Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Mesillas. 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 Mesillas, 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)
-6.1 C (21.0 F)
n/a
n/a
Feb
31.7 C (89.1 F)
-6.1 C (21.0 F)
n/a
n/a
Mar
33.9 C (93.0 F)
-1.1 C (30.0 F)
n/a
n/a
Apr
36.7 C (98.1 F)
0.0 C (32.0 F)
n/a
n/a
May
36.7 C (98.1 F)
3.9 C (39.0 F)
n/a
n/a
Jun
36.7 C (98.1 F)
6.7 C (44.1 F)
n/a
n/a
Jul
33.9 C (93.0 F)
7.8 C (46.0 F)
n/a
n/a
Aug
31.7 C (89.1 F)
6.1 C (43.0 F)
n/a
n/a
Sep
32.8 C (91.0 F)
5.0 C (41.0 F)
n/a
n/a
Oct
35.6 C (96.1 F)
0.0 C (32.0 F)
n/a
n/a
Nov
31.7 C (89.1 F)
-5.0 C (23.0 F)
n/a
n/a
Dec
30.0 C (86.0 F)
-6.1 C (21.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Mesillas still stand. 1967 holds the most, with 49.
Standing records at Mesillas by the year they were set
Year set
Standing records
1963
35
1964
40
1965
31
1966
40
1967
49
1968
30
1969
44
1970
32
1971
35
1972
41
1973
43
1974
29
1975
42
1976
20
1977
33
1978
27
1979
31
1980
26
1981
35
1982
22
1983
29
1984
28
1985
38
1986
31
1987
38
1988
31
1989
32
1990
31
1991
25
1992
22
1993
18
1994
20
1995
42
1996
29
1997
25
1998
17
1999
8
2000
12
2001
38
2002
28
2003
39
2004
35
2005
18
2006
5
2007
10
2008
31
2009
15
2010
36
2011
26
2012
13
2013
9
All-Time Record Progression
2 new records
2 all-time records were set at Mesillas between 20 September 2004 and 25 July 2006. Each dot is a new record.
When Mesillas set new all-time records
Date
Kind
Detail
2004-09-20
Record daily precipitation
Record daily precipitation 69.9 mm (2.8 in)
2006-07-25
Record daily precipitation
Record daily precipitation 89.9 mm (3.5 in)
Wettest Day of Each Month
Jul: 89.9 mm (3.5 in)
The wettest day on record for each calendar month at Mesillas. The most was 89.9 mm (3.5 in) on 25 July 2006.
Record daily precipitation for each month at Mesillas
Month
Record daily precipitation (mm)
Date
Jan
40.9 mm (1.6 in)
1 January 2013
Feb
45.5 mm (1.8 in)
2 February 2010
Mar
16.3 mm (0.6 in)
2 March 2001
Apr
40.9 mm (1.6 in)
16 April 1981
May
40.9 mm (1.6 in)
27 May 1983
Jun
64.8 mm (2.6 in)
20 June 2007
Jul
89.9 mm (3.5 in)
25 July 2006
Aug
57.9 mm (2.3 in)
8 August 1975
Sep
69.9 mm (2.8 in)
20 September 2004
Oct
40.9 mm (1.6 in)
20 October 1985
Nov
29.0 mm (1.1 in)
3 November 2002
Dec
45.0 mm (1.8 in)
13 December 1963
Period of Record Coverage
1963 to 2013
Complete yearUnder 90 percent of days
51 years of record at Mesillas, 1963 to 2013. 3 years have data for under 90 percent of days and are left out of rankings: 1963, 1997, 2013.
Cooler than the station meanWarmer than the station mean
One stripe for each of 47 complete years at Mesillas, 1964 to 2012. Blue stripes are years cooler than the station's own mean of 17.5 C (63.5 F); red stripes are warmer. The coolest year was 1966, at 16.5 C (61.6 F), and the warmest was 2000, at 18.4 C (65.2 F). The strongest colour marks a difference of 1.1 C (2.0 F).
Annual mean temperature at Mesillas as warming stripes, 1964 to 2012
Year
Annual mean temperature
Difference from the station mean
1964
17.5 C
-0.01 C
1965
17.2 C
-0.32 C
1966
16.5 C
-1.04 C
1967
16.9 C
-0.65 C
1968
17.0 C
-0.55 C
1969
17.9 C
+0.37 C
1970
17.3 C
-0.19 C
1971
17.0 C
-0.50 C
1972
17.7 C
+0.19 C
1973
17.1 C
-0.44 C
1974
17.3 C
-0.20 C
1975
17.0 C
-0.47 C
1976
16.9 C
-0.63 C
1977
17.2 C
-0.28 C
1978
17.1 C
-0.38 C
1979
17.0 C
-0.55 C
1980
17.2 C
-0.34 C
1981
17.0 C
-0.53 C
1982
17.6 C
+0.13 C
1983
16.6 C
-0.86 C
1984
16.6 C
-0.88 C
1985
17.5 C
+0.04 C
1986
17.6 C
+0.10 C
1987
17.3 C
-0.18 C
1988
17.8 C
+0.29 C
1989
18.2 C
+0.71 C
1990
17.8 C
+0.32 C
1991
17.7 C
+0.21 C
1992
17.0 C
-0.54 C
1993
17.8 C
+0.29 C
1994
18.2 C
+0.73 C
1995
18.3 C
+0.78 C
1996
18.2 C
+0.68 C
1998
18.1 C
+0.62 C
1999
17.7 C
+0.21 C
2000
18.4 C
+0.93 C
2002
18.1 C
+0.64 C
2003
18.3 C
+0.75 C
2004
17.5 C
+0.00 C
2005
17.5 C
-0.04 C
2006
17.5 C
-0.05 C
2007
17.3 C
-0.25 C
2008
17.3 C
-0.21 C
2009
18.3 C
+0.79 C
2010
17.5 C
+0.04 C
2011
18.3 C
+0.82 C
2012
17.9 C
+0.41 C
The annual mean temperature here has risen by 0.2 C (0.1 to 0.3) per decade over 1964 to 2012. In Fahrenheit: 0.4 F (0.2 to 0.5) per decade. The slope is a straight line fitted to 47 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Mesillas
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.2 C (0.1 to 0.3) per decade
0.4 F (0.2 to 0.5) per decade
1964 to 2012
47
Rise
Mean daily maximum
0.4 C (0.3 to 0.5) per decade
0.7 F (0.5 to 1.0) per decade
1964 to 2012
47
Rise
Mean daily minimum
0.01 C (-0.10 to 0.12) per decade
0.02 F (-0.19 to 0.22) per decade
1964 to 2012
47
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
1963 to 2013
Yearly extremes at Mesillas: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
36.7 C (98.1 F)
1979
34.4 C (93.9 F)
51
Coldest night (TNn)
-6.1 C (21.0 F)
1973
-2.2 C (28.0 F)
51
Wettest day (Rx1day)
89.9 mm (3.5 in)
2006
40.9 mm (1.6 in)
51
Wettest five days (Rx5day)
157.5 mm (6.2 in)
2008
76.4 mm (3.0 in)
51
Longest dry spell (CDD)
164 days
1999
91 days
51
Hottest day (TXx)
The hottest day of the year at Mesillas, 1963 to 2013. The record is 36.7 C (98.1 F) in 1979, marked on the chart; the median year is 34.4 C (93.9 F).
Hottest day (TXx) at Mesillas by year
Year
Hottest day (TXx)
1963
32.8 C (91.0 F)
1964
33.9 C (93.0 F)
1965
35.0 C (95.0 F)
1966
33.9 C (93.0 F)
1967
35.0 C (95.0 F)
1968
32.8 C (91.0 F)
1969
35.0 C (95.0 F)
1970
35.0 C (95.0 F)
1971
33.3 C (91.9 F)
1972
34.4 C (93.9 F)
1973
35.6 C (96.1 F)
1974
35.0 C (95.0 F)
1975
33.9 C (93.0 F)
1976
33.9 C (93.0 F)
1977
33.3 C (91.9 F)
1978
35.0 C (95.0 F)
1979
36.7 C (98.1 F)
1980
32.8 C (91.0 F)
1981
32.8 C (91.0 F)
1982
34.4 C (93.9 F)
1983
35.0 C (95.0 F)
1984
31.7 C (89.1 F)
1985
33.9 C (93.0 F)
1986
33.9 C (93.0 F)
1987
32.8 C (91.0 F)
1988
35.0 C (95.0 F)
1989
35.6 C (96.1 F)
1990
35.0 C (95.0 F)
1991
35.0 C (95.0 F)
1992
32.8 C (91.0 F)
1993
35.0 C (95.0 F)
1994
33.9 C (93.0 F)
1995
35.0 C (95.0 F)
1996
33.9 C (93.0 F)
1997
33.9 C (93.0 F)
1998
35.6 C (96.1 F)
1999
33.9 C (93.0 F)
2000
33.9 C (93.0 F)
2001
35.0 C (95.0 F)
2002
33.9 C (93.0 F)
2003
35.6 C (96.1 F)
2004
33.9 C (93.0 F)
2005
35.6 C (96.1 F)
2006
32.8 C (91.0 F)
2007
32.8 C (91.0 F)
2008
36.7 C (98.1 F)
2009
35.6 C (96.1 F)
2010
36.7 C (98.1 F)
2011
36.7 C (98.1 F)
2012
35.6 C (96.1 F)
2013
35.0 C (95.0 F)
Coldest night (TNn)
The coldest night of the year at Mesillas, 1963 to 2013. The record is -6.1 C (21.0 F) in 1973, marked on the chart; the median year is -2.2 C (28.0 F).
Coldest night (TNn) at Mesillas by year
Year
Coldest night (TNn)
1963
-5.0 C (23.0 F)
1964
-2.2 C (28.0 F)
1965
-2.2 C (28.0 F)
1966
-2.2 C (28.0 F)
1967
-4.4 C (24.1 F)
1968
-2.2 C (28.0 F)
1969
-2.2 C (28.0 F)
1970
-5.0 C (23.0 F)
1971
-4.4 C (24.1 F)
1972
-3.3 C (26.1 F)
1973
-6.1 C (21.0 F)
1974
-2.2 C (28.0 F)
1975
-6.1 C (21.0 F)
1976
-4.4 C (24.1 F)
1977
-2.2 C (28.0 F)
1978
-0.6 C (30.9 F)
1979
-1.7 C (28.9 F)
1980
0.0 C (32.0 F)
1981
-3.3 C (26.1 F)
1982
0.0 C (32.0 F)
1983
-2.8 C (27.0 F)
1984
-1.7 C (28.9 F)
1985
0.0 C (32.0 F)
1986
-1.1 C (30.0 F)
1987
-1.1 C (30.0 F)
1988
-3.3 C (26.1 F)
1989
0.0 C (32.0 F)
1990
-1.1 C (30.0 F)
1991
-1.1 C (30.0 F)
1992
-1.1 C (30.0 F)
1993
-1.1 C (30.0 F)
1994
-1.1 C (30.0 F)
1995
0.6 C (33.1 F)
1996
-1.1 C (30.0 F)
1997
-2.2 C (28.0 F)
1998
-1.1 C (30.0 F)
1999
-2.2 C (28.0 F)
2000
-1.1 C (30.0 F)
2001
-2.2 C (28.0 F)
2002
-2.2 C (28.0 F)
2003
-2.2 C (28.0 F)
2004
-6.1 C (21.0 F)
2005
-3.3 C (26.1 F)
2006
-3.3 C (26.1 F)
2007
0.6 C (33.1 F)
2008
-3.3 C (26.1 F)
2009
-2.2 C (28.0 F)
2010
-3.3 C (26.1 F)
2011
-4.4 C (24.1 F)
2012
0.0 C (32.0 F)
2013
-1.1 C (30.0 F)
Wettest day (Rx1day)
The wettest day of the year at Mesillas, 1963 to 2013. The record is 89.9 mm (3.5 in) in 2006, marked on the chart; the median year is 40.9 mm (1.6 in).
Wettest day (Rx1day) at Mesillas by year
Year
Wettest day (Rx1day)
1963
45.0 mm (1.8 in)
1964
26.9 mm (1.1 in)
1965
30.0 mm (1.2 in)
1966
44.5 mm (1.8 in)
1967
32.8 mm (1.3 in)
1968
45.0 mm (1.8 in)
1969
30.0 mm (1.2 in)
1970
40.9 mm (1.6 in)
1971
62.0 mm (2.4 in)
1972
30.0 mm (1.2 in)
1973
47.8 mm (1.9 in)
1974
47.0 mm (1.9 in)
1975
57.9 mm (2.3 in)
1976
53.8 mm (2.1 in)
1977
17.8 mm (0.7 in)
1978
62.0 mm (2.4 in)
1979
49.8 mm (2.0 in)
1980
18.8 mm (0.7 in)
1981
40.9 mm (1.6 in)
1982
24.4 mm (1.0 in)
1983
46.5 mm (1.8 in)
1984
30.0 mm (1.2 in)
1985
40.9 mm (1.6 in)
1986
47.5 mm (1.9 in)
1987
26.4 mm (1.0 in)
1988
39.9 mm (1.6 in)
1989
26.9 mm (1.1 in)
1990
40.9 mm (1.6 in)
1991
53.3 mm (2.1 in)
1992
39.9 mm (1.6 in)
1993
34.8 mm (1.4 in)
1994
31.8 mm (1.3 in)
1995
40.9 mm (1.6 in)
1996
54.9 mm (2.2 in)
1997
30.0 mm (1.2 in)
1998
46.0 mm (1.8 in)
1999
15.7 mm (0.6 in)
2000
25.9 mm (1.0 in)
2001
38.9 mm (1.5 in)
2002
59.9 mm (2.4 in)
2003
36.8 mm (1.4 in)
2004
69.9 mm (2.8 in)
2005
61.0 mm (2.4 in)
2006
89.9 mm (3.5 in)
2007
64.8 mm (2.6 in)
2008
45.0 mm (1.8 in)
2009
31.5 mm (1.2 in)
2010
45.5 mm (1.8 in)
2011
47.8 mm (1.9 in)
2012
38.9 mm (1.5 in)
2013
40.9 mm (1.6 in)
Wettest five days (Rx5day)
The wettest five days of the year at Mesillas, 1963 to 2013. The record is 157.5 mm (6.2 in) in 2008, marked on the chart; the median year is 76.4 mm (3.0 in).
Wettest five days (Rx5day) at Mesillas by year
Year
Wettest five days (Rx5day)
1963
89.7 mm (3.5 in)
1964
41.1 mm (1.6 in)
1965
72.2 mm (2.8 in)
1966
90.5 mm (3.6 in)
1967
80.6 mm (3.2 in)
1968
103.2 mm (4.1 in)
1969
50.6 mm (2.0 in)
1970
104.9 mm (4.1 in)
1971
101.9 mm (4.0 in)
1972
65.6 mm (2.6 in)
1973
142.6 mm (5.6 in)
1974
65.6 mm (2.6 in)
1975
115.6 mm (4.6 in)
1976
151.3 mm (6.0 in)
1977
39.9 mm (1.6 in)
1978
72.2 mm (2.8 in)
1979
68.4 mm (2.7 in)
1980
35.2 mm (1.4 in)
1981
70.9 mm (2.8 in)
1982
50.6 mm (2.0 in)
1983
100.9 mm (4.0 in)
1984
45.7 mm (1.8 in)
1985
48.5 mm (1.9 in)
1986
99.4 mm (3.9 in)
1987
39.6 mm (1.6 in)
1988
75.7 mm (3.0 in)
1989
73.0 mm (2.9 in)
1990
62.6 mm (2.5 in)
1991
155.5 mm (6.1 in)
1992
76.4 mm (3.0 in)
1993
57.4 mm (2.3 in)
1994
57.4 mm (2.3 in)
1995
90.5 mm (3.6 in)
1996
77.6 mm (3.1 in)
1997
60.2 mm (2.4 in)
1998
128.8 mm (5.1 in)
1999
38.6 mm (1.5 in)
2000
59.7 mm (2.4 in)
2001
88.5 mm (3.5 in)
2002
94.3 mm (3.7 in)
2003
67.3 mm (2.6 in)
2004
107.1 mm (4.2 in)
2005
105.5 mm (4.2 in)
2006
126.5 mm (5.0 in)
2007
132.9 mm (5.2 in)
2008
157.5 mm (6.2 in)
2009
55.4 mm (2.2 in)
2010
99.3 mm (3.9 in)
2011
110.6 mm (4.4 in)
2012
69.3 mm (2.7 in)
2013
80.3 mm (3.2 in)
Longest dry spell (CDD)
The longest dry spell of the year at Mesillas, 1963 to 2013. The record is 164 days in 1999, marked on the chart; the median year is 91 days.
Longest dry spell (CDD) at Mesillas by year
Year
Longest dry spell (CDD)
1963
31 days
1964
103 days
1965
57 days
1966
58 days
1967
46 days
1968
55 days
1969
105 days
1970
97 days
1971
134 days
1972
49 days
1973
76 days
1974
69 days
1975
114 days
1976
91 days
1977
67 days
1978
53 days
1979
111 days
1980
142 days
1981
81 days
1982
59 days
1983
126 days
1984
91 days
1985
83 days
1986
69 days
1987
92 days
1988
80 days
1989
107 days
1990
70 days
1991
118 days
1992
43 days
1993
82 days
1994
87 days
1995
143 days
1996
159 days
1997
58 days
1998
159 days
1999
164 days
2000
140 days
2001
61 days
2002
58 days
2003
117 days
2004
83 days
2005
124 days
2006
106 days
2007
57 days
2008
108 days
2009
126 days
2010
97 days
2011
81 days
2012
148 days
2013
141 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
21 years with a frost
Across 21 years with a frost, the median last spring frost at Mesillas falls on 9 February and the median first autumn frost on 28 November, which leaves a median of 288 days between them.
Frost dates and growing season at Mesillas
Measure
Median, all years
Earliest period
Recent period (1966 to 2011)
Recent against earliest
Fitted trend
Last spring frost
9 February
n/a
9 February
n/a
n/a
First autumn frost
28 November
n/a
28 November
n/a
n/a
Growing days
288 days
n/a
288 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
48 years, 1964 to 2012
A day with at least 41.0 mm (1.6 in) of rain is expected about once in 2 years. A day with at least 81.7 mm (3.2 in) of rain is expected about once in 100 years.
Rainfall return levels at Mesillas: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
41.0 mm (1.6 in)
5 years
54.2 mm (2.1 in)
10 years
61.9 mm (2.4 in)
25 years
70.6 mm (2.8 in)
50 years
76.4 mm (3.0 in)
Longer than the 48 years of record
100 years
81.7 mm (3.2 in)
Longer than the 48 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, 48 years of values from 1964 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: 89.9 mm (3.5 in) in 2006; 69.9 mm (2.8 in) in 2004; 64.8 mm (2.6 in) in 2007.
Station Changes
3 suspected
3 changes were suspected in the annual mean temperature of Mesillas, at 1979, 1991 and 2005. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1979 ran 0.4 C (0.8 F) lower than in the years before (likely change).
Relative to 5 neighbouring stations, the station's annual mean temperature from 1991 ran 0.5 C (0.9 F) lower than in the years before (likely change).
Relative to 5 neighbouring stations, the station's annual mean temperature from 2005 ran 0.6 C (1.0 F) lower than in the years before (likely change).
Suspected changes in the annual mean temperature at Mesillas, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1979
-0.4
-0.8
likely
5
1991
-0.5
-0.9
likely
5
2005
-0.6
-1.0
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 Mesillas standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Mesillas 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.