Record envelope, standing records and threshold days for Nyssa (USC00356179), Oregon, United States, with 84 years of record.
Key Facts for Nyssa
Nyssa (USC00356179) is a weather station in Oregon, United States at 43.88 latitude and -116.99 longitude, 663 m (2,175 ft) above sea level.
The station reports from 1937 to 2020, 84 years of record.
1,464 records set at Nyssa still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Nyssa set a daily record high maximum temperature of 20.6 C (69.1 F) on 6 November 2020.
About the Station
Location: Oregon, United States, 43.88 latitude, -116.99 longitude.
Elevation: 663 m (2,175 ft).
Period of record: 1937 to 2020, 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 Nyssa. 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 Nyssa, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
17.8 C (64.0 F)
-28.3 C (-18.9 F)
n/a
n/a
Feb
20.0 C (68.0 F)
-27.8 C (-18.0 F)
n/a
n/a
Mar
27.8 C (82.0 F)
-12.2 C (10.0 F)
n/a
n/a
Apr
33.3 C (91.9 F)
-6.7 C (19.9 F)
n/a
n/a
May
37.8 C (100.0 F)
-4.4 C (24.1 F)
n/a
n/a
Jun
42.2 C (108.0 F)
-1.7 C (28.9 F)
n/a
n/a
Jul
42.8 C (109.0 F)
1.7 C (35.1 F)
n/a
n/a
Aug
41.1 C (106.0 F)
2.8 C (37.0 F)
n/a
n/a
Sep
37.8 C (100.0 F)
-2.2 C (28.0 F)
n/a
n/a
Oct
33.3 C (91.9 F)
-10.6 C (12.9 F)
n/a
n/a
Nov
25.6 C (78.1 F)
-18.3 C (-0.9 F)
n/a
n/a
Dec
19.4 C (66.9 F)
-27.8 C (-18.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Nyssa still stand. 2015 holds the most, with 44.
Standing records at Nyssa by the year they were set
Year set
Standing records
1937
4
1938
17
1939
19
1940
31
1941
19
1942
24
1943
20
1944
15
1945
17
1946
14
1947
19
1948
13
1949
33
1950
26
1951
17
1952
16
1953
21
1954
23
1955
22
1956
28
1957
16
1961
1
1962
25
1963
14
1964
19
1965
24
1966
23
1967
14
1968
16
1969
14
1970
18
1971
20
1972
28
1973
7
1974
20
1975
25
1976
5
1977
27
1978
15
1979
16
1980
6
1981
13
1982
15
1983
17
1984
19
1985
41
1986
36
1987
22
1988
17
1989
26
1990
25
1991
9
1992
28
1993
28
1994
17
1995
22
1996
19
1997
15
1998
24
1999
8
2000
6
2001
11
2002
24
2003
28
2004
8
2005
5
2006
11
2007
9
2008
13
2009
18
2010
12
2011
10
2012
11
2013
31
2014
39
2015
44
2016
28
2017
3
2020
1
All-Time Record Progression
5 new records
5 all-time records were set at Nyssa between 16 August 1992 and 15 December 2016. Each dot is a new record.
When Nyssa set new all-time records
Date
Kind
Detail
1992-08-16
Record high minimum temperature
Record high minimum temperature 24.4 C (75.9 F)
2002-07-13
Record high maximum temperature
Record high maximum temperature 42.8 C (109.0 F)
2014-07-13
Record high minimum temperature
Record high minimum temperature 25.0 C (77.0 F)
2015-06-30
Record high minimum temperature
Record high minimum temperature 25.6 C (78.1 F)
2016-12-15
Record daily precipitation
Record daily precipitation 50.8 mm (2.0 in)
Wettest Day of Each Month
Dec: 50.8 mm (2.0 in)
The wettest day on record for each calendar month at Nyssa. The most was 50.8 mm (2.0 in) on 15 December 2016.
Record daily precipitation for each month at Nyssa
Month
Record daily precipitation (mm)
Date
Jan
27.4 mm (1.1 in)
11 January 1979
Feb
38.9 mm (1.5 in)
13 February 1986
Mar
17.8 mm (0.7 in)
17 March 1993
Apr
25.9 mm (1.0 in)
14 April 2000
May
31.8 mm (1.3 in)
8 May 2016
Jun
32.3 mm (1.3 in)
16 June 1989
Jul
21.8 mm (0.9 in)
10 July 1997
Aug
45.0 mm (1.8 in)
12 August 1941
Sep
38.1 mm (1.5 in)
6 September 2016
Oct
28.4 mm (1.1 in)
29 October 1943
Nov
29.0 mm (1.1 in)
27 November 1942
Dec
50.8 mm (2.0 in)
15 December 2016
Period of Record Coverage
1937 to 2020
Complete yearUnder 90 percent of days
80 years of record at Nyssa, 1937 to 2020. 14 years have data for under 90 percent of days and are left out of rankings: 1937, 1938, 1948, 1955, 1961, 2005, 2006, 2007 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 66 complete years at Nyssa, 1939 to 2016. Blue stripes are years cooler than the station's own mean of 10.9 C (51.5 F); red stripes are warmer. The coolest year was 1985, at 8.3 C (47.0 F), and the warmest was 1940, at 12.5 C (54.6 F). The strongest colour marks a difference of 2.6 C (4.7 F).
Annual mean temperature at Nyssa as warming stripes, 1939 to 2016
Year
Annual mean temperature
Difference from the station mean
1939
11.8 C
+0.93 C
1940
12.5 C
+1.68 C
1941
11.7 C
+0.87 C
1942
10.5 C
-0.34 C
1943
11.2 C
+0.30 C
1945
10.9 C
+0.03 C
1946
11.2 C
+0.36 C
1947
11.2 C
+0.34 C
1949
10.6 C
-0.23 C
1950
10.6 C
-0.21 C
1951
10.2 C
-0.61 C
1952
10.0 C
-0.90 C
1953
11.1 C
+0.28 C
1954
10.8 C
-0.10 C
1955
9.5 C
-1.36 C
1956
10.3 C
-0.57 C
1957
10.0 C
-0.90 C
1962
10.1 C
-0.77 C
1963
11.0 C
+0.14 C
1964
9.6 C
-1.26 C
1965
10.6 C
-0.21 C
1966
11.5 C
+0.62 C
1967
11.3 C
+0.46 C
1968
10.8 C
-0.04 C
1969
10.8 C
-0.10 C
1970
10.6 C
-0.21 C
1971
10.6 C
-0.26 C
1972
10.1 C
-0.72 C
1973
11.3 C
+0.44 C
1974
11.0 C
+0.14 C
1975
9.8 C
-1.07 C
1976
9.7 C
-1.19 C
1977
10.6 C
-0.21 C
1978
10.8 C
-0.08 C
1979
10.4 C
-0.47 C
1980
10.9 C
0.00 C
1981
11.4 C
+0.53 C
1982
9.7 C
-1.17 C
1983
10.9 C
+0.04 C
1984
9.5 C
-1.31 C
1985
8.3 C
-2.51 C
1986
11.3 C
+0.40 C
1987
11.8 C
+0.93 C
1988
11.2 C
+0.38 C
1989
9.6 C
-1.21 C
1990
11.3 C
+0.43 C
1991
10.9 C
+0.01 C
1992
12.0 C
+1.10 C
1993
9.3 C
-1.53 C
1994
11.3 C
+0.43 C
1995
11.4 C
+0.54 C
1996
11.4 C
+0.55 C
1997
11.5 C
+0.69 C
1998
12.1 C
+1.25 C
1999
11.2 C
+0.33 C
2000
11.3 C
+0.43 C
2001
10.6 C
-0.24 C
2002
10.8 C
-0.07 C
2003
11.5 C
+0.69 C
2004
11.7 C
+0.83 C
2011
10.6 C
-0.25 C
2012
12.0 C
+1.13 C
2013
10.6 C
-0.30 C
2014
11.6 C
+0.75 C
2015
12.5 C
+1.64 C
2016
11.6 C
+0.75 C
The fitted trend in annual mean temperature here over 1939 to 2016 is 0.07 C (-0.02 to 0.16) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.12 F (-0.04 to 0.28) per decade. The slope is a straight line fitted to 66 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Nyssa
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.07 C (-0.02 to 0.16) per decade
0.12 F (-0.04 to 0.28) per decade
1939 to 2016
66
Not clearly different from zero
Mean daily maximum
0.01 C (-0.10 to 0.12) per decade
0.02 F (-0.18 to 0.21) per decade
1939 to 2016
66
Not clearly different from zero
Mean daily minimum
0.13 C (0.04 to 0.22) per decade
0.2 F (0.1 to 0.4) per decade
1939 to 2016
66
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
1937 to 2020
Yearly extremes at Nyssa: 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)
2002
38.9 C (102.0 F)
80
Coldest night (TNn)
-28.3 C (-18.9 F)
1962
-16.7 C (1.9 F)
80
Wettest day (Rx1day)
50.8 mm (2.0 in)
2016
18.8 mm (0.7 in)
80
Wettest five days (Rx5day)
61.3 mm (2.4 in)
1996
32.0 mm (1.3 in)
80
Longest dry spell (CDD)
124 days
1999
45 days
80
Hottest day (TXx)
The hottest day of the year at Nyssa, 1937 to 2020. The record is 42.8 C (109.0 F) in 2002, marked on the chart; the median year is 38.9 C (102.0 F).
Hottest day (TXx) at Nyssa by year
Year
Hottest day (TXx)
1937
20.6 C (69.1 F)
1938
40.6 C (105.1 F)
1939
40.6 C (105.1 F)
1940
42.2 C (108.0 F)
1941
38.9 C (102.0 F)
1942
42.2 C (108.0 F)
1943
38.9 C (102.0 F)
1944
37.8 C (100.0 F)
1945
37.8 C (100.0 F)
1946
40.6 C (105.1 F)
1947
40.0 C (104.0 F)
1948
38.3 C (100.9 F)
1949
40.0 C (104.0 F)
1950
37.8 C (100.0 F)
1951
39.4 C (102.9 F)
1952
38.3 C (100.9 F)
1953
40.6 C (105.1 F)
1954
38.3 C (100.9 F)
1955
40.0 C (104.0 F)
1956
40.6 C (105.1 F)
1957
37.8 C (100.0 F)
1961
13.9 C (57.0 F)
1962
40.6 C (105.1 F)
1963
37.2 C (99.0 F)
1964
37.8 C (100.0 F)
1965
37.8 C (100.0 F)
1966
37.8 C (100.0 F)
1967
40.6 C (105.1 F)
1968
38.3 C (100.9 F)
1969
39.4 C (102.9 F)
1970
38.9 C (102.0 F)
1971
40.0 C (104.0 F)
1972
39.4 C (102.9 F)
1973
40.0 C (104.0 F)
1974
38.9 C (102.0 F)
1975
38.9 C (102.0 F)
1976
38.3 C (100.9 F)
1977
38.9 C (102.0 F)
1978
39.4 C (102.9 F)
1979
40.0 C (104.0 F)
1980
40.0 C (104.0 F)
1981
38.9 C (102.0 F)
1982
37.2 C (99.0 F)
1983
39.4 C (102.9 F)
1984
38.9 C (102.0 F)
1985
38.9 C (102.0 F)
1986
38.9 C (102.0 F)
1987
38.3 C (100.9 F)
1988
38.9 C (102.0 F)
1989
38.3 C (100.9 F)
1990
38.9 C (102.0 F)
1991
37.8 C (100.0 F)
1992
39.4 C (102.9 F)
1993
35.6 C (96.1 F)
1994
38.9 C (102.0 F)
1995
38.3 C (100.9 F)
1996
39.4 C (102.9 F)
1997
38.3 C (100.9 F)
1998
41.1 C (106.0 F)
1999
38.3 C (100.9 F)
2000
39.4 C (102.9 F)
2001
40.6 C (105.1 F)
2002
42.8 C (109.0 F)
2003
42.8 C (109.0 F)
2004
39.4 C (102.9 F)
2005
39.4 C (102.9 F)
2006
41.7 C (107.1 F)
2007
40.0 C (104.0 F)
2008
38.3 C (100.9 F)
2009
38.9 C (102.0 F)
2010
38.3 C (100.9 F)
2011
37.2 C (99.0 F)
2012
38.9 C (102.0 F)
2013
41.7 C (107.1 F)
2014
41.1 C (106.0 F)
2015
41.7 C (107.1 F)
2016
38.9 C (102.0 F)
2017
5.0 C (41.0 F)
2019
28.9 C (84.0 F)
2020
20.6 C (69.1 F)
Coldest night (TNn)
The coldest night of the year at Nyssa, 1937 to 2020. The record is -28.3 C (-18.9 F) in 1962, marked on the chart; the median year is -16.7 C (1.9 F).
Coldest night (TNn) at Nyssa by year
Year
Coldest night (TNn)
1937
-7.8 C (18.0 F)
1938
-11.1 C (12.0 F)
1939
-10.6 C (12.9 F)
1940
-14.4 C (6.1 F)
1941
-11.1 C (12.0 F)
1942
-20.6 C (-5.1 F)
1943
-18.3 C (-0.9 F)
1944
-17.2 C (1.0 F)
1945
-17.2 C (1.0 F)
1946
-10.0 C (14.0 F)
1947
-17.8 C (0.0 F)
1948
-18.9 C (-2.0 F)
1949
-25.0 C (-13.0 F)
1950
-23.9 C (-11.0 F)
1951
-17.2 C (1.0 F)
1952
-16.1 C (3.0 F)
1953
-7.8 C (18.0 F)
1954
-13.3 C (8.1 F)
1955
-16.7 C (1.9 F)
1956
-20.6 C (-5.1 F)
1957
-27.2 C (-17.0 F)
1961
-10.6 C (12.9 F)
1962
-28.3 C (-18.9 F)
1963
-20.0 C (-4.0 F)
1964
-20.6 C (-5.1 F)
1965
-16.7 C (1.9 F)
1966
-12.8 C (9.0 F)
1967
-16.1 C (3.0 F)
1968
-13.3 C (8.1 F)
1969
-12.2 C (10.0 F)
1970
-15.0 C (5.0 F)
1971
-13.3 C (8.1 F)
1972
-27.8 C (-18.0 F)
1973
-12.2 C (10.0 F)
1974
-20.0 C (-4.0 F)
1975
-19.4 C (-2.9 F)
1976
-17.2 C (1.0 F)
1977
-22.2 C (-8.0 F)
1978
-19.4 C (-2.9 F)
1979
-27.8 C (-18.0 F)
1980
-20.6 C (-5.1 F)
1981
-15.6 C (3.9 F)
1982
-22.2 C (-8.0 F)
1983
-22.2 C (-8.0 F)
1984
-22.2 C (-8.0 F)
1985
-23.9 C (-11.0 F)
1986
-15.6 C (3.9 F)
1987
-13.9 C (7.0 F)
1988
-18.9 C (-2.0 F)
1989
-27.8 C (-18.0 F)
1990
-27.2 C (-17.0 F)
1991
-17.8 C (0.0 F)
1992
-20.0 C (-4.0 F)
1993
-17.8 C (0.0 F)
1994
-16.1 C (3.0 F)
1995
-16.1 C (3.0 F)
1996
-16.1 C (3.0 F)
1997
-12.2 C (10.0 F)
1998
-17.8 C (0.0 F)
1999
-8.3 C (17.1 F)
2000
-11.1 C (12.0 F)
2001
-13.3 C (8.1 F)
2002
-12.8 C (9.0 F)
2003
-13.3 C (8.1 F)
2004
-16.1 C (3.0 F)
2005
-16.1 C (3.0 F)
2006
-12.8 C (9.0 F)
2007
-15.0 C (5.0 F)
2008
-18.3 C (-0.9 F)
2009
-18.3 C (-0.9 F)
2010
-12.2 C (10.0 F)
2011
-15.0 C (5.0 F)
2012
-14.4 C (6.1 F)
2013
-23.3 C (-9.9 F)
2014
-17.2 C (1.0 F)
2015
-12.8 C (9.0 F)
2016
-21.1 C (-6.0 F)
2017
-27.8 C (-18.0 F)
2019
6.7 C (44.1 F)
2020
-9.4 C (15.1 F)
Wettest day (Rx1day)
The wettest day of the year at Nyssa, 1937 to 2020. The record is 50.8 mm (2.0 in) in 2016, marked on the chart; the median year is 18.8 mm (0.7 in).
Wettest day (Rx1day) at Nyssa by year
Year
Wettest day (Rx1day)
1937
20.1 mm (0.8 in)
1938
16.0 mm (0.6 in)
1939
14.0 mm (0.6 in)
1940
22.1 mm (0.9 in)
1941
45.0 mm (1.8 in)
1942
29.0 mm (1.1 in)
1943
28.4 mm (1.1 in)
1944
18.8 mm (0.7 in)
1945
26.2 mm (1.0 in)
1946
18.8 mm (0.7 in)
1947
18.5 mm (0.7 in)
1948
9.7 mm (0.38 in)
1949
11.9 mm (0.5 in)
1950
15.0 mm (0.6 in)
1951
18.3 mm (0.7 in)
1952
17.0 mm (0.7 in)
1953
18.3 mm (0.7 in)
1954
15.7 mm (0.6 in)
1955
19.3 mm (0.8 in)
1956
21.8 mm (0.9 in)
1957
24.6 mm (1.0 in)
1961
13.0 mm (0.5 in)
1962
27.2 mm (1.1 in)
1963
14.0 mm (0.6 in)
1964
27.9 mm (1.1 in)
1965
14.2 mm (0.6 in)
1966
8.6 mm (0.34 in)
1967
15.2 mm (0.6 in)
1968
25.4 mm (1.0 in)
1969
23.9 mm (0.9 in)
1970
21.6 mm (0.9 in)
1971
19.8 mm (0.8 in)
1972
14.2 mm (0.6 in)
1973
15.2 mm (0.6 in)
1974
15.0 mm (0.6 in)
1975
23.4 mm (0.9 in)
1976
23.4 mm (0.9 in)
1977
24.1 mm (0.9 in)
1978
18.0 mm (0.7 in)
1979
33.5 mm (1.3 in)
1980
22.1 mm (0.9 in)
1981
24.4 mm (1.0 in)
1982
24.9 mm (1.0 in)
1983
24.6 mm (1.0 in)
1984
12.2 mm (0.5 in)
1985
15.7 mm (0.6 in)
1986
38.9 mm (1.5 in)
1987
16.8 mm (0.7 in)
1988
15.5 mm (0.6 in)
1989
32.3 mm (1.3 in)
1990
11.7 mm (0.5 in)
1991
18.3 mm (0.7 in)
1992
19.1 mm (0.8 in)
1993
18.8 mm (0.7 in)
1994
14.2 mm (0.6 in)
1995
20.8 mm (0.8 in)
1996
20.6 mm (0.8 in)
1997
23.6 mm (0.9 in)
1998
21.1 mm (0.8 in)
1999
14.5 mm (0.6 in)
2000
25.9 mm (1.0 in)
2001
18.5 mm (0.7 in)
2002
23.4 mm (0.9 in)
2003
12.7 mm (0.5 in)
2004
19.6 mm (0.8 in)
2005
27.7 mm (1.1 in)
2006
15.2 mm (0.6 in)
2007
8.9 mm (0.35 in)
2008
13.5 mm (0.5 in)
2009
11.2 mm (0.4 in)
2010
25.7 mm (1.0 in)
2011
20.6 mm (0.8 in)
2012
17.0 mm (0.7 in)
2013
17.8 mm (0.7 in)
2014
20.3 mm (0.8 in)
2015
17.8 mm (0.7 in)
2016
50.8 mm (2.0 in)
2017
14.2 mm (0.6 in)
2019
0.0 mm (0.00 in)
2020
13.5 mm (0.5 in)
Wettest five days (Rx5day)
The wettest five days of the year at Nyssa, 1937 to 2020. The record is 61.3 mm (2.4 in) in 1996, marked on the chart; the median year is 32.0 mm (1.3 in).
Wettest five days (Rx5day) at Nyssa by year
Year
Wettest five days (Rx5day)
1937
36.6 mm (1.4 in)
1938
26.7 mm (1.1 in)
1939
31.2 mm (1.2 in)
1940
35.0 mm (1.4 in)
1941
45.0 mm (1.8 in)
1942
45.2 mm (1.8 in)
1943
38.3 mm (1.5 in)
1944
36.6 mm (1.4 in)
1945
34.6 mm (1.4 in)
1946
25.9 mm (1.0 in)
1947
33.3 mm (1.3 in)
1948
15.2 mm (0.6 in)
1949
15.0 mm (0.6 in)
1950
26.8 mm (1.1 in)
1951
34.4 mm (1.4 in)
1952
27.5 mm (1.1 in)
1953
32.5 mm (1.3 in)
1954
29.1 mm (1.1 in)
1955
23.9 mm (0.9 in)
1956
43.7 mm (1.7 in)
1957
36.6 mm (1.4 in)
1961
15.8 mm (0.6 in)
1962
51.3 mm (2.0 in)
1963
31.7 mm (1.2 in)
1964
29.9 mm (1.2 in)
1965
37.8 mm (1.5 in)
1966
20.1 mm (0.8 in)
1967
27.9 mm (1.1 in)
1968
50.1 mm (2.0 in)
1969
43.4 mm (1.7 in)
1970
34.0 mm (1.3 in)
1971
35.4 mm (1.4 in)
1972
26.1 mm (1.0 in)
1973
18.3 mm (0.7 in)
1974
21.1 mm (0.8 in)
1975
29.8 mm (1.2 in)
1976
37.1 mm (1.5 in)
1977
37.0 mm (1.5 in)
1978
31.7 mm (1.2 in)
1979
37.7 mm (1.5 in)
1980
42.2 mm (1.7 in)
1981
34.1 mm (1.3 in)
1982
45.7 mm (1.8 in)
1983
41.8 mm (1.6 in)
1984
32.7 mm (1.3 in)
1985
21.7 mm (0.9 in)
1986
47.1 mm (1.9 in)
1987
28.5 mm (1.1 in)
1988
20.1 mm (0.8 in)
1989
34.6 mm (1.4 in)
1990
24.1 mm (0.9 in)
1991
33.8 mm (1.3 in)
1992
26.3 mm (1.0 in)
1993
40.4 mm (1.6 in)
1994
21.8 mm (0.9 in)
1995
37.5 mm (1.5 in)
1996
61.3 mm (2.4 in)
1997
37.3 mm (1.5 in)
1998
45.5 mm (1.8 in)
1999
22.4 mm (0.9 in)
2000
42.5 mm (1.7 in)
2001
25.6 mm (1.0 in)
2002
32.2 mm (1.3 in)
2003
27.4 mm (1.1 in)
2004
34.9 mm (1.4 in)
2005
30.3 mm (1.2 in)
2006
25.1 mm (1.0 in)
2007
9.4 mm (0.37 in)
2008
13.8 mm (0.5 in)
2009
12.2 mm (0.5 in)
2010
34.6 mm (1.4 in)
2011
31.8 mm (1.3 in)
2012
25.5 mm (1.0 in)
2013
21.4 mm (0.8 in)
2014
27.2 mm (1.1 in)
2015
26.7 mm (1.1 in)
2016
50.8 mm (2.0 in)
2017
45.0 mm (1.8 in)
2019
0.0 mm (0.00 in)
2020
26.9 mm (1.1 in)
Longest dry spell (CDD)
The longest dry spell of the year at Nyssa, 1937 to 2020. The record is 124 days in 1999, marked on the chart; the median year is 45 days.
Longest dry spell (CDD) at Nyssa by year
Year
Longest dry spell (CDD)
1937
6 days
1938
58 days
1939
67 days
1940
64 days
1941
29 days
1942
60 days
1943
57 days
1944
46 days
1945
68 days
1946
26 days
1947
52 days
1948
25 days
1949
56 days
1950
37 days
1951
58 days
1952
68 days
1953
50 days
1954
65 days
1955
54 days
1956
44 days
1957
76 days
1961
18 days
1962
59 days
1963
26 days
1964
38 days
1965
28 days
1966
77 days
1967
81 days
1968
52 days
1969
83 days
1970
37 days
1971
90 days
1972
41 days
1973
61 days
1974
90 days
1975
43 days
1976
36 days
1977
49 days
1978
72 days
1979
46 days
1980
34 days
1981
43 days
1982
39 days
1983
36 days
1984
34 days
1985
38 days
1986
75 days
1987
79 days
1988
119 days
1989
36 days
1990
45 days
1991
46 days
1992
71 days
1993
58 days
1994
58 days
1995
25 days
1996
35 days
1997
31 days
1998
42 days
1999
124 days
2000
80 days
2001
44 days
2002
50 days
2003
48 days
2004
33 days
2005
39 days
2006
42 days
2007
35 days
2008
43 days
2009
32 days
2010
30 days
2011
79 days
2012
38 days
2013
60 days
2014
37 days
2015
40 days
2016
33 days
2017
3 days
2019
9 days
2020
22 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
66 years with a frost
Across 66 years with a frost, the median last spring frost at Nyssa falls on 25 April and the median first autumn frost on 8 October, which leaves a median of 165 days between them.
In 1981 to 2016 the median growing season was 173 days. That is 13 days more than in 1939 to 1974.
Fitted over all years, the growing season changes by +1.6 days per decade at this station.
Frost dates and growing season at Nyssa
Measure
Median, all years
Earliest period (1939 to 1974)
Recent period (1981 to 2016)
Recent against earliest
Fitted trend
Last spring frost
25 April
28 April
26 April
2 days earlier
-0.2 days per decade
First autumn frost
8 October
4 October
12 October
8 days later
+1.4 days per decade
Growing days
165 days
160 days
173 days
13 days more
+1.6 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
68 years, 1939 to 2016
A day with at least 19.5 mm (0.8 in) of rain is expected about once in 2 years. A day with at least 45.6 mm (1.8 in) of rain is expected about once in 100 years.
Rainfall return levels at Nyssa: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
19.5 mm (0.8 in)
5 years
25.7 mm (1.0 in)
10 years
30.0 mm (1.2 in)
25 years
36.0 mm (1.4 in)
50 years
40.7 mm (1.6 in)
100 years
45.6 mm (1.8 in)
Longer than the 68 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, 68 years of values from 1939 to 2016.
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: 50.8 mm (2.0 in) in 2016; 45.0 mm (1.8 in) in 1941; 38.9 mm (1.5 in) in 1986.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Nyssa standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Nyssa 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.