Record envelope, standing records and threshold days for Possum Kingdom Dam (USC00417205), Texas, United States, with 37 years of record.
Key Facts for Possum Kingdom Dam
Possum Kingdom Dam (USC00417205) is a weather station in Texas, United States at 32.87 latitude and -98.43 longitude, 275 m (902 ft) above sea level.
The station reports from 1939 to 1975, 37 years of record.
1,464 records set at Possum Kingdom Dam still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Possum Kingdom Dam set a daily record precipitation of 26.2 mm (1.0 in) on 8 April 1975.
About the Station
Location: Texas, United States, 32.87 latitude, -98.43 longitude.
Elevation: 275 m (902 ft).
Period of record: 1939 to 1975, 37 years.
Eligible elements: 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 Possum Kingdom Dam. 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 Possum Kingdom Dam, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
31.7 C (89.1 F)
-16.1 C (3.0 F)
n/a
n/a
Feb
31.7 C (89.1 F)
-15.0 C (5.0 F)
n/a
n/a
Mar
36.1 C (97.0 F)
-12.8 C (9.0 F)
n/a
n/a
Apr
36.7 C (98.1 F)
-3.3 C (26.1 F)
n/a
n/a
May
40.6 C (105.1 F)
3.9 C (39.0 F)
n/a
n/a
Jun
44.4 C (111.9 F)
10.0 C (50.0 F)
n/a
n/a
Jul
44.4 C (111.9 F)
12.2 C (54.0 F)
n/a
n/a
Aug
45.0 C (113.0 F)
13.3 C (55.9 F)
n/a
n/a
Sep
43.9 C (111.0 F)
2.2 C (36.0 F)
n/a
n/a
Oct
41.1 C (106.0 F)
-0.6 C (30.9 F)
n/a
n/a
Nov
32.2 C (90.0 F)
-8.3 C (17.1 F)
n/a
n/a
Dec
32.2 C (90.0 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 Possum Kingdom Dam still stand. 1953 holds the most, with 84.
Standing records at Possum Kingdom Dam by the year they were set
Year set
Standing records
1939
52
1940
73
1941
36
1942
49
1943
58
1944
51
1945
68
1946
59
1947
70
1948
76
1949
51
1950
69
1951
74
1952
63
1953
84
1954
68
1955
64
1956
75
1957
44
1958
37
1959
39
1960
38
1961
50
1962
47
1963
47
1964
22
Wettest Day of Each Month
Oct: 126.2 mm (5.0 in)
The wettest day on record for each calendar month at Possum Kingdom Dam. The most was 126.2 mm (5.0 in) on 3 October 1959.
Record daily precipitation for each month at Possum Kingdom Dam
Month
Record daily precipitation (mm)
Date
Jan
59.7 mm (2.4 in)
18 January 1968
Feb
38.9 mm (1.5 in)
7 February 1957
Mar
45.7 mm (1.8 in)
24 March 1943
Apr
80.8 mm (3.2 in)
26 April 1957
May
85.3 mm (3.4 in)
18 May 1942
Jun
97.0 mm (3.8 in)
10 June 1940
Jul
94.7 mm (3.7 in)
6 July 1958
Aug
81.0 mm (3.2 in)
31 August 1963
Sep
124.0 mm (4.9 in)
22 September 1940
Oct
126.2 mm (5.0 in)
3 October 1959
Nov
72.6 mm (2.9 in)
18 November 1964
Dec
71.1 mm (2.8 in)
28 December 1969
Period of Record Coverage
1939 to 1964
Complete yearUnder 90 percent of days
26 years of record at Possum Kingdom Dam, 1939 to 1964. 2 years have data for under 90 percent of days and are left out of rankings: 1941, 1964.
Cooler than the station meanWarmer than the station mean
One stripe for each of 24 complete years at Possum Kingdom Dam, 1939 to 1963. Blue stripes are years cooler than the station's own mean of 19.1 C (66.4 F); red stripes are warmer. The coolest year was 1940, at 18.0 C (64.5 F), and the warmest was 1954, at 20.6 C (69.0 F). The strongest colour marks a difference of 1.5 C (2.7 F).
Annual mean temperature at Possum Kingdom Dam as warming stripes, 1939 to 1963
Year
Annual mean temperature
Difference from the station mean
1939
19.5 C
+0.39 C
1940
18.0 C
-1.09 C
1942
18.9 C
-0.27 C
1943
19.0 C
-0.09 C
1944
18.6 C
-0.50 C
1945
18.2 C
-0.92 C
1946
18.8 C
-0.30 C
1947
18.5 C
-0.67 C
1948
18.7 C
-0.40 C
1949
18.8 C
-0.36 C
1950
19.1 C
-0.06 C
1951
19.4 C
+0.31 C
1952
19.8 C
+0.64 C
1953
20.2 C
+1.04 C
1954
20.6 C
+1.46 C
1955
20.0 C
+0.85 C
1956
20.4 C
+1.27 C
1957
19.0 C
-0.09 C
1958
18.3 C
-0.79 C
1959
18.9 C
-0.27 C
1960
18.6 C
-0.50 C
1961
18.6 C
-0.56 C
1962
19.5 C
+0.36 C
1963
19.7 C
+0.61 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
1939 to 1975
Yearly extremes at Possum Kingdom Dam: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
45.0 C (113.0 F)
1952
43.3 C (109.9 F)
26
Coldest night (TNn)
-16.1 C (3.0 F)
1947
-10.3 C (13.5 F)
26
Wettest day (Rx1day)
126.2 mm (5.0 in)
1959
59.7 mm (2.4 in)
37
Wettest five days (Rx5day)
220.3 mm (8.7 in)
1957
88.9 mm (3.5 in)
37
Longest dry spell (CDD)
73 days
1950
34 days
37
Hottest day (TXx)
The hottest day of the year at Possum Kingdom Dam, 1939 to 1975. The record is 45.0 C (113.0 F) in 1952, marked on the chart; the median year is 43.3 C (109.9 F).
Hottest day (TXx) at Possum Kingdom Dam by year
Year
Hottest day (TXx)
1939
41.7 C (107.1 F)
1940
41.1 C (106.0 F)
1941
35.6 C (96.1 F)
1942
43.3 C (109.9 F)
1943
44.4 C (111.9 F)
1944
44.4 C (111.9 F)
1945
43.9 C (111.0 F)
1946
42.2 C (108.0 F)
1947
43.9 C (111.0 F)
1948
43.3 C (109.9 F)
1949
42.2 C (108.0 F)
1950
40.0 C (104.0 F)
1951
43.9 C (111.0 F)
1952
45.0 C (113.0 F)
1953
44.4 C (111.9 F)
1954
44.4 C (111.9 F)
1955
43.3 C (109.9 F)
1956
43.3 C (109.9 F)
1957
44.4 C (111.9 F)
1958
41.1 C (106.0 F)
1959
42.8 C (109.0 F)
1960
41.7 C (107.1 F)
1961
40.0 C (104.0 F)
1962
43.3 C (109.9 F)
1963
42.8 C (109.0 F)
1964
41.7 C (107.1 F)
1965
n/a
1966
n/a
1967
n/a
1968
n/a
1969
n/a
1970
n/a
1971
n/a
1972
n/a
1973
n/a
1974
n/a
1975
n/a
Coldest night (TNn)
The coldest night of the year at Possum Kingdom Dam, 1939 to 1975. The record is -16.1 C (3.0 F) in 1947, marked on the chart; the median year is -10.3 C (13.5 F).
Coldest night (TNn) at Possum Kingdom Dam by year
Year
Coldest night (TNn)
1939
-8.9 C (16.0 F)
1940
-15.6 C (3.9 F)
1941
-3.9 C (25.0 F)
1942
-12.2 C (10.0 F)
1943
-15.0 C (5.0 F)
1944
-10.0 C (14.0 F)
1945
-7.8 C (18.0 F)
1946
-8.3 C (17.1 F)
1947
-16.1 C (3.0 F)
1948
-10.6 C (12.9 F)
1949
-12.8 C (9.0 F)
1950
-11.1 C (12.0 F)
1951
-15.0 C (5.0 F)
1952
-6.7 C (19.9 F)
1953
-8.9 C (16.0 F)
1954
-7.2 C (19.0 F)
1955
-6.1 C (21.0 F)
1956
-9.4 C (15.1 F)
1957
-5.6 C (21.9 F)
1958
-7.2 C (19.0 F)
1959
-12.8 C (9.0 F)
1960
-9.4 C (15.1 F)
1961
-10.6 C (12.9 F)
1962
-12.8 C (9.0 F)
1963
-12.2 C (10.0 F)
1964
-12.2 C (10.0 F)
1965
n/a
1966
n/a
1967
n/a
1968
n/a
1969
n/a
1970
n/a
1971
n/a
1972
n/a
1973
n/a
1974
n/a
1975
n/a
Wettest day (Rx1day)
The wettest day of the year at Possum Kingdom Dam, 1939 to 1975. The record is 126.2 mm (5.0 in) in 1959, marked on the chart; the median year is 59.7 mm (2.4 in).
Wettest day (Rx1day) at Possum Kingdom Dam by year
Year
Wettest day (Rx1day)
1939
45.0 mm (1.8 in)
1940
124.0 mm (4.9 in)
1941
49.8 mm (2.0 in)
1942
85.3 mm (3.4 in)
1943
62.5 mm (2.5 in)
1944
54.4 mm (2.1 in)
1945
55.9 mm (2.2 in)
1946
71.1 mm (2.8 in)
1947
72.9 mm (2.9 in)
1948
33.0 mm (1.3 in)
1949
73.9 mm (2.9 in)
1950
88.9 mm (3.5 in)
1951
42.7 mm (1.7 in)
1952
32.5 mm (1.3 in)
1953
47.8 mm (1.9 in)
1954
55.4 mm (2.2 in)
1955
72.6 mm (2.9 in)
1956
62.2 mm (2.4 in)
1957
94.5 mm (3.7 in)
1958
94.7 mm (3.7 in)
1959
126.2 mm (5.0 in)
1960
36.8 mm (1.4 in)
1961
53.8 mm (2.1 in)
1962
80.0 mm (3.1 in)
1963
81.0 mm (3.2 in)
1964
72.6 mm (2.9 in)
1965
37.1 mm (1.5 in)
1966
57.9 mm (2.3 in)
1967
70.1 mm (2.8 in)
1968
59.7 mm (2.4 in)
1969
71.1 mm (2.8 in)
1970
34.5 mm (1.4 in)
1971
50.3 mm (2.0 in)
1972
41.4 mm (1.6 in)
1973
51.1 mm (2.0 in)
1974
69.6 mm (2.7 in)
1975
26.2 mm (1.0 in)
Wettest five days (Rx5day)
The wettest five days of the year at Possum Kingdom Dam, 1939 to 1975. The record is 220.3 mm (8.7 in) in 1957, marked on the chart; the median year is 88.9 mm (3.5 in).
Wettest five days (Rx5day) at Possum Kingdom Dam by year
Year
Wettest five days (Rx5day)
1939
81.7 mm (3.2 in)
1940
124.0 mm (4.9 in)
1941
70.4 mm (2.8 in)
1942
129.6 mm (5.1 in)
1943
74.4 mm (2.9 in)
1944
68.8 mm (2.7 in)
1945
112.5 mm (4.4 in)
1946
91.2 mm (3.6 in)
1947
95.8 mm (3.8 in)
1948
40.3 mm (1.6 in)
1949
85.1 mm (3.4 in)
1950
119.3 mm (4.7 in)
1951
68.6 mm (2.7 in)
1952
66.4 mm (2.6 in)
1953
87.9 mm (3.5 in)
1954
78.0 mm (3.1 in)
1955
101.3 mm (4.0 in)
1956
85.8 mm (3.4 in)
1957
220.3 mm (8.7 in)
1958
141.2 mm (5.6 in)
1959
152.6 mm (6.0 in)
1960
51.2 mm (2.0 in)
1961
67.0 mm (2.6 in)
1962
157.2 mm (6.2 in)
1963
122.2 mm (4.8 in)
1964
123.1 mm (4.8 in)
1965
70.9 mm (2.8 in)
1966
82.8 mm (3.3 in)
1967
105.1 mm (4.1 in)
1968
126.8 mm (5.0 in)
1969
92.2 mm (3.6 in)
1970
92.2 mm (3.6 in)
1971
72.0 mm (2.8 in)
1972
66.9 mm (2.6 in)
1973
88.9 mm (3.5 in)
1974
97.6 mm (3.8 in)
1975
65.5 mm (2.6 in)
Longest dry spell (CDD)
The longest dry spell of the year at Possum Kingdom Dam, 1939 to 1975. The record is 73 days in 1950, marked on the chart; the median year is 34 days.
Longest dry spell (CDD) at Possum Kingdom Dam by year
Year
Longest dry spell (CDD)
1939
30 days
1940
30 days
1941
17 days
1942
29 days
1943
39 days
1944
34 days
1945
30 days
1946
29 days
1947
40 days
1948
31 days
1949
44 days
1950
73 days
1951
35 days
1952
43 days
1953
44 days
1954
40 days
1955
55 days
1956
35 days
1957
32 days
1958
27 days
1959
34 days
1960
32 days
1961
28 days
1962
53 days
1963
27 days
1964
27 days
1965
51 days
1966
44 days
1967
49 days
1968
21 days
1969
32 days
1970
51 days
1971
48 days
1972
40 days
1973
34 days
1974
32 days
1975
21 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 Possum Kingdom Dam falls on 21 March and the median first autumn frost on 11 November, which leaves a median of 234 days between them.
Frost dates and growing season at Possum Kingdom Dam
Measure
Median, all years
Earliest period
Recent period (1939 to 1963)
Recent against earliest
Fitted trend
Last spring frost
21 March
n/a
21 March
n/a
n/a
First autumn frost
11 November
n/a
11 November
n/a
n/a
Growing days
234 days
n/a
234 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
35 years, 1939 to 1974
A day with at least 61.2 mm (2.4 in) of rain is expected about once in 2 years. A day with at least 135.3 mm (5.3 in) of rain is expected about once in 100 years.
Rainfall return levels at Possum Kingdom Dam: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
61.2 mm (2.4 in)
5 years
82.2 mm (3.2 in)
10 years
95.6 mm (3.8 in)
25 years
112.0 mm (4.4 in)
50 years
123.8 mm (4.9 in)
Longer than the 35 years of record
100 years
135.3 mm (5.3 in)
Longer than the 35 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, 35 years of values from 1939 to 1974.
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: 126.2 mm (5.0 in) in 1959; 124.0 mm (4.9 in) in 1940; 94.7 mm (3.7 in) in 1958.
Download the Data
Data for Possum Kingdom Dam standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Possum Kingdom Dam 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.