Record envelope, standing records and threshold days for Ysleta (USC00419966), Texas, United States, with 71 years of record.
Key Facts for Ysleta
Ysleta (USC00419966) is a weather station in Texas, United States at 31.70 latitude and -106.32 longitude, 1,119 m (3,670 ft) above sea level.
The station reports from 1939 to 2009, 71 years of record.
1,464 records set at Ysleta still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Ysleta set a daily record precipitation of 12.2 mm (0.5 in) on 17 September 2009.
About the Station
Location: Texas, United States, 31.70 latitude, -106.32 longitude.
Elevation: 1,119 m (3,670 ft).
Period of record: 1939 to 2009, 71 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
0 days at or beyond a record
Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Ysleta. 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 Ysleta, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
27.8 C (82.0 F)
-23.3 C (-9.9 F)
n/a
n/a
Feb
29.4 C (84.9 F)
-14.4 C (6.1 F)
n/a
n/a
Mar
35.0 C (95.0 F)
-10.6 C (12.9 F)
n/a
n/a
Apr
38.9 C (102.0 F)
-5.6 C (21.9 F)
n/a
n/a
May
43.3 C (109.9 F)
-2.8 C (27.0 F)
n/a
n/a
Jun
46.1 C (115.0 F)
5.0 C (41.0 F)
n/a
n/a
Jul
43.9 C (111.0 F)
8.3 C (46.9 F)
n/a
n/a
Aug
46.1 C (115.0 F)
9.4 C (48.9 F)
n/a
n/a
Sep
42.2 C (108.0 F)
1.1 C (34.0 F)
n/a
n/a
Oct
37.2 C (99.0 F)
-3.9 C (25.0 F)
n/a
n/a
Nov
31.7 C (89.1 F)
-13.3 C (8.1 F)
n/a
n/a
Dec
27.8 C (82.0 F)
-17.8 C (0.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Ysleta still stand. 1940 holds the most, with 49.
Standing records at Ysleta by the year they were set
Year set
Standing records
1939
20
1940
49
1941
26
1942
23
1943
17
1944
31
1945
41
1946
21
1947
13
1948
28
1949
18
1950
23
1951
27
1952
21
1953
41
1954
9
1955
25
1956
20
1957
28
1958
13
1959
12
1960
17
1961
16
1962
26
1963
19
1964
18
1965
20
1966
20
1967
22
1968
15
1969
18
1970
14
1971
11
1972
18
1973
18
1974
10
1975
13
1976
13
1977
10
1978
15
1979
29
1980
31
1981
33
1982
19
1983
22
1984
26
1985
6
1986
16
1987
17
1988
16
1989
33
1990
21
1991
8
1992
17
1993
7
1994
18
1995
14
1996
29
1997
16
1998
25
1999
20
2000
38
2001
18
2002
24
2003
26
2004
18
2005
20
2006
17
2007
21
2008
21
2009
19
All-Time Record Progression
7 new records
7 all-time records were set at Ysleta between 8 January 1971 and 27 June 1994. Each dot is a new record.
When Ysleta set new all-time records
Date
Kind
Detail
1971-01-08
Record snow depth
Record snow depth 17.8 cm (7.0 in)
1973-06-30
Record high maximum temperature
Record high maximum temperature 43.9 C (111.0 F)
1974-09-23
Record daily precipitation
Record daily precipitation 83.8 mm (3.3 in)
1981-06-21
Record high maximum temperature
Record high maximum temperature 44.4 C (111.9 F)
1981-06-23
Record high maximum temperature
Record high maximum temperature 45.0 C (113.0 F)
1990-06-26
Record high maximum temperature
Record high maximum temperature 45.6 C (114.1 F)
1994-06-27
Record high maximum temperature
Record high maximum temperature 46.1 C (115.0 F)
Wettest Day of Each Month
Sep: 83.8 mm (3.3 in)
The wettest day on record for each calendar month at Ysleta. The most was 83.8 mm (3.3 in) on 23 September 1974.
Record daily precipitation for each month at Ysleta
Month
Record daily precipitation (mm)
Date
Jan
25.1 mm (1.0 in)
4 January 1998
Feb
27.9 mm (1.1 in)
20 February 2003
Mar
40.4 mm (1.6 in)
16 March 1941
Apr
28.4 mm (1.1 in)
24 April 1966
May
31.0 mm (1.2 in)
15 May 2007
Jun
49.0 mm (1.9 in)
2 June 2000
Jul
78.2 mm (3.1 in)
6 July 1968
Aug
42.7 mm (1.7 in)
26 August 1972
Sep
83.8 mm (3.3 in)
23 September 1974
Oct
57.4 mm (2.3 in)
1 October 1982
Nov
48.5 mm (1.9 in)
13 November 2004
Dec
26.4 mm (1.0 in)
4 December 1992
Period of Record Coverage
1939 to 2009
Complete yearUnder 90 percent of days
71 years of record at Ysleta, 1939 to 2009. 14 years have data for under 90 percent of days and are left out of rankings: 1946, 1971, 1972, 1990, 1999, 2000, 2002, 2003 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 45 complete years at Ysleta, 1940 to 1994. Blue stripes are years cooler than the station's own mean of 17.1 C (62.8 F); red stripes are warmer. The coolest year was 1944, at 15.4 C (59.7 F), and the warmest was 1994, at 19.3 C (66.8 F). The strongest colour marks a difference of 2.3 C (4.1 F).
Annual mean temperature at Ysleta as warming stripes, 1940 to 1994
Year
Annual mean temperature
Difference from the station mean
1940
15.6 C
-1.45 C
1941
15.9 C
-1.22 C
1942
16.1 C
-1.02 C
1943
16.7 C
-0.35 C
1944
15.4 C
-1.71 C
1948
16.3 C
-0.76 C
1949
16.3 C
-0.80 C
1950
17.7 C
+0.56 C
1951
17.1 C
+0.01 C
1952
16.9 C
-0.17 C
1953
16.7 C
-0.36 C
1954
17.6 C
+0.47 C
1955
16.8 C
-0.29 C
1956
16.8 C
-0.28 C
1957
17.4 C
+0.27 C
1958
17.1 C
-0.03 C
1959
16.8 C
-0.33 C
1960
16.5 C
-0.58 C
1961
16.4 C
-0.69 C
1962
17.2 C
+0.07 C
1963
17.2 C
+0.11 C
1964
16.3 C
-0.77 C
1965
17.1 C
-0.02 C
1966
16.3 C
-0.82 C
1967
16.5 C
-0.61 C
1968
16.8 C
-0.29 C
1969
17.5 C
+0.45 C
1970
16.8 C
-0.26 C
1972
17.3 C
+0.23 C
1973
16.6 C
-0.54 C
1974
17.4 C
+0.28 C
1975
16.5 C
-0.56 C
1976
16.5 C
-0.60 C
1977
17.9 C
+0.77 C
1978
17.6 C
+0.54 C
1979
16.5 C
-0.56 C
1980
17.8 C
+0.67 C
1981
19.0 C
+1.90 C
1982
18.9 C
+1.78 C
1983
17.7 C
+0.64 C
1984
18.1 C
+0.98 C
1985
17.9 C
+0.82 C
1992
17.8 C
+0.74 C
1993
18.5 C
+1.39 C
1994
19.3 C
+2.22 C
The annual mean temperature here has risen by 0.4 C (0.3 to 0.5) per decade over 1940 to 1994. In Fahrenheit: 0.7 F (0.5 to 1.0) per decade. The slope is a straight line fitted to 45 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Ysleta
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.4 C (0.3 to 0.5) per decade
0.7 F (0.5 to 1.0) per decade
1940 to 1994
45
Rise
Mean daily maximum
0.3 C (0.2 to 0.5) per decade
0.6 F (0.3 to 0.8) per decade
1940 to 1994
45
Rise
Mean daily minimum
0.5 C (0.4 to 0.7) per decade
0.9 F (0.7 to 1.2) per decade
1940 to 1994
45
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
1939 to 2009
Yearly extremes at Ysleta: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
46.1 C (115.0 F)
1994
42.2 C (108.0 F)
71
Coldest night (TNn)
-23.3 C (-9.9 F)
1962
-10.6 C (12.9 F)
71
Wettest day (Rx1day)
83.8 mm (3.3 in)
1974
27.9 mm (1.1 in)
71
Wettest five days (Rx5day)
199.3 mm (7.8 in)
1974
38.6 mm (1.5 in)
71
Longest dry spell (CDD)
143 days
1950
64 days
71
Hottest day (TXx)
The hottest day of the year at Ysleta, 1939 to 2009. The record is 46.1 C (115.0 F) in 1994, marked on the chart; the median year is 42.2 C (108.0 F).
Hottest day (TXx) at Ysleta by year
Year
Hottest day (TXx)
1939
41.1 C (106.0 F)
1940
40.0 C (104.0 F)
1941
37.8 C (100.0 F)
1942
40.0 C (104.0 F)
1943
38.9 C (102.0 F)
1944
40.6 C (105.1 F)
1945
39.4 C (102.9 F)
1946
40.0 C (104.0 F)
1947
39.4 C (102.9 F)
1948
40.6 C (105.1 F)
1949
39.4 C (102.9 F)
1950
40.0 C (104.0 F)
1951
42.8 C (109.0 F)
1952
40.0 C (104.0 F)
1953
42.2 C (108.0 F)
1954
41.1 C (106.0 F)
1955
41.1 C (106.0 F)
1956
40.6 C (105.1 F)
1957
42.8 C (109.0 F)
1958
42.2 C (108.0 F)
1959
40.0 C (104.0 F)
1960
42.2 C (108.0 F)
1961
40.6 C (105.1 F)
1962
38.9 C (102.0 F)
1963
41.1 C (106.0 F)
1964
41.7 C (107.1 F)
1965
40.0 C (104.0 F)
1966
40.0 C (104.0 F)
1967
39.4 C (102.9 F)
1968
42.8 C (109.0 F)
1969
41.7 C (107.1 F)
1970
42.2 C (108.0 F)
1971
40.6 C (105.1 F)
1972
42.8 C (109.0 F)
1973
43.9 C (111.0 F)
1974
42.8 C (109.0 F)
1975
40.0 C (104.0 F)
1976
40.6 C (105.1 F)
1977
43.3 C (109.9 F)
1978
43.3 C (109.9 F)
1979
43.3 C (109.9 F)
1980
43.3 C (109.9 F)
1981
45.0 C (113.0 F)
1982
43.3 C (109.9 F)
1983
43.3 C (109.9 F)
1984
42.8 C (109.0 F)
1985
42.2 C (108.0 F)
1986
40.6 C (105.1 F)
1987
42.2 C (108.0 F)
1988
40.6 C (105.1 F)
1989
43.9 C (111.0 F)
1990
45.6 C (114.1 F)
1991
41.7 C (107.1 F)
1992
42.8 C (109.0 F)
1993
41.7 C (107.1 F)
1994
46.1 C (115.0 F)
1995
43.3 C (109.9 F)
1996
43.3 C (109.9 F)
1997
42.8 C (109.0 F)
1998
44.4 C (111.9 F)
1999
43.9 C (111.0 F)
2000
42.2 C (108.0 F)
2001
42.2 C (108.0 F)
2002
46.1 C (115.0 F)
2003
42.8 C (109.0 F)
2004
42.8 C (109.0 F)
2005
43.9 C (111.0 F)
2006
43.3 C (109.9 F)
2007
42.8 C (109.0 F)
2008
43.3 C (109.9 F)
2009
43.3 C (109.9 F)
Coldest night (TNn)
The coldest night of the year at Ysleta, 1939 to 2009. The record is -23.3 C (-9.9 F) in 1962, marked on the chart; the median year is -10.6 C (12.9 F).
Coldest night (TNn) at Ysleta by year
Year
Coldest night (TNn)
1939
-11.7 C (10.9 F)
1940
-13.3 C (8.1 F)
1941
-10.0 C (14.0 F)
1942
-10.6 C (12.9 F)
1943
-11.1 C (12.0 F)
1944
-12.8 C (9.0 F)
1945
-10.0 C (14.0 F)
1946
-12.8 C (9.0 F)
1947
-12.2 C (10.0 F)
1948
-21.1 C (-6.0 F)
1949
-18.9 C (-2.0 F)
1950
-11.7 C (10.9 F)
1951
-14.4 C (6.1 F)
1952
-11.1 C (12.0 F)
1953
-17.8 C (0.0 F)
1954
-11.7 C (10.9 F)
1955
-9.4 C (15.1 F)
1956
-11.7 C (10.9 F)
1957
-10.0 C (14.0 F)
1958
-11.7 C (10.9 F)
1959
-12.2 C (10.0 F)
1960
-10.0 C (14.0 F)
1961
-7.2 C (19.0 F)
1962
-23.3 C (-9.9 F)
1963
-12.2 C (10.0 F)
1964
-13.3 C (8.1 F)
1965
-10.6 C (12.9 F)
1966
-12.2 C (10.0 F)
1967
-15.0 C (5.0 F)
1968
-11.1 C (12.0 F)
1969
-8.9 C (16.0 F)
1970
-11.7 C (10.9 F)
1971
-15.0 C (5.0 F)
1972
-12.8 C (9.0 F)
1973
-12.2 C (10.0 F)
1974
-10.0 C (14.0 F)
1975
-9.4 C (15.1 F)
1976
-13.3 C (8.1 F)
1977
-11.7 C (10.9 F)
1978
-13.3 C (8.1 F)
1979
-11.7 C (10.9 F)
1980
-10.6 C (12.9 F)
1981
-6.7 C (19.9 F)
1982
-8.3 C (17.1 F)
1983
-12.8 C (9.0 F)
1984
-9.4 C (15.1 F)
1985
-11.1 C (12.0 F)
1986
-6.7 C (19.9 F)
1987
-13.9 C (7.0 F)
1988
-7.2 C (19.0 F)
1989
-10.6 C (12.9 F)
1990
-11.1 C (12.0 F)
1991
-5.6 C (21.9 F)
1992
-8.3 C (17.1 F)
1993
-6.7 C (19.9 F)
1994
-7.2 C (19.0 F)
1995
-3.9 C (25.0 F)
1996
-6.1 C (21.0 F)
1997
-10.6 C (12.9 F)
1998
-6.7 C (19.9 F)
1999
-5.6 C (21.9 F)
2000
-5.6 C (21.9 F)
2001
-7.2 C (19.0 F)
2002
-6.7 C (19.9 F)
2003
-3.9 C (25.0 F)
2004
-8.9 C (16.0 F)
2005
-8.3 C (17.1 F)
2006
-7.8 C (18.0 F)
2007
-5.6 C (21.9 F)
2008
-6.1 C (21.0 F)
2009
-5.6 C (21.9 F)
Wettest day (Rx1day)
The wettest day of the year at Ysleta, 1939 to 2009. The record is 83.8 mm (3.3 in) in 1974, marked on the chart; the median year is 27.9 mm (1.1 in).
Wettest day (Rx1day) at Ysleta by year
Year
Wettest day (Rx1day)
1939
23.6 mm (0.9 in)
1940
16.5 mm (0.6 in)
1941
45.7 mm (1.8 in)
1942
23.1 mm (0.9 in)
1943
25.4 mm (1.0 in)
1944
29.5 mm (1.2 in)
1945
40.4 mm (1.6 in)
1946
20.6 mm (0.8 in)
1947
19.3 mm (0.8 in)
1948
18.3 mm (0.7 in)
1949
20.8 mm (0.8 in)
1950
35.6 mm (1.4 in)
1951
24.9 mm (1.0 in)
1952
31.8 mm (1.3 in)
1953
24.9 mm (1.0 in)
1954
27.9 mm (1.1 in)
1955
34.3 mm (1.4 in)
1956
11.7 mm (0.5 in)
1957
22.4 mm (0.9 in)
1958
59.7 mm (2.4 in)
1959
20.8 mm (0.8 in)
1960
25.4 mm (1.0 in)
1961
15.2 mm (0.6 in)
1962
47.2 mm (1.9 in)
1963
30.5 mm (1.2 in)
1964
19.6 mm (0.8 in)
1965
42.2 mm (1.7 in)
1966
41.1 mm (1.6 in)
1967
20.6 mm (0.8 in)
1968
78.2 mm (3.1 in)
1969
18.3 mm (0.7 in)
1970
20.3 mm (0.8 in)
1971
14.5 mm (0.6 in)
1972
42.7 mm (1.7 in)
1973
34.3 mm (1.4 in)
1974
83.8 mm (3.3 in)
1975
47.5 mm (1.9 in)
1976
17.8 mm (0.7 in)
1977
40.1 mm (1.6 in)
1978
40.1 mm (1.6 in)
1979
22.6 mm (0.9 in)
1980
35.3 mm (1.4 in)
1981
30.0 mm (1.2 in)
1982
57.4 mm (2.3 in)
1983
29.2 mm (1.1 in)
1984
37.3 mm (1.5 in)
1985
48.3 mm (1.9 in)
1986
21.8 mm (0.9 in)
1987
34.3 mm (1.4 in)
1988
24.1 mm (0.9 in)
1989
27.9 mm (1.1 in)
1990
31.8 mm (1.3 in)
1991
25.9 mm (1.0 in)
1992
26.4 mm (1.0 in)
1993
19.3 mm (0.8 in)
1994
24.9 mm (1.0 in)
1995
17.8 mm (0.7 in)
1996
42.2 mm (1.7 in)
1997
60.5 mm (2.4 in)
1998
25.1 mm (1.0 in)
1999
10.7 mm (0.4 in)
2000
49.0 mm (1.9 in)
2001
12.7 mm (0.5 in)
2002
20.3 mm (0.8 in)
2003
27.9 mm (1.1 in)
2004
48.5 mm (1.9 in)
2005
8.9 mm (0.35 in)
2006
36.1 mm (1.4 in)
2007
31.0 mm (1.2 in)
2008
58.4 mm (2.3 in)
2009
43.4 mm (1.7 in)
Wettest five days (Rx5day)
The wettest five days of the year at Ysleta, 1939 to 2009. The record is 199.3 mm (7.8 in) in 1974, marked on the chart; the median year is 38.6 mm (1.5 in).
Wettest five days (Rx5day) at Ysleta by year
Year
Wettest five days (Rx5day)
1939
26.2 mm (1.0 in)
1940
16.5 mm (0.6 in)
1941
52.1 mm (2.1 in)
1942
53.6 mm (2.1 in)
1943
39.1 mm (1.5 in)
1944
35.8 mm (1.4 in)
1945
53.1 mm (2.1 in)
1946
24.7 mm (1.0 in)
1947
21.8 mm (0.9 in)
1948
19.3 mm (0.8 in)
1949
34.5 mm (1.4 in)
1950
41.2 mm (1.6 in)
1951
26.9 mm (1.1 in)
1952
36.9 mm (1.5 in)
1953
24.9 mm (1.0 in)
1954
51.3 mm (2.0 in)
1955
35.1 mm (1.4 in)
1956
22.1 mm (0.9 in)
1957
37.9 mm (1.5 in)
1958
95.2 mm (3.7 in)
1959
38.6 mm (1.5 in)
1960
67.7 mm (2.7 in)
1961
28.7 mm (1.1 in)
1962
79.9 mm (3.1 in)
1963
30.5 mm (1.2 in)
1964
33.8 mm (1.3 in)
1965
66.8 mm (2.6 in)
1966
86.2 mm (3.4 in)
1967
23.6 mm (0.9 in)
1968
130.0 mm (5.1 in)
1969
19.9 mm (0.8 in)
1970
28.2 mm (1.1 in)
1971
27.2 mm (1.1 in)
1972
78.0 mm (3.1 in)
1973
45.5 mm (1.8 in)
1974
199.3 mm (7.8 in)
1975
48.3 mm (1.9 in)
1976
27.8 mm (1.1 in)
1977
47.3 mm (1.9 in)
1978
63.6 mm (2.5 in)
1979
52.1 mm (2.1 in)
1980
45.2 mm (1.8 in)
1981
48.3 mm (1.9 in)
1982
58.2 mm (2.3 in)
1983
40.6 mm (1.6 in)
1984
65.2 mm (2.6 in)
1985
49.9 mm (2.0 in)
1986
41.2 mm (1.6 in)
1987
35.3 mm (1.4 in)
1988
35.1 mm (1.4 in)
1989
35.0 mm (1.4 in)
1990
46.6 mm (1.8 in)
1991
54.4 mm (2.1 in)
1992
34.6 mm (1.4 in)
1993
21.6 mm (0.9 in)
1994
17.0 mm (0.7 in)
1995
18.3 mm (0.7 in)
1996
48.8 mm (1.9 in)
1997
24.1 mm (0.9 in)
1998
27.7 mm (1.1 in)
1999
19.2 mm (0.8 in)
2000
49.5 mm (1.9 in)
2001
12.7 mm (0.5 in)
2002
34.0 mm (1.3 in)
2003
61.6 mm (2.4 in)
2004
77.5 mm (3.1 in)
2005
14.2 mm (0.6 in)
2006
71.4 mm (2.8 in)
2007
33.8 mm (1.3 in)
2008
85.8 mm (3.4 in)
2009
49.0 mm (1.9 in)
Longest dry spell (CDD)
The longest dry spell of the year at Ysleta, 1939 to 2009. The record is 143 days in 1950, marked on the chart; the median year is 64 days.
Longest dry spell (CDD) at Ysleta by year
Year
Longest dry spell (CDD)
1939
47 days
1940
58 days
1941
30 days
1942
61 days
1943
140 days
1944
67 days
1945
84 days
1946
89 days
1947
53 days
1948
96 days
1949
65 days
1950
143 days
1951
64 days
1952
130 days
1953
59 days
1954
91 days
1955
70 days
1956
111 days
1957
72 days
1958
33 days
1959
101 days
1960
77 days
1961
104 days
1962
69 days
1963
120 days
1964
98 days
1965
89 days
1966
48 days
1967
65 days
1968
52 days
1969
46 days
1970
87 days
1971
100 days
1972
125 days
1973
87 days
1974
110 days
1975
99 days
1976
61 days
1977
62 days
1978
62 days
1979
85 days
1980
66 days
1981
39 days
1982
57 days
1983
46 days
1984
71 days
1985
51 days
1986
58 days
1987
41 days
1988
44 days
1989
55 days
1990
49 days
1991
45 days
1992
67 days
1993
59 days
1994
38 days
1995
55 days
1996
74 days
1997
36 days
1998
49 days
1999
65 days
2000
65 days
2001
78 days
2002
61 days
2003
23 days
2004
45 days
2005
31 days
2006
28 days
2007
28 days
2008
67 days
2009
50 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
45 years with a frost
Across 45 years with a frost, the median last spring frost at Ysleta falls on 1 April and the median first autumn frost on 3 November, which leaves a median of 219 days between them.
Fitted over all years, the growing season changes by +5.8 days per decade at this station.
Frost dates and growing season at Ysleta
Measure
Median, all years
Earliest period
Recent period (1958 to 1994)
Recent against earliest
Fitted trend
Last spring frost
1 April
n/a
27 March
n/a
-3.3 days per decade
First autumn frost
3 November
n/a
3 November
n/a
+2.4 days per decade
Growing days
219 days
n/a
226 days
n/a
+5.8 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
58 years, 1939 to 2001
A day with at least 27.6 mm (1.1 in) of rain is expected about once in 2 years. A day with at least 85.9 mm (3.4 in) of rain is expected about once in 100 years.
Rainfall return levels at Ysleta: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
27.6 mm (1.1 in)
5 years
40.2 mm (1.6 in)
10 years
49.7 mm (2.0 in)
25 years
63.0 mm (2.5 in)
50 years
74.0 mm (2.9 in)
100 years
85.9 mm (3.4 in)
Longer than the 58 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, 58 years of values from 1939 to 2001.
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: 83.8 mm (3.3 in) in 1974; 78.2 mm (3.1 in) in 1968; 59.7 mm (2.4 in) in 1958.
Station Changes
2 suspected
2 changes were suspected in the annual mean temperature of Ysleta, at 1950 and 1981. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1950 ran 0.6 C (1.1 F) higher than in the years before (possible change).
Relative to 5 neighbouring stations, the station's annual mean temperature from 1981 ran 1.0 C (1.7 F) higher than in the years before (likely change).
Suspected changes in the annual mean temperature at Ysleta, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1950
+0.6
+1.1
possible
5
1981
+1.0
+1.7
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 Ysleta standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Ysleta 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 2026-10-12 (12 October 2026). Records are computed by this site and are not official.