Record envelope, standing records and threshold days for Red Rock (USC00417497), Texas, United States, with 36 years of record.
Key Facts for Red Rock
Red Rock (USC00417497) is a weather station in Texas, United States at 29.97 latitude and -97.45 longitude, 159 m (520 ft) above sea level.
The station reports from 1965 to 2000, 36 years of record.
1,464 records set at Red Rock still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Red Rock set a daily record low maximum temperature of 0.0 C (32.0 F) on 13 December 2000.
About the Station
Location: Texas, United States, 29.97 latitude, -97.45 longitude.
Elevation: 159 m (520 ft).
Period of record: 1965 to 2000, 36 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 Red Rock. 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 Red Rock, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
31.1 C (88.0 F)
-13.3 C (8.1 F)
n/a
n/a
Feb
37.8 C (100.0 F)
-12.8 C (9.0 F)
n/a
n/a
Mar
36.1 C (97.0 F)
-11.1 C (12.0 F)
n/a
n/a
Apr
36.1 C (97.0 F)
-5.6 C (21.9 F)
n/a
n/a
May
38.9 C (102.0 F)
1.1 C (34.0 F)
n/a
n/a
Jun
42.8 C (109.0 F)
10.0 C (50.0 F)
n/a
n/a
Jul
41.1 C (106.0 F)
12.8 C (55.0 F)
n/a
n/a
Aug
41.7 C (107.1 F)
10.0 C (50.0 F)
n/a
n/a
Sep
43.3 C (109.9 F)
2.2 C (36.0 F)
n/a
n/a
Oct
37.2 C (99.0 F)
-7.2 C (19.0 F)
n/a
n/a
Nov
33.3 C (91.9 F)
-12.2 C (10.0 F)
n/a
n/a
Dec
31.1 C (88.0 F)
-19.4 C (-2.9 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Red Rock still stand. 1989 holds the most, with 79.
Standing records at Red Rock by the year they were set
Year set
Standing records
1965
18
1966
31
1967
63
1968
36
1969
38
1970
63
1971
42
1972
48
1973
40
1974
67
1975
28
1976
56
1977
40
1978
36
1979
21
1980
37
1981
28
1982
43
1983
36
1984
38
1985
44
1986
27
1987
33
1988
54
1989
79
1990
53
1991
35
1992
34
1993
23
1994
37
1996
49
1997
31
1998
64
1999
36
2000
56
All-Time Record Progression
4 new records
4 all-time records were set at Red Rock between 14 June 1998 and 6 September 2000. Each dot is a new record.
When Red Rock set new all-time records
Date
Kind
Detail
1998-06-14
Record high maximum temperature
Record high maximum temperature 42.8 C (109.0 F)
1998-06-18
Record high minimum temperature
Record high minimum temperature 26.7 C (80.1 F)
1998-10-18
Record daily precipitation
Record daily precipitation 204.7 mm (8.1 in)
2000-09-06
Record high maximum temperature
Record high maximum temperature 43.3 C (109.9 F)
Wettest Day of Each Month
Oct: 204.7 mm (8.1 in)
The wettest day on record for each calendar month at Red Rock. The most was 204.7 mm (8.1 in) on 18 October 1998.
Record daily precipitation for each month at Red Rock
Month
Record daily precipitation (mm)
Date
Jan
56.6 mm (2.2 in)
18 January 1991
Feb
71.9 mm (2.8 in)
4 February 1991
Mar
63.5 mm (2.5 in)
24 March 1973
Apr
104.1 mm (4.1 in)
5 April 1976
May
149.9 mm (5.9 in)
24 May 1975
Jun
173.0 mm (6.8 in)
13 June 1987
Jul
69.3 mm (2.7 in)
17 July 1983
Aug
77.5 mm (3.1 in)
31 August 1981
Sep
115.6 mm (4.6 in)
21 September 1967
Oct
204.7 mm (8.1 in)
18 October 1998
Nov
110.2 mm (4.3 in)
23 November 1985
Dec
108.0 mm (4.3 in)
21 December 1991
Period of Record Coverage
1965 to 2000
Complete yearUnder 90 percent of days
35 years of record at Red Rock, 1965 to 2000. 5 years have data for under 90 percent of days and are left out of rankings: 1965, 1979, 1996, 1999, 2000.
Cooler than the station meanWarmer than the station mean
One stripe for each of 29 complete years at Red Rock, 1966 to 1998. Blue stripes are years cooler than the station's own mean of 19.4 C (66.8 F); red stripes are warmer. The coolest year was 1993, at 18.3 C (64.9 F), and the warmest was 1998, at 21.1 C (69.9 F). The strongest colour marks a difference of 1.8 C (3.2 F).
Annual mean temperature at Red Rock as warming stripes, 1966 to 1998
Year
Annual mean temperature
Difference from the station mean
1966
19.0 C
-0.35 C
1967
20.1 C
+0.79 C
1969
19.5 C
+0.16 C
1970
19.1 C
-0.27 C
1971
20.4 C
+1.04 C
1972
19.6 C
+0.24 C
1973
19.5 C
+0.15 C
1974
19.6 C
+0.22 C
1975
19.6 C
+0.26 C
1976
18.9 C
-0.50 C
1977
20.3 C
+0.92 C
1978
19.3 C
-0.04 C
1980
19.9 C
+0.50 C
1981
19.6 C
+0.25 C
1982
19.2 C
-0.18 C
1983
18.4 C
-0.96 C
1984
20.1 C
+0.73 C
1985
19.2 C
-0.18 C
1986
19.6 C
+0.21 C
1987
18.5 C
-0.84 C
1988
18.9 C
-0.46 C
1989
18.6 C
-0.79 C
1990
19.7 C
+0.34 C
1991
18.7 C
-0.65 C
1992
18.5 C
-0.89 C
1993
18.3 C
-1.07 C
1994
19.2 C
-0.19 C
1997
19.3 C
-0.01 C
1998
21.1 C
+1.71 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
1965 to 2000
Yearly extremes at Red Rock: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
43.3 C (109.9 F)
2000
38.9 C (102.0 F)
35
Coldest night (TNn)
-19.4 C (-2.9 F)
1989
-10.0 C (14.0 F)
35
Wettest day (Rx1day)
204.7 mm (8.1 in)
1998
84.1 mm (3.3 in)
35
Wettest five days (Rx5day)
455.2 mm (17.9 in)
1998
119.7 mm (4.7 in)
35
Longest dry spell (CDD)
74 days
1993
36 days
35
Hottest day (TXx)
The hottest day of the year at Red Rock, 1965 to 2000. The record is 43.3 C (109.9 F) in 2000, marked on the chart; the median year is 38.9 C (102.0 F).
Hottest day (TXx) at Red Rock by year
Year
Hottest day (TXx)
1965
37.8 C (100.0 F)
1966
38.3 C (100.9 F)
1967
39.4 C (102.9 F)
1968
36.7 C (98.1 F)
1969
41.7 C (107.1 F)
1970
38.9 C (102.0 F)
1971
38.3 C (100.9 F)
1972
37.8 C (100.0 F)
1973
37.8 C (100.0 F)
1974
38.9 C (102.0 F)
1975
37.8 C (100.0 F)
1976
38.9 C (102.0 F)
1977
38.9 C (102.0 F)
1978
41.1 C (106.0 F)
1979
36.1 C (97.0 F)
1980
40.6 C (105.1 F)
1981
38.3 C (100.9 F)
1982
40.0 C (104.0 F)
1983
39.4 C (102.9 F)
1984
41.7 C (107.1 F)
1985
41.1 C (106.0 F)
1986
41.1 C (106.0 F)
1987
38.3 C (100.9 F)
1988
41.1 C (106.0 F)
1989
40.6 C (105.1 F)
1990
41.7 C (107.1 F)
1991
37.8 C (100.0 F)
1992
38.3 C (100.9 F)
1993
38.3 C (100.9 F)
1994
39.4 C (102.9 F)
1996
40.0 C (104.0 F)
1997
38.9 C (102.0 F)
1998
42.8 C (109.0 F)
1999
41.1 C (106.0 F)
2000
43.3 C (109.9 F)
Coldest night (TNn)
The coldest night of the year at Red Rock, 1965 to 2000. The record is -19.4 C (-2.9 F) in 1989, marked on the chart; the median year is -10.0 C (14.0 F).
Coldest night (TNn) at Red Rock by year
Year
Coldest night (TNn)
1965
-1.7 C (28.9 F)
1966
-10.0 C (14.0 F)
1967
-7.8 C (18.0 F)
1968
-6.7 C (19.9 F)
1969
-8.3 C (17.1 F)
1970
-11.7 C (10.9 F)
1971
-6.1 C (21.0 F)
1972
-8.9 C (16.0 F)
1973
-12.2 C (10.0 F)
1974
-7.8 C (18.0 F)
1975
-10.0 C (14.0 F)
1976
-9.4 C (15.1 F)
1977
-10.0 C (14.0 F)
1978
-10.0 C (14.0 F)
1979
-6.7 C (19.9 F)
1980
-7.8 C (18.0 F)
1981
-8.3 C (17.1 F)
1982
-13.3 C (8.1 F)
1983
-13.3 C (8.1 F)
1984
-11.1 C (12.0 F)
1985
-11.7 C (10.9 F)
1986
-6.7 C (19.9 F)
1987
-7.8 C (18.0 F)
1988
-10.0 C (14.0 F)
1989
-19.4 C (-2.9 F)
1990
-13.3 C (8.1 F)
1991
-7.8 C (18.0 F)
1992
-12.2 C (10.0 F)
1993
-11.1 C (12.0 F)
1994
-12.8 C (9.0 F)
1996
-10.0 C (14.0 F)
1997
-9.4 C (15.1 F)
1998
-8.3 C (17.1 F)
1999
-7.8 C (18.0 F)
2000
-10.0 C (14.0 F)
Wettest day (Rx1day)
The wettest day of the year at Red Rock, 1965 to 2000. The record is 204.7 mm (8.1 in) in 1998, marked on the chart; the median year is 84.1 mm (3.3 in).
Wettest day (Rx1day) at Red Rock by year
Year
Wettest day (Rx1day)
1965
100.1 mm (3.9 in)
1966
55.9 mm (2.2 in)
1967
115.6 mm (4.6 in)
1968
89.2 mm (3.5 in)
1969
69.9 mm (2.8 in)
1970
72.4 mm (2.9 in)
1971
63.5 mm (2.5 in)
1972
73.7 mm (2.9 in)
1973
101.6 mm (4.0 in)
1974
83.8 mm (3.3 in)
1975
149.9 mm (5.9 in)
1976
104.1 mm (4.1 in)
1977
95.3 mm (3.8 in)
1978
127.0 mm (5.0 in)
1979
86.4 mm (3.4 in)
1980
40.6 mm (1.6 in)
1981
77.5 mm (3.1 in)
1982
102.1 mm (4.0 in)
1983
101.6 mm (4.0 in)
1984
52.3 mm (2.1 in)
1985
110.2 mm (4.3 in)
1986
75.9 mm (3.0 in)
1987
173.0 mm (6.8 in)
1988
66.5 mm (2.6 in)
1989
43.7 mm (1.7 in)
1990
65.3 mm (2.6 in)
1991
108.0 mm (4.3 in)
1992
64.0 mm (2.5 in)
1993
87.6 mm (3.4 in)
1994
97.3 mm (3.8 in)
1996
59.7 mm (2.4 in)
1997
54.1 mm (2.1 in)
1998
204.7 mm (8.1 in)
1999
39.4 mm (1.6 in)
2000
84.1 mm (3.3 in)
Wettest five days (Rx5day)
The wettest five days of the year at Red Rock, 1965 to 2000. The record is 455.2 mm (17.9 in) in 1998, marked on the chart; the median year is 119.7 mm (4.7 in).
Wettest five days (Rx5day) at Red Rock by year
Year
Wettest five days (Rx5day)
1965
105.4 mm (4.1 in)
1966
86.9 mm (3.4 in)
1967
188.0 mm (7.4 in)
1968
135.1 mm (5.3 in)
1969
82.7 mm (3.3 in)
1970
99.1 mm (3.9 in)
1971
74.9 mm (2.9 in)
1972
99.1 mm (3.9 in)
1973
227.4 mm (9.0 in)
1974
125.7 mm (4.9 in)
1975
167.7 mm (6.6 in)
1976
137.2 mm (5.4 in)
1977
57.2 mm (2.3 in)
1978
133.4 mm (5.3 in)
1979
95.0 mm (3.7 in)
1980
76.3 mm (3.0 in)
1981
118.4 mm (4.7 in)
1982
121.2 mm (4.8 in)
1983
141.9 mm (5.6 in)
1984
99.5 mm (3.9 in)
1985
183.6 mm (7.2 in)
1986
87.1 mm (3.4 in)
1987
259.3 mm (10.2 in)
1988
67.0 mm (2.6 in)
1989
95.5 mm (3.8 in)
1990
119.7 mm (4.7 in)
1991
258.1 mm (10.2 in)
1992
116.4 mm (4.6 in)
1993
127.2 mm (5.0 in)
1994
158.1 mm (6.2 in)
1996
95.1 mm (3.7 in)
1997
137.2 mm (5.4 in)
1998
455.2 mm (17.9 in)
1999
78.3 mm (3.1 in)
2000
138.0 mm (5.4 in)
Longest dry spell (CDD)
The longest dry spell of the year at Red Rock, 1965 to 2000. The record is 74 days in 1993, marked on the chart; the median year is 36 days.
Longest dry spell (CDD) at Red Rock by year
Year
Longest dry spell (CDD)
1965
29 days
1966
38 days
1967
41 days
1968
48 days
1969
29 days
1970
56 days
1971
49 days
1972
51 days
1973
35 days
1974
49 days
1975
36 days
1976
23 days
1977
64 days
1978
45 days
1979
40 days
1980
50 days
1981
20 days
1982
25 days
1983
32 days
1984
38 days
1985
57 days
1986
26 days
1987
33 days
1988
28 days
1989
28 days
1990
24 days
1991
23 days
1992
24 days
1993
74 days
1994
45 days
1996
27 days
1997
37 days
1998
25 days
1999
59 days
2000
31 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
28 years with a frost
Across 28 years with a frost, the median last spring frost at Red Rock falls on 22 March and the median first autumn frost on 12 November, which leaves a median of 234 days between them.
Fitted over all years, the growing season changes by -0.3 days per decade at this station.
Frost dates and growing season at Red Rock
Measure
Median, all years
Earliest period
Recent period (1966 to 1998)
Recent against earliest
Fitted trend
Last spring frost
22 March
n/a
22 March
n/a
+1.5 days per decade
First autumn frost
12 November
n/a
12 November
n/a
+1.1 days per decade
Growing days
234 days
n/a
234 days
n/a
-0.3 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
32 years, 1966 to 2000
A day with at least 81.7 mm (3.2 in) of rain is expected about once in 2 years. A day with at least 215.7 mm (8.5 in) of rain is expected about once in 100 years.
Rainfall return levels at Red Rock: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
81.7 mm (3.2 in)
5 years
113.9 mm (4.5 in)
10 years
136.6 mm (5.4 in)
25 years
167.0 mm (6.6 in)
50 years
190.9 mm (7.5 in)
Longer than the 32 years of record
100 years
215.7 mm (8.5 in)
Longer than the 32 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, 32 years of values from 1966 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: 204.7 mm (8.1 in) in 1998; 173.0 mm (6.8 in) in 1987; 149.9 mm (5.9 in) in 1975.
Download the Data
Data for Red Rock standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Red Rock 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.