Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Presa Potrerillos. 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 Presa Potrerillos, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
35.6 C (96.1 F)
-9.4 C (15.1 F)
n/a
n/a
Feb
37.8 C (100.0 F)
-7.2 C (19.0 F)
n/a
n/a
Mar
35.6 C (96.1 F)
-5.0 C (23.0 F)
n/a
n/a
Apr
37.8 C (100.0 F)
0.6 C (33.1 F)
n/a
n/a
May
38.9 C (102.0 F)
3.9 C (39.0 F)
n/a
n/a
Jun
38.9 C (102.0 F)
7.8 C (46.0 F)
n/a
n/a
Jul
35.6 C (96.1 F)
6.7 C (44.1 F)
n/a
n/a
Aug
35.6 C (96.1 F)
7.8 C (46.0 F)
n/a
n/a
Sep
38.3 C (100.9 F)
0.0 C (32.0 F)
n/a
n/a
Oct
37.8 C (100.0 F)
-1.1 C (30.0 F)
n/a
n/a
Nov
38.9 C (102.0 F)
-7.2 C (19.0 F)
n/a
n/a
Dec
36.7 C (98.1 F)
-6.7 C (19.9 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Presa Potrerillos still stand. 1950 holds the most, with 125.
Standing records at Presa Potrerillos by the year they were set
Year set
Standing records
1947
13
1948
66
1949
117
1950
125
1951
109
1952
47
1953
27
1954
20
1955
33
1956
36
1957
26
1958
24
1959
12
1960
18
1961
15
1962
13
1963
11
1964
13
1965
12
1966
16
1967
17
1968
16
1969
21
1970
23
1971
11
1972
18
1973
25
1974
6
1975
10
1976
23
1977
13
1978
17
1979
19
1980
21
1981
16
1982
15
1983
19
1984
23
1985
16
1986
14
1987
19
1988
13
1989
13
1990
12
1991
25
1992
13
1993
7
1994
11
1995
11
1996
12
1997
24
1998
29
1999
11
2000
15
2001
17
2002
19
2003
16
2004
16
2005
7
2006
9
2007
6
2008
8
2009
4
2010
20
2011
15
2012
8
2013
8
All-Time Record Progression
4 new records
4 all-time records were set at Presa Potrerillos between 18 January 1981 and 15 January 2010. Each dot is a new record.
When Presa Potrerillos set new all-time records
Date
Kind
Detail
1981-01-18
Record low maximum temperature
Record low maximum temperature 6.1 C (43.0 F)
1988-06-03
Record high minimum temperature
Record high minimum temperature 18.9 C (66.0 F)
1998-05-12
Record high minimum temperature
Record high minimum temperature 19.4 C (66.9 F)
2010-01-15
Record low maximum temperature
Record low maximum temperature 4.4 C (39.9 F)
Wettest Day of Each Month
Sep: 146.1 mm (5.8 in)
The wettest day on record for each calendar month at Presa Potrerillos. The most was 146.1 mm (5.8 in) on 26 September 1970.
Record daily precipitation for each month at Presa Potrerillos
Month
Record daily precipitation (mm)
Date
Jan
53.8 mm (2.1 in)
5 January 1948
Feb
50.0 mm (2.0 in)
2 February 2010
Mar
42.4 mm (1.7 in)
4 March 1968
Apr
46.2 mm (1.8 in)
16 April 1959
May
57.2 mm (2.3 in)
29 May 2000
Jun
70.9 mm (2.8 in)
23 June 1956
Jul
106.2 mm (4.2 in)
29 July 1988
Aug
67.1 mm (2.6 in)
30 August 2001
Sep
146.1 mm (5.8 in)
26 September 1970
Oct
53.3 mm (2.1 in)
8 October 1982
Nov
38.9 mm (1.5 in)
2 November 1958
Dec
52.8 mm (2.1 in)
2 December 1979
Period of Record Coverage
1947 to 2013
Complete yearUnder 90 percent of days
67 years of record at Presa Potrerillos, 1947 to 2013. 3 years have data for under 90 percent of days and are left out of rankings: 1947, 1996, 2013.
Cooler than the station meanWarmer than the station mean
One stripe for each of 59 complete years at Presa Potrerillos, 1949 to 2012. Blue stripes are years cooler than the station's own mean of 16.7 C (62.0 F); red stripes are warmer. The coolest year was 1978, at 15.3 C (59.6 F), and the warmest was 1949, at 20.4 C (68.8 F). The strongest colour marks a difference of 3.8 C (6.8 F).
Annual mean temperature at Presa Potrerillos as warming stripes, 1949 to 2012
Year
Annual mean temperature
Difference from the station mean
1949
20.4 C
+3.76 C
1951
20.0 C
+3.34 C
1952
15.5 C
-1.14 C
1953
15.9 C
-0.78 C
1954
16.0 C
-0.69 C
1955
15.5 C
-1.22 C
1956
16.1 C
-0.62 C
1957
16.2 C
-0.49 C
1958
15.4 C
-1.30 C
1959
15.7 C
-1.01 C
1960
16.2 C
-0.45 C
1961
15.9 C
-0.77 C
1963
16.8 C
+0.09 C
1964
17.1 C
+0.44 C
1965
16.5 C
-0.19 C
1966
16.2 C
-0.44 C
1967
16.6 C
-0.04 C
1968
16.4 C
-0.29 C
1969
17.3 C
+0.64 C
1970
16.7 C
+0.03 C
1971
16.7 C
+0.06 C
1972
17.3 C
+0.58 C
1973
16.9 C
+0.21 C
1974
17.3 C
+0.64 C
1975
17.0 C
+0.33 C
1976
15.9 C
-0.82 C
1978
15.3 C
-1.37 C
1979
15.5 C
-1.23 C
1980
15.8 C
-0.93 C
1981
15.9 C
-0.80 C
1982
17.1 C
+0.41 C
1983
16.1 C
-0.55 C
1984
16.1 C
-0.55 C
1985
16.2 C
-0.52 C
1986
16.2 C
-0.44 C
1987
16.0 C
-0.64 C
1988
16.6 C
-0.11 C
1989
16.8 C
+0.09 C
1990
16.6 C
-0.08 C
1991
16.7 C
-0.02 C
1992
16.1 C
-0.54 C
1993
17.0 C
+0.33 C
1994
17.5 C
+0.78 C
1995
17.4 C
+0.72 C
1997
16.4 C
-0.24 C
1998
17.5 C
+0.79 C
1999
16.9 C
+0.21 C
2000
17.0 C
+0.31 C
2002
16.9 C
+0.17 C
2003
17.2 C
+0.51 C
2004
16.1 C
-0.56 C
2005
17.2 C
+0.52 C
2006
17.2 C
+0.51 C
2007
17.1 C
+0.37 C
2008
16.9 C
+0.21 C
2009
17.5 C
+0.84 C
2010
16.6 C
-0.13 C
2011
18.1 C
+1.41 C
2012
17.3 C
+0.64 C
The fitted trend in annual mean temperature here over 1949 to 2012 is 0.1 C (-0.1 to 0.2) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.1 F (-0.1 to 0.4) per decade. The slope is a straight line fitted to 59 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Presa Potrerillos
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.1 C (-0.1 to 0.2) per decade
0.1 F (-0.1 to 0.4) per decade
1949 to 2012
59
Not clearly different from zero
Mean daily maximum
-0.18 C (-0.40 to 0.05) per decade
-0.3 F (-0.7 to 0.1) per decade
1949 to 2012
59
Not clearly different from zero
Mean daily minimum
0.3 C (0.2 to 0.4) per decade
0.6 F (0.4 to 0.7) per decade
1949 to 2012
59
Rise
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
1942 to 2013
Yearly extremes at Presa Potrerillos: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
38.9 C (102.0 F)
1948
32.8 C (91.0 F)
67
Coldest night (TNn)
-9.4 C (15.1 F)
1955
-2.8 C (27.0 F)
67
Wettest day (Rx1day)
146.1 mm (5.8 in)
1970
43.3 mm (1.7 in)
72
Wettest five days (Rx5day)
171.6 mm (6.8 in)
1991
89.9 mm (3.5 in)
72
Longest dry spell (CDD)
174 days
1945
73 days
72
Hottest day (TXx)
The hottest day of the year at Presa Potrerillos, 1942 to 2013. The record is 38.9 C (102.0 F) in 1948, marked on the chart; the median year is 32.8 C (91.0 F).
Hottest day (TXx) at Presa Potrerillos by year
Year
Hottest day (TXx)
1942
n/a
1943
n/a
1944
n/a
1945
n/a
1946
n/a
1947
36.1 C (97.0 F)
1948
38.9 C (102.0 F)
1949
37.8 C (100.0 F)
1950
38.9 C (102.0 F)
1951
38.9 C (102.0 F)
1952
27.8 C (82.0 F)
1953
28.9 C (84.0 F)
1954
28.9 C (84.0 F)
1955
30.6 C (87.1 F)
1956
33.9 C (93.0 F)
1957
32.8 C (91.0 F)
1958
31.7 C (89.1 F)
1959
30.0 C (86.0 F)
1960
31.1 C (88.0 F)
1961
31.7 C (89.1 F)
1962
32.8 C (91.0 F)
1963
33.3 C (91.9 F)
1964
33.3 C (91.9 F)
1965
32.8 C (91.0 F)
1966
32.8 C (91.0 F)
1967
33.3 C (91.9 F)
1968
32.2 C (90.0 F)
1969
34.4 C (93.9 F)
1970
32.2 C (90.0 F)
1971
31.7 C (89.1 F)
1972
32.8 C (91.0 F)
1973
33.9 C (93.0 F)
1974
32.8 C (91.0 F)
1975
35.6 C (96.1 F)
1976
31.1 C (88.0 F)
1977
30.0 C (86.0 F)
1978
31.7 C (89.1 F)
1979
30.0 C (86.0 F)
1980
32.2 C (90.0 F)
1981
31.1 C (88.0 F)
1982
33.3 C (91.9 F)
1983
34.4 C (93.9 F)
1984
31.1 C (88.0 F)
1985
31.1 C (88.0 F)
1986
31.7 C (89.1 F)
1987
30.0 C (86.0 F)
1988
31.7 C (89.1 F)
1989
33.3 C (91.9 F)
1990
32.8 C (91.0 F)
1991
33.3 C (91.9 F)
1992
30.6 C (87.1 F)
1993
32.2 C (90.0 F)
1994
32.2 C (90.0 F)
1995
33.3 C (91.9 F)
1996
32.8 C (91.0 F)
1997
31.7 C (89.1 F)
1998
33.9 C (93.0 F)
1999
32.2 C (90.0 F)
2000
31.7 C (89.1 F)
2001
31.1 C (88.0 F)
2002
32.2 C (90.0 F)
2003
35.0 C (95.0 F)
2004
32.8 C (91.0 F)
2005
35.0 C (95.0 F)
2006
32.2 C (90.0 F)
2007
31.7 C (89.1 F)
2008
33.9 C (93.0 F)
2009
34.4 C (93.9 F)
2010
33.9 C (93.0 F)
2011
35.6 C (96.1 F)
2012
32.8 C (91.0 F)
2013
32.8 C (91.0 F)
Coldest night (TNn)
The coldest night of the year at Presa Potrerillos, 1942 to 2013. The record is -9.4 C (15.1 F) in 1955, marked on the chart; the median year is -2.8 C (27.0 F).
Coldest night (TNn) at Presa Potrerillos by year
Year
Coldest night (TNn)
1942
n/a
1943
n/a
1944
n/a
1945
n/a
1946
n/a
1947
-1.1 C (30.0 F)
1948
0.6 C (33.1 F)
1949
-2.8 C (27.0 F)
1950
0.6 C (33.1 F)
1951
-5.6 C (21.9 F)
1952
-7.2 C (19.0 F)
1953
-6.1 C (21.0 F)
1954
-5.0 C (23.0 F)
1955
-9.4 C (15.1 F)
1956
-5.0 C (23.0 F)
1957
-4.4 C (24.1 F)
1958
-4.4 C (24.1 F)
1959
-3.9 C (25.0 F)
1960
-7.2 C (19.0 F)
1961
-5.0 C (23.0 F)
1962
-7.2 C (19.0 F)
1963
-5.0 C (23.0 F)
1964
-5.6 C (21.9 F)
1965
-3.3 C (26.1 F)
1966
-4.4 C (24.1 F)
1967
-5.0 C (23.0 F)
1968
-5.0 C (23.0 F)
1969
-2.8 C (27.0 F)
1970
-2.8 C (27.0 F)
1971
-1.1 C (30.0 F)
1972
0.0 C (32.0 F)
1973
-3.3 C (26.1 F)
1974
-2.8 C (27.0 F)
1975
-5.0 C (23.0 F)
1976
-3.9 C (25.0 F)
1977
-2.2 C (28.0 F)
1978
-2.2 C (28.0 F)
1979
-3.9 C (25.0 F)
1980
-1.1 C (30.0 F)
1981
-3.3 C (26.1 F)
1982
-1.1 C (30.0 F)
1983
-1.7 C (28.9 F)
1984
-0.6 C (30.9 F)
1985
-3.3 C (26.1 F)
1986
-3.9 C (25.0 F)
1987
-1.7 C (28.9 F)
1988
-2.2 C (28.0 F)
1989
-1.7 C (28.9 F)
1990
-1.7 C (28.9 F)
1991
-1.7 C (28.9 F)
1992
-1.7 C (28.9 F)
1993
0.0 C (32.0 F)
1994
0.0 C (32.0 F)
1995
0.6 C (33.1 F)
1996
-1.7 C (28.9 F)
1997
-6.7 C (19.9 F)
1998
-2.8 C (27.0 F)
1999
-1.1 C (30.0 F)
2000
0.0 C (32.0 F)
2001
0.0 C (32.0 F)
2002
0.0 C (32.0 F)
2003
-1.7 C (28.9 F)
2004
-2.2 C (28.0 F)
2005
-0.6 C (30.9 F)
2006
-4.4 C (24.1 F)
2007
0.6 C (33.1 F)
2008
-2.8 C (27.0 F)
2009
0.0 C (32.0 F)
2010
-1.1 C (30.0 F)
2011
-2.8 C (27.0 F)
2012
0.6 C (33.1 F)
2013
0.0 C (32.0 F)
Wettest day (Rx1day)
The wettest day of the year at Presa Potrerillos, 1942 to 2013. The record is 146.1 mm (5.8 in) in 1970, marked on the chart; the median year is 43.3 mm (1.7 in).
Wettest day (Rx1day) at Presa Potrerillos by year
Year
Wettest day (Rx1day)
1942
41.9 mm (1.6 in)
1943
39.9 mm (1.6 in)
1944
37.8 mm (1.5 in)
1945
32.8 mm (1.3 in)
1946
36.8 mm (1.4 in)
1947
33.3 mm (1.3 in)
1948
53.8 mm (2.1 in)
1949
49.8 mm (2.0 in)
1950
21.3 mm (0.8 in)
1951
48.8 mm (1.9 in)
1952
40.4 mm (1.6 in)
1953
34.3 mm (1.4 in)
1954
21.8 mm (0.9 in)
1955
36.8 mm (1.4 in)
1956
70.9 mm (2.8 in)
1957
39.9 mm (1.6 in)
1958
48.3 mm (1.9 in)
1959
47.5 mm (1.9 in)
1960
35.3 mm (1.4 in)
1961
26.7 mm (1.1 in)
1962
53.1 mm (2.1 in)
1963
47.0 mm (1.9 in)
1964
23.1 mm (0.9 in)
1965
34.5 mm (1.4 in)
1966
38.6 mm (1.5 in)
1967
41.4 mm (1.6 in)
1968
44.5 mm (1.8 in)
1969
17.3 mm (0.7 in)
1970
146.1 mm (5.8 in)
1971
52.3 mm (2.1 in)
1972
54.1 mm (2.1 in)
1973
40.4 mm (1.6 in)
1974
43.4 mm (1.7 in)
1975
44.5 mm (1.8 in)
1976
36.8 mm (1.4 in)
1977
66.8 mm (2.6 in)
1978
55.4 mm (2.2 in)
1979
52.8 mm (2.1 in)
1980
22.9 mm (0.9 in)
1981
34.5 mm (1.4 in)
1982
53.3 mm (2.1 in)
1983
52.6 mm (2.1 in)
1984
31.5 mm (1.2 in)
1985
34.0 mm (1.3 in)
1986
62.2 mm (2.4 in)
1987
36.1 mm (1.4 in)
1988
106.2 mm (4.2 in)
1989
47.2 mm (1.9 in)
1990
54.9 mm (2.2 in)
1991
69.9 mm (2.8 in)
1992
42.9 mm (1.7 in)
1993
49.0 mm (1.9 in)
1994
71.4 mm (2.8 in)
1995
26.7 mm (1.1 in)
1996
32.3 mm (1.3 in)
1997
50.5 mm (2.0 in)
1998
53.8 mm (2.1 in)
1999
43.2 mm (1.7 in)
2000
57.2 mm (2.3 in)
2001
67.1 mm (2.6 in)
2002
74.4 mm (2.9 in)
2003
43.2 mm (1.7 in)
2004
44.2 mm (1.7 in)
2005
44.5 mm (1.8 in)
2006
32.3 mm (1.3 in)
2007
36.6 mm (1.4 in)
2008
62.2 mm (2.4 in)
2009
43.9 mm (1.7 in)
2010
50.0 mm (2.0 in)
2011
31.0 mm (1.2 in)
2012
34.3 mm (1.4 in)
2013
39.9 mm (1.6 in)
Wettest five days (Rx5day)
The wettest five days of the year at Presa Potrerillos, 1942 to 2013. The record is 171.6 mm (6.8 in) in 1991, marked on the chart; the median year is 89.9 mm (3.5 in).
Wettest five days (Rx5day) at Presa Potrerillos by year
Year
Wettest five days (Rx5day)
1942
82.9 mm (3.3 in)
1943
67.6 mm (2.7 in)
1944
54.1 mm (2.1 in)
1945
44.6 mm (1.8 in)
1946
51.3 mm (2.0 in)
1947
80.8 mm (3.2 in)
1948
81.7 mm (3.2 in)
1949
66.5 mm (2.6 in)
1950
53.3 mm (2.1 in)
1951
100.9 mm (4.0 in)
1952
121.0 mm (4.8 in)
1953
114.7 mm (4.5 in)
1954
40.1 mm (1.6 in)
1955
64.8 mm (2.6 in)
1956
118.5 mm (4.7 in)
1957
100.4 mm (4.0 in)
1958
117.9 mm (4.6 in)
1959
110.2 mm (4.3 in)
1960
70.4 mm (2.8 in)
1961
65.5 mm (2.6 in)
1962
114.6 mm (4.5 in)
1963
77.3 mm (3.0 in)
1964
59.9 mm (2.4 in)
1965
106.4 mm (4.2 in)
1966
89.2 mm (3.5 in)
1967
121.6 mm (4.8 in)
1968
105.3 mm (4.1 in)
1969
24.5 mm (1.0 in)
1970
162.2 mm (6.4 in)
1971
118.7 mm (4.7 in)
1972
98.1 mm (3.9 in)
1973
99.1 mm (3.9 in)
1974
92.1 mm (3.6 in)
1975
93.8 mm (3.7 in)
1976
135.4 mm (5.3 in)
1977
124.7 mm (4.9 in)
1978
112.1 mm (4.4 in)
1979
76.2 mm (3.0 in)
1980
49.1 mm (1.9 in)
1981
66.5 mm (2.6 in)
1982
74.6 mm (2.9 in)
1983
102.4 mm (4.0 in)
1984
68.4 mm (2.7 in)
1985
47.6 mm (1.9 in)
1986
144.2 mm (5.7 in)
1987
95.9 mm (3.8 in)
1988
141.2 mm (5.6 in)
1989
47.2 mm (1.9 in)
1990
106.6 mm (4.2 in)
1991
171.6 mm (6.8 in)
1992
90.4 mm (3.6 in)
1993
96.0 mm (3.8 in)
1994
89.3 mm (3.5 in)
1995
60.2 mm (2.4 in)
1996
81.3 mm (3.2 in)
1997
74.4 mm (2.9 in)
1998
106.6 mm (4.2 in)
1999
60.5 mm (2.4 in)
2000
97.5 mm (3.8 in)
2001
122.7 mm (4.8 in)
2002
119.7 mm (4.7 in)
2003
90.2 mm (3.6 in)
2004
89.6 mm (3.5 in)
2005
68.4 mm (2.7 in)
2006
72.7 mm (2.9 in)
2007
89.2 mm (3.5 in)
2008
121.2 mm (4.8 in)
2009
75.9 mm (3.0 in)
2010
94.0 mm (3.7 in)
2011
51.6 mm (2.0 in)
2012
48.2 mm (1.9 in)
2013
93.3 mm (3.7 in)
Longest dry spell (CDD)
The longest dry spell of the year at Presa Potrerillos, 1942 to 2013. The record is 174 days in 1945, marked on the chart; the median year is 73 days.
Longest dry spell (CDD) at Presa Potrerillos by year
Year
Longest dry spell (CDD)
1942
61 days
1943
111 days
1944
70 days
1945
174 days
1946
57 days
1947
83 days
1948
103 days
1949
75 days
1950
130 days
1951
75 days
1952
95 days
1953
66 days
1954
80 days
1955
131 days
1956
71 days
1957
100 days
1958
70 days
1959
59 days
1960
148 days
1961
58 days
1962
69 days
1963
58 days
1964
73 days
1965
46 days
1966
41 days
1967
45 days
1968
40 days
1969
99 days
1970
97 days
1971
143 days
1972
48 days
1973
85 days
1974
72 days
1975
121 days
1976
92 days
1977
39 days
1978
54 days
1979
80 days
1980
52 days
1981
31 days
1982
56 days
1983
73 days
1984
90 days
1985
67 days
1986
55 days
1987
78 days
1988
65 days
1989
146 days
1990
68 days
1991
91 days
1992
33 days
1993
103 days
1994
87 days
1995
102 days
1996
33 days
1997
36 days
1998
152 days
1999
83 days
2000
140 days
2001
57 days
2002
50 days
2003
66 days
2004
46 days
2005
70 days
2006
53 days
2007
56 days
2008
80 days
2009
75 days
2010
80 days
2011
121 days
2012
78 days
2013
124 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
38 years with a frost
Across 38 years with a frost, the median last spring frost at Presa Potrerillos falls on 9 February and the median first autumn frost on 30 November, which leaves a median of 303 days between them.
Fitted over all years, the growing season changes by +8.5 days per decade at this station.
Frost dates and growing season at Presa Potrerillos
Measure
Median, all years
Earliest period
Recent period (1959 to 2011)
Recent against earliest
Fitted trend
Last spring frost
9 February
n/a
5 February
n/a
-3.9 days per decade
First autumn frost
30 November
n/a
4 December
n/a
+4.6 days per decade
Growing days
303 days
n/a
305 days
n/a
+8.5 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
69 years, 1943 to 2012
A day with at least 42.9 mm (1.7 in) of rain is expected about once in 2 years. A day with at least 107.4 mm (4.2 in) of rain is expected about once in 100 years.
Rainfall return levels at Presa Potrerillos: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
42.9 mm (1.7 in)
5 years
57.9 mm (2.3 in)
10 years
68.7 mm (2.7 in)
25 years
83.4 mm (3.3 in)
50 years
95.1 mm (3.7 in)
100 years
107.4 mm (4.2 in)
Longer than the 69 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, 69 years of values from 1943 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: 146.1 mm (5.8 in) in 1970; 106.2 mm (4.2 in) in 1988; 74.4 mm (2.9 in) in 2002.
Station Changes
1 suspected
One change was suspected in the annual mean temperature of Presa Potrerillos, at 1976. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1976 ran 0.6 C (1.1 F) lower than in the years before (likely change).
Suspected changes in the annual mean temperature at Presa Potrerillos, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1976
-0.6
-1.1
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 Presa Potrerillos standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Presa Potrerillos 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.