Record envelope, standing records and threshold days for Tehachapi (USC00048826), California, United States, with 105 years of record.
Key Facts for Tehachapi
Tehachapi (USC00048826) is a weather station in California, United States at 35.13 latitude and -118.45 longitude, 1,224 m (4,017 ft) above sea level.
The station reports from 1893 to 1997, 105 years of record.
1,464 records set at Tehachapi still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Tehachapi set a daily record low maximum temperature of 16.7 C (62.1 F) on 30 June 1997.
About the Station
Location: California, United States, 35.13 latitude, -118.45 longitude.
Elevation: 1,224 m (4,017 ft).
Period of record: 1893 to 1997, 105 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 Tehachapi. 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 Tehachapi, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
24.4 C (75.9 F)
-18.9 C (-2.0 F)
n/a
n/a
Feb
25.6 C (78.1 F)
-14.4 C (6.1 F)
n/a
n/a
Mar
27.2 C (81.0 F)
-12.8 C (9.0 F)
n/a
n/a
Apr
31.7 C (89.1 F)
-8.3 C (17.1 F)
n/a
n/a
May
36.1 C (97.0 F)
-3.3 C (26.1 F)
n/a
n/a
Jun
40.0 C (104.0 F)
-1.7 C (28.9 F)
n/a
n/a
Jul
40.6 C (105.1 F)
2.2 C (36.0 F)
n/a
n/a
Aug
40.0 C (104.0 F)
1.1 C (34.0 F)
n/a
n/a
Sep
38.9 C (102.0 F)
-5.6 C (21.9 F)
n/a
n/a
Oct
35.6 C (96.1 F)
-8.3 C (17.1 F)
n/a
n/a
Nov
29.4 C (84.9 F)
-14.4 C (6.1 F)
n/a
n/a
Dec
27.2 C (81.0 F)
-18.9 C (-2.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Tehachapi still stand. 1950 holds the most, with 48.
Standing records at Tehachapi by the year they were set
Year set
Standing records
1893
27
1894
28
1906
10
1918
14
1919
1
1926
25
1927
25
1928
22
1929
18
1930
32
1931
32
1932
36
1933
36
1934
34
1935
27
1936
24
1945
23
1946
45
1947
37
1948
22
1949
45
1950
48
1951
25
1952
18
1953
26
1954
25
1955
25
1956
12
1957
21
1958
25
1959
27
1960
21
1961
20
1962
21
1963
21
1964
16
1965
22
1966
13
1967
24
1968
15
1969
11
1970
12
1971
29
1972
25
1973
12
1974
14
1975
23
1976
20
1977
11
1978
25
1979
14
1980
31
1981
16
1982
5
1983
9
1984
12
1985
17
1986
9
1987
25
1988
20
1989
20
1990
19
1991
19
1992
18
1993
13
1994
7
1995
6
1996
24
1997
10
All-Time Record Progression
4 new records
4 all-time records were set at Tehachapi between 29 November 1970 and 22 December 1990. Each dot is a new record.
When Tehachapi set new all-time records
Date
Kind
Detail
1970-11-29
Record daily precipitation
Record daily precipitation 83.6 mm (3.3 in)
1983-03-01
Record daily precipitation
Record daily precipitation 86.4 mm (3.4 in)
1990-12-21
Record low maximum temperature
Record low maximum temperature -5.0 C (23.0 F)
1990-12-22
Record low maximum temperature
Record low maximum temperature -5.6 C (21.9 F)
Wettest Day of Each Month
Mar: 86.4 mm (3.4 in)
The wettest day on record for each calendar month at Tehachapi. The most was 86.4 mm (3.4 in) on 1 March 1983.
Record daily precipitation for each month at Tehachapi
Month
Record daily precipitation (mm)
Date
Jan
76.2 mm (3.0 in)
3 January 1917
Feb
81.8 mm (3.2 in)
10 February 1978
Mar
86.4 mm (3.4 in)
1 March 1983
Apr
45.0 mm (1.8 in)
28 April 1951
May
49.5 mm (1.9 in)
8 May 1977
Jun
16.8 mm (0.7 in)
12 June 1963
Jul
50.8 mm (2.0 in)
21 July 1913
Aug
51.6 mm (2.0 in)
12 August 1931
Sep
55.9 mm (2.2 in)
30 September 1932
Oct
72.1 mm (2.8 in)
6 October 1945
Nov
83.6 mm (3.3 in)
29 November 1970
Dec
55.6 mm (2.2 in)
29 December 1964
Period of Record Coverage
1893 to 1997
Complete yearUnder 90 percent of days
68 years of record at Tehachapi, 1893 to 1997. 16 years have data for under 90 percent of days and are left out of rankings: 1894, 1918, 1919, 1926, 1936, 1968, 1982, 1984 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 54 complete years at Tehachapi, 1893 to 1995. Blue stripes are years cooler than the station's own mean of 12.4 C (54.3 F); red stripes are warmer. The coolest year was 1948, at 11.3 C (52.3 F), and the warmest was 1980, at 13.4 C (56.1 F). The strongest colour marks a difference of 1.2 C (2.2 F).
Annual mean temperature at Tehachapi as warming stripes, 1893 to 1995
Year
Annual mean temperature
Difference from the station mean
1893
11.3 C
-1.05 C
1927
11.4 C
-0.95 C
1928
12.0 C
-0.41 C
1930
11.9 C
-0.50 C
1931
12.8 C
+0.42 C
1932
11.6 C
-0.74 C
1933
12.0 C
-0.34 C
1935
12.1 C
-0.24 C
1945
11.6 C
-0.77 C
1946
11.7 C
-0.68 C
1947
12.2 C
-0.21 C
1948
11.3 C
-1.12 C
1949
11.7 C
-0.70 C
1950
13.0 C
+0.67 C
1951
12.5 C
+0.09 C
1952
12.0 C
-0.34 C
1954
12.7 C
+0.30 C
1955
11.9 C
-0.46 C
1956
12.0 C
-0.42 C
1957
12.0 C
-0.40 C
1958
13.0 C
+0.67 C
1959
13.2 C
+0.82 C
1960
12.5 C
+0.12 C
1961
12.4 C
+0.04 C
1962
12.1 C
-0.27 C
1963
12.0 C
-0.37 C
1964
11.5 C
-0.92 C
1965
11.7 C
-0.66 C
1966
12.6 C
+0.18 C
1967
12.5 C
+0.15 C
1969
12.2 C
-0.17 C
1970
12.7 C
+0.32 C
1971
11.6 C
-0.80 C
1972
12.6 C
+0.21 C
1973
12.4 C
+0.03 C
1974
12.7 C
+0.31 C
1975
12.3 C
-0.10 C
1976
12.9 C
+0.52 C
1977
13.0 C
+0.58 C
1978
12.7 C
+0.32 C
1979
12.8 C
+0.40 C
1980
13.4 C
+1.04 C
1983
12.4 C
+0.03 C
1984
13.1 C
+0.71 C
1985
12.6 C
+0.21 C
1986
13.2 C
+0.81 C
1987
12.7 C
+0.33 C
1988
13.1 C
+0.71 C
1989
13.0 C
+0.59 C
1990
12.8 C
+0.38 C
1991
12.7 C
+0.30 C
1992
13.2 C
+0.82 C
1993
12.4 C
+0.06 C
1995
12.9 C
+0.51 C
The annual mean temperature here has risen by 0.2 C (0.1 to 0.2) per decade over 1893 to 1995. In Fahrenheit: 0.3 F (0.2 to 0.4) per decade. The slope is a straight line fitted to 54 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Tehachapi
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.2 C (0.1 to 0.2) per decade
0.3 F (0.2 to 0.4) per decade
1893 to 1995
54
Rise
Mean daily maximum
0.03 C (-0.05 to 0.11) per decade
0.1 F (-0.1 to 0.2) per decade
1893 to 1995
54
Not clearly different from zero
Mean daily minimum
0.3 C (0.2 to 0.4) per decade
0.5 F (0.4 to 0.7) per decade
1893 to 1995
54
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
1893 to 1997
Yearly extremes at Tehachapi: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
40.6 C (105.1 F)
1934
36.7 C (98.1 F)
68
Coldest night (TNn)
-18.9 C (-2.0 F)
1894
-10.6 C (12.9 F)
69
Wettest day (Rx1day)
86.4 mm (3.4 in)
1983
29.1 mm (1.1 in)
80
Wettest five days (Rx5day)
204.5 mm (8.1 in)
1983
50.1 mm (2.0 in)
79
Longest dry spell (CDD)
192 days
1970
87 days
80
Hottest day (TXx)
The hottest day of the year at Tehachapi, 1893 to 1997. The record is 40.6 C (105.1 F) in 1934, marked on the chart; the median year is 36.7 C (98.1 F).
Hottest day (TXx) at Tehachapi by year
Year
Hottest day (TXx)
1893
36.1 C (97.0 F)
1894
29.4 C (84.9 F)
1906
n/a
1907
n/a
1908
n/a
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
38.9 C (102.0 F)
1919
21.1 C (70.0 F)
1926
38.3 C (100.9 F)
1927
35.6 C (96.1 F)
1928
38.3 C (100.9 F)
1929
37.2 C (99.0 F)
1930
38.3 C (100.9 F)
1931
38.9 C (102.0 F)
1932
36.7 C (98.1 F)
1933
40.0 C (104.0 F)
1934
40.6 C (105.1 F)
1935
37.2 C (99.0 F)
1936
35.6 C (96.1 F)
1945
37.2 C (99.0 F)
1946
40.0 C (104.0 F)
1947
37.8 C (100.0 F)
1948
37.2 C (99.0 F)
1949
36.1 C (97.0 F)
1950
40.0 C (104.0 F)
1951
37.8 C (100.0 F)
1952
36.1 C (97.0 F)
1953
36.1 C (97.0 F)
1954
36.7 C (98.1 F)
1955
38.3 C (100.9 F)
1956
36.1 C (97.0 F)
1957
36.7 C (98.1 F)
1958
36.1 C (97.0 F)
1959
37.8 C (100.0 F)
1960
37.2 C (99.0 F)
1961
37.8 C (100.0 F)
1962
38.9 C (102.0 F)
1963
32.8 C (91.0 F)
1964
34.4 C (93.9 F)
1965
35.0 C (95.0 F)
1966
35.6 C (96.1 F)
1967
36.1 C (97.0 F)
1968
34.4 C (93.9 F)
1969
35.0 C (95.0 F)
1970
37.8 C (100.0 F)
1971
38.3 C (100.9 F)
1972
37.8 C (100.0 F)
1973
36.7 C (98.1 F)
1974
35.6 C (96.1 F)
1975
37.8 C (100.0 F)
1976
37.8 C (100.0 F)
1977
36.1 C (97.0 F)
1978
37.8 C (100.0 F)
1979
37.8 C (100.0 F)
1980
39.4 C (102.9 F)
1981
37.2 C (99.0 F)
1982
35.0 C (95.0 F)
1983
34.4 C (93.9 F)
1984
35.6 C (96.1 F)
1985
35.6 C (96.1 F)
1986
34.4 C (93.9 F)
1987
36.1 C (97.0 F)
1988
36.7 C (98.1 F)
1989
33.3 C (91.9 F)
1990
36.7 C (98.1 F)
1991
35.0 C (95.0 F)
1992
35.6 C (96.1 F)
1993
33.9 C (93.0 F)
1994
34.4 C (93.9 F)
1995
36.1 C (97.0 F)
1996
36.1 C (97.0 F)
1997
29.4 C (84.9 F)
Coldest night (TNn)
The coldest night of the year at Tehachapi, 1893 to 1997. The record is -18.9 C (-2.0 F) in 1894, marked on the chart; the median year is -10.6 C (12.9 F).
Coldest night (TNn) at Tehachapi by year
Year
Coldest night (TNn)
1893
-8.9 C (16.0 F)
1894
-18.9 C (-2.0 F)
1906
-1.1 C (30.0 F)
1907
n/a
1908
n/a
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
0.0 C (32.0 F)
1919
-9.4 C (15.1 F)
1926
-18.9 C (-2.0 F)
1927
-9.4 C (15.1 F)
1928
-13.3 C (8.1 F)
1929
-9.4 C (15.1 F)
1930
-17.2 C (1.0 F)
1931
-11.7 C (10.9 F)
1932
-13.9 C (7.0 F)
1933
-13.3 C (8.1 F)
1934
-6.7 C (19.9 F)
1935
-15.0 C (5.0 F)
1936
-8.9 C (16.0 F)
1945
-9.4 C (15.1 F)
1946
-11.7 C (10.9 F)
1947
-10.6 C (12.9 F)
1948
-12.8 C (9.0 F)
1949
-17.8 C (0.0 F)
1950
-12.8 C (9.0 F)
1951
-12.2 C (10.0 F)
1952
-14.4 C (6.1 F)
1953
-12.8 C (9.0 F)
1954
-10.0 C (14.0 F)
1955
-8.9 C (16.0 F)
1956
-8.9 C (16.0 F)
1957
-16.7 C (1.9 F)
1958
-14.4 C (6.1 F)
1959
-10.6 C (12.9 F)
1960
-13.9 C (7.0 F)
1961
-7.8 C (18.0 F)
1962
-13.3 C (8.1 F)
1963
-10.6 C (12.9 F)
1964
-11.1 C (12.0 F)
1965
-11.1 C (12.0 F)
1966
-10.6 C (12.9 F)
1967
-12.2 C (10.0 F)
1968
-12.2 C (10.0 F)
1969
-11.1 C (12.0 F)
1970
-8.9 C (16.0 F)
1971
-10.0 C (14.0 F)
1972
-13.9 C (7.0 F)
1973
-9.4 C (15.1 F)
1974
-8.3 C (17.1 F)
1975
-11.1 C (12.0 F)
1976
-10.6 C (12.9 F)
1977
-8.9 C (16.0 F)
1978
-11.1 C (12.0 F)
1979
-13.3 C (8.1 F)
1980
-5.6 C (21.9 F)
1981
-6.7 C (19.9 F)
1982
-9.4 C (15.1 F)
1983
-6.7 C (19.9 F)
1984
-11.1 C (12.0 F)
1985
-8.3 C (17.1 F)
1986
-7.2 C (19.0 F)
1987
-12.8 C (9.0 F)
1988
-10.6 C (12.9 F)
1989
-12.2 C (10.0 F)
1990
-12.8 C (9.0 F)
1991
-6.1 C (21.0 F)
1992
-8.3 C (17.1 F)
1993
-10.0 C (14.0 F)
1994
-8.3 C (17.1 F)
1995
-6.1 C (21.0 F)
1996
-10.6 C (12.9 F)
1997
-6.1 C (21.0 F)
Wettest day (Rx1day)
The wettest day of the year at Tehachapi, 1893 to 1997. The record is 86.4 mm (3.4 in) in 1983, marked on the chart; the median year is 29.1 mm (1.1 in).
Wettest day (Rx1day) at Tehachapi by year
Year
Wettest day (Rx1day)
1893
24.9 mm (1.0 in)
1894
19.1 mm (0.8 in)
1906
24.1 mm (0.9 in)
1907
14.7 mm (0.6 in)
1908
25.4 mm (1.0 in)
1909
25.4 mm (1.0 in)
1910
19.1 mm (0.8 in)
1911
21.3 mm (0.8 in)
1912
33.0 mm (1.3 in)
1913
50.8 mm (2.0 in)
1914
22.1 mm (0.9 in)
1915
50.8 mm (2.0 in)
1916
31.8 mm (1.3 in)
1917
76.2 mm (3.0 in)
1918
43.2 mm (1.7 in)
1919
22.9 mm (0.9 in)
1926
33.0 mm (1.3 in)
1927
40.1 mm (1.6 in)
1928
24.1 mm (0.9 in)
1929
21.6 mm (0.9 in)
1930
44.2 mm (1.7 in)
1931
51.6 mm (2.0 in)
1932
66.0 mm (2.6 in)
1933
17.5 mm (0.7 in)
1934
24.6 mm (1.0 in)
1935
34.3 mm (1.4 in)
1936
26.4 mm (1.0 in)
1945
72.1 mm (2.8 in)
1946
42.9 mm (1.7 in)
1947
26.7 mm (1.1 in)
1948
16.5 mm (0.6 in)
1949
15.7 mm (0.6 in)
1950
16.5 mm (0.6 in)
1951
45.0 mm (1.8 in)
1952
48.0 mm (1.9 in)
1953
24.6 mm (1.0 in)
1954
45.2 mm (1.8 in)
1955
36.3 mm (1.4 in)
1956
28.4 mm (1.1 in)
1957
23.4 mm (0.9 in)
1958
36.1 mm (1.4 in)
1959
15.2 mm (0.6 in)
1960
27.2 mm (1.1 in)
1961
20.8 mm (0.8 in)
1962
35.6 mm (1.4 in)
1963
34.5 mm (1.4 in)
1964
55.6 mm (2.2 in)
1965
34.0 mm (1.3 in)
1966
37.1 mm (1.5 in)
1967
21.3 mm (0.8 in)
1968
27.7 mm (1.1 in)
1969
33.5 mm (1.3 in)
1970
83.6 mm (3.3 in)
1971
17.8 mm (0.7 in)
1972
30.5 mm (1.2 in)
1973
24.9 mm (1.0 in)
1974
40.6 mm (1.6 in)
1975
12.4 mm (0.5 in)
1976
29.2 mm (1.1 in)
1977
49.5 mm (1.9 in)
1978
81.8 mm (3.2 in)
1979
17.3 mm (0.7 in)
1980
23.1 mm (0.9 in)
1981
34.3 mm (1.4 in)
1982
50.0 mm (2.0 in)
1983
86.4 mm (3.4 in)
1984
28.2 mm (1.1 in)
1985
25.4 mm (1.0 in)
1986
29.0 mm (1.1 in)
1987
40.9 mm (1.6 in)
1988
22.1 mm (0.9 in)
1989
19.1 mm (0.8 in)
1990
22.4 mm (0.9 in)
1991
40.9 mm (1.6 in)
1992
47.8 mm (1.9 in)
1993
48.3 mm (1.9 in)
1994
18.0 mm (0.7 in)
1995
70.6 mm (2.8 in)
1996
33.0 mm (1.3 in)
1997
19.1 mm (0.8 in)
Wettest five days (Rx5day)
The wettest five days of the year at Tehachapi, 1893 to 1997. The record is 204.5 mm (8.1 in) in 1983, marked on the chart; the median year is 50.1 mm (2.0 in).
Wettest five days (Rx5day) at Tehachapi by year
Year
Wettest five days (Rx5day)
1893
53.8 mm (2.1 in)
1894
28.2 mm (1.1 in)
1906
51.3 mm (2.0 in)
1907
27.1 mm (1.1 in)
1908
25.4 mm (1.0 in)
1909
44.2 mm (1.7 in)
1910
21.1 mm (0.8 in)
1911
37.6 mm (1.5 in)
1912
43.1 mm (1.7 in)
1913
81.2 mm (3.2 in)
1914
25.2 mm (1.0 in)
1915
39.6 mm (1.6 in)
1916
17.1 mm (0.7 in)
1917
n/a
1918
47.0 mm (1.9 in)
1919
6.4 mm (0.25 in)
1926
80.6 mm (3.2 in)
1927
54.3 mm (2.1 in)
1928
48.0 mm (1.9 in)
1929
35.6 mm (1.4 in)
1930
51.1 mm (2.0 in)
1931
63.3 mm (2.5 in)
1932
180.6 mm (7.1 in)
1933
57.2 mm (2.3 in)
1934
52.2 mm (2.1 in)
1935
41.4 mm (1.6 in)
1936
59.7 mm (2.4 in)
1945
80.3 mm (3.2 in)
1946
54.9 mm (2.2 in)
1947
26.7 mm (1.1 in)
1948
28.6 mm (1.1 in)
1949
29.7 mm (1.2 in)
1950
27.9 mm (1.1 in)
1951
69.1 mm (2.7 in)
1952
76.2 mm (3.0 in)
1953
40.3 mm (1.6 in)
1954
51.3 mm (2.0 in)
1955
73.6 mm (2.9 in)
1956
69.8 mm (2.7 in)
1957
33.1 mm (1.3 in)
1958
50.1 mm (2.0 in)
1959
27.7 mm (1.1 in)
1960
51.3 mm (2.0 in)
1961
21.6 mm (0.9 in)
1962
93.5 mm (3.7 in)
1963
34.5 mm (1.4 in)
1964
98.3 mm (3.9 in)
1965
70.7 mm (2.8 in)
1966
80.5 mm (3.2 in)
1967
52.3 mm (2.1 in)
1968
33.3 mm (1.3 in)
1969
66.7 mm (2.6 in)
1970
145.6 mm (5.7 in)
1971
48.0 mm (1.9 in)
1972
73.5 mm (2.9 in)
1973
48.3 mm (1.9 in)
1974
47.2 mm (1.9 in)
1975
20.3 mm (0.8 in)
1976
46.5 mm (1.8 in)
1977
59.1 mm (2.3 in)
1978
136.7 mm (5.4 in)
1979
35.1 mm (1.4 in)
1980
47.0 mm (1.9 in)
1981
43.2 mm (1.7 in)
1982
80.2 mm (3.2 in)
1983
204.5 mm (8.1 in)
1984
59.4 mm (2.3 in)
1985
53.6 mm (2.1 in)
1986
44.9 mm (1.8 in)
1987
92.2 mm (3.6 in)
1988
40.9 mm (1.6 in)
1989
24.9 mm (1.0 in)
1990
25.7 mm (1.0 in)
1991
64.8 mm (2.6 in)
1992
74.5 mm (2.9 in)
1993
88.9 mm (3.5 in)
1994
34.0 mm (1.3 in)
1995
85.9 mm (3.4 in)
1996
66.6 mm (2.6 in)
1997
38.3 mm (1.5 in)
Longest dry spell (CDD)
The longest dry spell of the year at Tehachapi, 1893 to 1997. The record is 192 days in 1970, marked on the chart; the median year is 87 days.
Longest dry spell (CDD) at Tehachapi by year
Year
Longest dry spell (CDD)
1893
82 days
1894
34 days
1906
118 days
1907
61 days
1908
48 days
1909
60 days
1910
75 days
1911
58 days
1912
146 days
1913
40 days
1914
21 days
1915
2 days
1916
2 days
1917
1 day
1918
20 days
1919
19 days
1926
87 days
1927
96 days
1928
187 days
1929
73 days
1930
73 days
1931
48 days
1932
115 days
1933
126 days
1934
132 days
1935
115 days
1936
47 days
1945
39 days
1946
53 days
1947
138 days
1948
147 days
1949
141 days
1950
135 days
1951
163 days
1952
102 days
1953
99 days
1954
116 days
1955
189 days
1956
74 days
1957
122 days
1958
79 days
1959
97 days
1960
154 days
1961
87 days
1962
132 days
1963
56 days
1964
91 days
1965
95 days
1966
82 days
1967
90 days
1968
74 days
1969
95 days
1970
192 days
1971
87 days
1972
80 days
1973
75 days
1974
70 days
1975
123 days
1976
120 days
1977
79 days
1978
132 days
1979
96 days
1980
73 days
1981
125 days
1982
58 days
1983
95 days
1984
49 days
1985
76 days
1986
141 days
1987
80 days
1988
142 days
1989
124 days
1990
100 days
1991
87 days
1992
105 days
1993
126 days
1994
42 days
1995
71 days
1996
183 days
1997
72 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
54 years with a frost
Across 54 years with a frost, the median last spring frost at Tehachapi falls on 7 May and the median first autumn frost on 18 October, which leaves a median of 165 days between them.
Fitted over all years, the growing season changes by +6.5 days per decade at this station.
Frost dates and growing season at Tehachapi
Measure
Median, all years
Earliest period
Recent period (1962 to 1995)
Recent against earliest
Fitted trend
Last spring frost
7 May
n/a
7 May
n/a
-1.4 days per decade
First autumn frost
18 October
n/a
27 October
n/a
+5.1 days per decade
Growing days
165 days
n/a
173 days
n/a
+6.5 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
59 years, 1893 to 1996
A day with at least 31.7 mm (1.2 in) of rain is expected about once in 2 years. A day with at least 101.7 mm (4.0 in) of rain is expected about once in 100 years.
Rainfall return levels at Tehachapi: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
31.7 mm (1.2 in)
5 years
47.0 mm (1.9 in)
10 years
58.4 mm (2.3 in)
25 years
74.4 mm (2.9 in)
50 years
87.5 mm (3.4 in)
100 years
101.7 mm (4.0 in)
Longer than the 59 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, 59 years of values from 1893 to 1996.
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: 86.4 mm (3.4 in) in 1983; 83.6 mm (3.3 in) in 1970; 81.8 mm (3.2 in) in 1978.
Station Changes
1 suspected
One change was suspected in the annual mean temperature of Tehachapi, at 1987. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1987 ran 0.5 C (1.0 F) lower than in the years before (likely change).
Suspected changes in the annual mean temperature at Tehachapi, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1987
-0.5
-1.0
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 Tehachapi standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Tehachapi 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.