Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Luis L. Leon. 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 Luis L. Leon, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
36.7 C (98.1 F)
-10.0 C (14.0 F)
n/a
n/a
Feb
37.8 C (100.0 F)
-6.7 C (19.9 F)
n/a
n/a
Mar
40.0 C (104.0 F)
-5.0 C (23.0 F)
n/a
n/a
Apr
40.0 C (104.0 F)
0.0 C (32.0 F)
n/a
n/a
May
43.9 C (111.0 F)
2.8 C (37.0 F)
n/a
n/a
Jun
45.0 C (113.0 F)
5.6 C (42.1 F)
n/a
n/a
Jul
45.6 C (114.1 F)
6.7 C (44.1 F)
n/a
n/a
Aug
43.9 C (111.0 F)
6.7 C (44.1 F)
n/a
n/a
Sep
41.1 C (106.0 F)
5.0 C (41.0 F)
n/a
n/a
Oct
39.4 C (102.9 F)
-3.3 C (26.1 F)
n/a
n/a
Nov
34.4 C (93.9 F)
-6.1 C (21.0 F)
n/a
n/a
Dec
35.0 C (95.0 F)
-8.9 C (16.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Luis L. Leon still stand. 1973 holds the most, with 155.
Standing records at Luis L. Leon by the year they were set
Year set
Standing records
1964
14
1965
71
1966
65
1967
50
1968
47
1969
37
1970
64
1971
33
1972
100
1973
155
1974
68
1975
36
1976
44
1977
46
1978
36
1979
37
1980
52
1981
25
1982
36
1983
27
1984
19
1985
25
1986
27
1987
41
1988
24
1989
32
1990
29
1991
13
1992
28
1993
16
1994
19
1995
23
1996
20
1997
21
1998
24
1999
15
2003
45
All-Time Record Progression
2 new records
2 all-time records were set at Luis L. Leon between 26 January 1999 and 9 July 2003. Each dot is a new record.
When Luis L. Leon set new all-time records
Date
Kind
Detail
1999-01-26
Record low minimum temperature
Record low minimum temperature -10.0 C (14.0 F)
2003-07-09
Record high maximum temperature
Record high maximum temperature 45.6 C (114.1 F)
Wettest Day of Each Month
Jul: 107.7 mm (4.2 in)
The wettest day on record for each calendar month at Luis L. Leon. The most was 107.7 mm (4.2 in) on 26 July 1973.
Record daily precipitation for each month at Luis L. Leon
Month
Record daily precipitation (mm)
Date
Jan
30.0 mm (1.2 in)
11 January 1982
Feb
25.9 mm (1.0 in)
19 February 1997
Mar
13.2 mm (0.5 in)
14 March 1994
Apr
19.1 mm (0.8 in)
8 April 1988
May
31.8 mm (1.3 in)
28 May 1984
Jun
48.8 mm (1.9 in)
26 June 1966
Jul
107.7 mm (4.2 in)
26 July 1973
Aug
89.9 mm (3.5 in)
4 August 1978
Sep
66.3 mm (2.6 in)
25 September 1978
Oct
65.8 mm (2.6 in)
8 October 2003
Nov
24.9 mm (1.0 in)
8 November 1992
Dec
37.8 mm (1.5 in)
21 December 1986
Period of Record Coverage
1964 to 2003
Complete yearUnder 90 percent of days
37 years of record at Luis L. Leon, 1964 to 2003. 15 years have data for under 90 percent of days and are left out of rankings: 1964, 1969, 1985, 1987, 1988, 1989, 1990, 1991 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 21 complete years at Luis L. Leon, 1965 to 2003. Blue stripes are years cooler than the station's own mean of 20.0 C (67.9 F); red stripes are warmer. The coolest year was 1973, at 18.4 C (65.0 F), and the warmest was 2003, at 21.6 C (70.8 F). The strongest colour marks a difference of 1.7 C (3.1 F).
Annual mean temperature at Luis L. Leon as warming stripes, 1965 to 2003
Year
Annual mean temperature
Difference from the station mean
1965
20.9 C
+0.97 C
1966
19.8 C
-0.13 C
1967
20.3 C
+0.33 C
1968
19.8 C
-0.21 C
1970
19.9 C
-0.09 C
1971
20.1 C
+0.10 C
1973
18.4 C
-1.60 C
1974
19.0 C
-0.98 C
1975
20.3 C
+0.29 C
1976
19.0 C
-1.01 C
1977
20.6 C
+0.59 C
1978
19.7 C
-0.24 C
1979
19.7 C
-0.25 C
1980
20.2 C
+0.21 C
1981
20.1 C
+0.14 C
1982
20.6 C
+0.65 C
1983
20.4 C
+0.41 C
1986
19.4 C
-0.59 C
1994
19.9 C
-0.07 C
1998
19.7 C
-0.23 C
2003
21.6 C
+1.62 C
This station does not have enough complete years (30 are needed) to fit a temperature trend.
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
1964 to 2003
Yearly extremes at Luis L. Leon: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
45.6 C (114.1 F)
2003
41.7 C (107.1 F)
37
Coldest night (TNn)
-10.0 C (14.0 F)
1999
-5.0 C (23.0 F)
37
Wettest day (Rx1day)
107.7 mm (4.2 in)
1973
35.3 mm (1.4 in)
37
Wettest five days (Rx5day)
151.2 mm (6.0 in)
2003
67.4 mm (2.7 in)
37
Longest dry spell (CDD)
186 days
1975
76 days
37
Hottest day (TXx)
The hottest day of the year at Luis L. Leon, 1964 to 2003. The record is 45.6 C (114.1 F) in 2003, marked on the chart; the median year is 41.7 C (107.1 F).
Hottest day (TXx) at Luis L. Leon by year
Year
Hottest day (TXx)
1964
38.9 C (102.0 F)
1965
42.8 C (109.0 F)
1966
41.7 C (107.1 F)
1967
42.2 C (108.0 F)
1968
43.3 C (109.9 F)
1969
45.0 C (113.0 F)
1970
43.9 C (111.0 F)
1971
41.1 C (106.0 F)
1972
40.6 C (105.1 F)
1973
45.0 C (113.0 F)
1974
42.8 C (109.0 F)
1975
45.0 C (113.0 F)
1976
43.9 C (111.0 F)
1977
40.6 C (105.1 F)
1978
41.7 C (107.1 F)
1979
42.2 C (108.0 F)
1980
43.3 C (109.9 F)
1981
43.9 C (111.0 F)
1982
41.7 C (107.1 F)
1983
42.8 C (109.0 F)
1984
41.1 C (106.0 F)
1985
40.6 C (105.1 F)
1986
41.1 C (106.0 F)
1987
40.0 C (104.0 F)
1988
38.9 C (102.0 F)
1989
40.0 C (104.0 F)
1990
40.0 C (104.0 F)
1991
40.0 C (104.0 F)
1992
40.0 C (104.0 F)
1993
38.9 C (102.0 F)
1994
41.7 C (107.1 F)
1995
40.0 C (104.0 F)
1996
40.0 C (104.0 F)
1997
40.0 C (104.0 F)
1998
44.4 C (111.9 F)
1999
41.1 C (106.0 F)
2003
45.6 C (114.1 F)
Coldest night (TNn)
The coldest night of the year at Luis L. Leon, 1964 to 2003. The record is -10.0 C (14.0 F) in 1999, marked on the chart; the median year is -5.0 C (23.0 F).
Coldest night (TNn) at Luis L. Leon by year
Year
Coldest night (TNn)
1964
-2.8 C (27.0 F)
1965
-6.7 C (19.9 F)
1966
-6.1 C (21.0 F)
1967
-6.7 C (19.9 F)
1968
-6.1 C (21.0 F)
1969
-5.0 C (23.0 F)
1970
-5.0 C (23.0 F)
1971
-5.0 C (23.0 F)
1972
-7.2 C (19.0 F)
1973
-5.0 C (23.0 F)
1974
-3.3 C (26.1 F)
1975
-7.2 C (19.0 F)
1976
-5.6 C (21.9 F)
1977
-2.2 C (28.0 F)
1978
-1.1 C (30.0 F)
1979
-3.9 C (25.0 F)
1980
-4.4 C (24.1 F)
1981
-1.1 C (30.0 F)
1982
-2.2 C (28.0 F)
1983
-5.0 C (23.0 F)
1984
-4.4 C (24.1 F)
1985
-6.1 C (21.0 F)
1986
-4.4 C (24.1 F)
1987
-8.3 C (17.1 F)
1988
-7.8 C (18.0 F)
1989
-8.9 C (16.0 F)
1990
-5.6 C (21.9 F)
1991
-4.4 C (24.1 F)
1992
-6.1 C (21.0 F)
1993
-5.0 C (23.0 F)
1994
-7.2 C (19.0 F)
1995
-5.0 C (23.0 F)
1996
-5.0 C (23.0 F)
1997
-8.9 C (16.0 F)
1998
-6.1 C (21.0 F)
1999
-10.0 C (14.0 F)
2003
-5.0 C (23.0 F)
Wettest day (Rx1day)
The wettest day of the year at Luis L. Leon, 1964 to 2003. The record is 107.7 mm (4.2 in) in 1973, marked on the chart; the median year is 35.3 mm (1.4 in).
Wettest day (Rx1day) at Luis L. Leon by year
Year
Wettest day (Rx1day)
1964
11.2 mm (0.4 in)
1965
57.9 mm (2.3 in)
1966
51.3 mm (2.0 in)
1967
62.5 mm (2.5 in)
1968
25.7 mm (1.0 in)
1969
20.6 mm (0.8 in)
1970
50.8 mm (2.0 in)
1971
28.4 mm (1.1 in)
1972
56.6 mm (2.2 in)
1973
107.7 mm (4.2 in)
1974
41.1 mm (1.6 in)
1975
11.9 mm (0.5 in)
1976
38.6 mm (1.5 in)
1977
48.3 mm (1.9 in)
1978
89.9 mm (3.5 in)
1979
28.2 mm (1.1 in)
1980
30.5 mm (1.2 in)
1981
33.8 mm (1.3 in)
1982
30.0 mm (1.2 in)
1983
23.6 mm (0.9 in)
1984
41.9 mm (1.6 in)
1985
56.4 mm (2.2 in)
1986
64.8 mm (2.6 in)
1987
42.9 mm (1.7 in)
1988
35.3 mm (1.4 in)
1989
29.5 mm (1.2 in)
1990
31.8 mm (1.3 in)
1991
30.0 mm (1.2 in)
1992
27.9 mm (1.1 in)
1993
20.8 mm (0.8 in)
1994
17.3 mm (0.7 in)
1995
47.0 mm (1.9 in)
1996
67.8 mm (2.7 in)
1997
31.8 mm (1.3 in)
1998
35.8 mm (1.4 in)
1999
27.4 mm (1.1 in)
2003
65.8 mm (2.6 in)
Wettest five days (Rx5day)
The wettest five days of the year at Luis L. Leon, 1964 to 2003. The record is 151.2 mm (6.0 in) in 2003, marked on the chart; the median year is 67.4 mm (2.7 in).
Wettest five days (Rx5day) at Luis L. Leon by year
Year
Wettest five days (Rx5day)
1964
19.0 mm (0.7 in)
1965
79.0 mm (3.1 in)
1966
70.4 mm (2.8 in)
1967
83.6 mm (3.3 in)
1968
67.4 mm (2.7 in)
1969
43.5 mm (1.7 in)
1970
61.5 mm (2.4 in)
1971
68.8 mm (2.7 in)
1972
72.2 mm (2.8 in)
1973
119.6 mm (4.7 in)
1974
105.4 mm (4.1 in)
1975
21.1 mm (0.8 in)
1976
59.4 mm (2.3 in)
1977
116.2 mm (4.6 in)
1978
115.6 mm (4.6 in)
1979
46.0 mm (1.8 in)
1980
87.2 mm (3.4 in)
1981
83.1 mm (3.3 in)
1982
30.0 mm (1.2 in)
1983
30.0 mm (1.2 in)
1984
68.1 mm (2.7 in)
1985
58.0 mm (2.3 in)
1986
97.7 mm (3.8 in)
1987
82.0 mm (3.2 in)
1988
61.7 mm (2.4 in)
1989
44.6 mm (1.8 in)
1990
63.6 mm (2.5 in)
1991
46.3 mm (1.8 in)
1992
44.7 mm (1.8 in)
1993
43.4 mm (1.7 in)
1994
34.0 mm (1.3 in)
1995
92.7 mm (3.6 in)
1996
129.6 mm (5.1 in)
1997
53.4 mm (2.1 in)
1998
74.1 mm (2.9 in)
1999
46.0 mm (1.8 in)
2003
151.2 mm (6.0 in)
Longest dry spell (CDD)
The longest dry spell of the year at Luis L. Leon, 1964 to 2003. The record is 186 days in 1975, marked on the chart; the median year is 76 days.
Longest dry spell (CDD) at Luis L. Leon by year
Year
Longest dry spell (CDD)
1964
43 days
1965
114 days
1966
103 days
1967
77 days
1968
63 days
1969
61 days
1970
91 days
1971
178 days
1972
147 days
1973
96 days
1974
71 days
1975
186 days
1976
138 days
1977
104 days
1978
42 days
1979
76 days
1980
129 days
1981
70 days
1982
75 days
1983
53 days
1984
105 days
1985
31 days
1986
116 days
1987
97 days
1988
40 days
1989
38 days
1990
10 days
1991
12 days
1992
35 days
1993
30 days
1994
69 days
1995
144 days
1996
76 days
1997
49 days
1998
160 days
1999
96 days
2003
96 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
20 years with a frost
Across 20 years with a frost, the median last spring frost at Luis L. Leon falls on 1 March and the median first autumn frost on 25 November, which leaves a median of 271 days between them.
Frost dates and growing season at Luis L. Leon
Measure
Median, all years
Earliest period
Recent period (1965 to 2003)
Recent against earliest
Fitted trend
Last spring frost
1 March
n/a
1 March
n/a
n/a
First autumn frost
25 November
n/a
25 November
n/a
n/a
Growing days
271 days
n/a
271 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.
Download the Data
Data for Luis L. Leon standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Luis L. Leon 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.