Record envelope, standing records and threshold days for Mitchell Caverns (USC00045721), California, United States, with 54 years of record.
Key Facts for Mitchell Caverns
Mitchell Caverns (USC00045721) is a weather station in California, United States at 34.94 latitude and -115.55 longitude, 1,326 m (4,350 ft) above sea level.
The station reports from 1958 to 2011, 54 years of record.
1,464 records set at Mitchell Caverns still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Mitchell Caverns set a daily record low maximum temperature of 7.8 C (46.0 F) on 10 April 2011.
About the Station
Location: California, United States, 34.94 latitude, -115.55 longitude.
Elevation: 1,326 m (4,350 ft).
Period of record: 1958 to 2011, 54 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 Mitchell Caverns. 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 Mitchell Caverns, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
25.0 C (77.0 F)
-10.6 C (12.9 F)
n/a
n/a
Feb
27.2 C (81.0 F)
-13.3 C (8.1 F)
n/a
n/a
Mar
28.9 C (84.0 F)
-7.8 C (18.0 F)
n/a
n/a
Apr
31.7 C (89.1 F)
-3.9 C (25.0 F)
n/a
n/a
May
36.7 C (98.1 F)
-2.2 C (28.0 F)
n/a
n/a
Jun
41.1 C (106.0 F)
1.1 C (34.0 F)
n/a
n/a
Jul
43.3 C (109.9 F)
5.0 C (41.0 F)
n/a
n/a
Aug
41.1 C (106.0 F)
0.6 C (33.1 F)
n/a
n/a
Sep
37.8 C (100.0 F)
3.3 C (37.9 F)
n/a
n/a
Oct
36.1 C (97.0 F)
-4.4 C (24.1 F)
n/a
n/a
Nov
28.3 C (82.9 F)
-8.3 C (17.1 F)
n/a
n/a
Dec
24.4 C (75.9 F)
-11.7 C (10.9 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Mitchell Caverns still stand. 1990 holds the most, with 69.
Standing records at Mitchell Caverns by the year they were set
Year set
Standing records
1958
30
1959
25
1960
37
1961
27
1962
52
1963
35
1964
41
1965
25
1966
25
1967
25
1968
16
1969
24
1970
21
1971
60
1972
29
1973
15
1974
22
1975
23
1976
23
1977
34
1978
14
1979
25
1980
49
1981
20
1982
21
1983
16
1984
21
1985
40
1986
27
1987
19
1988
17
1989
50
1990
69
1991
30
1992
8
1993
60
1994
26
1995
27
1996
43
1997
19
1998
16
1999
26
2000
24
2001
15
2002
21
2003
30
2004
21
2005
12
2006
11
2007
32
2008
23
2009
20
2010
19
2011
4
All-Time Record Progression
4 new records
4 all-time records were set at Mitchell Caverns between 6 February 1989 and 25 July 1990. Each dot is a new record.
When Mitchell Caverns set new all-time records
Date
Kind
Detail
1989-02-06
Record low minimum temperature
Record low minimum temperature -11.1 C (12.0 F)
1990-02-19
Record low minimum temperature
Record low minimum temperature -13.3 C (8.1 F)
1990-07-22
Record high minimum temperature
Record high minimum temperature 33.3 C (91.9 F)
1990-07-25
Record high minimum temperature
Record high minimum temperature 33.9 C (93.0 F)
Wettest Day of Each Month
Jul: 143.8 mm (5.7 in)
The wettest day on record for each calendar month at Mitchell Caverns. The most was 143.8 mm (5.7 in) on 27 July 1984.
Record daily precipitation for each month at Mitchell Caverns
Month
Record daily precipitation (mm)
Date
Jan
59.4 mm (2.3 in)
4 January 1989
Feb
114.3 mm (4.5 in)
14 February 1980
Mar
66.3 mm (2.6 in)
3 March 1983
Apr
35.6 mm (1.4 in)
3 April 1965
May
24.1 mm (0.9 in)
27 May 1981
Jun
17.0 mm (0.7 in)
7 June 1972
Jul
143.8 mm (5.7 in)
27 July 1984
Aug
98.6 mm (3.9 in)
12 August 1979
Sep
67.6 mm (2.7 in)
7 September 1982
Oct
41.1 mm (1.6 in)
21 October 2004
Nov
44.5 mm (1.8 in)
1 November 1987
Dec
129.5 mm (5.1 in)
29 December 2004
Period of Record Coverage
1958 to 2011
Complete yearUnder 90 percent of days
54 years of record at Mitchell Caverns, 1958 to 2011. 5 years have data for under 90 percent of days and are left out of rankings: 1958, 1972, 1992, 2005, 2011.
Cooler than the station meanWarmer than the station mean
One stripe for each of 44 complete years at Mitchell Caverns, 1959 to 2010. Blue stripes are years cooler than the station's own mean of 17.1 C (62.7 F); red stripes are warmer. The coolest year was 1993, at 15.3 C (59.5 F), and the warmest was 1959, at 18.2 C (64.8 F). The strongest colour marks a difference of 1.8 C (3.2 F).
Annual mean temperature at Mitchell Caverns as warming stripes, 1959 to 2010
Year
Annual mean temperature
Difference from the station mean
1959
18.2 C
+1.13 C
1960
17.6 C
+0.52 C
1961
17.1 C
+0.05 C
1962
18.0 C
+0.88 C
1963
17.4 C
+0.30 C
1964
16.6 C
-0.46 C
1965
16.7 C
-0.35 C
1966
17.7 C
+0.63 C
1967
17.2 C
+0.14 C
1968
17.5 C
+0.45 C
1969
17.2 C
+0.14 C
1970
17.1 C
+0.05 C
1971
16.3 C
-0.81 C
1973
16.4 C
-0.71 C
1974
17.5 C
+0.42 C
1975
16.8 C
-0.33 C
1976
17.3 C
+0.22 C
1977
17.1 C
-0.03 C
1978
16.7 C
-0.37 C
1979
16.8 C
-0.29 C
1981
17.8 C
+0.75 C
1982
15.8 C
-1.25 C
1983
16.1 C
-1.03 C
1984
16.4 C
-0.73 C
1985
16.7 C
-0.41 C
1986
17.2 C
+0.11 C
1987
16.4 C
-0.67 C
1988
17.0 C
-0.07 C
1989
17.6 C
+0.52 C
1990
17.6 C
+0.47 C
1991
16.7 C
-0.43 C
1993
15.3 C
-1.80 C
1994
17.1 C
+0.06 C
1995
17.6 C
+0.55 C
1996
18.2 C
+1.08 C
1997
17.8 C
+0.74 C
1998
16.1 C
-1.00 C
1999
17.4 C
+0.35 C
2000
17.8 C
+0.70 C
2004
16.9 C
-0.23 C
2006
17.6 C
+0.52 C
2007
17.6 C
+0.50 C
2009
17.4 C
+0.27 C
2010
16.5 C
-0.61 C
The fitted trend in annual mean temperature here over 1959 to 2010 is -0.03 C (-0.17 to 0.10) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.1 F (-0.3 to 0.2) per decade. The slope is a straight line fitted to 44 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Mitchell Caverns
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.03 C (-0.17 to 0.10) per decade
-0.1 F (-0.3 to 0.2) per decade
1959 to 2010
44
Not clearly different from zero
Mean daily maximum
-0.01 C (-0.16 to 0.15) per decade
-0.01 F (-0.29 to 0.27) per decade
1959 to 2010
44
Not clearly different from zero
Mean daily minimum
-0.1 C (-0.3 to 0.1) per decade
-0.1 F (-0.5 to 0.2) per decade
1959 to 2010
44
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
1958 to 2011
Yearly extremes at Mitchell Caverns: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
43.3 C (109.9 F)
1980
38.9 C (102.0 F)
54
Coldest night (TNn)
-13.3 C (8.1 F)
1990
-5.6 C (21.9 F)
54
Wettest day (Rx1day)
143.8 mm (5.7 in)
1984
37.0 mm (1.5 in)
54
Wettest five days (Rx5day)
209.1 mm (8.2 in)
1983
57.3 mm (2.3 in)
54
Longest dry spell (CDD)
191 days
2009
83 days
54
Hottest day (TXx)
The hottest day of the year at Mitchell Caverns, 1958 to 2011. The record is 43.3 C (109.9 F) in 1980, marked on the chart; the median year is 38.9 C (102.0 F).
Hottest day (TXx) at Mitchell Caverns by year
Year
Hottest day (TXx)
1958
40.0 C (104.0 F)
1959
40.0 C (104.0 F)
1960
41.1 C (106.0 F)
1961
40.6 C (105.1 F)
1962
38.9 C (102.0 F)
1963
36.7 C (98.1 F)
1964
38.3 C (100.9 F)
1965
37.2 C (99.0 F)
1966
38.3 C (100.9 F)
1967
40.0 C (104.0 F)
1968
39.4 C (102.9 F)
1969
40.0 C (104.0 F)
1970
41.1 C (106.0 F)
1971
38.3 C (100.9 F)
1972
40.6 C (105.1 F)
1973
39.4 C (102.9 F)
1974
40.0 C (104.0 F)
1975
38.3 C (100.9 F)
1976
39.4 C (102.9 F)
1977
39.4 C (102.9 F)
1978
38.3 C (100.9 F)
1979
38.3 C (100.9 F)
1980
43.3 C (109.9 F)
1981
38.9 C (102.0 F)
1982
37.8 C (100.0 F)
1983
37.8 C (100.0 F)
1984
37.2 C (99.0 F)
1985
40.6 C (105.1 F)
1986
37.8 C (100.0 F)
1987
37.2 C (99.0 F)
1988
38.9 C (102.0 F)
1989
40.6 C (105.1 F)
1990
40.0 C (104.0 F)
1991
38.9 C (102.0 F)
1992
37.2 C (99.0 F)
1993
41.1 C (106.0 F)
1994
40.6 C (105.1 F)
1995
40.6 C (105.1 F)
1996
40.6 C (105.1 F)
1997
40.6 C (105.1 F)
1998
40.6 C (105.1 F)
1999
37.2 C (99.0 F)
2000
38.3 C (100.9 F)
2001
38.9 C (102.0 F)
2002
37.8 C (100.0 F)
2003
38.9 C (102.0 F)
2004
38.3 C (100.9 F)
2005
40.0 C (104.0 F)
2006
38.9 C (102.0 F)
2007
40.6 C (105.1 F)
2008
36.7 C (98.1 F)
2009
38.3 C (100.9 F)
2010
38.3 C (100.9 F)
2011
28.3 C (82.9 F)
Coldest night (TNn)
The coldest night of the year at Mitchell Caverns, 1958 to 2011. The record is -13.3 C (8.1 F) in 1990, marked on the chart; the median year is -5.6 C (21.9 F).
Coldest night (TNn) at Mitchell Caverns by year
Year
Coldest night (TNn)
1958
-8.3 C (17.1 F)
1959
-7.8 C (18.0 F)
1960
-6.1 C (21.0 F)
1961
-5.0 C (23.0 F)
1962
-7.8 C (18.0 F)
1963
-10.6 C (12.9 F)
1964
-4.4 C (24.1 F)
1965
-3.9 C (25.0 F)
1966
-4.4 C (24.1 F)
1967
-6.7 C (19.9 F)
1968
-6.7 C (19.9 F)
1969
-5.0 C (23.0 F)
1970
-3.3 C (26.1 F)
1971
-8.9 C (16.0 F)
1972
-8.3 C (17.1 F)
1973
-6.1 C (21.0 F)
1974
-8.3 C (17.1 F)
1975
-4.4 C (24.1 F)
1976
-5.6 C (21.9 F)
1977
-2.2 C (28.0 F)
1978
-8.3 C (17.1 F)
1979
-8.3 C (17.1 F)
1980
-1.1 C (30.0 F)
1981
-0.6 C (30.9 F)
1982
-9.4 C (15.1 F)
1983
-3.3 C (26.1 F)
1984
-9.4 C (15.1 F)
1985
-8.3 C (17.1 F)
1986
-4.4 C (24.1 F)
1987
-7.8 C (18.0 F)
1988
-8.3 C (17.1 F)
1989
-11.1 C (12.0 F)
1990
-13.3 C (8.1 F)
1991
-7.2 C (19.0 F)
1992
-4.4 C (24.1 F)
1993
-5.0 C (23.0 F)
1994
-7.8 C (18.0 F)
1995
-2.2 C (28.0 F)
1996
-5.6 C (21.9 F)
1997
-3.3 C (26.1 F)
1998
-7.8 C (18.0 F)
1999
-3.3 C (26.1 F)
2000
-1.7 C (28.9 F)
2001
-3.3 C (26.1 F)
2002
-3.9 C (25.0 F)
2003
-2.2 C (28.0 F)
2004
-3.3 C (26.1 F)
2005
-2.2 C (28.0 F)
2006
-4.4 C (24.1 F)
2007
-8.3 C (17.1 F)
2008
-4.4 C (24.1 F)
2009
-5.6 C (21.9 F)
2010
-6.1 C (21.0 F)
2011
-6.7 C (19.9 F)
Wettest day (Rx1day)
The wettest day of the year at Mitchell Caverns, 1958 to 2011. The record is 143.8 mm (5.7 in) in 1984, marked on the chart; the median year is 37.0 mm (1.5 in).
Wettest day (Rx1day) at Mitchell Caverns by year
Year
Wettest day (Rx1day)
1958
21.3 mm (0.8 in)
1959
48.3 mm (1.9 in)
1960
35.6 mm (1.4 in)
1961
33.8 mm (1.3 in)
1962
10.7 mm (0.4 in)
1963
52.1 mm (2.1 in)
1964
29.2 mm (1.1 in)
1965
35.6 mm (1.4 in)
1966
33.0 mm (1.3 in)
1967
16.3 mm (0.6 in)
1968
37.1 mm (1.5 in)
1969
32.5 mm (1.3 in)
1970
23.1 mm (0.9 in)
1971
20.1 mm (0.8 in)
1972
17.0 mm (0.7 in)
1973
18.3 mm (0.7 in)
1974
24.9 mm (1.0 in)
1975
16.5 mm (0.6 in)
1976
63.8 mm (2.5 in)
1977
94.7 mm (3.7 in)
1978
31.8 mm (1.3 in)
1979
98.6 mm (3.9 in)
1980
114.3 mm (4.5 in)
1981
33.0 mm (1.3 in)
1982
67.6 mm (2.7 in)
1983
68.6 mm (2.7 in)
1984
143.8 mm (5.7 in)
1985
37.6 mm (1.5 in)
1986
31.8 mm (1.3 in)
1987
44.5 mm (1.8 in)
1988
62.0 mm (2.4 in)
1989
59.4 mm (2.3 in)
1990
38.1 mm (1.5 in)
1991
27.9 mm (1.1 in)
1992
55.9 mm (2.2 in)
1993
72.4 mm (2.9 in)
1994
51.3 mm (2.0 in)
1995
43.4 mm (1.7 in)
1996
20.8 mm (0.8 in)
1997
35.6 mm (1.4 in)
1998
55.9 mm (2.2 in)
1999
40.6 mm (1.6 in)
2000
29.2 mm (1.1 in)
2001
36.8 mm (1.4 in)
2002
25.9 mm (1.0 in)
2003
38.1 mm (1.5 in)
2004
129.5 mm (5.1 in)
2005
43.2 mm (1.7 in)
2006
21.3 mm (0.8 in)
2007
57.4 mm (2.3 in)
2008
50.8 mm (2.0 in)
2009
24.9 mm (1.0 in)
2010
104.1 mm (4.1 in)
2011
15.2 mm (0.6 in)
Wettest five days (Rx5day)
The wettest five days of the year at Mitchell Caverns, 1958 to 2011. The record is 209.1 mm (8.2 in) in 1983, marked on the chart; the median year is 57.3 mm (2.3 in).
Wettest five days (Rx5day) at Mitchell Caverns by year
Year
Wettest five days (Rx5day)
1958
35.0 mm (1.4 in)
1959
74.9 mm (2.9 in)
1960
48.0 mm (1.9 in)
1961
34.8 mm (1.4 in)
1962
18.3 mm (0.7 in)
1963
85.4 mm (3.4 in)
1964
30.0 mm (1.2 in)
1965
43.5 mm (1.7 in)
1966
34.3 mm (1.4 in)
1967
31.8 mm (1.3 in)
1968
43.2 mm (1.7 in)
1969
50.4 mm (2.0 in)
1970
33.8 mm (1.3 in)
1971
29.2 mm (1.1 in)
1972
19.3 mm (0.8 in)
1973
27.5 mm (1.1 in)
1974
29.5 mm (1.2 in)
1975
30.2 mm (1.2 in)
1976
148.3 mm (5.8 in)
1977
155.7 mm (6.1 in)
1978
76.7 mm (3.0 in)
1979
196.9 mm (7.8 in)
1980
192.3 mm (7.6 in)
1981
58.5 mm (2.3 in)
1982
71.9 mm (2.8 in)
1983
209.1 mm (8.2 in)
1984
177.0 mm (7.0 in)
1985
44.5 mm (1.8 in)
1986
64.5 mm (2.5 in)
1987
85.6 mm (3.4 in)
1988
102.7 mm (4.0 in)
1989
62.2 mm (2.4 in)
1990
50.0 mm (2.0 in)
1991
73.4 mm (2.9 in)
1992
83.5 mm (3.3 in)
1993
72.4 mm (2.9 in)
1994
57.1 mm (2.2 in)
1995
68.6 mm (2.7 in)
1996
23.6 mm (0.9 in)
1997
57.5 mm (2.3 in)
1998
69.9 mm (2.8 in)
1999
40.9 mm (1.6 in)
2000
45.5 mm (1.8 in)
2001
75.3 mm (3.0 in)
2002
28.6 mm (1.1 in)
2003
43.2 mm (1.7 in)
2004
129.5 mm (5.1 in)
2005
129.5 mm (5.1 in)
2006
25.4 mm (1.0 in)
2007
58.7 mm (2.3 in)
2008
68.6 mm (2.7 in)
2009
27.7 mm (1.1 in)
2010
126.5 mm (5.0 in)
2011
16.0 mm (0.6 in)
Longest dry spell (CDD)
The longest dry spell of the year at Mitchell Caverns, 1958 to 2011. The record is 191 days in 2009, marked on the chart; the median year is 83 days.
Longest dry spell (CDD) at Mitchell Caverns by year
Year
Longest dry spell (CDD)
1958
87 days
1959
130 days
1960
118 days
1961
86 days
1962
153 days
1963
64 days
1964
89 days
1965
60 days
1966
62 days
1967
77 days
1968
99 days
1969
56 days
1970
58 days
1971
53 days
1972
158 days
1973
93 days
1974
103 days
1975
123 days
1976
100 days
1977
80 days
1978
84 days
1979
111 days
1980
66 days
1981
55 days
1982
78 days
1983
66 days
1984
96 days
1985
43 days
1986
120 days
1987
51 days
1988
78 days
1989
102 days
1990
60 days
1991
65 days
1992
71 days
1993
82 days
1994
70 days
1995
98 days
1996
70 days
1997
109 days
1998
69 days
1999
57 days
2000
115 days
2001
84 days
2002
82 days
2003
82 days
2004
88 days
2005
73 days
2006
94 days
2007
161 days
2008
92 days
2009
191 days
2010
179 days
2011
27 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
44 years with a frost
Across 44 years with a frost, the median last spring frost at Mitchell Caverns falls on 1 April and the median first autumn frost on 23 November, which leaves a median of 235 days between them.
Fitted over all years, the growing season changes by -0.1 days per decade at this station.
Frost dates and growing season at Mitchell Caverns
Measure
Median, all years
Earliest period
Recent period (1974 to 2010)
Recent against earliest
Fitted trend
Last spring frost
1 April
n/a
1 April
n/a
-1.0 days per decade
First autumn frost
23 November
n/a
22 November
n/a
-1.0 days per decade
Growing days
235 days
n/a
235 days
n/a
-0.1 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
50 years, 1959 to 2010
A day with at least 39.2 mm (1.5 in) of rain is expected about once in 2 years. A day with at least 170.4 mm (6.7 in) of rain is expected about once in 100 years.
Rainfall return levels at Mitchell Caverns: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
39.2 mm (1.5 in)
5 years
63.3 mm (2.5 in)
10 years
82.9 mm (3.3 in)
25 years
112.9 mm (4.4 in)
50 years
139.5 mm (5.5 in)
100 years
170.4 mm (6.7 in)
Longer than the 50 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, 50 years of values from 1959 to 2010.
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: 143.8 mm (5.7 in) in 1984; 129.5 mm (5.1 in) in 2004; 114.3 mm (4.5 in) in 1980.
Station Changes
1 suspected
One change was suspected in the annual mean temperature of Mitchell Caverns, at 1977. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1977 ran 0.4 C (0.6 F) lower than in the years before (possible change).
Suspected changes in the annual mean temperature at Mitchell Caverns, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1977
-0.3
-0.6
possible
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 Mitchell Caverns standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Mitchell Caverns 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.