La Union Weather Records (MXN00012052)

Record envelope, standing records and threshold days for La Union (MXN00012052), Mexico, with 89 years of record.

Key Facts for La Union

La Union (MXN00012052) is a weather station in Mexico at 17.98 latitude and -101.88 longitude, 60 m (196 ft) above sea level.
The station reports from 1925 to 2013, 89 years of record.
1,464 records set at La Union still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
La Union tied a daily record low maximum temperature of 30.0 C (86.0 F) on 2 May 2013.

About the Station

Location: Mexico, 17.98 latitude, -101.88 longitude.
Elevation: 60 m (196 ft).
Period of record: 1925 to 2013, 89 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 La Union. 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 La Union, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	41.7 C (107.1 F)	11.1 C (52.0 F)	n/a	n/a
Feb	42.8 C (109.0 F)	8.9 C (48.0 F)	n/a	n/a
Mar	43.3 C (109.9 F)	7.8 C (46.0 F)	n/a	n/a
Apr	43.9 C (111.0 F)	8.3 C (46.9 F)	n/a	n/a
May	43.9 C (111.0 F)	12.8 C (55.0 F)	n/a	n/a
Jun	43.3 C (109.9 F)	15.6 C (60.1 F)	n/a	n/a
Jul	41.7 C (107.1 F)	16.7 C (62.1 F)	n/a	n/a
Aug	42.8 C (109.0 F)	16.7 C (62.1 F)	n/a	n/a
Sep	41.7 C (107.1 F)	17.2 C (63.0 F)	n/a	n/a
Oct	41.7 C (107.1 F)	16.1 C (61.0 F)	n/a	n/a
Nov	42.8 C (109.0 F)	11.7 C (53.1 F)	n/a	n/a
Dec	43.3 C (109.9 F)	12.2 C (54.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at La Union still stand. 1933 holds the most, with 216.

Standing records at La Union by the year they were set
Year set	Standing records
1925	34
1926	89
1927	5
1928	29
1929	14
1930	32
1931	19
1932	9
1933	216
1934	94
1935	130
1936	153
1937	11
1954	8
1955	14
1956	11
1957	15
1958	37
1959	27
1960	16
1961	6
1962	17
1963	43
1964	13
1965	29
1966	17
1967	17
1968	27
1969	34
1970	17
1971	14
1972	5
1973	27
1974	13
1975	11
1976	4
1977	1
1978	3
1979	5
1980	2
1981	4
1982	1
1983	14
1984	16
1985	2
1986	10
1987	7
1988	9
1989	5
1990	4
1991	8
1992	23
1993	1
1994	3
1995	9
1996	6
1997	10
1998	2
1999	7
2000	2
2001	6
2002	1
2003	6
2004	4
2005	2
2006	5
2007	7
2008	7
2009	4
2010	6
2011	2
2012	3

All-Time Record Progression

3 new records

3 all-time records were set at La Union between 22 June 1973 and 14 September 1984. Each dot is a new record.

When La Union set new all-time records
Date	Kind	Detail
1973-06-22	Record daily precipitation	Record daily precipitation 211.8 mm (8.3 in)
1976-10-07	Record daily precipitation	Record daily precipitation 319.8 mm (12.6 in)
1984-09-14	Record daily precipitation	Record daily precipitation 394.5 mm (15.5 in)

Wettest Day of Each Month

Sep: 394.5 mm (15.5 in)

The wettest day on record for each calendar month at La Union. The most was 394.5 mm (15.5 in) on 14 September 1984.

Record daily precipitation for each month at La Union
Month	Record daily precipitation (mm)	Date
Jan	114.8 mm (4.5 in)	23 January 1980
Feb	99.8 mm (3.9 in)	3 February 2010
Mar	57.4 mm (2.3 in)	5 March 1968
Apr	45.5 mm (1.8 in)	4 April 1966
May	308.9 mm (12.2 in)	26 May 1983
Jun	211.8 mm (8.3 in)	22 June 1973
Jul	121.9 mm (4.8 in)	13 July 1983
Aug	185.4 mm (7.3 in)	28 August 1981
Sep	394.5 mm (15.5 in)	14 September 1984
Oct	319.8 mm (12.6 in)	7 October 1976
Nov	152.9 mm (6.0 in)	3 November 2002
Dec	79.8 mm (3.1 in)	27 December 1974

Period of Record Coverage

1925 to 2013

73 years of record at La Union, 1925 to 2013. 11 years have data for under 90 percent of days and are left out of rankings: 1925, 1926, 1927, 1937, 1954, 1959, 1961, 1964 and others.

Days with data per year at La Union
Year	Days with data	Share of year	Complete
1925	152	42%	No
1926	237	65%	No
1927	259	71%	No
1928	366	100%	Yes
1929	365	100%	Yes
1930	362	99%	Yes
1931	363	99%	Yes
1932	366	100%	Yes
1933	365	100%	Yes
1934	333	91%	Yes
1935	365	100%	Yes
1936	365	100%	Yes
1937	31	8%	No
1954	272	75%	No
1955	365	100%	Yes
1956	366	100%	Yes
1957	365	100%	Yes
1958	364	100%	Yes
1959	303	83%	No
1960	366	100%	Yes
1961	325	89%	No
1962	365	100%	Yes
1963	334	92%	Yes
1964	305	83%	No
1965	365	100%	Yes
1966	361	99%	Yes
1967	365	100%	Yes
1968	366	100%	Yes
1969	354	97%	Yes
1970	365	100%	Yes
1971	365	100%	Yes
1972	366	100%	Yes
1973	365	100%	Yes
1974	365	100%	Yes
1975	365	100%	Yes
1976	356	97%	Yes
1977	365	100%	Yes
1978	351	96%	Yes
1979	365	100%	Yes
1980	362	99%	Yes
1981	335	92%	Yes
1982	361	99%	Yes
1983	365	100%	Yes
1984	366	100%	Yes
1985	365	100%	Yes
1986	360	99%	Yes
1987	365	100%	Yes
1988	360	98%	Yes
1989	365	100%	Yes
1990	365	100%	Yes
1991	365	100%	Yes
1992	366	100%	Yes
1993	365	100%	Yes
1994	365	100%	Yes
1995	365	100%	Yes
1996	366	100%	Yes
1997	365	100%	Yes
1998	365	100%	Yes
1999	361	99%	Yes
2000	366	100%	Yes
2001	365	100%	Yes
2002	365	100%	Yes
2003	365	100%	Yes
2004	335	92%	Yes
2005	365	100%	Yes
2006	365	100%	Yes
2007	364	100%	Yes
2008	366	100%	Yes
2009	365	100%	Yes
2010	357	98%	Yes
2011	242	66%	No
2012	244	67%	No
2013	181	50%	No

Latest Records

Latest records at La Union
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
2 May 2013	La Union, MX	daily low max (Tie)	30.0 C (86.0 F)	tie	46 years	5 of 100 (Routine)
18 April 2013	La Union, MX	daily low max (Tie)	29.4 C (84.9 F)	tie	44 years	5 of 100 (Routine)
17 April 2013	La Union, MX	daily low max (Tie)	30.0 C (86.0 F)	tie	44 years	5 of 100 (Routine)
1 March 2013	La Union, MX	daily high min (Tie)	21.7 C (71.1 F)	tie	40 years	5 of 100 (Routine)
28 February 2013	La Union, MX	daily high min (Tie)	22.8 C (73.0 F)	tie	43 years	5 of 100 (Routine)
22 January 2013	La Union, MX	daily high min (Tie)	21.7 C (71.1 F)	tie	49 years	5 of 100 (Routine)
1 January 2013	La Union, MX	daily rain	23.9 mm (0.9 in)	10.9 mm (0.4 in)	54 years	20 of 100 (Routine)
22 July 2012	La Union, MX	daily high min (Tie)	25.0 C (77.0 F)	tie	55 years	6 of 100 (Routine)
21 July 2012	La Union, MX	daily high min (Tie)	25.0 C (77.0 F)	tie	84 years	8 of 100 (Routine)
20 June 2012	La Union, MX	daily rain	104.9 mm (4.1 in)	10.9 mm (0.4 in)	44 years	26 of 100 (Routine)
17 June 2012	La Union, MX	daily rain	72.4 mm (2.9 in)	15.0 mm (0.6 in)	84 years	40 of 100 (Notable)
16 June 2012	La Union, MX	daily rain	165.4 mm (6.5 in)	122.5 mm (4.8 in)	14 years	52 of 100 (Notable)
12 May 2012	La Union, MX	daily rain	3.8 mm (0.15 in)	3.8 mm (0.15 in)	86 years	20 of 100 (Routine)
18 April 2012	La Union, MX	daily low min (Tie)	15.0 C (59.0 F)	tie	42 years	5 of 100 (Routine)
16 April 2012	La Union, MX	daily low min (Tie)	15.0 C (59.0 F)	tie	52 years	5 of 100 (Routine)
15 April 2012	La Union, MX	daily low max (Tie)	30.0 C (86.0 F)	tie	46 years	5 of 100 (Routine)
4 April 2012	La Union, MX	daily low max	28.3 C (82.9 F)	0.6 C (1.1 F)	50 years	25 of 100 (Routine)
15 February 2012	La Union, MX	daily high min	22.8 C (73.0 F)	1.1 C (2.0 F)	45 years	26 of 100 (Routine)
14 February 2012	La Union, MX	daily high min	23.3 C (73.9 F)	0.5 C (0.9 F)	16 years	15 of 100 (Routine)
10 February 2012	La Union, MX	daily low max (Tie)	28.9 C (84.0 F)	tie	48 years	5 of 100 (Routine)

Climate Trend

58 complete years, 1928 to 2010

One stripe for each of 58 complete years at La Union, 1928 to 2010. Blue stripes are years cooler than the station's own mean of 27.0 C (80.6 F); red stripes are warmer. The coolest year was 1975, at 26.0 C (78.7 F), and the warmest was 1933, at 28.2 C (82.8 F). The strongest colour marks a difference of 1.2 C (2.2 F).

Annual mean temperature at La Union as warming stripes, 1928 to 2010
Year	Annual mean temperature	Difference from the station mean
1928	27.6 C	+0.55 C
1929	26.6 C	-0.42 C
1930	27.4 C	+0.42 C
1931	27.0 C	+0.02 C
1932	26.7 C	-0.28 C
1933	28.2 C	+1.18 C
1935	27.7 C	+0.65 C
1936	28.0 C	+1.01 C
1955	27.1 C	+0.10 C
1956	27.2 C	+0.20 C
1957	27.8 C	+0.78 C
1958	28.0 C	+0.96 C
1960	27.3 C	+0.26 C
1962	26.6 C	-0.45 C
1965	27.2 C	+0.13 C
1966	27.0 C	-0.05 C
1967	26.5 C	-0.52 C
1968	26.3 C	-0.71 C
1969	26.9 C	-0.08 C
1970	26.3 C	-0.70 C
1971	26.1 C	-0.92 C
1972	27.2 C	+0.18 C
1973	26.6 C	-0.44 C
1974	26.3 C	-0.74 C
1975	26.0 C	-1.05 C
1976	26.3 C	-0.73 C
1977	27.1 C	+0.05 C
1978	26.6 C	-0.47 C
1979	26.8 C	-0.27 C
1980	27.3 C	+0.31 C
1982	27.6 C	+0.54 C
1983	26.7 C	-0.33 C
1984	26.6 C	-0.46 C
1985	26.6 C	-0.40 C
1986	26.9 C	-0.09 C
1987	27.4 C	+0.37 C
1988	26.6 C	-0.47 C
1989	26.6 C	-0.47 C
1990	27.7 C	+0.65 C
1991	27.2 C	+0.16 C
1992	26.9 C	-0.16 C
1993	26.9 C	-0.08 C
1994	27.6 C	+0.62 C
1995	27.1 C	+0.11 C
1996	26.8 C	-0.25 C
1997	27.4 C	+0.35 C
1998	27.1 C	+0.12 C
1999	26.6 C	-0.38 C
2000	26.9 C	-0.09 C
2001	27.5 C	+0.52 C
2002	27.6 C	+0.54 C
2003	27.6 C	+0.53 C
2005	27.1 C	+0.12 C
2006	27.2 C	+0.17 C
2007	27.0 C	0.00 C
2008	26.5 C	-0.51 C
2009	27.5 C	+0.50 C
2010	26.6 C	-0.43 C

The fitted trend in annual mean temperature here over 1928 to 2010 is -0.04 C (-0.09 to 0.02) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.06 F (-0.17 to 0.04) per decade. The slope is a straight line fitted to 58 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at La Union
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	-0.04 C (-0.09 to 0.02) per decade	-0.06 F (-0.17 to 0.04) per decade	1928 to 2010	58	Not clearly different from zero
Mean daily maximum	-0.2 C (-0.4 to -0.1) per decade	-0.4 F (-0.7 to -0.2) per decade	1928 to 2010	58	Fall
Mean daily minimum	0.2 C (0.1 to 0.3) per decade	0.3 F (0.1 to 0.5) per decade	1928 to 2010	58	Rise

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

1925 to 2013

Yearly extremes at La Union: 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)	1933	38.3 C (100.9 F)	73
Coldest night (TNn)	7.8 C (46.0 F)	1936	14.4 C (57.9 F)	73
Wettest day (Rx1day)	394.5 mm (15.5 in)	1984	93.0 mm (3.7 in)	73
Wettest five days (Rx5day)	500.6 mm (19.7 in)	1998	162.0 mm (6.4 in)	73
Longest dry spell (CDD)	183 days	1933	126 days	73

Hottest day (TXx)

The hottest day of the year at La Union, 1925 to 2013. The record is 43.9 C (111.0 F) in 1933, marked on the chart; the median year is 38.3 C (100.9 F).

Hottest day (TXx) at La Union by year
Year	Hottest day (TXx)
1925	37.8 C (100.0 F)
1926	42.8 C (109.0 F)
1927	41.1 C (106.0 F)
1928	42.8 C (109.0 F)
1929	38.3 C (100.9 F)
1930	41.1 C (106.0 F)
1931	39.4 C (102.9 F)
1932	38.9 C (102.0 F)
1933	43.9 C (111.0 F)
1934	43.9 C (111.0 F)
1935	41.7 C (107.1 F)
1936	43.9 C (111.0 F)
1937	41.7 C (107.1 F)
1954	40.0 C (104.0 F)
1955	39.4 C (102.9 F)
1956	39.4 C (102.9 F)
1957	38.9 C (102.0 F)
1958	41.7 C (107.1 F)
1959	38.9 C (102.0 F)
1960	37.8 C (100.0 F)
1961	39.4 C (102.9 F)
1962	38.9 C (102.0 F)
1963	38.9 C (102.0 F)
1964	36.7 C (98.1 F)
1965	37.2 C (99.0 F)
1966	38.3 C (100.9 F)
1967	36.7 C (98.1 F)
1968	37.2 C (99.0 F)
1969	35.6 C (96.1 F)
1970	38.3 C (100.9 F)
1971	35.0 C (95.0 F)
1972	38.9 C (102.0 F)
1973	36.1 C (97.0 F)
1974	37.2 C (99.0 F)
1975	37.8 C (100.0 F)
1976	37.2 C (99.0 F)
1977	39.4 C (102.9 F)
1978	36.7 C (98.1 F)
1979	38.9 C (102.0 F)
1980	38.3 C (100.9 F)
1981	37.2 C (99.0 F)
1982	38.3 C (100.9 F)
1983	36.1 C (97.0 F)
1984	38.3 C (100.9 F)
1985	38.3 C (100.9 F)
1986	38.3 C (100.9 F)
1987	37.8 C (100.0 F)
1988	36.7 C (98.1 F)
1989	37.2 C (99.0 F)
1990	37.8 C (100.0 F)
1991	37.2 C (99.0 F)
1992	37.8 C (100.0 F)
1993	38.3 C (100.9 F)
1994	39.4 C (102.9 F)
1995	36.7 C (98.1 F)
1996	39.4 C (102.9 F)
1997	40.0 C (104.0 F)
1998	38.9 C (102.0 F)
1999	37.8 C (100.0 F)
2000	37.8 C (100.0 F)
2001	39.4 C (102.9 F)
2002	38.3 C (100.9 F)
2003	37.8 C (100.0 F)
2004	37.8 C (100.0 F)
2005	38.9 C (102.0 F)
2006	37.8 C (100.0 F)
2007	37.8 C (100.0 F)
2008	38.3 C (100.9 F)
2009	38.3 C (100.9 F)
2010	38.9 C (102.0 F)
2011	37.2 C (99.0 F)
2012	36.7 C (98.1 F)
2013	37.8 C (100.0 F)

Coldest night (TNn)

The coldest night of the year at La Union, 1925 to 2013. The record is 7.8 C (46.0 F) in 1936, marked on the chart; the median year is 14.4 C (57.9 F).

Coldest night (TNn) at La Union by year
Year	Coldest night (TNn)
1925	18.9 C (66.0 F)
1926	13.3 C (55.9 F)
1927	13.9 C (57.0 F)
1928	8.3 C (46.9 F)
1929	11.1 C (52.0 F)
1930	8.9 C (48.0 F)
1931	14.4 C (57.9 F)
1932	13.9 C (57.0 F)
1933	12.2 C (54.0 F)
1934	11.7 C (53.1 F)
1935	10.0 C (50.0 F)
1936	7.8 C (46.0 F)
1937	14.4 C (57.9 F)
1954	17.8 C (64.0 F)
1955	13.9 C (57.0 F)
1956	12.8 C (55.0 F)
1957	15.0 C (59.0 F)
1958	13.9 C (57.0 F)
1959	17.8 C (64.0 F)
1960	15.0 C (59.0 F)
1961	15.0 C (59.0 F)
1962	14.4 C (57.9 F)
1963	15.0 C (59.0 F)
1964	17.8 C (64.0 F)
1965	16.1 C (61.0 F)
1966	15.6 C (60.1 F)
1967	15.0 C (59.0 F)
1968	13.9 C (57.0 F)
1969	16.1 C (61.0 F)
1970	11.1 C (52.0 F)
1971	10.6 C (51.1 F)
1972	12.2 C (54.0 F)
1973	16.1 C (61.0 F)
1974	15.6 C (60.1 F)
1975	13.9 C (57.0 F)
1976	13.3 C (55.9 F)
1977	13.9 C (57.0 F)
1978	16.7 C (62.1 F)
1979	14.4 C (57.9 F)
1980	16.1 C (61.0 F)
1981	13.3 C (55.9 F)
1982	16.1 C (61.0 F)
1983	16.7 C (62.1 F)
1984	15.0 C (59.0 F)
1985	15.0 C (59.0 F)
1986	11.7 C (53.1 F)
1987	15.6 C (60.1 F)
1988	15.0 C (59.0 F)
1989	14.4 C (57.9 F)
1990	16.1 C (61.0 F)
1991	13.9 C (57.0 F)
1992	14.4 C (57.9 F)
1993	13.9 C (57.0 F)
1994	15.0 C (59.0 F)
1995	11.7 C (53.1 F)
1996	13.9 C (57.0 F)
1997	13.3 C (55.9 F)
1998	15.0 C (59.0 F)
1999	13.3 C (55.9 F)
2000	13.9 C (57.0 F)
2001	12.8 C (55.0 F)
2002	15.0 C (59.0 F)
2003	15.0 C (59.0 F)
2004	12.2 C (54.0 F)
2005	14.4 C (57.9 F)
2006	16.7 C (62.1 F)
2007	12.2 C (54.0 F)
2008	11.1 C (52.0 F)
2009	15.6 C (60.1 F)
2010	15.6 C (60.1 F)
2011	13.9 C (57.0 F)
2012	13.9 C (57.0 F)
2013	15.0 C (59.0 F)

Wettest day (Rx1day)

The wettest day of the year at La Union, 1925 to 2013. The record is 394.5 mm (15.5 in) in 1984, marked on the chart; the median year is 93.0 mm (3.7 in).

Wettest day (Rx1day) at La Union by year
Year	Wettest day (Rx1day)
1925	56.4 mm (2.2 in)
1926	144.3 mm (5.7 in)
1927	93.2 mm (3.7 in)
1928	137.4 mm (5.4 in)
1929	68.3 mm (2.7 in)
1930	54.4 mm (2.1 in)
1931	91.4 mm (3.6 in)
1932	66.0 mm (2.6 in)
1933	88.9 mm (3.5 in)
1934	70.4 mm (2.8 in)
1935	88.4 mm (3.5 in)
1936	135.6 mm (5.3 in)
1937	0.0 mm (0.00 in)
1954	67.1 mm (2.6 in)
1955	126.5 mm (5.0 in)
1956	86.4 mm (3.4 in)
1957	79.8 mm (3.1 in)
1958	75.4 mm (3.0 in)
1959	82.3 mm (3.2 in)
1960	85.1 mm (3.4 in)
1961	85.3 mm (3.4 in)
1962	69.1 mm (2.7 in)
1963	69.6 mm (2.7 in)
1964	56.4 mm (2.2 in)
1965	80.3 mm (3.2 in)
1966	51.8 mm (2.0 in)
1967	81.0 mm (3.2 in)
1968	94.0 mm (3.7 in)
1969	70.9 mm (2.8 in)
1970	42.9 mm (1.7 in)
1971	110.5 mm (4.4 in)
1972	94.0 mm (3.7 in)
1973	211.8 mm (8.3 in)
1974	132.1 mm (5.2 in)
1975	78.0 mm (3.1 in)
1976	319.8 mm (12.6 in)
1977	110.2 mm (4.3 in)
1978	98.3 mm (3.9 in)
1979	150.4 mm (5.9 in)
1980	114.8 mm (4.5 in)
1981	185.4 mm (7.3 in)
1982	50.8 mm (2.0 in)
1983	308.9 mm (12.2 in)
1984	394.5 mm (15.5 in)
1985	74.9 mm (2.9 in)
1986	48.3 mm (1.9 in)
1987	144.8 mm (5.7 in)
1988	236.0 mm (9.3 in)
1989	184.7 mm (7.3 in)
1990	61.2 mm (2.4 in)
1991	96.3 mm (3.8 in)
1992	114.3 mm (4.5 in)
1993	74.9 mm (2.9 in)
1994	85.9 mm (3.4 in)
1995	119.9 mm (4.7 in)
1996	104.1 mm (4.1 in)
1997	92.5 mm (3.6 in)
1998	358.4 mm (14.1 in)
1999	165.6 mm (6.5 in)
2000	128.5 mm (5.1 in)
2001	48.0 mm (1.9 in)
2002	152.9 mm (6.0 in)
2003	90.4 mm (3.6 in)
2004	104.4 mm (4.1 in)
2005	97.8 mm (3.9 in)
2006	93.0 mm (3.7 in)
2007	113.5 mm (4.5 in)
2008	99.8 mm (3.9 in)
2009	70.4 mm (2.8 in)
2010	153.9 mm (6.1 in)
2011	154.9 mm (6.1 in)
2012	165.4 mm (6.5 in)
2013	29.0 mm (1.1 in)

Wettest five days (Rx5day)

The wettest five days of the year at La Union, 1925 to 2013. The record is 500.6 mm (19.7 in) in 1998, marked on the chart; the median year is 162.0 mm (6.4 in).

Wettest five days (Rx5day) at La Union by year
Year	Wettest five days (Rx5day)
1925	113.1 mm (4.5 in)
1926	229.1 mm (9.0 in)
1927	118.6 mm (4.7 in)
1928	281.1 mm (11.1 in)
1929	162.0 mm (6.4 in)
1930	118.2 mm (4.7 in)
1931	171.9 mm (6.8 in)
1932	165.4 mm (6.5 in)
1933	238.0 mm (9.4 in)
1934	100.9 mm (4.0 in)
1935	185.9 mm (7.3 in)
1936	182.6 mm (7.2 in)
1937	0.0 mm (0.00 in)
1954	86.2 mm (3.4 in)
1955	356.4 mm (14.0 in)
1956	195.7 mm (7.7 in)
1957	92.5 mm (3.6 in)
1958	119.6 mm (4.7 in)
1959	110.3 mm (4.3 in)
1960	100.6 mm (4.0 in)
1961	172.0 mm (6.8 in)
1962	109.4 mm (4.3 in)
1963	113.6 mm (4.5 in)
1964	87.4 mm (3.4 in)
1965	148.4 mm (5.8 in)
1966	129.6 mm (5.1 in)
1967	159.8 mm (6.3 in)
1968	269.3 mm (10.6 in)
1969	126.2 mm (5.0 in)
1970	80.5 mm (3.2 in)
1971	179.9 mm (7.1 in)
1972	118.4 mm (4.7 in)
1973	232.6 mm (9.2 in)
1974	178.0 mm (7.0 in)
1975	213.9 mm (8.4 in)
1976	361.2 mm (14.2 in)
1977	137.4 mm (5.4 in)
1978	103.8 mm (4.1 in)
1979	180.6 mm (7.1 in)
1980	242.6 mm (9.6 in)
1981	276.6 mm (10.9 in)
1982	83.3 mm (3.3 in)
1983	342.2 mm (13.5 in)
1984	498.7 mm (19.6 in)
1985	112.0 mm (4.4 in)
1986	71.7 mm (2.8 in)
1987	162.0 mm (6.4 in)
1988	356.7 mm (14.0 in)
1989	297.7 mm (11.7 in)
1990	106.7 mm (4.2 in)
1991	133.7 mm (5.3 in)
1992	226.6 mm (8.9 in)
1993	187.0 mm (7.4 in)
1994	129.6 mm (5.1 in)
1995	180.2 mm (7.1 in)
1996	162.1 mm (6.4 in)
1997	144.3 mm (5.7 in)
1998	500.6 mm (19.7 in)
1999	260.8 mm (10.3 in)
2000	214.9 mm (8.5 in)
2001	69.8 mm (2.7 in)
2002	272.3 mm (10.7 in)
2003	158.0 mm (6.2 in)
2004	158.3 mm (6.2 in)
2005	199.9 mm (7.9 in)
2006	187.8 mm (7.4 in)
2007	133.1 mm (5.2 in)
2008	132.3 mm (5.2 in)
2009	83.0 mm (3.3 in)
2010	200.1 mm (7.9 in)
2011	252.5 mm (9.9 in)
2012	392.0 mm (15.4 in)
2013	74.5 mm (2.9 in)

Longest dry spell (CDD)

The longest dry spell of the year at La Union, 1925 to 2013. The record is 183 days in 1933, marked on the chart; the median year is 126 days.

Longest dry spell (CDD) at La Union by year
Year	Longest dry spell (CDD)
1925	22 days
1926	156 days
1927	101 days
1928	125 days
1929	150 days
1930	123 days
1931	126 days
1932	128 days
1933	183 days
1934	145 days
1935	100 days
1936	158 days
1937	31 days
1954	56 days
1955	146 days
1956	108 days
1957	151 days
1958	153 days
1959	103 days
1960	153 days
1961	150 days
1962	80 days
1963	151 days
1964	84 days
1965	156 days
1966	92 days
1967	123 days
1968	70 days
1969	165 days
1970	151 days
1971	142 days
1972	152 days
1973	93 days
1974	146 days
1975	105 days
1976	129 days
1977	144 days
1978	87 days
1979	140 days
1980	86 days
1981	148 days
1982	114 days
1983	72 days
1984	120 days
1985	149 days
1986	124 days
1987	92 days
1988	101 days
1989	161 days
1990	125 days
1991	166 days
1992	96 days
1993	136 days
1994	148 days
1995	85 days
1996	106 days
1997	79 days
1998	160 days
1999	159 days
2000	142 days
2001	90 days
2002	119 days
2003	139 days
2004	105 days
2005	96 days
2006	145 days
2007	142 days
2008	147 days
2009	136 days
2010	119 days
2011	89 days
2012	90 days
2013	157 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.

Rainfall Return Levels

66 years, 1926 to 2010

A day with at least 95.3 mm (3.8 in) of rain is expected about once in 2 years. A day with at least 427.3 mm (16.8 in) of rain is expected about once in 100 years.

Rainfall return levels at La Union: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	95.3 mm (3.8 in)
5 years	143.8 mm (5.7 in)
10 years	187.9 mm (7.4 in)
25 years	262.4 mm (10.3 in)
50 years	335.4 mm (13.2 in)
100 years	427.3 mm (16.8 in)	Longer than the 66 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, 66 years of values from 1926 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: 394.5 mm (15.5 in) in 1984; 358.4 mm (14.1 in) in 1998; 319.8 mm (12.6 in) in 1976.

Station Changes

1 suspected

One change was suspected in the annual mean temperature of La Union, at 1983. Each is measured against neighbouring stations.

Relative to 4 neighbouring stations, the station's annual mean temperature from 1983 ran 0.4 C (0.7 F) lower than in the years before (likely change).

Suspected changes in the annual mean temperature at La Union, against neighbouring stations
Year	Shift (C)	Shift (F)	Strength	Neighbours
1983	-0.4	-0.7	likely	4

Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.

Download the Data

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