Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Trelew Aero. 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 Trelew Aero, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
42.6 C (108.7 F)
3.0 C (37.4 F)
n/a
n/a
Feb
41.0 C (105.8 F)
1.5 C (34.7 F)
n/a
n/a
Mar
40.0 C (104.0 F)
-1.7 C (28.9 F)
n/a
n/a
Apr
35.2 C (95.4 F)
-5.1 C (22.8 F)
n/a
n/a
May
31.0 C (87.8 F)
-8.5 C (16.7 F)
n/a
n/a
Jun
27.7 C (81.9 F)
-12.3 C (9.9 F)
n/a
n/a
Jul
25.6 C (78.1 F)
-13.2 C (8.2 F)
n/a
n/a
Aug
26.0 C (78.8 F)
-10.6 C (12.9 F)
n/a
n/a
Sep
33.0 C (91.4 F)
-8.0 C (17.6 F)
n/a
n/a
Oct
36.4 C (97.5 F)
-5.0 C (23.0 F)
n/a
n/a
Nov
38.3 C (100.9 F)
-2.0 C (28.4 F)
n/a
n/a
Dec
40.5 C (104.9 F)
0.5 C (32.9 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Trelew Aero still stand. 1959 holds the most, with 35.
Standing records at Trelew Aero by the year they were set
Year set
Standing records
1956
31
1957
13
1958
32
1959
35
1960
35
1961
24
1962
20
1963
27
1964
14
1965
25
1966
26
1967
30
1968
17
1969
15
1970
16
1971
20
1972
26
1973
8
1974
23
1975
22
1976
30
1977
24
1978
13
1979
30
1980
20
1981
14
1982
25
1983
19
1984
31
1985
17
1986
27
1987
26
1988
15
1989
21
1990
23
1991
26
1992
22
1993
35
1994
26
1995
35
1996
35
1997
23
1998
21
1999
21
2000
24
2001
32
2002
30
2003
25
2004
16
2005
14
2006
14
2007
18
2008
16
2009
17
2010
13
2011
7
2012
15
2013
8
2014
20
2015
20
2016
9
2017
9
2018
12
2019
15
2020
15
2021
16
2022
16
2023
24
2024
14
2025
7
All-Time Record Progression
5 new records
5 all-time records were set at Trelew Aero between 17 June 1995 and 2 July 2025. Each dot is a new record.
When Trelew Aero set new all-time records
Date
Kind
Detail
1995-06-17
Record low minimum temperature
Record low minimum temperature -11.0 C (12.2 F)
1995-07-30
Record low minimum temperature
Record low minimum temperature -11.4 C (11.5 F)
2002-06-22
Record low minimum temperature
Record low minimum temperature -12.3 C (9.9 F)
2024-01-24
Record high maximum temperature
Record high maximum temperature 42.6 C (108.7 F)
2025-07-02
Record low minimum temperature
Record low minimum temperature -13.2 C (8.2 F)
Wettest Day of Each Month
Feb: 151.1 mm (5.9 in)
The wettest day on record for each calendar month at Trelew Aero. The most was 151.1 mm (5.9 in) on 9 February 2018.
Record daily precipitation for each month at Trelew Aero
Month
Record daily precipitation (mm)
Date
Jan
80.0 mm (3.1 in)
2 January 1984
Feb
151.1 mm (5.9 in)
9 February 2018
Mar
135.9 mm (5.4 in)
11 March 2008
Apr
135.9 mm (5.4 in)
7 April 2020
May
64.0 mm (2.5 in)
12 May 1992
Jun
54.1 mm (2.1 in)
20 June 1978
Jul
46.0 mm (1.8 in)
28 July 2006
Aug
41.1 mm (1.6 in)
6 August 2008
Sep
35.1 mm (1.4 in)
29 September 2010
Oct
90.9 mm (3.6 in)
7 October 1993
Nov
29.5 mm (1.2 in)
1 November 1999
Dec
48.0 mm (1.9 in)
11 December 1991
Period of Record Coverage
1956 to 2025
Complete yearUnder 90 percent of days
70 years of record at Trelew Aero, 1956 to 2025. 22 years have data for under 90 percent of days and are left out of rankings: 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 44 complete years at Trelew Aero, 1958 to 2003. Blue stripes are years cooler than the station's own mean of 13.8 C (56.8 F); red stripes are warmer. The coolest year was 2002, at 12.7 C (54.9 F), and the warmest was 1989, at 14.7 C (58.5 F). The strongest colour marks a difference of 1.1 C (2.0 F).
Annual mean temperature at Trelew Aero as warming stripes, 1958 to 2003
Year
Annual mean temperature
Difference from the station mean
1958
14.0 C
+0.17 C
1959
13.6 C
-0.18 C
1960
14.3 C
+0.54 C
1961
13.7 C
-0.10 C
1962
14.3 C
+0.45 C
1963
13.7 C
-0.07 C
1964
13.4 C
-0.44 C
1965
14.0 C
+0.22 C
1966
14.0 C
+0.17 C
1967
14.2 C
+0.35 C
1968
14.5 C
+0.73 C
1969
14.2 C
+0.40 C
1970
14.0 C
+0.21 C
1971
13.5 C
-0.26 C
1972
13.4 C
-0.37 C
1974
13.4 C
-0.36 C
1975
14.1 C
+0.34 C
1976
13.0 C
-0.78 C
1977
14.1 C
+0.27 C
1979
14.4 C
+0.62 C
1980
14.2 C
+0.38 C
1981
14.1 C
+0.34 C
1982
14.1 C
+0.26 C
1983
14.2 C
+0.36 C
1984
12.9 C
-0.93 C
1985
14.2 C
+0.39 C
1986
13.8 C
-0.03 C
1987
14.3 C
+0.46 C
1988
13.6 C
-0.25 C
1989
14.7 C
+0.93 C
1990
14.6 C
+0.78 C
1991
13.8 C
0.00 C
1992
13.1 C
-0.71 C
1993
13.5 C
-0.32 C
1994
13.9 C
+0.05 C
1995
13.0 C
-0.77 C
1996
13.5 C
-0.28 C
1997
13.6 C
-0.23 C
1998
14.3 C
+0.54 C
1999
13.6 C
-0.18 C
2000
12.9 C
-0.93 C
2001
13.4 C
-0.36 C
2002
12.7 C
-1.08 C
2003
13.7 C
-0.12 C
The annual mean temperature here has fallen by 0.11 C (0.00 to 0.22) per decade over 1958 to 2003. In Fahrenheit: 0.20 F (0.01 to 0.39) per decade. The slope is a straight line fitted to 44 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Trelew Aero
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.11 C (-0.21 to 0.00) per decade
-0.20 F (-0.39 to -0.01) per decade
1958 to 2003
44
Fall
Mean daily maximum
0.10 C (-0.03 to 0.23) per decade
0.2 F (-0.1 to 0.4) per decade
1958 to 2003
44
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
1958 to 2003
44
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
1956 to 2025
Yearly extremes at Trelew Aero: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
42.6 C (108.7 F)
2024
39.2 C (102.5 F)
70
Coldest night (TNn)
-13.2 C (8.2 F)
2025
-7.5 C (18.4 F)
70
Wettest day (Rx1day)
151.1 mm (5.9 in)
2018
29.5 mm (1.2 in)
55
Wettest five days (Rx5day)
163.3 mm (6.4 in)
2014
33.0 mm (1.3 in)
52
Longest dry spell (CDD)
43 days
1998
8 days
55
Hottest day (TXx)
The hottest day of the year at Trelew Aero, 1956 to 2025. The record is 42.6 C (108.7 F) in 2024, marked on the chart; the median year is 39.2 C (102.5 F).
Hottest day (TXx) at Trelew Aero by year
Year
Hottest day (TXx)
1956
38.4 C (101.1 F)
1957
39.6 C (103.3 F)
1958
39.4 C (102.9 F)
1959
39.2 C (102.6 F)
1960
39.8 C (103.6 F)
1961
40.4 C (104.7 F)
1962
40.6 C (105.1 F)
1963
39.2 C (102.6 F)
1964
37.1 C (98.8 F)
1965
41.3 C (106.3 F)
1966
39.4 C (102.9 F)
1967
39.2 C (102.6 F)
1968
40.3 C (104.5 F)
1969
37.5 C (99.5 F)
1970
36.7 C (98.1 F)
1971
37.3 C (99.1 F)
1972
39.8 C (103.6 F)
1973
38.9 C (102.0 F)
1974
38.0 C (100.4 F)
1975
36.5 C (97.7 F)
1976
37.2 C (99.0 F)
1977
38.8 C (101.8 F)
1978
39.7 C (103.5 F)
1979
39.2 C (102.6 F)
1980
39.2 C (102.6 F)
1981
39.1 C (102.4 F)
1982
40.5 C (104.9 F)
1983
40.5 C (104.9 F)
1984
39.3 C (102.7 F)
1985
38.0 C (100.4 F)
1986
39.0 C (102.2 F)
1987
40.8 C (105.4 F)
1988
38.0 C (100.4 F)
1989
40.7 C (105.3 F)
1990
37.2 C (99.0 F)
1991
38.6 C (101.5 F)
1992
38.7 C (101.7 F)
1993
40.0 C (104.0 F)
1994
38.0 C (100.4 F)
1995
40.4 C (104.7 F)
1996
37.5 C (99.5 F)
1997
38.2 C (100.8 F)
1998
37.5 C (99.5 F)
1999
37.3 C (99.1 F)
2000
37.5 C (99.5 F)
2001
37.5 C (99.5 F)
2002
39.3 C (102.7 F)
2003
40.0 C (104.0 F)
2004
40.3 C (104.5 F)
2005
38.0 C (100.4 F)
2006
39.5 C (103.1 F)
2007
37.2 C (99.0 F)
2008
38.5 C (101.3 F)
2009
39.9 C (103.8 F)
2010
36.5 C (97.7 F)
2011
36.2 C (97.2 F)
2012
39.7 C (103.5 F)
2013
38.0 C (100.4 F)
2014
41.2 C (106.2 F)
2015
38.3 C (100.9 F)
2016
39.6 C (103.3 F)
2017
38.6 C (101.5 F)
2018
39.2 C (102.6 F)
2019
41.0 C (105.8 F)
2020
39.0 C (102.2 F)
2021
40.1 C (104.2 F)
2022
39.0 C (102.2 F)
2023
39.5 C (103.1 F)
2024
42.6 C (108.7 F)
2025
38.6 C (101.5 F)
Coldest night (TNn)
The coldest night of the year at Trelew Aero, 1956 to 2025. The record is -13.2 C (8.2 F) in 2025, marked on the chart; the median year is -7.5 C (18.4 F).
Coldest night (TNn) at Trelew Aero by year
Year
Coldest night (TNn)
1956
-8.7 C (16.3 F)
1957
-3.8 C (25.2 F)
1958
-8.0 C (17.6 F)
1959
-7.1 C (19.2 F)
1960
-9.0 C (15.8 F)
1961
-5.8 C (21.6 F)
1962
-5.9 C (21.4 F)
1963
-8.2 C (17.2 F)
1964
-8.2 C (17.2 F)
1965
-6.2 C (20.8 F)
1966
-7.8 C (18.0 F)
1967
-9.8 C (14.4 F)
1968
-7.7 C (18.1 F)
1969
-4.5 C (23.9 F)
1970
-8.2 C (17.2 F)
1971
-6.2 C (20.8 F)
1972
-8.3 C (17.1 F)
1973
-5.7 C (21.7 F)
1974
-6.2 C (20.8 F)
1975
-5.2 C (22.6 F)
1976
-10.7 C (12.7 F)
1977
-10.8 C (12.6 F)
1978
-5.0 C (23.0 F)
1979
-6.7 C (19.9 F)
1980
-6.4 C (20.5 F)
1981
-4.8 C (23.4 F)
1982
-6.8 C (19.8 F)
1983
-6.5 C (20.3 F)
1984
-8.3 C (17.1 F)
1985
-7.2 C (19.0 F)
1986
-10.2 C (13.6 F)
1987
-5.2 C (22.6 F)
1988
-8.5 C (16.7 F)
1989
-7.4 C (18.7 F)
1990
-8.0 C (17.6 F)
1991
-7.4 C (18.7 F)
1992
-9.1 C (15.6 F)
1993
-10.5 C (13.1 F)
1994
-8.0 C (17.6 F)
1995
-11.4 C (11.5 F)
1996
-10.5 C (13.1 F)
1997
-10.6 C (12.9 F)
1998
-6.8 C (19.8 F)
1999
-7.7 C (18.1 F)
2000
-8.0 C (17.6 F)
2001
-9.0 C (15.8 F)
2002
-12.3 C (9.9 F)
2003
-4.8 C (23.4 F)
2004
-6.7 C (19.9 F)
2005
-7.0 C (19.4 F)
2006
-6.8 C (19.8 F)
2007
-9.2 C (15.4 F)
2008
-8.0 C (17.6 F)
2009
-5.6 C (21.9 F)
2010
-8.4 C (16.9 F)
2011
-7.5 C (18.5 F)
2012
-9.0 C (15.8 F)
2013
-5.0 C (23.0 F)
2014
-10.2 C (13.6 F)
2015
-8.0 C (17.6 F)
2016
-7.4 C (18.7 F)
2017
-4.6 C (23.7 F)
2018
-5.6 C (21.9 F)
2019
-5.7 C (21.7 F)
2020
-7.6 C (18.3 F)
2021
-7.5 C (18.5 F)
2022
-10.1 C (13.8 F)
2023
-6.8 C (19.8 F)
2024
-7.0 C (19.4 F)
2025
-13.2 C (8.2 F)
Wettest day (Rx1day)
The wettest day of the year at Trelew Aero, 1956 to 2025. The record is 151.1 mm (5.9 in) in 2018, marked on the chart; the median year is 29.5 mm (1.2 in).
Wettest day (Rx1day) at Trelew Aero by year
Year
Wettest day (Rx1day)
1956
n/a
1957
n/a
1958
n/a
1959
n/a
1960
n/a
1961
n/a
1962
n/a
1963
n/a
1964
n/a
1965
n/a
1966
n/a
1967
20.1 mm (0.8 in)
1968
10.9 mm (0.4 in)
1969
n/a
1970
n/a
1971
n/a
1972
n/a
1973
7.1 mm (0.28 in)
1974
22.1 mm (0.9 in)
1975
16.0 mm (0.6 in)
1976
22.1 mm (0.9 in)
1977
31.0 mm (1.2 in)
1978
54.1 mm (2.1 in)
1979
34.0 mm (1.3 in)
1980
32.0 mm (1.3 in)
1981
34.0 mm (1.3 in)
1982
4.1 mm (0.16 in)
1983
34.0 mm (1.3 in)
1984
100.1 mm (3.9 in)
1985
0.0 mm (0.00 in)
1986
4.1 mm (0.16 in)
1987
23.1 mm (0.9 in)
1988
14.0 mm (0.6 in)
1989
29.0 mm (1.1 in)
1990
27.9 mm (1.1 in)
1991
48.0 mm (1.9 in)
1992
64.0 mm (2.5 in)
1993
90.9 mm (3.6 in)
1994
22.1 mm (0.9 in)
1995
46.0 mm (1.8 in)
1996
19.1 mm (0.8 in)
1997
59.9 mm (2.4 in)
1998
112.0 mm (4.4 in)
1999
29.5 mm (1.2 in)
2000
13.2 mm (0.5 in)
2001
8.4 mm (0.33 in)
2002
20.6 mm (0.8 in)
2003
126.0 mm (5.0 in)
2004
29.0 mm (1.1 in)
2005
23.1 mm (0.9 in)
2006
46.0 mm (1.8 in)
2007
26.9 mm (1.1 in)
2008
135.9 mm (5.4 in)
2009
18.0 mm (0.7 in)
2010
35.1 mm (1.4 in)
2011
20.1 mm (0.8 in)
2012
20.1 mm (0.8 in)
2013
33.0 mm (1.3 in)
2014
87.1 mm (3.4 in)
2015
39.9 mm (1.6 in)
2016
13.0 mm (0.5 in)
2017
47.0 mm (1.9 in)
2018
151.1 mm (5.9 in)
2019
111.3 mm (4.4 in)
2020
135.9 mm (5.4 in)
2021
40.9 mm (1.6 in)
2022
33.0 mm (1.3 in)
2023
10.9 mm (0.4 in)
2024
52.1 mm (2.1 in)
2025
13.0 mm (0.5 in)
Wettest five days (Rx5day)
The wettest five days of the year at Trelew Aero, 1956 to 2025. The record is 163.3 mm (6.4 in) in 2014, marked on the chart; the median year is 33.0 mm (1.3 in).
Wettest five days (Rx5day) at Trelew Aero by year
Year
Wettest five days (Rx5day)
1956
n/a
1957
n/a
1958
n/a
1959
n/a
1960
n/a
1961
n/a
1962
n/a
1963
n/a
1964
n/a
1965
n/a
1966
n/a
1967
n/a
1968
8.6 mm (0.34 in)
1969
n/a
1970
n/a
1971
n/a
1972
n/a
1973
18.3 mm (0.7 in)
1974
45.1 mm (1.8 in)
1975
16.5 mm (0.6 in)
1976
43.2 mm (1.7 in)
1977
32.0 mm (1.3 in)
1978
54.9 mm (2.2 in)
1979
45.2 mm (1.8 in)
1980
39.6 mm (1.6 in)
1981
34.0 mm (1.3 in)
1982
4.4 mm (0.17 in)
1983
73.1 mm (2.9 in)
1984
25.4 mm (1.0 in)
1985
0.0 mm (0.00 in)
1986
0.0 mm (0.00 in)
1987
34.2 mm (1.3 in)
1988
18.0 mm (0.7 in)
1989
7.9 mm (0.31 in)
1990
56.9 mm (2.2 in)
1991
23.1 mm (0.9 in)
1992
68.3 mm (2.7 in)
1993
90.9 mm (3.6 in)
1994
22.1 mm (0.9 in)
1995
70.9 mm (2.8 in)
1996
7.6 mm (0.30 in)
1997
80.8 mm (3.2 in)
1998
138.4 mm (5.4 in)
1999
19.1 mm (0.8 in)
2000
0.0 mm (0.00 in)
2001
n/a
2002
34.1 mm (1.3 in)
2003
145.0 mm (5.7 in)
2004
31.3 mm (1.2 in)
2005
38.1 mm (1.5 in)
2006
57.9 mm (2.3 in)
2007
45.9 mm (1.8 in)
2008
52.1 mm (2.1 in)
2009
0.8 mm (0.03 in)
2010
n/a
2011
30.3 mm (1.2 in)
2012
42.2 mm (1.7 in)
2013
44.4 mm (1.7 in)
2014
163.3 mm (6.4 in)
2015
10.6 mm (0.4 in)
2016
27.1 mm (1.1 in)
2017
35.7 mm (1.4 in)
2018
16.0 mm (0.6 in)
2019
59.6 mm (2.3 in)
2020
26.2 mm (1.0 in)
2021
20.1 mm (0.8 in)
2022
53.8 mm (2.1 in)
2023
13.4 mm (0.5 in)
2024
16.5 mm (0.6 in)
2025
19.1 mm (0.8 in)
Longest dry spell (CDD)
The longest dry spell of the year at Trelew Aero, 1956 to 2025. The record is 43 days in 1998, marked on the chart; the median year is 8 days.
Longest dry spell (CDD) at Trelew Aero by year
Year
Longest dry spell (CDD)
1956
n/a
1957
n/a
1958
n/a
1959
n/a
1960
n/a
1961
n/a
1962
n/a
1963
n/a
1964
n/a
1965
n/a
1966
n/a
1967
3 days
1968
3 days
1969
n/a
1970
n/a
1971
n/a
1972
n/a
1973
29 days
1974
30 days
1975
8 days
1976
9 days
1977
27 days
1978
16 days
1979
21 days
1980
22 days
1981
14 days
1982
8 days
1983
9 days
1984
8 days
1985
8 days
1986
11 days
1987
8 days
1988
13 days
1989
9 days
1990
15 days
1991
6 days
1992
7 days
1993
8 days
1994
13 days
1995
10 days
1996
16 days
1997
18 days
1998
43 days
1999
12 days
2000
3 days
2001
2 days
2002
14 days
2003
26 days
2004
27 days
2005
23 days
2006
3 days
2007
3 days
2008
3 days
2009
5 days
2010
2 days
2011
3 days
2012
3 days
2013
5 days
2014
3 days
2015
5 days
2016
4 days
2017
7 days
2018
4 days
2019
4 days
2020
5 days
2021
4 days
2022
4 days
2023
5 days
2024
4 days
2025
5 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
44 years with a frost
Across 44 years with a frost, the median last spring frost at Trelew Aero falls on 8 October and the median first autumn frost on 21 April, which leaves a median of 197 days between them.
Fitted over all years, the growing season changes by -8.9 days per decade at this station.
Frost dates and growing season at Trelew Aero
Measure
Median, all years
Earliest period
Recent period (1972 to 2003)
Recent against earliest
Fitted trend
Last spring frost
8 October
n/a
11 October
n/a
+4.5 days per decade
First autumn frost
21 April
n/a
20 April
n/a
-4.4 days per decade
Growing days
197 days
n/a
195 days
n/a
-8.9 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.
Download the Data
Data for Trelew Aero standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Trelew Aero 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.