Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Colonia Morelos. 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 Colonia Morelos, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
40.0 C (104.0 F)
-12.2 C (10.0 F)
n/a
n/a
Feb
40.0 C (104.0 F)
-12.2 C (10.0 F)
n/a
n/a
Mar
40.6 C (105.1 F)
-8.3 C (17.1 F)
n/a
n/a
Apr
47.8 C (118.0 F)
-5.0 C (23.0 F)
n/a
n/a
May
48.9 C (120.0 F)
0.6 C (33.1 F)
n/a
n/a
Jun
48.9 C (120.0 F)
2.8 C (37.0 F)
n/a
n/a
Jul
48.9 C (120.0 F)
1.7 C (35.1 F)
n/a
n/a
Aug
48.9 C (120.0 F)
3.9 C (39.0 F)
n/a
n/a
Sep
48.9 C (120.0 F)
2.8 C (37.0 F)
n/a
n/a
Oct
48.9 C (120.0 F)
-2.2 C (28.0 F)
n/a
n/a
Nov
43.9 C (111.0 F)
-7.2 C (19.0 F)
n/a
n/a
Dec
40.6 C (105.1 F)
-16.1 C (3.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Colonia Morelos still stand. 2006 holds the most, with 150.
Standing records at Colonia Morelos by the year they were set
Year set
Standing records
1964
7
1965
43
1966
17
1967
17
1968
17
1969
30
1970
14
1971
35
1972
14
1973
18
1974
18
1975
31
1976
38
1977
25
1978
16
1979
29
1980
17
1981
20
1982
21
1983
27
1984
24
1985
24
1986
17
1987
28
1991
25
1992
36
1993
12
1994
7
1995
18
1996
26
1997
9
1998
8
2000
57
2001
53
2002
103
2003
22
2004
79
2005
132
2006
150
2007
84
2008
62
2009
20
2010
7
2011
7
All-Time Record Progression
3 new records
3 all-time records were set at Colonia Morelos between 4 June 2001 and 19 July 2004. Each dot is a new record.
When Colonia Morelos set new all-time records
Date
Kind
Detail
2001-06-04
Record high maximum temperature
Record high maximum temperature 48.9 C (120.0 F)
2004-07-11
Record high minimum temperature
Record high minimum temperature 30.0 C (86.0 F)
2004-07-19
Record high minimum temperature
Record high minimum temperature 30.6 C (87.1 F)
Wettest Day of Each Month
Oct: 100.8 mm (4.0 in)
The wettest day on record for each calendar month at Colonia Morelos. The most was 100.8 mm (4.0 in) on 9 October 1977.
Record daily precipitation for each month at Colonia Morelos
Month
Record daily precipitation (mm)
Date
Jan
55.9 mm (2.2 in)
18 January 1993
Feb
52.8 mm (2.1 in)
13 February 1980
Mar
33.8 mm (1.3 in)
3 March 1983
Apr
51.8 mm (2.0 in)
26 April 1985
May
37.8 mm (1.5 in)
5 May 1973
Jun
39.9 mm (1.6 in)
26 June 2009
Jul
71.9 mm (2.8 in)
19 July 1985
Aug
69.9 mm (2.8 in)
10 August 1985
Sep
50.8 mm (2.0 in)
22 September 1981
Oct
100.8 mm (4.0 in)
9 October 1977
Nov
64.8 mm (2.6 in)
11 November 1994
Dec
77.0 mm (3.0 in)
5 December 1994
Period of Record Coverage
1964 to 2011
Complete yearUnder 90 percent of days
45 years of record at Colonia Morelos, 1964 to 2011. 11 years have data for under 90 percent of days and are left out of rankings: 1964, 1991, 1993, 1999, 2000, 2001, 2002, 2004 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 35 complete years at Colonia Morelos, 1965 to 2010. Blue stripes are years cooler than the station's own mean of 19.4 C (67.0 F); red stripes are warmer. The coolest year was 1992, at 17.3 C (63.1 F), and the warmest was 2006, at 25.3 C (77.5 F). The strongest colour marks a difference of 5.9 C (10.6 F).
Annual mean temperature at Colonia Morelos as warming stripes, 1965 to 2010
Year
Annual mean temperature
Difference from the station mean
1965
22.1 C
+2.69 C
1966
21.4 C
+2.00 C
1967
20.5 C
+1.07 C
1968
18.9 C
-0.49 C
1969
19.6 C
+0.17 C
1970
19.1 C
-0.35 C
1971
18.2 C
-1.19 C
1972
19.3 C
-0.18 C
1973
18.8 C
-0.65 C
1974
19.1 C
-0.31 C
1975
17.7 C
-1.70 C
1976
17.6 C
-1.84 C
1977
18.2 C
-1.25 C
1978
18.6 C
-0.88 C
1979
18.2 C
-1.20 C
1980
18.8 C
-0.62 C
1981
18.5 C
-0.90 C
1982
18.1 C
-1.31 C
1983
17.5 C
-1.93 C
1984
18.0 C
-1.39 C
1985
18.0 C
-1.48 C
1986
18.4 C
-1.02 C
1987
17.8 C
-1.64 C
1992
17.3 C
-2.14 C
1995
17.7 C
-1.70 C
1996
18.0 C
-1.43 C
1997
18.7 C
-0.77 C
1998
17.9 C
-1.53 C
2002
22.1 C
+2.69 C
2003
21.4 C
+1.96 C
2004
23.5 C
+4.05 C
2005
25.0 C
+5.55 C
2006
25.3 C
+5.84 C
2009
21.2 C
+1.75 C
2010
19.4 C
-0.01 C
The annual mean temperature here has risen by 0.5 C (0.1 to 1.0) per decade over 1965 to 2010. In Fahrenheit: 1.0 F (0.1 to 1.9) 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 Colonia Morelos
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.5 C (0.1 to 1.0) per decade
1.0 F (0.1 to 1.9) per decade
1965 to 2010
35
Rise
Mean daily maximum
1.1 C (0.4 to 1.7) per decade
1.9 F (0.7 to 3.1) per decade
1965 to 2010
35
Rise
Mean daily minimum
0.02 C (-0.44 to 0.49) per decade
0.04 F (-0.79 to 0.88) per decade
1965 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
1964 to 2011
Yearly extremes at Colonia Morelos: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
48.9 C (120.0 F)
2001
43.9 C (111.0 F)
45
Coldest night (TNn)
-16.1 C (3.0 F)
1978
-5.6 C (21.9 F)
45
Wettest day (Rx1day)
100.8 mm (4.0 in)
1977
34.8 mm (1.4 in)
45
Wettest five days (Rx5day)
173.2 mm (6.8 in)
1977
54.9 mm (2.2 in)
45
Longest dry spell (CDD)
161 days
2008
86 days
45
Hottest day (TXx)
The hottest day of the year at Colonia Morelos, 1964 to 2011. The record is 48.9 C (120.0 F) in 2001, marked on the chart; the median year is 43.9 C (111.0 F).
Hottest day (TXx) at Colonia Morelos by year
Year
Hottest day (TXx)
1964
42.2 C (108.0 F)
1965
47.8 C (118.0 F)
1966
45.0 C (113.0 F)
1967
43.3 C (109.9 F)
1968
43.9 C (111.0 F)
1969
43.9 C (111.0 F)
1970
43.9 C (111.0 F)
1971
42.8 C (109.0 F)
1972
43.9 C (111.0 F)
1973
45.0 C (113.0 F)
1974
43.9 C (111.0 F)
1975
40.6 C (105.1 F)
1976
40.0 C (104.0 F)
1977
40.6 C (105.1 F)
1978
43.9 C (111.0 F)
1979
43.9 C (111.0 F)
1980
43.9 C (111.0 F)
1981
41.1 C (106.0 F)
1982
41.1 C (106.0 F)
1983
40.0 C (104.0 F)
1984
40.6 C (105.1 F)
1985
42.8 C (109.0 F)
1986
40.6 C (105.1 F)
1987
40.6 C (105.1 F)
1991
45.0 C (113.0 F)
1992
45.0 C (113.0 F)
1993
41.7 C (107.1 F)
1994
40.6 C (105.1 F)
1995
41.7 C (107.1 F)
1996
41.7 C (107.1 F)
1997
45.6 C (114.1 F)
1998
45.0 C (113.0 F)
1999
23.9 C (75.0 F)
2000
45.0 C (113.0 F)
2001
48.9 C (120.0 F)
2002
48.9 C (120.0 F)
2003
48.9 C (120.0 F)
2004
48.9 C (120.0 F)
2005
48.9 C (120.0 F)
2006
48.9 C (120.0 F)
2007
48.9 C (120.0 F)
2008
48.9 C (120.0 F)
2009
48.9 C (120.0 F)
2010
48.9 C (120.0 F)
2011
41.7 C (107.1 F)
Coldest night (TNn)
The coldest night of the year at Colonia Morelos, 1964 to 2011. The record is -16.1 C (3.0 F) in 1978, marked on the chart; the median year is -5.6 C (21.9 F).
Coldest night (TNn) at Colonia Morelos by year
Year
Coldest night (TNn)
1964
1.1 C (34.0 F)
1965
5.0 C (41.0 F)
1966
1.7 C (35.1 F)
1967
0.6 C (33.1 F)
1968
0.0 C (32.0 F)
1969
-2.2 C (28.0 F)
1970
-6.7 C (19.9 F)
1971
-12.2 C (10.0 F)
1972
-6.1 C (21.0 F)
1973
-6.1 C (21.0 F)
1974
-5.0 C (23.0 F)
1975
-7.2 C (19.0 F)
1976
-6.1 C (21.0 F)
1977
-6.1 C (21.0 F)
1978
-16.1 C (3.0 F)
1979
-7.2 C (19.0 F)
1980
-5.0 C (23.0 F)
1981
-5.6 C (21.9 F)
1982
-6.1 C (21.0 F)
1983
-5.0 C (23.0 F)
1984
-5.0 C (23.0 F)
1985
-6.1 C (21.0 F)
1986
-5.0 C (23.0 F)
1987
-6.1 C (21.0 F)
1991
-6.1 C (21.0 F)
1992
-7.2 C (19.0 F)
1993
-5.0 C (23.0 F)
1994
-5.0 C (23.0 F)
1995
-5.0 C (23.0 F)
1996
-10.0 C (14.0 F)
1997
-6.1 C (21.0 F)
1998
-5.0 C (23.0 F)
1999
-4.4 C (24.1 F)
2000
-3.3 C (26.1 F)
2001
-8.3 C (17.1 F)
2002
-8.3 C (17.1 F)
2003
-4.4 C (24.1 F)
2004
-6.1 C (21.0 F)
2005
-5.0 C (23.0 F)
2006
1.7 C (35.1 F)
2007
0.0 C (32.0 F)
2008
-8.3 C (17.1 F)
2009
-5.0 C (23.0 F)
2010
-6.1 C (21.0 F)
2011
-12.2 C (10.0 F)
Wettest day (Rx1day)
The wettest day of the year at Colonia Morelos, 1964 to 2011. The record is 100.8 mm (4.0 in) in 1977, marked on the chart; the median year is 34.8 mm (1.4 in).
Wettest day (Rx1day) at Colonia Morelos by year
Year
Wettest day (Rx1day)
1964
34.8 mm (1.4 in)
1965
18.8 mm (0.7 in)
1966
42.4 mm (1.7 in)
1967
45.5 mm (1.8 in)
1968
34.8 mm (1.4 in)
1969
39.9 mm (1.6 in)
1970
35.8 mm (1.4 in)
1971
25.9 mm (1.0 in)
1972
32.8 mm (1.3 in)
1973
37.8 mm (1.5 in)
1974
33.8 mm (1.3 in)
1975
34.8 mm (1.4 in)
1976
25.9 mm (1.0 in)
1977
100.8 mm (4.0 in)
1978
30.0 mm (1.2 in)
1979
31.0 mm (1.2 in)
1980
52.8 mm (2.1 in)
1981
50.8 mm (2.0 in)
1982
23.9 mm (0.9 in)
1983
43.9 mm (1.7 in)
1984
36.8 mm (1.4 in)
1985
71.9 mm (2.8 in)
1986
42.9 mm (1.7 in)
1987
31.0 mm (1.2 in)
1991
24.9 mm (1.0 in)
1992
42.4 mm (1.7 in)
1993
55.9 mm (2.2 in)
1994
77.0 mm (3.0 in)
1995
39.9 mm (1.6 in)
1996
26.9 mm (1.1 in)
1997
28.4 mm (1.1 in)
1998
39.9 mm (1.6 in)
1999
0.0 mm (0.00 in)
2000
46.0 mm (1.8 in)
2001
29.0 mm (1.1 in)
2002
67.8 mm (2.7 in)
2003
19.8 mm (0.8 in)
2004
47.8 mm (1.9 in)
2005
29.0 mm (1.1 in)
2006
34.8 mm (1.4 in)
2007
26.9 mm (1.1 in)
2008
49.8 mm (2.0 in)
2009
39.9 mm (1.6 in)
2010
23.9 mm (0.9 in)
2011
24.9 mm (1.0 in)
Wettest five days (Rx5day)
The wettest five days of the year at Colonia Morelos, 1964 to 2011. The record is 173.2 mm (6.8 in) in 1977, marked on the chart; the median year is 54.9 mm (2.2 in).
Wettest five days (Rx5day) at Colonia Morelos by year
Year
Wettest five days (Rx5day)
1964
37.1 mm (1.5 in)
1965
28.7 mm (1.1 in)
1966
45.2 mm (1.8 in)
1967
112.3 mm (4.4 in)
1968
44.7 mm (1.8 in)
1969
70.9 mm (2.8 in)
1970
42.7 mm (1.7 in)
1971
46.3 mm (1.8 in)
1972
35.8 mm (1.4 in)
1973
42.4 mm (1.7 in)
1974
41.6 mm (1.6 in)
1975
96.3 mm (3.8 in)
1976
62.2 mm (2.4 in)
1977
173.2 mm (6.8 in)
1978
37.3 mm (1.5 in)
1979
33.3 mm (1.3 in)
1980
55.6 mm (2.2 in)
1981
50.8 mm (2.0 in)
1982
54.9 mm (2.2 in)
1983
71.9 mm (2.8 in)
1984
75.2 mm (3.0 in)
1985
121.7 mm (4.8 in)
1986
67.3 mm (2.6 in)
1987
67.6 mm (2.7 in)
1991
40.9 mm (1.6 in)
1992
43.5 mm (1.7 in)
1993
69.9 mm (2.8 in)
1994
83.9 mm (3.3 in)
1995
67.6 mm (2.7 in)
1996
40.4 mm (1.6 in)
1997
59.7 mm (2.4 in)
1998
57.7 mm (2.3 in)
1999
0.0 mm (0.00 in)
2000
92.0 mm (3.6 in)
2001
40.6 mm (1.6 in)
2002
77.8 mm (3.1 in)
2003
31.7 mm (1.2 in)
2004
84.9 mm (3.3 in)
2005
43.4 mm (1.7 in)
2006
44.7 mm (1.8 in)
2007
38.4 mm (1.5 in)
2008
81.5 mm (3.2 in)
2009
90.4 mm (3.6 in)
2010
44.1 mm (1.7 in)
2011
65.5 mm (2.6 in)
Longest dry spell (CDD)
The longest dry spell of the year at Colonia Morelos, 1964 to 2011. The record is 161 days in 2008, marked on the chart; the median year is 86 days.
Longest dry spell (CDD) at Colonia Morelos by year
Year
Longest dry spell (CDD)
1964
60 days
1965
88 days
1966
141 days
1967
102 days
1968
86 days
1969
72 days
1970
89 days
1971
119 days
1972
149 days
1973
128 days
1974
118 days
1975
94 days
1976
65 days
1977
69 days
1978
50 days
1979
73 days
1980
69 days
1981
56 days
1982
67 days
1983
89 days
1984
91 days
1985
81 days
1986
75 days
1987
79 days
1991
39 days
1992
48 days
1993
112 days
1994
35 days
1995
124 days
1996
136 days
1997
57 days
1998
44 days
1999
31 days
2000
73 days
2001
83 days
2002
86 days
2003
111 days
2004
54 days
2005
141 days
2006
138 days
2007
110 days
2008
161 days
2009
129 days
2010
75 days
2011
151 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 Colonia Morelos falls on 26 March and the median first autumn frost on 15 November, which leaves a median of 239 days between them.
Fitted over all years, the growing season changes by +10.0 days per decade at this station.
Frost dates and growing season at Colonia Morelos
Measure
Median, all years
Earliest period
Recent period (1969 to 2010)
Recent against earliest
Fitted trend
Last spring frost
26 March
n/a
26 March
n/a
-5.1 days per decade
First autumn frost
15 November
n/a
15 November
n/a
+4.9 days per decade
Growing days
239 days
n/a
239 days
n/a
+10.0 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
38 years, 1965 to 2010
A day with at least 35.8 mm (1.4 in) of rain is expected about once in 2 years. A day with at least 104.3 mm (4.1 in) of rain is expected about once in 100 years.
Rainfall return levels at Colonia Morelos: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
35.8 mm (1.4 in)
5 years
49.2 mm (1.9 in)
10 years
59.8 mm (2.4 in)
25 years
75.4 mm (3.0 in)
50 years
89.0 mm (3.5 in)
Longer than the 38 years of record
100 years
104.3 mm (4.1 in)
Longer than the 38 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, 38 years of values from 1965 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: 100.8 mm (4.0 in) in 1977; 77.0 mm (3.0 in) in 1994; 71.9 mm (2.8 in) in 1985.
Download the Data
Data for Colonia Morelos standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Colonia Morelos 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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.