Ceballos Weather Records (MXN00010005)

Record envelope, standing records and threshold days for Ceballos (MXN00010005), Mexico, with 54 years of record.

Key Facts for Ceballos

Ceballos (MXN00010005) is a weather station in Mexico at 26.32 latitude and -104.35 longitude, 1,188 m (3,897 ft) above sea level.
The station reports from 1956 to 2009, 54 years of record.
1,464 records set at Ceballos still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Ceballos tied a monthly record low minimum temperature of -2.2 C (28.0 F) on 30 October 2009.

About the Station

Location: Mexico, 26.32 latitude, -104.35 longitude.
Elevation: 1,188 m (3,897 ft).
Period of record: 1956 to 2009, 54 years.
Eligible elements: tmax, tmin, prcp.

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 Ceballos. 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 Ceballos, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	35.0 C (95.0 F)	-15.6 C (3.9 F)	n/a	n/a
Feb	35.6 C (96.1 F)	-9.4 C (15.1 F)	n/a	n/a
Mar	38.9 C (102.0 F)	-7.2 C (19.0 F)	n/a	n/a
Apr	41.7 C (107.1 F)	-4.4 C (24.1 F)	n/a	n/a
May	43.3 C (109.9 F)	3.9 C (39.0 F)	n/a	n/a
Jun	43.9 C (111.0 F)	10.0 C (50.0 F)	n/a	n/a
Jul	42.8 C (109.0 F)	8.9 C (48.0 F)	n/a	n/a
Aug	43.3 C (109.9 F)	10.0 C (50.0 F)	n/a	n/a
Sep	40.0 C (104.0 F)	6.1 C (43.0 F)	n/a	n/a
Oct	38.9 C (102.0 F)	-2.2 C (28.0 F)	n/a	n/a
Nov	35.6 C (96.1 F)	-8.9 C (16.0 F)	n/a	n/a
Dec	36.7 C (98.1 F)	-11.1 C (12.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Ceballos still stand. 1988 holds the most, with 82.

Standing records at Ceballos by the year they were set
Year set	Standing records
1956	18
1957	42
1958	42
1959	32
1960	26
1961	27
1962	30
1963	26
1964	36
1965	26
1966	30
1967	31
1968	29
1969	23
1970	41
1971	31
1972	17
1973	46
1974	27
1975	15
1976	38
1977	35
1978	38
1979	43
1980	54
1981	21
1982	47
1983	55
1984	27
1985	19
1986	6
1987	10
1988	82
1990	15
1991	34
1992	37
1993	22
1994	27
1995	36
1996	26
1997	32
1998	17
1999	25
2000	23
2001	7
2002	14
2003	21
2004	22
2005	6
2006	5
2007	10
2008	10
2009	5

All-Time Record Progression

1 new records

1 all-time records were set at Ceballos between 1 August 1995 and 1 August 1995. Each dot is a new record.

Wettest Day of Each Month

Jun: 95.8 mm (3.8 in)

The wettest day on record for each calendar month at Ceballos. The most was 95.8 mm (3.8 in) on 9 June 1979.

Record daily precipitation for each month at Ceballos
Month	Record daily precipitation (mm)	Date
Jan	30.0 mm (1.2 in)	29 January 1984
Feb	14.0 mm (0.6 in)	20 February 1973
Mar	42.9 mm (1.7 in)	21 March 2004
Apr	45.0 mm (1.8 in)	11 April 1968
May	53.8 mm (2.1 in)	5 May 1957
Jun	95.8 mm (3.8 in)	9 June 1979
Jul	63.0 mm (2.5 in)	30 July 2009
Aug	77.0 mm (3.0 in)	15 August 1971
Sep	91.4 mm (3.6 in)	26 September 1970
Oct	50.8 mm (2.0 in)	7 October 1971
Nov	19.8 mm (0.8 in)	19 November 2001
Dec	19.8 mm (0.8 in)	16 December 1991

Period of Record Coverage

1956 to 2009

53 years of record at Ceballos, 1956 to 2009. 10 years have data for under 90 percent of days and are left out of rankings: 1956, 1969, 1973, 1975, 1986, 1987, 1988, 1990 and others.

Days with data per year at Ceballos
Year	Days with data	Share of year	Complete
1956	312	85%	No
1957	363	99%	Yes
1958	365	100%	Yes
1959	364	100%	Yes
1960	365	100%	Yes
1961	364	100%	Yes
1962	364	100%	Yes
1963	365	100%	Yes
1964	366	100%	Yes
1965	362	99%	Yes
1966	365	100%	Yes
1967	362	99%	Yes
1968	366	100%	Yes
1969	305	84%	No
1970	364	100%	Yes
1971	363	99%	Yes
1972	364	99%	Yes
1973	304	83%	No
1974	365	100%	Yes
1975	274	75%	No
1976	366	100%	Yes
1977	365	100%	Yes
1978	365	100%	Yes
1979	365	100%	Yes
1980	365	100%	Yes
1981	365	100%	Yes
1982	364	100%	Yes
1983	365	100%	Yes
1984	366	100%	Yes
1985	365	100%	Yes
1986	150	41%	No
1987	123	34%	No
1988	214	58%	No
1990	115	32%	No
1991	333	91%	Yes
1992	365	100%	Yes
1993	364	100%	Yes
1994	304	83%	No
1995	365	100%	Yes
1996	334	91%	Yes
1997	365	100%	Yes
1998	334	92%	Yes
1999	365	100%	Yes
2000	366	100%	Yes
2001	334	92%	Yes
2002	365	100%	Yes
2003	365	100%	Yes
2004	365	100%	Yes
2005	360	99%	Yes
2006	358	98%	Yes
2007	359	98%	Yes
2008	362	99%	Yes
2009	303	83%	No

Latest Records

Latest records at Ceballos
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 October 2009	Ceballos, MX	monthly low min (Tie)	-2.2 C (28.0 F)	tie	41 years	6 of 100 (Routine)
22 October 2009	Ceballos, MX	daily high min (Tie)	15.0 C (59.0 F)	tie	34 years	3 of 100 (Routine)
9 October 2009	Ceballos, MX	daily high min (Tie)	17.8 C (64.0 F)	tie	3 years	1 of 100 (Routine)
5 October 2009	Ceballos, MX	daily high min (Tie)	18.9 C (66.0 F)	tie	15 years	2 of 100 (Routine)
3 September 2009	Ceballos, MX	daily rain	36.8 mm (1.4 in)	9.9 mm (0.39 in)	28 years	20 of 100 (Routine)
23 August 2009	Ceballos, MX	daily low max (Tie)	30.0 C (86.0 F)	tie	39 years	4 of 100 (Routine)
20 August 2009	Ceballos, MX	daily rain	23.4 mm (0.9 in)	15.5 mm (0.6 in)	14 years	20 of 100 (Routine)
10 August 2009	Ceballos, MX	daily rain	21.3 mm (0.8 in)	4.5 mm (0.18 in)	34 years	19 of 100 (Routine)
31 July 2009	Ceballos, MX	daily low max	28.9 C (84.0 F)	1.7 C (3.1 F)	12 years	14 of 100 (Routine)
30 July 2009	Ceballos, MX	monthly rain	63.0 mm (2.5 in)	2.0 mm (0.08 in)	37 years	28 of 100 (Routine)
24 May 2009	Ceballos, MX	daily low max (Tie)	31.7 C (89.1 F)	tie	12 years	2 of 100 (Routine)
22 May 2009	Ceballos, MX	daily low max (Tie)	28.9 C (84.0 F)	tie	12 years	2 of 100 (Routine)
25 March 2009	Ceballos, MX	daily high max (Tie)	35.0 C (95.0 F)	tie	27 years	3 of 100 (Routine)
18 March 2009	Ceballos, MX	monthly high max (Tie)	38.9 C (102.0 F)	tie	26 years	5 of 100 (Routine)
28 February 2009	Ceballos, MX	daily high max	33.9 C (93.0 F)	2.2 C (4.0 F)	2 years	9 of 100 (Routine)
27 February 2009	Ceballos, MX	daily high max	33.9 C (93.0 F)	1.1 C (2.0 F)	53 years	22 of 100 (Routine)
4 February 2009	Ceballos, MX	daily low min (Tie)	-4.4 C (24.1 F)	tie	39 years	4 of 100 (Routine)
15 October 2008	Ceballos, MX	daily rain	6.9 mm (0.27 in)	1.1 mm (0.04 in)	32 years	15 of 100 (Routine)
13 October 2008	Ceballos, MX	daily rain	29.5 mm (1.2 in)	23.1 mm (0.9 in)	49 years	45 of 100 (Notable)
3 October 2008	Ceballos, MX	daily low min (Tie)	6.7 C (44.1 F)	tie	43 years	4 of 100 (Routine)

Climate Trend

39 complete years, 1957 to 2008

One stripe for each of 39 complete years at Ceballos, 1957 to 2008. Blue stripes are years cooler than the station's own mean of 19.9 C (67.9 F); red stripes are warmer. The coolest year was 1999, at 18.4 C (65.2 F), and the warmest was 1985, at 21.4 C (70.6 F). The strongest colour marks a difference of 1.6 C (2.9 F).

Annual mean temperature at Ceballos as warming stripes, 1957 to 2008
Year	Annual mean temperature	Difference from the station mean
1957	20.1 C	+0.15 C
1958	19.8 C	-0.17 C
1959	20.1 C	+0.22 C
1960	20.0 C	+0.06 C
1961	19.6 C	-0.32 C
1962	20.6 C	+0.65 C
1963	20.5 C	+0.59 C
1964	19.7 C	-0.27 C
1965	20.2 C	+0.24 C
1966	19.7 C	-0.25 C
1967	20.5 C	+0.59 C
1968	19.6 C	-0.35 C
1970	19.8 C	-0.16 C
1971	20.0 C	+0.08 C
1972	20.3 C	+0.34 C
1974	20.0 C	+0.10 C
1976	18.9 C	-0.98 C
1977	20.3 C	+0.41 C
1978	20.1 C	+0.20 C
1979	19.6 C	-0.30 C
1980	21.1 C	+1.20 C
1981	20.6 C	+0.66 C
1982	21.0 C	+1.07 C
1983	21.1 C	+1.17 C
1984	21.4 C	+1.44 C
1985	21.4 C	+1.51 C
1992	20.0 C	+0.09 C
1993	20.6 C	+0.72 C
1995	20.6 C	+0.69 C
1997	19.2 C	-0.73 C
1999	18.4 C	-1.49 C
2000	18.5 C	-1.39 C
2002	19.1 C	-0.80 C
2003	19.2 C	-0.69 C
2004	18.5 C	-1.43 C
2005	20.0 C	+0.08 C
2006	19.9 C	-0.01 C
2007	18.6 C	-1.30 C
2008	18.4 C	-1.48 C

The annual mean temperature here has fallen by 0.19 C (0.04 to 0.34) per decade over 1957 to 2008. In Fahrenheit: 0.3 F (0.1 to 0.6) per decade. The slope is a straight line fitted to 39 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Ceballos
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	-0.19 C (-0.34 to -0.04) per decade	-0.3 F (-0.6 to -0.1) per decade	1957 to 2008	39	Fall
Mean daily maximum	-0.26 C (-0.47 to -0.04) per decade	-0.5 F (-0.8 to -0.1) per decade	1957 to 2008	39	Fall
Mean daily minimum	-0.12 C (-0.28 to 0.04) per decade	-0.2 F (-0.5 to 0.1) per decade	1957 to 2008	39	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

1956 to 2009

Yearly extremes at Ceballos: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	43.9 C (111.0 F)	1960	40.6 C (105.1 F)	53
Coldest night (TNn)	-15.6 C (3.9 F)	1962	-7.2 C (19.0 F)	53
Wettest day (Rx1day)	95.8 mm (3.8 in)	1979	33.8 mm (1.3 in)	53
Wettest five days (Rx5day)	135.5 mm (5.3 in)	1961	53.4 mm (2.1 in)	53
Longest dry spell (CDD)	184 days	1998	76 days	53

Hottest day (TXx)

The hottest day of the year at Ceballos, 1956 to 2009. The record is 43.9 C (111.0 F) in 1960, marked on the chart; the median year is 40.6 C (105.1 F).

Hottest day (TXx) at Ceballos by year
Year	Hottest day (TXx)
1956	41.1 C (106.0 F)
1957	42.2 C (108.0 F)
1958	40.6 C (105.1 F)
1959	41.1 C (106.0 F)
1960	43.9 C (111.0 F)
1961	40.0 C (104.0 F)
1962	41.7 C (107.1 F)
1963	41.1 C (106.0 F)
1964	40.6 C (105.1 F)
1965	40.0 C (104.0 F)
1966	41.1 C (106.0 F)
1967	41.1 C (106.0 F)
1968	41.1 C (106.0 F)
1969	42.8 C (109.0 F)
1970	40.6 C (105.1 F)
1971	40.0 C (104.0 F)
1972	41.7 C (107.1 F)
1973	41.1 C (106.0 F)
1974	41.7 C (107.1 F)
1975	38.9 C (102.0 F)
1976	41.7 C (107.1 F)
1977	40.6 C (105.1 F)
1978	41.7 C (107.1 F)
1979	40.6 C (105.1 F)
1980	43.9 C (111.0 F)
1981	42.8 C (109.0 F)
1982	43.3 C (109.9 F)
1983	41.7 C (107.1 F)
1984	43.9 C (111.0 F)
1985	40.0 C (104.0 F)
1986	37.8 C (100.0 F)
1987	40.0 C (104.0 F)
1988	40.6 C (105.1 F)
1990	31.7 C (89.1 F)
1991	41.7 C (107.1 F)
1992	42.8 C (109.0 F)
1993	41.7 C (107.1 F)
1994	41.7 C (107.1 F)
1995	40.6 C (105.1 F)
1996	41.7 C (107.1 F)
1997	40.0 C (104.0 F)
1998	42.8 C (109.0 F)
1999	36.7 C (98.1 F)
2000	37.8 C (100.0 F)
2001	40.0 C (104.0 F)
2002	38.9 C (102.0 F)
2003	40.0 C (104.0 F)
2004	40.6 C (105.1 F)
2005	40.6 C (105.1 F)
2006	38.9 C (102.0 F)
2007	37.8 C (100.0 F)
2008	38.9 C (102.0 F)
2009	40.0 C (104.0 F)

Coldest night (TNn)

The coldest night of the year at Ceballos, 1956 to 2009. The record is -15.6 C (3.9 F) in 1962, marked on the chart; the median year is -7.2 C (19.0 F).

Coldest night (TNn) at Ceballos by year
Year	Coldest night (TNn)
1956	-6.1 C (21.0 F)
1957	-7.2 C (19.0 F)
1958	-6.7 C (19.9 F)
1959	-6.7 C (19.9 F)
1960	-7.2 C (19.0 F)
1961	-6.7 C (19.9 F)
1962	-15.6 C (3.9 F)
1963	-10.0 C (14.0 F)
1964	-10.0 C (14.0 F)
1965	-8.9 C (16.0 F)
1966	-7.2 C (19.0 F)
1967	-8.3 C (17.1 F)
1968	-5.6 C (21.9 F)
1969	-5.0 C (23.0 F)
1970	-8.3 C (17.1 F)
1971	-6.1 C (21.0 F)
1972	-5.0 C (23.0 F)
1973	-11.1 C (12.0 F)
1974	-7.2 C (19.0 F)
1975	-10.0 C (14.0 F)
1976	-9.4 C (15.1 F)
1977	-6.1 C (21.0 F)
1978	-9.4 C (15.1 F)
1979	-8.9 C (16.0 F)
1980	-4.4 C (24.1 F)
1981	-4.4 C (24.1 F)
1982	-6.1 C (21.0 F)
1983	-10.0 C (14.0 F)
1984	-5.0 C (23.0 F)
1985	-7.2 C (19.0 F)
1986	-4.4 C (24.1 F)
1987	5.0 C (41.0 F)
1988	5.0 C (41.0 F)
1990	0.0 C (32.0 F)
1991	0.0 C (32.0 F)
1992	-8.3 C (17.1 F)
1993	-2.2 C (28.0 F)
1994	-8.3 C (17.1 F)
1995	0.0 C (32.0 F)
1996	-8.3 C (17.1 F)
1997	-8.3 C (17.1 F)
1998	-6.1 C (21.0 F)
1999	-7.2 C (19.0 F)
2000	-7.2 C (19.0 F)
2001	-8.3 C (17.1 F)
2002	-7.2 C (19.0 F)
2003	-7.2 C (19.0 F)
2004	-7.2 C (19.0 F)
2005	-3.3 C (26.1 F)
2006	-7.2 C (19.0 F)
2007	-6.1 C (21.0 F)
2008	-7.2 C (19.0 F)
2009	-5.0 C (23.0 F)

Wettest day (Rx1day)

The wettest day of the year at Ceballos, 1956 to 2009. The record is 95.8 mm (3.8 in) in 1979, marked on the chart; the median year is 33.8 mm (1.3 in).

Wettest day (Rx1day) at Ceballos by year
Year	Wettest day (Rx1day)
1956	16.0 mm (0.6 in)
1957	53.8 mm (2.1 in)
1958	74.4 mm (2.9 in)
1959	22.1 mm (0.9 in)
1960	25.9 mm (1.0 in)
1961	94.0 mm (3.7 in)
1962	69.3 mm (2.7 in)
1963	22.4 mm (0.9 in)
1964	30.5 mm (1.2 in)
1965	31.8 mm (1.3 in)
1966	71.9 mm (2.8 in)
1967	24.4 mm (1.0 in)
1968	45.0 mm (1.8 in)
1969	16.8 mm (0.7 in)
1970	91.4 mm (3.6 in)
1971	77.0 mm (3.0 in)
1972	61.0 mm (2.4 in)
1973	31.8 mm (1.3 in)
1974	37.8 mm (1.5 in)
1975	22.9 mm (0.9 in)
1976	43.4 mm (1.7 in)
1977	30.0 mm (1.2 in)
1978	46.0 mm (1.8 in)
1979	95.8 mm (3.8 in)
1980	26.9 mm (1.1 in)
1981	26.9 mm (1.1 in)
1982	23.4 mm (0.9 in)
1983	15.7 mm (0.6 in)
1984	33.8 mm (1.3 in)
1985	54.9 mm (2.2 in)
1986	52.8 mm (2.1 in)
1987	31.0 mm (1.2 in)
1988	24.9 mm (1.0 in)
1990	21.3 mm (0.8 in)
1991	38.9 mm (1.5 in)
1992	25.9 mm (1.0 in)
1993	24.9 mm (1.0 in)
1994	34.8 mm (1.4 in)
1995	39.9 mm (1.6 in)
1996	39.9 mm (1.6 in)
1997	16.8 mm (0.7 in)
1998	26.9 mm (1.1 in)
1999	34.8 mm (1.4 in)
2000	27.9 mm (1.1 in)
2001	19.8 mm (0.8 in)
2002	23.9 mm (0.9 in)
2003	59.9 mm (2.4 in)
2004	48.8 mm (1.9 in)
2005	35.8 mm (1.4 in)
2006	61.5 mm (2.4 in)
2007	27.4 mm (1.1 in)
2008	44.5 mm (1.8 in)
2009	63.0 mm (2.5 in)

Wettest five days (Rx5day)

The wettest five days of the year at Ceballos, 1956 to 2009. The record is 135.5 mm (5.3 in) in 1961, marked on the chart; the median year is 53.4 mm (2.1 in).

Wettest five days (Rx5day) at Ceballos by year
Year	Wettest five days (Rx5day)
1956	30.3 mm (1.2 in)
1957	57.4 mm (2.3 in)
1958	100.4 mm (4.0 in)
1959	24.6 mm (1.0 in)
1960	54.1 mm (2.1 in)
1961	135.5 mm (5.3 in)
1962	69.6 mm (2.7 in)
1963	53.4 mm (2.1 in)
1964	64.3 mm (2.5 in)
1965	39.2 mm (1.5 in)
1966	95.1 mm (3.7 in)
1967	43.8 mm (1.7 in)
1968	74.2 mm (2.9 in)
1969	32.6 mm (1.3 in)
1970	114.5 mm (4.5 in)
1971	116.9 mm (4.6 in)
1972	104.1 mm (4.1 in)
1973	45.3 mm (1.8 in)
1974	76.7 mm (3.0 in)
1975	48.6 mm (1.9 in)
1976	43.4 mm (1.7 in)
1977	36.9 mm (1.5 in)
1978	92.2 mm (3.6 in)
1979	111.5 mm (4.4 in)
1980	48.5 mm (1.9 in)
1981	30.7 mm (1.2 in)
1982	30.9 mm (1.2 in)
1983	41.6 mm (1.6 in)
1984	67.3 mm (2.6 in)
1985	127.6 mm (5.0 in)
1986	106.1 mm (4.2 in)
1987	78.7 mm (3.1 in)
1988	34.8 mm (1.4 in)
1990	32.5 mm (1.3 in)
1991	76.5 mm (3.0 in)
1992	44.7 mm (1.8 in)
1993	50.5 mm (2.0 in)
1994	38.4 mm (1.5 in)
1995	63.8 mm (2.5 in)
1996	52.3 mm (2.1 in)
1997	16.8 mm (0.7 in)
1998	45.7 mm (1.8 in)
1999	55.6 mm (2.2 in)
2000	34.8 mm (1.4 in)
2001	23.6 mm (0.9 in)
2002	29.3 mm (1.2 in)
2003	107.7 mm (4.2 in)
2004	53.9 mm (2.1 in)
2005	37.6 mm (1.5 in)
2006	108.7 mm (4.3 in)
2007	31.5 mm (1.2 in)
2008	81.6 mm (3.2 in)
2009	63.0 mm (2.5 in)

Longest dry spell (CDD)

The longest dry spell of the year at Ceballos, 1956 to 2009. The record is 184 days in 1998, marked on the chart; the median year is 76 days.

Longest dry spell (CDD) at Ceballos by year
Year	Longest dry spell (CDD)
1956	58 days
1957	53 days
1958	84 days
1959	45 days
1960	108 days
1961	70 days
1962	178 days
1963	81 days
1964	73 days
1965	86 days
1966	67 days
1967	71 days
1968	67 days
1969	69 days
1970	94 days
1971	93 days
1972	76 days
1973	80 days
1974	74 days
1975	56 days
1976	65 days
1977	93 days
1978	123 days
1979	86 days
1980	68 days
1981	52 days
1982	56 days
1983	71 days
1984	100 days
1985	60 days
1986	83 days
1987	42 days
1988	58 days
1990	91 days
1991	66 days
1992	100 days
1993	133 days
1994	73 days
1995	96 days
1996	166 days
1997	144 days
1998	184 days
1999	122 days
2000	73 days
2001	53 days
2002	66 days
2003	54 days
2004	53 days
2005	77 days
2006	108 days
2007	127 days
2008	116 days
2009	132 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

39 years with a frost

Across 39 years with a frost, the median last spring frost at Ceballos falls on 10 March and the median first autumn frost on 18 November, which leaves a median of 253 days between them.

Fitted over all years, the growing season changes by +1.2 days per decade at this station.

Frost dates and growing season at Ceballos
Measure	Median, all years	Earliest period	Recent period (1966 to 2008)	Recent against earliest	Fitted trend
Last spring frost	10 March	n/a	8 March	n/a	-2.1 days per decade
First autumn frost	18 November	n/a	17 November	n/a	-1.0 days per decade
Growing days	253 days	n/a	254 days	n/a	+1.2 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

43 years, 1957 to 2008

A day with at least 37.0 mm (1.5 in) of rain is expected about once in 2 years. A day with at least 128.8 mm (5.1 in) of rain is expected about once in 100 years.

Rainfall return levels at Ceballos: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	37.0 mm (1.5 in)
5 years	55.8 mm (2.2 in)
10 years	70.3 mm (2.8 in)
25 years	91.3 mm (3.6 in)
50 years	109.1 mm (4.3 in)	Longer than the 43 years of record
100 years	128.8 mm (5.1 in)	Longer than the 43 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, 43 years of values from 1957 to 2008.

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: 95.8 mm (3.8 in) in 1979; 94.0 mm (3.7 in) in 1961; 91.4 mm (3.6 in) in 1970.

Download the Data

Data for Ceballos standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Ceballos 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 2026-10-17 (17 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).