Record envelope, standing records and threshold days for Chapman Rch (USC00411651), Texas, United States, with 45 years of record.
Key Facts for Chapman Rch
Chapman Rch (USC00411651) is a weather station in Texas, United States at 27.59 latitude and -97.45 longitude, 8 m (25 ft) above sea level.
The station reports from 1959 to 2003, 45 years of record.
1,464 records set at Chapman Rch still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Chapman Rch set a daily record low minimum temperature of -4.4 C (24.1 F) on 27 February 2002.
About the Station
Location: Texas, United States, 27.59 latitude, -97.45 longitude.
Elevation: 8 m (25 ft).
Period of record: 1959 to 2003, 45 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 Chapman Rch. 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 Chapman Rch, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
32.8 C (91.0 F)
-11.1 C (12.0 F)
n/a
n/a
Feb
34.4 C (93.9 F)
-5.0 C (23.0 F)
n/a
n/a
Mar
38.9 C (102.0 F)
-3.9 C (25.0 F)
n/a
n/a
Apr
36.7 C (98.1 F)
1.1 C (34.0 F)
n/a
n/a
May
38.9 C (102.0 F)
8.9 C (48.0 F)
n/a
n/a
Jun
37.2 C (99.0 F)
15.0 C (59.0 F)
n/a
n/a
Jul
38.3 C (100.9 F)
17.8 C (64.0 F)
n/a
n/a
Aug
40.0 C (104.0 F)
15.6 C (60.1 F)
n/a
n/a
Sep
42.8 C (109.0 F)
10.6 C (51.1 F)
n/a
n/a
Oct
36.7 C (98.1 F)
-2.8 C (27.0 F)
n/a
n/a
Nov
35.6 C (96.1 F)
-2.8 C (27.0 F)
n/a
n/a
Dec
33.3 C (91.9 F)
-11.1 C (12.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Chapman Rch still stand. 1962 holds the most, with 70.
Standing records at Chapman Rch by the year they were set
Year set
Standing records
1959
31
1960
43
1961
41
1962
70
1963
36
1964
47
1965
35
1966
32
1967
32
1968
30
1969
39
1970
38
1971
36
1972
40
1973
51
1974
40
1975
35
1976
43
1977
23
1978
28
1979
43
1980
56
1981
29
1982
24
1983
38
1984
33
1985
28
1986
24
1987
22
1988
26
1989
62
1990
25
1991
22
1992
16
1993
16
1994
11
1995
29
1996
40
1997
31
1998
22
1999
18
2000
54
2001
21
2002
4
All-Time Record Progression
4 new records
4 all-time records were set at Chapman Rch between 23 December 1989 and 5 September 2000. Each dot is a new record.
When Chapman Rch set new all-time records
Date
Kind
Detail
1989-12-23
Record low maximum temperature
Record low maximum temperature -2.2 C (28.0 F)
1997-08-13
Record high minimum temperature
Record high minimum temperature 31.1 C (88.0 F)
2000-09-04
Record high maximum temperature
Record high maximum temperature 42.2 C (108.0 F)
2000-09-05
Record high maximum temperature
Record high maximum temperature 42.8 C (109.0 F)
Wettest Day of Each Month
Sep: 254.0 mm (10.0 in)
The wettest day on record for each calendar month at Chapman Rch. The most was 254.0 mm (10.0 in) on 20 September 1967.
Record daily precipitation for each month at Chapman Rch
Month
Record daily precipitation (mm)
Date
Jan
61.0 mm (2.4 in)
18 January 1992
Feb
79.0 mm (3.1 in)
21 February 1990
Mar
96.5 mm (3.8 in)
15 March 1994
Apr
133.6 mm (5.3 in)
29 April 1976
May
243.8 mm (9.6 in)
1 May 1975
Jun
90.2 mm (3.6 in)
20 June 1993
Jul
96.5 mm (3.8 in)
14 July 1983
Aug
127.0 mm (5.0 in)
22 August 1999
Sep
254.0 mm (10.0 in)
20 September 1967
Oct
251.5 mm (9.9 in)
12 October 1973
Nov
136.1 mm (5.4 in)
16 November 2001
Dec
100.6 mm (4.0 in)
29 December 1960
Period of Record Coverage
1959 to 2002
Complete yearUnder 90 percent of days
44 years of record at Chapman Rch, 1959 to 2002. 12 years have data for under 90 percent of days and are left out of rankings: 1959, 1982, 1983, 1984, 1991, 1993, 1994, 1995 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 33 complete years at Chapman Rch, 1960 to 2001. Blue stripes are years cooler than the station's own mean of 22.0 C (71.7 F); red stripes are warmer. The coolest year was 1966, at 21.1 C (69.9 F), and the warmest was 1981, at 22.9 C (73.1 F). The strongest colour marks a difference of 1.0 C (1.8 F).
Annual mean temperature at Chapman Rch as warming stripes, 1960 to 2001
Year
Annual mean temperature
Difference from the station mean
1960
21.6 C
-0.44 C
1961
21.8 C
-0.23 C
1962
22.8 C
+0.77 C
1963
22.3 C
+0.22 C
1964
22.3 C
+0.23 C
1965
22.3 C
+0.25 C
1966
21.1 C
-0.96 C
1967
22.0 C
-0.06 C
1968
21.5 C
-0.53 C
1969
22.2 C
+0.20 C
1970
21.5 C
-0.57 C
1971
22.7 C
+0.68 C
1972
22.4 C
+0.34 C
1973
21.9 C
-0.11 C
1974
22.2 C
+0.17 C
1975
22.2 C
+0.19 C
1976
21.2 C
-0.88 C
1977
22.1 C
+0.08 C
1978
21.7 C
-0.32 C
1979
21.7 C
-0.35 C
1980
22.4 C
+0.34 C
1981
22.9 C
+0.83 C
1982
22.1 C
+0.11 C
1983
21.3 C
-0.76 C
1984
22.0 C
-0.05 C
1985
21.8 C
-0.23 C
1986
22.4 C
+0.40 C
1988
21.8 C
-0.28 C
1989
21.9 C
-0.13 C
1990
22.6 C
+0.61 C
1996
22.3 C
+0.23 C
1997
21.7 C
-0.37 C
2001
22.8 C
+0.74 C
The fitted trend in annual mean temperature here over 1960 to 2001 is 0.1 C (-0.1 to 0.2) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.1 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 Chapman Rch
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.1 C (-0.1 to 0.2) per decade
0.1 F (-0.2 to 0.4) per decade
1960 to 2001
33
Not clearly different from zero
Mean daily maximum
0.1 C (-0.1 to 0.3) per decade
0.1 F (-0.2 to 0.5) per decade
1960 to 2001
33
Not clearly different from zero
Mean daily minimum
0.05 C (-0.11 to 0.21) per decade
0.1 F (-0.2 to 0.4) per decade
1960 to 2001
33
Not clearly different from zero
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
1959 to 2003
Yearly extremes at Chapman Rch: 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)
2000
36.4 C (97.5 F)
44
Coldest night (TNn)
-11.1 C (12.0 F)
1962
-3.9 C (25.0 F)
44
Wettest day (Rx1day)
254.0 mm (10.0 in)
1967
90.2 mm (3.6 in)
45
Wettest five days (Rx5day)
351.8 mm (13.9 in)
1967
124.7 mm (4.9 in)
45
Longest dry spell (CDD)
76 days
1998
44 days
45
Hottest day (TXx)
The hottest day of the year at Chapman Rch, 1959 to 2003. The record is 42.8 C (109.0 F) in 2000, marked on the chart; the median year is 36.4 C (97.5 F).
Hottest day (TXx) at Chapman Rch by year
Year
Hottest day (TXx)
1959
36.1 C (97.0 F)
1960
38.3 C (100.9 F)
1961
37.2 C (99.0 F)
1962
40.0 C (104.0 F)
1963
37.8 C (100.0 F)
1964
37.2 C (99.0 F)
1965
37.2 C (99.0 F)
1966
35.6 C (96.1 F)
1967
36.1 C (97.0 F)
1968
35.6 C (96.1 F)
1969
37.2 C (99.0 F)
1970
36.1 C (97.0 F)
1971
35.0 C (95.0 F)
1972
35.6 C (96.1 F)
1973
36.7 C (98.1 F)
1974
35.0 C (95.0 F)
1975
35.0 C (95.0 F)
1976
35.6 C (96.1 F)
1977
38.3 C (100.9 F)
1978
36.1 C (97.0 F)
1979
36.1 C (97.0 F)
1980
37.2 C (99.0 F)
1981
36.7 C (98.1 F)
1982
35.0 C (95.0 F)
1983
36.1 C (97.0 F)
1984
38.9 C (102.0 F)
1985
34.4 C (93.9 F)
1986
36.7 C (98.1 F)
1987
35.0 C (95.0 F)
1988
38.3 C (100.9 F)
1989
38.9 C (102.0 F)
1990
37.2 C (99.0 F)
1991
36.1 C (97.0 F)
1992
36.1 C (97.0 F)
1993
36.1 C (97.0 F)
1994
36.1 C (97.0 F)
1995
36.7 C (98.1 F)
1996
36.7 C (98.1 F)
1997
36.7 C (98.1 F)
1998
37.2 C (99.0 F)
1999
36.1 C (97.0 F)
2000
42.8 C (109.0 F)
2001
37.2 C (99.0 F)
2002
30.0 C (86.0 F)
2003
n/a
Coldest night (TNn)
The coldest night of the year at Chapman Rch, 1959 to 2003. The record is -11.1 C (12.0 F) in 1962, marked on the chart; the median year is -3.9 C (25.0 F).
Coldest night (TNn) at Chapman Rch by year
Year
Coldest night (TNn)
1959
-2.8 C (27.0 F)
1960
-3.9 C (25.0 F)
1961
-1.1 C (30.0 F)
1962
-11.1 C (12.0 F)
1963
-7.2 C (19.0 F)
1964
-3.9 C (25.0 F)
1965
-2.8 C (27.0 F)
1966
-3.9 C (25.0 F)
1967
-5.6 C (21.9 F)
1968
-2.8 C (27.0 F)
1969
-2.8 C (27.0 F)
1970
-3.9 C (25.0 F)
1971
-2.8 C (27.0 F)
1972
-1.7 C (28.9 F)
1973
-7.8 C (18.0 F)
1974
-2.2 C (28.0 F)
1975
-7.8 C (18.0 F)
1976
-3.9 C (25.0 F)
1977
-4.4 C (24.1 F)
1978
-6.7 C (19.9 F)
1979
-5.6 C (21.9 F)
1980
-3.9 C (25.0 F)
1981
-2.8 C (27.0 F)
1982
-7.2 C (19.0 F)
1983
-11.1 C (12.0 F)
1984
-4.4 C (24.1 F)
1985
-6.1 C (21.0 F)
1986
0.0 C (32.0 F)
1987
-0.6 C (30.9 F)
1988
-2.2 C (28.0 F)
1989
-11.1 C (12.0 F)
1990
-4.4 C (24.1 F)
1991
0.0 C (32.0 F)
1992
-1.1 C (30.0 F)
1993
-2.8 C (27.0 F)
1994
-3.3 C (26.1 F)
1995
2.8 C (37.0 F)
1996
-6.7 C (19.9 F)
1997
-2.2 C (28.0 F)
1998
-0.6 C (30.9 F)
1999
-0.6 C (30.9 F)
2000
-1.1 C (30.0 F)
2001
-3.9 C (25.0 F)
2002
-4.4 C (24.1 F)
2003
n/a
Wettest day (Rx1day)
The wettest day of the year at Chapman Rch, 1959 to 2003. The record is 254.0 mm (10.0 in) in 1967, marked on the chart; the median year is 90.2 mm (3.6 in).
Wettest day (Rx1day) at Chapman Rch by year
Year
Wettest day (Rx1day)
1959
87.6 mm (3.4 in)
1960
109.2 mm (4.3 in)
1961
127.5 mm (5.0 in)
1962
89.7 mm (3.5 in)
1963
55.6 mm (2.2 in)
1964
38.4 mm (1.5 in)
1965
57.9 mm (2.3 in)
1966
72.6 mm (2.9 in)
1967
254.0 mm (10.0 in)
1968
63.5 mm (2.5 in)
1969
51.1 mm (2.0 in)
1970
104.1 mm (4.1 in)
1971
90.9 mm (3.6 in)
1972
99.3 mm (3.9 in)
1973
251.5 mm (9.9 in)
1974
78.7 mm (3.1 in)
1975
243.8 mm (9.6 in)
1976
133.6 mm (5.3 in)
1977
102.6 mm (4.0 in)
1978
132.3 mm (5.2 in)
1979
78.0 mm (3.1 in)
1980
56.4 mm (2.2 in)
1981
109.2 mm (4.3 in)
1982
57.2 mm (2.3 in)
1983
96.5 mm (3.8 in)
1984
68.6 mm (2.7 in)
1985
118.6 mm (4.7 in)
1986
91.4 mm (3.6 in)
1987
57.2 mm (2.3 in)
1988
70.6 mm (2.8 in)
1989
41.4 mm (1.6 in)
1990
79.0 mm (3.1 in)
1991
147.3 mm (5.8 in)
1992
71.1 mm (2.8 in)
1993
90.2 mm (3.6 in)
1994
96.5 mm (3.8 in)
1995
101.6 mm (4.0 in)
1996
42.9 mm (1.7 in)
1997
106.7 mm (4.2 in)
1998
99.1 mm (3.9 in)
1999
127.0 mm (5.0 in)
2000
57.2 mm (2.3 in)
2001
136.1 mm (5.4 in)
2002
9.4 mm (0.37 in)
2003
0.0 mm (0.00 in)
Wettest five days (Rx5day)
The wettest five days of the year at Chapman Rch, 1959 to 2003. The record is 351.8 mm (13.9 in) in 1967, marked on the chart; the median year is 124.7 mm (4.9 in).
Wettest five days (Rx5day) at Chapman Rch by year
Year
Wettest five days (Rx5day)
1959
158.0 mm (6.2 in)
1960
216.6 mm (8.5 in)
1961
137.4 mm (5.4 in)
1962
100.9 mm (4.0 in)
1963
116.9 mm (4.6 in)
1964
66.1 mm (2.6 in)
1965
113.3 mm (4.5 in)
1966
182.1 mm (7.2 in)
1967
351.8 mm (13.9 in)
1968
88.3 mm (3.5 in)
1969
122.6 mm (4.8 in)
1970
104.1 mm (4.1 in)
1971
243.0 mm (9.6 in)
1972
124.7 mm (4.9 in)
1973
278.4 mm (11.0 in)
1974
95.3 mm (3.8 in)
1975
243.8 mm (9.6 in)
1976
135.6 mm (5.3 in)
1977
104.9 mm (4.1 in)
1978
166.8 mm (6.6 in)
1979
131.8 mm (5.2 in)
1980
93.7 mm (3.7 in)
1981
116.8 mm (4.6 in)
1982
64.8 mm (2.6 in)
1983
197.1 mm (7.8 in)
1984
69.4 mm (2.7 in)
1985
181.1 mm (7.1 in)
1986
132.1 mm (5.2 in)
1987
117.6 mm (4.6 in)
1988
74.4 mm (2.9 in)
1989
73.7 mm (2.9 in)
1990
84.6 mm (3.3 in)
1991
147.3 mm (5.8 in)
1992
108.4 mm (4.3 in)
1993
174.0 mm (6.9 in)
1994
131.1 mm (5.2 in)
1995
129.5 mm (5.1 in)
1996
93.5 mm (3.7 in)
1997
298.9 mm (11.8 in)
1998
191.0 mm (7.5 in)
1999
164.6 mm (6.5 in)
2000
91.5 mm (3.6 in)
2001
147.1 mm (5.8 in)
2002
14.7 mm (0.6 in)
2003
0.0 mm (0.00 in)
Longest dry spell (CDD)
The longest dry spell of the year at Chapman Rch, 1959 to 2003. The record is 76 days in 1998, marked on the chart; the median year is 44 days.
Longest dry spell (CDD) at Chapman Rch by year
Year
Longest dry spell (CDD)
1959
30 days
1960
22 days
1961
43 days
1962
48 days
1963
58 days
1964
46 days
1965
28 days
1966
40 days
1967
47 days
1968
21 days
1969
29 days
1970
42 days
1971
48 days
1972
41 days
1973
42 days
1974
45 days
1975
68 days
1976
46 days
1977
39 days
1978
42 days
1979
62 days
1980
57 days
1981
39 days
1982
43 days
1983
47 days
1984
49 days
1985
44 days
1986
55 days
1987
28 days
1988
31 days
1989
72 days
1990
46 days
1991
34 days
1992
43 days
1993
65 days
1994
45 days
1995
35 days
1996
49 days
1997
48 days
1998
76 days
1999
43 days
2000
49 days
2001
31 days
2002
27 days
2003
59 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
24 years with a frost
Across 24 years with a frost, the median last spring frost at Chapman Rch falls on 9 February and the median first autumn frost on 17 December, which leaves a median of 312 days between them.
Frost dates and growing season at Chapman Rch
Measure
Median, all years
Earliest period
Recent period (1960 to 1997)
Recent against earliest
Fitted trend
Last spring frost
9 February
n/a
9 February
n/a
n/a
First autumn frost
17 December
n/a
17 December
n/a
n/a
Growing days
312 days
n/a
312 days
n/a
n/a
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
40 years, 1960 to 2001
A day with at least 85.8 mm (3.4 in) of rain is expected about once in 2 years. A day with at least 300.8 mm (11.8 in) of rain is expected about once in 100 years.
Rainfall return levels at Chapman Rch: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
85.8 mm (3.4 in)
5 years
127.6 mm (5.0 in)
10 years
160.6 mm (6.3 in)
25 years
209.8 mm (8.3 in)
50 years
252.4 mm (9.9 in)
Longer than the 40 years of record
100 years
300.8 mm (11.8 in)
Longer than the 40 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, 40 years of values from 1960 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: 254.0 mm (10.0 in) in 1967; 251.5 mm (9.9 in) in 1973; 243.8 mm (9.6 in) in 1975.
Download the Data
Data for Chapman Rch standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Chapman Rch 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.