Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Union Hidalgo. 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 Hidalgo, 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)
10.6 C (51.1 F)
n/a
n/a
Feb
41.7 C (107.1 F)
10.0 C (50.0 F)
n/a
n/a
Mar
42.2 C (108.0 F)
12.2 C (54.0 F)
n/a
n/a
Apr
42.8 C (109.0 F)
13.3 C (55.9 F)
n/a
n/a
May
43.9 C (111.0 F)
15.0 C (59.0 F)
n/a
n/a
Jun
42.8 C (109.0 F)
15.0 C (59.0 F)
n/a
n/a
Jul
43.9 C (111.0 F)
15.6 C (60.1 F)
n/a
n/a
Aug
43.9 C (111.0 F)
15.6 C (60.1 F)
n/a
n/a
Sep
45.0 C (113.0 F)
16.7 C (62.1 F)
n/a
n/a
Oct
41.7 C (107.1 F)
13.9 C (57.0 F)
n/a
n/a
Nov
42.8 C (109.0 F)
11.1 C (52.0 F)
n/a
n/a
Dec
41.7 C (107.1 F)
11.7 C (53.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Union Hidalgo still stand. 1987 holds the most, with 146.
Standing records at Union Hidalgo by the year they were set
Year set
Standing records
1943
35
1944
28
1945
25
1946
18
1947
23
1948
20
1949
11
1950
16
1951
46
1952
38
1953
42
1954
40
1955
31
1956
9
1957
42
1958
10
1959
19
1960
29
1961
9
1962
17
1963
14
1964
16
1965
11
1966
25
1967
17
1968
12
1969
25
1970
27
1971
6
1972
10
1973
17
1974
12
1975
6
1976
8
1977
18
1978
6
1979
14
1980
121
1981
77
1982
36
1983
61
1984
58
1985
75
1986
51
1987
146
1988
61
1989
26
All-Time Record Progression
8 new records
8 all-time records were set at Union Hidalgo between 8 May 1979 and 6 February 1984. Each dot is a new record.
When Union Hidalgo set new all-time records
Date
Kind
Detail
1979-05-08
Record high maximum temperature
Record high maximum temperature 41.7 C (107.1 F)
1981-02-08
Record high minimum temperature
Record high minimum temperature 30.0 C (86.0 F)
1981-03-08
Record high minimum temperature
Record high minimum temperature 31.7 C (89.1 F)
1981-04-25
Record high minimum temperature
Record high minimum temperature 32.8 C (91.0 F)
1982-09-10
Record high maximum temperature
Record high maximum temperature 42.2 C (108.0 F)
1982-09-18
Record high maximum temperature
Record high maximum temperature 45.0 C (113.0 F)
1984-02-05
Record low maximum temperature
Record low maximum temperature 17.2 C (63.0 F)
1984-02-06
Record low maximum temperature
Record low maximum temperature 16.7 C (62.1 F)
Wettest Day of Each Month
Jun: 216.4 mm (8.5 in)
The wettest day on record for each calendar month at Union Hidalgo. The most was 216.4 mm (8.5 in) on 11 June 1944.
Record daily precipitation for each month at Union Hidalgo
Month
Record daily precipitation (mm)
Date
Jan
35.8 mm (1.4 in)
6 January 1945
Feb
79.8 mm (3.1 in)
11 February 1968
Mar
65.3 mm (2.6 in)
19 March 1984
Apr
41.9 mm (1.6 in)
10 April 1980
May
95.8 mm (3.8 in)
31 May 1951
Jun
216.4 mm (8.5 in)
11 June 1944
Jul
182.9 mm (7.2 in)
14 July 1981
Aug
195.8 mm (7.7 in)
31 August 1973
Sep
213.9 mm (8.4 in)
20 September 1974
Oct
197.9 mm (7.8 in)
11 October 1950
Nov
111.8 mm (4.4 in)
4 November 1961
Dec
47.0 mm (1.9 in)
6 December 1969
Period of Record Coverage
1943 to 1989
Complete yearUnder 90 percent of days
47 years of record at Union Hidalgo, 1943 to 1989. 1 years have data for under 90 percent of days and are left out of rankings: 1989.
Cooler than the station meanWarmer than the station mean
One stripe for each of 45 complete years at Union Hidalgo, 1943 to 1988. Blue stripes are years cooler than the station's own mean of 27.4 C (81.3 F); red stripes are warmer. The coolest year was 1954, at 26.0 C (78.8 F), and the warmest was 1987, at 30.3 C (86.6 F). The strongest colour marks a difference of 3.0 C (5.4 F).
Annual mean temperature at Union Hidalgo as warming stripes, 1943 to 1988
Year
Annual mean temperature
Difference from the station mean
1943
27.3 C
-0.09 C
1944
27.5 C
+0.10 C
1945
28.0 C
+0.61 C
1946
27.6 C
+0.21 C
1947
27.5 C
+0.08 C
1948
27.8 C
+0.40 C
1949
27.8 C
+0.43 C
1950
26.9 C
-0.51 C
1951
26.5 C
-0.94 C
1952
26.1 C
-1.25 C
1953
26.3 C
-1.07 C
1954
26.0 C
-1.37 C
1955
26.4 C
-1.02 C
1956
26.8 C
-0.63 C
1957
26.9 C
-0.54 C
1958
27.1 C
-0.31 C
1959
26.6 C
-0.75 C
1960
26.6 C
-0.79 C
1961
26.7 C
-0.74 C
1962
26.8 C
-0.56 C
1963
26.9 C
-0.47 C
1964
26.7 C
-0.70 C
1965
26.8 C
-0.55 C
1966
26.3 C
-1.06 C
1967
26.5 C
-0.89 C
1968
26.6 C
-0.78 C
1969
27.1 C
-0.25 C
1970
26.7 C
-0.73 C
1971
27.1 C
-0.28 C
1972
27.9 C
+0.49 C
1973
27.2 C
-0.24 C
1974
27.2 C
-0.24 C
1975
27.2 C
-0.18 C
1976
26.7 C
-0.66 C
1977
27.7 C
+0.32 C
1978
27.2 C
-0.17 C
1979
27.0 C
-0.44 C
1981
27.5 C
+0.13 C
1982
28.5 C
+1.10 C
1983
30.0 C
+2.62 C
1984
28.7 C
+1.26 C
1985
29.9 C
+2.49 C
1986
29.6 C
+2.16 C
1987
30.3 C
+2.92 C
1988
30.3 C
+2.88 C
The annual mean temperature here has risen by 0.5 C (0.3 to 0.7) per decade over 1943 to 1988. In Fahrenheit: 0.8 F (0.5 to 1.2) per decade. The slope is a straight line fitted to 45 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Union Hidalgo
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.5 C (0.3 to 0.7) per decade
0.8 F (0.5 to 1.2) per decade
1943 to 1988
45
Rise
Mean daily maximum
0.9 C (0.5 to 1.3) per decade
1.7 F (0.9 to 2.4) per decade
1943 to 1988
45
Rise
Mean daily minimum
0.00 C (-0.12 to 0.12) per decade
0.00 F (-0.22 to 0.22) per decade
1943 to 1988
45
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
1943 to 1989
Yearly extremes at Union Hidalgo: 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)
1982
38.9 C (102.0 F)
47
Coldest night (TNn)
10.0 C (50.0 F)
1972
13.9 C (57.0 F)
47
Wettest day (Rx1day)
216.4 mm (8.5 in)
1944
111.8 mm (4.4 in)
47
Wettest five days (Rx5day)
514.1 mm (20.2 in)
1944
182.4 mm (7.2 in)
47
Longest dry spell (CDD)
156 days
1960
101 days
47
Hottest day (TXx)
The hottest day of the year at Union Hidalgo, 1943 to 1989. The record is 45.0 C (113.0 F) in 1982, marked on the chart; the median year is 38.9 C (102.0 F).
Hottest day (TXx) at Union Hidalgo by year
Year
Hottest day (TXx)
1943
38.9 C (102.0 F)
1944
38.9 C (102.0 F)
1945
40.0 C (104.0 F)
1946
38.9 C (102.0 F)
1947
40.0 C (104.0 F)
1948
40.6 C (105.1 F)
1949
40.6 C (105.1 F)
1950
38.3 C (100.9 F)
1951
36.7 C (98.1 F)
1952
38.3 C (100.9 F)
1953
38.9 C (102.0 F)
1954
38.3 C (100.9 F)
1955
37.8 C (100.0 F)
1956
38.9 C (102.0 F)
1957
38.9 C (102.0 F)
1958
40.0 C (104.0 F)
1959
39.4 C (102.9 F)
1960
38.3 C (100.9 F)
1961
38.9 C (102.0 F)
1962
37.8 C (100.0 F)
1963
38.9 C (102.0 F)
1964
37.8 C (100.0 F)
1965
38.9 C (102.0 F)
1966
38.9 C (102.0 F)
1967
38.9 C (102.0 F)
1968
38.9 C (102.0 F)
1969
39.4 C (102.9 F)
1970
38.9 C (102.0 F)
1971
40.0 C (104.0 F)
1972
39.4 C (102.9 F)
1973
38.9 C (102.0 F)
1974
38.9 C (102.0 F)
1975
38.9 C (102.0 F)
1976
38.9 C (102.0 F)
1977
40.0 C (104.0 F)
1978
40.0 C (104.0 F)
1979
41.7 C (107.1 F)
1980
41.7 C (107.1 F)
1981
38.9 C (102.0 F)
1982
45.0 C (113.0 F)
1983
43.9 C (111.0 F)
1984
43.3 C (109.9 F)
1985
43.9 C (111.0 F)
1986
42.8 C (109.0 F)
1987
43.9 C (111.0 F)
1988
42.8 C (109.0 F)
1989
42.2 C (108.0 F)
Coldest night (TNn)
The coldest night of the year at Union Hidalgo, 1943 to 1989. The record is 10.0 C (50.0 F) in 1972, marked on the chart; the median year is 13.9 C (57.0 F).
Coldest night (TNn) at Union Hidalgo by year
Year
Coldest night (TNn)
1943
12.8 C (55.0 F)
1944
12.8 C (55.0 F)
1945
13.9 C (57.0 F)
1946
15.6 C (60.1 F)
1947
11.7 C (53.1 F)
1948
15.0 C (59.0 F)
1949
11.7 C (53.1 F)
1950
15.0 C (59.0 F)
1951
12.8 C (55.0 F)
1952
15.6 C (60.1 F)
1953
15.0 C (59.0 F)
1954
14.4 C (57.9 F)
1955
12.2 C (54.0 F)
1956
12.2 C (54.0 F)
1957
13.9 C (57.0 F)
1958
13.9 C (57.0 F)
1959
11.1 C (52.0 F)
1960
12.8 C (55.0 F)
1961
13.9 C (57.0 F)
1962
10.6 C (51.1 F)
1963
11.7 C (53.1 F)
1964
10.6 C (51.1 F)
1965
15.0 C (59.0 F)
1966
14.4 C (57.9 F)
1967
11.7 C (53.1 F)
1968
13.3 C (55.9 F)
1969
13.9 C (57.0 F)
1970
12.2 C (54.0 F)
1971
14.4 C (57.9 F)
1972
10.0 C (50.0 F)
1973
12.8 C (55.0 F)
1974
13.9 C (57.0 F)
1975
11.7 C (53.1 F)
1976
13.9 C (57.0 F)
1977
15.0 C (59.0 F)
1978
11.7 C (53.1 F)
1979
15.0 C (59.0 F)
1980
11.7 C (53.1 F)
1981
16.7 C (62.1 F)
1982
14.4 C (57.9 F)
1983
13.9 C (57.0 F)
1984
12.8 C (55.0 F)
1985
13.9 C (57.0 F)
1986
13.9 C (57.0 F)
1987
13.9 C (57.0 F)
1988
15.0 C (59.0 F)
1989
18.9 C (66.0 F)
Wettest day (Rx1day)
The wettest day of the year at Union Hidalgo, 1943 to 1989. The record is 216.4 mm (8.5 in) in 1944, marked on the chart; the median year is 111.8 mm (4.4 in).
Wettest day (Rx1day) at Union Hidalgo by year
Year
Wettest day (Rx1day)
1943
85.1 mm (3.4 in)
1944
216.4 mm (8.5 in)
1945
169.9 mm (6.7 in)
1946
140.0 mm (5.5 in)
1947
129.8 mm (5.1 in)
1948
84.8 mm (3.3 in)
1949
64.8 mm (2.6 in)
1950
197.9 mm (7.8 in)
1951
153.9 mm (6.1 in)
1952
174.8 mm (6.9 in)
1953
179.8 mm (7.1 in)
1954
104.9 mm (4.1 in)
1955
199.9 mm (7.9 in)
1956
54.9 mm (2.2 in)
1957
64.3 mm (2.5 in)
1958
74.4 mm (2.9 in)
1959
86.9 mm (3.4 in)
1960
174.5 mm (6.9 in)
1961
111.8 mm (4.4 in)
1962
111.8 mm (4.4 in)
1963
132.8 mm (5.2 in)
1964
68.8 mm (2.7 in)
1965
73.9 mm (2.9 in)
1966
99.8 mm (3.9 in)
1967
116.8 mm (4.6 in)
1968
79.8 mm (3.1 in)
1969
134.9 mm (5.3 in)
1970
162.8 mm (6.4 in)
1971
95.0 mm (3.7 in)
1972
82.8 mm (3.3 in)
1973
195.8 mm (7.7 in)
1974
213.9 mm (8.4 in)
1975
131.8 mm (5.2 in)
1976
89.9 mm (3.5 in)
1977
59.9 mm (2.4 in)
1978
176.8 mm (7.0 in)
1979
132.3 mm (5.2 in)
1980
95.8 mm (3.8 in)
1981
182.9 mm (7.2 in)
1982
114.8 mm (4.5 in)
1983
73.9 mm (2.9 in)
1984
77.2 mm (3.0 in)
1985
69.9 mm (2.8 in)
1986
78.5 mm (3.1 in)
1987
54.9 mm (2.2 in)
1988
127.0 mm (5.0 in)
1989
47.8 mm (1.9 in)
Wettest five days (Rx5day)
The wettest five days of the year at Union Hidalgo, 1943 to 1989. The record is 514.1 mm (20.2 in) in 1944, marked on the chart; the median year is 182.4 mm (7.2 in).
Wettest five days (Rx5day) at Union Hidalgo by year
Year
Wettest five days (Rx5day)
1943
175.8 mm (6.9 in)
1944
514.1 mm (20.2 in)
1945
236.5 mm (9.3 in)
1946
226.7 mm (8.9 in)
1947
282.4 mm (11.1 in)
1948
155.2 mm (6.1 in)
1949
131.5 mm (5.2 in)
1950
489.5 mm (19.3 in)
1951
392.5 mm (15.5 in)
1952
289.6 mm (11.4 in)
1953
205.2 mm (8.1 in)
1954
204.2 mm (8.0 in)
1955
343.2 mm (13.5 in)
1956
100.3 mm (3.9 in)
1957
182.4 mm (7.2 in)
1958
166.9 mm (6.6 in)
1959
159.9 mm (6.3 in)
1960
332.3 mm (13.1 in)
1961
297.2 mm (11.7 in)
1962
133.4 mm (5.3 in)
1963
171.9 mm (6.8 in)
1964
161.6 mm (6.4 in)
1965
124.5 mm (4.9 in)
1966
124.9 mm (4.9 in)
1967
349.0 mm (13.7 in)
1968
119.7 mm (4.7 in)
1969
343.5 mm (13.5 in)
1970
307.9 mm (12.1 in)
1971
144.3 mm (5.7 in)
1972
153.5 mm (6.0 in)
1973
351.3 mm (13.8 in)
1974
410.8 mm (16.2 in)
1975
365.0 mm (14.4 in)
1976
189.8 mm (7.5 in)
1977
86.2 mm (3.4 in)
1978
210.1 mm (8.3 in)
1979
285.7 mm (11.2 in)
1980
219.5 mm (8.6 in)
1981
459.6 mm (18.1 in)
1982
143.8 mm (5.7 in)
1983
145.9 mm (5.7 in)
1984
133.9 mm (5.3 in)
1985
128.2 mm (5.0 in)
1986
166.1 mm (6.5 in)
1987
124.5 mm (4.9 in)
1988
138.2 mm (5.4 in)
1989
83.2 mm (3.3 in)
Longest dry spell (CDD)
The longest dry spell of the year at Union Hidalgo, 1943 to 1989. The record is 156 days in 1960, marked on the chart; the median year is 101 days.
Longest dry spell (CDD) at Union Hidalgo by year
Year
Longest dry spell (CDD)
1943
75 days
1944
84 days
1945
105 days
1946
57 days
1947
84 days
1948
67 days
1949
91 days
1950
132 days
1951
134 days
1952
85 days
1953
76 days
1954
119 days
1955
148 days
1956
115 days
1957
128 days
1958
98 days
1959
130 days
1960
156 days
1961
87 days
1962
108 days
1963
94 days
1964
129 days
1965
114 days
1966
92 days
1967
73 days
1968
65 days
1969
114 days
1970
67 days
1971
138 days
1972
88 days
1973
109 days
1974
121 days
1975
120 days
1976
89 days
1977
124 days
1978
83 days
1979
109 days
1980
94 days
1981
89 days
1982
87 days
1983
101 days
1984
93 days
1985
119 days
1986
132 days
1987
98 days
1988
132 days
1989
105 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
46 years, 1943 to 1988
A day with at least 112.2 mm (4.4 in) of rain is expected about once in 2 years. A day with at least 271.1 mm (10.7 in) of rain is expected about once in 100 years.
Rainfall return levels at Union Hidalgo: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
112.2 mm (4.4 in)
5 years
156.8 mm (6.2 in)
10 years
185.5 mm (7.3 in)
25 years
220.8 mm (8.7 in)
50 years
246.3 mm (9.7 in)
Longer than the 46 years of record
100 years
271.1 mm (10.7 in)
Longer than the 46 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, 46 years of values from 1943 to 1988.
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: 216.4 mm (8.5 in) in 1944; 213.9 mm (8.4 in) in 1974; 199.9 mm (7.9 in) in 1955.
Station Changes
2 suspected
2 changes were suspected in the annual mean temperature of Union Hidalgo, at 1956 and 1983. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1956 ran 0.4 C (0.7 F) higher than in the years before (possible change).
Relative to 5 neighbouring stations, the station's annual mean temperature from 1983 ran 1.5 C (2.6 F) higher than in the years before (likely change).
Suspected changes in the annual mean temperature at Union Hidalgo, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1956
+0.4
+0.7
possible
5
1983
+1.5
+2.6
likely
5
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 Union Hidalgo standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Union Hidalgo 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.