Record envelope, standing records and threshold days for Broken Bow Dam (USC00341168), Oklahoma, United States, with 34 years of record.
Key Facts for Broken Bow Dam
Broken Bow Dam (USC00341168) is a weather station in Oklahoma, United States at 34.13 latitude and -94.70 longitude, 135 m (443 ft) above sea level.
The station reports from 1964 to 1997, 34 years of record.
1,464 records set at Broken Bow Dam still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Broken Bow Dam tied a daily record high maximum temperature of 39.4 C (102.9 F) on 28 July 1997.
About the Station
Location: Oklahoma, United States, 34.13 latitude, -94.70 longitude.
Elevation: 135 m (443 ft).
Period of record: 1964 to 1997, 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 Broken Bow 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 Broken Bow Dam, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
25.6 C (78.1 F)
-17.2 C (1.0 F)
n/a
n/a
Feb
31.7 C (89.1 F)
-17.8 C (0.0 F)
n/a
n/a
Mar
31.7 C (89.1 F)
-13.3 C (8.1 F)
n/a
n/a
Apr
35.0 C (95.0 F)
-4.4 C (24.1 F)
n/a
n/a
May
36.7 C (98.1 F)
2.8 C (37.0 F)
n/a
n/a
Jun
38.9 C (102.0 F)
7.8 C (46.0 F)
n/a
n/a
Jul
41.7 C (107.1 F)
12.2 C (54.0 F)
n/a
n/a
Aug
42.2 C (108.0 F)
10.0 C (50.0 F)
n/a
n/a
Sep
42.2 C (108.0 F)
2.2 C (36.0 F)
n/a
n/a
Oct
35.0 C (95.0 F)
-3.9 C (25.0 F)
n/a
n/a
Nov
30.6 C (87.1 F)
-11.7 C (10.9 F)
n/a
n/a
Dec
26.1 C (79.0 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 Broken Bow Dam still stand. 1971 holds the most, with 75.
Standing records at Broken Bow Dam by the year they were set
Year set
Standing records
1964
20
1965
56
1966
49
1967
54
1968
24
1969
31
1970
64
1971
75
1972
56
1973
28
1974
55
1975
37
1976
53
1977
43
1978
52
1979
46
1980
48
1981
28
1982
44
1983
47
1984
49
1985
46
1986
42
1987
39
1988
29
1989
65
1990
40
1991
31
1992
32
1993
31
1994
23
1995
40
1996
65
1997
22
All-Time Record Progression
1 new records
1 all-time records were set at Broken Bow Dam between 2 February 1996 and 2 February 1996. Each dot is a new record.
When Broken Bow Dam set new all-time records
Date
Kind
Detail
1996-02-02
Record low minimum temperature
Record low minimum temperature -17.8 C (0.0 F)
Wettest Day of Each Month
Dec: 209.6 mm (8.3 in)
The wettest day on record for each calendar month at Broken Bow Dam. The most was 209.6 mm (8.3 in) on 10 December 1971.
Record daily precipitation for each month at Broken Bow Dam
Month
Record daily precipitation (mm)
Date
Jan
127.0 mm (5.0 in)
30 January 1969
Feb
89.9 mm (3.5 in)
12 February 1992
Mar
92.2 mm (3.6 in)
30 March 1979
Apr
100.1 mm (3.9 in)
12 April 1991
May
90.7 mm (3.6 in)
3 May 1975
Jun
74.9 mm (2.9 in)
2 June 1973
Jul
179.1 mm (7.1 in)
2 July 1983
Aug
126.5 mm (5.0 in)
20 August 1970
Sep
207.3 mm (8.2 in)
28 September 1980
Oct
135.9 mm (5.4 in)
19 October 1993
Nov
147.3 mm (5.8 in)
16 November 1978
Dec
209.6 mm (8.3 in)
10 December 1971
Period of Record Coverage
1964 to 1997
Complete yearUnder 90 percent of days
34 years of record at Broken Bow Dam, 1964 to 1997. 8 years have data for under 90 percent of days and are left out of rankings: 1964, 1965, 1966, 1967, 1968, 1969, 1993, 1997.
Cooler than the station meanWarmer than the station mean
One stripe for each of 29 complete years at Broken Bow Dam, 1965 to 1996. Blue stripes are years cooler than the station's own mean of 16.2 C (61.2 F); red stripes are warmer. The coolest year was 1979, at 15.1 C (59.1 F), and the warmest was 1986, at 17.2 C (62.9 F). The strongest colour marks a difference of 1.2 C (2.2 F).
Annual mean temperature at Broken Bow Dam as warming stripes, 1965 to 1996
Year
Annual mean temperature
Difference from the station mean
1965
16.7 C
+0.43 C
1966
15.4 C
-0.82 C
1967
16.0 C
-0.29 C
1968
15.6 C
-0.67 C
1970
16.5 C
+0.26 C
1971
17.1 C
+0.81 C
1972
16.8 C
+0.51 C
1973
16.1 C
-0.17 C
1974
16.3 C
+0.08 C
1975
16.2 C
0.00 C
1976
15.4 C
-0.84 C
1977
16.7 C
+0.46 C
1978
15.7 C
-0.55 C
1979
15.1 C
-1.16 C
1980
16.1 C
-0.14 C
1982
15.9 C
-0.35 C
1983
15.6 C
-0.60 C
1984
16.2 C
-0.04 C
1985
16.6 C
+0.35 C
1986
17.2 C
+0.92 C
1987
16.9 C
+0.64 C
1989
15.6 C
-0.69 C
1990
17.0 C
+0.73 C
1991
17.0 C
+0.71 C
1992
16.4 C
+0.18 C
1993
16.3 C
+0.08 C
1994
16.8 C
+0.60 C
1995
16.6 C
+0.34 C
1996
15.6 C
-0.69 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
1964 to 1997
Yearly extremes at Broken Bow Dam: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
42.2 C (108.0 F)
1985
38.9 C (102.0 F)
34
Coldest night (TNn)
-17.8 C (0.0 F)
1996
-11.9 C (10.5 F)
34
Wettest day (Rx1day)
209.6 mm (8.3 in)
1971
96.6 mm (3.8 in)
34
Wettest five days (Rx5day)
336.3 mm (13.2 in)
1991
148.1 mm (5.8 in)
34
Longest dry spell (CDD)
38 days
1993
21 days
34
Hottest day (TXx)
The hottest day of the year at Broken Bow Dam, 1964 to 1997. The record is 42.2 C (108.0 F) in 1985, marked on the chart; the median year is 38.9 C (102.0 F).
Hottest day (TXx) at Broken Bow Dam by year
Year
Hottest day (TXx)
1964
36.1 C (97.0 F)
1965
38.3 C (100.9 F)
1966
39.4 C (102.9 F)
1967
36.7 C (98.1 F)
1968
38.3 C (100.9 F)
1969
41.1 C (106.0 F)
1970
40.0 C (104.0 F)
1971
39.4 C (102.9 F)
1972
38.3 C (100.9 F)
1973
37.2 C (99.0 F)
1974
41.1 C (106.0 F)
1975
38.3 C (100.9 F)
1976
38.9 C (102.0 F)
1977
40.0 C (104.0 F)
1978
39.4 C (102.9 F)
1979
37.8 C (100.0 F)
1980
41.1 C (106.0 F)
1981
37.8 C (100.0 F)
1982
37.8 C (100.0 F)
1983
38.9 C (102.0 F)
1984
40.0 C (104.0 F)
1985
42.2 C (108.0 F)
1986
42.2 C (108.0 F)
1987
39.4 C (102.9 F)
1988
38.3 C (100.9 F)
1989
36.7 C (98.1 F)
1990
39.4 C (102.9 F)
1991
38.9 C (102.0 F)
1992
35.0 C (95.0 F)
1993
41.1 C (106.0 F)
1994
37.2 C (99.0 F)
1995
40.0 C (104.0 F)
1996
38.9 C (102.0 F)
1997
39.4 C (102.9 F)
Coldest night (TNn)
The coldest night of the year at Broken Bow Dam, 1964 to 1997. The record is -17.8 C (0.0 F) in 1996, marked on the chart; the median year is -11.9 C (10.5 F).
Coldest night (TNn) at Broken Bow Dam by year
Year
Coldest night (TNn)
1964
-12.2 C (10.0 F)
1965
-12.2 C (10.0 F)
1966
-17.2 C (1.0 F)
1967
-11.1 C (12.0 F)
1968
-8.3 C (17.1 F)
1969
-8.9 C (16.0 F)
1970
-13.9 C (7.0 F)
1971
-10.6 C (12.9 F)
1972
-12.2 C (10.0 F)
1973
-10.6 C (12.9 F)
1974
-9.4 C (15.1 F)
1975
-11.1 C (12.0 F)
1976
-13.9 C (7.0 F)
1977
-16.1 C (3.0 F)
1978
-11.7 C (10.9 F)
1979
-15.0 C (5.0 F)
1980
-11.7 C (10.9 F)
1981
-15.6 C (3.9 F)
1982
-16.7 C (1.9 F)
1983
-16.7 C (1.9 F)
1984
-12.8 C (9.0 F)
1985
-16.7 C (1.9 F)
1986
-7.8 C (18.0 F)
1987
-8.3 C (17.1 F)
1988
-12.2 C (10.0 F)
1989
-16.1 C (3.0 F)
1990
-13.3 C (8.1 F)
1991
-8.3 C (17.1 F)
1992
-11.1 C (12.0 F)
1993
-7.8 C (18.0 F)
1994
-9.4 C (15.1 F)
1995
-11.1 C (12.0 F)
1996
-17.8 C (0.0 F)
1997
-11.7 C (10.9 F)
Wettest day (Rx1day)
The wettest day of the year at Broken Bow Dam, 1964 to 1997. The record is 209.6 mm (8.3 in) in 1971, marked on the chart; the median year is 96.6 mm (3.8 in).
Wettest day (Rx1day) at Broken Bow Dam by year
Year
Wettest day (Rx1day)
1964
85.3 mm (3.4 in)
1965
134.9 mm (5.3 in)
1966
84.6 mm (3.3 in)
1967
94.5 mm (3.7 in)
1968
79.8 mm (3.1 in)
1969
127.0 mm (5.0 in)
1970
126.5 mm (5.0 in)
1971
209.6 mm (8.3 in)
1972
97.8 mm (3.9 in)
1973
75.9 mm (3.0 in)
1974
78.5 mm (3.1 in)
1975
90.7 mm (3.6 in)
1976
103.1 mm (4.1 in)
1977
91.9 mm (3.6 in)
1978
147.3 mm (5.8 in)
1979
92.2 mm (3.6 in)
1980
207.3 mm (8.2 in)
1981
133.6 mm (5.3 in)
1982
105.4 mm (4.1 in)
1983
179.1 mm (7.1 in)
1984
86.4 mm (3.4 in)
1985
73.7 mm (2.9 in)
1986
65.3 mm (2.6 in)
1987
98.6 mm (3.9 in)
1988
95.3 mm (3.8 in)
1989
72.9 mm (2.9 in)
1990
83.8 mm (3.3 in)
1991
130.8 mm (5.1 in)
1992
102.4 mm (4.0 in)
1993
135.9 mm (5.4 in)
1994
122.7 mm (4.8 in)
1995
50.8 mm (2.0 in)
1996
106.2 mm (4.2 in)
1997
78.7 mm (3.1 in)
Wettest five days (Rx5day)
The wettest five days of the year at Broken Bow Dam, 1964 to 1997. The record is 336.3 mm (13.2 in) in 1991, marked on the chart; the median year is 148.1 mm (5.8 in).
Wettest five days (Rx5day) at Broken Bow Dam by year
Year
Wettest five days (Rx5day)
1964
106.7 mm (4.2 in)
1965
154.7 mm (6.1 in)
1966
184.2 mm (7.3 in)
1967
139.2 mm (5.5 in)
1968
210.7 mm (8.3 in)
1969
146.6 mm (5.8 in)
1970
144.5 mm (5.7 in)
1971
307.2 mm (12.1 in)
1972
188.0 mm (7.4 in)
1973
169.6 mm (6.7 in)
1974
162.5 mm (6.4 in)
1975
123.9 mm (4.9 in)
1976
106.1 mm (4.2 in)
1977
149.6 mm (5.9 in)
1978
234.4 mm (9.2 in)
1979
136.9 mm (5.4 in)
1980
300.2 mm (11.8 in)
1981
173.2 mm (6.8 in)
1982
126.2 mm (5.0 in)
1983
253.5 mm (10.0 in)
1984
180.4 mm (7.1 in)
1985
94.0 mm (3.7 in)
1986
125.5 mm (4.9 in)
1987
118.9 mm (4.7 in)
1988
114.2 mm (4.5 in)
1989
103.4 mm (4.1 in)
1990
143.1 mm (5.6 in)
1991
336.3 mm (13.2 in)
1992
153.4 mm (6.0 in)
1993
224.5 mm (8.8 in)
1994
109.2 mm (4.3 in)
1995
118.1 mm (4.6 in)
1996
153.7 mm (6.1 in)
1997
111.0 mm (4.4 in)
Longest dry spell (CDD)
The longest dry spell of the year at Broken Bow Dam, 1964 to 1997. The record is 38 days in 1993, marked on the chart; the median year is 21 days.
Longest dry spell (CDD) at Broken Bow Dam by year
Year
Longest dry spell (CDD)
1964
16 days
1965
24 days
1966
30 days
1967
24 days
1968
11 days
1969
20 days
1970
26 days
1971
25 days
1972
19 days
1973
16 days
1974
20 days
1975
30 days
1976
19 days
1977
30 days
1978
21 days
1979
19 days
1980
27 days
1981
20 days
1982
25 days
1983
23 days
1984
16 days
1985
18 days
1986
23 days
1987
19 days
1988
17 days
1989
21 days
1990
17 days
1991
20 days
1992
23 days
1993
38 days
1994
15 days
1995
30 days
1996
22 days
1997
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
29 years with a frost
Across 29 years with a frost, the median last spring frost at Broken Bow Dam falls on 5 April and the median first autumn frost on 6 November, which leaves a median of 219 days between them.
Fitted over all years, the growing season changes by -2.4 days per decade at this station.
Frost dates and growing season at Broken Bow Dam
Measure
Median, all years
Earliest period
Recent period (1965 to 1996)
Recent against earliest
Fitted trend
Last spring frost
5 April
n/a
5 April
n/a
+2.0 days per decade
First autumn frost
6 November
n/a
6 November
n/a
-0.4 days per decade
Growing days
219 days
n/a
219 days
n/a
-2.4 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
30 years, 1965 to 1996
A day with at least 100.3 mm (3.9 in) of rain is expected about once in 2 years. A day with at least 263.5 mm (10.4 in) of rain is expected about once in 100 years.
Rainfall return levels at Broken Bow 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
100.3 mm (3.9 in)
5 years
131.4 mm (5.2 in)
10 years
156.2 mm (6.1 in)
25 years
193.5 mm (7.6 in)
50 years
226.1 mm (8.9 in)
Longer than the 30 years of record
100 years
263.5 mm (10.4 in)
Longer than the 30 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, 30 years of values from 1965 to 1996.
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: 209.6 mm (8.3 in) in 1971; 207.3 mm (8.2 in) in 1980; 179.1 mm (7.1 in) in 1983.
Download the Data
Data for Broken Bow Dam standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Broken Bow 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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.