Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Juan Aldama. 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 Juan Aldama, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
30.0 C (86.0 F)
-7.8 C (18.0 F)
n/a
n/a
Feb
30.0 C (86.0 F)
-11.7 C (10.9 F)
n/a
n/a
Mar
35.6 C (96.1 F)
-5.0 C (23.0 F)
n/a
n/a
Apr
36.7 C (98.1 F)
-2.2 C (28.0 F)
n/a
n/a
May
38.9 C (102.0 F)
5.0 C (41.0 F)
n/a
n/a
Jun
39.4 C (102.9 F)
9.4 C (48.9 F)
n/a
n/a
Jul
38.9 C (102.0 F)
5.6 C (42.1 F)
n/a
n/a
Aug
35.0 C (95.0 F)
7.8 C (46.0 F)
n/a
n/a
Sep
35.0 C (95.0 F)
3.9 C (39.0 F)
n/a
n/a
Oct
35.6 C (96.1 F)
-3.9 C (25.0 F)
n/a
n/a
Nov
30.6 C (87.1 F)
-10.0 C (14.0 F)
n/a
n/a
Dec
30.6 C (87.1 F)
-14.4 C (6.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Juan Aldama still stand. 1980 holds the most, with 84.
Standing records at Juan Aldama by the year they were set
Year set
Standing records
1963
18
1964
28
1965
33
1966
24
1967
49
1968
28
1969
34
1970
41
1971
33
1972
59
1973
40
1974
68
1975
20
1976
37
1977
63
1978
46
1979
39
1980
84
1981
39
1982
41
1983
34
1984
26
1985
6
1987
12
1988
28
1989
27
1990
17
1991
21
1992
50
1993
17
1994
12
1995
17
1996
17
1997
47
1998
19
1999
17
2000
26
2001
19
2002
17
2003
35
2005
21
2006
33
2007
23
2008
22
2009
10
2010
34
2011
22
2012
11
All-Time Record Progression
1 new records
1 all-time records were set at Juan Aldama between 13 December 1997 and 13 December 1997. Each dot is a new record.
When Juan Aldama set new all-time records
Date
Kind
Detail
1997-12-13
Record low minimum temperature
Record low minimum temperature -14.4 C (6.1 F)
Wettest Day of Each Month
Sep: 79.8 mm (3.1 in)
The wettest day on record for each calendar month at Juan Aldama. The most was 79.8 mm (3.1 in) on 29 September 1976.
Record daily precipitation for each month at Juan Aldama
Month
Record daily precipitation (mm)
Date
Jan
23.4 mm (0.9 in)
25 January 2006
Feb
28.4 mm (1.1 in)
25 February 2005
Mar
33.8 mm (1.3 in)
3 March 1968
Apr
21.6 mm (0.9 in)
13 April 2008
May
37.8 mm (1.5 in)
26 May 1983
Jun
57.4 mm (2.3 in)
15 June 1981
Jul
78.5 mm (3.1 in)
5 July 1981
Aug
74.4 mm (2.9 in)
16 August 1983
Sep
79.8 mm (3.1 in)
29 September 1976
Oct
51.8 mm (2.0 in)
1 October 1970
Nov
49.3 mm (1.9 in)
25 November 1982
Dec
37.6 mm (1.5 in)
2 December 1965
Period of Record Coverage
1963 to 2012
Complete yearUnder 90 percent of days
48 years of record at Juan Aldama, 1963 to 2012. 9 years have data for under 90 percent of days and are left out of rankings: 1963, 1973, 1985, 1987, 2002, 2008, 2009, 2011 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 30 complete years at Juan Aldama, 1965 to 2007. Blue stripes are years cooler than the station's own mean of 18.0 C (64.4 F); red stripes are warmer. The coolest year was 1997, at 16.3 C (61.4 F), and the warmest was 1972, at 19.4 C (66.9 F). The strongest colour marks a difference of 1.7 C (3.1 F).
Annual mean temperature at Juan Aldama as warming stripes, 1965 to 2007
Year
Annual mean temperature
Difference from the station mean
1965
18.1 C
+0.04 C
1966
17.7 C
-0.32 C
1969
18.7 C
+0.68 C
1970
18.6 C
+0.55 C
1971
19.4 C
+1.34 C
1972
19.4 C
+1.39 C
1974
19.4 C
+1.38 C
1975
18.2 C
+0.21 C
1976
17.7 C
-0.33 C
1977
18.6 C
+0.62 C
1978
18.3 C
+0.30 C
1979
18.3 C
+0.25 C
1980
19.3 C
+1.28 C
1981
18.8 C
+0.73 C
1982
19.3 C
+1.23 C
1983
18.3 C
+0.25 C
1984
17.7 C
-0.32 C
1988
18.0 C
-0.07 C
1989
18.6 C
+0.60 C
1990
18.5 C
+0.45 C
1994
17.5 C
-0.52 C
1995
17.5 C
-0.53 C
1996
17.2 C
-0.85 C
1997
16.3 C
-1.69 C
1998
17.3 C
-0.76 C
1999
16.9 C
-1.11 C
2000
17.2 C
-0.87 C
2003
16.8 C
-1.25 C
2006
16.8 C
-1.19 C
2007
16.6 C
-1.46 C
The annual mean temperature here has fallen by 0.5 C (0.4 to 0.7) per decade over 1965 to 2007. In Fahrenheit: 1.0 F (0.6 to 1.3) per decade. The slope is a straight line fitted to 30 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Juan Aldama
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.5 C (-0.7 to -0.4) per decade
-1.0 F (-1.3 to -0.6) per decade
1965 to 2007
30
Fall
Mean daily maximum
-0.6 C (-0.9 to -0.4) per decade
-1.1 F (-1.5 to -0.6) per decade
1965 to 2007
30
Fall
Mean daily minimum
-0.5 C (-0.7 to -0.2) per decade
-0.8 F (-1.3 to -0.4) per decade
1965 to 2007
30
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
1963 to 2012
Yearly extremes at Juan Aldama: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
39.4 C (102.9 F)
1982
36.1 C (97.0 F)
48
Coldest night (TNn)
-14.4 C (6.1 F)
1997
-5.0 C (23.0 F)
48
Wettest day (Rx1day)
79.8 mm (3.1 in)
1976
40.0 mm (1.6 in)
48
Wettest five days (Rx5day)
151.7 mm (6.0 in)
2003
73.5 mm (2.9 in)
48
Longest dry spell (CDD)
163 days
1976
90 days
48
Hottest day (TXx)
The hottest day of the year at Juan Aldama, 1963 to 2012. The record is 39.4 C (102.9 F) in 1982, marked on the chart; the median year is 36.1 C (97.0 F).
Hottest day (TXx) at Juan Aldama by year
Year
Hottest day (TXx)
1963
32.8 C (91.0 F)
1964
36.7 C (98.1 F)
1965
37.2 C (99.0 F)
1966
37.8 C (100.0 F)
1967
38.9 C (102.0 F)
1968
37.2 C (99.0 F)
1969
37.8 C (100.0 F)
1970
37.8 C (100.0 F)
1971
36.7 C (98.1 F)
1972
36.7 C (98.1 F)
1973
37.8 C (100.0 F)
1974
37.8 C (100.0 F)
1975
36.7 C (98.1 F)
1976
37.2 C (99.0 F)
1977
38.9 C (102.0 F)
1978
36.7 C (98.1 F)
1979
33.9 C (93.0 F)
1980
36.1 C (97.0 F)
1981
35.6 C (96.1 F)
1982
39.4 C (102.9 F)
1983
37.8 C (100.0 F)
1984
36.7 C (98.1 F)
1985
26.1 C (79.0 F)
1987
35.0 C (95.0 F)
1988
35.0 C (95.0 F)
1989
38.3 C (100.9 F)
1990
37.8 C (100.0 F)
1991
36.1 C (97.0 F)
1992
36.1 C (97.0 F)
1993
35.6 C (96.1 F)
1994
33.9 C (93.0 F)
1995
37.8 C (100.0 F)
1996
37.8 C (100.0 F)
1997
35.0 C (95.0 F)
1998
35.0 C (95.0 F)
1999
35.0 C (95.0 F)
2000
33.3 C (91.9 F)
2001
33.9 C (93.0 F)
2002
35.0 C (95.0 F)
2003
35.0 C (95.0 F)
2005
35.6 C (96.1 F)
2006
33.9 C (93.0 F)
2007
33.9 C (93.0 F)
2008
35.0 C (95.0 F)
2009
30.0 C (86.0 F)
2010
35.0 C (95.0 F)
2011
36.1 C (97.0 F)
2012
35.0 C (95.0 F)
Coldest night (TNn)
The coldest night of the year at Juan Aldama, 1963 to 2012. The record is -14.4 C (6.1 F) in 1997, marked on the chart; the median year is -5.0 C (23.0 F).
Coldest night (TNn) at Juan Aldama by year
Year
Coldest night (TNn)
1963
-5.0 C (23.0 F)
1964
-5.0 C (23.0 F)
1965
-5.0 C (23.0 F)
1966
-5.0 C (23.0 F)
1967
-7.8 C (18.0 F)
1968
-5.0 C (23.0 F)
1969
-3.3 C (26.1 F)
1970
-3.9 C (25.0 F)
1971
-3.3 C (26.1 F)
1972
0.0 C (32.0 F)
1973
-5.6 C (21.9 F)
1974
-2.2 C (28.0 F)
1975
-5.6 C (21.9 F)
1976
-2.2 C (28.0 F)
1977
-2.2 C (28.0 F)
1978
-2.2 C (28.0 F)
1979
-8.3 C (17.1 F)
1980
-3.3 C (26.1 F)
1981
-3.3 C (26.1 F)
1982
-1.7 C (28.9 F)
1983
-5.0 C (23.0 F)
1984
0.0 C (32.0 F)
1985
-6.1 C (21.0 F)
1987
0.0 C (32.0 F)
1988
-4.4 C (24.1 F)
1989
0.0 C (32.0 F)
1990
-1.1 C (30.0 F)
1991
-1.7 C (28.9 F)
1992
-5.0 C (23.0 F)
1993
-1.1 C (30.0 F)
1994
-6.1 C (21.0 F)
1995
-2.8 C (27.0 F)
1996
-6.1 C (21.0 F)
1997
-14.4 C (6.1 F)
1998
-5.0 C (23.0 F)
1999
-7.2 C (19.0 F)
2000
-5.0 C (23.0 F)
2001
-7.2 C (19.0 F)
2002
-5.0 C (23.0 F)
2003
-5.6 C (21.9 F)
2005
-3.3 C (26.1 F)
2006
-6.1 C (21.0 F)
2007
-3.9 C (25.0 F)
2008
-7.2 C (19.0 F)
2009
-4.4 C (24.1 F)
2010
-6.7 C (19.9 F)
2011
-11.7 C (10.9 F)
2012
-3.9 C (25.0 F)
Wettest day (Rx1day)
The wettest day of the year at Juan Aldama, 1963 to 2012. The record is 79.8 mm (3.1 in) in 1976, marked on the chart; the median year is 40.0 mm (1.6 in).
Wettest day (Rx1day) at Juan Aldama by year
Year
Wettest day (Rx1day)
1963
19.6 mm (0.8 in)
1964
29.5 mm (1.2 in)
1965
37.6 mm (1.5 in)
1966
31.5 mm (1.2 in)
1967
36.3 mm (1.4 in)
1968
38.9 mm (1.5 in)
1969
32.3 mm (1.3 in)
1970
65.8 mm (2.6 in)
1971
39.9 mm (1.6 in)
1972
45.0 mm (1.8 in)
1973
49.8 mm (2.0 in)
1974
43.4 mm (1.7 in)
1975
48.3 mm (1.9 in)
1976
79.8 mm (3.1 in)
1977
46.5 mm (1.8 in)
1978
73.4 mm (2.9 in)
1979
63.5 mm (2.5 in)
1980
34.3 mm (1.4 in)
1981
78.5 mm (3.1 in)
1982
49.3 mm (1.9 in)
1983
74.4 mm (2.9 in)
1984
47.0 mm (1.9 in)
1985
11.4 mm (0.4 in)
1987
19.8 mm (0.8 in)
1988
71.6 mm (2.8 in)
1989
34.5 mm (1.4 in)
1990
44.5 mm (1.8 in)
1991
49.3 mm (1.9 in)
1992
21.3 mm (0.8 in)
1993
19.8 mm (0.8 in)
1994
22.9 mm (0.9 in)
1995
33.8 mm (1.3 in)
1996
39.9 mm (1.6 in)
1997
38.9 mm (1.5 in)
1998
38.6 mm (1.5 in)
1999
51.1 mm (2.0 in)
2000
42.4 mm (1.7 in)
2001
23.9 mm (0.9 in)
2002
49.5 mm (1.9 in)
2003
71.4 mm (2.8 in)
2005
28.4 mm (1.1 in)
2006
36.3 mm (1.4 in)
2007
44.7 mm (1.8 in)
2008
51.6 mm (2.0 in)
2009
46.0 mm (1.8 in)
2010
40.1 mm (1.6 in)
2011
31.8 mm (1.3 in)
2012
21.3 mm (0.8 in)
Wettest five days (Rx5day)
The wettest five days of the year at Juan Aldama, 1963 to 2012. The record is 151.7 mm (6.0 in) in 2003, marked on the chart; the median year is 73.5 mm (2.9 in).
Wettest five days (Rx5day) at Juan Aldama by year
Year
Wettest five days (Rx5day)
1963
46.1 mm (1.8 in)
1964
59.9 mm (2.4 in)
1965
65.0 mm (2.6 in)
1966
70.9 mm (2.8 in)
1967
67.8 mm (2.7 in)
1968
74.5 mm (2.9 in)
1969
34.6 mm (1.4 in)
1970
111.5 mm (4.4 in)
1971
115.3 mm (4.5 in)
1972
68.1 mm (2.7 in)
1973
95.8 mm (3.8 in)
1974
66.9 mm (2.6 in)
1975
109.3 mm (4.3 in)
1976
144.4 mm (5.7 in)
1977
94.2 mm (3.7 in)
1978
121.7 mm (4.8 in)
1979
125.8 mm (5.0 in)
1980
50.3 mm (2.0 in)
1981
118.3 mm (4.7 in)
1982
49.3 mm (1.9 in)
1983
138.7 mm (5.5 in)
1984
82.3 mm (3.2 in)
1985
21.6 mm (0.9 in)
1987
31.8 mm (1.3 in)
1988
87.9 mm (3.5 in)
1989
72.4 mm (2.9 in)
1990
91.8 mm (3.6 in)
1991
140.7 mm (5.5 in)
1992
33.4 mm (1.3 in)
1993
44.7 mm (1.8 in)
1994
46.5 mm (1.8 in)
1995
57.2 mm (2.3 in)
1996
85.3 mm (3.4 in)
1997
45.8 mm (1.8 in)
1998
51.9 mm (2.0 in)
1999
80.9 mm (3.2 in)
2000
92.3 mm (3.6 in)
2001
35.1 mm (1.4 in)
2002
83.0 mm (3.3 in)
2003
151.7 mm (6.0 in)
2005
35.3 mm (1.4 in)
2006
63.2 mm (2.5 in)
2007
81.8 mm (3.2 in)
2008
85.1 mm (3.4 in)
2009
132.7 mm (5.2 in)
2010
103.4 mm (4.1 in)
2011
59.3 mm (2.3 in)
2012
35.3 mm (1.4 in)
Longest dry spell (CDD)
The longest dry spell of the year at Juan Aldama, 1963 to 2012. The record is 163 days in 1976, marked on the chart; the median year is 90 days.
Longest dry spell (CDD) at Juan Aldama by year
Year
Longest dry spell (CDD)
1963
21 days
1964
90 days
1965
71 days
1966
53 days
1967
55 days
1968
60 days
1969
128 days
1970
90 days
1971
132 days
1972
148 days
1973
70 days
1974
137 days
1975
136 days
1976
163 days
1977
151 days
1978
140 days
1979
132 days
1980
158 days
1981
110 days
1982
111 days
1983
129 days
1984
106 days
1985
44 days
1987
53 days
1988
95 days
1989
89 days
1990
78 days
1991
123 days
1992
38 days
1993
110 days
1994
55 days
1995
95 days
1996
111 days
1997
39 days
1998
111 days
1999
155 days
2000
57 days
2001
88 days
2002
50 days
2003
82 days
2005
42 days
2006
76 days
2007
93 days
2008
40 days
2009
72 days
2010
96 days
2011
90 days
2012
49 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
24 years with a frost
Across 24 years with a frost, the median last spring frost at Juan Aldama falls on 6 March and the median first autumn frost on 21 November, which leaves a median of 277 days between them.
Frost dates and growing season at Juan Aldama
Measure
Median, all years
Earliest period
Recent period (1965 to 2007)
Recent against earliest
Fitted trend
Last spring frost
6 March
n/a
6 March
n/a
n/a
First autumn frost
21 November
n/a
21 November
n/a
n/a
Growing days
277 days
n/a
277 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
39 years, 1964 to 2010
A day with at least 41.9 mm (1.6 in) of rain is expected about once in 2 years. A day with at least 98.4 mm (3.9 in) of rain is expected about once in 100 years.
Rainfall return levels at Juan Aldama: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
41.9 mm (1.6 in)
5 years
56.7 mm (2.2 in)
10 years
66.6 mm (2.6 in)
25 years
79.3 mm (3.1 in)
50 years
88.8 mm (3.5 in)
Longer than the 39 years of record
100 years
98.4 mm (3.9 in)
Longer than the 39 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, 39 years of values from 1964 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: 79.8 mm (3.1 in) in 1976; 78.5 mm (3.1 in) in 1981; 74.4 mm (2.9 in) in 1983.
Download the Data
Data for Juan Aldama standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Juan Aldama 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.