Valle de Santiago Weather Records (MXN00011079)

Record envelope, standing records and threshold days for Valle de Santiago (MXN00011079), Mexico, with 91 years of record.

Key Facts for Valle de Santiago

Valle de Santiago (MXN00011079) is a weather station in Mexico at 20.37 latitude and -101.17 longitude, 1,790 m (5,872 ft) above sea level.
The station reports from 1922 to 2012, 91 years of record.
1,464 records set at Valle de Santiago still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Valle de Santiago tied a daily record low maximum temperature of 17.8 C (64.0 F) on 11 December 2012.

About the Station

Location: Mexico, 20.37 latitude, -101.17 longitude.
Elevation: 1,790 m (5,872 ft).
Period of record: 1922 to 2012, 91 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 Valle de Santiago. 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 Valle de Santiago, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	32.8 C (91.0 F)	-6.1 C (21.0 F)	n/a	n/a
Feb	35.0 C (95.0 F)	-5.0 C (23.0 F)	n/a	n/a
Mar	43.3 C (109.9 F)	-2.2 C (28.0 F)	n/a	n/a
Apr	42.8 C (109.0 F)	-0.6 C (30.9 F)	n/a	n/a
May	45.0 C (113.0 F)	5.0 C (41.0 F)	n/a	n/a
Jun	40.0 C (104.0 F)	2.8 C (37.0 F)	n/a	n/a
Jul	40.0 C (104.0 F)	7.8 C (46.0 F)	n/a	n/a
Aug	40.0 C (104.0 F)	7.2 C (45.0 F)	n/a	n/a
Sep	40.6 C (105.1 F)	3.9 C (39.0 F)	n/a	n/a
Oct	33.9 C (93.0 F)	-1.7 C (28.9 F)	n/a	n/a
Nov	33.3 C (91.9 F)	-6.1 C (21.0 F)	n/a	n/a
Dec	33.9 C (93.0 F)	-7.2 C (19.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Valle de Santiago still stand. 1930 holds the most, with 152.

Standing records at Valle de Santiago by the year they were set
Year set	Standing records
1922	16
1923	11
1924	11
1925	19
1926	8
1927	12
1928	38
1929	24
1930	152
1941	5
1942	11
1943	4
1944	5
1945	22
1946	142
1947	53
1948	26
1949	11
1950	6
1951	140
1952	18
1953	29
1954	3
1955	7
1956	11
1957	4
1958	11
1959	33
1960	30
1961	53
1962	46
1963	35
1964	34
1965	45
1966	51
1967	36
1968	34
1969	38
1970	22
1971	15
1973	2
1974	2
1975	1
1976	4
1977	2
1978	6
1979	19
1980	4
1982	1
1983	4
1984	2
1985	3
1986	2
1987	5
1988	2
1989	3
1991	5
1992	9
1993	6
1994	2
1995	1
1996	1
1997	6
1998	1
1999	10
2000	9
2001	5
2002	7
2003	2
2004	12
2005	3
2006	6
2007	9
2008	5
2009	3
2010	5
2011	8
2012	16

All-Time Record Progression

1 new records

1 all-time records were set at Valle de Santiago between 19 July 1970 and 19 July 1970. Each dot is a new record.

Wettest Day of Each Month

Jul: 106.9 mm (4.2 in)

The wettest day on record for each calendar month at Valle de Santiago. The most was 106.9 mm (4.2 in) on 19 July 1970.

Record daily precipitation for each month at Valle de Santiago
Month	Record daily precipitation (mm)	Date
Jan	34.0 mm (1.3 in)	24 January 1980
Feb	73.9 mm (2.9 in)	3 February 2010
Mar	88.9 mm (3.5 in)	21 March 1925
Apr	28.4 mm (1.1 in)	13 April 1954
May	50.8 mm (2.0 in)	24 May 1982
Jun	64.3 mm (2.5 in)	18 June 2012
Jul	106.9 mm (4.2 in)	19 July 1970
Aug	82.3 mm (3.2 in)	9 August 1984
Sep	81.8 mm (3.2 in)	19 September 1957
Oct	79.8 mm (3.1 in)	30 October 1995
Nov	54.9 mm (2.2 in)	5 November 1952
Dec	24.9 mm (1.0 in)	10 December 1953

Period of Record Coverage

1922 to 2012

81 years of record at Valle de Santiago, 1922 to 2012. 14 years have data for under 90 percent of days and are left out of rankings: 1922, 1941, 1942, 1943, 1944, 1946, 1947, 1981 and others.

Days with data per year at Valle de Santiago
Year	Days with data	Share of year	Complete
1922	150	41%	No
1923	365	100%	Yes
1924	364	99%	Yes
1925	365	100%	Yes
1926	365	100%	Yes
1927	365	100%	Yes
1928	365	100%	Yes
1929	365	100%	Yes
1930	365	100%	Yes
1941	43	12%	No
1942	306	84%	No
1943	92	25%	No
1944	208	57%	No
1945	365	100%	Yes
1946	306	84%	No
1947	286	78%	No
1948	364	99%	Yes
1949	336	92%	Yes
1950	365	100%	Yes
1951	365	100%	Yes
1952	334	91%	Yes
1953	365	100%	Yes
1954	365	100%	Yes
1955	365	100%	Yes
1956	365	100%	Yes
1957	365	100%	Yes
1958	362	99%	Yes
1959	365	100%	Yes
1960	365	100%	Yes
1961	365	100%	Yes
1962	365	100%	Yes
1963	365	100%	Yes
1964	334	91%	Yes
1965	365	100%	Yes
1966	365	100%	Yes
1967	362	99%	Yes
1968	365	100%	Yes
1969	365	100%	Yes
1970	365	100%	Yes
1971	365	100%	Yes
1972	365	100%	Yes
1973	365	100%	Yes
1974	365	100%	Yes
1975	365	100%	Yes
1976	365	100%	Yes
1977	360	99%	Yes
1978	365	100%	Yes
1979	365	100%	Yes
1980	365	100%	Yes
1981	211	58%	No
1982	211	58%	No
1983	335	92%	Yes
1984	365	100%	Yes
1985	365	100%	Yes
1986	365	100%	Yes
1987	365	100%	Yes
1988	180	49%	No
1989	181	50%	No
1990	63	17%	No
1991	365	100%	Yes
1992	364	99%	Yes
1993	333	91%	Yes
1994	347	95%	Yes
1995	354	97%	Yes
1996	357	98%	Yes
1997	354	97%	Yes
1998	296	81%	No
1999	308	84%	No
2000	360	98%	Yes
2001	353	97%	Yes
2002	350	96%	Yes
2003	359	98%	Yes
2004	366	100%	Yes
2005	364	100%	Yes
2006	365	100%	Yes
2007	365	100%	Yes
2008	366	100%	Yes
2009	364	100%	Yes
2010	364	100%	Yes
2011	365	100%	Yes
2012	366	100%	Yes

Latest Records

Latest records at Valle de Santiago
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
11 December 2012	Valle de Santiago, MX	daily low max (Tie)	17.8 C (64.0 F)	tie	55 years	6 of 100 (Routine)
25 November 2012	Valle de Santiago, MX	daily low max (Tie)	18.9 C (66.0 F)	tie	56 years	6 of 100 (Routine)
24 November 2012	Valle de Santiago, MX	daily low max (Tie)	20.0 C (68.0 F)	tie	83 years	8 of 100 (Routine)
5 November 2012	Valle de Santiago, MX	daily low max	17.8 C (64.0 F)	1.1 C (2.0 F)	42 years	24 of 100 (Routine)
4 November 2012	Valle de Santiago, MX	daily low max (Tie)	16.7 C (62.1 F)	tie	54 years	6 of 100 (Routine)
3 November 2012	Valle de Santiago, MX	daily rain (Tie)	11.4 mm (0.4 in)	tie	10 years	3 of 100 (Routine)
6 October 2012	Valle de Santiago, MX	daily low min (Tie)	5.0 C (41.0 F)	tie	48 years	5 of 100 (Routine)
5 October 2012	Valle de Santiago, MX	daily low min	5.0 C (41.0 F)	1.7 C (3.1 F)	51 years	29 of 100 (Routine)
4 October 2012	Valle de Santiago, MX	daily low min	5.0 C (41.0 F)	1.7 C (3.1 F)	51 years	29 of 100 (Routine)
29 August 2012	Valle de Santiago, MX	daily low max (Tie)	23.9 C (75.0 F)	tie	36 years	4 of 100 (Routine)
28 August 2012	Valle de Santiago, MX	daily low max (Tie)	23.9 C (75.0 F)	tie	45 years	5 of 100 (Routine)
27 August 2012	Valle de Santiago, MX	daily low max	22.8 C (73.0 F)	1.1 C (2.0 F)	58 years	30 of 100 (Routine)
19 August 2012	Valle de Santiago, MX	daily low max	21.7 C (71.1 F)	2.2 C (4.0 F)	17 years	23 of 100 (Routine)
18 August 2012	Valle de Santiago, MX	daily low max (Tie)	21.7 C (71.1 F)	tie	86 years	8 of 100 (Routine)
11 August 2012	Valle de Santiago, MX	daily low max	20.6 C (69.1 F)	2.2 C (4.0 F)	89 years	44 of 100 (Notable)
10 August 2012	Valle de Santiago, MX	daily low max	20.6 C (69.1 F)	1.1 C (2.0 F)	89 years	39 of 100 (Notable)
18 June 2012	Valle de Santiago, MX	monthly rain	64.3 mm (2.5 in)	4.9 mm (0.19 in)	35 years	33 of 100 (Routine)
25 April 2012	Valle de Santiago, MX	daily low min (Tie)	7.8 C (46.0 F)	tie	44 years	5 of 100 (Routine)
24 April 2012	Valle de Santiago, MX	daily low min	6.7 C (44.1 F)	1.1 C (2.0 F)	46 years	25 of 100 (Routine)
29 February 2012	Valle de Santiago, MX	daily high max	28.9 C (84.0 F)	1.1 C (2.0 F)	16 years	16 of 100 (Routine)

Climate Trend

63 complete years, 1923 to 2012

One stripe for each of 63 complete years at Valle de Santiago, 1923 to 2012. Blue stripes are years cooler than the station's own mean of 19.1 C (66.3 F); red stripes are warmer. The coolest year was 1968, at 17.2 C (62.9 F), and the warmest was 1930, at 22.7 C (72.9 F). The strongest colour marks a difference of 3.7 C (6.7 F).

Annual mean temperature at Valle de Santiago as warming stripes, 1923 to 2012
Year	Annual mean temperature	Difference from the station mean
1923	19.7 C	+0.58 C
1924	19.8 C	+0.75 C
1925	19.7 C	+0.63 C
1926	19.6 C	+0.54 C
1927	19.8 C	+0.70 C
1928	20.1 C	+1.04 C
1929	21.1 C	+2.04 C
1930	22.7 C	+3.67 C
1945	21.1 C	+2.02 C
1948	20.8 C	+1.72 C
1950	20.4 C	+1.34 C
1951	22.6 C	+3.52 C
1953	20.9 C	+1.85 C
1954	18.9 C	-0.20 C
1955	18.8 C	-0.28 C
1956	18.6 C	-0.45 C
1957	19.7 C	+0.58 C
1958	18.6 C	-0.50 C
1959	17.5 C	-1.61 C
1960	18.3 C	-0.81 C
1961	17.9 C	-1.17 C
1962	18.4 C	-0.67 C
1963	17.9 C	-1.21 C
1965	17.9 C	-1.17 C
1966	17.6 C	-1.45 C
1967	17.3 C	-1.73 C
1968	17.2 C	-1.89 C
1969	18.2 C	-0.89 C
1970	17.9 C	-1.18 C
1971	18.3 C	-0.74 C
1972	19.6 C	+0.50 C
1973	19.4 C	+0.28 C
1974	19.1 C	0.00 C
1975	18.8 C	-0.25 C
1976	18.7 C	-0.42 C
1977	19.0 C	-0.07 C
1978	18.8 C	-0.30 C
1979	18.4 C	-0.63 C
1980	19.7 C	+0.65 C
1984	19.0 C	-0.05 C
1985	19.0 C	-0.08 C
1986	20.2 C	+1.09 C
1987	18.9 C	-0.19 C
1991	19.2 C	+0.12 C
1992	18.3 C	-0.81 C
1993	20.1 C	+1.07 C
1994	21.1 C	+2.02 C
1995	19.9 C	+0.79 C
1996	19.2 C	+0.17 C
1997	19.4 C	+0.34 C
2000	17.6 C	-1.43 C
2001	18.0 C	-1.05 C
2002	18.7 C	-0.39 C
2003	18.9 C	-0.18 C
2004	17.9 C	-1.20 C
2005	18.6 C	-0.46 C
2006	18.0 C	-1.04 C
2007	18.2 C	-0.91 C
2008	18.0 C	-1.08 C
2009	19.1 C	-0.02 C
2010	18.1 C	-0.95 C
2011	19.0 C	-0.04 C
2012	18.8 C	-0.31 C

The annual mean temperature here has fallen by 0.2 C (0.1 to 0.3) per decade over 1923 to 2012. In Fahrenheit: 0.3 F (0.1 to 0.5) per decade. The slope is a straight line fitted to 63 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Valle de Santiago
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	-0.2 C (-0.3 to -0.1) per decade	-0.3 F (-0.5 to -0.1) per decade	1923 to 2012	63	Fall
Mean daily maximum	-0.2 C (-0.3 to -0.1) per decade	-0.3 F (-0.5 to -0.1) per decade	1923 to 2012	63	Fall
Mean daily minimum	-0.21 C (-0.40 to -0.03) per decade	-0.39 F (-0.73 to -0.05) per decade	1923 to 2012	63	Fall

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

1922 to 2012

Yearly extremes at Valle de Santiago: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	45.0 C (113.0 F)	1930	35.6 C (96.1 F)	81
Coldest night (TNn)	-7.2 C (19.0 F)	1963	0.6 C (33.1 F)	81
Wettest day (Rx1day)	106.9 mm (4.2 in)	1970	47.0 mm (1.9 in)	81
Wettest five days (Rx5day)	164.8 mm (6.5 in)	1948	92.4 mm (3.6 in)	81
Longest dry spell (CDD)	150 days	1926	67 days	81

Hottest day (TXx)

The hottest day of the year at Valle de Santiago, 1922 to 2012. The record is 45.0 C (113.0 F) in 1930, marked on the chart; the median year is 35.6 C (96.1 F).

Hottest day (TXx) at Valle de Santiago by year
Year	Hottest day (TXx)
1922	29.4 C (84.9 F)
1923	35.6 C (96.1 F)
1924	35.0 C (95.0 F)
1925	36.7 C (98.1 F)
1926	32.8 C (91.0 F)
1927	36.7 C (98.1 F)
1928	36.7 C (98.1 F)
1929	38.9 C (102.0 F)
1930	45.0 C (113.0 F)
1941	26.1 C (79.0 F)
1942	35.6 C (96.1 F)
1943	36.7 C (98.1 F)
1944	36.1 C (97.0 F)
1945	38.9 C (102.0 F)
1946	43.3 C (109.9 F)
1947	36.7 C (98.1 F)
1948	36.7 C (98.1 F)
1949	35.0 C (95.0 F)
1950	38.9 C (102.0 F)
1951	37.2 C (99.0 F)
1952	39.4 C (102.9 F)
1953	40.0 C (104.0 F)
1954	34.4 C (93.9 F)
1955	34.4 C (93.9 F)
1956	32.8 C (91.0 F)
1957	35.0 C (95.0 F)
1958	34.4 C (93.9 F)
1959	35.6 C (96.1 F)
1960	38.3 C (100.9 F)
1961	39.4 C (102.9 F)
1962	38.9 C (102.0 F)
1963	37.8 C (100.0 F)
1964	38.3 C (100.9 F)
1965	40.0 C (104.0 F)
1966	39.4 C (102.9 F)
1967	41.1 C (106.0 F)
1968	37.2 C (99.0 F)
1969	40.0 C (104.0 F)
1970	38.9 C (102.0 F)
1971	36.7 C (98.1 F)
1972	35.6 C (96.1 F)
1973	35.6 C (96.1 F)
1974	35.0 C (95.0 F)
1975	35.0 C (95.0 F)
1976	35.6 C (96.1 F)
1977	32.8 C (91.0 F)
1978	35.6 C (96.1 F)
1979	35.0 C (95.0 F)
1980	35.0 C (95.0 F)
1981	35.0 C (95.0 F)
1982	35.6 C (96.1 F)
1983	37.2 C (99.0 F)
1984	35.0 C (95.0 F)
1985	35.0 C (95.0 F)
1986	37.2 C (99.0 F)
1987	35.6 C (96.1 F)
1988	33.9 C (93.0 F)
1989	35.6 C (96.1 F)
1990	29.4 C (84.9 F)
1991	35.6 C (96.1 F)
1992	31.7 C (89.1 F)
1993	37.2 C (99.0 F)
1994	36.1 C (97.0 F)
1995	35.0 C (95.0 F)
1996	33.9 C (93.0 F)
1997	33.9 C (93.0 F)
1998	35.6 C (96.1 F)
1999	35.0 C (95.0 F)
2000	33.9 C (93.0 F)
2001	33.9 C (93.0 F)
2002	35.0 C (95.0 F)
2003	35.0 C (95.0 F)
2004	33.9 C (93.0 F)
2005	35.6 C (96.1 F)
2006	32.8 C (91.0 F)
2007	33.9 C (93.0 F)
2008	35.6 C (96.1 F)
2009	38.9 C (102.0 F)
2010	37.8 C (100.0 F)
2011	36.7 C (98.1 F)
2012	35.0 C (95.0 F)

Coldest night (TNn)

The coldest night of the year at Valle de Santiago, 1922 to 2012. The record is -7.2 C (19.0 F) in 1963, marked on the chart; the median year is 0.6 C (33.1 F).

Coldest night (TNn) at Valle de Santiago by year
Year	Coldest night (TNn)
1922	2.8 C (37.0 F)
1923	5.6 C (42.1 F)
1924	2.8 C (37.0 F)
1925	3.9 C (39.0 F)
1926	3.9 C (39.0 F)
1927	1.7 C (35.1 F)
1928	2.8 C (37.0 F)
1929	1.7 C (35.1 F)
1930	2.8 C (37.0 F)
1941	8.3 C (46.9 F)
1942	0.0 C (32.0 F)
1943	13.9 C (57.0 F)
1944	13.9 C (57.0 F)
1945	6.7 C (44.1 F)
1946	10.0 C (50.0 F)
1947	3.9 C (39.0 F)
1948	1.7 C (35.1 F)
1949	0.6 C (33.1 F)
1950	0.0 C (32.0 F)
1951	0.6 C (33.1 F)
1952	1.7 C (35.1 F)
1953	0.6 C (33.1 F)
1954	0.0 C (32.0 F)
1955	-2.2 C (28.0 F)
1956	-2.8 C (27.0 F)
1957	-1.1 C (30.0 F)
1958	-3.3 C (26.1 F)
1959	-4.4 C (24.1 F)
1960	-5.0 C (23.0 F)
1961	-4.4 C (24.1 F)
1962	-5.0 C (23.0 F)
1963	-7.2 C (19.0 F)
1964	-6.1 C (21.0 F)
1965	-3.9 C (25.0 F)
1966	-5.0 C (23.0 F)
1967	-5.0 C (23.0 F)
1968	-4.4 C (24.1 F)
1969	-5.0 C (23.0 F)
1970	-6.1 C (21.0 F)
1971	-3.3 C (26.1 F)
1972	1.7 C (35.1 F)
1973	0.0 C (32.0 F)
1974	1.7 C (35.1 F)
1975	-2.2 C (28.0 F)
1976	-2.2 C (28.0 F)
1977	1.7 C (35.1 F)
1978	2.8 C (37.0 F)
1979	-1.1 C (30.0 F)
1980	1.7 C (35.1 F)
1981	0.6 C (33.1 F)
1982	1.7 C (35.1 F)
1983	0.6 C (33.1 F)
1984	1.7 C (35.1 F)
1985	0.6 C (33.1 F)
1986	0.6 C (33.1 F)
1987	1.1 C (34.0 F)
1988	0.0 C (32.0 F)
1989	1.1 C (34.0 F)
1990	1.7 C (35.1 F)
1991	1.7 C (35.1 F)
1992	2.2 C (36.0 F)
1993	1.7 C (35.1 F)
1994	3.9 C (39.0 F)
1995	1.7 C (35.1 F)
1996	1.7 C (35.1 F)
1997	-2.2 C (28.0 F)
1998	2.8 C (37.0 F)
1999	0.0 C (32.0 F)
2000	0.0 C (32.0 F)
2001	0.0 C (32.0 F)
2002	-4.4 C (24.1 F)
2003	-5.0 C (23.0 F)
2004	-2.2 C (28.0 F)
2005	0.0 C (32.0 F)
2006	-4.4 C (24.1 F)
2007	1.7 C (35.1 F)
2008	0.0 C (32.0 F)
2009	0.0 C (32.0 F)
2010	-2.2 C (28.0 F)
2011	-2.8 C (27.0 F)
2012	1.1 C (34.0 F)

Wettest day (Rx1day)

The wettest day of the year at Valle de Santiago, 1922 to 2012. The record is 106.9 mm (4.2 in) in 1970, marked on the chart; the median year is 47.0 mm (1.9 in).

Wettest day (Rx1day) at Valle de Santiago by year
Year	Wettest day (Rx1day)
1922	22.9 mm (0.9 in)
1923	37.8 mm (1.5 in)
1924	33.8 mm (1.3 in)
1925	88.9 mm (3.5 in)
1926	24.6 mm (1.0 in)
1927	25.4 mm (1.0 in)
1928	24.6 mm (1.0 in)
1929	24.6 mm (1.0 in)
1930	24.6 mm (1.0 in)
1941	7.9 mm (0.31 in)
1942	40.9 mm (1.6 in)
1943	55.4 mm (2.2 in)
1944	9.9 mm (0.39 in)
1945	30.0 mm (1.2 in)
1946	34.8 mm (1.4 in)
1947	32.8 mm (1.3 in)
1948	71.4 mm (2.8 in)
1949	43.9 mm (1.7 in)
1950	43.9 mm (1.7 in)
1951	55.9 mm (2.2 in)
1952	54.9 mm (2.2 in)
1953	68.8 mm (2.7 in)
1954	51.1 mm (2.0 in)
1955	54.4 mm (2.1 in)
1956	36.8 mm (1.4 in)
1957	81.8 mm (3.2 in)
1958	42.4 mm (1.7 in)
1959	48.8 mm (1.9 in)
1960	44.5 mm (1.8 in)
1961	32.8 mm (1.3 in)
1962	50.3 mm (2.0 in)
1963	37.3 mm (1.5 in)
1964	42.9 mm (1.7 in)
1965	48.8 mm (1.9 in)
1966	52.3 mm (2.1 in)
1967	54.4 mm (2.1 in)
1968	45.0 mm (1.8 in)
1969	58.9 mm (2.3 in)
1970	106.9 mm (4.2 in)
1971	31.8 mm (1.3 in)
1972	65.3 mm (2.6 in)
1973	69.6 mm (2.7 in)
1974	47.5 mm (1.9 in)
1975	54.4 mm (2.1 in)
1976	46.2 mm (1.8 in)
1977	59.4 mm (2.3 in)
1978	39.9 mm (1.6 in)
1979	63.8 mm (2.5 in)
1980	62.7 mm (2.5 in)
1981	38.9 mm (1.5 in)
1982	50.8 mm (2.0 in)
1983	39.1 mm (1.5 in)
1984	82.3 mm (3.2 in)
1985	45.0 mm (1.8 in)
1986	53.8 mm (2.1 in)
1987	46.2 mm (1.8 in)
1988	19.3 mm (0.8 in)
1989	12.2 mm (0.5 in)
1990	53.3 mm (2.1 in)
1991	59.4 mm (2.3 in)
1992	65.8 mm (2.6 in)
1993	78.7 mm (3.1 in)
1994	28.2 mm (1.1 in)
1995	79.8 mm (3.1 in)
1996	36.6 mm (1.4 in)
1997	35.8 mm (1.4 in)
1998	64.8 mm (2.6 in)
1999	34.8 mm (1.4 in)
2000	47.8 mm (1.9 in)
2001	42.9 mm (1.7 in)
2002	47.8 mm (1.9 in)
2003	53.3 mm (2.1 in)
2004	37.8 mm (1.5 in)
2005	48.8 mm (1.9 in)
2006	43.9 mm (1.7 in)
2007	42.9 mm (1.7 in)
2008	57.9 mm (2.3 in)
2009	47.0 mm (1.9 in)
2010	73.9 mm (2.9 in)
2011	77.0 mm (3.0 in)
2012	64.3 mm (2.5 in)

Wettest five days (Rx5day)

The wettest five days of the year at Valle de Santiago, 1922 to 2012. The record is 164.8 mm (6.5 in) in 1948, marked on the chart; the median year is 92.4 mm (3.6 in).

Wettest five days (Rx5day) at Valle de Santiago by year
Year	Wettest five days (Rx5day)
1922	55.2 mm (2.2 in)
1923	105.9 mm (4.2 in)
1924	83.5 mm (3.3 in)
1925	117.9 mm (4.6 in)
1926	87.1 mm (3.4 in)
1927	100.6 mm (4.0 in)
1928	103.8 mm (4.1 in)
1929	88.9 mm (3.5 in)
1930	98.8 mm (3.9 in)
1941	12.7 mm (0.5 in)
1942	74.5 mm (2.9 in)
1943	100.1 mm (3.9 in)
1944	15.3 mm (0.6 in)
1945	54.6 mm (2.1 in)
1946	56.2 mm (2.2 in)
1947	70.3 mm (2.8 in)
1948	164.8 mm (6.5 in)
1949	116.6 mm (4.6 in)
1950	86.4 mm (3.4 in)
1951	89.6 mm (3.5 in)
1952	92.4 mm (3.6 in)
1953	72.7 mm (2.9 in)
1954	97.0 mm (3.8 in)
1955	90.0 mm (3.5 in)
1956	58.9 mm (2.3 in)
1957	107.7 mm (4.2 in)
1958	87.7 mm (3.5 in)
1959	102.0 mm (4.0 in)
1960	83.4 mm (3.3 in)
1961	91.9 mm (3.6 in)
1962	112.5 mm (4.4 in)
1963	62.0 mm (2.4 in)
1964	77.1 mm (3.0 in)
1965	116.4 mm (4.6 in)
1966	108.5 mm (4.3 in)
1967	110.9 mm (4.4 in)
1968	97.6 mm (3.8 in)
1969	90.6 mm (3.6 in)
1970	126.4 mm (5.0 in)
1971	85.2 mm (3.4 in)
1972	104.2 mm (4.1 in)
1973	144.6 mm (5.7 in)
1974	78.7 mm (3.1 in)
1975	102.4 mm (4.0 in)
1976	160.5 mm (6.3 in)
1977	78.9 mm (3.1 in)
1978	102.4 mm (4.0 in)
1979	99.4 mm (3.9 in)
1980	116.6 mm (4.6 in)
1981	68.9 mm (2.7 in)
1982	68.9 mm (2.7 in)
1983	108.8 mm (4.3 in)
1984	125.5 mm (4.9 in)
1985	102.0 mm (4.0 in)
1986	98.1 mm (3.9 in)
1987	65.5 mm (2.6 in)
1988	51.7 mm (2.0 in)
1989	27.4 mm (1.1 in)
1990	73.1 mm (2.9 in)
1991	128.6 mm (5.1 in)
1992	85.6 mm (3.4 in)
1993	102.6 mm (4.0 in)
1994	56.2 mm (2.2 in)
1995	91.3 mm (3.6 in)
1996	119.1 mm (4.7 in)
1997	86.4 mm (3.4 in)
1998	126.3 mm (5.0 in)
1999	93.8 mm (3.7 in)
2000	88.5 mm (3.5 in)
2001	100.0 mm (3.9 in)
2002	102.9 mm (4.1 in)
2003	107.0 mm (4.2 in)
2004	84.0 mm (3.3 in)
2005	98.1 mm (3.9 in)
2006	80.8 mm (3.2 in)
2007	66.3 mm (2.6 in)
2008	123.5 mm (4.9 in)
2009	71.2 mm (2.8 in)
2010	142.8 mm (5.6 in)
2011	126.9 mm (5.0 in)
2012	76.7 mm (3.0 in)

Longest dry spell (CDD)

The longest dry spell of the year at Valle de Santiago, 1922 to 2012. The record is 150 days in 1926, marked on the chart; the median year is 67 days.

Longest dry spell (CDD) at Valle de Santiago by year
Year	Longest dry spell (CDD)
1922	32 days
1923	109 days
1924	90 days
1925	80 days
1926	150 days
1927	114 days
1928	57 days
1929	102 days
1930	107 days
1941	24 days
1942	74 days
1943	96 days
1944	65 days
1945	54 days
1946	38 days
1947	108 days
1948	39 days
1949	93 days
1950	109 days
1951	77 days
1952	59 days
1953	53 days
1954	55 days
1955	75 days
1956	59 days
1957	48 days
1958	114 days
1959	51 days
1960	62 days
1961	47 days
1962	104 days
1963	78 days
1964	30 days
1965	42 days
1966	67 days
1967	46 days
1968	33 days
1969	91 days
1970	65 days
1971	70 days
1972	59 days
1973	45 days
1974	45 days
1975	106 days
1976	59 days
1977	47 days
1978	57 days
1979	77 days
1980	31 days
1981	34 days
1982	45 days
1983	69 days
1984	70 days
1985	81 days
1986	69 days
1987	68 days
1988	67 days
1989	103 days
1990	67 days
1991	120 days
1992	35 days
1993	82 days
1994	65 days
1995	72 days
1996	85 days
1997	51 days
1998	141 days
1999	107 days
2000	141 days
2001	52 days
2002	56 days
2003	78 days
2004	51 days
2005	81 days
2006	60 days
2007	49 days
2008	93 days
2009	77 days
2010	98 days
2011	149 days
2012	47 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

21 years with a frost

Across 21 years with a frost, the median last spring frost at Valle de Santiago falls on 16 February and the median first autumn frost on 18 November, which leaves a median of 274 days between them.

Frost dates and growing season at Valle de Santiago
Measure	Median, all years	Earliest period	Recent period (1958 to 2010)	Recent against earliest	Fitted trend
Last spring frost	16 February	n/a	16 February	n/a	n/a
First autumn frost	18 November	n/a	18 November	n/a	n/a
Growing days	274 days	n/a	274 days	n/a	n/a

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

71 years, 1923 to 2012

A day with at least 48.5 mm (1.9 in) of rain is expected about once in 2 years. A day with at least 101.0 mm (4.0 in) of rain is expected about once in 100 years.

Rainfall return levels at Valle de Santiago: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	48.5 mm (1.9 in)
5 years	63.8 mm (2.5 in)
10 years	73.4 mm (2.9 in)
25 years	85.0 mm (3.3 in)
50 years	93.2 mm (3.7 in)
100 years	101.0 mm (4.0 in)	Longer than the 71 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, 71 years of values from 1923 to 2012.

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: 106.9 mm (4.2 in) in 1970; 88.9 mm (3.5 in) in 1925; 82.3 mm (3.2 in) in 1984.

Station Changes

No change in the annual mean temperature of this station was found against its neighbours.

Download the Data

Data for Valle de Santiago standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Valle de Santiago 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).