1920
17.0 mm (0.7 in)
1921
56.9 mm (2.2 in)
1922
116.9 mm (4.6 in)
1923
58.5 mm (2.3 in)
1927
88.7 mm (3.5 in)
1928
51.1 mm (2.0 in)
1929
53.4 mm (2.1 in)
1930
51.6 mm (2.0 in)
1931
45.5 mm (1.8 in)
1932
112.4 mm (4.4 in)
1933
34.6 mm (1.4 in)
1934
32.7 mm (1.3 in)
1935
192.0 mm (7.6 in)
1936
71.6 mm (2.8 in)
1937
78.8 mm (3.1 in)
1938
109.7 mm (4.3 in)
1939
85.3 mm (3.4 in)
1940
74.0 mm (2.9 in)
1941
86.1 mm (3.4 in)
1942
73.4 mm (2.9 in)
1943
84.6 mm (3.3 in)
1944
60.5 mm (2.4 in)
1945
109.8 mm (4.3 in)
1946
61.0 mm (2.4 in)
1947
47.8 mm (1.9 in)
1948
44.5 mm (1.8 in)
1949
77.5 mm (3.1 in)
1950
97.9 mm (3.9 in)
1951
74.4 mm (2.9 in)
1952
75.9 mm (3.0 in)
1953
67.0 mm (2.6 in)
1954
41.8 mm (1.6 in)
1955
170.4 mm (6.7 in)
1956
77.3 mm (3.0 in)
1957
146.1 mm (5.8 in)
1958
46.7 mm (1.8 in)
1959
81.2 mm (3.2 in)
1960
74.9 mm (2.9 in)
1961
63.3 mm (2.5 in)
1962
132.9 mm (5.2 in)
1963
76.5 mm (3.0 in)
1964
53.4 mm (2.1 in)
1965
35.1 mm (1.4 in)
1966
60.5 mm (2.4 in)
1967
71.1 mm (2.8 in)
1968
71.5 mm (2.8 in)
1969
71.2 mm (2.8 in)
1970
86.3 mm (3.4 in)
1971
48.3 mm (1.9 in)
1972
218.0 mm (8.6 in)
1973
41.1 mm (1.6 in)
1974
57.6 mm (2.3 in)
1975
110.3 mm (4.3 in)
1976
79.3 mm (3.1 in)
1977
119.3 mm (4.7 in)
1978
61.0 mm (2.4 in)
1979
97.8 mm (3.9 in)
1980
80.3 mm (3.2 in)
1981
94.5 mm (3.7 in)
1982
65.6 mm (2.6 in)
1983
55.7 mm (2.2 in)
1984
25.9 mm (1.0 in)
1997
46.7 mm (1.8 in)
1998
77.9 mm (3.1 in)
1999
90.7 mm (3.6 in)
2000
163.0 mm (6.4 in)
2001
40.9 mm (1.6 in)
Longest dry spell (CDD)
The longest dry spell of the year at Penn Yan, 1897 to 2001. The record is 35 days in 2000, marked on the chart; the median year is 16 days.
Longest dry spell (CDD) at Penn Yan by year
Year
Longest dry spell (CDD)
1897
12 days
1898
11 days
1899
16 days
1900
18 days
1901
17 days
1902
25 days
1903
23 days
1904
16 days
1907
12 days
1908
21 days
1909
20 days
1917
14 days
1918
23 days
1919
11 days
1920
11 days
1921
11 days
1922
12 days
1923
13 days
1927
16 days
1928
18 days
1929
15 days
1930
9 days
1931
12 days
1932
33 days
1933
21 days
1934
15 days
1935
17 days
1936
24 days
1937
13 days
1938
21 days
1939
24 days
1940
11 days
1941
22 days
1942
18 days
1943
18 days
1944
14 days
1945
11 days
1946
20 days
1947
27 days
1948
19 days
1949
23 days
1950
29 days
1951
16 days
1952
19 days
1953
22 days
1954
15 days
1955
25 days
1956
15 days
1957
17 days
1958
12 days
1959
13 days
1960
14 days
1961
16 days
1962
16 days
1963
27 days
1964
15 days
1965
10 days
1966
16 days
1967
12 days
1968
13 days
1969
25 days
1970
11 days
1971
18 days
1972
11 days
1973
17 days
1974
22 days
1975
21 days
1976
13 days
1977
22 days
1978
17 days
1979
13 days
1980
17 days
1981
15 days
1982
18 days
1983
22 days
1984
13 days
1997
16 days
1998
12 days
1999
23 days
2000
35 days
2001
9 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
55 years with a frost
Across 55 years with a frost, the median last spring frost at Penn Yan falls on 6 May and the median first autumn frost on 10 October, which leaves a median of 158 days between them.
Fitted over all years, the growing season changes by +0.7 days per decade at this station.
Frost dates and growing season at Penn Yan
Measure
Median, all years
Earliest period
Recent period (1948 to 2000)
Recent against earliest
Fitted trend
Last spring frost
6 May
n/a
6 May
n/a
-0.5 days per decade
First autumn frost
10 October
n/a
10 October
n/a
+0.2 days per decade
Growing days
158 days
n/a
161 days
n/a
+0.7 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, 1898 to 2000
A day with at least 48.6 mm (1.9 in) of rain is expected about once in 2 years. A day with at least 145.2 mm (5.7 in) of rain is expected about once in 100 years.
Rainfall return levels at Penn Yan: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
48.6 mm (1.9 in)
5 years
68.2 mm (2.7 in)
10 years
83.3 mm (3.3 in)
25 years
105.4 mm (4.1 in)
50 years
124.2 mm (4.9 in)
100 years
145.2 mm (5.7 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 1898 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: 115.3 mm (4.5 in) in 2000; 111.8 mm (4.4 in) in 1962; 108.2 mm (4.3 in) in 1938.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Penn Yan standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Penn Yan 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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.