Record envelope, standing records and threshold days for Klamath (USC00044577), California, United States, with 59 years of record.
Key Facts for Klamath
Klamath (USC00044577) is a weather station in California, United States at 41.58 latitude and -124.07 longitude, 9 m (28 ft) above sea level.
The station reports from 1948 to 2006, 59 years of record.
1,464 records set at Klamath still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Klamath set a daily record low maximum temperature of 7.2 C (45.0 F) on 29 November 2006.
About the Station
Location: California, United States, 41.58 latitude, -124.07 longitude.
Elevation: 9 m (28 ft).
Period of record: 1948 to 2006, 59 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. 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, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
23.9 C (75.0 F)
-7.8 C (18.0 F)
n/a
n/a
Feb
27.8 C (82.0 F)
-7.2 C (19.0 F)
n/a
n/a
Mar
27.2 C (81.0 F)
-4.4 C (24.1 F)
n/a
n/a
Apr
29.4 C (84.9 F)
-2.8 C (27.0 F)
n/a
n/a
May
30.0 C (86.0 F)
-4.4 C (24.1 F)
n/a
n/a
Jun
30.6 C (87.1 F)
0.6 C (33.1 F)
n/a
n/a
Jul
30.6 C (87.1 F)
1.1 C (34.0 F)
n/a
n/a
Aug
30.6 C (87.1 F)
2.2 C (36.0 F)
n/a
n/a
Sep
35.0 C (95.0 F)
-1.7 C (28.9 F)
n/a
n/a
Oct
36.7 C (98.1 F)
-2.2 C (28.0 F)
n/a
n/a
Nov
25.6 C (78.1 F)
-5.6 C (21.9 F)
n/a
n/a
Dec
22.2 C (72.0 F)
-8.9 C (16.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Klamath still stand. 2003 holds the most, with 268.
Standing records at Klamath by the year they were set
Year set
Standing records
1949
4
1950
38
1951
21
1952
23
1953
23
1954
16
1955
32
1956
13
1957
20
1958
33
1959
14
1960
21
1961
14
1962
27
1963
22
1964
17
1965
23
1966
19
1967
14
1968
32
1969
23
1970
29
1971
26
1972
24
1973
15
1974
20
1975
21
1976
11
1977
21
1978
29
1979
27
1980
19
1981
14
1982
18
1983
15
1984
17
1985
30
1986
19
1987
28
1988
17
1989
31
1990
39
1991
20
1992
29
1993
34
1994
12
1995
11
1996
20
1997
8
1998
14
1999
31
2000
11
2001
8
2002
32
2003
268
2004
30
2005
8
2006
9
All-Time Record Progression
6 new records
6 all-time records were set at Klamath between 3 February 1989 and 8 August 1992. Each dot is a new record.
When Klamath set new all-time records
Date
Kind
Detail
1989-02-03
Record daily snowfall
Record daily snowfall 31.8 cm (12.5 in)
1989-02-03
Record snow depth
Record snow depth 17.8 cm (7.0 in)
1989-02-04
Record snow depth
Record snow depth 20.3 cm (8.0 in)
1990-05-02
Record high minimum temperature
Record high minimum temperature 18.3 C (64.9 F)
1991-10-10
Record high maximum temperature
Record high maximum temperature 36.7 C (98.1 F)
1992-08-08
Record high minimum temperature
Record high minimum temperature 19.4 C (66.9 F)
Wettest Day of Each Month
Jan: 249.4 mm (9.8 in)
The wettest day on record for each calendar month at Klamath. The most was 249.4 mm (9.8 in) on 17 January 1953.
Record daily precipitation for each month at Klamath
Month
Record daily precipitation (mm)
Date
Jan
249.4 mm (9.8 in)
17 January 1953
Feb
114.8 mm (4.5 in)
20 February 1956
Mar
226.1 mm (8.9 in)
2 March 1972
Apr
104.6 mm (4.1 in)
1 April 1974
May
107.7 mm (4.2 in)
1 May 1949
Jun
91.4 mm (3.6 in)
25 June 1971
Jul
81.0 mm (3.2 in)
1 July 1983
Aug
71.1 mm (2.8 in)
25 August 1968
Sep
141.7 mm (5.6 in)
28 September 1977
Oct
175.8 mm (6.9 in)
28 October 1950
Nov
228.1 mm (9.0 in)
21 November 1998
Dec
208.5 mm (8.2 in)
30 December 1954
Period of Record Coverage
1949 to 2006
Complete yearUnder 90 percent of days
58 years of record at Klamath, 1949 to 2006. 6 years have data for under 90 percent of days and are left out of rankings: 1949, 1965, 1990, 2004, 2005, 2006.
Cooler than the station meanWarmer than the station mean
One stripe for each of 50 complete years at Klamath, 1950 to 2003. Blue stripes are years cooler than the station's own mean of 11.5 C (52.6 F); red stripes are warmer. The coolest year was 2003, at 7.3 C (45.1 F), and the warmest was 1958, at 12.7 C (54.9 F). The strongest colour marks a difference of 4.2 C (7.6 F).
Annual mean temperature at Klamath as warming stripes, 1950 to 2003
Year
Annual mean temperature
Difference from the station mean
1950
11.4 C
-0.07 C
1951
11.1 C
-0.34 C
1952
10.9 C
-0.56 C
1953
11.9 C
+0.38 C
1954
11.6 C
+0.15 C
1955
10.7 C
-0.78 C
1956
11.3 C
-0.19 C
1957
11.8 C
+0.33 C
1958
12.7 C
+1.26 C
1959
11.7 C
+0.21 C
1960
11.5 C
-0.02 C
1961
11.6 C
+0.16 C
1962
11.5 C
+0.01 C
1963
12.0 C
+0.53 C
1966
11.6 C
+0.08 C
1967
11.4 C
-0.09 C
1968
11.7 C
+0.21 C
1969
11.4 C
-0.11 C
1970
11.5 C
0.00 C
1971
10.6 C
-0.88 C
1972
11.1 C
-0.40 C
1973
11.2 C
-0.32 C
1974
10.9 C
-0.57 C
1975
10.7 C
-0.76 C
1976
11.1 C
-0.37 C
1977
11.5 C
+0.02 C
1978
12.1 C
+0.60 C
1979
12.2 C
+0.68 C
1980
12.1 C
+0.59 C
1981
12.2 C
+0.77 C
1982
11.4 C
-0.11 C
1983
12.5 C
+1.00 C
1984
11.8 C
+0.28 C
1985
11.3 C
-0.15 C
1986
12.2 C
+0.73 C
1987
12.1 C
+0.59 C
1988
12.0 C
+0.48 C
1989
12.1 C
+0.62 C
1991
12.1 C
+0.66 C
1993
11.7 C
+0.19 C
1994
10.9 C
-0.59 C
1995
11.9 C
+0.38 C
1996
11.3 C
-0.21 C
1997
11.7 C
+0.23 C
1998
10.9 C
-0.59 C
1999
11.0 C
-0.46 C
2000
12.0 C
+0.53 C
2001
11.6 C
+0.16 C
2002
11.4 C
-0.05 C
2003
7.3 C
-4.18 C
The fitted trend in annual mean temperature here over 1950 to 2003 is -0.1 C (-0.2 to 0.1) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.1 F (-0.4 to 0.2) per decade. The slope is a straight line fitted to 50 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Klamath
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.1 C (-0.2 to 0.1) per decade
-0.1 F (-0.4 to 0.2) per decade
1950 to 2003
50
Not clearly different from zero
Mean daily maximum
-0.1 C (-0.2 to 0.1) per decade
-0.1 F (-0.4 to 0.1) per decade
1950 to 2003
50
Not clearly different from zero
Mean daily minimum
-0.04 C (-0.19 to 0.12) per decade
-0.1 F (-0.3 to 0.2) per decade
1950 to 2003
50
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
1948 to 2006
Yearly extremes at Klamath: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
36.7 C (98.1 F)
1991
29.4 C (84.9 F)
58
Coldest night (TNn)
-8.9 C (16.0 F)
1972
-2.8 C (27.0 F)
58
Wettest day (Rx1day)
249.4 mm (9.8 in)
1953
103.6 mm (4.1 in)
59
Wettest five days (Rx5day)
540.6 mm (21.3 in)
1953
234.6 mm (9.2 in)
59
Longest dry spell (CDD)
110 days
1974
53 days
59
Hottest day (TXx)
The hottest day of the year at Klamath, 1948 to 2006. The record is 36.7 C (98.1 F) in 1991, marked on the chart; the median year is 29.4 C (84.9 F).
Hottest day (TXx) at Klamath by year
Year
Hottest day (TXx)
1948
n/a
1949
22.8 C (73.0 F)
1950
29.4 C (84.9 F)
1951
28.9 C (84.0 F)
1952
28.9 C (84.0 F)
1953
27.8 C (82.0 F)
1954
27.8 C (82.0 F)
1955
28.9 C (84.0 F)
1956
32.2 C (90.0 F)
1957
27.2 C (81.0 F)
1958
32.2 C (90.0 F)
1959
27.8 C (82.0 F)
1960
30.6 C (87.1 F)
1961
27.8 C (82.0 F)
1962
26.1 C (79.0 F)
1963
28.9 C (84.0 F)
1964
35.0 C (95.0 F)
1965
29.4 C (84.9 F)
1966
32.2 C (90.0 F)
1967
30.6 C (87.1 F)
1968
27.8 C (82.0 F)
1969
29.4 C (84.9 F)
1970
32.8 C (91.0 F)
1971
31.7 C (89.1 F)
1972
28.3 C (82.9 F)
1973
30.6 C (87.1 F)
1974
28.9 C (84.0 F)
1975
29.4 C (84.9 F)
1976
29.4 C (84.9 F)
1977
26.7 C (80.1 F)
1978
32.2 C (90.0 F)
1979
34.4 C (93.9 F)
1980
31.7 C (89.1 F)
1981
25.6 C (78.1 F)
1982
30.0 C (86.0 F)
1983
32.8 C (91.0 F)
1984
31.7 C (89.1 F)
1985
30.6 C (87.1 F)
1986
28.9 C (84.0 F)
1987
32.2 C (90.0 F)
1988
30.6 C (87.1 F)
1989
29.4 C (84.9 F)
1990
31.7 C (89.1 F)
1991
36.7 C (98.1 F)
1992
28.3 C (82.9 F)
1993
29.4 C (84.9 F)
1994
25.6 C (78.1 F)
1995
30.6 C (87.1 F)
1996
28.9 C (84.0 F)
1997
26.1 C (79.0 F)
1998
27.2 C (81.0 F)
1999
28.9 C (84.0 F)
2000
32.2 C (90.0 F)
2001
28.9 C (84.0 F)
2002
30.6 C (87.1 F)
2003
25.0 C (77.0 F)
2004
30.0 C (86.0 F)
2005
27.2 C (81.0 F)
2006
27.2 C (81.0 F)
Coldest night (TNn)
The coldest night of the year at Klamath, 1948 to 2006. The record is -8.9 C (16.0 F) in 1972, marked on the chart; the median year is -2.8 C (27.0 F).
Coldest night (TNn) at Klamath by year
Year
Coldest night (TNn)
1948
n/a
1949
-1.7 C (28.9 F)
1950
-4.4 C (24.1 F)
1951
-4.4 C (24.1 F)
1952
-1.7 C (28.9 F)
1953
-2.2 C (28.0 F)
1954
-2.2 C (28.0 F)
1955
-2.8 C (27.0 F)
1956
-3.9 C (25.0 F)
1957
-4.4 C (24.1 F)
1958
-2.2 C (28.0 F)
1959
-2.8 C (27.0 F)
1960
-2.8 C (27.0 F)
1961
-2.8 C (27.0 F)
1962
-7.8 C (18.0 F)
1963
-6.1 C (21.0 F)
1964
-2.2 C (28.0 F)
1965
-3.3 C (26.1 F)
1966
-2.2 C (28.0 F)
1967
-5.0 C (23.0 F)
1968
-2.8 C (27.0 F)
1969
-2.8 C (27.0 F)
1970
-2.2 C (28.0 F)
1971
-3.3 C (26.1 F)
1972
-8.9 C (16.0 F)
1973
-2.2 C (28.0 F)
1974
-3.9 C (25.0 F)
1975
-3.9 C (25.0 F)
1976
-5.0 C (23.0 F)
1977
-3.3 C (26.1 F)
1978
-5.6 C (21.9 F)
1979
-3.9 C (25.0 F)
1980
-5.6 C (21.9 F)
1981
-0.6 C (30.9 F)
1982
-2.8 C (27.0 F)
1983
-3.3 C (26.1 F)
1984
-1.7 C (28.9 F)
1985
-2.8 C (27.0 F)
1986
-0.6 C (30.9 F)
1987
-3.3 C (26.1 F)
1988
-1.1 C (30.0 F)
1989
-7.2 C (19.0 F)
1990
-7.8 C (18.0 F)
1991
-2.8 C (27.0 F)
1992
-0.6 C (30.9 F)
1993
-3.3 C (26.1 F)
1994
-2.8 C (27.0 F)
1995
-1.7 C (28.9 F)
1996
-2.2 C (28.0 F)
1997
-3.9 C (25.0 F)
1998
-6.7 C (19.9 F)
1999
-2.2 C (28.0 F)
2000
-1.1 C (30.0 F)
2001
-2.2 C (28.0 F)
2002
-2.8 C (27.0 F)
2003
-6.1 C (21.0 F)
2004
-3.3 C (26.1 F)
2005
-2.2 C (28.0 F)
2006
-3.3 C (26.1 F)
Wettest day (Rx1day)
The wettest day of the year at Klamath, 1948 to 2006. The record is 249.4 mm (9.8 in) in 1953, marked on the chart; the median year is 103.6 mm (4.1 in).
Wettest day (Rx1day) at Klamath by year
Year
Wettest day (Rx1day)
1948
114.6 mm (4.5 in)
1949
107.7 mm (4.2 in)
1950
175.8 mm (6.9 in)
1951
94.0 mm (3.7 in)
1952
88.4 mm (3.5 in)
1953
249.4 mm (9.8 in)
1954
208.5 mm (8.2 in)
1955
106.7 mm (4.2 in)
1956
114.8 mm (4.5 in)
1957
119.4 mm (4.7 in)
1958
102.9 mm (4.1 in)
1959
108.5 mm (4.3 in)
1960
100.1 mm (3.9 in)
1961
89.9 mm (3.5 in)
1962
84.6 mm (3.3 in)
1963
115.1 mm (4.5 in)
1964
114.3 mm (4.5 in)
1965
70.4 mm (2.8 in)
1966
111.8 mm (4.4 in)
1967
93.0 mm (3.7 in)
1968
85.1 mm (3.4 in)
1969
134.6 mm (5.3 in)
1970
149.9 mm (5.9 in)
1971
106.7 mm (4.2 in)
1972
226.1 mm (8.9 in)
1973
108.7 mm (4.3 in)
1974
104.6 mm (4.1 in)
1975
140.7 mm (5.5 in)
1976
97.3 mm (3.8 in)
1977
141.7 mm (5.6 in)
1978
80.8 mm (3.2 in)
1979
83.8 mm (3.3 in)
1980
103.6 mm (4.1 in)
1981
101.6 mm (4.0 in)
1982
88.9 mm (3.5 in)
1983
130.3 mm (5.1 in)
1984
79.2 mm (3.1 in)
1985
104.6 mm (4.1 in)
1986
113.3 mm (4.5 in)
1987
75.7 mm (3.0 in)
1988
112.0 mm (4.4 in)
1989
64.5 mm (2.5 in)
1990
81.5 mm (3.2 in)
1991
70.9 mm (2.8 in)
1992
80.0 mm (3.1 in)
1993
80.5 mm (3.2 in)
1994
58.2 mm (2.3 in)
1995
179.6 mm (7.1 in)
1996
140.5 mm (5.5 in)
1997
154.7 mm (6.1 in)
1998
228.1 mm (9.0 in)
1999
68.8 mm (2.7 in)
2000
70.6 mm (2.8 in)
2001
70.1 mm (2.8 in)
2002
99.1 mm (3.9 in)
2003
144.8 mm (5.7 in)
2004
100.6 mm (4.0 in)
2005
51.6 mm (2.0 in)
2006
59.7 mm (2.4 in)
Wettest five days (Rx5day)
The wettest five days of the year at Klamath, 1948 to 2006. The record is 540.6 mm (21.3 in) in 1953, marked on the chart; the median year is 234.6 mm (9.2 in).
Wettest five days (Rx5day) at Klamath by year
Year
Wettest five days (Rx5day)
1948
243.4 mm (9.6 in)
1949
149.1 mm (5.9 in)
1950
443.7 mm (17.5 in)
1951
212.2 mm (8.4 in)
1952
179.0 mm (7.0 in)
1953
540.6 mm (21.3 in)
1954
292.6 mm (11.5 in)
1955
275.1 mm (10.8 in)
1956
305.8 mm (12.0 in)
1957
268.5 mm (10.6 in)
1958
325.3 mm (12.8 in)
1959
261.6 mm (10.3 in)
1960
215.7 mm (8.5 in)
1961
253.2 mm (10.0 in)
1962
217.4 mm (8.6 in)
1963
247.4 mm (9.7 in)
1964
239.3 mm (9.4 in)
1965
159.8 mm (6.3 in)
1966
364.5 mm (14.4 in)
1967
208.1 mm (8.2 in)
1968
196.1 mm (7.7 in)
1969
223.5 mm (8.8 in)
1970
386.2 mm (15.2 in)
1971
243.8 mm (9.6 in)
1972
457.3 mm (18.0 in)
1973
291.3 mm (11.5 in)
1974
273.3 mm (10.8 in)
1975
268.2 mm (10.6 in)
1976
201.6 mm (7.9 in)
1977
211.9 mm (8.3 in)
1978
194.6 mm (7.7 in)
1979
160.3 mm (6.3 in)
1980
201.9 mm (7.9 in)
1981
213.9 mm (8.4 in)
1982
224.1 mm (8.8 in)
1983
271.5 mm (10.7 in)
1984
227.6 mm (9.0 in)
1985
234.6 mm (9.2 in)
1986
316.6 mm (12.5 in)
1987
209.5 mm (8.2 in)
1988
213.8 mm (8.4 in)
1989
135.1 mm (5.3 in)
1990
180.5 mm (7.1 in)
1991
179.6 mm (7.1 in)
1992
212.8 mm (8.4 in)
1993
221.4 mm (8.7 in)
1994
130.6 mm (5.1 in)
1995
303.6 mm (12.0 in)
1996
320.3 mm (12.6 in)
1997
273.6 mm (10.8 in)
1998
357.9 mm (14.1 in)
1999
167.3 mm (6.6 in)
2000
267.5 mm (10.5 in)
2001
201.6 mm (7.9 in)
2002
290.8 mm (11.4 in)
2003
298.5 mm (11.8 in)
2004
303.8 mm (12.0 in)
2005
126.0 mm (5.0 in)
2006
129.2 mm (5.1 in)
Longest dry spell (CDD)
The longest dry spell of the year at Klamath, 1948 to 2006. The record is 110 days in 1974, marked on the chart; the median year is 53 days.
Longest dry spell (CDD) at Klamath by year
Year
Longest dry spell (CDD)
1948
41 days
1949
59 days
1950
76 days
1951
49 days
1952
38 days
1953
73 days
1954
50 days
1955
48 days
1956
57 days
1957
53 days
1958
53 days
1959
78 days
1960
87 days
1961
54 days
1962
61 days
1963
54 days
1964
46 days
1965
58 days
1966
49 days
1967
100 days
1968
39 days
1969
83 days
1970
67 days
1971
42 days
1972
38 days
1973
67 days
1974
110 days
1975
43 days
1976
30 days
1977
89 days
1978
44 days
1979
40 days
1980
83 days
1981
96 days
1982
49 days
1983
57 days
1984
61 days
1985
44 days
1986
72 days
1987
96 days
1988
101 days
1989
22 days
1990
42 days
1991
54 days
1992
65 days
1993
51 days
1994
48 days
1995
26 days
1996
48 days
1997
50 days
1998
84 days
1999
80 days
2000
33 days
2001
32 days
2002
79 days
2003
50 days
2004
39 days
2005
53 days
2006
15 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
45 years with a frost
Across 45 years with a frost, the median last spring frost at Klamath falls on 22 March and the median first autumn frost on 27 November, which leaves a median of 247 days between them.
Fitted over all years, the growing season changes by -1.1 days per decade at this station.
Frost dates and growing season at Klamath
Measure
Median, all years
Earliest period
Recent period (1970 to 2003)
Recent against earliest
Fitted trend
Last spring frost
22 March
n/a
28 March
n/a
-0.4 days per decade
First autumn frost
27 November
n/a
19 November
n/a
-1.5 days per decade
Growing days
247 days
n/a
241 days
n/a
-1.1 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
54 years, 1949 to 2003
A day with at least 102.8 mm (4.0 in) of rain is expected about once in 2 years. A day with at least 282.2 mm (11.1 in) of rain is expected about once in 100 years.
Rainfall return levels at Klamath: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
102.8 mm (4.0 in)
5 years
137.6 mm (5.4 in)
10 years
165.1 mm (6.5 in)
25 years
206.1 mm (8.1 in)
50 years
241.7 mm (9.5 in)
100 years
282.2 mm (11.1 in)
Longer than the 54 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, 54 years of values from 1949 to 2003.
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: 249.4 mm (9.8 in) in 1953; 228.1 mm (9.0 in) in 1998; 226.1 mm (8.9 in) in 1972.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Klamath standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Klamath 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.