Sierra Blanca 2 E Weather Records (USC00418305)

Record envelope, standing records and threshold days for Sierra Blanca 2 E (USC00418305), Texas, United States, with 110 years of record.

Key Facts for Sierra Blanca 2 E

Sierra Blanca 2 E (USC00418305) is a weather station in Texas, United States at 31.18 latitude and -105.35 longitude, 1,399 m (4,590 ft) above sea level.
The station reports from 1893 to 2002, 110 years of record.
1,464 records set at Sierra Blanca 2 E still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Sierra Blanca 2 E tied a daily record low maximum temperature of 21.1 C (70.0 F) on 20 September 2002.

About the Station

Location: Texas, United States, 31.18 latitude, -105.35 longitude.
Elevation: 1,399 m (4,590 ft).
Period of record: 1893 to 2002, 110 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 Sierra Blanca 2 E. 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 Sierra Blanca 2 E, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	25.0 C (77.0 F)	-15.6 C (3.9 F)	n/a	n/a
Feb	31.7 C (89.1 F)	-23.3 C (-9.9 F)	n/a	n/a
Mar	31.7 C (89.1 F)	-14.4 C (6.1 F)	n/a	n/a
Apr	35.6 C (96.1 F)	-7.2 C (19.0 F)	n/a	n/a
May	39.4 C (102.9 F)	-3.3 C (26.1 F)	n/a	n/a
Jun	42.8 C (109.0 F)	4.4 C (39.9 F)	n/a	n/a
Jul	42.2 C (108.0 F)	8.9 C (48.0 F)	n/a	n/a
Aug	38.9 C (102.0 F)	9.4 C (48.9 F)	n/a	n/a
Sep	37.2 C (99.0 F)	1.7 C (35.1 F)	n/a	n/a
Oct	34.4 C (93.9 F)	-7.2 C (19.0 F)	n/a	n/a
Nov	31.7 C (89.1 F)	-13.9 C (7.0 F)	n/a	n/a
Dec	31.1 C (88.0 F)	-17.2 C (1.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Sierra Blanca 2 E still stand. 1895 holds the most, with 121.

Standing records at Sierra Blanca 2 E by the year they were set
Year set	Standing records
1893	36
1894	48
1895	121
1896	91
1897	16
1962	14
1963	26
1964	30
1965	34
1966	33
1967	33
1968	20
1969	40
1970	42
1971	39
1972	31
1973	34
1974	22
1975	48
1976	37
1977	16
1978	15
1979	29
1980	36
1981	33
1982	18
1983	23
1984	27
1985	20
1986	26
1987	4
1988	12
1989	51
1990	34
1991	29
1992	30
1993	17
1994	37
1995	22
1996	41
1997	35
1998	34
1999	25
2000	26
2001	8
2002	21

All-Time Record Progression

1 new records

1 all-time records were set at Sierra Blanca 2 E between 27 June 1994 and 27 June 1994. Each dot is a new record.

Wettest Day of Each Month

Sep: 84.3 mm (3.3 in)

The wettest day on record for each calendar month at Sierra Blanca 2 E. The most was 84.3 mm (3.3 in) on 25 September 1978.

Record daily precipitation for each month at Sierra Blanca 2 E
Month	Record daily precipitation (mm)	Date
Jan	17.3 mm (0.7 in)	8 January 1984
Feb	19.6 mm (0.8 in)	16 February 1989
Mar	19.1 mm (0.8 in)	13 March 1985
Apr	31.0 mm (1.2 in)	29 April 1993
May	40.6 mm (1.6 in)	12 May 1893
Jun	67.8 mm (2.7 in)	22 June 1970
Jul	51.6 mm (2.0 in)	5 July 1988
Aug	50.8 mm (2.0 in)	26 August 1974
Sep	84.3 mm (3.3 in)	25 September 1978
Oct	54.6 mm (2.1 in)	10 October 1986
Nov	33.3 mm (1.3 in)	26 November 1968
Dec	45.0 mm (1.8 in)	21 December 1991

Period of Record Coverage

1893 to 2002

46 years of record at Sierra Blanca 2 E, 1893 to 2002. 15 years have data for under 90 percent of days and are left out of rankings: 1894, 1897, 1962, 1977, 1978, 1979, 1982, 1984 and others.

Days with data per year at Sierra Blanca 2 E
Year	Days with data	Share of year	Complete
1893	333	91%	Yes
1894	196	54%	No
1895	364	100%	Yes
1896	366	100%	Yes
1897	90	25%	No
1962	153	42%	No
1963	363	99%	Yes
1964	364	99%	Yes
1965	363	99%	Yes
1966	363	99%	Yes
1967	360	99%	Yes
1968	364	99%	Yes
1969	360	99%	Yes
1970	360	99%	Yes
1971	360	99%	Yes
1972	356	97%	Yes
1973	356	98%	Yes
1974	348	95%	Yes
1975	344	94%	Yes
1976	353	96%	Yes
1977	294	81%	No
1978	273	75%	No
1979	297	81%	No
1980	361	99%	Yes
1981	360	99%	Yes
1982	320	88%	No
1983	335	92%	Yes
1984	327	89%	No
1985	336	92%	Yes
1986	353	97%	Yes
1987	18	5%	No
1988	242	66%	No
1989	315	86%	No
1990	325	89%	No
1991	321	88%	No
1992	339	93%	Yes
1993	361	99%	Yes
1994	360	99%	Yes
1995	351	96%	Yes
1996	333	91%	Yes
1997	351	96%	Yes
1998	349	96%	Yes
1999	336	92%	Yes
2000	330	90%	Yes
2001	186	51%	No
2002	250	68%	No

Latest Records

Latest records at Sierra Blanca 2 E
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 September 2002	Sierra Blanca 2 E, US	daily low max (Tie)	21.1 C (70.0 F)	tie	105 years	10 of 100 (Routine)
29 August 2002	Sierra Blanca 2 E, US	daily high min	20.0 C (68.0 F)	0.6 C (1.1 F)	105 years	42 of 100 (Notable)
28 August 2002	Sierra Blanca 2 E, US	daily high min	21.1 C (70.0 F)	1.7 C (3.1 F)	107 years	47 of 100 (Notable)
27 August 2002	Sierra Blanca 2 E, US	daily high min	20.0 C (68.0 F)	0.6 C (1.1 F)	20 years	18 of 100 (Routine)
27 August 2002	Sierra Blanca 2 E, US	daily high max (Tie)	35.6 C (96.1 F)	tie	36 years	5 of 100 (Routine)
3 August 2002	Sierra Blanca 2 E, US	daily low max	26.7 C (80.1 F)	2.2 C (4.0 F)	3 years	17 of 100 (Routine)
21 July 2002	Sierra Blanca 2 E, US	daily low max	25.0 C (77.0 F)	2.8 C (5.0 F)	108 years	49 of 100 (Notable)
8 July 2002	Sierra Blanca 2 E, US	daily low max	26.7 C (80.1 F)	2.2 C (4.0 F)	37 years	28 of 100 (Routine)
6 June 2002	Sierra Blanca 2 E, US	daily low max	27.8 C (82.0 F)	0.5 C (0.9 F)	29 years	19 of 100 (Routine)
3 June 2002	Sierra Blanca 2 E, US	daily high min (Tie)	20.6 C (69.1 F)	tie	105 years	10 of 100 (Routine)
6 May 2002	Sierra Blanca 2 E, US	daily high min	18.9 C (66.0 F)	1.7 C (3.1 F)	106 years	44 of 100 (Notable)
30 April 2002	Sierra Blanca 2 E, US	daily high max	32.8 C (91.0 F)	1.1 C (2.0 F)	28 years	20 of 100 (Routine)
25 April 2002	Sierra Blanca 2 E, US	daily high max	33.9 C (93.0 F)	0.6 C (1.1 F)	5 years	12 of 100 (Routine)
4 March 2002	Sierra Blanca 2 E, US	daily low max	6.7 C (44.1 F)	0.5 C (0.9 F)	36 years	22 of 100 (Routine)
3 March 2002	Sierra Blanca 2 E, US	monthly low max	0.6 C (33.1 F)	1.6 C (2.9 F)	36 years	34 of 100 (Routine)
27 February 2002	Sierra Blanca 2 E, US	daily low max	0.0 C (32.0 F)	11.1 C (20.0 F)	18 years	38 of 100 (Notable)
27 February 2002	Sierra Blanca 2 E, US	daily low min (Tie)	-10.6 C (12.9 F)	tie	18 years	3 of 100 (Routine)
26 February 2002	Sierra Blanca 2 E, US	daily low min	-8.3 C (17.1 F)	1.6 C (2.9 F)	36 years	24 of 100 (Routine)
11 February 2002	Sierra Blanca 2 E, US	daily low max	5.6 C (42.1 F)	2.7 C (4.9 F)	36 years	26 of 100 (Routine)
6 February 2002	Sierra Blanca 2 E, US	daily low max	3.3 C (37.9 F)	4.5 C (8.1 F)	23 years	25 of 100 (Routine)

Climate Trend

33 complete years, 1895 to 2000

One stripe for each of 33 complete years at Sierra Blanca 2 E, 1895 to 2000. Blue stripes are years cooler than the station's own mean of 16.0 C (60.8 F); red stripes are warmer. The coolest year was 2000, at 14.7 C (58.5 F), and the warmest was 1895, at 17.6 C (63.7 F). The strongest colour marks a difference of 1.7 C (3.1 F).

Annual mean temperature at Sierra Blanca 2 E as warming stripes, 1895 to 2000
Year	Annual mean temperature	Difference from the station mean
1895	17.6 C	+1.61 C
1896	17.4 C	+1.44 C
1963	16.2 C	+0.26 C
1964	15.6 C	-0.36 C
1965	16.3 C	+0.27 C
1966	15.7 C	-0.24 C
1967	16.2 C	+0.18 C
1968	15.6 C	-0.34 C
1969	16.3 C	+0.32 C
1970	15.4 C	-0.55 C
1971	16.1 C	+0.15 C
1972	16.5 C	+0.51 C
1973	15.6 C	-0.41 C
1974	16.1 C	+0.15 C
1975	15.2 C	-0.82 C
1976	15.4 C	-0.63 C
1980	16.3 C	+0.29 C
1981	16.5 C	+0.47 C
1982	16.3 C	+0.35 C
1983	16.0 C	+0.00 C
1984	15.7 C	-0.32 C
1985	15.8 C	-0.19 C
1986	16.1 C	+0.08 C
1990	15.5 C	-0.46 C
1991	15.1 C	-0.93 C
1993	15.6 C	-0.42 C
1994	16.4 C	+0.43 C
1995	16.2 C	+0.23 C
1996	16.4 C	+0.39 C
1997	15.7 C	-0.28 C
1998	16.3 C	+0.33 C
1999	15.6 C	-0.37 C
2000	14.7 C	-1.26 C

The annual mean temperature here has fallen by 0.2 C (0.1 to 0.2) per decade over 1895 to 2000. In Fahrenheit: 0.3 F (0.2 to 0.4) per decade. The slope is a straight line fitted to 33 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Sierra Blanca 2 E
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	-0.2 C (-0.2 to -0.1) per decade	-0.3 F (-0.4 to -0.2) per decade	1895 to 2000	33	Fall
Mean daily maximum	0.07 C (-0.02 to 0.16) per decade	0.12 F (-0.04 to 0.29) per decade	1895 to 2000	33	Not clearly different from zero
Mean daily minimum	-0.4 C (-0.5 to -0.3) per decade	-0.7 F (-0.9 to -0.5) per decade	1895 to 2000	33	Fall

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

1893 to 2002

Yearly extremes at Sierra Blanca 2 E: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	42.8 C (109.0 F)	1994	38.9 C (102.0 F)	46
Coldest night (TNn)	-23.3 C (-9.9 F)	1985	-12.2 C (10.0 F)	46
Wettest day (Rx1day)	84.3 mm (3.3 in)	1978	32.3 mm (1.3 in)	48
Wettest five days (Rx5day)	226.8 mm (8.9 in)	1978	45.2 mm (1.8 in)	47
Longest dry spell (CDD)	182 days	1971	60 days	47

Hottest day (TXx)

The hottest day of the year at Sierra Blanca 2 E, 1893 to 2002. The record is 42.8 C (109.0 F) in 1994, marked on the chart; the median year is 38.9 C (102.0 F).

Hottest day (TXx) at Sierra Blanca 2 E by year
Year	Hottest day (TXx)
1893	39.4 C (102.9 F)
1894	38.9 C (102.0 F)
1895	37.8 C (100.0 F)
1896	40.0 C (104.0 F)
1897	26.7 C (80.1 F)
1948	n/a
1950	n/a
1951	n/a
1962	38.3 C (100.9 F)
1963	38.9 C (102.0 F)
1964	38.9 C (102.0 F)
1965	36.7 C (98.1 F)
1966	37.2 C (99.0 F)
1967	36.7 C (98.1 F)
1968	37.8 C (100.0 F)
1969	38.9 C (102.0 F)
1970	38.9 C (102.0 F)
1971	37.8 C (100.0 F)
1972	38.3 C (100.9 F)
1973	40.0 C (104.0 F)
1974	38.3 C (100.9 F)
1975	36.7 C (98.1 F)
1976	38.9 C (102.0 F)
1977	40.0 C (104.0 F)
1978	40.0 C (104.0 F)
1979	35.6 C (96.1 F)
1980	40.6 C (105.1 F)
1981	41.7 C (107.1 F)
1982	39.4 C (102.9 F)
1983	38.9 C (102.0 F)
1984	37.2 C (99.0 F)
1985	38.9 C (102.0 F)
1986	37.8 C (100.0 F)
1987	22.2 C (72.0 F)
1988	37.2 C (99.0 F)
1989	41.1 C (106.0 F)
1990	41.7 C (107.1 F)
1991	38.3 C (100.9 F)
1992	39.4 C (102.9 F)
1993	38.9 C (102.0 F)
1994	42.8 C (109.0 F)
1995	40.6 C (105.1 F)
1996	40.6 C (105.1 F)
1997	40.6 C (105.1 F)
1998	42.2 C (108.0 F)
1999	40.6 C (105.1 F)
2000	37.2 C (99.0 F)
2001	36.1 C (97.0 F)
2002	37.2 C (99.0 F)

Coldest night (TNn)

The coldest night of the year at Sierra Blanca 2 E, 1893 to 2002. The record is -23.3 C (-9.9 F) in 1985, marked on the chart; the median year is -12.2 C (10.0 F).

Coldest night (TNn) at Sierra Blanca 2 E by year
Year	Coldest night (TNn)
1893	-10.0 C (14.0 F)
1894	-6.7 C (19.9 F)
1895	-13.3 C (8.1 F)
1896	-13.9 C (7.0 F)
1897	-12.8 C (9.0 F)
1948	n/a
1950	n/a
1951	n/a
1962	-7.2 C (19.0 F)
1963	-14.4 C (6.1 F)
1964	-15.6 C (3.9 F)
1965	-14.4 C (6.1 F)
1966	-12.2 C (10.0 F)
1967	-15.0 C (5.0 F)
1968	-8.3 C (17.1 F)
1969	-12.2 C (10.0 F)
1970	-14.4 C (6.1 F)
1971	-14.4 C (6.1 F)
1972	-12.2 C (10.0 F)
1973	-16.7 C (1.9 F)
1974	-11.7 C (10.9 F)
1975	-11.1 C (12.0 F)
1976	-12.8 C (9.0 F)
1977	-9.4 C (15.1 F)
1978	-11.7 C (10.9 F)
1979	-12.2 C (10.0 F)
1980	-11.1 C (12.0 F)
1981	-11.7 C (10.9 F)
1982	-10.6 C (12.9 F)
1983	-16.7 C (1.9 F)
1984	-14.4 C (6.1 F)
1985	-23.3 C (-9.9 F)
1986	-11.1 C (12.0 F)
1987	-12.8 C (9.0 F)
1988	-15.6 C (3.9 F)
1989	-17.2 C (1.0 F)
1990	-13.3 C (8.1 F)
1991	-9.4 C (15.1 F)
1992	-11.1 C (12.0 F)
1993	-10.0 C (14.0 F)
1994	-13.3 C (8.1 F)
1995	-10.0 C (14.0 F)
1996	-16.1 C (3.0 F)
1997	-12.8 C (9.0 F)
1998	-11.7 C (10.9 F)
1999	-11.7 C (10.9 F)
2000	-11.7 C (10.9 F)
2001	-12.2 C (10.0 F)
2002	-13.9 C (7.0 F)

Wettest day (Rx1day)

The wettest day of the year at Sierra Blanca 2 E, 1893 to 2002. The record is 84.3 mm (3.3 in) in 1978, marked on the chart; the median year is 32.3 mm (1.3 in).

Wettest day (Rx1day) at Sierra Blanca 2 E by year
Year	Wettest day (Rx1day)
1893	40.6 mm (1.6 in)
1894	32.5 mm (1.3 in)
1895	30.5 mm (1.2 in)
1896	34.3 mm (1.4 in)
1897	0.0 mm (0.00 in)
1948	24.4 mm (1.0 in)
1950	28.2 mm (1.1 in)
1951	19.1 mm (0.8 in)
1962	20.3 mm (0.8 in)
1963	27.7 mm (1.1 in)
1964	24.9 mm (1.0 in)
1965	17.3 mm (0.7 in)
1966	52.8 mm (2.1 in)
1967	31.0 mm (1.2 in)
1968	34.8 mm (1.4 in)
1969	46.2 mm (1.8 in)
1970	67.8 mm (2.7 in)
1971	31.2 mm (1.2 in)
1972	32.0 mm (1.3 in)
1973	33.3 mm (1.3 in)
1974	63.5 mm (2.5 in)
1975	30.5 mm (1.2 in)
1976	34.8 mm (1.4 in)
1977	17.0 mm (0.7 in)
1978	84.3 mm (3.3 in)
1979	19.8 mm (0.8 in)
1980	34.3 mm (1.4 in)
1981	38.1 mm (1.5 in)
1982	34.8 mm (1.4 in)
1983	30.5 mm (1.2 in)
1984	49.5 mm (1.9 in)
1985	40.6 mm (1.6 in)
1986	54.6 mm (2.1 in)
1987	n/a
1988	51.6 mm (2.0 in)
1989	50.8 mm (2.0 in)
1990	47.5 mm (1.9 in)
1991	45.0 mm (1.8 in)
1992	25.1 mm (1.0 in)
1993	38.6 mm (1.5 in)
1994	11.9 mm (0.5 in)
1995	39.1 mm (1.5 in)
1996	18.0 mm (0.7 in)
1997	17.8 mm (0.7 in)
1998	13.5 mm (0.5 in)
1999	37.3 mm (1.5 in)
2000	21.1 mm (0.8 in)
2001	14.7 mm (0.6 in)
2002	16.0 mm (0.6 in)

Wettest five days (Rx5day)

The wettest five days of the year at Sierra Blanca 2 E, 1893 to 2002. The record is 226.8 mm (8.9 in) in 1978, marked on the chart; the median year is 45.2 mm (1.8 in).

Wettest five days (Rx5day) at Sierra Blanca 2 E by year
Year	Wettest five days (Rx5day)
1893	0.0 mm (0.00 in)
1894	n/a
1895	30.5 mm (1.2 in)
1896	2.5 mm (0.10 in)
1897	0.0 mm (0.00 in)
1948	24.4 mm (1.0 in)
1950	29.7 mm (1.2 in)
1951	19.1 mm (0.8 in)
1962	29.2 mm (1.1 in)
1963	45.2 mm (1.8 in)
1964	25.4 mm (1.0 in)
1965	21.1 mm (0.8 in)
1966	77.6 mm (3.1 in)
1967	40.9 mm (1.6 in)
1968	90.7 mm (3.6 in)
1969	87.1 mm (3.4 in)
1970	71.6 mm (2.8 in)
1971	50.2 mm (2.0 in)
1972	54.9 mm (2.2 in)
1973	71.2 mm (2.8 in)
1974	146.3 mm (5.8 in)
1975	38.6 mm (1.5 in)
1976	55.7 mm (2.2 in)
1977	32.3 mm (1.3 in)
1978	226.8 mm (8.9 in)
1979	57.7 mm (2.3 in)
1980	73.3 mm (2.9 in)
1981	43.9 mm (1.7 in)
1982	41.2 mm (1.6 in)
1983	50.6 mm (2.0 in)
1984	92.4 mm (3.6 in)
1985	91.4 mm (3.6 in)
1986	58.0 mm (2.3 in)
1987	n/a
1988	73.5 mm (2.9 in)
1989	50.8 mm (2.0 in)
1990	51.8 mm (2.0 in)
1991	64.3 mm (2.5 in)
1992	32.2 mm (1.3 in)
1993	55.1 mm (2.2 in)
1994	18.0 mm (0.7 in)
1995	69.3 mm (2.7 in)
1996	23.0 mm (0.9 in)
1997	31.8 mm (1.3 in)
1998	27.0 mm (1.1 in)
1999	53.1 mm (2.1 in)
2000	43.4 mm (1.7 in)
2001	22.3 mm (0.9 in)
2002	34.8 mm (1.4 in)

Longest dry spell (CDD)

The longest dry spell of the year at Sierra Blanca 2 E, 1893 to 2002. The record is 182 days in 1971, marked on the chart; the median year is 60 days.

Longest dry spell (CDD) at Sierra Blanca 2 E by year
Year	Longest dry spell (CDD)
1893	30 days
1894	n/a
1895	25 days
1896	32 days
1897	90 days
1948	9 days
1950	91 days
1951	54 days
1962	24 days
1963	50 days
1964	77 days
1965	73 days
1966	85 days
1967	77 days
1968	32 days
1969	72 days
1970	76 days
1971	182 days
1972	84 days
1973	123 days
1974	91 days
1975	101 days
1976	60 days
1977	65 days
1978	26 days
1979	75 days
1980	54 days
1981	71 days
1982	45 days
1983	46 days
1984	48 days
1985	37 days
1986	45 days
1987	n/a
1988	43 days
1989	79 days
1990	32 days
1991	65 days
1992	53 days
1993	43 days
1994	40 days
1995	73 days
1996	60 days
1997	47 days
1998	72 days
1999	67 days
2000	52 days
2001	58 days
2002	121 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

33 years with a frost

Across 33 years with a frost, the median last spring frost at Sierra Blanca 2 E falls on 16 April and the median first autumn frost on 29 October, which leaves a median of 194 days between them.

Fitted over all years, the growing season changes by -3.7 days per decade at this station.

Frost dates and growing season at Sierra Blanca 2 E
Measure	Median, all years	Earliest period	Recent period (1964 to 2000)	Recent against earliest	Fitted trend
Last spring frost	16 April	n/a	16 April	n/a	+0.9 days per decade
First autumn frost	29 October	n/a	28 October	n/a	-2.8 days per decade
Growing days	194 days	n/a	193 days	n/a	-3.7 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

31 years, 1963 to 2000

A day with at least 35.0 mm (1.4 in) of rain is expected about once in 2 years. A day with at least 72.4 mm (2.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Sierra Blanca 2 E: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	35.0 mm (1.4 in)
5 years	47.5 mm (1.9 in)
10 years	54.6 mm (2.1 in)
25 years	62.5 mm (2.5 in)
50 years	67.7 mm (2.7 in)	Longer than the 31 years of record
100 years	72.4 mm (2.9 in)	Longer than the 31 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, 31 years of values from 1963 to 2000.

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: 67.8 mm (2.7 in) in 1970; 63.5 mm (2.5 in) in 1974; 54.6 mm (2.1 in) in 1986.

Download the Data

Data for Sierra Blanca 2 E standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Sierra Blanca 2 E 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).