Record envelope, standing records and threshold days for Calaveras Big Trees (USC00041277), California, United States, with 98 years of record.
Key Facts for Calaveras Big Trees
Calaveras Big Trees (USC00041277) is a weather station in California, United States at 38.28 latitude and -120.31 longitude, 1,431 m (4,695 ft) above sea level.
The station reports from 1929 to 2026, 98 years of record.
1,464 records set at Calaveras Big Trees still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Calaveras Big Trees set a daily record high minimum temperature of 18.3 C (64.9 F) on 10 August 2026.
About the Station
Location: California, United States, 38.28 latitude, -120.31 longitude.
Elevation: 1,431 m (4,695 ft).
Period of record: 1929 to 2026, 98 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 Calaveras Big Trees. 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 Calaveras Big Trees, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
22.8 C (73.0 F)
-17.2 C (1.0 F)
18.9 C (66.0 F)
-4.4 C (24.1 F)
Feb
27.8 C (82.0 F)
-16.1 C (3.0 F)
17.2 C (63.0 F)
-1.7 C (28.9 F)
Mar
27.8 C (82.0 F)
-13.3 C (8.1 F)
25.6 C (78.1 F)
-2.2 C (28.0 F)
Apr
31.1 C (88.0 F)
-9.4 C (15.1 F)
20.6 C (69.1 F)
-1.7 C (28.9 F)
May
33.9 C (93.0 F)
-6.1 C (21.0 F)
25.6 C (78.1 F)
0.0 C (32.0 F)
Jun
37.8 C (100.0 F)
-6.1 C (21.0 F)
27.8 C (82.0 F)
7.8 C (46.0 F)
Jul
41.7 C (107.1 F)
-0.6 C (30.9 F)
31.7 C (89.1 F)
13.3 C (55.9 F)
Aug
41.1 C (106.0 F)
0.0 C (32.0 F)
31.7 C (89.1 F)
10.6 C (51.1 F)
Sep
41.1 C (106.0 F)
-2.2 C (28.0 F)
n/a
n/a
Oct
34.4 C (93.9 F)
-6.7 C (19.9 F)
n/a
n/a
Nov
31.7 C (89.1 F)
-12.8 C (9.0 F)
n/a
n/a
Dec
25.6 C (78.1 F)
-17.8 C (0.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Calaveras Big Trees still stand. 1932 holds the most, with 87.
Standing records at Calaveras Big Trees by the year they were set
Year set
Standing records
1929
19
1930
76
1931
73
1932
87
1933
51
1934
19
1935
23
1936
6
1937
14
1938
9
1939
9
1940
7
1941
6
1942
14
1943
18
1944
4
1945
7
1946
3
1947
13
1948
11
1949
19
1950
27
1951
8
1952
9
1953
10
1954
15
1955
14
1956
13
1957
12
1958
20
1959
11
1960
12
1961
10
1962
14
1963
10
1964
21
1965
19
1966
19
1967
24
1968
17
1969
9
1970
13
1971
19
1972
24
1973
11
1974
9
1975
17
1976
16
1977
14
1978
9
1979
4
1980
5
1981
8
1982
7
1983
6
1984
4
1985
18
1986
18
1987
20
1988
13
1989
15
1990
13
1991
8
1992
5
1993
6
1994
7
1995
8
1996
18
1997
7
1998
10
1999
16
2000
19
2001
9
2002
7
2003
22
2004
10
2005
3
2006
11
2007
8
2008
15
2009
6
2010
14
2011
12
2012
6
2014
9
2015
26
2016
7
2017
21
2018
10
2019
12
2020
36
2021
11
2022
18
2023
7
2024
6
2025
5
2026
24
All-Time Record Progression
7 new records
7 all-time records were set at Calaveras Big Trees between 1 June 1960 and 28 January 2021. Each dot is a new record.
When Calaveras Big Trees set new all-time records
Date
Kind
Detail
1960-06-01
Record high minimum temperature
Record high minimum temperature 21.1 C (70.0 F)
1963-02-01
Record daily precipitation
Record daily precipitation 205.7 mm (8.1 in)
1990-12-21
Record low maximum temperature
Record low maximum temperature -7.2 C (19.0 F)
1990-12-22
Record low maximum temperature
Record low maximum temperature -7.8 C (18.0 F)
2008-07-10
Record high minimum temperature
Record high minimum temperature 21.7 C (71.1 F)
2021-01-27
Record daily snowfall
Record daily snowfall 84.3 cm (33.2 in)
2021-01-28
Record daily snowfall
Record daily snowfall 88.9 cm (35.0 in)
Wettest Day of Each Month
Feb: 205.7 mm (8.1 in)
The wettest day on record for each calendar month at Calaveras Big Trees. The most was 205.7 mm (8.1 in) on 1 February 1963.
Record daily precipitation for each month at Calaveras Big Trees
Month
Record daily precipitation (mm)
Date
Jan
199.4 mm (7.9 in)
31 January 1963
Feb
205.7 mm (8.1 in)
1 February 1963
Mar
138.4 mm (5.4 in)
22 March 2018
Apr
114.8 mm (4.5 in)
11 April 1982
May
116.1 mm (4.6 in)
19 May 1957
Jun
53.6 mm (2.1 in)
7 June 1936
Jul
55.1 mm (2.2 in)
10 July 1974
Aug
56.1 mm (2.2 in)
15 August 1976
Sep
113.5 mm (4.5 in)
19 September 1959
Oct
156.0 mm (6.1 in)
24 October 2021
Nov
170.2 mm (6.7 in)
18 November 1950
Dec
202.2 mm (8.0 in)
11 December 1937
Period of Record Coverage
1929 to 2026
Complete yearUnder 90 percent of days
97 years of record at Calaveras Big Trees, 1929 to 2026. 19 years have data for under 90 percent of days and are left out of rankings: 1929, 1935, 2008, 2009, 2010, 2011, 2012, 2014 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 77 complete years at Calaveras Big Trees, 1930 to 2018. Blue stripes are years cooler than the station's own mean of 10.1 C (50.3 F); red stripes are warmer. The coolest year was 1998, at 8.1 C (46.5 F), and the warmest was 1931, at 13.0 C (55.3 F). The strongest colour marks a difference of 2.9 C (5.2 F).
Annual mean temperature at Calaveras Big Trees as warming stripes, 1930 to 2018
Year
Annual mean temperature
Difference from the station mean
1930
11.9 C
+1.75 C
1931
13.0 C
+2.82 C
1932
12.4 C
+2.22 C
1933
12.2 C
+2.05 C
1934
12.0 C
+1.85 C
1936
11.1 C
+0.96 C
1937
10.1 C
-0.04 C
1938
10.0 C
-0.11 C
1939
11.2 C
+1.06 C
1940
11.4 C
+1.24 C
1941
10.1 C
-0.05 C
1942
10.5 C
+0.35 C
1943
11.0 C
+0.82 C
1944
10.0 C
-0.19 C
1945
10.3 C
+0.11 C
1946
10.2 C
+0.09 C
1947
10.6 C
+0.49 C
1949
9.7 C
-0.50 C
1950
10.9 C
+0.73 C
1951
10.2 C
+0.04 C
1952
9.9 C
-0.21 C
1953
10.0 C
-0.19 C
1954
10.4 C
+0.25 C
1955
9.3 C
-0.88 C
1956
9.6 C
-0.53 C
1957
9.6 C
-0.59 C
1958
10.8 C
+0.61 C
1959
11.3 C
+1.11 C
1960
10.7 C
+0.51 C
1961
10.7 C
+0.53 C
1962
10.3 C
+0.13 C
1964
9.4 C
-0.74 C
1965
9.2 C
-0.93 C
1966
9.7 C
-0.42 C
1967
9.6 C
-0.56 C
1968
9.6 C
-0.60 C
1969
9.3 C
-0.88 C
1970
9.7 C
-0.49 C
1971
8.5 C
-1.70 C
1972
9.5 C
-0.69 C
1974
9.7 C
-0.41 C
1975
9.2 C
-0.96 C
1977
10.6 C
+0.45 C
1978
9.8 C
-0.39 C
1979
9.5 C
-0.66 C
1980
9.8 C
-0.39 C
1981
10.6 C
+0.41 C
1982
8.6 C
-1.56 C
1983
9.2 C
-0.91 C
1984
9.9 C
-0.21 C
1985
9.5 C
-0.63 C
1986
10.4 C
+0.23 C
1987
9.9 C
-0.22 C
1988
10.5 C
+0.32 C
1989
9.6 C
-0.51 C
1990
9.6 C
-0.59 C
1991
9.9 C
-0.23 C
1992
10.4 C
+0.28 C
1993
9.1 C
-1.08 C
1994
9.4 C
-0.72 C
1995
9.7 C
-0.50 C
1996
10.1 C
-0.09 C
1997
10.0 C
-0.16 C
1998
8.1 C
-2.10 C
1999
9.5 C
-0.63 C
2000
9.6 C
-0.52 C
2001
10.2 C
+0.05 C
2002
9.9 C
-0.21 C
2004
10.1 C
-0.08 C
2005
9.6 C
-0.55 C
2006
9.5 C
-0.64 C
2007
10.1 C
-0.01 C
2008
10.4 C
+0.20 C
2015
11.7 C
+1.55 C
2016
10.6 C
+0.42 C
2017
11.0 C
+0.80 C
2018
10.8 C
+0.66 C
The annual mean temperature here has fallen by 0.1 C (0.1 to 0.2) per decade over 1930 to 2018. In Fahrenheit: 0.2 F (0.1 to 0.4) per decade. The slope is a straight line fitted to 77 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Calaveras Big Trees
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.1 C (-0.2 to -0.1) per decade
-0.2 F (-0.4 to -0.1) per decade
1930 to 2018
77
Fall
Mean daily maximum
-0.4 C (-0.5 to -0.3) per decade
-0.8 F (-1.0 to -0.6) per decade
1930 to 2018
77
Fall
Mean daily minimum
0.1 C (0.1 to 0.2) per decade
0.3 F (0.1 to 0.4) per decade
1930 to 2018
77
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
1929 to 2026
Yearly extremes at Calaveras Big Trees: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
41.7 C (107.1 F)
1933
33.3 C (91.9 F)
97
Coldest night (TNn)
-17.8 C (0.0 F)
1932
-10.6 C (12.9 F)
97
Wettest day (Rx1day)
205.7 mm (8.1 in)
1963
101.1 mm (4.0 in)
98
Wettest five days (Rx5day)
661.0 mm (26.0 in)
1986
219.5 mm (8.6 in)
97
Longest dry spell (CDD)
168 days
2002
84 days
98
Hottest day (TXx)
The hottest day of the year at Calaveras Big Trees, 1929 to 2026. The record is 41.7 C (107.1 F) in 1933, marked on the chart; the median year is 33.3 C (91.9 F).
Hottest day (TXx) at Calaveras Big Trees by year
Year
Hottest day (TXx)
1929
27.8 C (82.0 F)
1930
38.9 C (102.0 F)
1931
41.1 C (106.0 F)
1932
41.1 C (106.0 F)
1933
41.7 C (107.1 F)
1934
36.7 C (98.1 F)
1935
34.4 C (93.9 F)
1936
33.3 C (91.9 F)
1937
36.1 C (97.0 F)
1938
35.6 C (96.1 F)
1939
35.6 C (96.1 F)
1940
36.1 C (97.0 F)
1941
35.6 C (96.1 F)
1942
37.8 C (100.0 F)
1943
36.7 C (98.1 F)
1944
34.4 C (93.9 F)
1945
36.1 C (97.0 F)
1946
35.6 C (96.1 F)
1947
33.3 C (91.9 F)
1948
32.2 C (90.0 F)
1949
33.3 C (91.9 F)
1950
34.4 C (93.9 F)
1951
33.3 C (91.9 F)
1952
33.3 C (91.9 F)
1953
32.2 C (90.0 F)
1954
32.2 C (90.0 F)
1955
35.6 C (96.1 F)
1956
32.2 C (90.0 F)
1957
33.3 C (91.9 F)
1958
32.2 C (90.0 F)
1959
36.7 C (98.1 F)
1960
36.7 C (98.1 F)
1961
37.2 C (99.0 F)
1962
33.3 C (91.9 F)
1963
31.7 C (89.1 F)
1964
34.4 C (93.9 F)
1965
31.1 C (88.0 F)
1966
33.3 C (91.9 F)
1967
34.4 C (93.9 F)
1968
34.4 C (93.9 F)
1969
33.9 C (93.0 F)
1970
34.4 C (93.9 F)
1971
35.6 C (96.1 F)
1972
37.8 C (100.0 F)
1973
33.3 C (91.9 F)
1974
32.2 C (90.0 F)
1975
35.6 C (96.1 F)
1976
34.4 C (93.9 F)
1977
36.1 C (97.0 F)
1978
36.1 C (97.0 F)
1979
35.0 C (95.0 F)
1980
35.0 C (95.0 F)
1981
36.7 C (98.1 F)
1982
33.3 C (91.9 F)
1983
33.3 C (91.9 F)
1984
33.9 C (93.0 F)
1985
32.8 C (91.0 F)
1986
30.6 C (87.1 F)
1987
34.4 C (93.9 F)
1988
35.0 C (95.0 F)
1989
33.9 C (93.0 F)
1990
32.8 C (91.0 F)
1991
33.3 C (91.9 F)
1992
32.8 C (91.0 F)
1993
31.1 C (88.0 F)
1994
31.7 C (89.1 F)
1995
31.7 C (89.1 F)
1996
33.3 C (91.9 F)
1997
33.9 C (93.0 F)
1998
33.3 C (91.9 F)
1999
30.6 C (87.1 F)
2000
31.7 C (89.1 F)
2001
32.2 C (90.0 F)
2002
33.9 C (93.0 F)
2003
31.7 C (89.1 F)
2004
32.8 C (91.0 F)
2005
32.2 C (90.0 F)
2006
33.3 C (91.9 F)
2007
33.9 C (93.0 F)
2008
34.4 C (93.9 F)
2009
32.2 C (90.0 F)
2010
32.8 C (91.0 F)
2011
28.9 C (84.0 F)
2012
36.1 C (97.0 F)
2013
n/a
2014
32.2 C (90.0 F)
2015
32.8 C (91.0 F)
2016
32.2 C (90.0 F)
2017
32.8 C (91.0 F)
2018
31.7 C (89.1 F)
2019
30.0 C (86.0 F)
2020
34.4 C (93.9 F)
2021
35.6 C (96.1 F)
2022
32.8 C (91.0 F)
2023
34.4 C (93.9 F)
2024
35.6 C (96.1 F)
2025
31.1 C (88.0 F)
2026
31.7 C (89.1 F)
Coldest night (TNn)
The coldest night of the year at Calaveras Big Trees, 1929 to 2026. The record is -17.8 C (0.0 F) in 1932, marked on the chart; the median year is -10.6 C (12.9 F).
Coldest night (TNn) at Calaveras Big Trees by year
Year
Coldest night (TNn)
1929
-3.3 C (26.1 F)
1930
-16.7 C (1.9 F)
1931
-12.8 C (9.0 F)
1932
-17.8 C (0.0 F)
1933
-12.2 C (10.0 F)
1934
-7.8 C (18.0 F)
1935
-12.2 C (10.0 F)
1936
-10.0 C (14.0 F)
1937
-17.2 C (1.0 F)
1938
-10.0 C (14.0 F)
1939
-11.1 C (12.0 F)
1940
-9.4 C (15.1 F)
1941
-8.3 C (17.1 F)
1942
-8.9 C (16.0 F)
1943
-8.9 C (16.0 F)
1944
-7.8 C (18.0 F)
1945
-7.8 C (18.0 F)
1946
-8.9 C (16.0 F)
1947
-8.3 C (17.1 F)
1948
-11.1 C (12.0 F)
1949
-15.0 C (5.0 F)
1950
-15.6 C (3.9 F)
1951
-13.3 C (8.1 F)
1952
-12.2 C (10.0 F)
1953
-11.7 C (10.9 F)
1954
-8.3 C (17.1 F)
1955
-11.7 C (10.9 F)
1956
-12.2 C (10.0 F)
1957
-13.3 C (8.1 F)
1958
-11.1 C (12.0 F)
1959
-10.0 C (14.0 F)
1960
-11.7 C (10.9 F)
1961
-10.0 C (14.0 F)
1962
-16.1 C (3.0 F)
1963
-9.4 C (15.1 F)
1964
-10.0 C (14.0 F)
1965
-13.9 C (7.0 F)
1966
-11.7 C (10.9 F)
1967
-12.2 C (10.0 F)
1968
-14.4 C (6.1 F)
1969
-13.3 C (8.1 F)
1970
-11.1 C (12.0 F)
1971
-12.8 C (9.0 F)
1972
-17.8 C (0.0 F)
1973
-11.7 C (10.9 F)
1974
-12.2 C (10.0 F)
1975
-10.0 C (14.0 F)
1976
-10.6 C (12.9 F)
1977
-9.4 C (15.1 F)
1978
-11.1 C (12.0 F)
1979
-13.9 C (7.0 F)
1980
-7.2 C (19.0 F)
1981
-8.9 C (16.0 F)
1982
-11.7 C (10.9 F)
1983
-7.8 C (18.0 F)
1984
-10.6 C (12.9 F)
1985
-13.3 C (8.1 F)
1986
-6.1 C (21.0 F)
1987
-10.6 C (12.9 F)
1988
-11.7 C (10.9 F)
1989
-15.0 C (5.0 F)
1990
-16.1 C (3.0 F)
1991
-7.2 C (19.0 F)
1992
-10.0 C (14.0 F)
1993
-13.9 C (7.0 F)
1994
-9.4 C (15.1 F)
1995
-7.2 C (19.0 F)
1996
-10.0 C (14.0 F)
1997
-15.0 C (5.0 F)
1998
-12.8 C (9.0 F)
1999
-9.4 C (15.1 F)
2000
-8.3 C (17.1 F)
2001
-7.8 C (18.0 F)
2002
-11.1 C (12.0 F)
2003
-9.4 C (15.1 F)
2004
-11.1 C (12.0 F)
2005
-6.1 C (21.0 F)
2006
-10.0 C (14.0 F)
2007
-11.1 C (12.0 F)
2008
-9.4 C (15.1 F)
2009
-12.2 C (10.0 F)
2010
-10.6 C (12.9 F)
2011
-10.0 C (14.0 F)
2012
-10.0 C (14.0 F)
2013
n/a
2014
-6.1 C (21.0 F)
2015
-9.4 C (15.1 F)
2016
-9.4 C (15.1 F)
2017
-7.8 C (18.0 F)
2018
-11.1 C (12.0 F)
2019
-10.6 C (12.9 F)
2020
-6.1 C (21.0 F)
2021
-7.8 C (18.0 F)
2022
-10.0 C (14.0 F)
2023
-9.4 C (15.1 F)
2024
-9.4 C (15.1 F)
2025
-5.6 C (21.9 F)
2026
-4.4 C (24.1 F)
Wettest day (Rx1day)
The wettest day of the year at Calaveras Big Trees, 1929 to 2026. The record is 205.7 mm (8.1 in) in 1963, marked on the chart; the median year is 101.1 mm (4.0 in).
Wettest day (Rx1day) at Calaveras Big Trees by year
Year
Wettest day (Rx1day)
1929
72.1 mm (2.8 in)
1930
99.3 mm (3.9 in)
1931
108.0 mm (4.3 in)
1932
76.2 mm (3.0 in)
1933
124.0 mm (4.9 in)
1934
66.0 mm (2.6 in)
1935
74.4 mm (2.9 in)
1936
141.0 mm (5.6 in)
1937
202.2 mm (8.0 in)
1938
98.8 mm (3.9 in)
1939
57.9 mm (2.3 in)
1940
77.5 mm (3.1 in)
1941
75.7 mm (3.0 in)
1942
86.4 mm (3.4 in)
1943
127.0 mm (5.0 in)
1944
103.6 mm (4.1 in)
1945
133.4 mm (5.3 in)
1946
156.5 mm (6.2 in)
1947
73.9 mm (2.9 in)
1948
81.0 mm (3.2 in)
1949
84.1 mm (3.3 in)
1950
170.2 mm (6.7 in)
1951
108.7 mm (4.3 in)
1952
117.6 mm (4.6 in)
1953
79.5 mm (3.1 in)
1954
85.1 mm (3.4 in)
1955
160.5 mm (6.3 in)
1956
61.7 mm (2.4 in)
1957
116.1 mm (4.6 in)
1958
98.3 mm (3.9 in)
1959
113.5 mm (4.5 in)
1960
90.7 mm (3.6 in)
1961
50.3 mm (2.0 in)
1962
114.3 mm (4.5 in)
1963
205.7 mm (8.1 in)
1964
160.5 mm (6.3 in)
1965
86.4 mm (3.4 in)
1966
78.5 mm (3.1 in)
1967
96.0 mm (3.8 in)
1968
90.4 mm (3.6 in)
1969
150.6 mm (5.9 in)
1970
90.2 mm (3.6 in)
1971
71.4 mm (2.8 in)
1972
52.3 mm (2.1 in)
1973
88.9 mm (3.5 in)
1974
133.9 mm (5.3 in)
1975
84.8 mm (3.3 in)
1976
63.8 mm (2.5 in)
1977
107.4 mm (4.2 in)
1978
105.2 mm (4.1 in)
1979
99.1 mm (3.9 in)
1980
149.6 mm (5.9 in)
1981
147.1 mm (5.8 in)
1982
127.8 mm (5.0 in)
1983
113.5 mm (4.5 in)
1984
74.9 mm (2.9 in)
1985
88.1 mm (3.5 in)
1986
158.8 mm (6.3 in)
1987
103.1 mm (4.1 in)
1988
58.4 mm (2.3 in)
1989
123.4 mm (4.9 in)
1990
58.9 mm (2.3 in)
1991
94.2 mm (3.7 in)
1992
119.9 mm (4.7 in)
1993
83.3 mm (3.3 in)
1994
79.5 mm (3.1 in)
1995
105.2 mm (4.1 in)
1996
87.9 mm (3.5 in)
1997
199.4 mm (7.9 in)
1998
86.4 mm (3.4 in)
1999
89.9 mm (3.5 in)
2000
121.2 mm (4.8 in)
2001
69.9 mm (2.8 in)
2002
73.7 mm (2.9 in)
2003
71.4 mm (2.8 in)
2004
88.9 mm (3.5 in)
2005
118.6 mm (4.7 in)
2006
91.2 mm (3.6 in)
2007
70.9 mm (2.8 in)
2008
83.6 mm (3.3 in)
2009
139.7 mm (5.5 in)
2010
170.7 mm (6.7 in)
2011
178.8 mm (7.0 in)
2012
134.9 mm (5.3 in)
2013
36.3 mm (1.4 in)
2014
153.7 mm (6.1 in)
2015
116.6 mm (4.6 in)
2016
115.6 mm (4.6 in)
2017
177.3 mm (7.0 in)
2018
138.4 mm (5.4 in)
2019
102.9 mm (4.1 in)
2020
72.4 mm (2.9 in)
2021
156.0 mm (6.1 in)
2022
129.5 mm (5.1 in)
2023
161.8 mm (6.4 in)
2024
122.4 mm (4.8 in)
2025
170.2 mm (6.7 in)
2026
110.0 mm (4.3 in)
Wettest five days (Rx5day)
The wettest five days of the year at Calaveras Big Trees, 1929 to 2026. The record is 661.0 mm (26.0 in) in 1986, marked on the chart; the median year is 219.5 mm (8.6 in).
Wettest five days (Rx5day) at Calaveras Big Trees by year
Year
Wettest five days (Rx5day)
1929
160.5 mm (6.3 in)
1930
201.0 mm (7.9 in)
1931
282.0 mm (11.1 in)
1932
170.2 mm (6.7 in)
1933
217.4 mm (8.6 in)
1934
135.9 mm (5.4 in)
1935
165.4 mm (6.5 in)
1936
297.2 mm (11.7 in)
1937
371.8 mm (14.6 in)
1938
267.7 mm (10.5 in)
1939
131.6 mm (5.2 in)
1940
223.1 mm (8.8 in)
1941
184.8 mm (7.3 in)
1942
245.2 mm (9.7 in)
1943
426.7 mm (16.8 in)
1944
211.3 mm (8.3 in)
1945
314.2 mm (12.4 in)
1946
304.3 mm (12.0 in)
1947
102.3 mm (4.0 in)
1948
193.0 mm (7.6 in)
1949
149.9 mm (5.9 in)
1950
419.4 mm (16.5 in)
1951
238.5 mm (9.4 in)
1952
290.6 mm (11.4 in)
1953
130.6 mm (5.1 in)
1954
159.7 mm (6.3 in)
1955
518.0 mm (20.4 in)
1956
163.0 mm (6.4 in)
1957
174.4 mm (6.9 in)
1958
259.7 mm (10.2 in)
1959
216.4 mm (8.5 in)
1960
226.1 mm (8.9 in)
1961
149.1 mm (5.9 in)
1962
311.6 mm (12.3 in)
1963
504.0 mm (19.8 in)
1964
442.9 mm (17.4 in)
1965
228.9 mm (9.0 in)
1966
264.4 mm (10.4 in)
1967
241.1 mm (9.5 in)
1968
155.7 mm (6.1 in)
1969
475.4 mm (18.7 in)
1970
232.4 mm (9.1 in)
1971
196.5 mm (7.7 in)
1972
94.3 mm (3.7 in)
1973
152.7 mm (6.0 in)
1974
248.9 mm (9.8 in)
1975
181.9 mm (7.2 in)
1976
110.3 mm (4.3 in)
1977
163.3 mm (6.4 in)
1978
251.5 mm (9.9 in)
1979
219.5 mm (8.6 in)
1980
408.0 mm (16.1 in)
1981
265.7 mm (10.5 in)
1982
282.5 mm (11.1 in)
1983
263.5 mm (10.4 in)
1984
133.0 mm (5.2 in)
1985
147.8 mm (5.8 in)
1986
661.0 mm (26.0 in)
1987
158.3 mm (6.2 in)
1988
141.3 mm (5.6 in)
1989
229.7 mm (9.0 in)
1990
107.4 mm (4.2 in)
1991
220.0 mm (8.7 in)
1992
297.7 mm (11.7 in)
1993
181.0 mm (7.1 in)
1994
151.1 mm (5.9 in)
1995
258.6 mm (10.2 in)
1996
228.8 mm (9.0 in)
1997
359.8 mm (14.2 in)
1998
238.9 mm (9.4 in)
1999
226.7 mm (8.9 in)
2000
250.1 mm (9.8 in)
2001
172.0 mm (6.8 in)
2002
237.5 mm (9.4 in)
2003
146.3 mm (5.8 in)
2004
215.1 mm (8.5 in)
2005
232.9 mm (9.2 in)
2006
272.0 mm (10.7 in)
2007
193.1 mm (7.6 in)
2008
155.7 mm (6.1 in)
2009
174.2 mm (6.9 in)
2010
223.3 mm (8.8 in)
2011
146.3 mm (5.8 in)
2012
218.0 mm (8.6 in)
2013
38.0 mm (1.5 in)
2014
256.8 mm (10.1 in)
2015
214.1 mm (8.4 in)
2016
207.5 mm (8.2 in)
2017
331.5 mm (13.1 in)
2018
138.2 mm (5.4 in)
2019
238.7 mm (9.4 in)
2020
158.5 mm (6.2 in)
2021
279.2 mm (11.0 in)
2022
277.3 mm (10.9 in)
2023
204.0 mm (8.0 in)
2024
n/a
2025
105.7 mm (4.2 in)
2026
206.6 mm (8.1 in)
Longest dry spell (CDD)
The longest dry spell of the year at Calaveras Big Trees, 1929 to 2026. The record is 168 days in 2002, marked on the chart; the median year is 84 days.
Longest dry spell (CDD) at Calaveras Big Trees by year
Year
Longest dry spell (CDD)
1929
68 days
1930
86 days
1931
70 days
1932
111 days
1933
112 days
1934
100 days
1935
124 days
1936
100 days
1937
97 days
1938
62 days
1939
97 days
1940
79 days
1941
110 days
1942
137 days
1943
138 days
1944
98 days
1945
90 days
1946
59 days
1947
122 days
1948
108 days
1949
100 days
1950
87 days
1951
140 days
1952
57 days
1953
101 days
1954
148 days
1955
122 days
1956
86 days
1957
111 days
1958
55 days
1959
86 days
1960
101 days
1961
73 days
1962
75 days
1963
93 days
1964
75 days
1965
54 days
1966
52 days
1967
95 days
1968
77 days
1969
82 days
1970
112 days
1971
94 days
1972
110 days
1973
87 days
1974
84 days
1975
50 days
1976
77 days
1977
79 days
1978
68 days
1979
78 days
1980
66 days
1981
80 days
1982
47 days
1983
68 days
1984
105 days
1985
40 days
1986
76 days
1987
153 days
1988
129 days
1989
75 days
1990
46 days
1991
48 days
1992
66 days
1993
86 days
1994
127 days
1995
160 days
1996
78 days
1997
56 days
1998
84 days
1999
67 days
2000
83 days
2001
79 days
2002
168 days
2003
65 days
2004
141 days
2005
94 days
2006
131 days
2007
86 days
2008
127 days
2009
70 days
2010
99 days
2011
62 days
2012
1 day
2013
47 days
2014
47 days
2015
73 days
2016
76 days
2017
99 days
2018
101 days
2019
82 days
2020
87 days
2021
21 days
2022
51 days
2023
10 days
2024
4 days
2025
17 days
2026
88 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
77 years with a frost
Across 77 years with a frost, the median last spring frost at Calaveras Big Trees falls on 22 May and the median first autumn frost on 12 October, which leaves a median of 146 days between them.
In 1982 to 2018 the median growing season was 154 days. That is 8 days more than in 1930 to 1961.
Fitted over all years, the growing season changes by +2.1 days per decade at this station.
Frost dates and growing season at Calaveras Big Trees
Measure
Median, all years
Earliest period (1930 to 1961)
Recent period (1982 to 2018)
Recent against earliest
Fitted trend
Last spring frost
22 May
19 May
19 May
no change
-0.7 days per decade
First autumn frost
12 October
14 October
20 October
6 days later
+1.4 days per decade
Growing days
146 days
146 days
154 days
8 days more
+2.1 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
84 years, 1930 to 2019
A day with at least 98.2 mm (3.9 in) of rain is expected about once in 2 years. A day with at least 227.5 mm (9.0 in) of rain is expected about once in 100 years.
Rainfall return levels at Calaveras Big Trees: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
98.2 mm (3.9 in)
5 years
129.9 mm (5.1 in)
10 years
152.0 mm (6.0 in)
25 years
181.3 mm (7.1 in)
50 years
204.0 mm (8.0 in)
100 years
227.5 mm (9.0 in)
Longer than the 84 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, 84 years of values from 1930 to 2019.
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: 205.7 mm (8.1 in) in 1963; 202.2 mm (8.0 in) in 1937; 199.4 mm (7.9 in) in 1997.
Station Changes
2 suspected
2 changes were suspected in the annual mean temperature of Calaveras Big Trees, at 1987 and 2007. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1987 ran 0.4 C (0.6 F) lower than in the years before (likely change).
Relative to 5 neighbouring stations, the station's annual mean temperature from 2007 ran 0.3 C (0.5 F) higher than in the years before (likely change).
Suspected changes in the annual mean temperature at Calaveras Big Trees, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1987
-0.4
-0.6
likely
5
2007
+0.3
+0.5
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 Calaveras Big Trees standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Calaveras Big Trees 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.