Ysleta Weather Records (USC00419966)

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

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

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

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.

Days with data per year at Ysleta
Year	Days with data	Share of year	Complete
1939	334	92%	Yes
1940	366	100%	Yes
1941	365	100%	Yes
1942	365	100%	Yes
1943	360	99%	Yes
1944	366	100%	Yes
1945	333	91%	Yes
1946	316	87%	No
1947	357	98%	Yes
1948	364	99%	Yes
1949	363	99%	Yes
1950	365	100%	Yes
1951	364	100%	Yes
1952	366	100%	Yes
1953	364	100%	Yes
1954	362	99%	Yes
1955	359	98%	Yes
1956	365	100%	Yes
1957	365	100%	Yes
1958	365	100%	Yes
1959	365	100%	Yes
1960	365	100%	Yes
1961	365	100%	Yes
1962	365	100%	Yes
1963	364	100%	Yes
1964	366	100%	Yes
1965	365	100%	Yes
1966	365	100%	Yes
1967	363	99%	Yes
1968	358	98%	Yes
1969	353	97%	Yes
1970	352	96%	Yes
1971	320	88%	No
1972	328	90%	No
1973	340	93%	Yes
1974	351	96%	Yes
1975	353	97%	Yes
1976	343	94%	Yes
1977	354	97%	Yes
1978	363	99%	Yes
1979	357	98%	Yes
1980	366	100%	Yes
1981	362	99%	Yes
1982	364	100%	Yes
1983	357	98%	Yes
1984	360	98%	Yes
1985	359	98%	Yes
1986	353	97%	Yes
1987	345	95%	Yes
1988	332	91%	Yes
1989	335	92%	Yes
1990	314	86%	No
1991	336	92%	Yes
1992	366	100%	Yes
1993	356	98%	Yes
1994	363	99%	Yes
1995	348	95%	Yes
1996	339	93%	Yes
1997	334	92%	Yes
1998	339	93%	Yes
1999	324	89%	No
2000	303	83%	No
2001	330	90%	Yes
2002	290	79%	No
2003	271	74%	No
2004	307	84%	No
2005	168	46%	No
2006	229	63%	No
2007	310	85%	No
2008	304	83%	No
2009	233	64%	No

Latest Records

Latest records at Ysleta
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 September 2009	Ysleta, US	daily rain	12.2 mm (0.5 in)	4.1 mm (0.16 in)	18 years	15 of 100 (Routine)
11 September 2009	Ysleta, US	daily rain	25.1 mm (1.0 in)	5.5 mm (0.22 in)	51 years	27 of 100 (Routine)
17 August 2009	Ysleta, US	daily high max	41.1 C (106.0 F)	0.5 C (0.9 F)	40 years	20 of 100 (Routine)
29 July 2009	Ysleta, US	daily high max	41.7 C (107.1 F)	1.7 C (3.1 F)	36 years	23 of 100 (Routine)
28 July 2009	Ysleta, US	daily high max	41.7 C (107.1 F)	0.6 C (1.1 F)	55 years	24 of 100 (Routine)
27 July 2009	Ysleta, US	daily high min	25.6 C (78.1 F)	1.7 C (3.1 F)	12 years	17 of 100 (Routine)
20 July 2009	Ysleta, US	daily high min (Tie)	24.4 C (75.9 F)	tie	4 years	2 of 100 (Routine)
15 July 2009	Ysleta, US	daily high max (Tie)	43.3 C (109.9 F)	tie	30 years	4 of 100 (Routine)
9 July 2009	Ysleta, US	daily high min (Tie)	25.0 C (77.0 F)	tie	58 years	6 of 100 (Routine)
8 July 2009	Ysleta, US	all-time high min (Tie)	28.9 C (84.0 F)	tie	57 years	11 of 100 (Routine)
28 June 2009	Ysleta, US	daily rain	43.4 mm (1.7 in)	32.7 mm (1.3 in)	66 years	66 of 100 (Major)
8 June 2009	Ysleta, US	daily high min (Tie)	22.8 C (73.0 F)	tie	8 years	2 of 100 (Routine)
12 May 2009	Ysleta, US	daily high min	22.2 C (72.0 F)	2.8 C (5.0 F)	14 years	18 of 100 (Routine)
10 May 2009	Ysleta, US	daily high max	38.3 C (100.9 F)	1.1 C (2.0 F)	8 years	11 of 100 (Routine)
5 May 2009	Ysleta, US	daily high min (Tie)	18.3 C (64.9 F)	tie	8 years	2 of 100 (Routine)
2 May 2009	Ysleta, US	daily high min	19.4 C (66.9 F)	0.5 C (0.9 F)	23 years	14 of 100 (Routine)
20 March 2009	Ysleta, US	daily high max	30.6 C (87.1 F)	1.2 C (2.2 F)	12 years	12 of 100 (Routine)
17 March 2009	Ysleta, US	daily high max (Tie)	29.4 C (84.9 F)	tie	20 years	3 of 100 (Routine)
6 March 2009	Ysleta, US	daily high min	11.1 C (52.0 F)	2.2 C (4.0 F)	23 years	18 of 100 (Routine)
6 March 2009	Ysleta, US	daily high max (Tie)	27.2 C (81.0 F)	tie	23 years	3 of 100 (Routine)

Climate Trend

45 complete years, 1940 to 1994

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 2026-10-17 (17 October 2026). Records are computed by this site and are not official.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).