Record envelope, standing records and threshold days for Karnack (USC00414693), Texas, United States, with 66 years of record.
Key Facts for Karnack
Karnack (USC00414693) is a weather station in Texas, United States at 32.67 latitude and -94.18 longitude, 78 m (255 ft) above sea level.
The station reports from 1942 to 2007, 66 years of record.
1,464 records set at Karnack still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Karnack set a daily record precipitation of 60.5 mm (2.4 in) on 15 January 2007.
About the Station
Location: Texas, United States, 32.67 latitude, -94.18 longitude.
Elevation: 78 m (255 ft).
Period of record: 1942 to 2007, 66 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 Karnack. 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 Karnack, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
30.6 C (87.1 F)
-17.8 C (0.0 F)
n/a
n/a
Feb
28.9 C (84.0 F)
-20.0 C (-4.0 F)
n/a
n/a
Mar
33.9 C (93.0 F)
-10.0 C (14.0 F)
n/a
n/a
Apr
34.4 C (93.9 F)
-1.1 C (30.0 F)
n/a
n/a
May
37.2 C (99.0 F)
5.0 C (41.0 F)
n/a
n/a
Jun
38.9 C (102.0 F)
9.4 C (48.9 F)
n/a
n/a
Jul
41.7 C (107.1 F)
11.7 C (53.1 F)
n/a
n/a
Aug
41.7 C (107.1 F)
10.6 C (51.1 F)
n/a
n/a
Sep
40.0 C (104.0 F)
2.8 C (37.0 F)
n/a
n/a
Oct
35.6 C (96.1 F)
-2.2 C (28.0 F)
n/a
n/a
Nov
30.6 C (87.1 F)
-7.8 C (18.0 F)
n/a
n/a
Dec
30.0 C (86.0 F)
-11.7 C (10.9 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Karnack still stand. 1963 holds the most, with 80.
Standing records at Karnack by the year they were set
Year set
Standing records
1942
29
1943
59
1944
34
1945
62
1946
66
1947
65
1948
53
1949
20
1950
56
1951
61
1952
53
1953
38
1954
57
1955
60
1956
41
1957
24
1958
28
1959
29
1960
41
1961
42
1962
39
1963
80
1964
44
1965
30
1966
32
1967
40
1968
24
1969
18
1970
30
1971
29
1972
42
1973
21
1974
44
1975
4
1979
1
1980
68
All-Time Record Progression
2 new records
2 all-time records were set at Karnack between 14 January 1982 and 31 October 1992. Each dot is a new record.
When Karnack set new all-time records
Date
Kind
Detail
1982-01-14
Record daily snowfall
Record daily snowfall 15.2 cm (6.0 in)
1992-10-31
Record daily precipitation
Record daily precipitation 203.7 mm (8.0 in)
Wettest Day of Each Month
Oct: 203.7 mm (8.0 in)
The wettest day on record for each calendar month at Karnack. The most was 203.7 mm (8.0 in) on 31 October 1992.
Record daily precipitation for each month at Karnack
Month
Record daily precipitation (mm)
Date
Jan
90.2 mm (3.6 in)
20 January 1979
Feb
79.5 mm (3.1 in)
8 February 1944
Mar
124.5 mm (4.9 in)
29 March 1989
Apr
108.0 mm (4.3 in)
26 April 1958
May
106.7 mm (4.2 in)
4 May 1967
Jun
119.9 mm (4.7 in)
26 June 1990
Jul
101.6 mm (4.0 in)
22 July 1998
Aug
88.6 mm (3.5 in)
11 August 1988
Sep
158.2 mm (6.2 in)
25 September 2005
Oct
203.7 mm (8.0 in)
31 October 1992
Nov
124.7 mm (4.9 in)
18 November 1969
Dec
105.9 mm (4.2 in)
15 December 1992
Period of Record Coverage
1942 to 1981
Complete yearUnder 90 percent of days
37 years of record at Karnack, 1942 to 1981. 6 years have data for under 90 percent of days and are left out of rankings: 1942, 1947, 1975, 1979, 1980, 1981.
Cooler than the station meanWarmer than the station mean
One stripe for each of 26 complete years at Karnack, 1943 to 1974. Blue stripes are years cooler than the station's own mean of 18.4 C (65.1 F); red stripes are warmer. The coolest year was 1946, at 16.6 C (61.8 F), and the warmest was 1956, at 19.6 C (67.3 F). The strongest colour marks a difference of 1.9 C (3.4 F).
Annual mean temperature at Karnack as warming stripes, 1943 to 1974
Year
Annual mean temperature
Difference from the station mean
1943
17.8 C
-0.56 C
1944
17.8 C
-0.61 C
1945
17.4 C
-0.96 C
1946
16.6 C
-1.83 C
1948
18.1 C
-0.32 C
1950
19.0 C
+0.65 C
1951
19.1 C
+0.68 C
1952
18.8 C
+0.40 C
1955
19.0 C
+0.60 C
1956
19.6 C
+1.23 C
1957
19.1 C
+0.66 C
1958
18.1 C
-0.28 C
1959
18.6 C
+0.18 C
1960
18.1 C
-0.33 C
1961
17.5 C
-0.85 C
1962
19.0 C
+0.63 C
1963
19.5 C
+1.08 C
1965
18.3 C
-0.08 C
1966
17.7 C
-0.70 C
1967
18.4 C
-0.04 C
1968
17.8 C
-0.64 C
1969
18.7 C
+0.27 C
1970
18.6 C
+0.22 C
1971
19.2 C
+0.80 C
1973
17.9 C
-0.50 C
1974
18.8 C
+0.42 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
1942 to 2007
Yearly extremes at Karnack: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
41.7 C (107.1 F)
1947
38.3 C (100.9 F)
37
Coldest night (TNn)
-20.0 C (-4.0 F)
1951
-8.9 C (16.0 F)
37
Wettest day (Rx1day)
203.7 mm (8.0 in)
1992
82.3 mm (3.2 in)
63
Wettest five days (Rx5day)
272.0 mm (10.7 in)
1992
132.4 mm (5.2 in)
63
Longest dry spell (CDD)
109 days
1951
25 days
63
Hottest day (TXx)
The hottest day of the year at Karnack, 1942 to 2007. The record is 41.7 C (107.1 F) in 1947, marked on the chart; the median year is 38.3 C (100.9 F).
Hottest day (TXx) at Karnack by year
Year
Hottest day (TXx)
1942
38.9 C (102.0 F)
1943
40.0 C (104.0 F)
1944
40.0 C (104.0 F)
1945
36.7 C (98.1 F)
1946
40.0 C (104.0 F)
1947
41.7 C (107.1 F)
1948
40.6 C (105.1 F)
1949
37.8 C (100.0 F)
1950
36.7 C (98.1 F)
1951
41.1 C (106.0 F)
1952
38.3 C (100.9 F)
1953
38.9 C (102.0 F)
1954
41.1 C (106.0 F)
1955
37.8 C (100.0 F)
1956
40.0 C (104.0 F)
1957
37.2 C (99.0 F)
1958
37.2 C (99.0 F)
1959
35.6 C (96.1 F)
1960
41.1 C (106.0 F)
1961
35.6 C (96.1 F)
1962
41.7 C (107.1 F)
1963
41.1 C (106.0 F)
1964
41.7 C (107.1 F)
1965
38.3 C (100.9 F)
1966
37.8 C (100.0 F)
1967
38.3 C (100.9 F)
1968
34.4 C (93.9 F)
1969
40.0 C (104.0 F)
1970
37.8 C (100.0 F)
1971
39.4 C (102.9 F)
1972
37.8 C (100.0 F)
1973
35.6 C (96.1 F)
1974
38.9 C (102.0 F)
1975
27.8 C (82.0 F)
1976
n/a
1977
n/a
1978
n/a
1979
28.3 C (82.9 F)
1980
41.7 C (107.1 F)
1981
22.2 C (72.0 F)
1982
n/a
1983
n/a
1984
n/a
1985
n/a
1986
n/a
1987
n/a
1988
n/a
1989
n/a
1990
n/a
1991
n/a
1992
n/a
1993
n/a
1994
n/a
1995
n/a
1996
n/a
1997
n/a
1998
n/a
1999
n/a
2000
n/a
2004
n/a
2005
n/a
2006
n/a
2007
n/a
Coldest night (TNn)
The coldest night of the year at Karnack, 1942 to 2007. The record is -20.0 C (-4.0 F) in 1951, marked on the chart; the median year is -8.9 C (16.0 F).
Coldest night (TNn) at Karnack by year
Year
Coldest night (TNn)
1942
-2.8 C (27.0 F)
1943
-12.8 C (9.0 F)
1944
-8.3 C (17.1 F)
1945
-11.1 C (12.0 F)
1946
-9.4 C (15.1 F)
1947
-12.8 C (9.0 F)
1948
-8.9 C (16.0 F)
1949
-13.3 C (8.1 F)
1950
-8.3 C (17.1 F)
1951
-20.0 C (-4.0 F)
1952
-5.6 C (21.9 F)
1953
-8.3 C (17.1 F)
1954
-7.8 C (18.0 F)
1955
-10.0 C (14.0 F)
1956
-5.6 C (21.9 F)
1957
-8.9 C (16.0 F)
1958
-9.4 C (15.1 F)
1959
-10.0 C (14.0 F)
1960
-7.2 C (19.0 F)
1961
-9.4 C (15.1 F)
1962
-17.8 C (0.0 F)
1963
-11.7 C (10.9 F)
1964
-11.1 C (12.0 F)
1965
-10.6 C (12.9 F)
1966
-11.1 C (12.0 F)
1967
-6.7 C (19.9 F)
1968
-7.8 C (18.0 F)
1969
-6.1 C (21.0 F)
1970
-8.9 C (16.0 F)
1971
-6.1 C (21.0 F)
1972
-8.3 C (17.1 F)
1973
-8.9 C (16.0 F)
1974
-6.7 C (19.9 F)
1975
-8.9 C (16.0 F)
1976
n/a
1977
n/a
1978
n/a
1979
-6.1 C (21.0 F)
1980
-7.2 C (19.0 F)
1981
-5.6 C (21.9 F)
1982
n/a
1983
n/a
1984
n/a
1985
n/a
1986
n/a
1987
n/a
1988
n/a
1989
n/a
1990
n/a
1991
n/a
1992
n/a
1993
n/a
1994
n/a
1995
n/a
1996
n/a
1997
n/a
1998
n/a
1999
n/a
2000
n/a
2004
n/a
2005
n/a
2006
n/a
2007
n/a
Wettest day (Rx1day)
The wettest day of the year at Karnack, 1942 to 2007. The record is 203.7 mm (8.0 in) in 1992, marked on the chart; the median year is 82.3 mm (3.2 in).
Wettest day (Rx1day) at Karnack by year
Year
Wettest day (Rx1day)
1942
78.0 mm (3.1 in)
1943
53.8 mm (2.1 in)
1944
79.5 mm (3.1 in)
1945
68.6 mm (2.7 in)
1946
83.8 mm (3.3 in)
1947
88.9 mm (3.5 in)
1948
52.8 mm (2.1 in)
1949
82.3 mm (3.2 in)
1950
148.3 mm (5.8 in)
1951
90.4 mm (3.6 in)
1952
83.8 mm (3.3 in)
1953
90.7 mm (3.6 in)
1954
50.8 mm (2.0 in)
1955
74.9 mm (2.9 in)
1956
64.3 mm (2.5 in)
1957
96.0 mm (3.8 in)
1958
108.0 mm (4.3 in)
1959
78.0 mm (3.1 in)
1960
146.8 mm (5.8 in)
1961
139.2 mm (5.5 in)
1962
58.4 mm (2.3 in)
1963
55.6 mm (2.2 in)
1964
66.8 mm (2.6 in)
1965
79.2 mm (3.1 in)
1966
82.3 mm (3.2 in)
1967
106.7 mm (4.2 in)
1968
64.3 mm (2.5 in)
1969
124.7 mm (4.9 in)
1970
78.2 mm (3.1 in)
1971
58.2 mm (2.3 in)
1972
77.5 mm (3.1 in)
1973
89.4 mm (3.5 in)
1974
69.9 mm (2.8 in)
1975
80.0 mm (3.1 in)
1976
69.1 mm (2.7 in)
1977
66.5 mm (2.6 in)
1978
74.9 mm (2.9 in)
1979
90.2 mm (3.6 in)
1980
67.3 mm (2.6 in)
1981
85.6 mm (3.4 in)
1982
77.2 mm (3.0 in)
1983
78.5 mm (3.1 in)
1984
95.5 mm (3.8 in)
1985
50.8 mm (2.0 in)
1986
86.4 mm (3.4 in)
1987
68.6 mm (2.7 in)
1988
88.6 mm (3.5 in)
1989
124.5 mm (4.9 in)
1990
119.9 mm (4.7 in)
1991
88.9 mm (3.5 in)
1992
203.7 mm (8.0 in)
1993
102.9 mm (4.1 in)
1994
97.0 mm (3.8 in)
1995
93.0 mm (3.7 in)
1996
104.4 mm (4.1 in)
1997
97.5 mm (3.8 in)
1998
104.1 mm (4.1 in)
1999
75.4 mm (3.0 in)
2000
51.6 mm (2.0 in)
2004
59.7 mm (2.4 in)
2005
158.2 mm (6.2 in)
2006
88.9 mm (3.5 in)
2007
85.1 mm (3.4 in)
Wettest five days (Rx5day)
The wettest five days of the year at Karnack, 1942 to 2007. The record is 272.0 mm (10.7 in) in 1992, marked on the chart; the median year is 132.4 mm (5.2 in).
Wettest five days (Rx5day) at Karnack by year
Year
Wettest five days (Rx5day)
1942
136.9 mm (5.4 in)
1943
68.0 mm (2.7 in)
1944
144.3 mm (5.7 in)
1945
150.9 mm (5.9 in)
1946
133.6 mm (5.3 in)
1947
108.5 mm (4.3 in)
1948
85.1 mm (3.4 in)
1949
132.0 mm (5.2 in)
1950
225.0 mm (8.9 in)
1951
162.5 mm (6.4 in)
1952
91.1 mm (3.6 in)
1953
142.0 mm (5.6 in)
1954
77.5 mm (3.1 in)
1955
125.2 mm (4.9 in)
1956
114.8 mm (4.5 in)
1957
136.2 mm (5.4 in)
1958
221.4 mm (8.7 in)
1959
114.3 mm (4.5 in)
1960
229.3 mm (9.0 in)
1961
169.7 mm (6.7 in)
1962
84.3 mm (3.3 in)
1963
104.2 mm (4.1 in)
1964
80.8 mm (3.2 in)
1965
144.2 mm (5.7 in)
1966
206.2 mm (8.1 in)
1967
154.5 mm (6.1 in)
1968
121.9 mm (4.8 in)
1969
145.8 mm (5.7 in)
1970
120.9 mm (4.8 in)
1971
114.8 mm (4.5 in)
1972
132.1 mm (5.2 in)
1973
152.0 mm (6.0 in)
1974
130.9 mm (5.2 in)
1975
174.5 mm (6.9 in)
1976
127.8 mm (5.0 in)
1977
102.4 mm (4.0 in)
1978
93.4 mm (3.7 in)
1979
171.5 mm (6.8 in)
1980
132.7 mm (5.2 in)
1981
176.4 mm (6.9 in)
1982
124.9 mm (4.9 in)
1983
113.3 mm (4.5 in)
1984
132.8 mm (5.2 in)
1985
106.6 mm (4.2 in)
1986
169.7 mm (6.7 in)
1987
144.8 mm (5.7 in)
1988
100.0 mm (3.9 in)
1989
147.3 mm (5.8 in)
1990
132.1 mm (5.2 in)
1991
132.4 mm (5.2 in)
1992
272.0 mm (10.7 in)
1993
178.6 mm (7.0 in)
1994
189.5 mm (7.5 in)
1995
99.1 mm (3.9 in)
1996
138.7 mm (5.5 in)
1997
123.4 mm (4.9 in)
1998
107.8 mm (4.2 in)
1999
99.5 mm (3.9 in)
2000
116.7 mm (4.6 in)
2004
172.4 mm (6.8 in)
2005
163.3 mm (6.4 in)
2006
88.9 mm (3.5 in)
2007
156.3 mm (6.2 in)
Longest dry spell (CDD)
The longest dry spell of the year at Karnack, 1942 to 2007. The record is 109 days in 1951, marked on the chart; the median year is 25 days.
Longest dry spell (CDD) at Karnack by year
Year
Longest dry spell (CDD)
1942
19 days
1943
33 days
1944
27 days
1945
24 days
1946
25 days
1947
33 days
1948
22 days
1949
14 days
1950
38 days
1951
109 days
1952
48 days
1953
60 days
1954
52 days
1955
27 days
1956
32 days
1957
24 days
1958
28 days
1959
24 days
1960
17 days
1961
22 days
1962
27 days
1963
33 days
1964
23 days
1965
28 days
1966
20 days
1967
20 days
1968
23 days
1969
23 days
1970
26 days
1971
30 days
1972
18 days
1973
16 days
1974
18 days
1975
47 days
1976
15 days
1977
15 days
1978
40 days
1979
26 days
1980
34 days
1981
19 days
1982
26 days
1983
21 days
1984
20 days
1985
24 days
1986
25 days
1987
29 days
1988
18 days
1989
23 days
1990
28 days
1991
27 days
1992
21 days
1993
38 days
1994
18 days
1995
35 days
1996
21 days
1997
50 days
1998
28 days
1999
24 days
2000
18 days
2004
42 days
2005
32 days
2006
24 days
2007
11 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
26 years with a frost
Across 26 years with a frost, the median last spring frost at Karnack falls on 17 March and the median first autumn frost on 9 November, which leaves a median of 235 days between them.
Fitted over all years, the growing season changes by +5.1 days per decade at this station.
Frost dates and growing season at Karnack
Measure
Median, all years
Earliest period
Recent period (1943 to 1974)
Recent against earliest
Fitted trend
Last spring frost
17 March
n/a
17 March
n/a
+2.2 days per decade
First autumn frost
9 November
n/a
9 November
n/a
+7.3 days per decade
Growing days
235 days
n/a
235 days
n/a
+5.1 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
57 years, 1943 to 2006
A day with at least 81.4 mm (3.2 in) of rain is expected about once in 2 years. A day with at least 193.9 mm (7.6 in) of rain is expected about once in 100 years.
Rainfall return levels at Karnack: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
81.4 mm (3.2 in)
5 years
105.5 mm (4.2 in)
10 years
123.6 mm (4.9 in)
25 years
149.3 mm (5.9 in)
50 years
170.7 mm (6.7 in)
100 years
193.9 mm (7.6 in)
Longer than the 57 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, 57 years of values from 1943 to 2006.
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: 203.7 mm (8.0 in) in 1992; 158.2 mm (6.2 in) in 2005; 148.3 mm (5.8 in) in 1950.
Download the Data
Data for Karnack standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Karnack 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.