Record envelope, standing records and threshold days for Ft Gibson Dam (USC00343286), Oklahoma, United States, with 34 years of record.
Key Facts for Ft Gibson Dam
Ft Gibson Dam (USC00343286) is a weather station in Oklahoma, United States at 35.87 latitude and -95.23 longitude, 162 m (531 ft) above sea level.
The station reports from 1946 to 1979, 34 years of record.
1,464 records set at Ft Gibson Dam still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Ft Gibson Dam set a daily record low maximum temperature of 28.9 C (84.0 F) on 19 July 1979.
About the Station
Location: Oklahoma, United States, 35.87 latitude, -95.23 longitude.
Elevation: 162 m (531 ft).
Period of record: 1946 to 1979, 34 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 Ft Gibson 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 Ft Gibson Dam, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
26.1 C (79.0 F)
-21.1 C (-6.0 F)
n/a
n/a
Feb
28.3 C (82.9 F)
-18.9 C (-2.0 F)
n/a
n/a
Mar
32.2 C (90.0 F)
-20.0 C (-4.0 F)
n/a
n/a
Apr
33.9 C (93.0 F)
-5.0 C (23.0 F)
n/a
n/a
May
35.0 C (95.0 F)
1.1 C (34.0 F)
n/a
n/a
Jun
40.6 C (105.1 F)
8.9 C (48.0 F)
n/a
n/a
Jul
45.6 C (114.1 F)
11.1 C (52.0 F)
n/a
n/a
Aug
43.3 C (109.9 F)
11.1 C (52.0 F)
n/a
n/a
Sep
41.7 C (107.1 F)
3.3 C (37.9 F)
n/a
n/a
Oct
36.7 C (98.1 F)
-4.4 C (24.1 F)
n/a
n/a
Nov
32.8 C (91.0 F)
-11.7 C (10.9 F)
n/a
n/a
Dec
27.2 C (81.0 F)
-16.7 C (1.9 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Ft Gibson Dam still stand. 1954 holds the most, with 95.
Standing records at Ft Gibson Dam by the year they were set
Year set
Standing records
1946
24
1947
54
1948
55
1949
34
1950
63
1951
50
1952
57
1953
78
1954
95
1955
44
1956
66
1957
28
1958
31
1959
26
1960
37
1961
34
1962
38
1963
65
1964
44
1965
41
1966
41
1967
40
1968
34
1969
18
1970
32
1971
27
1972
35
1973
18
1974
48
1975
35
1976
71
1977
30
1978
40
1979
31
All-Time Record Progression
1 new records
1 all-time records were set at Ft Gibson Dam between 11 January 1977 and 11 January 1977. Each dot is a new record.
When Ft Gibson Dam set new all-time records
Date
Kind
Detail
1977-01-11
Record low minimum temperature
Record low minimum temperature -21.1 C (-6.0 F)
Wettest Day of Each Month
May: 145.8 mm (5.7 in)
The wettest day on record for each calendar month at Ft Gibson Dam. The most was 145.8 mm (5.7 in) on 10 May 1950.
Record daily precipitation for each month at Ft Gibson Dam
Month
Record daily precipitation (mm)
Date
Jan
88.1 mm (3.5 in)
29 January 1969
Feb
81.3 mm (3.2 in)
20 February 1951
Mar
76.5 mm (3.0 in)
23 March 1969
Apr
81.3 mm (3.2 in)
20 April 1976
May
145.8 mm (5.7 in)
10 May 1950
Jun
113.0 mm (4.4 in)
21 June 1947
Jul
97.0 mm (3.8 in)
15 July 1961
Aug
76.2 mm (3.0 in)
2 August 1966
Sep
95.8 mm (3.8 in)
12 September 1947
Oct
109.2 mm (4.3 in)
22 October 1972
Nov
108.0 mm (4.3 in)
24 November 1973
Dec
67.8 mm (2.7 in)
10 December 1946
Period of Record Coverage
1946 to 1979
Complete yearUnder 90 percent of days
34 years of record at Ft Gibson Dam, 1946 to 1979. 2 years have data for under 90 percent of days and are left out of rankings: 1946, 1979.
Cooler than the station meanWarmer than the station mean
One stripe for each of 31 complete years at Ft Gibson Dam, 1947 to 1978. Blue stripes are years cooler than the station's own mean of 16.1 C (61.0 F); red stripes are warmer. The coolest year was 1978, at 14.6 C (58.2 F), and the warmest was 1954, at 18.0 C (64.3 F). The strongest colour marks a difference of 1.9 C (3.4 F).
Annual mean temperature at Ft Gibson Dam as warming stripes, 1947 to 1978
Year
Annual mean temperature
Difference from the station mean
1947
16.1 C
-0.02 C
1948
15.6 C
-0.48 C
1949
15.4 C
-0.68 C
1950
15.9 C
-0.22 C
1951
15.9 C
-0.21 C
1952
17.2 C
+1.07 C
1953
17.5 C
+1.36 C
1954
18.0 C
+1.86 C
1955
16.4 C
+0.24 C
1956
17.1 C
+1.00 C
1957
16.5 C
+0.37 C
1958
15.9 C
-0.17 C
1959
16.2 C
+0.07 C
1960
15.9 C
-0.17 C
1961
15.7 C
-0.43 C
1962
16.5 C
+0.43 C
1963
16.8 C
+0.64 C
1964
16.8 C
+0.68 C
1965
16.9 C
+0.76 C
1966
15.8 C
-0.34 C
1967
16.0 C
-0.07 C
1968
15.3 C
-0.77 C
1969
16.1 C
-0.04 C
1970
15.7 C
-0.41 C
1971
15.9 C
-0.25 C
1972
15.6 C
-0.50 C
1973
15.8 C
-0.32 C
1974
15.6 C
-0.55 C
1975
15.0 C
-1.09 C
1977
16.0 C
-0.11 C
1978
14.6 C
-1.53 C
The annual mean temperature here has fallen by 0.3 C (0.1 to 0.6) per decade over 1947 to 1978. In Fahrenheit: 0.6 F (0.2 to 1.1) per decade. The slope is a straight line fitted to 31 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Ft Gibson Dam
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.3 C (-0.6 to -0.1) per decade
-0.6 F (-1.1 to -0.2) per decade
1947 to 1978
31
Fall
Mean daily maximum
-0.5 C (-0.8 to -0.1) per decade
-0.9 F (-1.5 to -0.2) per decade
1947 to 1978
31
Fall
Mean daily minimum
-0.2 C (-0.5 to 0.1) per decade
-0.4 F (-0.9 to 0.1) per decade
1947 to 1978
31
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
1946 to 1979
Yearly extremes at Ft Gibson Dam: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
45.6 C (114.1 F)
1954
39.4 C (102.9 F)
34
Coldest night (TNn)
-21.1 C (-6.0 F)
1977
-15.8 C (3.5 F)
34
Wettest day (Rx1day)
145.8 mm (5.7 in)
1950
78.4 mm (3.1 in)
34
Wettest five days (Rx5day)
277.4 mm (10.9 in)
1950
126.5 mm (5.0 in)
34
Longest dry spell (CDD)
42 days
1952
25 days
34
Hottest day (TXx)
The hottest day of the year at Ft Gibson Dam, 1946 to 1979. The record is 45.6 C (114.1 F) in 1954, marked on the chart; the median year is 39.4 C (102.9 F).
Hottest day (TXx) at Ft Gibson Dam by year
Year
Hottest day (TXx)
1946
41.7 C (107.1 F)
1947
42.2 C (108.0 F)
1948
36.1 C (97.0 F)
1949
37.8 C (100.0 F)
1950
36.1 C (97.0 F)
1951
40.6 C (105.1 F)
1952
39.4 C (102.9 F)
1953
40.6 C (105.1 F)
1954
45.6 C (114.1 F)
1955
39.4 C (102.9 F)
1956
43.3 C (109.9 F)
1957
40.6 C (105.1 F)
1958
37.2 C (99.0 F)
1959
36.7 C (98.1 F)
1960
38.3 C (100.9 F)
1961
37.2 C (99.0 F)
1962
39.4 C (102.9 F)
1963
40.0 C (104.0 F)
1964
41.1 C (106.0 F)
1965
38.9 C (102.0 F)
1966
40.0 C (104.0 F)
1967
36.7 C (98.1 F)
1968
36.7 C (98.1 F)
1969
40.0 C (104.0 F)
1970
40.0 C (104.0 F)
1971
38.3 C (100.9 F)
1972
38.9 C (102.0 F)
1973
35.6 C (96.1 F)
1974
41.1 C (106.0 F)
1975
37.8 C (100.0 F)
1976
37.8 C (100.0 F)
1977
41.1 C (106.0 F)
1978
39.4 C (102.9 F)
1979
35.6 C (96.1 F)
Coldest night (TNn)
The coldest night of the year at Ft Gibson Dam, 1946 to 1979. The record is -21.1 C (-6.0 F) in 1977, marked on the chart; the median year is -15.8 C (3.5 F).
Coldest night (TNn) at Ft Gibson Dam by year
Year
Coldest night (TNn)
1946
-13.9 C (7.0 F)
1947
-20.6 C (-5.1 F)
1948
-20.0 C (-4.0 F)
1949
-17.8 C (0.0 F)
1950
-16.7 C (1.9 F)
1951
-18.3 C (-0.9 F)
1952
-8.9 C (16.0 F)
1953
-12.8 C (9.0 F)
1954
-15.0 C (5.0 F)
1955
-16.7 C (1.9 F)
1956
-11.7 C (10.9 F)
1957
-12.2 C (10.0 F)
1958
-13.9 C (7.0 F)
1959
-16.7 C (1.9 F)
1960
-12.2 C (10.0 F)
1961
-13.3 C (8.1 F)
1962
-16.7 C (1.9 F)
1963
-17.8 C (0.0 F)
1964
-14.4 C (6.1 F)
1965
-11.1 C (12.0 F)
1966
-16.7 C (1.9 F)
1967
-10.6 C (12.9 F)
1968
-17.2 C (1.0 F)
1969
-12.8 C (9.0 F)
1970
-18.9 C (-2.0 F)
1971
-17.8 C (0.0 F)
1972
-15.0 C (5.0 F)
1973
-12.8 C (9.0 F)
1974
-13.3 C (8.1 F)
1975
-13.3 C (8.1 F)
1976
-17.2 C (1.0 F)
1977
-21.1 C (-6.0 F)
1978
-17.2 C (1.0 F)
1979
-18.9 C (-2.0 F)
Wettest day (Rx1day)
The wettest day of the year at Ft Gibson Dam, 1946 to 1979. The record is 145.8 mm (5.7 in) in 1950, marked on the chart; the median year is 78.4 mm (3.1 in).
Wettest day (Rx1day) at Ft Gibson Dam by year
Year
Wettest day (Rx1day)
1946
72.9 mm (2.9 in)
1947
113.0 mm (4.4 in)
1948
80.0 mm (3.1 in)
1949
52.3 mm (2.1 in)
1950
145.8 mm (5.7 in)
1951
81.3 mm (3.2 in)
1952
55.6 mm (2.2 in)
1953
50.3 mm (2.0 in)
1954
83.3 mm (3.3 in)
1955
55.4 mm (2.2 in)
1956
68.1 mm (2.7 in)
1957
83.1 mm (3.3 in)
1958
92.2 mm (3.6 in)
1959
94.0 mm (3.7 in)
1960
81.8 mm (3.2 in)
1961
97.0 mm (3.8 in)
1962
46.7 mm (1.8 in)
1963
67.1 mm (2.6 in)
1964
53.8 mm (2.1 in)
1965
74.9 mm (2.9 in)
1966
76.2 mm (3.0 in)
1967
61.0 mm (2.4 in)
1968
76.7 mm (3.0 in)
1969
100.8 mm (4.0 in)
1970
93.2 mm (3.7 in)
1971
105.4 mm (4.1 in)
1972
109.2 mm (4.3 in)
1973
108.0 mm (4.3 in)
1974
106.7 mm (4.2 in)
1975
67.3 mm (2.6 in)
1976
81.3 mm (3.2 in)
1977
64.8 mm (2.6 in)
1978
66.3 mm (2.6 in)
1979
47.5 mm (1.9 in)
Wettest five days (Rx5day)
The wettest five days of the year at Ft Gibson Dam, 1946 to 1979. The record is 277.4 mm (10.9 in) in 1950, marked on the chart; the median year is 126.5 mm (5.0 in).
Wettest five days (Rx5day) at Ft Gibson Dam by year
Year
Wettest five days (Rx5day)
1946
161.0 mm (6.3 in)
1947
132.4 mm (5.2 in)
1948
182.9 mm (7.2 in)
1949
137.6 mm (5.4 in)
1950
277.4 mm (10.9 in)
1951
111.5 mm (4.4 in)
1952
81.0 mm (3.2 in)
1953
88.7 mm (3.5 in)
1954
176.3 mm (6.9 in)
1955
91.2 mm (3.6 in)
1956
93.3 mm (3.7 in)
1957
202.7 mm (8.0 in)
1958
129.0 mm (5.1 in)
1959
159.3 mm (6.3 in)
1960
122.2 mm (4.8 in)
1961
180.7 mm (7.1 in)
1962
74.9 mm (2.9 in)
1963
85.6 mm (3.4 in)
1964
79.2 mm (3.1 in)
1965
117.6 mm (4.6 in)
1966
108.5 mm (4.3 in)
1967
102.5 mm (4.0 in)
1968
103.0 mm (4.1 in)
1969
145.5 mm (5.7 in)
1970
133.9 mm (5.3 in)
1971
105.4 mm (4.1 in)
1972
155.7 mm (6.1 in)
1973
176.4 mm (6.9 in)
1974
204.2 mm (8.0 in)
1975
124.0 mm (4.9 in)
1976
180.6 mm (7.1 in)
1977
153.5 mm (6.0 in)
1978
118.7 mm (4.7 in)
1979
85.5 mm (3.4 in)
Longest dry spell (CDD)
The longest dry spell of the year at Ft Gibson Dam, 1946 to 1979. The record is 42 days in 1952, marked on the chart; the median year is 25 days.
Longest dry spell (CDD) at Ft Gibson Dam by year
Year
Longest dry spell (CDD)
1946
23 days
1947
27 days
1948
38 days
1949
21 days
1950
31 days
1951
17 days
1952
42 days
1953
17 days
1954
39 days
1955
20 days
1956
28 days
1957
18 days
1958
19 days
1959
28 days
1960
28 days
1961
19 days
1962
25 days
1963
38 days
1964
29 days
1965
33 days
1966
19 days
1967
25 days
1968
16 days
1969
22 days
1970
30 days
1971
25 days
1972
32 days
1973
19 days
1974
33 days
1975
25 days
1976
19 days
1977
26 days
1978
30 days
1979
13 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
31 years with a frost
Across 31 years with a frost, the median last spring frost at Ft Gibson Dam falls on 27 March and the median first autumn frost on 6 November, which leaves a median of 226 days between them.
Fitted over all years, the growing season changes by +6.8 days per decade at this station.
Frost dates and growing season at Ft Gibson Dam
Measure
Median, all years
Earliest period
Recent period (1948 to 1978)
Recent against earliest
Fitted trend
Last spring frost
27 March
n/a
26 March
n/a
-1.7 days per decade
First autumn frost
6 November
n/a
6 November
n/a
+5.2 days per decade
Growing days
226 days
n/a
226 days
n/a
+6.8 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, 1947 to 1978
A day with at least 78.5 mm (3.1 in) of rain is expected about once in 2 years. A day with at least 144.7 mm (5.7 in) of rain is expected about once in 100 years.
Rainfall return levels at Ft Gibson 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
78.5 mm (3.1 in)
5 years
99.1 mm (3.9 in)
10 years
111.4 mm (4.4 in)
25 years
125.8 mm (5.0 in)
50 years
135.6 mm (5.3 in)
Longer than the 32 years of record
100 years
144.7 mm (5.7 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 1947 to 1978.
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: 145.8 mm (5.7 in) in 1950; 113.0 mm (4.4 in) in 1947; 109.2 mm (4.3 in) in 1972.
Download the Data
Data for Ft Gibson Dam standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Ft Gibson 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.