El Rucio Weather Records (MXN00019067)

Record envelope, standing records and threshold days for El Rucio (MXN00019067), Mexico, with 56 years of record.

Key Facts for El Rucio

El Rucio (MXN00019067) is a weather station in Mexico at 24.68 latitude and -100.43 longitude, 1,940 m (6,364 ft) above sea level.
The station reports from 1956 to 2011, 56 years of record.
1,464 records set at El Rucio still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
El Rucio set a daily record low minimum temperature of -3.3 C (26.1 F) on 30 November 2011.

About the Station

Location: Mexico, 24.68 latitude, -100.43 longitude.
Elevation: 1,940 m (6,364 ft).
Period of record: 1956 to 2011, 56 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 El Rucio. 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 El Rucio, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	31.7 C (89.1 F)	-10.0 C (14.0 F)	n/a	n/a
Feb	33.9 C (93.0 F)	-8.3 C (17.1 F)	n/a	n/a
Mar	36.1 C (97.0 F)	-10.0 C (14.0 F)	n/a	n/a
Apr	36.7 C (98.1 F)	-2.2 C (28.0 F)	n/a	n/a
May	36.7 C (98.1 F)	0.6 C (33.1 F)	n/a	n/a
Jun	38.9 C (102.0 F)	3.9 C (39.0 F)	n/a	n/a
Jul	40.0 C (104.0 F)	1.7 C (35.1 F)	n/a	n/a
Aug	37.8 C (100.0 F)	1.7 C (35.1 F)	n/a	n/a
Sep	35.6 C (96.1 F)	-3.3 C (26.1 F)	n/a	n/a
Oct	36.7 C (98.1 F)	-5.0 C (23.0 F)	n/a	n/a
Nov	31.7 C (89.1 F)	-10.0 C (14.0 F)	n/a	n/a
Dec	36.7 C (98.1 F)	-9.4 C (15.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at El Rucio still stand. 1990 holds the most, with 98.

Standing records at El Rucio by the year they were set
Year set	Standing records
1959	2
1960	14
1962	23
1963	18
1964	42
1965	58
1966	15
1967	38
1968	72
1969	19
1970	29
1971	5
1972	11
1973	12
1974	20
1975	18
1976	31
1977	20
1978	10
1979	10
1980	12
1981	34
1982	25
1983	59
1984	7
1985	7
1986	20
1987	14
1988	74
1989	45
1990	98
1991	22
1992	18
1993	12
1994	7
1995	12
1996	14
1997	22
1998	14
1999	22
2000	7
2001	17
2002	36
2003	32
2004	51
2005	42
2006	95
2007	56
2008	35
2009	9
2010	18
2011	61

All-Time Record Progression

1 new records

1 all-time records were set at El Rucio between 19 July 2004 and 19 July 2004. Each dot is a new record.

Wettest Day of Each Month

Sep: 149.9 mm (5.9 in)

The wettest day on record for each calendar month at El Rucio. The most was 149.9 mm (5.9 in) on 24 September 1986.

Record daily precipitation for each month at El Rucio
Month	Record daily precipitation (mm)	Date
Jan	40.9 mm (1.6 in)	1 January 1973
Feb	30.5 mm (1.2 in)	24 February 2005
Mar	41.9 mm (1.6 in)	8 March 2005
Apr	32.8 mm (1.3 in)	30 April 1966
May	53.8 mm (2.1 in)	2 May 1981
Jun	89.9 mm (3.5 in)	30 June 2010
Jul	79.8 mm (3.1 in)	14 July 1986
Aug	119.9 mm (4.7 in)	30 August 1986
Sep	149.9 mm (5.9 in)	24 September 1986
Oct	45.0 mm (1.8 in)	13 October 1997
Nov	56.4 mm (2.2 in)	5 November 1986
Dec	35.8 mm (1.4 in)	2 December 1979

Period of Record Coverage

1959 to 2011

52 years of record at El Rucio, 1959 to 2011. 9 years have data for under 90 percent of days and are left out of rankings: 1959, 1960, 1962, 1966, 1967, 1982, 2004, 2008 and others.

Days with data per year at El Rucio
Year	Days with data	Share of year	Complete
1959	61	17%	No
1960	170	46%	No
1962	275	75%	No
1963	365	100%	Yes
1964	366	100%	Yes
1965	364	100%	Yes
1966	271	74%	No
1967	304	83%	No
1968	366	100%	Yes
1969	365	100%	Yes
1970	365	100%	Yes
1971	364	100%	Yes
1972	366	100%	Yes
1973	333	91%	Yes
1974	365	100%	Yes
1975	364	100%	Yes
1976	366	100%	Yes
1977	334	92%	Yes
1978	365	100%	Yes
1979	365	100%	Yes
1980	366	100%	Yes
1981	365	100%	Yes
1982	303	83%	No
1983	352	96%	Yes
1984	366	100%	Yes
1985	365	100%	Yes
1986	365	100%	Yes
1987	365	100%	Yes
1988	366	100%	Yes
1989	365	100%	Yes
1990	365	100%	Yes
1991	362	99%	Yes
1992	366	100%	Yes
1993	364	100%	Yes
1994	364	100%	Yes
1995	364	100%	Yes
1996	366	100%	Yes
1997	363	99%	Yes
1998	362	99%	Yes
1999	360	99%	Yes
2000	366	100%	Yes
2001	364	100%	Yes
2002	363	99%	Yes
2003	334	92%	Yes
2004	215	59%	No
2005	361	99%	Yes
2006	346	95%	Yes
2007	359	98%	Yes
2008	300	82%	No
2009	152	42%	No
2010	335	92%	Yes
2011	363	99%	Yes

Latest Records

Latest records at El Rucio
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 November 2011	El Rucio, MX	daily low min	-3.3 C (26.1 F)	1.1 C (2.0 F)	48 years	21 of 100 (Routine)
29 November 2011	El Rucio, MX	daily low min	-5.0 C (23.0 F)	1.7 C (3.1 F)	30 years	17 of 100 (Routine)
28 November 2011	El Rucio, MX	daily low min	-7.2 C (19.0 F)	2.2 C (4.0 F)	30 years	19 of 100 (Routine)
10 November 2011	El Rucio, MX	daily low max (Tie)	11.7 C (53.1 F)	tie	5 years	1 of 100 (Routine)
3 November 2011	El Rucio, MX	daily low min	-3.3 C (26.1 F)	1.1 C (2.0 F)	33 years	17 of 100 (Routine)
28 October 2011	El Rucio, MX	monthly low min	-5.0 C (23.0 F)	0.6 C (1.1 F)	17 years	21 of 100 (Routine)
27 October 2011	El Rucio, MX	monthly low min (Tie)	-4.4 C (24.1 F)	tie	17 years	5 of 100 (Routine)
22 October 2011	El Rucio, MX	daily low min (Tie)	2.8 C (37.0 F)	tie	45 years	4 of 100 (Routine)
20 October 2011	El Rucio, MX	daily low min	-2.2 C (28.0 F)	2.8 C (5.0 F)	36 years	23 of 100 (Routine)
18 October 2011	El Rucio, MX	daily high max (Tie)	30.0 C (86.0 F)	tie	46 years	4 of 100 (Routine)
11 October 2011	El Rucio, MX	daily low max	13.9 C (57.0 F)	1.1 C (2.0 F)	22 years	13 of 100 (Routine)
6 October 2011	El Rucio, MX	daily high max	31.7 C (89.1 F)	1.1 C (2.0 F)	44 years	20 of 100 (Routine)
5 October 2011	El Rucio, MX	daily high max	31.7 C (89.1 F)	1.1 C (2.0 F)	42 years	19 of 100 (Routine)
26 September 2011	El Rucio, MX	daily high max	32.8 C (91.0 F)	2.2 C (4.0 F)	48 years	25 of 100 (Routine)
18 September 2011	El Rucio, MX	daily high max (Tie)	31.7 C (89.1 F)	tie	28 years	3 of 100 (Routine)
17 September 2011	El Rucio, MX	daily high max (Tie)	31.7 C (89.1 F)	tie	34 years	3 of 100 (Routine)
16 September 2011	El Rucio, MX	daily high max	33.9 C (93.0 F)	1.1 C (2.0 F)	24 years	15 of 100 (Routine)
14 September 2011	El Rucio, MX	daily high max	32.8 C (91.0 F)	1.1 C (2.0 F)	24 years	15 of 100 (Routine)
13 September 2011	El Rucio, MX	daily high max	32.8 C (91.0 F)	1.1 C (2.0 F)	34 years	18 of 100 (Routine)
9 September 2011	El Rucio, MX	daily low min (Tie)	5.0 C (41.0 F)	tie	36 years	4 of 100 (Routine)

Climate Trend

38 complete years, 1963 to 2011

One stripe for each of 38 complete years at El Rucio, 1963 to 2011. Blue stripes are years cooler than the station's own mean of 15.9 C (60.7 F); red stripes are warmer. The coolest year was 1990, at 12.5 C (54.5 F), and the warmest was 1968, at 19.4 C (66.9 F). The strongest colour marks a difference of 3.5 C (6.3 F).

Annual mean temperature at El Rucio as warming stripes, 1963 to 2011
Year	Annual mean temperature	Difference from the station mean
1963	16.0 C	+0.06 C
1964	16.8 C	+0.87 C
1965	17.3 C	+1.40 C
1968	19.4 C	+3.44 C
1969	17.5 C	+1.54 C
1970	17.7 C	+1.73 C
1971	16.6 C	+0.69 C
1972	16.2 C	+0.23 C
1974	14.9 C	-1.05 C
1975	16.2 C	+0.31 C
1976	15.9 C	-0.02 C
1978	15.1 C	-0.86 C
1979	15.6 C	-0.38 C
1980	15.6 C	-0.34 C
1981	16.7 C	+0.79 C
1983	17.8 C	+1.91 C
1984	14.8 C	-1.11 C
1985	15.8 C	-0.17 C
1986	15.7 C	-0.25 C
1987	15.1 C	-0.81 C
1988	13.8 C	-2.18 C
1989	13.6 C	-2.31 C
1990	12.5 C	-3.42 C
1991	14.3 C	-1.67 C
1992	15.0 C	-0.96 C
1993	16.0 C	+0.03 C
1994	16.3 C	+0.40 C
1995	16.3 C	+0.41 C
1996	15.9 C	-0.06 C
1997	15.2 C	-0.76 C
1998	16.2 C	+0.30 C
1999	15.1 C	-0.85 C
2000	15.8 C	-0.14 C
2001	15.3 C	-0.65 C
2002	15.7 C	-0.27 C
2005	16.7 C	+0.80 C
2007	17.9 C	+1.99 C
2011	17.4 C	+1.43 C

The fitted trend in annual mean temperature here over 1963 to 2011 is -0.2 C (-0.6 to 0.1) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.4 F (-1.0 to 0.2) per decade. The slope is a straight line fitted to 38 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at El Rucio
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	-0.2 C (-0.6 to 0.1) per decade	-0.4 F (-1.0 to 0.2) per decade	1963 to 2011	38	Not clearly different from zero
Mean daily maximum	-0.7 C (-1.2 to -0.1) per decade	-1.2 F (-2.2 to -0.2) per decade	1963 to 2011	38	Fall
Mean daily minimum	0.2 C (-0.1 to 0.5) per decade	0.4 F (-0.2 to 1.0) per decade	1963 to 2011	38	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 2011

Yearly extremes at El Rucio: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	40.0 C (104.0 F)	2004	33.9 C (93.0 F)	52
Coldest night (TNn)	-10.0 C (14.0 F)	1962	-5.0 C (23.0 F)	52
Wettest day (Rx1day)	149.9 mm (5.9 in)	1986	32.8 mm (1.3 in)	55
Wettest five days (Rx5day)	239.7 mm (9.4 in)	1986	54.1 mm (2.1 in)	55
Longest dry spell (CDD)	120 days	2008	59 days	55

Hottest day (TXx)

The hottest day of the year at El Rucio, 1956 to 2011. The record is 40.0 C (104.0 F) in 2004, marked on the chart; the median year is 33.9 C (93.0 F).

Hottest day (TXx) at El Rucio by year
Year	Hottest day (TXx)
1956	n/a
1957	n/a
1958	n/a
1959	27.8 C (82.0 F)
1960	31.7 C (89.1 F)
1962	33.9 C (93.0 F)
1963	32.8 C (91.0 F)
1964	33.9 C (93.0 F)
1965	33.9 C (93.0 F)
1966	31.7 C (89.1 F)
1967	38.9 C (102.0 F)
1968	31.7 C (89.1 F)
1969	33.9 C (93.0 F)
1970	36.7 C (98.1 F)
1971	32.8 C (91.0 F)
1972	33.3 C (91.9 F)
1973	34.4 C (93.9 F)
1974	32.2 C (90.0 F)
1975	35.0 C (95.0 F)
1976	36.7 C (98.1 F)
1977	30.6 C (87.1 F)
1978	31.7 C (89.1 F)
1979	35.0 C (95.0 F)
1980	32.8 C (91.0 F)
1981	36.7 C (98.1 F)
1982	36.1 C (97.0 F)
1983	36.7 C (98.1 F)
1984	31.7 C (89.1 F)
1985	32.8 C (91.0 F)
1986	32.8 C (91.0 F)
1987	32.8 C (91.0 F)
1988	31.7 C (89.1 F)
1989	35.0 C (95.0 F)
1990	32.8 C (91.0 F)
1991	33.9 C (93.0 F)
1992	32.8 C (91.0 F)
1993	35.6 C (96.1 F)
1994	32.8 C (91.0 F)
1995	35.6 C (96.1 F)
1996	35.0 C (95.0 F)
1997	33.9 C (93.0 F)
1998	36.7 C (98.1 F)
1999	35.0 C (95.0 F)
2000	33.9 C (93.0 F)
2001	32.8 C (91.0 F)
2002	33.9 C (93.0 F)
2003	36.7 C (98.1 F)
2004	40.0 C (104.0 F)
2005	35.6 C (96.1 F)
2006	37.8 C (100.0 F)
2007	33.9 C (93.0 F)
2008	36.7 C (98.1 F)
2009	33.9 C (93.0 F)
2010	32.8 C (91.0 F)
2011	35.6 C (96.1 F)

Coldest night (TNn)

The coldest night of the year at El Rucio, 1956 to 2011. The record is -10.0 C (14.0 F) in 1962, marked on the chart; the median year is -5.0 C (23.0 F).

Coldest night (TNn) at El Rucio by year
Year	Coldest night (TNn)
1956	n/a
1957	n/a
1958	n/a
1959	0.6 C (33.1 F)
1960	0.0 C (32.0 F)
1962	-10.0 C (14.0 F)
1963	-9.4 C (15.1 F)
1964	-8.3 C (17.1 F)
1965	0.6 C (33.1 F)
1966	-3.3 C (26.1 F)
1967	-3.3 C (26.1 F)
1968	-2.2 C (28.0 F)
1969	-7.2 C (19.0 F)
1970	-1.1 C (30.0 F)
1971	-3.3 C (26.1 F)
1972	-1.1 C (30.0 F)
1973	-4.4 C (24.1 F)
1974	-5.0 C (23.0 F)
1975	-7.2 C (19.0 F)
1976	-7.2 C (19.0 F)
1977	-7.2 C (19.0 F)
1978	-5.0 C (23.0 F)
1979	-6.1 C (21.0 F)
1980	-5.0 C (23.0 F)
1981	-7.2 C (19.0 F)
1982	-5.0 C (23.0 F)
1983	-4.4 C (24.1 F)
1984	-5.0 C (23.0 F)
1985	-4.4 C (24.1 F)
1986	-7.2 C (19.0 F)
1987	-2.2 C (28.0 F)
1988	-10.0 C (14.0 F)
1989	-10.0 C (14.0 F)
1990	-7.2 C (19.0 F)
1991	-8.3 C (17.1 F)
1992	-4.4 C (24.1 F)
1993	-6.1 C (21.0 F)
1994	-6.1 C (21.0 F)
1995	-4.4 C (24.1 F)
1996	-7.2 C (19.0 F)
1997	-10.0 C (14.0 F)
1998	-6.1 C (21.0 F)
1999	-7.2 C (19.0 F)
2000	-6.1 C (21.0 F)
2001	-9.4 C (15.1 F)
2002	-7.2 C (19.0 F)
2003	-5.0 C (23.0 F)
2004	-10.0 C (14.0 F)
2005	0.0 C (32.0 F)
2006	0.6 C (33.1 F)
2007	1.7 C (35.1 F)
2008	0.0 C (32.0 F)
2009	1.7 C (35.1 F)
2010	-5.0 C (23.0 F)
2011	-7.2 C (19.0 F)

Wettest day (Rx1day)

The wettest day of the year at El Rucio, 1956 to 2011. The record is 149.9 mm (5.9 in) in 1986, marked on the chart; the median year is 32.8 mm (1.3 in).

Wettest day (Rx1day) at El Rucio by year
Year	Wettest day (Rx1day)
1956	22.4 mm (0.9 in)
1957	31.5 mm (1.2 in)
1958	33.8 mm (1.3 in)
1959	33.8 mm (1.3 in)
1960	14.0 mm (0.6 in)
1962	33.8 mm (1.3 in)
1963	39.9 mm (1.6 in)
1964	21.8 mm (0.9 in)
1965	30.0 mm (1.2 in)
1966	32.8 mm (1.3 in)
1967	32.8 mm (1.3 in)
1968	30.0 mm (1.2 in)
1969	35.8 mm (1.4 in)
1970	31.0 mm (1.2 in)
1971	30.0 mm (1.2 in)
1972	35.8 mm (1.4 in)
1973	40.9 mm (1.6 in)
1974	24.9 mm (1.0 in)
1975	27.9 mm (1.1 in)
1976	30.0 mm (1.2 in)
1977	35.8 mm (1.4 in)
1978	29.0 mm (1.1 in)
1979	35.8 mm (1.4 in)
1980	20.1 mm (0.8 in)
1981	53.8 mm (2.1 in)
1982	20.8 mm (0.8 in)
1983	20.3 mm (0.8 in)
1984	38.9 mm (1.5 in)
1985	83.8 mm (3.3 in)
1986	149.9 mm (5.9 in)
1987	30.0 mm (1.2 in)
1988	45.0 mm (1.8 in)
1989	31.0 mm (1.2 in)
1990	34.8 mm (1.4 in)
1991	25.9 mm (1.0 in)
1992	29.0 mm (1.1 in)
1993	49.8 mm (2.0 in)
1994	29.0 mm (1.1 in)
1995	24.4 mm (1.0 in)
1996	25.9 mm (1.0 in)
1997	53.3 mm (2.1 in)
1998	17.8 mm (0.7 in)
1999	37.3 mm (1.5 in)
2000	46.0 mm (1.8 in)
2001	42.9 mm (1.7 in)
2002	31.0 mm (1.2 in)
2003	49.8 mm (2.0 in)
2004	26.9 mm (1.1 in)
2005	41.9 mm (1.6 in)
2006	33.8 mm (1.3 in)
2007	22.9 mm (0.9 in)
2008	47.0 mm (1.9 in)
2009	47.8 mm (1.9 in)
2010	89.9 mm (3.5 in)
2011	19.1 mm (0.8 in)

Wettest five days (Rx5day)

The wettest five days of the year at El Rucio, 1956 to 2011. The record is 239.7 mm (9.4 in) in 1986, marked on the chart; the median year is 54.1 mm (2.1 in).

Wettest five days (Rx5day) at El Rucio by year
Year	Wettest five days (Rx5day)
1956	31.3 mm (1.2 in)
1957	59.2 mm (2.3 in)
1958	67.6 mm (2.7 in)
1959	51.1 mm (2.0 in)
1960	27.7 mm (1.1 in)
1962	46.5 mm (1.8 in)
1963	41.6 mm (1.6 in)
1964	46.6 mm (1.8 in)
1965	42.7 mm (1.7 in)
1966	34.8 mm (1.4 in)
1967	56.4 mm (2.2 in)
1968	73.6 mm (2.9 in)
1969	61.5 mm (2.4 in)
1970	37.6 mm (1.5 in)
1971	88.4 mm (3.5 in)
1972	48.2 mm (1.9 in)
1973	58.7 mm (2.3 in)
1974	42.7 mm (1.7 in)
1975	71.3 mm (2.8 in)
1976	67.6 mm (2.7 in)
1977	35.8 mm (1.4 in)
1978	54.1 mm (2.1 in)
1979	55.6 mm (2.2 in)
1980	47.4 mm (1.9 in)
1981	56.8 mm (2.2 in)
1982	67.6 mm (2.7 in)
1983	65.5 mm (2.6 in)
1984	48.6 mm (1.9 in)
1985	101.9 mm (4.0 in)
1986	239.7 mm (9.4 in)
1987	71.6 mm (2.8 in)
1988	66.7 mm (2.6 in)
1989	32.0 mm (1.3 in)
1990	64.5 mm (2.5 in)
1991	39.2 mm (1.5 in)
1992	49.3 mm (1.9 in)
1993	90.2 mm (3.6 in)
1994	37.9 mm (1.5 in)
1995	62.1 mm (2.4 in)
1996	25.9 mm (1.0 in)
1997	56.9 mm (2.2 in)
1998	25.5 mm (1.0 in)
1999	39.2 mm (1.5 in)
2000	46.3 mm (1.8 in)
2001	42.9 mm (1.7 in)
2002	35.8 mm (1.4 in)
2003	64.8 mm (2.6 in)
2004	28.4 mm (1.1 in)
2005	64.0 mm (2.5 in)
2006	62.2 mm (2.4 in)
2007	42.7 mm (1.7 in)
2008	83.8 mm (3.3 in)
2009	89.5 mm (3.5 in)
2010	159.5 mm (6.3 in)
2011	19.1 mm (0.8 in)

Longest dry spell (CDD)

The longest dry spell of the year at El Rucio, 1956 to 2011. The record is 120 days in 2008, marked on the chart; the median year is 59 days.

Longest dry spell (CDD) at El Rucio by year
Year	Longest dry spell (CDD)
1956	35 days
1957	72 days
1958	37 days
1959	33 days
1960	56 days
1962	33 days
1963	42 days
1964	41 days
1965	56 days
1966	74 days
1967	46 days
1968	37 days
1969	52 days
1970	74 days
1971	76 days
1972	59 days
1973	68 days
1974	79 days
1975	97 days
1976	80 days
1977	45 days
1978	49 days
1979	86 days
1980	65 days
1981	62 days
1982	55 days
1983	112 days
1984	54 days
1985	39 days
1986	52 days
1987	60 days
1988	44 days
1989	59 days
1990	29 days
1991	58 days
1992	37 days
1993	54 days
1994	91 days
1995	85 days
1996	68 days
1997	36 days
1998	117 days
1999	77 days
2000	63 days
2001	34 days
2002	51 days
2003	59 days
2004	83 days
2005	99 days
2006	59 days
2007	93 days
2008	120 days
2009	67 days
2010	71 days
2011	49 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

31 years with a frost

Across 31 years with a frost, the median last spring frost at El Rucio falls on 17 March and the median first autumn frost on 5 November, which leaves a median of 225 days between them.

Fitted over all years, the growing season changes by -13.4 days per decade at this station.

Frost dates and growing season at El Rucio
Measure	Median, all years	Earliest period	Recent period (1964 to 2011)	Recent against earliest	Fitted trend
Last spring frost	17 March	n/a	17 March	n/a	+3.9 days per decade
First autumn frost	5 November	n/a	5 November	n/a	-9.5 days per decade
Growing days	225 days	n/a	224 days	n/a	-13.4 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

47 years, 1957 to 2011

A day with at least 31.6 mm (1.2 in) of rain is expected about once in 2 years. A day with at least 125.9 mm (5.0 in) of rain is expected about once in 100 years.

Rainfall return levels at El Rucio: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	31.6 mm (1.2 in)
5 years	44.1 mm (1.7 in)
10 years	56.0 mm (2.2 in)
25 years	76.9 mm (3.0 in)
50 years	98.2 mm (3.9 in)	Longer than the 47 years of record
100 years	125.9 mm (5.0 in)	Longer than the 47 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, 47 years of values from 1957 to 2011.

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: 149.9 mm (5.9 in) in 1986; 89.9 mm (3.5 in) in 2010; 83.8 mm (3.3 in) in 1985.

Download the Data

Data for El Rucio standing records by year: CSV or JSON. Field meanings are on the data page.
Data for El Rucio 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).