Kettleman STN Weather Records (USC00044536)

Record envelope, standing records and threshold days for Kettleman STN (USC00044536), California, United States, with 61 years of record.

Key Facts for Kettleman STN

Kettleman STN (USC00044536) is a weather station in California, United States at 36.07 latitude and -120.09 longitude, 155 m (508 ft) above sea level.
The station reports from 1941 to 2001, 61 years of record.
1,464 records set at Kettleman STN still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Kettleman STN set a daily record precipitation of 1.8 mm (0.07 in) on 6 July 2001.

About the Station

Location: California, United States, 36.07 latitude, -120.09 longitude.
Elevation: 155 m (508 ft).
Period of record: 1941 to 2001, 61 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Kettleman STN. 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 Kettleman STN, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	25.6 C (78.1 F)	-6.7 C (19.9 F)	n/a	n/a
Feb	26.7 C (80.1 F)	-2.8 C (27.0 F)	n/a	n/a
Mar	31.7 C (89.1 F)	-2.2 C (28.0 F)	n/a	n/a
Apr	37.2 C (99.0 F)	1.7 C (35.1 F)	n/a	n/a
May	41.1 C (106.0 F)	3.3 C (37.9 F)	n/a	n/a
Jun	46.7 C (116.1 F)	5.0 C (41.0 F)	n/a	n/a
Jul	46.1 C (115.0 F)	10.6 C (51.1 F)	n/a	n/a
Aug	44.4 C (111.9 F)	10.0 C (50.0 F)	n/a	n/a
Sep	43.9 C (111.0 F)	6.7 C (44.1 F)	n/a	n/a
Oct	40.0 C (104.0 F)	0.6 C (33.1 F)	n/a	n/a
Nov	32.8 C (91.0 F)	-1.7 C (28.9 F)	n/a	n/a
Dec	26.1 C (79.0 F)	-5.0 C (23.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Kettleman STN still stand. 1972 holds the most, with 61.

Standing records at Kettleman STN by the year they were set
Year set	Standing records
1941	40
1942	28
1943	24
1944	42
1945	43
1946	46
1947	48
1948	46
1949	56
1950	51
1951	26
1952	33
1953	28
1954	46
1955	46
1956	31
1957	30
1958	46
1959	52
1960	57
1961	48
1962	37
1963	34
1964	27
1965	25
1966	32
1967	47
1968	36
1969	14
1970	18
1971	29
1972	61
1973	27
1974	25
1975	38
1976	31
1977	34
1978	36
1979	23
1980	23

All-Time Record Progression

2 new records

2 all-time records were set at Kettleman STN between 10 February 1978 and 10 March 1995. Each dot is a new record.

When Kettleman STN set new all-time records
Date	Kind	Detail
1978-02-10	Record daily precipitation	Record daily precipitation 43.7 mm (1.7 in)
1995-03-10	Record daily precipitation	Record daily precipitation 68.8 mm (2.7 in)

Wettest Day of Each Month

Mar: 68.8 mm (2.7 in)

The wettest day on record for each calendar month at Kettleman STN. The most was 68.8 mm (2.7 in) on 10 March 1995.

Record daily precipitation for each month at Kettleman STN
Month	Record daily precipitation (mm)	Date
Jan	41.7 mm (1.6 in)	7 January 1974
Feb	43.7 mm (1.7 in)	10 February 1978
Mar	68.8 mm (2.7 in)	10 March 1995
Apr	23.9 mm (0.9 in)	1 April 1982
May	52.3 mm (2.1 in)	5 May 1998
Jun	18.3 mm (0.7 in)	7 June 1987
Jul	8.6 mm (0.34 in)	30 July 1966
Aug	19.8 mm (0.8 in)	22 August 1968
Sep	27.4 mm (1.1 in)	29 September 1983
Oct	62.5 mm (2.5 in)	29 October 1996
Nov	32.0 mm (1.3 in)	14 November 1953
Dec	42.7 mm (1.7 in)	24 December 1955

Period of Record Coverage

1941 to 1980

40 years of record at Kettleman STN, 1941 to 1980. 4 years have data for under 90 percent of days and are left out of rankings: 1941, 1953, 1970, 1980.

Days with data per year at Kettleman STN
Year	Days with data	Share of year	Complete
1941	305	84%	No
1942	365	100%	Yes
1943	362	99%	Yes
1944	366	100%	Yes
1945	365	100%	Yes
1946	364	100%	Yes
1947	365	100%	Yes
1948	364	99%	Yes
1949	365	100%	Yes
1950	363	99%	Yes
1951	361	99%	Yes
1952	348	95%	Yes
1953	312	85%	No
1954	360	99%	Yes
1955	354	97%	Yes
1956	357	98%	Yes
1957	361	99%	Yes
1958	360	99%	Yes
1959	363	99%	Yes
1960	362	99%	Yes
1961	359	98%	Yes
1962	360	99%	Yes
1963	364	100%	Yes
1964	360	98%	Yes
1965	354	97%	Yes
1966	361	99%	Yes
1967	359	98%	Yes
1968	361	99%	Yes
1969	332	91%	Yes
1970	327	90%	No
1971	363	99%	Yes
1972	361	99%	Yes
1973	363	99%	Yes
1974	332	91%	Yes
1975	364	100%	Yes
1976	363	99%	Yes
1977	361	99%	Yes
1978	359	98%	Yes
1979	363	99%	Yes
1980	234	64%	No

Latest Records

Latest records at Kettleman STN
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
6 July 2001	Kettleman STN, US	daily rain	1.8 mm (0.07 in)	1.8 mm (0.07 in)	60 years	20 of 100 (Routine)
5 March 2001	Kettleman STN, US	daily rain	30.0 mm (1.2 in)	4.6 mm (0.18 in)	14 years	16 of 100 (Routine)
26 February 2001	Kettleman STN, US	daily rain	13.5 mm (0.5 in)	6.1 mm (0.24 in)	8 years	16 of 100 (Routine)
11 January 2001	Kettleman STN, US	daily rain	16.3 mm (0.6 in)	3.3 mm (0.13 in)	51 years	20 of 100 (Routine)
12 October 2000	Kettleman STN, US	daily rain	3.8 mm (0.15 in)	3.8 mm (0.15 in)	59 years	20 of 100 (Routine)
8 June 2000	Kettleman STN, US	daily rain	8.9 mm (0.35 in)	8.9 mm (0.35 in)	59 years	20 of 100 (Routine)
17 April 2000	Kettleman STN, US	daily rain	19.1 mm (0.8 in)	1.3 mm (0.05 in)	25 years	15 of 100 (Routine)
22 September 1999	Kettleman STN, US	daily rain	0.5 mm (0.02 in)	0.5 mm (0.02 in)	57 years	20 of 100 (Routine)
6 April 1999	Kettleman STN, US	daily rain	15.7 mm (0.6 in)	7.1 mm (0.28 in)	40 years	20 of 100 (Routine)
24 October 1998	Kettleman STN, US	daily rain	8.1 mm (0.32 in)	8.1 mm (0.32 in)	56 years	20 of 100 (Routine)
9 September 1998	Kettleman STN, US	daily rain	0.8 mm (0.03 in)	0.8 mm (0.03 in)	56 years	20 of 100 (Routine)
6 June 1998	Kettleman STN, US	daily rain	12.4 mm (0.5 in)	11.6 mm (0.5 in)	11 years	19 of 100 (Routine)
25 May 1998	Kettleman STN, US	daily rain	0.8 mm (0.03 in)	0.3 mm (0.01 in)	52 years	20 of 100 (Routine)
5 May 1998	Kettleman STN, US	monthly rain	52.3 mm (2.1 in)	15.5 mm (0.6 in)	39 years	49 of 100 (Notable)
4 May 1998	Kettleman STN, US	daily rain	13.0 mm (0.5 in)	12.7 mm (0.5 in)	33 years	20 of 100 (Routine)
3 May 1998	Kettleman STN, US	daily rain	7.4 mm (0.29 in)	7.4 mm (0.29 in)	56 years	20 of 100 (Routine)
2 May 1998	Kettleman STN, US	daily rain	17.0 mm (0.7 in)	16.0 mm (0.6 in)	27 years	20 of 100 (Routine)
7 February 1998	Kettleman STN, US	daily rain	18.3 mm (0.7 in)	5.9 mm (0.23 in)	20 years	19 of 100 (Routine)
6 February 1998	Kettleman STN, US	daily rain	19.3 mm (0.8 in)	6.9 mm (0.27 in)	28 years	20 of 100 (Routine)
3 February 1998	Kettleman STN, US	daily rain	30.2 mm (1.2 in)	24.9 mm (1.0 in)	54 years	55 of 100 (Notable)

Climate Trend

31 complete years, 1942 to 1979

One stripe for each of 31 complete years at Kettleman STN, 1942 to 1979. Blue stripes are years cooler than the station's own mean of 18.4 C (65.1 F); red stripes are warmer. The coolest year was 1948, at 17.1 C (62.8 F), and the warmest was 1959, at 20.2 C (68.4 F). The strongest colour marks a difference of 1.9 C (3.4 F).

Annual mean temperature at Kettleman STN as warming stripes, 1942 to 1979
Year	Annual mean temperature	Difference from the station mean
1942	17.9 C	-0.46 C
1943	18.1 C	-0.30 C
1944	17.7 C	-0.67 C
1945	17.9 C	-0.44 C
1946	17.2 C	-1.18 C
1948	17.1 C	-1.26 C
1949	17.4 C	-0.93 C
1951	18.7 C	+0.34 C
1952	18.4 C	+0.03 C
1954	18.3 C	-0.07 C
1955	18.2 C	-0.14 C
1956	18.3 C	-0.11 C
1958	20.0 C	+1.63 C
1959	20.2 C	+1.87 C
1960	19.7 C	+1.36 C
1961	19.3 C	+0.97 C
1962	18.5 C	+0.17 C
1963	17.8 C	-0.53 C
1964	18.3 C	-0.08 C
1965	18.1 C	-0.27 C
1966	19.0 C	+0.63 C
1967	18.7 C	+0.31 C
1968	18.8 C	+0.38 C
1971	17.8 C	-0.57 C
1972	18.2 C	-0.13 C
1973	18.4 C	+0.07 C
1975	17.5 C	-0.85 C
1976	18.2 C	-0.14 C
1977	18.8 C	+0.43 C
1978	18.2 C	-0.18 C
1979	18.4 C	+0.01 C

The fitted trend in annual mean temperature here over 1942 to 1979 is 0.1 C (-0.1 to 0.4) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.3 F (-0.2 to 0.7) per decade. The slope is a straight line fitted to 31 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Kettleman STN
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.1 C (-0.1 to 0.4) per decade	0.3 F (-0.2 to 0.7) per decade	1942 to 1979	31	Not clearly different from zero
Mean daily maximum	0.1 C (-0.2 to 0.4) per decade	0.2 F (-0.3 to 0.7) per decade	1942 to 1979	31	Not clearly different from zero
Mean daily minimum	0.2 C (-0.1 to 0.4) per decade	0.3 F (-0.1 to 0.7) per decade	1942 to 1979	31	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

1941 to 2001

Yearly extremes at Kettleman STN: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	46.7 C (116.1 F)	1961	42.5 C (108.5 F)	40
Coldest night (TNn)	-6.7 C (19.9 F)	1961	-2.8 C (27.0 F)	40
Wettest day (Rx1day)	68.8 mm (2.7 in)	1995	23.9 mm (0.9 in)	61
Wettest five days (Rx5day)	93.2 mm (3.7 in)	1978	37.4 mm (1.5 in)	61
Longest dry spell (CDD)	254 days	1972	151 days	61

Hottest day (TXx)

The hottest day of the year at Kettleman STN, 1941 to 2001. The record is 46.7 C (116.1 F) in 1961, marked on the chart; the median year is 42.5 C (108.5 F).

Hottest day (TXx) at Kettleman STN by year
Year	Hottest day (TXx)
1941	42.8 C (109.0 F)
1942	43.9 C (111.0 F)
1943	42.2 C (108.0 F)
1944	41.7 C (107.1 F)
1945	42.8 C (109.0 F)
1946	43.3 C (109.9 F)
1947	42.2 C (108.0 F)
1948	42.8 C (109.0 F)
1949	42.2 C (108.0 F)
1950	45.0 C (113.0 F)
1951	42.2 C (108.0 F)
1952	41.1 C (106.0 F)
1953	42.2 C (108.0 F)
1954	43.3 C (109.9 F)
1955	43.9 C (111.0 F)
1956	42.2 C (108.0 F)
1957	45.0 C (113.0 F)
1958	42.2 C (108.0 F)
1959	45.0 C (113.0 F)
1960	46.1 C (115.0 F)
1961	46.7 C (116.1 F)
1962	42.2 C (108.0 F)
1963	41.1 C (106.0 F)
1964	43.3 C (109.9 F)
1965	41.1 C (106.0 F)
1966	43.3 C (109.9 F)
1967	42.8 C (109.0 F)
1968	41.7 C (107.1 F)
1969	41.1 C (106.0 F)
1970	42.2 C (108.0 F)
1971	42.8 C (109.0 F)
1972	44.4 C (111.9 F)
1973	43.3 C (109.9 F)
1974	41.1 C (106.0 F)
1975	42.2 C (108.0 F)
1976	42.8 C (109.0 F)
1977	43.3 C (109.9 F)
1978	42.2 C (108.0 F)
1979	42.2 C (108.0 F)
1980	41.7 C (107.1 F)
1981	n/a
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	n/a
1993	n/a
1994	n/a
1995	n/a
1996	n/a
1997	n/a
1998	n/a
1999	n/a
2000	n/a
2001	n/a

Coldest night (TNn)

The coldest night of the year at Kettleman STN, 1941 to 2001. The record is -6.7 C (19.9 F) in 1961, marked on the chart; the median year is -2.8 C (27.0 F).

Coldest night (TNn) at Kettleman STN by year
Year	Coldest night (TNn)
1941	0.6 C (33.1 F)
1942	-2.8 C (27.0 F)
1943	-2.2 C (28.0 F)
1944	0.0 C (32.0 F)
1945	-2.2 C (28.0 F)
1946	-2.8 C (27.0 F)
1947	-2.8 C (27.0 F)
1948	-2.2 C (28.0 F)
1949	-5.0 C (23.0 F)
1950	-5.6 C (21.9 F)
1951	-2.2 C (28.0 F)
1952	-4.4 C (24.1 F)
1953	-2.2 C (28.0 F)
1954	-1.7 C (28.9 F)
1955	-3.9 C (25.0 F)
1956	-2.8 C (27.0 F)
1957	-3.3 C (26.1 F)
1958	-1.1 C (30.0 F)
1959	-0.6 C (30.9 F)
1960	-2.2 C (28.0 F)
1961	-6.7 C (19.9 F)
1962	-3.9 C (25.0 F)
1963	-5.0 C (23.0 F)
1964	-2.8 C (27.0 F)
1965	-2.8 C (27.0 F)
1966	-2.2 C (28.0 F)
1967	-3.3 C (26.1 F)
1968	-4.4 C (24.1 F)
1969	-2.2 C (28.0 F)
1970	-2.2 C (28.0 F)
1971	-3.3 C (26.1 F)
1972	-5.0 C (23.0 F)
1973	-3.3 C (26.1 F)
1974	-3.3 C (26.1 F)
1975	-4.4 C (24.1 F)
1976	-3.3 C (26.1 F)
1977	-1.7 C (28.9 F)
1978	-5.0 C (23.0 F)
1979	-3.3 C (26.1 F)
1980	3.3 C (37.9 F)
1981	n/a
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	n/a
1993	n/a
1994	n/a
1995	n/a
1996	n/a
1997	n/a
1998	n/a
1999	n/a
2000	n/a
2001	n/a

Wettest day (Rx1day)

The wettest day of the year at Kettleman STN, 1941 to 2001. The record is 68.8 mm (2.7 in) in 1995, marked on the chart; the median year is 23.9 mm (0.9 in).

Wettest day (Rx1day) at Kettleman STN by year
Year	Wettest day (Rx1day)
1941	21.1 mm (0.8 in)
1942	15.2 mm (0.6 in)
1943	20.6 mm (0.8 in)
1944	36.3 mm (1.4 in)
1945	14.5 mm (0.6 in)
1946	21.3 mm (0.8 in)
1947	6.9 mm (0.27 in)
1948	16.0 mm (0.6 in)
1949	20.1 mm (0.8 in)
1950	13.2 mm (0.5 in)
1951	14.0 mm (0.6 in)
1952	41.7 mm (1.6 in)
1953	32.0 mm (1.3 in)
1954	25.4 mm (1.0 in)
1955	42.7 mm (1.7 in)
1956	32.0 mm (1.3 in)
1957	23.9 mm (0.9 in)
1958	36.8 mm (1.4 in)
1959	18.3 mm (0.7 in)
1960	24.9 mm (1.0 in)
1961	25.7 mm (1.0 in)
1962	27.7 mm (1.1 in)
1963	26.2 mm (1.0 in)
1964	25.1 mm (1.0 in)
1965	26.4 mm (1.0 in)
1966	15.2 mm (0.6 in)
1967	24.1 mm (0.9 in)
1968	19.8 mm (0.8 in)
1969	36.6 mm (1.4 in)
1970	20.3 mm (0.8 in)
1971	19.6 mm (0.8 in)
1972	16.5 mm (0.6 in)
1973	34.8 mm (1.4 in)
1974	41.7 mm (1.6 in)
1975	17.8 mm (0.7 in)
1976	22.1 mm (0.9 in)
1977	30.0 mm (1.2 in)
1978	43.7 mm (1.7 in)
1979	17.8 mm (0.7 in)
1980	11.4 mm (0.4 in)
1981	12.2 mm (0.5 in)
1982	23.9 mm (0.9 in)
1983	36.3 mm (1.4 in)
1984	21.3 mm (0.8 in)
1985	24.9 mm (1.0 in)
1986	18.0 mm (0.7 in)
1987	25.4 mm (1.0 in)
1988	37.6 mm (1.5 in)
1989	20.1 mm (0.8 in)
1990	16.8 mm (0.7 in)
1991	36.8 mm (1.4 in)
1992	29.7 mm (1.2 in)
1993	27.2 mm (1.1 in)
1994	23.4 mm (0.9 in)
1995	68.8 mm (2.7 in)
1996	62.5 mm (2.5 in)
1997	16.0 mm (0.6 in)
1998	52.3 mm (2.1 in)
1999	19.8 mm (0.8 in)
2000	19.1 mm (0.8 in)
2001	30.0 mm (1.2 in)

Wettest five days (Rx5day)

The wettest five days of the year at Kettleman STN, 1941 to 2001. The record is 93.2 mm (3.7 in) in 1978, marked on the chart; the median year is 37.4 mm (1.5 in).

Wettest five days (Rx5day) at Kettleman STN by year
Year	Wettest five days (Rx5day)
1941	48.0 mm (1.9 in)
1942	22.7 mm (0.9 in)
1943	47.3 mm (1.9 in)
1944	76.4 mm (3.0 in)
1945	27.5 mm (1.1 in)
1946	38.4 mm (1.5 in)
1947	8.1 mm (0.32 in)
1948	19.5 mm (0.8 in)
1949	23.4 mm (0.9 in)
1950	24.4 mm (1.0 in)
1951	20.6 mm (0.8 in)
1952	46.9 mm (1.8 in)
1953	32.0 mm (1.3 in)
1954	36.1 mm (1.4 in)
1955	59.9 mm (2.4 in)
1956	34.6 mm (1.4 in)
1957	25.4 mm (1.0 in)
1958	39.4 mm (1.6 in)
1959	37.4 mm (1.5 in)
1960	32.3 mm (1.3 in)
1961	36.8 mm (1.4 in)
1962	77.8 mm (3.1 in)
1963	46.8 mm (1.8 in)
1964	29.2 mm (1.1 in)
1965	50.6 mm (2.0 in)
1966	38.6 mm (1.5 in)
1967	42.2 mm (1.7 in)
1968	26.1 mm (1.0 in)
1969	69.0 mm (2.7 in)
1970	45.0 mm (1.8 in)
1971	22.4 mm (0.9 in)
1972	32.8 mm (1.3 in)
1973	61.7 mm (2.4 in)
1974	85.4 mm (3.4 in)
1975	30.5 mm (1.2 in)
1976	44.2 mm (1.7 in)
1977	52.3 mm (2.1 in)
1978	93.2 mm (3.7 in)
1979	25.1 mm (1.0 in)
1980	23.4 mm (0.9 in)
1981	26.4 mm (1.0 in)
1982	31.5 mm (1.2 in)
1983	66.3 mm (2.6 in)
1984	29.0 mm (1.1 in)
1985	29.0 mm (1.1 in)
1986	43.9 mm (1.7 in)
1987	39.1 mm (1.5 in)
1988	45.5 mm (1.8 in)
1989	20.1 mm (0.8 in)
1990	19.3 mm (0.8 in)
1991	92.7 mm (3.6 in)
1992	91.6 mm (3.6 in)
1993	62.6 mm (2.5 in)
1994	28.8 mm (1.1 in)
1995	93.2 mm (3.7 in)
1996	67.6 mm (2.7 in)
1997	25.2 mm (1.0 in)
1998	90.2 mm (3.6 in)
1999	44.5 mm (1.8 in)
2000	24.2 mm (1.0 in)
2001	35.3 mm (1.4 in)

Longest dry spell (CDD)

The longest dry spell of the year at Kettleman STN, 1941 to 2001. The record is 254 days in 1972, marked on the chart; the median year is 151 days.

Longest dry spell (CDD) at Kettleman STN by year
Year	Longest dry spell (CDD)
1941	115 days
1942	30 days
1943	253 days
1944	145 days
1945	197 days
1946	126 days
1947	171 days
1948	187 days
1949	151 days
1950	160 days
1951	171 days
1952	149 days
1953	154 days
1954	194 days
1955	189 days
1956	147 days
1957	122 days
1958	96 days
1959	213 days
1960	190 days
1961	157 days
1962	207 days
1963	71 days
1964	151 days
1965	110 days
1966	98 days
1967	192 days
1968	141 days
1969	154 days
1970	95 days
1971	168 days
1972	254 days
1973	199 days
1974	180 days
1975	164 days
1976	127 days
1977	169 days
1978	131 days
1979	114 days
1980	168 days
1981	96 days
1982	172 days
1983	104 days
1984	208 days
1985	74 days
1986	191 days
1987	115 days
1988	189 days
1989	130 days
1990	117 days
1991	188 days
1992	203 days
1993	127 days
1994	133 days
1995	101 days
1996	191 days
1997	123 days
1998	89 days
1999	221 days
2000	125 days
2001	86 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

26 years with a frost

Across 26 years with a frost, the median last spring frost at Kettleman STN falls on 31 January and the median first autumn frost on 11 December, which leaves a median of 312 days between them.

Fitted over all years, the growing season changes by +1.9 days per decade at this station.

Frost dates and growing season at Kettleman STN
Measure	Median, all years	Earliest period	Recent period (1942 to 1979)	Recent against earliest	Fitted trend
Last spring frost	31 January	n/a	31 January	n/a	-6.3 days per decade
First autumn frost	11 December	n/a	11 December	n/a	-4.5 days per decade
Growing days	312 days	n/a	312 days	n/a	+1.9 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

53 years, 1941 to 2000

A day with at least 24.3 mm (1.0 in) of rain is expected about once in 2 years. A day with at least 72.4 mm (2.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Kettleman STN: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	24.3 mm (1.0 in)
5 years	34.4 mm (1.4 in)
10 years	42.1 mm (1.7 in)
25 years	53.1 mm (2.1 in)
50 years	62.3 mm (2.5 in)
100 years	72.4 mm (2.9 in)	Longer than the 53 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, 53 years of values from 1941 to 2000.

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: 68.8 mm (2.7 in) in 1995; 62.5 mm (2.5 in) in 1996; 52.3 mm (2.1 in) in 1998.

Download the Data

Data for Kettleman STN standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Kettleman STN 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.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).