Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Dos Arroyos. 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 Dos Arroyos, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
31.7 C (89.1 F)
-5.6 C (21.9 F)
n/a
n/a
Feb
30.0 C (86.0 F)
-6.1 C (21.0 F)
n/a
n/a
Mar
33.9 C (93.0 F)
-4.4 C (24.1 F)
n/a
n/a
Apr
37.2 C (99.0 F)
0.0 C (32.0 F)
n/a
n/a
May
37.8 C (100.0 F)
1.7 C (35.1 F)
n/a
n/a
Jun
37.8 C (100.0 F)
5.0 C (41.0 F)
n/a
n/a
Jul
37.8 C (100.0 F)
5.6 C (42.1 F)
n/a
n/a
Aug
36.7 C (98.1 F)
5.6 C (42.1 F)
n/a
n/a
Sep
38.3 C (100.9 F)
1.1 C (34.0 F)
n/a
n/a
Oct
38.3 C (100.9 F)
0.0 C (32.0 F)
n/a
n/a
Nov
37.8 C (100.0 F)
-5.0 C (23.0 F)
n/a
n/a
Dec
35.6 C (96.1 F)
-4.4 C (24.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Dos Arroyos still stand. 1995 holds the most, with 192.
Standing records at Dos Arroyos by the year they were set
Year set
Standing records
1972
15
1973
43
1974
37
1975
36
1976
61
1977
68
1978
75
1979
82
1980
65
1981
25
1982
15
1983
42
1984
19
1985
30
1986
21
1987
20
1988
15
1989
13
1990
11
1991
10
1992
38
1993
35
1994
38
1995
192
1996
162
1997
19
1998
41
1999
24
2000
11
2001
14
2002
11
2003
13
2004
5
2005
2
2006
8
2007
22
2008
14
2009
11
2010
15
2011
28
2012
31
2013
27
All-Time Record Progression
2 new records
2 all-time records were set at Dos Arroyos between 1 March 2013 and 2 March 2013. Each dot is a new record.
When Dos Arroyos set new all-time records
Date
Kind
Detail
2013-03-01
Record low maximum temperature
Record low maximum temperature 5.0 C (41.0 F)
2013-03-02
Record low maximum temperature
Record low maximum temperature 1.7 C (35.1 F)
Wettest Day of Each Month
Aug: 95.8 mm (3.8 in)
The wettest day on record for each calendar month at Dos Arroyos. The most was 95.8 mm (3.8 in) on 3 August 1990.
Record daily precipitation for each month at Dos Arroyos
Month
Record daily precipitation (mm)
Date
Jan
49.8 mm (2.0 in)
24 January 1980
Feb
30.0 mm (1.2 in)
3 February 2010
Mar
23.4 mm (0.9 in)
8 March 1988
Apr
39.9 mm (1.6 in)
9 April 1985
May
39.9 mm (1.6 in)
30 May 2000
Jun
83.8 mm (3.3 in)
18 June 2012
Jul
89.9 mm (3.5 in)
2 July 2010
Aug
95.8 mm (3.8 in)
3 August 1990
Sep
65.3 mm (2.6 in)
3 September 1995
Oct
80.3 mm (3.2 in)
9 October 1997
Nov
34.3 mm (1.4 in)
8 November 1983
Dec
30.5 mm (1.2 in)
3 December 1979
Period of Record Coverage
1972 to 2013
Complete yearUnder 90 percent of days
42 years of record at Dos Arroyos, 1972 to 2013. 8 years have data for under 90 percent of days and are left out of rankings: 1972, 1973, 1991, 1992, 1996, 1997, 2002, 2013.
Cooler than the station meanWarmer than the station mean
One stripe for each of 30 complete years at Dos Arroyos, 1974 to 2012. Blue stripes are years cooler than the station's own mean of 15.7 C (60.2 F); red stripes are warmer. The coolest year was 1978, at 13.6 C (56.4 F), and the warmest was 1995, at 19.9 C (67.9 F). The strongest colour marks a difference of 4.3 C (7.7 F).
Annual mean temperature at Dos Arroyos as warming stripes, 1974 to 2012
Year
Annual mean temperature
Difference from the station mean
1974
14.6 C
-1.07 C
1975
14.2 C
-1.51 C
1976
13.6 C
-2.04 C
1977
13.6 C
-2.02 C
1978
13.6 C
-2.08 C
1979
13.7 C
-2.01 C
1980
14.2 C
-1.49 C
1981
14.8 C
-0.89 C
1982
15.8 C
+0.15 C
1983
15.2 C
-0.43 C
1984
15.4 C
-0.23 C
1985
15.6 C
-0.11 C
1986
15.7 C
+0.04 C
1988
16.1 C
+0.42 C
1989
16.2 C
+0.49 C
1990
16.4 C
+0.75 C
1993
16.1 C
+0.44 C
1994
17.1 C
+1.44 C
1995
19.9 C
+4.26 C
1999
16.2 C
+0.57 C
2000
17.1 C
+1.41 C
2001
16.6 C
+0.95 C
2003
16.4 C
+0.74 C
2005
16.5 C
+0.82 C
2006
16.5 C
+0.83 C
2007
16.2 C
+0.58 C
2008
16.0 C
+0.30 C
2010
15.6 C
-0.04 C
2011
16.5 C
+0.80 C
2012
14.5 C
-1.14 C
The annual mean temperature here has risen by 0.6 C (0.3 to 1.0) per decade over 1974 to 2012. In Fahrenheit: 1.1 F (0.5 to 1.7) 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 Dos Arroyos
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.6 C (0.3 to 1.0) per decade
1.1 F (0.5 to 1.7) per decade
1974 to 2012
30
Rise
Mean daily maximum
1.3 C (0.7 to 1.9) per decade
2.3 F (1.2 to 3.3) per decade
1974 to 2012
30
Rise
Mean daily minimum
-0.03 C (-0.21 to 0.16) per decade
-0.05 F (-0.39 to 0.29) per decade
1974 to 2012
30
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
1972 to 2013
Yearly extremes at Dos Arroyos: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
38.3 C (100.9 F)
1995
32.8 C (91.0 F)
42
Coldest night (TNn)
-6.1 C (21.0 F)
1976
-1.1 C (30.0 F)
42
Wettest day (Rx1day)
95.8 mm (3.8 in)
1990
52.7 mm (2.1 in)
42
Wettest five days (Rx5day)
209.3 mm (8.2 in)
1976
107.5 mm (4.2 in)
42
Longest dry spell (CDD)
182 days
2006
82 days
42
Hottest day (TXx)
The hottest day of the year at Dos Arroyos, 1972 to 2013. The record is 38.3 C (100.9 F) in 1995, marked on the chart; the median year is 32.8 C (91.0 F).
Hottest day (TXx) at Dos Arroyos by year
Year
Hottest day (TXx)
1972
30.0 C (86.0 F)
1973
32.8 C (91.0 F)
1974
30.0 C (86.0 F)
1975
30.0 C (86.0 F)
1976
30.0 C (86.0 F)
1977
29.4 C (84.9 F)
1978
30.0 C (86.0 F)
1979
29.4 C (84.9 F)
1980
32.8 C (91.0 F)
1981
30.0 C (86.0 F)
1982
33.9 C (93.0 F)
1983
33.9 C (93.0 F)
1984
31.7 C (89.1 F)
1985
32.8 C (91.0 F)
1986
33.3 C (91.9 F)
1987
30.6 C (87.1 F)
1988
32.8 C (91.0 F)
1989
33.3 C (91.9 F)
1990
32.8 C (91.0 F)
1991
28.9 C (84.0 F)
1992
30.0 C (86.0 F)
1993
33.9 C (93.0 F)
1994
32.8 C (91.0 F)
1995
38.3 C (100.9 F)
1996
38.3 C (100.9 F)
1997
37.2 C (99.0 F)
1998
35.0 C (95.0 F)
1999
35.0 C (95.0 F)
2000
35.0 C (95.0 F)
2001
35.0 C (95.0 F)
2002
33.9 C (93.0 F)
2003
31.7 C (89.1 F)
2004
30.0 C (86.0 F)
2005
37.8 C (100.0 F)
2006
33.9 C (93.0 F)
2007
31.7 C (89.1 F)
2008
33.9 C (93.0 F)
2009
33.9 C (93.0 F)
2010
37.8 C (100.0 F)
2011
37.8 C (100.0 F)
2012
35.6 C (96.1 F)
2013
20.0 C (68.0 F)
Coldest night (TNn)
The coldest night of the year at Dos Arroyos, 1972 to 2013. The record is -6.1 C (21.0 F) in 1976, marked on the chart; the median year is -1.1 C (30.0 F).
Coldest night (TNn) at Dos Arroyos by year
Year
Coldest night (TNn)
1972
1.7 C (35.1 F)
1973
-3.3 C (26.1 F)
1974
-5.0 C (23.0 F)
1975
-5.6 C (21.9 F)
1976
-6.1 C (21.0 F)
1977
-1.7 C (28.9 F)
1978
0.0 C (32.0 F)
1979
-3.3 C (26.1 F)
1980
-3.3 C (26.1 F)
1981
-4.4 C (24.1 F)
1982
-2.2 C (28.0 F)
1983
-4.4 C (24.1 F)
1984
-2.8 C (27.0 F)
1985
-5.0 C (23.0 F)
1986
-3.3 C (26.1 F)
1987
-4.4 C (24.1 F)
1988
-1.7 C (28.9 F)
1989
-4.4 C (24.1 F)
1990
-1.1 C (30.0 F)
1991
-2.8 C (27.0 F)
1992
-2.2 C (28.0 F)
1993
0.0 C (32.0 F)
1994
0.0 C (32.0 F)
1995
-1.1 C (30.0 F)
1996
0.0 C (32.0 F)
1997
-3.3 C (26.1 F)
1998
0.6 C (33.1 F)
1999
0.0 C (32.0 F)
2000
0.0 C (32.0 F)
2001
0.0 C (32.0 F)
2002
0.0 C (32.0 F)
2003
0.0 C (32.0 F)
2004
0.0 C (32.0 F)
2005
0.6 C (33.1 F)
2006
0.0 C (32.0 F)
2007
0.0 C (32.0 F)
2008
0.0 C (32.0 F)
2009
0.0 C (32.0 F)
2010
-1.1 C (30.0 F)
2011
0.0 C (32.0 F)
2012
0.0 C (32.0 F)
2013
-4.4 C (24.1 F)
Wettest day (Rx1day)
The wettest day of the year at Dos Arroyos, 1972 to 2013. The record is 95.8 mm (3.8 in) in 1990, marked on the chart; the median year is 52.7 mm (2.1 in).
Wettest day (Rx1day) at Dos Arroyos by year
Year
Wettest day (Rx1day)
1972
56.9 mm (2.2 in)
1973
85.3 mm (3.4 in)
1974
56.9 mm (2.2 in)
1975
59.9 mm (2.4 in)
1976
70.9 mm (2.8 in)
1977
52.1 mm (2.1 in)
1978
56.9 mm (2.2 in)
1979
60.5 mm (2.4 in)
1980
76.2 mm (3.0 in)
1981
39.9 mm (1.6 in)
1982
41.4 mm (1.6 in)
1983
66.8 mm (2.6 in)
1984
48.3 mm (1.9 in)
1985
63.8 mm (2.5 in)
1986
48.8 mm (1.9 in)
1987
46.0 mm (1.8 in)
1988
60.2 mm (2.4 in)
1989
49.3 mm (1.9 in)
1990
95.8 mm (3.8 in)
1991
60.2 mm (2.4 in)
1992
34.8 mm (1.4 in)
1993
42.9 mm (1.7 in)
1994
31.8 mm (1.3 in)
1995
65.3 mm (2.6 in)
1996
53.3 mm (2.1 in)
1997
80.3 mm (3.2 in)
1998
39.9 mm (1.6 in)
1999
30.0 mm (1.2 in)
2000
39.9 mm (1.6 in)
2001
41.9 mm (1.6 in)
2002
45.0 mm (1.8 in)
2003
45.0 mm (1.8 in)
2004
63.8 mm (2.5 in)
2005
22.9 mm (0.9 in)
2006
30.0 mm (1.2 in)
2007
49.8 mm (2.0 in)
2008
59.9 mm (2.4 in)
2009
39.9 mm (1.6 in)
2010
89.9 mm (3.5 in)
2011
59.9 mm (2.4 in)
2012
83.8 mm (3.3 in)
2013
9.9 mm (0.39 in)
Wettest five days (Rx5day)
The wettest five days of the year at Dos Arroyos, 1972 to 2013. The record is 209.3 mm (8.2 in) in 1976, marked on the chart; the median year is 107.5 mm (4.2 in).
Wettest five days (Rx5day) at Dos Arroyos by year
Year
Wettest five days (Rx5day)
1972
142.0 mm (5.6 in)
1973
148.6 mm (5.9 in)
1974
82.5 mm (3.2 in)
1975
133.3 mm (5.2 in)
1976
209.3 mm (8.2 in)
1977
107.2 mm (4.2 in)
1978
124.7 mm (4.9 in)
1979
95.6 mm (3.8 in)
1980
154.1 mm (6.1 in)
1981
80.5 mm (3.2 in)
1982
99.6 mm (3.9 in)
1983
143.3 mm (5.6 in)
1984
112.0 mm (4.4 in)
1985
101.4 mm (4.0 in)
1986
107.0 mm (4.2 in)
1987
75.0 mm (3.0 in)
1988
137.7 mm (5.4 in)
1989
107.7 mm (4.2 in)
1990
145.8 mm (5.7 in)
1991
115.3 mm (4.5 in)
1992
78.9 mm (3.1 in)
1993
125.2 mm (4.9 in)
1994
53.3 mm (2.1 in)
1995
106.5 mm (4.2 in)
1996
128.0 mm (5.0 in)
1997
101.9 mm (4.0 in)
1998
125.7 mm (4.9 in)
1999
90.9 mm (3.6 in)
2000
60.0 mm (2.4 in)
2001
142.3 mm (5.6 in)
2002
81.4 mm (3.2 in)
2003
119.4 mm (4.7 in)
2004
103.4 mm (4.1 in)
2005
83.0 mm (3.3 in)
2006
99.6 mm (3.9 in)
2007
77.5 mm (3.1 in)
2008
159.2 mm (6.3 in)
2009
99.3 mm (3.9 in)
2010
119.6 mm (4.7 in)
2011
114.5 mm (4.5 in)
2012
179.0 mm (7.0 in)
2013
10.7 mm (0.4 in)
Longest dry spell (CDD)
The longest dry spell of the year at Dos Arroyos, 1972 to 2013. The record is 182 days in 2006, marked on the chart; the median year is 82 days.
Longest dry spell (CDD) at Dos Arroyos by year
Year
Longest dry spell (CDD)
1972
30 days
1973
55 days
1974
41 days
1975
110 days
1976
59 days
1977
52 days
1978
42 days
1979
64 days
1980
35 days
1981
34 days
1982
50 days
1983
73 days
1984
72 days
1985
49 days
1986
104 days
1987
92 days
1988
65 days
1989
100 days
1990
60 days
1991
53 days
1992
42 days
1993
50 days
1994
84 days
1995
84 days
1996
126 days
1997
77 days
1998
151 days
1999
108 days
2000
150 days
2001
155 days
2002
86 days
2003
115 days
2004
43 days
2005
85 days
2006
182 days
2007
82 days
2008
158 days
2009
88 days
2010
99 days
2011
171 days
2012
126 days
2013
82 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
22 years with a frost
Across 22 years with a frost, the median last spring frost at Dos Arroyos falls on 21 February and the median first autumn frost on 26 November, which leaves a median of 273 days between them.
Frost dates and growing season at Dos Arroyos
Measure
Median, all years
Earliest period
Recent period (1974 to 2012)
Recent against earliest
Fitted trend
Last spring frost
21 February
n/a
21 February
n/a
n/a
First autumn frost
26 November
n/a
26 November
n/a
n/a
Growing days
273 days
n/a
273 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
36 years, 1973 to 2012
A day with at least 53.0 mm (2.1 in) of rain is expected about once in 2 years. A day with at least 106.9 mm (4.2 in) of rain is expected about once in 100 years.
Rainfall return levels at Dos Arroyos: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
53.0 mm (2.1 in)
5 years
69.4 mm (2.7 in)
10 years
79.4 mm (3.1 in)
25 years
91.2 mm (3.6 in)
50 years
99.3 mm (3.9 in)
Longer than the 36 years of record
100 years
106.9 mm (4.2 in)
Longer than the 36 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, 36 years of values from 1973 to 2012.
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: 95.8 mm (3.8 in) in 1990; 89.9 mm (3.5 in) in 2010; 85.3 mm (3.4 in) in 1973.
Download the Data
Data for Dos Arroyos standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Dos Arroyos 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.