Record envelope, standing records and threshold days for Ft Ross (USC00043191), California, United States, with 132 years of record.
Key Facts for Ft Ross
Ft Ross (USC00043191) is a weather station in California, United States at 38.52 latitude and -123.24 longitude, 34 m (112 ft) above sea level.
The station reports from 1895 to 2026, 132 years of record.
1,464 records set at Ft Ross still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Ft Ross tied a daily record low maximum temperature of 14.4 C (57.9 F) on 6 July 2026.
About the Station
Location: California, United States, 38.52 latitude, -123.24 longitude.
Elevation: 34 m (112 ft).
Period of record: 1895 to 2026, 132 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
2 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 Ft Ross. The lines show the 2026 daily maximum and minimum. 2 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Ft Ross, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
28.3 C (82.9 F)
-5.6 C (21.9 F)
17.8 C (64.0 F)
3.3 C (37.9 F)
Feb
26.1 C (79.0 F)
-6.7 C (19.9 F)
22.8 C (73.0 F)
1.7 C (35.1 F)
Mar
25.6 C (78.1 F)
-6.1 C (21.0 F)
22.2 C (72.0 F)
3.3 C (37.9 F)
Apr
30.0 C (86.0 F)
-3.3 C (26.1 F)
22.8 C (73.0 F)
3.9 C (39.0 F)
May
29.4 C (84.9 F)
-3.3 C (26.1 F)
23.3 C (73.9 F)
5.0 C (41.0 F)
Jun
31.7 C (89.1 F)
-0.6 C (30.9 F)
20.0 C (68.0 F)
6.7 C (44.1 F)
Jul
31.1 C (88.0 F)
1.7 C (35.1 F)
25.0 C (77.0 F)
5.6 C (42.1 F)
Aug
33.3 C (91.9 F)
-1.7 C (28.9 F)
21.7 C (71.1 F)
7.2 C (45.0 F)
Sep
36.1 C (97.0 F)
-1.1 C (30.0 F)
21.1 C (70.0 F)
8.3 C (46.9 F)
Oct
33.9 C (93.0 F)
-3.9 C (25.0 F)
n/a
n/a
Nov
31.1 C (88.0 F)
-4.4 C (24.1 F)
n/a
n/a
Dec
24.4 C (75.9 F)
-6.7 C (19.9 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Ft Ross still stand. 2020 holds the most, with 123.
Standing records at Ft Ross by the year they were set
Year set
Standing records
1897
19
1898
18
1899
30
1900
27
1901
26
1902
30
1903
18
1904
21
1905
6
1906
5
1907
20
1908
11
1950
14
1951
11
1952
20
1953
10
1954
6
1955
16
1956
15
1957
16
1958
35
1959
13
1960
11
1961
14
1962
15
1963
15
1964
15
1965
20
1966
13
1967
18
1968
16
1969
10
1970
14
1971
16
1972
21
1973
11
1974
11
1975
14
1976
12
1977
17
1978
20
1979
13
1980
18
1981
24
1982
10
1983
13
1984
6
1985
35
1986
35
1987
50
1988
18
1989
16
1990
25
1991
13
1992
15
1993
19
1994
17
1995
21
1996
16
1997
10
1998
8
1999
10
2000
7
2001
4
2002
32
2003
15
2004
9
2005
11
2006
10
2007
15
2008
10
2009
7
2010
7
2011
11
2012
8
2013
10
2014
15
2015
7
2016
5
2017
9
2018
10
2019
34
2020
123
2021
6
2022
9
2023
13
2024
4
2025
7
2026
4
All-Time Record Progression
3 new records
3 all-time records were set at Ft Ross between 8 December 1972 and 26 August 1981. Each dot is a new record.
When Ft Ross set new all-time records
Date
Kind
Detail
1972-12-08
Record low maximum temperature
Record low maximum temperature 4.4 C (39.9 F)
1972-12-08
Record low minimum temperature
Record low minimum temperature -6.7 C (19.9 F)
1981-08-26
Record high minimum temperature
Record high minimum temperature 20.6 C (69.1 F)
Wettest Day of Each Month
Nov: 223.8 mm (8.8 in)
The wettest day on record for each calendar month at Ft Ross. The most was 223.8 mm (8.8 in) on 18 November 1920.
Record daily precipitation for each month at Ft Ross
Month
Record daily precipitation (mm)
Date
Jan
194.8 mm (7.7 in)
21 January 1914
Feb
198.1 mm (7.8 in)
28 February 2019
Mar
164.8 mm (6.5 in)
10 March 1904
Apr
107.4 mm (4.2 in)
27 April 1953
May
93.2 mm (3.7 in)
31 May 1899
Jun
76.2 mm (3.0 in)
14 June 1920
Jul
64.3 mm (2.5 in)
8 July 1974
Aug
35.1 mm (1.4 in)
20 August 1997
Sep
90.9 mm (3.6 in)
5 September 1912
Oct
104.6 mm (4.1 in)
9 October 1957
Nov
223.8 mm (8.8 in)
18 November 1920
Dec
159.8 mm (6.3 in)
27 December 1945
Period of Record Coverage
1897 to 2026
Complete yearUnder 90 percent of days
89 years of record at Ft Ross, 1897 to 2026. 42 years have data for under 90 percent of days and are left out of rankings: 1897, 1903, 1907, 1908, 1950, 1973, 1987, 1988 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 51 complete years at Ft Ross, 1899 to 2022. Blue stripes are years cooler than the station's own mean of 12.1 C (53.8 F); red stripes are warmer. The coolest year was 1975, at 10.9 C (51.6 F), and the warmest was 1958, at 13.9 C (57.0 F). The strongest colour marks a difference of 1.8 C (3.2 F).
Annual mean temperature at Ft Ross as warming stripes, 1899 to 2022
Year
Annual mean temperature
Difference from the station mean
1899
12.0 C
-0.08 C
1900
12.9 C
+0.84 C
1901
12.4 C
+0.30 C
1902
12.7 C
+0.58 C
1904
12.2 C
+0.12 C
1951
12.0 C
-0.13 C
1952
11.8 C
-0.34 C
1953
12.6 C
+0.50 C
1954
12.4 C
+0.27 C
1955
11.8 C
-0.26 C
1956
12.4 C
+0.25 C
1957
13.0 C
+0.87 C
1958
13.9 C
+1.79 C
1959
13.0 C
+0.85 C
1960
11.9 C
-0.19 C
1961
12.0 C
-0.07 C
1962
11.5 C
-0.62 C
1963
12.1 C
+0.04 C
1964
11.4 C
-0.70 C
1965
11.9 C
-0.20 C
1966
12.0 C
-0.09 C
1967
11.8 C
-0.26 C
1968
12.0 C
-0.10 C
1969
11.9 C
-0.24 C
1970
11.9 C
-0.17 C
1971
11.0 C
-1.06 C
1972
11.6 C
-0.48 C
1974
11.7 C
-0.42 C
1975
10.9 C
-1.22 C
1976
11.6 C
-0.48 C
1977
12.1 C
-0.02 C
1979
12.4 C
+0.28 C
1980
12.2 C
+0.07 C
1981
13.0 C
+0.85 C
1982
12.0 C
-0.09 C
1983
13.3 C
+1.22 C
1985
11.0 C
-1.06 C
1986
11.1 C
-1.02 C
1990
11.6 C
-0.47 C
1991
11.1 C
-1.00 C
1992
12.6 C
+0.53 C
1993
11.9 C
-0.18 C
1994
11.2 C
-0.86 C
1995
13.1 C
+0.95 C
1996
12.7 C
+0.61 C
1997
13.3 C
+1.19 C
1998
12.3 C
+0.24 C
2001
12.0 C
-0.12 C
2008
11.8 C
-0.30 C
2021
12.3 C
+0.24 C
2022
11.8 C
-0.33 C
The fitted trend in annual mean temperature here over 1899 to 2022 is -0.04 C (-0.10 to 0.03) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.07 F (-0.19 to 0.05) per decade. The slope is a straight line fitted to 51 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Ft Ross
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.04 C (-0.10 to 0.03) per decade
-0.07 F (-0.19 to 0.05) per decade
1899 to 2022
51
Not clearly different from zero
Mean daily maximum
0.02 C (-0.06 to 0.11) per decade
0.04 F (-0.11 to 0.19) per decade
1899 to 2022
51
Not clearly different from zero
Mean daily minimum
-0.10 C (-0.19 to -0.01) per decade
-0.18 F (-0.35 to -0.02) per decade
1899 to 2022
51
Fall
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 2026
Yearly extremes at Ft Ross: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
36.1 C (97.0 F)
1950
28.9 C (84.0 F)
89
Coldest night (TNn)
-6.7 C (19.9 F)
1972
-1.1 C (30.0 F)
89
Wettest day (Rx1day)
223.8 mm (8.8 in)
1920
80.2 mm (3.2 in)
132
Wettest five days (Rx5day)
407.9 mm (16.1 in)
1920
145.2 mm (5.7 in)
131
Longest dry spell (CDD)
149 days
2008
74 days
132
Hottest day (TXx)
The hottest day of the year at Ft Ross, 1895 to 2026. The record is 36.1 C (97.0 F) in 1950, marked on the chart; the median year is 28.9 C (84.0 F).
Hottest day (TXx) at Ft Ross by year
Year
Hottest day (TXx)
1895
n/a
1896
n/a
1897
28.9 C (84.0 F)
1898
31.1 C (88.0 F)
1899
28.3 C (82.9 F)
1900
31.1 C (88.0 F)
1901
30.6 C (87.1 F)
1902
30.0 C (86.0 F)
1903
26.1 C (79.0 F)
1904
31.7 C (89.1 F)
1905
26.7 C (80.1 F)
1906
22.8 C (73.0 F)
1907
26.7 C (80.1 F)
1908
26.7 C (80.1 F)
1909
n/a
1910
n/a
1911
n/a
1912
n/a
1913
n/a
1914
n/a
1915
n/a
1916
n/a
1917
n/a
1918
n/a
1919
n/a
1920
n/a
1921
n/a
1922
n/a
1923
n/a
1924
n/a
1925
n/a
1926
n/a
1927
n/a
1928
n/a
1929
n/a
1930
n/a
1931
n/a
1932
n/a
1933
n/a
1934
n/a
1935
n/a
1936
n/a
1937
n/a
1938
n/a
1939
n/a
1940
n/a
1941
n/a
1942
n/a
1943
n/a
1944
n/a
1945
n/a
1946
n/a
1947
n/a
1948
n/a
1949
n/a
1950
36.1 C (97.0 F)
1951
30.6 C (87.1 F)
1952
27.2 C (81.0 F)
1953
29.4 C (84.9 F)
1954
30.0 C (86.0 F)
1955
26.7 C (80.1 F)
1956
27.8 C (82.0 F)
1957
26.7 C (80.1 F)
1958
31.7 C (89.1 F)
1959
27.2 C (81.0 F)
1960
30.6 C (87.1 F)
1961
32.2 C (90.0 F)
1962
25.6 C (78.1 F)
1963
23.9 C (75.0 F)
1964
32.8 C (91.0 F)
1965
32.2 C (90.0 F)
1966
28.3 C (82.9 F)
1967
30.0 C (86.0 F)
1968
29.4 C (84.9 F)
1969
26.7 C (80.1 F)
1970
30.6 C (87.1 F)
1971
33.9 C (93.0 F)
1972
27.2 C (81.0 F)
1973
30.0 C (86.0 F)
1974
27.8 C (82.0 F)
1975
26.1 C (79.0 F)
1976
30.6 C (87.1 F)
1977
26.7 C (80.1 F)
1978
27.8 C (82.0 F)
1979
31.1 C (88.0 F)
1980
30.6 C (87.1 F)
1981
25.6 C (78.1 F)
1982
27.2 C (81.0 F)
1983
31.1 C (88.0 F)
1984
31.1 C (88.0 F)
1985
30.6 C (87.1 F)
1986
25.6 C (78.1 F)
1987
26.1 C (79.0 F)
1988
28.9 C (84.0 F)
1989
26.1 C (79.0 F)
1990
27.8 C (82.0 F)
1991
30.6 C (87.1 F)
1992
30.0 C (86.0 F)
1993
31.1 C (88.0 F)
1994
28.3 C (82.9 F)
1995
31.7 C (89.1 F)
1996
30.0 C (86.0 F)
1997
29.4 C (84.9 F)
1998
27.2 C (81.0 F)
1999
25.0 C (77.0 F)
2000
30.0 C (86.0 F)
2001
28.9 C (84.0 F)
2002
31.1 C (88.0 F)
2003
33.9 C (93.0 F)
2004
30.6 C (87.1 F)
2005
27.8 C (82.0 F)
2006
26.1 C (79.0 F)
2007
27.8 C (82.0 F)
2008
28.9 C (84.0 F)
2009
27.8 C (82.0 F)
2010
29.4 C (84.9 F)
2011
28.9 C (84.0 F)
2012
26.7 C (80.1 F)
2013
27.8 C (82.0 F)
2014
30.6 C (87.1 F)
2015
24.4 C (75.9 F)
2016
33.9 C (93.0 F)
2017
33.3 C (91.9 F)
2018
25.6 C (78.1 F)
2019
31.7 C (89.1 F)
2020
31.1 C (88.0 F)
2021
28.3 C (82.9 F)
2022
23.9 C (75.0 F)
2023
30.6 C (87.1 F)
2024
30.6 C (87.1 F)
2025
31.7 C (89.1 F)
2026
25.0 C (77.0 F)
Coldest night (TNn)
The coldest night of the year at Ft Ross, 1895 to 2026. The record is -6.7 C (19.9 F) in 1972, marked on the chart; the median year is -1.1 C (30.0 F).
Coldest night (TNn) at Ft Ross by year
Year
Coldest night (TNn)
1895
n/a
1896
n/a
1897
0.0 C (32.0 F)
1898
0.0 C (32.0 F)
1899
-1.7 C (28.9 F)
1900
1.7 C (35.1 F)
1901
1.1 C (34.0 F)
1902
0.6 C (33.1 F)
1903
-2.8 C (27.0 F)
1904
-1.7 C (28.9 F)
1905
0.0 C (32.0 F)
1906
0.0 C (32.0 F)
1907
-0.6 C (30.9 F)
1908
1.1 C (34.0 F)
1909
n/a
1910
n/a
1911
n/a
1912
n/a
1913
n/a
1914
n/a
1915
n/a
1916
n/a
1917
n/a
1918
n/a
1919
n/a
1920
n/a
1921
n/a
1922
n/a
1923
n/a
1924
n/a
1925
n/a
1926
n/a
1927
n/a
1928
n/a
1929
n/a
1930
n/a
1931
n/a
1932
n/a
1933
n/a
1934
n/a
1935
n/a
1936
n/a
1937
n/a
1938
n/a
1939
n/a
1940
n/a
1941
n/a
1942
n/a
1943
n/a
1944
n/a
1945
n/a
1946
n/a
1947
n/a
1948
n/a
1949
n/a
1950
1.7 C (35.1 F)
1951
-0.6 C (30.9 F)
1952
0.6 C (33.1 F)
1953
0.0 C (32.0 F)
1954
-0.6 C (30.9 F)
1955
0.6 C (33.1 F)
1956
-1.1 C (30.0 F)
1957
-1.1 C (30.0 F)
1958
-1.1 C (30.0 F)
1959
-1.1 C (30.0 F)
1960
-0.6 C (30.9 F)
1961
2.2 C (36.0 F)
1962
-2.2 C (28.0 F)
1963
-1.1 C (30.0 F)
1964
0.6 C (33.1 F)
1965
0.6 C (33.1 F)
1966
-0.6 C (30.9 F)
1967
-1.7 C (28.9 F)
1968
-2.2 C (28.0 F)
1969
0.0 C (32.0 F)
1970
-1.7 C (28.9 F)
1971
-1.1 C (30.0 F)
1972
-6.7 C (19.9 F)
1973
-1.1 C (30.0 F)
1974
-1.1 C (30.0 F)
1975
-1.1 C (30.0 F)
1976
-2.2 C (28.0 F)
1977
-3.3 C (26.1 F)
1978
-1.1 C (30.0 F)
1979
-0.6 C (30.9 F)
1980
-1.7 C (28.9 F)
1981
1.7 C (35.1 F)
1982
-2.2 C (28.0 F)
1983
1.1 C (34.0 F)
1984
0.0 C (32.0 F)
1985
-3.3 C (26.1 F)
1986
-1.7 C (28.9 F)
1987
-6.7 C (19.9 F)
1988
-5.0 C (23.0 F)
1989
-3.9 C (25.0 F)
1990
-6.1 C (21.0 F)
1991
-2.2 C (28.0 F)
1992
-2.2 C (28.0 F)
1993
-1.7 C (28.9 F)
1994
-3.3 C (26.1 F)
1995
1.1 C (34.0 F)
1996
0.6 C (33.1 F)
1997
0.0 C (32.0 F)
1998
-2.8 C (27.0 F)
1999
-1.1 C (30.0 F)
2000
-2.8 C (27.0 F)
2001
0.6 C (33.1 F)
2002
-1.1 C (30.0 F)
2003
-3.9 C (25.0 F)
2004
0.6 C (33.1 F)
2005
-3.3 C (26.1 F)
2006
-2.2 C (28.0 F)
2007
-1.1 C (30.0 F)
2008
0.0 C (32.0 F)
2009
0.0 C (32.0 F)
2010
0.0 C (32.0 F)
2011
-2.2 C (28.0 F)
2012
-2.8 C (27.0 F)
2013
-2.2 C (28.0 F)
2014
-1.1 C (30.0 F)
2015
0.0 C (32.0 F)
2016
-0.6 C (30.9 F)
2017
-0.6 C (30.9 F)
2018
-2.2 C (28.0 F)
2019
-6.1 C (21.0 F)
2020
-6.7 C (19.9 F)
2021
-0.6 C (30.9 F)
2022
0.0 C (32.0 F)
2023
0.0 C (32.0 F)
2024
-1.1 C (30.0 F)
2025
1.1 C (34.0 F)
2026
1.7 C (35.1 F)
Wettest day (Rx1day)
The wettest day of the year at Ft Ross, 1895 to 2026. The record is 223.8 mm (8.8 in) in 1920, marked on the chart; the median year is 80.2 mm (3.2 in).
Wettest day (Rx1day) at Ft Ross by year
Year
Wettest day (Rx1day)
1895
0.0 mm (0.00 in)
1896
0.0 mm (0.00 in)
1897
107.4 mm (4.2 in)
1898
92.7 mm (3.6 in)
1899
109.2 mm (4.3 in)
1900
90.7 mm (3.6 in)
1901
93.2 mm (3.7 in)
1902
128.3 mm (5.1 in)
1903
109.5 mm (4.3 in)
1904
164.8 mm (6.5 in)
1905
109.2 mm (4.3 in)
1906
139.4 mm (5.5 in)
1907
152.1 mm (6.0 in)
1908
68.6 mm (2.7 in)
1909
112.0 mm (4.4 in)
1910
64.8 mm (2.6 in)
1911
163.3 mm (6.4 in)
1912
132.1 mm (5.2 in)
1913
119.4 mm (4.7 in)
1914
194.8 mm (7.7 in)
1915
128.5 mm (5.1 in)
1916
117.1 mm (4.6 in)
1917
90.2 mm (3.6 in)
1918
65.8 mm (2.6 in)
1919
117.1 mm (4.6 in)
1920
223.8 mm (8.8 in)
1921
67.8 mm (2.7 in)
1922
68.6 mm (2.7 in)
1923
102.6 mm (4.0 in)
1924
100.1 mm (3.9 in)
1925
58.2 mm (2.3 in)
1926
93.2 mm (3.7 in)
1927
72.1 mm (2.8 in)
1928
57.2 mm (2.3 in)
1929
97.0 mm (3.8 in)
1930
80.8 mm (3.2 in)
1931
64.0 mm (2.5 in)
1932
43.9 mm (1.7 in)
1933
46.5 mm (1.8 in)
1934
58.9 mm (2.3 in)
1935
65.8 mm (2.6 in)
1936
47.8 mm (1.9 in)
1937
81.8 mm (3.2 in)
1938
136.7 mm (5.4 in)
1939
37.8 mm (1.5 in)
1940
98.3 mm (3.9 in)
1941
57.4 mm (2.3 in)
1942
70.6 mm (2.8 in)
1943
78.2 mm (3.1 in)
1944
56.1 mm (2.2 in)
1945
159.8 mm (6.3 in)
1946
59.2 mm (2.3 in)
1947
69.6 mm (2.7 in)
1948
62.0 mm (2.4 in)
1949
41.4 mm (1.6 in)
1950
115.8 mm (4.6 in)
1951
86.4 mm (3.4 in)
1952
117.9 mm (4.6 in)
1953
107.4 mm (4.2 in)
1954
91.7 mm (3.6 in)
1955
85.9 mm (3.4 in)
1956
144.8 mm (5.7 in)
1957
104.6 mm (4.1 in)
1958
81.8 mm (3.2 in)
1959
86.4 mm (3.4 in)
1960
79.0 mm (3.1 in)
1961
58.4 mm (2.3 in)
1962
80.5 mm (3.2 in)
1963
68.8 mm (2.7 in)
1964
65.0 mm (2.6 in)
1965
59.4 mm (2.3 in)
1966
72.9 mm (2.9 in)
1967
92.7 mm (3.6 in)
1968
60.5 mm (2.4 in)
1969
73.7 mm (2.9 in)
1970
98.6 mm (3.9 in)
1971
100.1 mm (3.9 in)
1972
53.3 mm (2.1 in)
1973
93.5 mm (3.7 in)
1974
79.5 mm (3.1 in)
1975
96.5 mm (3.8 in)
1976
29.5 mm (1.2 in)
1977
88.9 mm (3.5 in)
1978
79.8 mm (3.1 in)
1979
86.4 mm (3.4 in)
1980
91.9 mm (3.6 in)
1981
116.8 mm (4.6 in)
1982
116.6 mm (4.6 in)
1983
69.3 mm (2.7 in)
1984
55.9 mm (2.2 in)
1985
45.2 mm (1.8 in)
1986
74.2 mm (2.9 in)
1987
55.6 mm (2.2 in)
1988
57.9 mm (2.3 in)
1989
74.9 mm (2.9 in)
1990
63.5 mm (2.5 in)
1991
64.8 mm (2.6 in)
1992
37.1 mm (1.5 in)
1993
43.2 mm (1.7 in)
1994
69.9 mm (2.8 in)
1995
73.2 mm (2.9 in)
1996
111.8 mm (4.4 in)
1997
63.2 mm (2.5 in)
1998
81.3 mm (3.2 in)
1999
62.5 mm (2.5 in)
2000
54.4 mm (2.1 in)
2001
66.0 mm (2.6 in)
2002
134.6 mm (5.3 in)
2003
82.8 mm (3.3 in)
2004
73.7 mm (2.9 in)
2005
65.8 mm (2.6 in)
2006
61.5 mm (2.4 in)
2007
61.0 mm (2.4 in)
2008
53.3 mm (2.1 in)
2009
50.3 mm (2.0 in)
2010
50.8 mm (2.0 in)
2011
55.9 mm (2.2 in)
2012
62.7 mm (2.5 in)
2013
64.3 mm (2.5 in)
2014
78.7 mm (3.1 in)
2015
85.6 mm (3.4 in)
2016
101.6 mm (4.0 in)
2017
103.1 mm (4.1 in)
2018
96.5 mm (3.8 in)
2019
198.1 mm (7.8 in)
2020
34.8 mm (1.4 in)
2021
88.1 mm (3.5 in)
2022
88.9 mm (3.5 in)
2023
132.1 mm (5.2 in)
2024
81.3 mm (3.2 in)
2025
101.6 mm (4.0 in)
2026
101.6 mm (4.0 in)
Wettest five days (Rx5day)
The wettest five days of the year at Ft Ross, 1895 to 2026. The record is 407.9 mm (16.1 in) in 1920, marked on the chart; the median year is 145.2 mm (5.7 in).
Wettest five days (Rx5day) at Ft Ross by year
Year
Wettest five days (Rx5day)
1895
0.0 mm (0.00 in)
1896
0.0 mm (0.00 in)
1897
164.9 mm (6.5 in)
1898
176.3 mm (6.9 in)
1899
259.0 mm (10.2 in)
1900
245.1 mm (9.6 in)
1901
142.2 mm (5.6 in)
1902
300.3 mm (11.8 in)
1903
167.2 mm (6.6 in)
1904
263.6 mm (10.4 in)
1905
184.7 mm (7.3 in)
1906
252.2 mm (9.9 in)
1907
265.3 mm (10.4 in)
1908
111.5 mm (4.4 in)
1909
253.5 mm (10.0 in)
1910
131.9 mm (5.2 in)
1911
196.6 mm (7.7 in)
1912
265.8 mm (10.5 in)
1913
216.2 mm (8.5 in)
1914
297.4 mm (11.7 in)
1915
246.6 mm (9.7 in)
1916
215.7 mm (8.5 in)
1917
200.7 mm (7.9 in)
1918
144.3 mm (5.7 in)
1919
221.6 mm (8.7 in)
1920
407.9 mm (16.1 in)
1921
171.2 mm (6.7 in)
1922
135.9 mm (5.4 in)
1923
132.8 mm (5.2 in)
1924
160.5 mm (6.3 in)
1925
167.4 mm (6.6 in)
1926
201.2 mm (7.9 in)
1927
119.9 mm (4.7 in)
1928
125.0 mm (4.9 in)
1929
211.3 mm (8.3 in)
1930
124.2 mm (4.9 in)
1931
118.3 mm (4.7 in)
1932
87.0 mm (3.4 in)
1933
88.7 mm (3.5 in)
1934
146.8 mm (5.8 in)
1935
106.7 mm (4.2 in)
1936
124.8 mm (4.9 in)
1937
176.8 mm (7.0 in)
1938
232.8 mm (9.2 in)
1939
71.1 mm (2.8 in)
1940
223.3 mm (8.8 in)
1941
143.7 mm (5.7 in)
1942
183.9 mm (7.2 in)
1943
181.5 mm (7.1 in)
1944
158.0 mm (6.2 in)
1945
251.5 mm (9.9 in)
1946
91.2 mm (3.6 in)
1947
102.7 mm (4.0 in)
1948
114.5 mm (4.5 in)
1949
114.1 mm (4.5 in)
1950
154.7 mm (6.1 in)
1951
213.6 mm (8.4 in)
1952
153.6 mm (6.0 in)
1953
166.6 mm (6.6 in)
1954
128.7 mm (5.1 in)
1955
214.9 mm (8.5 in)
1956
221.0 mm (8.7 in)
1957
212.6 mm (8.4 in)
1958
147.0 mm (5.8 in)
1959
168.0 mm (6.6 in)
1960
168.9 mm (6.6 in)
1961
128.0 mm (5.0 in)
1962
175.3 mm (6.9 in)
1963
124.7 mm (4.9 in)
1964
118.1 mm (4.6 in)
1965
160.7 mm (6.3 in)
1966
141.7 mm (5.6 in)
1967
159.2 mm (6.3 in)
1968
143.2 mm (5.6 in)
1969
169.0 mm (6.7 in)
1970
224.1 mm (8.8 in)
1971
141.5 mm (5.6 in)
1972
115.1 mm (4.5 in)
1973
218.5 mm (8.6 in)
1974
195.5 mm (7.7 in)
1975
156.9 mm (6.2 in)
1976
83.3 mm (3.3 in)
1977
140.0 mm (5.5 in)
1978
120.4 mm (4.7 in)
1979
132.9 mm (5.2 in)
1980
143.8 mm (5.7 in)
1981
229.3 mm (9.0 in)
1982
184.0 mm (7.2 in)
1983
181.1 mm (7.1 in)
1984
124.2 mm (4.9 in)
1985
115.0 mm (4.5 in)
1986
145.2 mm (5.7 in)
1987
125.0 mm (4.9 in)
1988
90.1 mm (3.5 in)
1989
132.5 mm (5.2 in)
1990
104.4 mm (4.1 in)
1991
71.2 mm (2.8 in)
1992
105.2 mm (4.1 in)
1993
87.9 mm (3.5 in)
1994
110.0 mm (4.3 in)
1995
140.3 mm (5.5 in)
1996
135.2 mm (5.3 in)
1997
156.2 mm (6.1 in)
1998
157.5 mm (6.2 in)
1999
63.3 mm (2.5 in)
2000
88.1 mm (3.5 in)
2001
101.4 mm (4.0 in)
2002
166.9 mm (6.6 in)
2003
105.7 mm (4.2 in)
2004
48.0 mm (1.9 in)
2005
109.3 mm (4.3 in)
2006
115.0 mm (4.5 in)
2007
136.6 mm (5.4 in)
2008
95.5 mm (3.8 in)
2009
95.5 mm (3.8 in)
2010
160.3 mm (6.3 in)
2011
n/a
2012
183.8 mm (7.2 in)
2013
64.3 mm (2.5 in)
2014
193.0 mm (7.6 in)
2015
138.2 mm (5.4 in)
2016
135.9 mm (5.4 in)
2017
197.4 mm (7.8 in)
2018
190.5 mm (7.5 in)
2019
216.6 mm (8.5 in)
2020
60.5 mm (2.4 in)
2021
135.4 mm (5.3 in)
2022
157.5 mm (6.2 in)
2023
242.6 mm (9.6 in)
2024
134.1 mm (5.3 in)
2025
139.7 mm (5.5 in)
2026
131.3 mm (5.2 in)
Longest dry spell (CDD)
The longest dry spell of the year at Ft Ross, 1895 to 2026. The record is 149 days in 2008, marked on the chart; the median year is 74 days.
Longest dry spell (CDD) at Ft Ross by year
Year
Longest dry spell (CDD)
1895
31 days
1896
30 days
1897
72 days
1898
37 days
1899
93 days
1900
44 days
1901
123 days
1902
127 days
1903
108 days
1904
68 days
1905
103 days
1906
97 days
1907
82 days
1908
72 days
1909
85 days
1910
105 days
1911
129 days
1912
69 days
1913
129 days
1914
74 days
1915
108 days
1916
69 days
1917
41 days
1918
58 days
1919
111 days
1920
53 days
1921
110 days
1922
72 days
1923
89 days
1924
46 days
1925
57 days
1926
54 days
1927
61 days
1928
69 days
1929
76 days
1930
102 days
1931
93 days
1932
59 days
1933
35 days
1934
107 days
1935
119 days
1936
55 days
1937
50 days
1938
117 days
1939
45 days
1940
65 days
1941
51 days
1942
102 days
1943
128 days
1944
46 days
1945
127 days
1946
59 days
1947
90 days
1948
47 days
1949
67 days
1950
78 days
1951
99 days
1952
55 days
1953
82 days
1954
59 days
1955
93 days
1956
60 days
1957
73 days
1958
80 days
1959
118 days
1960
132 days
1961
80 days
1962
89 days
1963
134 days
1964
140 days
1965
94 days
1966
65 days
1967
105 days
1968
74 days
1969
59 days
1970
130 days
1971
60 days
1972
67 days
1973
49 days
1974
72 days
1975
72 days
1976
88 days
1977
74 days
1978
63 days
1979
61 days
1980
104 days
1981
128 days
1982
74 days
1983
47 days
1984
46 days
1985
74 days
1986
90 days
1987
54 days
1988
95 days
1989
51 days
1990
28 days
1991
71 days
1992
91 days
1993
128 days
1994
73 days
1995
126 days
1996
115 days
1997
76 days
1998
118 days
1999
80 days
2000
35 days
2001
88 days
2002
76 days
2003
97 days
2004
133 days
2005
117 days
2006
140 days
2007
74 days
2008
149 days
2009
57 days
2010
66 days
2011
4 days
2012
12 days
2013
51 days
2014
22 days
2015
21 days
2016
43 days
2017
90 days
2018
119 days
2019
104 days
2020
53 days
2021
46 days
2022
45 days
2023
77 days
2024
57 days
2025
144 days
2026
83 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.
Rainfall Return Levels
107 years, 1897 to 2025
A day with at least 83.9 mm (3.3 in) of rain is expected about once in 2 years. A day with at least 204.1 mm (8.0 in) of rain is expected about once in 100 years.
Rainfall return levels at Ft Ross: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
83.9 mm (3.3 in)
5 years
115.2 mm (4.5 in)
10 years
136.3 mm (5.4 in)
25 years
163.3 mm (6.4 in)
50 years
183.7 mm (7.2 in)
100 years
204.1 mm (8.0 in)
The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 107 years of values from 1897 to 2025.
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: 223.8 mm (8.8 in) in 1920; 198.1 mm (7.8 in) in 2019; 194.8 mm (7.7 in) in 1914.
Station Changes
1 suspected
One change was suspected in the annual mean temperature of Ft Ross, at 1967. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1967 ran 0.5 C (0.9 F) lower than in the years before (likely change).
Suspected changes in the annual mean temperature at Ft Ross, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1967
-0.5
-0.9
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 Ft Ross standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Ft Ross 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.