Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Hornos. 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 Hornos, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
37.8 C (100.0 F)
-5.0 C (23.0 F)
n/a
n/a
Feb
38.9 C (102.0 F)
-1.1 C (30.0 F)
n/a
n/a
Mar
40.6 C (105.1 F)
0.0 C (32.0 F)
n/a
n/a
Apr
42.8 C (109.0 F)
1.7 C (35.1 F)
n/a
n/a
May
45.0 C (113.0 F)
5.6 C (42.1 F)
n/a
n/a
Jun
48.3 C (118.9 F)
8.9 C (48.0 F)
n/a
n/a
Jul
46.7 C (116.1 F)
14.4 C (57.9 F)
n/a
n/a
Aug
45.0 C (113.0 F)
17.8 C (64.0 F)
n/a
n/a
Sep
45.0 C (113.0 F)
16.1 C (61.0 F)
n/a
n/a
Oct
45.0 C (113.0 F)
5.6 C (42.1 F)
n/a
n/a
Nov
38.9 C (102.0 F)
0.6 C (33.1 F)
n/a
n/a
Dec
36.7 C (98.1 F)
-1.1 C (30.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Hornos still stand. 1962 holds the most, with 80.
Standing records at Hornos by the year they were set
Year set
Standing records
1960
52
1961
62
1962
80
1963
42
1964
41
1965
38
1966
22
1967
47
1968
26
1969
31
1970
48
1971
54
1972
25
1973
36
1974
27
1975
29
1976
16
1977
44
1978
39
1979
40
1980
28
1981
29
1982
26
1983
26
1984
25
1985
26
1986
29
1989
4
1990
13
1991
12
1992
23
1993
17
1994
19
1995
12
1996
14
1997
18
1998
21
1999
13
2000
32
2001
19
2002
13
2003
29
2004
38
2005
39
2006
31
2007
32
2008
31
2009
20
2010
20
2011
6
Wettest Day of Each Month
Oct: 239.8 mm (9.4 in)
The wettest day on record for each calendar month at Hornos. The most was 239.8 mm (9.4 in) on 20 October 1978.
Record daily precipitation for each month at Hornos
Month
Record daily precipitation (mm)
Date
Jan
103.9 mm (4.1 in)
27 January 1968
Feb
49.8 mm (2.0 in)
11 February 2005
Mar
38.4 mm (1.5 in)
27 March 1992
Apr
14.0 mm (0.6 in)
22 April 1981
May
4.3 mm (0.17 in)
12 May 1993
Jun
59.9 mm (2.4 in)
28 June 2009
Jul
108.7 mm (4.3 in)
25 July 1968
Aug
119.9 mm (4.7 in)
29 August 1977
Sep
119.4 mm (4.7 in)
30 September 2001
Oct
239.8 mm (9.4 in)
20 October 1978
Nov
47.0 mm (1.9 in)
4 November 1993
Dec
51.3 mm (2.0 in)
27 December 1972
Period of Record Coverage
1960 to 2011
Complete yearUnder 90 percent of days
50 years of record at Hornos, 1960 to 2011. 7 years have data for under 90 percent of days and are left out of rankings: 1960, 1973, 1986, 1989, 1990, 1991, 2011.
Cooler than the station meanWarmer than the station mean
One stripe for each of 42 complete years at Hornos, 1961 to 2010. Blue stripes are years cooler than the station's own mean of 23.9 C (75.0 F); red stripes are warmer. The coolest year was 1971, at 22.5 C (72.6 F), and the warmest was 2003, at 25.2 C (77.4 F). The strongest colour marks a difference of 1.4 C (2.5 F).
Annual mean temperature at Hornos as warming stripes, 1961 to 2010
Year
Annual mean temperature
Difference from the station mean
1961
23.7 C
-0.21 C
1962
24.7 C
+0.82 C
1963
24.6 C
+0.67 C
1964
23.3 C
-0.60 C
1965
23.7 C
-0.15 C
1966
24.2 C
+0.30 C
1967
23.9 C
+0.01 C
1968
23.4 C
-0.47 C
1969
23.6 C
-0.24 C
1970
23.3 C
-0.55 C
1971
22.5 C
-1.34 C
1972
23.6 C
-0.26 C
1974
23.4 C
-0.51 C
1975
22.9 C
-1.03 C
1976
23.6 C
-0.27 C
1977
24.2 C
+0.29 C
1978
23.9 C
+0.03 C
1979
22.9 C
-0.94 C
1980
23.7 C
-0.16 C
1981
24.2 C
+0.32 C
1982
23.7 C
-0.20 C
1983
23.9 C
-0.01 C
1984
23.7 C
-0.18 C
1985
23.8 C
-0.09 C
1992
23.8 C
-0.10 C
1993
24.0 C
+0.13 C
1994
24.1 C
+0.18 C
1995
24.3 C
+0.41 C
1996
24.4 C
+0.50 C
1997
24.2 C
+0.29 C
1998
23.9 C
+0.03 C
2000
24.3 C
+0.43 C
2001
24.0 C
+0.11 C
2002
24.5 C
+0.60 C
2003
25.2 C
+1.33 C
2004
24.1 C
+0.24 C
2005
25.1 C
+1.19 C
2006
24.8 C
+0.96 C
2007
24.0 C
+0.16 C
2008
23.1 C
-0.81 C
2009
23.2 C
-0.64 C
2010
23.6 C
-0.32 C
The annual mean temperature here has risen by 0.11 C (0.00 to 0.22) per decade over 1961 to 2010. In Fahrenheit: 0.20 F (0.01 to 0.40) per decade. The slope is a straight line fitted to 42 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Hornos
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.11 C (0.00 to 0.22) per decade
0.20 F (0.01 to 0.40) per decade
1961 to 2010
42
Rise
Mean daily maximum
0.17 C (-0.02 to 0.36) per decade
0.30 F (-0.05 to 0.64) per decade
1961 to 2010
42
Not clearly different from zero
Mean daily minimum
0.1 C (-0.1 to 0.2) per decade
0.1 F (-0.2 to 0.4) per decade
1961 to 2010
42
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
1960 to 2011
Yearly extremes at Hornos: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
48.3 C (118.9 F)
1964
43.9 C (111.0 F)
50
Coldest night (TNn)
-5.0 C (23.0 F)
1971
1.7 C (35.1 F)
50
Wettest day (Rx1day)
239.8 mm (9.4 in)
1978
64.2 mm (2.5 in)
50
Wettest five days (Rx5day)
243.1 mm (9.6 in)
1978
87.5 mm (3.4 in)
50
Longest dry spell (CDD)
182 days
2011
108 days
50
Hottest day (TXx)
The hottest day of the year at Hornos, 1960 to 2011. The record is 48.3 C (118.9 F) in 1964, marked on the chart; the median year is 43.9 C (111.0 F).
Hottest day (TXx) at Hornos by year
Year
Hottest day (TXx)
1960
43.9 C (111.0 F)
1961
45.0 C (113.0 F)
1962
45.0 C (113.0 F)
1963
44.4 C (111.9 F)
1964
48.3 C (118.9 F)
1965
42.8 C (109.0 F)
1966
44.4 C (111.9 F)
1967
42.8 C (109.0 F)
1968
44.4 C (111.9 F)
1969
43.3 C (109.9 F)
1970
45.0 C (113.0 F)
1971
41.7 C (107.1 F)
1972
42.2 C (108.0 F)
1973
41.7 C (107.1 F)
1974
41.1 C (106.0 F)
1975
42.8 C (109.0 F)
1976
43.3 C (109.9 F)
1977
41.7 C (107.1 F)
1978
41.7 C (107.1 F)
1979
45.0 C (113.0 F)
1980
44.4 C (111.9 F)
1981
43.9 C (111.0 F)
1982
44.4 C (111.9 F)
1983
44.4 C (111.9 F)
1984
42.8 C (109.0 F)
1985
42.2 C (108.0 F)
1986
42.2 C (108.0 F)
1989
41.7 C (107.1 F)
1990
45.0 C (113.0 F)
1991
41.7 C (107.1 F)
1992
41.7 C (107.1 F)
1993
43.9 C (111.0 F)
1994
43.9 C (111.0 F)
1995
43.9 C (111.0 F)
1996
43.9 C (111.0 F)
1997
45.0 C (113.0 F)
1998
45.0 C (113.0 F)
1999
45.0 C (113.0 F)
2000
43.9 C (111.0 F)
2001
45.0 C (113.0 F)
2002
45.0 C (113.0 F)
2003
45.6 C (114.1 F)
2004
42.8 C (109.0 F)
2005
45.6 C (114.1 F)
2006
46.7 C (116.1 F)
2007
46.7 C (116.1 F)
2008
45.0 C (113.0 F)
2009
42.8 C (109.0 F)
2010
43.9 C (111.0 F)
2011
41.7 C (107.1 F)
Coldest night (TNn)
The coldest night of the year at Hornos, 1960 to 2011. The record is -5.0 C (23.0 F) in 1971, marked on the chart; the median year is 1.7 C (35.1 F).
Coldest night (TNn) at Hornos by year
Year
Coldest night (TNn)
1960
0.0 C (32.0 F)
1961
3.9 C (39.0 F)
1962
0.0 C (32.0 F)
1963
0.6 C (33.1 F)
1964
-1.1 C (30.0 F)
1965
0.6 C (33.1 F)
1966
-1.1 C (30.0 F)
1967
1.1 C (34.0 F)
1968
1.7 C (35.1 F)
1969
1.7 C (35.1 F)
1970
1.7 C (35.1 F)
1971
-5.0 C (23.0 F)
1972
1.1 C (34.0 F)
1973
0.6 C (33.1 F)
1974
2.8 C (37.0 F)
1975
1.1 C (34.0 F)
1976
1.7 C (35.1 F)
1977
3.9 C (39.0 F)
1978
0.0 C (32.0 F)
1979
2.8 C (37.0 F)
1980
4.4 C (39.9 F)
1981
2.2 C (36.0 F)
1982
1.7 C (35.1 F)
1983
4.4 C (39.9 F)
1984
0.0 C (32.0 F)
1985
4.4 C (39.9 F)
1986
5.6 C (42.1 F)
1989
10.6 C (51.1 F)
1990
5.0 C (41.0 F)
1991
3.9 C (39.0 F)
1992
3.9 C (39.0 F)
1993
6.1 C (43.0 F)
1994
5.6 C (42.1 F)
1995
5.0 C (41.0 F)
1996
4.4 C (39.9 F)
1997
2.8 C (37.0 F)
1998
1.7 C (35.1 F)
1999
3.9 C (39.0 F)
2000
2.2 C (36.0 F)
2001
-1.1 C (30.0 F)
2002
1.7 C (35.1 F)
2003
0.6 C (33.1 F)
2004
0.6 C (33.1 F)
2005
3.9 C (39.0 F)
2006
1.7 C (35.1 F)
2007
0.0 C (32.0 F)
2008
1.7 C (35.1 F)
2009
2.8 C (37.0 F)
2010
3.9 C (39.0 F)
2011
-1.1 C (30.0 F)
Wettest day (Rx1day)
The wettest day of the year at Hornos, 1960 to 2011. The record is 239.8 mm (9.4 in) in 1978, marked on the chart; the median year is 64.2 mm (2.5 in).
Wettest day (Rx1day) at Hornos by year
Year
Wettest day (Rx1day)
1960
37.8 mm (1.5 in)
1961
63.0 mm (2.5 in)
1962
49.8 mm (2.0 in)
1963
52.8 mm (2.1 in)
1964
43.9 mm (1.7 in)
1965
33.8 mm (1.3 in)
1966
65.3 mm (2.6 in)
1967
51.6 mm (2.0 in)
1968
108.7 mm (4.3 in)
1969
81.5 mm (3.2 in)
1970
39.9 mm (1.6 in)
1971
37.8 mm (1.5 in)
1972
51.3 mm (2.0 in)
1973
29.2 mm (1.1 in)
1974
43.7 mm (1.7 in)
1975
84.1 mm (3.3 in)
1976
69.3 mm (2.7 in)
1977
119.9 mm (4.7 in)
1978
239.8 mm (9.4 in)
1979
53.1 mm (2.1 in)
1980
103.9 mm (4.1 in)
1981
71.9 mm (2.8 in)
1982
48.8 mm (1.9 in)
1983
83.8 mm (3.3 in)
1984
55.6 mm (2.2 in)
1985
57.9 mm (2.3 in)
1986
91.9 mm (3.6 in)
1989
46.0 mm (1.8 in)
1990
58.4 mm (2.3 in)
1991
39.9 mm (1.6 in)
1992
55.4 mm (2.2 in)
1993
65.3 mm (2.6 in)
1994
48.0 mm (1.9 in)
1995
65.3 mm (2.6 in)
1996
54.9 mm (2.2 in)
1997
37.3 mm (1.5 in)
1998
101.9 mm (4.0 in)
1999
71.9 mm (2.8 in)
2000
41.4 mm (1.6 in)
2001
119.4 mm (4.7 in)
2002
66.3 mm (2.6 in)
2003
71.4 mm (2.8 in)
2004
105.9 mm (4.2 in)
2005
89.4 mm (3.5 in)
2006
71.9 mm (2.8 in)
2007
97.8 mm (3.9 in)
2008
70.9 mm (2.8 in)
2009
105.9 mm (4.2 in)
2010
83.8 mm (3.3 in)
2011
48.3 mm (1.9 in)
Wettest five days (Rx5day)
The wettest five days of the year at Hornos, 1960 to 2011. The record is 243.1 mm (9.6 in) in 1978, marked on the chart; the median year is 87.5 mm (3.4 in).
Wettest five days (Rx5day) at Hornos by year
Year
Wettest five days (Rx5day)
1960
58.6 mm (2.3 in)
1961
68.6 mm (2.7 in)
1962
79.8 mm (3.1 in)
1963
97.4 mm (3.8 in)
1964
75.2 mm (3.0 in)
1965
63.8 mm (2.5 in)
1966
85.4 mm (3.4 in)
1967
133.5 mm (5.3 in)
1968
109.5 mm (4.3 in)
1969
84.3 mm (3.3 in)
1970
65.1 mm (2.6 in)
1971
59.6 mm (2.3 in)
1972
94.2 mm (3.7 in)
1973
32.9 mm (1.3 in)
1974
65.5 mm (2.6 in)
1975
84.1 mm (3.3 in)
1976
72.1 mm (2.8 in)
1977
130.9 mm (5.2 in)
1978
243.1 mm (9.6 in)
1979
61.0 mm (2.4 in)
1980
181.4 mm (7.1 in)
1981
132.2 mm (5.2 in)
1982
65.1 mm (2.6 in)
1983
135.7 mm (5.3 in)
1984
98.0 mm (3.9 in)
1985
68.8 mm (2.7 in)
1986
92.7 mm (3.6 in)
1989
71.1 mm (2.8 in)
1990
159.6 mm (6.3 in)
1991
90.2 mm (3.6 in)
1992
68.1 mm (2.7 in)
1993
66.6 mm (2.6 in)
1994
67.0 mm (2.6 in)
1995
99.4 mm (3.9 in)
1996
87.4 mm (3.4 in)
1997
61.0 mm (2.4 in)
1998
117.9 mm (4.6 in)
1999
92.8 mm (3.7 in)
2000
47.1 mm (1.9 in)
2001
164.6 mm (6.5 in)
2002
66.3 mm (2.6 in)
2003
97.9 mm (3.9 in)
2004
139.2 mm (5.5 in)
2005
108.0 mm (4.3 in)
2006
121.2 mm (4.8 in)
2007
102.1 mm (4.0 in)
2008
125.0 mm (4.9 in)
2009
145.8 mm (5.7 in)
2010
87.6 mm (3.4 in)
2011
66.4 mm (2.6 in)
Longest dry spell (CDD)
The longest dry spell of the year at Hornos, 1960 to 2011. The record is 182 days in 2011, marked on the chart; the median year is 108 days.
Longest dry spell (CDD) at Hornos by year
Year
Longest dry spell (CDD)
1960
113 days
1961
143 days
1962
113 days
1963
137 days
1964
98 days
1965
110 days
1966
94 days
1967
176 days
1968
88 days
1969
136 days
1970
99 days
1971
173 days
1972
144 days
1973
96 days
1974
92 days
1975
111 days
1976
124 days
1977
95 days
1978
106 days
1979
171 days
1980
140 days
1981
79 days
1982
163 days
1983
94 days
1984
69 days
1985
64 days
1986
141 days
1989
30 days
1990
88 days
1991
31 days
1992
101 days
1993
47 days
1994
168 days
1995
141 days
1996
96 days
1997
70 days
1998
95 days
1999
172 days
2000
103 days
2001
133 days
2002
153 days
2003
86 days
2004
79 days
2005
103 days
2006
128 days
2007
137 days
2008
156 days
2009
100 days
2010
165 days
2011
182 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
44 years, 1961 to 2010
A day with at least 63.8 mm (2.5 in) of rain is expected about once in 2 years. A day with at least 198.3 mm (7.8 in) of rain is expected about once in 100 years.
Rainfall return levels at Hornos: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
63.8 mm (2.5 in)
5 years
91.1 mm (3.6 in)
10 years
112.2 mm (4.4 in)
25 years
142.9 mm (5.6 in)
50 years
169.1 mm (6.7 in)
Longer than the 44 years of record
100 years
198.3 mm (7.8 in)
Longer than the 44 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, 44 years of values from 1961 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: 239.8 mm (9.4 in) in 1978; 119.9 mm (4.7 in) in 1977; 119.4 mm (4.7 in) in 2001.
Station Changes
1 suspected
One change was suspected in the annual mean temperature of Hornos, at 1992. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1992 ran 0.4 C (0.7 F) lower than in the years before (likely change).
Suspected changes in the annual mean temperature at Hornos, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1992
-0.4
-0.7
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 Hornos standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Hornos 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.