Union de Tula Weather Records (MXN00014158)

Record envelope, standing records and threshold days for Union de Tula (MXN00014158), Mexico, with 81 years of record.

Key Facts for Union de Tula

Union de Tula (MXN00014158) is a weather station in Mexico at 19.95 latitude and -104.27 longitude, 1,340 m (4,396 ft) above sea level.
The station reports from 1926 to 2006, 81 years of record.
1,464 records set at Union de Tula still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Union de Tula tied a daily record high minimum temperature of 18.9 C (66.0 F) on 29 July 2006.

About the Station

Location: Mexico, 19.95 latitude, -104.27 longitude.
Elevation: 1,340 m (4,396 ft).
Period of record: 1926 to 2006, 81 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 Union de Tula. 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 Union de Tula, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	36.7 C (98.1 F)	-3.3 C (26.1 F)	n/a	n/a
Feb	37.2 C (99.0 F)	-2.2 C (28.0 F)	n/a	n/a
Mar	37.8 C (100.0 F)	-3.3 C (26.1 F)	n/a	n/a
Apr	39.4 C (102.9 F)	1.7 C (35.1 F)	n/a	n/a
May	40.6 C (105.1 F)	4.4 C (39.9 F)	n/a	n/a
Jun	38.3 C (100.9 F)	8.9 C (48.0 F)	n/a	n/a
Jul	36.1 C (97.0 F)	8.3 C (46.9 F)	n/a	n/a
Aug	36.1 C (97.0 F)	8.3 C (46.9 F)	n/a	n/a
Sep	37.2 C (99.0 F)	5.6 C (42.1 F)	n/a	n/a
Oct	37.2 C (99.0 F)	2.2 C (36.0 F)	n/a	n/a
Nov	36.7 C (98.1 F)	0.0 C (32.0 F)	n/a	n/a
Dec	33.9 C (93.0 F)	-1.1 C (30.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Union de Tula still stand. 1928 holds the most, with 168.

Standing records at Union de Tula by the year they were set
Year set	Standing records
1926	3
1927	123
1928	168
1929	66
1930	30
1931	5
1939	26
1942	55
1943	25
1944	39
1945	17
1946	13
1947	22
1948	10
1949	6
1950	9
1951	18
1952	20
1953	15
1954	21
1955	10
1956	6
1957	24
1958	22
1959	29
1960	28
1961	10
1962	8
1963	18
1964	9
1965	10
1966	14
1967	11
1968	32
1969	11
1970	14
1971	13
1972	24
1973	12
1974	12
1975	17
1976	10
1977	6
1978	16
1979	26
1980	11
1981	15
1982	19
1983	21
1984	7
1985	6
1986	14
1987	11
1988	11
1989	6
1990	6
1991	20
1992	11
1993	26
1994	10
1995	12
1996	11
1997	34
1998	24
1999	35
2000	11
2001	8
2002	16
2003	9
2004	13
2005	10
2006	4

All-Time Record Progression

5 new records

5 all-time records were set at Union de Tula between 25 January 1980 and 6 May 1998. Each dot is a new record.

When Union de Tula set new all-time records
Date	Kind	Detail
1980-01-25	Record low maximum temperature	Record low maximum temperature 11.7 C (53.1 F)
1982-05-30	Record high maximum temperature	Record high maximum temperature 38.9 C (102.0 F)
1983-05-22	Record high maximum temperature	Record high maximum temperature 39.4 C (102.9 F)
1993-03-03	Record low minimum temperature	Record low minimum temperature -3.3 C (26.1 F)
1998-05-06	Record high maximum temperature	Record high maximum temperature 40.6 C (105.1 F)

Wettest Day of Each Month

Sep: 113.3 mm (4.5 in)

The wettest day on record for each calendar month at Union de Tula. The most was 113.3 mm (4.5 in) on 8 September 1927.

Record daily precipitation for each month at Union de Tula
Month	Record daily precipitation (mm)	Date
Jan	70.9 mm (2.8 in)	26 January 1931
Feb	47.8 mm (1.9 in)	11 February 1966
Mar	71.9 mm (2.8 in)	4 March 1968
Apr	49.3 mm (1.9 in)	17 April 1959
May	70.4 mm (2.8 in)	26 May 1983
Jun	73.9 mm (2.9 in)	12 June 1968
Jul	105.9 mm (4.2 in)	12 July 1993
Aug	87.4 mm (3.4 in)	30 August 1971
Sep	113.3 mm (4.5 in)	8 September 1927
Oct	101.9 mm (4.0 in)	3 October 1969
Nov	100.8 mm (4.0 in)	26 November 1982
Dec	66.8 mm (2.6 in)	12 December 1960

Period of Record Coverage

1926 to 2006

73 years of record at Union de Tula, 1926 to 2006. 16 years have data for under 90 percent of days and are left out of rankings: 1926, 1927, 1934, 1939, 1942, 1943, 1944, 1945 and others.

Days with data per year at Union de Tula
Year	Days with data	Share of year	Complete
1926	92	25%	No
1927	233	64%	No
1928	365	100%	Yes
1929	360	99%	Yes
1930	360	99%	Yes
1931	362	99%	Yes
1934	25	7%	No
1939	28	8%	No
1942	219	60%	No
1943	301	82%	No
1944	316	86%	No
1945	307	84%	No
1946	303	83%	No
1947	311	85%	No
1948	314	86%	No
1949	330	90%	Yes
1950	337	92%	Yes
1951	355	97%	Yes
1952	360	98%	Yes
1953	359	98%	Yes
1954	353	97%	Yes
1955	363	99%	Yes
1956	357	98%	Yes
1957	354	97%	Yes
1958	360	99%	Yes
1959	357	98%	Yes
1960	362	99%	Yes
1961	365	100%	Yes
1962	365	100%	Yes
1963	303	83%	No
1964	335	92%	Yes
1965	365	100%	Yes
1966	365	100%	Yes
1967	365	100%	Yes
1968	365	100%	Yes
1969	363	99%	Yes
1970	365	100%	Yes
1971	365	100%	Yes
1972	366	100%	Yes
1973	364	100%	Yes
1974	364	100%	Yes
1975	364	100%	Yes
1976	364	99%	Yes
1977	365	100%	Yes
1978	365	100%	Yes
1979	364	100%	Yes
1980	365	100%	Yes
1981	365	100%	Yes
1982	365	100%	Yes
1983	360	99%	Yes
1984	304	83%	No
1985	365	100%	Yes
1986	331	91%	Yes
1987	364	100%	Yes
1988	359	98%	Yes
1989	331	91%	Yes
1990	333	91%	Yes
1991	365	100%	Yes
1992	319	87%	No
1993	352	96%	Yes
1994	353	97%	Yes
1995	323	88%	No
1996	356	97%	Yes
1997	364	100%	Yes
1998	363	99%	Yes
1999	362	99%	Yes
2000	335	92%	Yes
2001	364	100%	Yes
2002	364	100%	Yes
2003	365	100%	Yes
2004	363	99%	Yes
2005	362	99%	Yes
2006	153	42%	No

Latest Records

Latest records at Union de Tula
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
29 July 2006	Union de Tula, MX	daily high min (Tie)	18.9 C (66.0 F)	tie	64 years	6 of 100 (Routine)
22 July 2006	Union de Tula, MX	daily low max	22.8 C (73.0 F)	1.1 C (2.0 F)	49 years	26 of 100 (Routine)
12 July 2006	Union de Tula, MX	monthly high max (Tie)	36.1 C (97.0 F)	tie	42 years	7 of 100 (Routine)
7 July 2006	Union de Tula, MX	daily high max (Tie)	31.7 C (89.1 F)	tie	75 years	7 of 100 (Routine)
3 July 2006	Union de Tula, MX	daily high max	34.4 C (93.9 F)	0.5 C (0.9 F)	43 years	22 of 100 (Routine)
2 July 2006	Union de Tula, MX	daily high max (Tie)	32.8 C (91.0 F)	tie	4 years	2 of 100 (Routine)
18 June 2006	Union de Tula, MX	daily rain	61.0 mm (2.4 in)	19.3 mm (0.8 in)	21 years	31 of 100 (Routine)
14 June 2006	Union de Tula, MX	daily high min (Tie)	20.0 C (68.0 F)	tie	64 years	6 of 100 (Routine)
9 June 2006	Union de Tula, MX	daily low max	21.1 C (70.0 F)	1.7 C (3.1 F)	55 years	29 of 100 (Routine)
3 June 2006	Union de Tula, MX	daily rain	39.4 mm (1.6 in)	15.5 mm (0.6 in)	60 years	40 of 100 (Notable)
21 May 2006	Union de Tula, MX	daily rain	9.9 mm (0.39 in)	3.3 mm (0.13 in)	40 years	20 of 100 (Routine)
3 May 2006	Union de Tula, MX	daily rain	4.3 mm (0.17 in)	1.3 mm (0.05 in)	40 years	20 of 100 (Routine)
14 December 2005	Union de Tula, MX	daily high max	31.1 C (88.0 F)	0.5 C (0.9 F)	11 years	12 of 100 (Routine)
8 December 2005	Union de Tula, MX	daily low max (Tie)	20.0 C (68.0 F)	tie	40 years	5 of 100 (Routine)
7 December 2005	Union de Tula, MX	daily low max (Tie)	20.0 C (68.0 F)	tie	36 years	4 of 100 (Routine)
25 November 2005	Union de Tula, MX	daily low max (Tie)	20.0 C (68.0 F)	tie	32 years	4 of 100 (Routine)
13 October 2005	Union de Tula, MX	daily low max (Tie)	20.0 C (68.0 F)	tie	11 years	2 of 100 (Routine)
19 September 2005	Union de Tula, MX	daily low max	20.0 C (68.0 F)	3.3 C (5.9 F)	43 years	34 of 100 (Routine)
28 August 2005	Union de Tula, MX	daily high min (Tie)	18.9 C (66.0 F)	tie	56 years	6 of 100 (Routine)
13 July 2005	Union de Tula, MX	daily rain	55.4 mm (2.2 in)	4.9 mm (0.19 in)	56 years	28 of 100 (Routine)

Climate Trend

56 complete years, 1928 to 2005

One stripe for each of 56 complete years at Union de Tula, 1928 to 2005. Blue stripes are years cooler than the station's own mean of 20.6 C (69.2 F); red stripes are warmer. The coolest year was 1968, at 19.5 C (67.0 F), and the warmest was 1928, at 23.5 C (74.2 F). The strongest colour marks a difference of 2.9 C (5.2 F).

Annual mean temperature at Union de Tula as warming stripes, 1928 to 2005
Year	Annual mean temperature	Difference from the station mean
1928	23.5 C	+2.82 C
1929	21.7 C	+1.01 C
1930	20.5 C	-0.13 C
1931	20.2 C	-0.41 C
1944	20.5 C	-0.14 C
1945	21.5 C	+0.87 C
1946	21.1 C	+0.43 C
1947	20.9 C	+0.24 C
1948	21.3 C	+0.66 C
1949	21.1 C	+0.40 C
1950	21.2 C	+0.55 C
1951	21.2 C	+0.57 C
1952	21.1 C	+0.45 C
1953	21.2 C	+0.50 C
1954	21.4 C	+0.73 C
1955	20.9 C	+0.25 C
1956	20.7 C	+0.08 C
1957	21.5 C	+0.84 C
1958	21.2 C	+0.51 C
1959	21.4 C	+0.74 C
1960	21.4 C	+0.71 C
1961	20.0 C	-0.66 C
1962	20.2 C	-0.43 C
1965	20.1 C	-0.53 C
1966	19.9 C	-0.75 C
1967	19.7 C	-1.00 C
1968	19.5 C	-1.18 C
1969	20.0 C	-0.68 C
1970	20.1 C	-0.57 C
1971	20.0 C	-0.65 C
1972	20.0 C	-0.61 C
1973	20.1 C	-0.52 C
1974	20.3 C	-0.33 C
1975	20.0 C	-0.69 C
1976	20.2 C	-0.42 C
1977	20.3 C	-0.36 C
1978	20.4 C	-0.25 C
1979	20.7 C	+0.03 C
1980	20.8 C	+0.15 C
1981	20.3 C	-0.31 C
1982	20.7 C	+0.05 C
1983	20.1 C	-0.53 C
1985	20.3 C	-0.31 C
1987	20.4 C	-0.25 C
1988	20.7 C	+0.03 C
1989	20.7 C	+0.00 C
1991	20.5 C	-0.11 C
1993	20.0 C	-0.70 C
1994	20.7 C	+0.06 C
1997	19.8 C	-0.83 C
1998	20.4 C	-0.26 C
2001	20.7 C	+0.08 C
2002	20.9 C	+0.28 C
2003	21.1 C	+0.42 C
2004	20.5 C	-0.15 C
2005	20.8 C	+0.18 C

The annual mean temperature here has fallen by 0.1 C (0.1 to 0.2) per decade over 1928 to 2005. In Fahrenheit: 0.2 F (0.1 to 0.4) per decade. The slope is a straight line fitted to 56 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Union de Tula
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	-0.1 C (-0.2 to -0.1) per decade	-0.2 F (-0.4 to -0.1) per decade	1928 to 2005	56	Fall
Mean daily maximum	0.1 C (-0.1 to 0.2) per decade	0.1 F (-0.1 to 0.3) per decade	1928 to 2005	56	Not clearly different from zero
Mean daily minimum	-0.3 C (-0.4 to -0.2) per decade	-0.6 F (-0.8 to -0.4) per decade	1928 to 2005	56	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

1926 to 2006

Yearly extremes at Union de Tula: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	40.6 C (105.1 F)	1998	36.7 C (98.1 F)	73
Coldest night (TNn)	-3.3 C (26.1 F)	1993	1.7 C (35.1 F)	73
Wettest day (Rx1day)	113.3 mm (4.5 in)	1927	57.4 mm (2.3 in)	73
Wettest five days (Rx5day)	182.6 mm (7.2 in)	1971	99.3 mm (3.9 in)	73
Longest dry spell (CDD)	164 days	1991	88 days	73

Hottest day (TXx)

The hottest day of the year at Union de Tula, 1926 to 2006. The record is 40.6 C (105.1 F) in 1998, marked on the chart; the median year is 36.7 C (98.1 F).

Hottest day (TXx) at Union de Tula by year
Year	Hottest day (TXx)
1926	31.7 C (89.1 F)
1927	32.2 C (90.0 F)
1928	36.7 C (98.1 F)
1929	35.6 C (96.1 F)
1930	35.0 C (95.0 F)
1931	35.0 C (95.0 F)
1934	30.0 C (86.0 F)
1939	34.4 C (93.9 F)
1942	37.8 C (100.0 F)
1943	36.1 C (97.0 F)
1944	35.0 C (95.0 F)
1945	37.8 C (100.0 F)
1946	36.1 C (97.0 F)
1947	35.0 C (95.0 F)
1948	36.1 C (97.0 F)
1949	35.0 C (95.0 F)
1950	35.6 C (96.1 F)
1951	36.7 C (98.1 F)
1952	36.7 C (98.1 F)
1953	36.1 C (97.0 F)
1954	35.0 C (95.0 F)
1955	36.1 C (97.0 F)
1956	35.6 C (96.1 F)
1957	36.7 C (98.1 F)
1958	36.1 C (97.0 F)
1959	34.4 C (93.9 F)
1960	38.3 C (100.9 F)
1961	36.7 C (98.1 F)
1962	35.6 C (96.1 F)
1963	36.7 C (98.1 F)
1964	36.7 C (98.1 F)
1965	36.7 C (98.1 F)
1966	35.0 C (95.0 F)
1967	34.4 C (93.9 F)
1968	35.0 C (95.0 F)
1969	35.0 C (95.0 F)
1970	35.6 C (96.1 F)
1971	35.0 C (95.0 F)
1972	36.7 C (98.1 F)
1973	35.6 C (96.1 F)
1974	37.8 C (100.0 F)
1975	36.7 C (98.1 F)
1976	37.8 C (100.0 F)
1977	35.6 C (96.1 F)
1978	37.8 C (100.0 F)
1979	36.7 C (98.1 F)
1980	37.8 C (100.0 F)
1981	37.8 C (100.0 F)
1982	38.9 C (102.0 F)
1983	39.4 C (102.9 F)
1984	38.9 C (102.0 F)
1985	37.8 C (100.0 F)
1986	38.9 C (102.0 F)
1987	37.8 C (100.0 F)
1988	38.9 C (102.0 F)
1989	36.7 C (98.1 F)
1990	36.7 C (98.1 F)
1991	39.4 C (102.9 F)
1992	35.0 C (95.0 F)
1993	36.7 C (98.1 F)
1994	37.2 C (99.0 F)
1995	37.2 C (99.0 F)
1996	37.8 C (100.0 F)
1997	36.1 C (97.0 F)
1998	40.6 C (105.1 F)
1999	37.8 C (100.0 F)
2000	37.8 C (100.0 F)
2001	37.2 C (99.0 F)
2002	37.8 C (100.0 F)
2003	38.3 C (100.9 F)
2004	36.1 C (97.0 F)
2005	38.3 C (100.9 F)
2006	36.1 C (97.0 F)

Coldest night (TNn)

The coldest night of the year at Union de Tula, 1926 to 2006. The record is -3.3 C (26.1 F) in 1993, marked on the chart; the median year is 1.7 C (35.1 F).

Coldest night (TNn) at Union de Tula by year
Year	Coldest night (TNn)
1926	4.4 C (39.9 F)
1927	-1.1 C (30.0 F)
1928	10.0 C (50.0 F)
1929	6.7 C (44.1 F)
1930	5.0 C (41.0 F)
1931	5.6 C (42.1 F)
1934	5.0 C (41.0 F)
1939	10.0 C (50.0 F)
1942	1.1 C (34.0 F)
1943	5.0 C (41.0 F)
1944	3.9 C (39.0 F)
1945	5.0 C (41.0 F)
1946	3.3 C (37.9 F)
1947	5.0 C (41.0 F)
1948	2.8 C (37.0 F)
1949	5.0 C (41.0 F)
1950	3.3 C (37.9 F)
1951	2.8 C (37.0 F)
1952	1.7 C (35.1 F)
1953	2.2 C (36.0 F)
1954	0.0 C (32.0 F)
1955	0.0 C (32.0 F)
1956	1.7 C (35.1 F)
1957	4.4 C (39.9 F)
1958	3.9 C (39.0 F)
1959	3.3 C (37.9 F)
1960	1.7 C (35.1 F)
1961	1.1 C (34.0 F)
1962	0.6 C (33.1 F)
1963	-2.2 C (28.0 F)
1964	2.2 C (36.0 F)
1965	2.2 C (36.0 F)
1966	1.7 C (35.1 F)
1967	0.6 C (33.1 F)
1968	1.1 C (34.0 F)
1969	2.8 C (37.0 F)
1970	0.6 C (33.1 F)
1971	0.0 C (32.0 F)
1972	2.2 C (36.0 F)
1973	0.6 C (33.1 F)
1974	3.3 C (37.9 F)
1975	0.6 C (33.1 F)
1976	0.6 C (33.1 F)
1977	0.6 C (33.1 F)
1978	1.7 C (35.1 F)
1979	0.0 C (32.0 F)
1980	1.1 C (34.0 F)
1981	1.7 C (35.1 F)
1982	0.6 C (33.1 F)
1983	-1.1 C (30.0 F)
1984	2.8 C (37.0 F)
1985	0.6 C (33.1 F)
1986	0.0 C (32.0 F)
1987	-0.6 C (30.9 F)
1988	-1.7 C (28.9 F)
1989	1.7 C (35.1 F)
1990	-0.6 C (30.9 F)
1991	0.6 C (33.1 F)
1992	0.0 C (32.0 F)
1993	-3.3 C (26.1 F)
1994	2.2 C (36.0 F)
1995	0.6 C (33.1 F)
1996	0.6 C (33.1 F)
1997	-3.3 C (26.1 F)
1998	-1.7 C (28.9 F)
1999	-1.1 C (30.0 F)
2000	1.7 C (35.1 F)
2001	1.1 C (34.0 F)
2002	0.6 C (33.1 F)
2003	1.7 C (35.1 F)
2004	1.1 C (34.0 F)
2005	2.8 C (37.0 F)
2006	7.8 C (46.0 F)

Wettest day (Rx1day)

The wettest day of the year at Union de Tula, 1926 to 2006. The record is 113.3 mm (4.5 in) in 1927, marked on the chart; the median year is 57.4 mm (2.3 in).

Wettest day (Rx1day) at Union de Tula by year
Year	Wettest day (Rx1day)
1926	21.8 mm (0.9 in)
1927	113.3 mm (4.5 in)
1928	43.4 mm (1.7 in)
1929	39.9 mm (1.6 in)
1930	56.4 mm (2.2 in)
1931	83.3 mm (3.3 in)
1934	45.0 mm (1.8 in)
1939	45.5 mm (1.8 in)
1942	51.8 mm (2.0 in)
1943	78.5 mm (3.1 in)
1944	64.8 mm (2.6 in)
1945	57.4 mm (2.3 in)
1946	51.1 mm (2.0 in)
1947	50.5 mm (2.0 in)
1948	63.2 mm (2.5 in)
1949	50.5 mm (2.0 in)
1950	50.8 mm (2.0 in)
1951	59.4 mm (2.3 in)
1952	26.4 mm (1.0 in)
1953	52.8 mm (2.1 in)
1954	46.5 mm (1.8 in)
1955	64.8 mm (2.6 in)
1956	47.8 mm (1.9 in)
1957	68.8 mm (2.7 in)
1958	70.4 mm (2.8 in)
1959	69.9 mm (2.8 in)
1960	66.8 mm (2.6 in)
1961	49.8 mm (2.0 in)
1962	71.9 mm (2.8 in)
1963	79.8 mm (3.1 in)
1964	43.9 mm (1.7 in)
1965	55.1 mm (2.2 in)
1966	75.9 mm (3.0 in)
1967	60.5 mm (2.4 in)
1968	82.8 mm (3.3 in)
1969	101.9 mm (4.0 in)
1970	39.9 mm (1.6 in)
1971	87.4 mm (3.4 in)
1972	49.8 mm (2.0 in)
1973	63.8 mm (2.5 in)
1974	37.6 mm (1.5 in)
1975	60.2 mm (2.4 in)
1976	52.8 mm (2.1 in)
1977	54.9 mm (2.2 in)
1978	29.0 mm (1.1 in)
1979	48.8 mm (1.9 in)
1980	51.8 mm (2.0 in)
1981	52.8 mm (2.1 in)
1982	100.8 mm (4.0 in)
1983	70.4 mm (2.8 in)
1984	62.5 mm (2.5 in)
1985	43.9 mm (1.7 in)
1986	72.1 mm (2.8 in)
1987	83.1 mm (3.3 in)
1988	44.5 mm (1.8 in)
1989	73.4 mm (2.9 in)
1990	57.7 mm (2.3 in)
1991	39.9 mm (1.6 in)
1992	68.1 mm (2.7 in)
1993	105.9 mm (4.2 in)
1994	58.9 mm (2.3 in)
1995	47.8 mm (1.9 in)
1996	57.7 mm (2.3 in)
1997	75.9 mm (3.0 in)
1998	79.8 mm (3.1 in)
1999	60.2 mm (2.4 in)
2000	48.8 mm (1.9 in)
2001	44.5 mm (1.8 in)
2002	37.3 mm (1.5 in)
2003	50.8 mm (2.0 in)
2004	82.6 mm (3.3 in)
2005	55.4 mm (2.2 in)
2006	61.0 mm (2.4 in)

Wettest five days (Rx5day)

The wettest five days of the year at Union de Tula, 1926 to 2006. The record is 182.6 mm (7.2 in) in 1971, marked on the chart; the median year is 99.3 mm (3.9 in).

Wettest five days (Rx5day) at Union de Tula by year
Year	Wettest five days (Rx5day)
1926	27.1 mm (1.1 in)
1927	134.0 mm (5.3 in)
1928	79.5 mm (3.1 in)
1929	94.8 mm (3.7 in)
1930	113.7 mm (4.5 in)
1931	159.8 mm (6.3 in)
1934	52.1 mm (2.1 in)
1939	80.8 mm (3.2 in)
1942	64.7 mm (2.5 in)
1943	126.4 mm (5.0 in)
1944	149.1 mm (5.9 in)
1945	99.3 mm (3.9 in)
1946	98.5 mm (3.9 in)
1947	83.5 mm (3.3 in)
1948	109.5 mm (4.3 in)
1949	135.8 mm (5.3 in)
1950	88.0 mm (3.5 in)
1951	119.4 mm (4.7 in)
1952	56.1 mm (2.2 in)
1953	94.0 mm (3.7 in)
1954	66.1 mm (2.6 in)
1955	128.2 mm (5.0 in)
1956	74.7 mm (2.9 in)
1957	143.7 mm (5.7 in)
1958	114.8 mm (4.5 in)
1959	132.4 mm (5.2 in)
1960	80.6 mm (3.2 in)
1961	111.4 mm (4.4 in)
1962	127.3 mm (5.0 in)
1963	124.8 mm (4.9 in)
1964	83.3 mm (3.3 in)
1965	78.5 mm (3.1 in)
1966	94.4 mm (3.7 in)
1967	104.9 mm (4.1 in)
1968	144.9 mm (5.7 in)
1969	127.4 mm (5.0 in)
1970	85.4 mm (3.4 in)
1971	182.6 mm (7.2 in)
1972	92.2 mm (3.6 in)
1973	129.2 mm (5.1 in)
1974	79.3 mm (3.1 in)
1975	98.3 mm (3.9 in)
1976	108.4 mm (4.3 in)
1977	106.9 mm (4.2 in)
1978	61.1 mm (2.4 in)
1979	96.6 mm (3.8 in)
1980	118.6 mm (4.7 in)
1981	103.1 mm (4.1 in)
1982	136.6 mm (5.4 in)
1983	85.4 mm (3.4 in)
1984	128.6 mm (5.1 in)
1985	69.4 mm (2.7 in)
1986	87.9 mm (3.5 in)
1987	149.6 mm (5.9 in)
1988	105.7 mm (4.2 in)
1989	103.9 mm (4.1 in)
1990	92.4 mm (3.6 in)
1991	89.7 mm (3.5 in)
1992	133.2 mm (5.2 in)
1993	115.6 mm (4.6 in)
1994	82.8 mm (3.3 in)
1995	120.0 mm (4.7 in)
1996	99.0 mm (3.9 in)
1997	151.9 mm (6.0 in)
1998	139.9 mm (5.5 in)
1999	138.3 mm (5.4 in)
2000	66.8 mm (2.6 in)
2001	67.3 mm (2.6 in)
2002	70.6 mm (2.8 in)
2003	96.6 mm (3.8 in)
2004	153.7 mm (6.1 in)
2005	89.5 mm (3.5 in)
2006	65.8 mm (2.6 in)

Longest dry spell (CDD)

The longest dry spell of the year at Union de Tula, 1926 to 2006. The record is 164 days in 1991, marked on the chart; the median year is 88 days.

Longest dry spell (CDD) at Union de Tula by year
Year	Longest dry spell (CDD)
1926	49 days
1927	40 days
1928	69 days
1929	130 days
1930	108 days
1931	89 days
1934	25 days
1939	26 days
1942	34 days
1943	90 days
1944	54 days
1945	124 days
1946	87 days
1947	71 days
1948	42 days
1949	88 days
1950	137 days
1951	91 days
1952	77 days
1953	146 days
1954	87 days
1955	105 days
1956	135 days
1957	68 days
1958	73 days
1959	88 days
1960	151 days
1961	118 days
1962	73 days
1963	58 days
1964	78 days
1965	81 days
1966	50 days
1967	123 days
1968	63 days
1969	148 days
1970	71 days
1971	137 days
1972	38 days
1973	74 days
1974	94 days
1975	111 days
1976	103 days
1977	95 days
1978	83 days
1979	109 days
1980	113 days
1981	48 days
1982	106 days
1983	94 days
1984	56 days
1985	108 days
1986	56 days
1987	79 days
1988	95 days
1989	94 days
1990	66 days
1991	164 days
1992	83 days
1993	133 days
1994	132 days
1995	106 days
1996	136 days
1997	50 days
1998	158 days
1999	94 days
2000	128 days
2001	67 days
2002	88 days
2003	112 days
2004	73 days
2005	109 days
2006	63 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

65 years, 1928 to 2005

A day with at least 57.6 mm (2.3 in) of rain is expected about once in 2 years. A day with at least 110.1 mm (4.3 in) of rain is expected about once in 100 years.

Rainfall return levels at Union de Tula: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	57.6 mm (2.3 in)
5 years	72.8 mm (2.9 in)
10 years	82.4 mm (3.2 in)
25 years	94.0 mm (3.7 in)
50 years	102.3 mm (4.0 in)
100 years	110.1 mm (4.3 in)	Longer than the 65 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, 65 years of values from 1928 to 2005.

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: 105.9 mm (4.2 in) in 1993; 101.9 mm (4.0 in) in 1969; 100.8 mm (4.0 in) in 1982.

Download the Data

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