Trancoso Weather Records (MXN00032058)

Record envelope, standing records and threshold days for Trancoso (MXN00032058), Mexico, with 52 years of record.

Key Facts for Trancoso

Trancoso (MXN00032058) is a weather station in Mexico at 22.73 latitude and -102.37 longitude, 2,200 m (7,217 ft) above sea level.
The station reports from 1961 to 2012, 52 years of record.
1,464 records set at Trancoso still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Trancoso set a daily record precipitation of 4.8 mm (0.19 in) on 31 December 2012.

About the Station

Location: Mexico, 22.73 latitude, -102.37 longitude.
Elevation: 2,200 m (7,217 ft).
Period of record: 1961 to 2012, 52 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 Trancoso. 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 Trancoso, 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)	-7.2 C (19.0 F)	n/a	n/a
Feb	30.6 C (87.1 F)	-6.1 C (21.0 F)	n/a	n/a
Mar	37.8 C (100.0 F)	-5.0 C (23.0 F)	n/a	n/a
Apr	34.4 C (93.9 F)	0.0 C (32.0 F)	n/a	n/a
May	36.7 C (98.1 F)	2.8 C (37.0 F)	n/a	n/a
Jun	35.0 C (95.0 F)	0.6 C (33.1 F)	n/a	n/a
Jul	33.9 C (93.0 F)	1.7 C (35.1 F)	n/a	n/a
Aug	33.9 C (93.0 F)	0.6 C (33.1 F)	n/a	n/a
Sep	30.6 C (87.1 F)	0.6 C (33.1 F)	n/a	n/a
Oct	31.7 C (89.1 F)	-1.1 C (30.0 F)	n/a	n/a
Nov	30.6 C (87.1 F)	-6.1 C (21.0 F)	n/a	n/a
Dec	30.6 C (87.1 F)	-13.3 C (8.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Trancoso still stand. 1967 holds the most, with 197.

Standing records at Trancoso by the year they were set
Year set	Standing records
1961	9
1962	6
1963	4
1964	8
1965	13
1966	30
1967	197
1968	143
1969	23
1970	16
1971	8
1972	14
1973	16
1974	9
1975	9
1976	5
1977	9
1978	15
1979	15
1980	13
1981	7
1982	26
1983	25
1984	8
1985	8
1986	5
1987	32
1988	62
1989	50
1990	35
1991	39
1992	67
1993	24
1994	7
1995	40
1996	49
1997	37
1998	34
1999	32
2000	30
2001	23
2002	9
2003	14
2004	15
2005	14
2006	45
2007	31
2009	29
2010	55
2011	22
2012	28

All-Time Record Progression

2 new records

2 all-time records were set at Trancoso between 13 December 1997 and 13 December 1997. Each dot is a new record.

When Trancoso set new all-time records
Date	Kind	Detail
1997-12-13	Record low maximum temperature	Record low maximum temperature -2.2 C (28.0 F)
1997-12-13	Record low minimum temperature	Record low minimum temperature -13.3 C (8.1 F)

Wettest Day of Each Month

May: 69.3 mm (2.7 in)

The wettest day on record for each calendar month at Trancoso. The most was 69.3 mm (2.7 in) on 15 May 1967.

Record daily precipitation for each month at Trancoso
Month	Record daily precipitation (mm)	Date
Jan	37.1 mm (1.5 in)	16 January 1981
Feb	33.8 mm (1.3 in)	2 February 2010
Mar	39.9 mm (1.6 in)	3 March 1968
Apr	35.3 mm (1.4 in)	2 April 1966
May	69.3 mm (2.7 in)	15 May 1967
Jun	62.0 mm (2.4 in)	12 June 1971
Jul	65.5 mm (2.6 in)	2 July 1983
Aug	52.8 mm (2.1 in)	17 August 1968
Sep	61.7 mm (2.4 in)	27 September 1974
Oct	45.2 mm (1.8 in)	9 October 1992
Nov	53.1 mm (2.1 in)	13 November 1992
Dec	57.9 mm (2.3 in)	2 December 1979

Period of Record Coverage

1961 to 2012

51 years of record at Trancoso, 1961 to 2012. 9 years have data for under 90 percent of days and are left out of rankings: 1980, 1981, 1982, 1986, 1993, 1994, 1995, 2003 and others.

Days with data per year at Trancoso
Year	Days with data	Share of year	Complete
1961	365	100%	Yes
1962	365	100%	Yes
1963	365	100%	Yes
1964	366	100%	Yes
1965	365	100%	Yes
1966	364	100%	Yes
1967	365	100%	Yes
1968	363	99%	Yes
1969	365	100%	Yes
1970	362	99%	Yes
1971	365	100%	Yes
1972	366	100%	Yes
1973	365	100%	Yes
1974	365	100%	Yes
1975	365	100%	Yes
1976	366	100%	Yes
1977	334	92%	Yes
1978	365	100%	Yes
1979	365	100%	Yes
1980	245	67%	No
1981	247	68%	No
1982	303	83%	No
1983	365	100%	Yes
1984	366	100%	Yes
1985	334	92%	Yes
1986	212	58%	No
1987	340	93%	Yes
1988	366	100%	Yes
1989	365	100%	Yes
1990	364	100%	Yes
1991	365	100%	Yes
1992	366	100%	Yes
1993	270	74%	No
1994	212	58%	No
1995	271	74%	No
1996	365	100%	Yes
1997	362	99%	Yes
1998	362	99%	Yes
1999	365	100%	Yes
2000	365	100%	Yes
2001	359	98%	Yes
2002	365	100%	Yes
2003	296	81%	No
2004	366	100%	Yes
2005	362	99%	Yes
2006	334	92%	Yes
2007	363	99%	Yes
2009	335	92%	Yes
2010	357	98%	Yes
2011	113	31%	No
2012	356	97%	Yes

Latest Records

Latest records at Trancoso
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
31 December 2012	Trancoso, MX	daily rain	4.8 mm (0.19 in)	2.5 mm (0.10 in)	44 years	20 of 100 (Routine)
27 November 2012	Trancoso, MX	daily low max	12.8 C (55.0 F)	1.1 C (2.0 F)	32 years	17 of 100 (Routine)
24 November 2012	Trancoso, MX	daily rain	16.8 mm (0.7 in)	14.8 mm (0.6 in)	24 years	20 of 100 (Routine)
16 November 2012	Trancoso, MX	daily high min (Tie)	10.0 C (50.0 F)	tie	34 years	3 of 100 (Routine)
25 October 2012	Trancoso, MX	daily high max	28.3 C (82.9 F)	0.5 C (0.9 F)	30 years	15 of 100 (Routine)
24 October 2012	Trancoso, MX	daily high max (Tie)	27.2 C (81.0 F)	tie	11 years	2 of 100 (Routine)
21 October 2012	Trancoso, MX	daily high min (Tie)	12.8 C (55.0 F)	tie	33 years	3 of 100 (Routine)
19 October 2012	Trancoso, MX	daily high max (Tie)	27.8 C (82.0 F)	tie	33 years	3 of 100 (Routine)
6 September 2012	Trancoso, MX	daily high max (Tie)	27.8 C (82.0 F)	tie	30 years	3 of 100 (Routine)
4 August 2012	Trancoso, MX	daily high min (Tie)	13.9 C (57.0 F)	tie	45 years	4 of 100 (Routine)
18 July 2012	Trancoso, MX	daily rain	56.4 mm (2.2 in)	37.1 mm (1.5 in)	44 years	52 of 100 (Notable)
15 June 2012	Trancoso, MX	daily high min (Tie)	13.9 C (57.0 F)	tie	50 years	5 of 100 (Routine)
12 June 2012	Trancoso, MX	daily high min (Tie)	15.0 C (59.0 F)	tie	45 years	4 of 100 (Routine)
2 June 2012	Trancoso, MX	daily high min	16.7 C (62.1 F)	1.1 C (2.0 F)	16 years	14 of 100 (Routine)
1 June 2012	Trancoso, MX	daily high min	16.7 C (62.1 F)	1.1 C (2.0 F)	15 years	14 of 100 (Routine)
31 May 2012	Trancoso, MX	monthly high min	18.9 C (66.0 F)	0.6 C (1.1 F)	10 years	20 of 100 (Routine)
31 May 2012	Trancoso, MX	daily high max	33.9 C (93.0 F)	1.1 C (2.0 F)	32 years	16 of 100 (Routine)
30 May 2012	Trancoso, MX	daily high min	16.7 C (62.1 F)	1.1 C (2.0 F)	30 years	18 of 100 (Routine)
4 May 2012	Trancoso, MX	daily rain (Tie)	1.3 mm (0.05 in)	tie	26 years	3 of 100 (Routine)
3 May 2012	Trancoso, MX	daily high min	16.7 C (62.1 F)	1.7 C (3.1 F)	35 years	22 of 100 (Routine)

Climate Trend

36 complete years, 1961 to 2012

One stripe for each of 36 complete years at Trancoso, 1961 to 2012. Blue stripes are years cooler than the station's own mean of 15.5 C (60.0 F); red stripes are warmer. The coolest year was 1992, at 12.0 C (53.6 F), and the warmest was 1968, at 18.6 C (65.5 F). The strongest colour marks a difference of 3.6 C (6.5 F).

Annual mean temperature at Trancoso as warming stripes, 1961 to 2012
Year	Annual mean temperature	Difference from the station mean
1961	15.5 C	-0.03 C
1962	15.7 C	+0.18 C
1963	15.3 C	-0.23 C
1964	15.1 C	-0.44 C
1965	14.7 C	-0.81 C
1966	14.2 C	-1.36 C
1967	17.9 C	+2.33 C
1968	18.6 C	+3.08 C
1969	15.4 C	-0.11 C
1970	15.3 C	-0.26 C
1971	15.4 C	-0.10 C
1972	15.9 C	+0.35 C
1973	14.9 C	-0.65 C
1974	15.0 C	-0.53 C
1975	15.5 C	-0.09 C
1976	15.2 C	-0.35 C
1978	16.2 C	+0.67 C
1979	16.6 C	+1.03 C
1983	16.7 C	+1.13 C
1984	16.2 C	+0.63 C
1988	12.7 C	-2.87 C
1989	13.4 C	-2.19 C
1991	13.0 C	-2.57 C
1992	12.0 C	-3.53 C
1996	18.1 C	+2.53 C
1997	17.4 C	+1.83 C
1998	17.6 C	+2.01 C
1999	17.0 C	+1.45 C
2000	16.4 C	+0.86 C
2001	16.7 C	+1.20 C
2002	17.0 C	+1.43 C
2004	14.1 C	-1.47 C
2005	14.5 C	-1.06 C
2007	15.2 C	-0.35 C
2010	12.9 C	-2.62 C
2012	16.3 C	+0.75 C

The fitted trend in annual mean temperature here over 1961 to 2012 is -0.05 C (-0.39 to 0.29) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.1 F (-0.7 to 0.5) per decade. The slope is a straight line fitted to 36 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Trancoso
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	-0.05 C (-0.39 to 0.29) per decade	-0.1 F (-0.7 to 0.5) per decade	1961 to 2012	36	Not clearly different from zero
Mean daily maximum	-0.1 C (-0.5 to 0.3) per decade	-0.2 F (-1.0 to 0.6) per decade	1961 to 2012	36	Not clearly different from zero
Mean daily minimum	0.02 C (-0.27 to 0.31) per decade	0.03 F (-0.49 to 0.56) per decade	1961 to 2012	36	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

1961 to 2012

Yearly extremes at Trancoso: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	37.8 C (100.0 F)	1968	31.7 C (89.1 F)	51
Coldest night (TNn)	-13.3 C (8.1 F)	1997	-3.3 C (26.1 F)	51
Wettest day (Rx1day)	69.3 mm (2.7 in)	1967	43.9 mm (1.7 in)	51
Wettest five days (Rx5day)	150.2 mm (5.9 in)	2010	71.2 mm (2.8 in)	51
Longest dry spell (CDD)	156 days	1999	73 days	51

Hottest day (TXx)

The hottest day of the year at Trancoso, 1961 to 2012. The record is 37.8 C (100.0 F) in 1968, marked on the chart; the median year is 31.7 C (89.1 F).

Hottest day (TXx) at Trancoso by year
Year	Hottest day (TXx)
1961	31.7 C (89.1 F)
1962	31.7 C (89.1 F)
1963	31.7 C (89.1 F)
1964	30.6 C (87.1 F)
1965	30.6 C (87.1 F)
1966	31.7 C (89.1 F)
1967	33.9 C (93.0 F)
1968	37.8 C (100.0 F)
1969	30.0 C (86.0 F)
1970	31.7 C (89.1 F)
1971	30.6 C (87.1 F)
1972	31.7 C (89.1 F)
1973	31.7 C (89.1 F)
1974	30.0 C (86.0 F)
1975	31.1 C (88.0 F)
1976	27.8 C (82.0 F)
1977	36.7 C (98.1 F)
1978	31.7 C (89.1 F)
1979	30.6 C (87.1 F)
1980	32.8 C (91.0 F)
1981	30.6 C (87.1 F)
1982	35.0 C (95.0 F)
1983	35.6 C (96.1 F)
1984	30.6 C (87.1 F)
1985	32.8 C (91.0 F)
1986	33.9 C (93.0 F)
1987	28.9 C (84.0 F)
1988	31.7 C (89.1 F)
1989	32.8 C (91.0 F)
1990	33.9 C (93.0 F)
1991	33.9 C (93.0 F)
1992	30.0 C (86.0 F)
1993	30.0 C (86.0 F)
1994	30.0 C (86.0 F)
1995	35.0 C (95.0 F)
1996	35.6 C (96.1 F)
1997	35.0 C (95.0 F)
1998	35.0 C (95.0 F)
1999	34.4 C (93.9 F)
2000	33.3 C (91.9 F)
2001	32.2 C (90.0 F)
2002	33.9 C (93.0 F)
2003	33.9 C (93.0 F)
2004	28.9 C (84.0 F)
2005	28.9 C (84.0 F)
2006	30.6 C (87.1 F)
2007	35.0 C (95.0 F)
2009	30.0 C (86.0 F)
2010	30.6 C (87.1 F)
2011	28.3 C (82.9 F)
2012	33.9 C (93.0 F)

Coldest night (TNn)

The coldest night of the year at Trancoso, 1961 to 2012. The record is -13.3 C (8.1 F) in 1997, marked on the chart; the median year is -3.3 C (26.1 F).

Coldest night (TNn) at Trancoso by year
Year	Coldest night (TNn)
1961	0.6 C (33.1 F)
1962	-2.2 C (28.0 F)
1963	-8.3 C (17.1 F)
1964	-7.2 C (19.0 F)
1965	-5.0 C (23.0 F)
1966	-5.0 C (23.0 F)
1967	-7.2 C (19.0 F)
1968	0.6 C (33.1 F)
1969	0.0 C (32.0 F)
1970	-4.4 C (24.1 F)
1971	0.0 C (32.0 F)
1972	-2.2 C (28.0 F)
1973	-6.1 C (21.0 F)
1974	-3.3 C (26.1 F)
1975	-5.0 C (23.0 F)
1976	-2.2 C (28.0 F)
1977	0.6 C (33.1 F)
1978	-1.1 C (30.0 F)
1979	-1.1 C (30.0 F)
1980	0.6 C (33.1 F)
1981	-3.3 C (26.1 F)
1982	0.0 C (32.0 F)
1983	0.0 C (32.0 F)
1984	-3.3 C (26.1 F)
1985	-5.0 C (23.0 F)
1986	0.6 C (33.1 F)
1987	-2.2 C (28.0 F)
1988	-7.2 C (19.0 F)
1989	-5.0 C (23.0 F)
1990	-6.1 C (21.0 F)
1991	-6.1 C (21.0 F)
1992	-5.0 C (23.0 F)
1993	-3.3 C (26.1 F)
1994	0.0 C (32.0 F)
1995	0.0 C (32.0 F)
1996	0.6 C (33.1 F)
1997	-13.3 C (8.1 F)
1998	-3.3 C (26.1 F)
1999	-6.7 C (19.9 F)
2000	-6.7 C (19.9 F)
2001	-5.0 C (23.0 F)
2002	-1.7 C (28.9 F)
2003	-4.4 C (24.1 F)
2004	-7.2 C (19.0 F)
2005	-3.3 C (26.1 F)
2006	-5.0 C (23.0 F)
2007	-1.1 C (30.0 F)
2009	-1.1 C (30.0 F)
2010	-5.0 C (23.0 F)
2011	-5.0 C (23.0 F)
2012	-0.6 C (30.9 F)

Wettest day (Rx1day)

The wettest day of the year at Trancoso, 1961 to 2012. The record is 69.3 mm (2.7 in) in 1967, marked on the chart; the median year is 43.9 mm (1.7 in).

Wettest day (Rx1day) at Trancoso by year
Year	Wettest day (Rx1day)
1961	27.9 mm (1.1 in)
1962	45.0 mm (1.8 in)
1963	31.0 mm (1.2 in)
1964	35.8 mm (1.4 in)
1965	56.9 mm (2.2 in)
1966	39.9 mm (1.6 in)
1967	69.3 mm (2.7 in)
1968	52.8 mm (2.1 in)
1969	47.8 mm (1.9 in)
1970	60.5 mm (2.4 in)
1971	62.0 mm (2.4 in)
1972	45.0 mm (1.8 in)
1973	44.2 mm (1.7 in)
1974	61.7 mm (2.4 in)
1975	45.5 mm (1.8 in)
1976	39.4 mm (1.6 in)
1977	38.9 mm (1.5 in)
1978	42.9 mm (1.7 in)
1979	57.9 mm (2.3 in)
1980	25.1 mm (1.0 in)
1981	45.2 mm (1.8 in)
1982	29.0 mm (1.1 in)
1983	65.5 mm (2.6 in)
1984	19.8 mm (0.8 in)
1985	52.3 mm (2.1 in)
1986	50.3 mm (2.0 in)
1987	52.3 mm (2.1 in)
1988	37.3 mm (1.5 in)
1989	56.4 mm (2.2 in)
1990	38.4 mm (1.5 in)
1991	58.9 mm (2.3 in)
1992	53.1 mm (2.1 in)
1993	15.7 mm (0.6 in)
1994	40.6 mm (1.6 in)
1995	35.1 mm (1.4 in)
1996	24.9 mm (1.0 in)
1997	19.6 mm (0.8 in)
1998	47.2 mm (1.9 in)
1999	26.4 mm (1.0 in)
2000	19.8 mm (0.8 in)
2001	41.9 mm (1.6 in)
2002	39.9 mm (1.6 in)
2003	46.5 mm (1.8 in)
2004	43.9 mm (1.7 in)
2005	45.0 mm (1.8 in)
2006	31.8 mm (1.3 in)
2007	27.4 mm (1.1 in)
2009	35.6 mm (1.4 in)
2010	53.3 mm (2.1 in)
2011	6.9 mm (0.27 in)
2012	56.4 mm (2.2 in)

Wettest five days (Rx5day)

The wettest five days of the year at Trancoso, 1961 to 2012. The record is 150.2 mm (5.9 in) in 2010, marked on the chart; the median year is 71.2 mm (2.8 in).

Wettest five days (Rx5day) at Trancoso by year
Year	Wettest five days (Rx5day)
1961	41.1 mm (1.6 in)
1962	48.3 mm (1.9 in)
1963	52.3 mm (2.1 in)
1964	75.4 mm (3.0 in)
1965	56.9 mm (2.2 in)
1966	60.7 mm (2.4 in)
1967	91.9 mm (3.6 in)
1968	103.9 mm (4.1 in)
1969	55.4 mm (2.2 in)
1970	98.8 mm (3.9 in)
1971	106.2 mm (4.2 in)
1972	86.2 mm (3.4 in)
1973	108.0 mm (4.3 in)
1974	66.0 mm (2.6 in)
1975	124.0 mm (4.9 in)
1976	134.1 mm (5.3 in)
1977	95.8 mm (3.8 in)
1978	88.9 mm (3.5 in)
1979	78.0 mm (3.1 in)
1980	25.1 mm (1.0 in)
1981	60.5 mm (2.4 in)
1982	54.6 mm (2.1 in)
1983	104.4 mm (4.1 in)
1984	44.0 mm (1.7 in)
1985	73.5 mm (2.9 in)
1986	76.0 mm (3.0 in)
1987	96.6 mm (3.8 in)
1988	96.7 mm (3.8 in)
1989	63.3 mm (2.5 in)
1990	63.5 mm (2.5 in)
1991	124.0 mm (4.9 in)
1992	72.9 mm (2.9 in)
1993	32.3 mm (1.3 in)
1994	109.2 mm (4.3 in)
1995	40.3 mm (1.6 in)
1996	45.0 mm (1.8 in)
1997	48.0 mm (1.9 in)
1998	111.8 mm (4.4 in)
1999	48.2 mm (1.9 in)
2000	47.0 mm (1.9 in)
2001	59.6 mm (2.3 in)
2002	83.4 mm (3.3 in)
2003	77.3 mm (3.0 in)
2004	70.3 mm (2.8 in)
2005	46.8 mm (1.8 in)
2006	45.8 mm (1.8 in)
2007	52.6 mm (2.1 in)
2009	71.2 mm (2.8 in)
2010	150.2 mm (5.9 in)
2011	9.7 mm (0.38 in)
2012	75.2 mm (3.0 in)

Longest dry spell (CDD)

The longest dry spell of the year at Trancoso, 1961 to 2012. The record is 156 days in 1999, marked on the chart; the median year is 73 days.

Longest dry spell (CDD) at Trancoso by year
Year	Longest dry spell (CDD)
1961	95 days
1962	70 days
1963	101 days
1964	73 days
1965	54 days
1966	67 days
1967	51 days
1968	45 days
1969	100 days
1970	105 days
1971	144 days
1972	48 days
1973	72 days
1974	73 days
1975	71 days
1976	77 days
1977	97 days
1978	92 days
1979	110 days
1980	48 days
1981	31 days
1982	78 days
1983	73 days
1984	102 days
1985	84 days
1986	53 days
1987	59 days
1988	53 days
1989	87 days
1990	39 days
1991	91 days
1992	34 days
1993	44 days
1994	72 days
1995	89 days
1996	71 days
1997	46 days
1998	90 days
1999	156 days
2000	73 days
2001	57 days
2002	50 days
2003	57 days
2004	63 days
2005	124 days
2006	109 days
2007	60 days
2009	90 days
2010	107 days
2011	90 days
2012	81 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

22 years with a frost

Across 22 years with a frost, the median last spring frost at Trancoso falls on 25 February and the median first autumn frost on 3 December, which leaves a median of 272 days between them.

Frost dates and growing season at Trancoso
Measure	Median, all years	Earliest period	Recent period (1963 to 2010)	Recent against earliest	Fitted trend
Last spring frost	25 February	n/a	25 February	n/a	n/a
First autumn frost	3 December	n/a	3 December	n/a	n/a
Growing days	272 days	n/a	272 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

43 years, 1961 to 2012

A day with at least 44.1 mm (1.7 in) of rain is expected about once in 2 years. A day with at least 71.3 mm (2.8 in) of rain is expected about once in 100 years.

Rainfall return levels at Trancoso: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	44.1 mm (1.7 in)
5 years	55.5 mm (2.2 in)
10 years	60.9 mm (2.4 in)
25 years	66.1 mm (2.6 in)
50 years	69.0 mm (2.7 in)	Longer than the 43 years of record
100 years	71.3 mm (2.8 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 1961 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: 69.3 mm (2.7 in) in 1967; 65.5 mm (2.6 in) in 1983; 62.0 mm (2.4 in) in 1971.

Download the Data

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