Charcas (Smn) Weather Records (MXN00024158)

Record envelope, standing records and threshold days for Charcas (Smn) (MXN00024158), Mexico, with 71 years of record.

Key Facts for Charcas (Smn)

Charcas (Smn) (MXN00024158) is a weather station in Mexico at 23.12 latitude and -101.10 longitude, 2,021 m (6,630 ft) above sea level.
The station reports from 1941 to 2011, 71 years of record.
1,464 records set at Charcas (Smn) still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Charcas (Smn) tied a daily record high maximum temperature of 35.0 C (95.0 F) on 15 June 2011.

About the Station

Location: Mexico, 23.12 latitude, -101.10 longitude.
Elevation: 2,021 m (6,630 ft).
Period of record: 1941 to 2011, 71 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 Charcas (Smn). 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 Charcas (Smn), with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	38.3 C (100.9 F)	-9.4 C (15.1 F)	n/a	n/a
Feb	40.0 C (104.0 F)	-5.0 C (23.0 F)	n/a	n/a
Mar	40.0 C (104.0 F)	-8.3 C (17.1 F)	n/a	n/a
Apr	40.0 C (104.0 F)	0.0 C (32.0 F)	n/a	n/a
May	42.8 C (109.0 F)	0.0 C (32.0 F)	n/a	n/a
Jun	40.0 C (104.0 F)	0.0 C (32.0 F)	n/a	n/a
Jul	38.9 C (102.0 F)	0.0 C (32.0 F)	n/a	n/a
Aug	38.9 C (102.0 F)	0.0 C (32.0 F)	n/a	n/a
Sep	37.8 C (100.0 F)	0.0 C (32.0 F)	n/a	n/a
Oct	37.8 C (100.0 F)	-3.3 C (26.1 F)	n/a	n/a
Nov	37.8 C (100.0 F)	-5.0 C (23.0 F)	n/a	n/a
Dec	35.6 C (96.1 F)	-7.2 C (19.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Charcas (Smn) still stand. 1950 holds the most, with 166.

Standing records at Charcas (Smn) by the year they were set
Year set	Standing records
1941	22
1942	17
1943	42
1944	28
1945	11
1946	11
1947	69
1948	13
1949	18
1950	166
1951	134
1952	68
1953	20
1954	15
1955	25
1956	8
1957	8
1959	28
1960	51
1962	10
1963	29
1964	34
1965	43
1966	35
1967	68
1968	38
1969	26
1970	59
1971	28
1972	21
1973	30
1974	30
1975	29
1976	61
1996	32
1997	61
1998	7
1999	7
2000	3
2001	2
2002	11
2003	3
2004	7
2005	4
2006	4
2007	1
2008	9
2009	2
2010	14
2011	2

All-Time Record Progression

2 new records

2 all-time records were set at Charcas (Smn) between 22 May 1976 and 14 August 2002. Each dot is a new record.

When Charcas (Smn) set new all-time records
Date	Kind	Detail
1976-05-22	Record high minimum temperature	Record high minimum temperature 25.6 C (78.1 F)
2002-08-14	Record daily precipitation	Record daily precipitation 116.8 mm (4.6 in)

Wettest Day of Each Month

Aug: 116.8 mm (4.6 in)

The wettest day on record for each calendar month at Charcas (Smn). The most was 116.8 mm (4.6 in) on 14 August 2002.

Record daily precipitation for each month at Charcas (Smn)
Month	Record daily precipitation (mm)	Date
Jan	21.8 mm (0.9 in)	19 January 1966
Feb	45.0 mm (1.8 in)	26 February 2005
Mar	34.8 mm (1.4 in)	10 March 1966
Apr	35.8 mm (1.4 in)	25 April 1963
May	79.0 mm (3.1 in)	11 May 2006
Jun	58.9 mm (2.3 in)	30 June 1947
Jul	104.4 mm (4.1 in)	15 July 1949
Aug	116.8 mm (4.6 in)	14 August 2002
Sep	77.5 mm (3.1 in)	7 September 1999
Oct	63.8 mm (2.5 in)	17 October 1948
Nov	25.9 mm (1.0 in)	30 November 2009
Dec	49.3 mm (1.9 in)	10 December 1974

Period of Record Coverage

1941 to 2011

50 years of record at Charcas (Smn), 1941 to 2011. 10 years have data for under 90 percent of days and are left out of rankings: 1951, 1957, 1959, 1962, 1973, 1974, 1975, 1976 and others.

Days with data per year at Charcas (Smn)
Year	Days with data	Share of year	Complete
1941	365	100%	Yes
1942	365	100%	Yes
1943	365	100%	Yes
1944	366	100%	Yes
1945	365	100%	Yes
1946	334	92%	Yes
1947	365	100%	Yes
1948	366	100%	Yes
1949	364	100%	Yes
1950	365	100%	Yes
1951	316	87%	No
1952	353	96%	Yes
1953	329	90%	Yes
1954	364	100%	Yes
1955	365	100%	Yes
1956	366	100%	Yes
1957	56	15%	No
1959	90	25%	No
1960	362	99%	Yes
1962	305	84%	No
1963	360	99%	Yes
1964	363	99%	Yes
1965	362	99%	Yes
1966	365	100%	Yes
1967	359	98%	Yes
1968	365	100%	Yes
1969	332	91%	Yes
1970	365	100%	Yes
1971	364	100%	Yes
1972	366	100%	Yes
1973	242	66%	No
1974	324	89%	No
1975	203	56%	No
1976	177	48%	No
1996	359	98%	Yes
1997	358	98%	Yes
1998	302	83%	No
1999	334	92%	Yes
2000	366	100%	Yes
2001	365	100%	Yes
2002	365	100%	Yes
2003	365	100%	Yes
2004	366	100%	Yes
2005	365	100%	Yes
2006	364	100%	Yes
2007	363	99%	Yes
2008	364	99%	Yes
2009	364	100%	Yes
2010	360	99%	Yes
2011	177	48%	No

Latest Records

Latest records at Charcas (Smn)
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 June 2011	Charcas (Smn), MX	daily high max (Tie)	35.0 C (95.0 F)	tie	60 years	6 of 100 (Routine)
14 June 2011	Charcas (Smn), MX	daily high max	36.7 C (98.1 F)	1.1 C (2.0 F)	44 years	22 of 100 (Routine)
23 May 2011	Charcas (Smn), MX	daily high max	40.0 C (104.0 F)	1.7 C (3.1 F)	68 years	31 of 100 (Routine)
3 May 2011	Charcas (Smn), MX	daily low max (Tie)	20.0 C (68.0 F)	tie	40 years	4 of 100 (Routine)
26 April 2011	Charcas (Smn), MX	daily high max (Tie)	35.6 C (96.1 F)	tie	45 years	5 of 100 (Routine)
9 February 2011	Charcas (Smn), MX	daily low min (Tie)	0.0 C (32.0 F)	tie	56 years	5 of 100 (Routine)
8 February 2011	Charcas (Smn), MX	daily low min (Tie)	0.0 C (32.0 F)	tie	60 years	6 of 100 (Routine)
13 January 2011	Charcas (Smn), MX	daily low max (Tie)	10.0 C (50.0 F)	tie	8 years	2 of 100 (Routine)
11 December 2010	Charcas (Smn), MX	daily low min (Tie)	-2.2 C (28.0 F)	tie	1 year	1 of 100 (Routine)
10 December 2010	Charcas (Smn), MX	daily low min	-1.1 C (30.0 F)	1.1 C (2.0 F)	65 years	29 of 100 (Routine)
8 November 2010	Charcas (Smn), MX	daily low min	-2.2 C (28.0 F)	2.2 C (4.0 F)	64 years	32 of 100 (Routine)
7 November 2010	Charcas (Smn), MX	daily low min	-2.2 C (28.0 F)	2.2 C (4.0 F)	60 years	31 of 100 (Routine)
6 November 2010	Charcas (Smn), MX	daily low min (Tie)	-1.1 C (30.0 F)	tie	5 years	2 of 100 (Routine)
5 November 2010	Charcas (Smn), MX	daily low min (Tie)	0.0 C (32.0 F)	tie	59 years	6 of 100 (Routine)
18 September 2010	Charcas (Smn), MX	daily rain	15.7 mm (0.6 in)	4.8 mm (0.19 in)	4 years	12 of 100 (Routine)
29 July 2010	Charcas (Smn), MX	daily low max	20.6 C (69.1 F)	2.2 C (4.0 F)	36 years	23 of 100 (Routine)
28 July 2010	Charcas (Smn), MX	daily low max (Tie)	22.8 C (73.0 F)	tie	7 years	2 of 100 (Routine)
26 July 2010	Charcas (Smn), MX	daily low max	20.6 C (69.1 F)	2.2 C (4.0 F)	57 years	30 of 100 (Routine)
26 July 2010	Charcas (Smn), MX	daily rain	16.3 mm (0.6 in)	9.4 mm (0.37 in)	4 years	16 of 100 (Routine)
24 July 2010	Charcas (Smn), MX	daily low max (Tie)	22.8 C (73.0 F)	tie	57 years	6 of 100 (Routine)

Climate Trend

35 complete years, 1941 to 2010

One stripe for each of 35 complete years at Charcas (Smn), 1941 to 2010. Blue stripes are years cooler than the station's own mean of 17.6 C (63.6 F); red stripes are warmer. The coolest year was 1997, at 13.5 C (56.4 F), and the warmest was 1952, at 20.1 C (68.2 F). The strongest colour marks a difference of 4.1 C (7.4 F).

Annual mean temperature at Charcas (Smn) as warming stripes, 1941 to 2010
Year	Annual mean temperature	Difference from the station mean
1941	18.8 C	+1.17 C
1942	18.6 C	+0.97 C
1943	18.5 C	+0.92 C
1944	17.3 C	-0.25 C
1945	17.7 C	+0.15 C
1947	17.1 C	-0.49 C
1948	18.1 C	+0.49 C
1949	17.8 C	+0.22 C
1952	20.1 C	+2.55 C
1954	18.8 C	+1.20 C
1955	18.2 C	+0.59 C
1956	17.4 C	-0.19 C
1960	16.3 C	-1.26 C
1963	17.4 C	-0.22 C
1964	17.9 C	+0.36 C
1965	18.1 C	+0.48 C
1966	18.3 C	+0.72 C
1967	19.2 C	+1.65 C
1968	17.4 C	-0.14 C
1970	17.1 C	-0.50 C
1971	18.3 C	+0.70 C
1972	18.1 C	+0.52 C
1996	13.7 C	-3.93 C
1997	13.5 C	-4.04 C
2000	17.7 C	+0.07 C
2001	17.2 C	-0.38 C
2002	17.2 C	-0.41 C
2003	17.6 C	-0.03 C
2004	16.8 C	-0.74 C
2005	17.8 C	+0.21 C
2006	17.6 C	-0.01 C
2007	17.5 C	-0.12 C
2008	17.3 C	-0.31 C
2009	18.0 C	+0.42 C
2010	17.1 C	-0.51 C

The annual mean temperature here has fallen by 0.21 C (0.05 to 0.37) per decade over 1941 to 2010. In Fahrenheit: 0.4 F (0.1 to 0.7) per decade. The slope is a straight line fitted to 35 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Charcas (Smn)
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	-0.21 C (-0.37 to -0.04) per decade	-0.4 F (-0.7 to -0.1) per decade	1941 to 2010	35	Fall
Mean daily maximum	-0.26 C (-0.49 to -0.03) per decade	-0.5 F (-0.9 to -0.1) per decade	1941 to 2010	35	Fall
Mean daily minimum	-0.15 C (-0.31 to 0.01) per decade	-0.27 F (-0.57 to 0.02) per decade	1941 to 2010	35	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 2011

Yearly extremes at Charcas (Smn): the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	42.8 C (109.0 F)	1943	36.7 C (98.1 F)	50
Coldest night (TNn)	-9.4 C (15.1 F)	1955	-2.7 C (27.1 F)	50
Wettest day (Rx1day)	116.8 mm (4.6 in)	2002	47.5 mm (1.9 in)	51
Wettest five days (Rx5day)	154.3 mm (6.1 in)	2010	78.5 mm (3.1 in)	51
Longest dry spell (CDD)	126 days	1969	59 days	51

Hottest day (TXx)

The hottest day of the year at Charcas (Smn), 1941 to 2011. The record is 42.8 C (109.0 F) in 1943, marked on the chart; the median year is 36.7 C (98.1 F).

Hottest day (TXx) at Charcas (Smn) by year
Year	Hottest day (TXx)
1941	34.4 C (93.9 F)
1942	34.4 C (93.9 F)
1943	42.8 C (109.0 F)
1944	38.9 C (102.0 F)
1945	31.7 C (89.1 F)
1946	33.9 C (93.0 F)
1947	37.8 C (100.0 F)
1948	37.8 C (100.0 F)
1949	39.4 C (102.9 F)
1950	37.8 C (100.0 F)
1951	40.0 C (104.0 F)
1952	38.9 C (102.0 F)
1953	38.9 C (102.0 F)
1954	37.8 C (100.0 F)
1955	38.9 C (102.0 F)
1956	35.0 C (95.0 F)
1957	26.7 C (80.1 F)
1958	n/a
1959	31.7 C (89.1 F)
1960	36.7 C (98.1 F)
1962	35.6 C (96.1 F)
1963	37.8 C (100.0 F)
1964	35.6 C (96.1 F)
1965	37.8 C (100.0 F)
1966	37.8 C (100.0 F)
1967	38.9 C (102.0 F)
1968	37.8 C (100.0 F)
1969	37.8 C (100.0 F)
1970	35.6 C (96.1 F)
1971	35.6 C (96.1 F)
1972	35.6 C (96.1 F)
1973	33.9 C (93.0 F)
1974	31.7 C (89.1 F)
1975	31.7 C (89.1 F)
1976	36.7 C (98.1 F)
1996	30.6 C (87.1 F)
1997	26.7 C (80.1 F)
1998	36.7 C (98.1 F)
1999	35.0 C (95.0 F)
2000	35.0 C (95.0 F)
2001	35.0 C (95.0 F)
2002	36.7 C (98.1 F)
2003	36.7 C (98.1 F)
2004	35.0 C (95.0 F)
2005	36.7 C (98.1 F)
2006	38.9 C (102.0 F)
2007	35.0 C (95.0 F)
2008	36.7 C (98.1 F)
2009	38.9 C (102.0 F)
2010	37.8 C (100.0 F)
2011	40.0 C (104.0 F)

Coldest night (TNn)

The coldest night of the year at Charcas (Smn), 1941 to 2011. The record is -9.4 C (15.1 F) in 1955, marked on the chart; the median year is -2.7 C (27.1 F).

Coldest night (TNn) at Charcas (Smn) by year
Year	Coldest night (TNn)
1941	-5.6 C (21.9 F)
1942	-8.3 C (17.1 F)
1943	-4.4 C (24.1 F)
1944	-6.1 C (21.0 F)
1945	0.0 C (32.0 F)
1946	0.0 C (32.0 F)
1947	-0.6 C (30.9 F)
1948	-0.6 C (30.9 F)
1949	-1.7 C (28.9 F)
1950	0.0 C (32.0 F)
1951	0.0 C (32.0 F)
1952	-2.2 C (28.0 F)
1953	-3.3 C (26.1 F)
1954	-0.6 C (30.9 F)
1955	-9.4 C (15.1 F)
1956	-7.2 C (19.0 F)
1957	-5.0 C (23.0 F)
1958	n/a
1959	3.9 C (39.0 F)
1960	-4.4 C (24.1 F)
1962	0.0 C (32.0 F)
1963	-5.0 C (23.0 F)
1964	0.0 C (32.0 F)
1965	-4.4 C (24.1 F)
1966	-5.0 C (23.0 F)
1967	-9.4 C (15.1 F)
1968	0.0 C (32.0 F)
1969	-6.1 C (21.0 F)
1970	-6.1 C (21.0 F)
1971	0.0 C (32.0 F)
1972	-5.6 C (21.9 F)
1973	0.0 C (32.0 F)
1974	0.6 C (33.1 F)
1975	0.6 C (33.1 F)
1976	-5.0 C (23.0 F)
1996	-6.1 C (21.0 F)
1997	-7.2 C (19.0 F)
1998	-2.2 C (28.0 F)
1999	-4.4 C (24.1 F)
2000	-2.2 C (28.0 F)
2001	-1.1 C (30.0 F)
2002	-4.4 C (24.1 F)
2003	-4.4 C (24.1 F)
2004	-4.4 C (24.1 F)
2005	-2.2 C (28.0 F)
2006	-4.4 C (24.1 F)
2007	0.0 C (32.0 F)
2008	-3.3 C (26.1 F)
2009	-2.2 C (28.0 F)
2010	-2.2 C (28.0 F)
2011	0.0 C (32.0 F)

Wettest day (Rx1day)

The wettest day of the year at Charcas (Smn), 1941 to 2011. The record is 116.8 mm (4.6 in) in 2002, marked on the chart; the median year is 47.5 mm (1.9 in).

Wettest day (Rx1day) at Charcas (Smn) by year
Year	Wettest day (Rx1day)
1941	35.8 mm (1.4 in)
1942	32.3 mm (1.3 in)
1943	50.8 mm (2.0 in)
1944	54.1 mm (2.1 in)
1945	45.0 mm (1.8 in)
1946	35.8 mm (1.4 in)
1947	58.9 mm (2.3 in)
1948	63.8 mm (2.5 in)
1949	104.4 mm (4.1 in)
1950	57.9 mm (2.3 in)
1951	33.8 mm (1.3 in)
1952	56.9 mm (2.2 in)
1953	40.9 mm (1.6 in)
1954	37.8 mm (1.5 in)
1955	33.8 mm (1.3 in)
1956	23.9 mm (0.9 in)
1957	21.8 mm (0.9 in)
1958	25.9 mm (1.0 in)
1959	26.9 mm (1.1 in)
1960	24.9 mm (1.0 in)
1962	27.9 mm (1.1 in)
1963	47.0 mm (1.9 in)
1964	59.9 mm (2.4 in)
1965	63.0 mm (2.5 in)
1966	34.8 mm (1.4 in)
1967	38.9 mm (1.5 in)
1968	55.9 mm (2.2 in)
1969	11.9 mm (0.5 in)
1970	56.9 mm (2.2 in)
1971	52.8 mm (2.1 in)
1972	34.8 mm (1.4 in)
1973	49.8 mm (2.0 in)
1974	49.3 mm (1.9 in)
1975	79.8 mm (3.1 in)
1976	20.8 mm (0.8 in)
1996	45.0 mm (1.8 in)
1997	62.5 mm (2.5 in)
1998	52.3 mm (2.1 in)
1999	77.5 mm (3.1 in)
2000	33.3 mm (1.3 in)
2001	53.8 mm (2.1 in)
2002	116.8 mm (4.6 in)
2003	47.5 mm (1.9 in)
2004	84.3 mm (3.3 in)
2005	45.0 mm (1.8 in)
2006	79.0 mm (3.1 in)
2007	50.8 mm (2.0 in)
2008	49.8 mm (2.0 in)
2009	42.2 mm (1.7 in)
2010	64.8 mm (2.6 in)
2011	27.4 mm (1.1 in)

Wettest five days (Rx5day)

The wettest five days of the year at Charcas (Smn), 1941 to 2011. The record is 154.3 mm (6.1 in) in 2010, marked on the chart; the median year is 78.5 mm (3.1 in).

Wettest five days (Rx5day) at Charcas (Smn) by year
Year	Wettest five days (Rx5day)
1941	73.1 mm (2.9 in)
1942	75.7 mm (3.0 in)
1943	61.2 mm (2.4 in)
1944	110.1 mm (4.3 in)
1945	45.0 mm (1.8 in)
1946	53.5 mm (2.1 in)
1947	58.9 mm (2.3 in)
1948	105.4 mm (4.1 in)
1949	120.2 mm (4.7 in)
1950	68.6 mm (2.7 in)
1951	47.8 mm (1.9 in)
1952	106.7 mm (4.2 in)
1953	81.3 mm (3.2 in)
1954	57.1 mm (2.2 in)
1955	52.4 mm (2.1 in)
1956	38.2 mm (1.5 in)
1957	43.4 mm (1.7 in)
1958	66.8 mm (2.6 in)
1959	59.4 mm (2.3 in)
1960	52.6 mm (2.1 in)
1962	49.2 mm (1.9 in)
1963	59.2 mm (2.3 in)
1964	125.1 mm (4.9 in)
1965	103.4 mm (4.1 in)
1966	74.7 mm (2.9 in)
1967	134.8 mm (5.3 in)
1968	105.4 mm (4.1 in)
1969	22.5 mm (0.9 in)
1970	137.5 mm (5.4 in)
1971	134.0 mm (5.3 in)
1972	79.1 mm (3.1 in)
1973	140.2 mm (5.5 in)
1974	72.2 mm (2.8 in)
1975	109.6 mm (4.3 in)
1976	75.2 mm (3.0 in)
1996	83.5 mm (3.3 in)
1997	78.8 mm (3.1 in)
1998	78.5 mm (3.1 in)
1999	115.7 mm (4.6 in)
2000	58.5 mm (2.3 in)
2001	123.8 mm (4.9 in)
2002	126.8 mm (5.0 in)
2003	56.1 mm (2.2 in)
2004	96.5 mm (3.8 in)
2005	70.7 mm (2.8 in)
2006	109.2 mm (4.3 in)
2007	130.4 mm (5.1 in)
2008	86.0 mm (3.4 in)
2009	112.7 mm (4.4 in)
2010	154.3 mm (6.1 in)
2011	54.4 mm (2.1 in)

Longest dry spell (CDD)

The longest dry spell of the year at Charcas (Smn), 1941 to 2011. The record is 126 days in 1969, marked on the chart; the median year is 59 days.

Longest dry spell (CDD) at Charcas (Smn) by year
Year	Longest dry spell (CDD)
1941	41 days
1942	47 days
1943	42 days
1944	31 days
1945	37 days
1946	41 days
1947	86 days
1948	95 days
1949	85 days
1950	65 days
1951	78 days
1952	61 days
1953	56 days
1954	33 days
1955	75 days
1956	59 days
1957	40 days
1958	49 days
1959	39 days
1960	106 days
1962	35 days
1963	66 days
1964	47 days
1965	58 days
1966	67 days
1967	47 days
1968	66 days
1969	126 days
1970	78 days
1971	76 days
1972	60 days
1973	40 days
1974	66 days
1975	82 days
1976	58 days
1996	34 days
1997	33 days
1998	112 days
1999	116 days
2000	57 days
2001	68 days
2002	50 days
2003	59 days
2004	78 days
2005	42 days
2006	57 days
2007	45 days
2008	75 days
2009	76 days
2010	65 days
2011	121 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

27 years with a frost

Across 27 years with a frost, the median last spring frost at Charcas (Smn) falls on 25 February and the median first autumn frost on 22 November, which leaves a median of 261 days between them.

Fitted over all years, the growing season changes by +4.3 days per decade at this station.

Frost dates and growing season at Charcas (Smn)
Measure	Median, all years	Earliest period	Recent period (1942 to 2010)	Recent against earliest	Fitted trend
Last spring frost	25 February	n/a	25 February	n/a	-2.7 days per decade
First autumn frost	22 November	n/a	22 November	n/a	+1.7 days per decade
Growing days	261 days	n/a	261 days	n/a	+4.3 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

45 years, 1941 to 2010

A day with at least 46.3 mm (1.8 in) of rain is expected about once in 2 years. A day with at least 112.0 mm (4.4 in) of rain is expected about once in 100 years.

Rainfall return levels at Charcas (Smn): the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	46.3 mm (1.8 in)
5 years	64.3 mm (2.5 in)
10 years	76.1 mm (3.0 in)
25 years	90.8 mm (3.6 in)
50 years	101.5 mm (4.0 in)	Longer than the 45 years of record
100 years	112.0 mm (4.4 in)	Longer than the 45 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, 45 years of values from 1941 to 2010.

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: 116.8 mm (4.6 in) in 2002; 104.4 mm (4.1 in) in 1949; 84.3 mm (3.3 in) in 2004.

Download the Data

Data for Charcas (Smn) standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Charcas (Smn) 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).