Record envelope, standing records and threshold days for Klamath Falls 2 SSW (USC00354506), Oregon, United States, with 115 years of record.
Key Facts for Klamath Falls 2 SSW
Klamath Falls 2 SSW (USC00354506) is a weather station in Oregon, United States at 42.20 latitude and -121.78 longitude, 1,249 m (4,098 ft) above sea level.
The station reports from 1887 to 2001, 115 years of record.
1,464 records set at Klamath Falls 2 SSW still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Klamath Falls 2 SSW set a daily record precipitation of 19.6 mm (0.8 in) on 17 May 2001.
About the Station
Location: Oregon, United States, 42.20 latitude, -121.78 longitude.
Elevation: 1,249 m (4,098 ft).
Period of record: 1887 to 2001, 115 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 Klamath Falls 2 SSW. 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 Klamath Falls 2 SSW, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
25.6 C (78.1 F)
-31.1 C (-24.0 F)
n/a
n/a
Feb
20.6 C (69.1 F)
-23.3 C (-9.9 F)
n/a
n/a
Mar
25.0 C (77.0 F)
-20.6 C (-5.1 F)
n/a
n/a
Apr
30.6 C (87.1 F)
-12.2 C (10.0 F)
n/a
n/a
May
36.7 C (98.1 F)
-8.3 C (17.1 F)
n/a
n/a
Jun
37.8 C (100.0 F)
-4.4 C (24.1 F)
n/a
n/a
Jul
39.4 C (102.9 F)
-5.6 C (21.9 F)
n/a
n/a
Aug
40.0 C (104.0 F)
-2.2 C (28.0 F)
n/a
n/a
Sep
39.4 C (102.9 F)
-6.7 C (19.9 F)
n/a
n/a
Oct
33.3 C (91.9 F)
-11.7 C (10.9 F)
n/a
n/a
Nov
23.3 C (73.9 F)
-17.2 C (1.0 F)
n/a
n/a
Dec
17.2 C (63.0 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 Klamath Falls 2 SSW still stand. 1917 holds the most, with 39.
Standing records at Klamath Falls 2 SSW by the year they were set
Year set
Standing records
1887
14
1888
22
1889
18
1894
19
1895
15
1898
16
1899
13
1900
11
1901
11
1902
34
1903
13
1904
19
1905
19
1906
20
1907
19
1908
13
1909
15
1910
12
1911
21
1912
19
1913
23
1914
5
1915
8
1916
13
1917
39
1918
10
1919
19
1920
18
1921
5
1922
15
1923
4
1924
26
1925
9
1926
12
1927
19
1928
8
1929
15
1930
9
1931
8
1932
15
1933
18
1934
30
1935
21
1936
12
1937
9
1938
11
1939
12
1940
14
1941
6
1942
5
1943
1
1944
4
1945
16
1946
3
1947
5
1948
6
1949
13
1950
18
1951
11
1952
11
1953
5
1954
9
1955
20
1956
8
1957
9
1958
16
1959
20
1960
20
1961
15
1962
18
1963
18
1964
12
1965
3
1966
12
1967
9
1968
14
1969
6
1970
11
1971
14
1972
18
1973
8
1974
14
1975
12
1976
9
1977
11
1978
4
1979
5
1980
7
1981
15
1982
6
1983
10
1984
7
1985
23
1986
29
1987
26
1988
18
1989
11
1990
10
1991
14
1992
32
1993
11
1994
17
1995
19
1996
13
1997
4
1998
6
1999
6
2000
8
2001
3
All-Time Record Progression
3 new records
3 all-time records were set at Klamath Falls 2 SSW between 22 December 1964 and 8 August 1981. Each dot is a new record.
When Klamath Falls 2 SSW set new all-time records
Date
Kind
Detail
1964-12-22
Record daily precipitation
Record daily precipitation 65.5 mm (2.6 in)
1972-08-07
Record high maximum temperature
Record high maximum temperature 40.0 C (104.0 F)
1981-08-08
Record high minimum temperature
Record high minimum temperature 22.8 C (73.0 F)
Wettest Day of Each Month
Dec: 65.5 mm (2.6 in)
The wettest day on record for each calendar month at Klamath Falls 2 SSW. The most was 65.5 mm (2.6 in) on 22 December 1964.
Record daily precipitation for each month at Klamath Falls 2 SSW
Month
Record daily precipitation (mm)
Date
Jan
61.0 mm (2.4 in)
2 January 1901
Feb
43.2 mm (1.7 in)
15 February 1904
Mar
40.6 mm (1.6 in)
26 March 1904
Apr
29.2 mm (1.1 in)
18 April 2000
May
26.7 mm (1.1 in)
30 May 1945
Jun
36.8 mm (1.4 in)
1 June 1925
Jul
34.8 mm (1.4 in)
5 July 1948
Aug
51.1 mm (2.0 in)
18 August 1941
Sep
59.4 mm (2.3 in)
27 September 1957
Oct
44.5 mm (1.8 in)
14 October 1908
Nov
42.7 mm (1.7 in)
13 November 1957
Dec
65.5 mm (2.6 in)
22 December 1964
Period of Record Coverage
1887 to 2001
Complete yearUnder 90 percent of days
110 years of record at Klamath Falls 2 SSW, 1887 to 2001. 18 years have data for under 90 percent of days and are left out of rankings: 1887, 1888, 1889, 1894, 1895, 1897, 1898, 1899 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 90 complete years at Klamath Falls 2 SSW, 1901 to 1997. Blue stripes are years cooler than the station's own mean of 8.9 C (48.0 F); red stripes are warmer. The coolest year was 1913, at 7.1 C (44.8 F), and the warmest was 1992, at 11.1 C (52.0 F). The strongest colour marks a difference of 2.3 C (4.1 F).
Annual mean temperature at Klamath Falls 2 SSW as warming stripes, 1901 to 1997
Year
Annual mean temperature
Difference from the station mean
1901
8.6 C
-0.35 C
1902
9.1 C
+0.16 C
1905
9.4 C
+0.51 C
1908
8.4 C
-0.50 C
1909
7.8 C
-1.09 C
1910
8.3 C
-0.60 C
1911
7.1 C
-1.80 C
1912
7.5 C
-1.39 C
1913
7.1 C
-1.81 C
1914
8.8 C
-0.14 C
1915
9.1 C
+0.17 C
1916
8.0 C
-0.92 C
1917
7.9 C
-0.96 C
1918
9.1 C
+0.23 C
1919
8.6 C
-0.33 C
1920
8.5 C
-0.45 C
1921
9.4 C
+0.48 C
1922
7.9 C
-0.97 C
1923
8.1 C
-0.78 C
1924
9.0 C
+0.06 C
1925
9.2 C
+0.31 C
1926
10.2 C
+1.25 C
1927
8.0 C
-0.92 C
1928
8.6 C
-0.27 C
1929
8.4 C
-0.54 C
1930
8.5 C
-0.44 C
1931
9.6 C
+0.70 C
1932
8.5 C
-0.41 C
1933
8.6 C
-0.33 C
1934
10.9 C
+2.04 C
1935
8.1 C
-0.79 C
1936
10.0 C
+1.12 C
1937
8.7 C
-0.25 C
1938
8.7 C
-0.23 C
1939
10.0 C
+1.12 C
1940
10.5 C
+1.61 C
1941
9.7 C
+0.79 C
1942
9.1 C
+0.21 C
1943
9.2 C
+0.26 C
1944
8.6 C
-0.29 C
1945
9.4 C
+0.46 C
1946
8.8 C
-0.06 C
1947
9.6 C
+0.68 C
1948
7.9 C
-0.99 C
1949
8.6 C
-0.27 C
1950
9.5 C
+0.58 C
1951
9.5 C
+0.63 C
1953
8.9 C
0.00 C
1954
8.9 C
-0.02 C
1955
8.1 C
-0.82 C
1956
8.7 C
-0.18 C
1957
8.4 C
-0.46 C
1958
9.3 C
+0.41 C
1959
8.7 C
-0.22 C
1960
8.9 C
+0.03 C
1961
8.9 C
+0.01 C
1962
8.1 C
-0.76 C
1963
8.6 C
-0.33 C
1964
7.5 C
-1.37 C
1965
8.5 C
-0.42 C
1966
8.9 C
+0.04 C
1967
8.7 C
-0.19 C
1968
8.9 C
-0.03 C
1969
8.6 C
-0.33 C
1970
8.9 C
-0.04 C
1971
8.2 C
-0.75 C
1972
8.8 C
-0.09 C
1973
9.3 C
+0.35 C
1974
9.3 C
+0.38 C
1975
8.2 C
-0.73 C
1976
8.8 C
-0.11 C
1977
8.6 C
-0.26 C
1978
8.9 C
-0.04 C
1979
9.1 C
+0.21 C
1980
9.0 C
+0.14 C
1981
9.8 C
+0.92 C
1983
8.8 C
-0.09 C
1984
8.5 C
-0.40 C
1985
8.3 C
-0.64 C
1986
10.1 C
+1.24 C
1987
10.0 C
+1.13 C
1988
9.6 C
+0.67 C
1990
9.1 C
+0.20 C
1991
9.8 C
+0.85 C
1992
11.1 C
+2.23 C
1993
8.3 C
-0.63 C
1994
9.7 C
+0.81 C
1995
10.4 C
+1.53 C
1996
10.2 C
+1.34 C
1997
10.0 C
+1.14 C
The annual mean temperature here has risen by 0.10 C (0.05 to 0.16) per decade over 1901 to 1997. In Fahrenheit: 0.2 F (0.1 to 0.3) 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 Klamath Falls 2 SSW
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.10 C (0.05 to 0.16) per decade
0.2 F (0.1 to 0.3) per decade
1901 to 1997
90
Rise
Mean daily maximum
0.12 C (0.05 to 0.20) per decade
0.2 F (0.1 to 0.4) per decade
1901 to 1997
90
Rise
Mean daily minimum
0.08 C (0.02 to 0.15) per decade
0.15 F (0.03 to 0.27) per decade
1901 to 1997
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
1887 to 2001
Yearly extremes at Klamath Falls 2 SSW: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
40.0 C (104.0 F)
1972
36.1 C (97.0 F)
110
Coldest night (TNn)
-31.1 C (-24.0 F)
1888
-17.2 C (1.0 F)
110
Wettest day (Rx1day)
65.5 mm (2.6 in)
1964
26.6 mm (1.0 in)
110
Wettest five days (Rx5day)
162.0 mm (6.4 in)
1964
49.3 mm (1.9 in)
110
Longest dry spell (CDD)
139 days
1951
55 days
110
Hottest day (TXx)
The hottest day of the year at Klamath Falls 2 SSW, 1887 to 2001. The record is 40.0 C (104.0 F) in 1972, marked on the chart; the median year is 36.1 C (97.0 F).
Hottest day (TXx) at Klamath Falls 2 SSW by year
Year
Hottest day (TXx)
1887
35.0 C (95.0 F)
1888
32.8 C (91.0 F)
1889
32.2 C (90.0 F)
1894
35.6 C (96.1 F)
1895
36.1 C (97.0 F)
1897
9.4 C (48.9 F)
1898
37.8 C (100.0 F)
1899
36.7 C (98.1 F)
1900
32.8 C (91.0 F)
1901
37.2 C (99.0 F)
1902
39.4 C (102.9 F)
1903
36.7 C (98.1 F)
1904
33.9 C (93.0 F)
1905
39.4 C (102.9 F)
1906
38.3 C (100.9 F)
1907
33.9 C (93.0 F)
1908
37.2 C (99.0 F)
1909
32.8 C (91.0 F)
1910
34.4 C (93.9 F)
1911
38.3 C (100.9 F)
1912
33.9 C (93.0 F)
1913
33.3 C (91.9 F)
1914
35.0 C (95.0 F)
1915
37.2 C (99.0 F)
1916
36.7 C (98.1 F)
1917
37.8 C (100.0 F)
1918
37.8 C (100.0 F)
1919
36.7 C (98.1 F)
1920
37.8 C (100.0 F)
1921
35.6 C (96.1 F)
1922
37.8 C (100.0 F)
1923
34.4 C (93.9 F)
1924
36.7 C (98.1 F)
1925
35.6 C (96.1 F)
1926
35.6 C (96.1 F)
1927
33.9 C (93.0 F)
1928
38.9 C (102.0 F)
1929
36.7 C (98.1 F)
1930
37.2 C (99.0 F)
1931
37.8 C (100.0 F)
1932
36.1 C (97.0 F)
1933
38.9 C (102.0 F)
1934
37.2 C (99.0 F)
1935
36.1 C (97.0 F)
1936
37.8 C (100.0 F)
1937
36.7 C (98.1 F)
1938
37.2 C (99.0 F)
1939
38.3 C (100.9 F)
1940
36.1 C (97.0 F)
1941
34.4 C (93.9 F)
1942
37.2 C (99.0 F)
1943
33.9 C (93.0 F)
1944
35.0 C (95.0 F)
1945
35.0 C (95.0 F)
1946
37.8 C (100.0 F)
1947
32.8 C (91.0 F)
1948
35.6 C (96.1 F)
1949
33.9 C (93.0 F)
1950
35.6 C (96.1 F)
1951
35.0 C (95.0 F)
1952
33.3 C (91.9 F)
1953
32.8 C (91.0 F)
1954
33.9 C (93.0 F)
1955
35.6 C (96.1 F)
1956
34.4 C (93.9 F)
1957
33.3 C (91.9 F)
1958
35.0 C (95.0 F)
1959
35.6 C (96.1 F)
1960
36.7 C (98.1 F)
1961
36.7 C (98.1 F)
1962
33.3 C (91.9 F)
1963
32.2 C (90.0 F)
1964
35.6 C (96.1 F)
1965
32.8 C (91.0 F)
1966
33.9 C (93.0 F)
1967
35.0 C (95.0 F)
1968
35.6 C (96.1 F)
1969
35.0 C (95.0 F)
1970
35.0 C (95.0 F)
1971
37.2 C (99.0 F)
1972
40.0 C (104.0 F)
1973
36.1 C (97.0 F)
1974
35.0 C (95.0 F)
1975
36.7 C (98.1 F)
1976
34.4 C (93.9 F)
1977
36.1 C (97.0 F)
1978
37.2 C (99.0 F)
1979
36.7 C (98.1 F)
1980
36.7 C (98.1 F)
1981
38.9 C (102.0 F)
1982
35.0 C (95.0 F)
1983
35.6 C (96.1 F)
1984
36.7 C (98.1 F)
1985
37.2 C (99.0 F)
1986
36.7 C (98.1 F)
1987
38.3 C (100.9 F)
1988
38.9 C (102.0 F)
1989
33.3 C (91.9 F)
1990
37.8 C (100.0 F)
1991
38.3 C (100.9 F)
1992
39.4 C (102.9 F)
1993
36.1 C (97.0 F)
1994
37.8 C (100.0 F)
1995
36.7 C (98.1 F)
1996
37.8 C (100.0 F)
1997
35.6 C (96.1 F)
1998
38.3 C (100.9 F)
1999
37.8 C (100.0 F)
2000
36.1 C (97.0 F)
2001
32.8 C (91.0 F)
Coldest night (TNn)
The coldest night of the year at Klamath Falls 2 SSW, 1887 to 2001. The record is -31.1 C (-24.0 F) in 1888, marked on the chart; the median year is -17.2 C (1.0 F).
Coldest night (TNn) at Klamath Falls 2 SSW by year
Year
Coldest night (TNn)
1887
-13.9 C (7.0 F)
1888
-31.1 C (-24.0 F)
1889
-17.8 C (0.0 F)
1894
-13.9 C (7.0 F)
1895
-11.7 C (10.9 F)
1897
-10.6 C (12.9 F)
1898
-17.8 C (0.0 F)
1899
-17.8 C (0.0 F)
1900
-11.7 C (10.9 F)
1901
-21.1 C (-6.0 F)
1902
-20.6 C (-5.1 F)
1903
-18.3 C (-0.9 F)
1904
-17.8 C (0.0 F)
1905
-17.8 C (0.0 F)
1906
-17.8 C (0.0 F)
1907
-12.8 C (9.0 F)
1908
-18.3 C (-0.9 F)
1909
-17.2 C (1.0 F)
1910
-19.4 C (-2.9 F)
1911
-21.1 C (-6.0 F)
1912
-25.6 C (-14.1 F)
1913
-21.1 C (-6.0 F)
1914
-14.4 C (6.1 F)
1915
-17.8 C (0.0 F)
1916
-18.9 C (-2.0 F)
1917
-25.0 C (-13.0 F)
1918
-18.9 C (-2.0 F)
1919
-26.7 C (-16.1 F)
1920
-11.1 C (12.0 F)
1921
-16.1 C (3.0 F)
1922
-22.8 C (-9.0 F)
1923
-21.1 C (-6.0 F)
1924
-21.1 C (-6.0 F)
1925
-12.2 C (10.0 F)
1926
-16.7 C (1.9 F)
1927
-17.8 C (0.0 F)
1928
-16.1 C (3.0 F)
1929
-17.8 C (0.0 F)
1930
-21.7 C (-7.1 F)
1931
-17.8 C (0.0 F)
1932
-23.3 C (-9.9 F)
1933
-23.3 C (-9.9 F)
1934
-8.9 C (16.0 F)
1935
-18.9 C (-2.0 F)
1936
-11.7 C (10.9 F)
1937
-25.0 C (-13.0 F)
1938
-17.8 C (0.0 F)
1939
-15.6 C (3.9 F)
1940
-12.2 C (10.0 F)
1941
-11.1 C (12.0 F)
1942
-18.9 C (-2.0 F)
1943
-16.7 C (1.9 F)
1944
-15.6 C (3.9 F)
1945
-14.4 C (6.1 F)
1946
-15.0 C (5.0 F)
1947
-15.0 C (5.0 F)
1948
-17.2 C (1.0 F)
1949
-21.7 C (-7.1 F)
1950
-24.4 C (-11.9 F)
1951
-16.1 C (3.0 F)
1952
-18.3 C (-0.9 F)
1953
-10.6 C (12.9 F)
1954
-16.7 C (1.9 F)
1955
-15.6 C (3.9 F)
1956
-17.2 C (1.0 F)
1957
-17.8 C (0.0 F)
1958
-13.3 C (8.1 F)
1959
-15.6 C (3.9 F)
1960
-17.2 C (1.0 F)
1961
-16.1 C (3.0 F)
1962
-25.6 C (-14.1 F)
1963
-17.8 C (0.0 F)
1964
-14.4 C (6.1 F)
1965
-16.7 C (1.9 F)
1966
-13.9 C (7.0 F)
1967
-21.7 C (-7.1 F)
1968
-17.2 C (1.0 F)
1969
-23.9 C (-11.0 F)
1970
-16.1 C (3.0 F)
1971
-16.7 C (1.9 F)
1972
-27.2 C (-17.0 F)
1973
-16.1 C (3.0 F)
1974
-18.9 C (-2.0 F)
1975
-17.2 C (1.0 F)
1976
-13.3 C (8.1 F)
1977
-22.2 C (-8.0 F)
1978
-18.3 C (-0.9 F)
1979
-15.0 C (5.0 F)
1980
-15.0 C (5.0 F)
1981
-10.0 C (14.0 F)
1982
-18.9 C (-2.0 F)
1983
-19.4 C (-2.9 F)
1984
-18.9 C (-2.0 F)
1985
-17.2 C (1.0 F)
1986
-10.6 C (12.9 F)
1987
-15.6 C (3.9 F)
1988
-21.1 C (-6.0 F)
1989
-23.3 C (-9.9 F)
1990
-26.7 C (-16.1 F)
1991
-15.6 C (3.9 F)
1992
-17.2 C (1.0 F)
1993
-22.8 C (-9.0 F)
1994
-15.6 C (3.9 F)
1995
-10.6 C (12.9 F)
1996
-14.4 C (6.1 F)
1997
-15.0 C (5.0 F)
1998
-22.2 C (-8.0 F)
1999
-15.0 C (5.0 F)
2000
-11.1 C (12.0 F)
2001
-12.2 C (10.0 F)
Wettest day (Rx1day)
The wettest day of the year at Klamath Falls 2 SSW, 1887 to 2001. The record is 65.5 mm (2.6 in) in 1964, marked on the chart; the median year is 26.6 mm (1.0 in).
Wettest day (Rx1day) at Klamath Falls 2 SSW by year
Year
Wettest day (Rx1day)
1887
13.0 mm (0.5 in)
1888
27.9 mm (1.1 in)
1889
23.4 mm (0.9 in)
1894
24.4 mm (1.0 in)
1895
15.2 mm (0.6 in)
1897
12.7 mm (0.5 in)
1898
28.4 mm (1.1 in)
1899
28.4 mm (1.1 in)
1900
15.2 mm (0.6 in)
1901
61.0 mm (2.4 in)
1902
38.1 mm (1.5 in)
1903
33.3 mm (1.3 in)
1904
43.2 mm (1.7 in)
1905
23.1 mm (0.9 in)
1906
49.5 mm (1.9 in)
1907
30.5 mm (1.2 in)
1908
44.5 mm (1.8 in)
1909
23.6 mm (0.9 in)
1910
36.8 mm (1.4 in)
1911
20.6 mm (0.8 in)
1912
34.0 mm (1.3 in)
1913
38.1 mm (1.5 in)
1914
26.7 mm (1.1 in)
1915
20.3 mm (0.8 in)
1916
22.9 mm (0.9 in)
1917
24.9 mm (1.0 in)
1918
22.6 mm (0.9 in)
1919
15.7 mm (0.6 in)
1920
25.1 mm (1.0 in)
1921
24.9 mm (1.0 in)
1922
18.3 mm (0.7 in)
1923
18.3 mm (0.7 in)
1924
38.4 mm (1.5 in)
1925
36.8 mm (1.4 in)
1926
39.6 mm (1.6 in)
1927
27.7 mm (1.1 in)
1928
31.0 mm (1.2 in)
1929
33.5 mm (1.3 in)
1930
31.8 mm (1.3 in)
1931
25.9 mm (1.0 in)
1932
25.7 mm (1.0 in)
1933
24.9 mm (1.0 in)
1934
14.0 mm (0.6 in)
1935
22.9 mm (0.9 in)
1936
29.2 mm (1.1 in)
1937
37.6 mm (1.5 in)
1938
20.8 mm (0.8 in)
1939
55.9 mm (2.2 in)
1940
24.9 mm (1.0 in)
1941
51.1 mm (2.0 in)
1942
19.3 mm (0.8 in)
1943
38.9 mm (1.5 in)
1944
15.0 mm (0.6 in)
1945
26.7 mm (1.1 in)
1946
32.0 mm (1.3 in)
1947
16.8 mm (0.7 in)
1948
34.8 mm (1.4 in)
1949
16.0 mm (0.6 in)
1950
38.6 mm (1.5 in)
1951
30.0 mm (1.2 in)
1952
40.4 mm (1.6 in)
1953
31.8 mm (1.3 in)
1954
15.5 mm (0.6 in)
1955
25.4 mm (1.0 in)
1956
33.5 mm (1.3 in)
1957
59.4 mm (2.3 in)
1958
25.7 mm (1.0 in)
1959
34.0 mm (1.3 in)
1960
31.8 mm (1.3 in)
1961
34.0 mm (1.3 in)
1962
42.9 mm (1.7 in)
1963
19.3 mm (0.8 in)
1964
65.5 mm (2.6 in)
1965
29.2 mm (1.1 in)
1966
31.8 mm (1.3 in)
1967
19.8 mm (0.8 in)
1968
16.5 mm (0.6 in)
1969
34.0 mm (1.3 in)
1970
20.8 mm (0.8 in)
1971
23.6 mm (0.9 in)
1972
43.9 mm (1.7 in)
1973
20.8 mm (0.8 in)
1974
18.8 mm (0.7 in)
1975
21.3 mm (0.8 in)
1976
18.8 mm (0.7 in)
1977
27.7 mm (1.1 in)
1978
20.6 mm (0.8 in)
1979
29.0 mm (1.1 in)
1980
24.1 mm (0.9 in)
1981
29.2 mm (1.1 in)
1982
24.6 mm (1.0 in)
1983
18.5 mm (0.7 in)
1984
24.6 mm (1.0 in)
1985
16.3 mm (0.6 in)
1986
29.0 mm (1.1 in)
1987
29.0 mm (1.1 in)
1988
28.2 mm (1.1 in)
1989
22.4 mm (0.9 in)
1990
31.2 mm (1.2 in)
1991
15.0 mm (0.6 in)
1992
22.1 mm (0.9 in)
1993
21.1 mm (0.8 in)
1994
16.0 mm (0.6 in)
1995
31.2 mm (1.2 in)
1996
26.4 mm (1.0 in)
1997
40.1 mm (1.6 in)
1998
23.4 mm (0.9 in)
1999
28.4 mm (1.1 in)
2000
41.7 mm (1.6 in)
2001
19.6 mm (0.8 in)
Wettest five days (Rx5day)
The wettest five days of the year at Klamath Falls 2 SSW, 1887 to 2001. The record is 162.0 mm (6.4 in) in 1964, marked on the chart; the median year is 49.3 mm (1.9 in).
Wettest five days (Rx5day) at Klamath Falls 2 SSW by year
Year
Wettest five days (Rx5day)
1887
17.0 mm (0.7 in)
1888
48.9 mm (1.9 in)
1889
40.7 mm (1.6 in)
1894
38.6 mm (1.5 in)
1895
26.3 mm (1.0 in)
1897
31.5 mm (1.2 in)
1898
28.4 mm (1.1 in)
1899
56.1 mm (2.2 in)
1900
22.8 mm (0.9 in)
1901
58.2 mm (2.3 in)
1902
54.4 mm (2.1 in)
1903
76.2 mm (3.0 in)
1904
50.8 mm (2.0 in)
1905
35.5 mm (1.4 in)
1906
125.7 mm (4.9 in)
1907
77.5 mm (3.1 in)
1908
57.0 mm (2.2 in)
1909
103.9 mm (4.1 in)
1910
67.0 mm (2.6 in)
1911
27.7 mm (1.1 in)
1912
45.2 mm (1.8 in)
1913
59.7 mm (2.4 in)
1914
72.1 mm (2.8 in)
1915
28.4 mm (1.1 in)
1916
40.9 mm (1.6 in)
1917
47.0 mm (1.9 in)
1918
38.9 mm (1.5 in)
1919
31.2 mm (1.2 in)
1920
55.3 mm (2.2 in)
1921
49.3 mm (1.9 in)
1922
49.8 mm (2.0 in)
1923
43.9 mm (1.7 in)
1924
57.4 mm (2.3 in)
1925
50.1 mm (2.0 in)
1926
80.6 mm (3.2 in)
1927
56.1 mm (2.2 in)
1928
58.5 mm (2.3 in)
1929
66.0 mm (2.6 in)
1930
46.4 mm (1.8 in)
1931
35.5 mm (1.4 in)
1932
28.7 mm (1.1 in)
1933
51.3 mm (2.0 in)
1934
38.9 mm (1.5 in)
1935
38.7 mm (1.5 in)
1936
56.9 mm (2.2 in)
1937
66.8 mm (2.6 in)
1938
42.5 mm (1.7 in)
1939
87.4 mm (3.4 in)
1940
50.8 mm (2.0 in)
1941
62.0 mm (2.4 in)
1942
51.5 mm (2.0 in)
1943
82.3 mm (3.2 in)
1944
39.7 mm (1.6 in)
1945
46.8 mm (1.8 in)
1946
40.4 mm (1.6 in)
1947
34.8 mm (1.4 in)
1948
49.3 mm (1.9 in)
1949
21.3 mm (0.8 in)
1950
76.2 mm (3.0 in)
1951
57.2 mm (2.3 in)
1952
70.4 mm (2.8 in)
1953
49.3 mm (1.9 in)
1954
33.3 mm (1.3 in)
1955
79.8 mm (3.1 in)
1956
51.2 mm (2.0 in)
1957
67.0 mm (2.6 in)
1958
45.7 mm (1.8 in)
1959
36.0 mm (1.4 in)
1960
49.0 mm (1.9 in)
1961
49.6 mm (2.0 in)
1962
105.1 mm (4.1 in)
1963
43.2 mm (1.7 in)
1964
162.0 mm (6.4 in)
1965
38.2 mm (1.5 in)
1966
63.1 mm (2.5 in)
1967
31.5 mm (1.2 in)
1968
30.3 mm (1.2 in)
1969
59.4 mm (2.3 in)
1970
59.9 mm (2.4 in)
1971
48.2 mm (1.9 in)
1972
79.4 mm (3.1 in)
1973
44.9 mm (1.8 in)
1974
49.8 mm (2.0 in)
1975
44.2 mm (1.7 in)
1976
33.8 mm (1.3 in)
1977
45.1 mm (1.8 in)
1978
38.4 mm (1.5 in)
1979
51.9 mm (2.0 in)
1980
48.0 mm (1.9 in)
1981
70.4 mm (2.8 in)
1982
44.6 mm (1.8 in)
1983
53.8 mm (2.1 in)
1984
39.6 mm (1.6 in)
1985
42.4 mm (1.7 in)
1986
76.9 mm (3.0 in)
1987
54.9 mm (2.2 in)
1988
46.4 mm (1.8 in)
1989
33.0 mm (1.3 in)
1990
47.7 mm (1.9 in)
1991
36.5 mm (1.4 in)
1992
50.8 mm (2.0 in)
1993
45.5 mm (1.8 in)
1994
32.8 mm (1.3 in)
1995
70.6 mm (2.8 in)
1996
43.9 mm (1.7 in)
1997
79.6 mm (3.1 in)
1998
61.2 mm (2.4 in)
1999
53.8 mm (2.1 in)
2000
76.8 mm (3.0 in)
2001
19.6 mm (0.8 in)
Longest dry spell (CDD)
The longest dry spell of the year at Klamath Falls 2 SSW, 1887 to 2001. The record is 139 days in 1951, marked on the chart; the median year is 55 days.
Longest dry spell (CDD) at Klamath Falls 2 SSW by year
Year
Longest dry spell (CDD)
1887
61 days
1888
15 days
1889
67 days
1894
32 days
1895
62 days
1897
7 days
1898
31 days
1899
83 days
1900
30 days
1901
62 days
1902
61 days
1903
33 days
1904
16 days
1905
56 days
1906
68 days
1907
56 days
1908
61 days
1909
69 days
1910
53 days
1911
77 days
1912
44 days
1913
38 days
1914
82 days
1915
47 days
1916
110 days
1917
77 days
1918
46 days
1919
74 days
1920
81 days
1921
81 days
1922
39 days
1923
48 days
1924
55 days
1925
29 days
1926
74 days
1927
62 days
1928
70 days
1929
127 days
1930
46 days
1931
70 days
1932
79 days
1933
73 days
1934
50 days
1935
50 days
1936
85 days
1937
39 days
1938
74 days
1939
66 days
1940
93 days
1941
39 days
1942
117 days
1943
53 days
1944
53 days
1945
87 days
1946
51 days
1947
40 days
1948
27 days
1949
42 days
1950
44 days
1951
139 days
1952
39 days
1953
59 days
1954
34 days
1955
46 days
1956
26 days
1957
37 days
1958
26 days
1959
55 days
1960
62 days
1961
54 days
1962
54 days
1963
41 days
1964
56 days
1965
52 days
1966
35 days
1967
87 days
1968
30 days
1969
55 days
1970
106 days
1971
45 days
1972
66 days
1973
53 days
1974
61 days
1975
46 days
1976
44 days
1977
53 days
1978
62 days
1979
33 days
1980
74 days
1981
110 days
1982
44 days
1983
29 days
1984
50 days
1985
58 days
1986
69 days
1987
58 days
1988
101 days
1989
26 days
1990
25 days
1991
63 days
1992
47 days
1993
69 days
1994
96 days
1995
118 days
1996
31 days
1997
27 days
1998
62 days
1999
65 days
2000
33 days
2001
19 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 Klamath Falls 2 SSW falls on 1 June and the median first autumn frost on 21 September, which leaves a median of 115 days between them.
In 1966 to 1997 the median growing season was 118 days. That is 6 days more than in 1901 to 1934.
Fitted over all years, the growing season changes by +2.0 days per decade at this station.
Frost dates and growing season at Klamath Falls 2 SSW
Measure
Median, all years
Earliest period (1901 to 1934)
Recent period (1966 to 1997)
Recent against earliest
Fitted trend
Last spring frost
1 June
4 June
2 June
2 days earlier
0.0 days per decade
First autumn frost
21 September
19 September
21 September
2 days later
+2.0 days per decade
Growing days
115 days
112 days
118 days
6 days more
+2.0 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
91 years, 1902 to 1997
A day with at least 26.3 mm (1.0 in) of rain is expected about once in 2 years. A day with at least 60.4 mm (2.4 in) of rain is expected about once in 100 years.
Rainfall return levels at Klamath Falls 2 SSW: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
26.3 mm (1.0 in)
5 years
34.9 mm (1.4 in)
10 years
40.8 mm (1.6 in)
25 years
48.5 mm (1.9 in)
50 years
54.4 mm (2.1 in)
100 years
60.4 mm (2.4 in)
Longer than the 91 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, 91 years of values from 1902 to 1997.
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: 65.5 mm (2.6 in) in 1964; 59.4 mm (2.3 in) in 1957; 55.9 mm (2.2 in) in 1939.
Station Changes
1 suspected
One change was suspected in the annual mean temperature of Klamath Falls 2 SSW, at 1971. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1971 ran 0.3 C (0.6 F) higher than in the years before (likely change).
Suspected changes in the annual mean temperature at Klamath Falls 2 SSW, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1971
+0.3
+0.6
likely
5
Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.
Download the Data
Data for Klamath Falls 2 SSW standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Klamath Falls 2 SSW 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.