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
Record highRecord low2026 daily maximum2026 daily minimum
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
Year with most
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.
When Sierra Blanca 2 E set new all-time records
Date
Kind
Detail
1994-06-27
Record high maximum temperature
Record high maximum temperature 42.8 C (109.0 F)
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
Complete yearUnder 90 percent of days
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.
Cooler than the station meanWarmer than the station mean
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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.