Record envelope, standing records and threshold days for Lake Overholser (USC00344978), Oklahoma, United States, with 32 years of record.
Key Facts for Lake Overholser
Lake Overholser (USC00344978) is a weather station in Oklahoma, United States at 35.49 latitude and -97.66 longitude, 387 m (1,270 ft) above sea level.
The station reports from 1948 to 1979, 32 years of record.
1,464 records set at Lake Overholser still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Lake Overholser set a daily record precipitation of 26.4 mm (1.0 in) on 19 July 1979.
About the Station
Location: Oklahoma, United States, 35.49 latitude, -97.66 longitude.
Elevation: 387 m (1,270 ft).
Period of record: 1948 to 1979, 32 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 Lake Overholser. 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 Lake Overholser, 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)
-20.0 C (-4.0 F)
n/a
n/a
Feb
28.9 C (84.0 F)
-17.8 C (0.0 F)
n/a
n/a
Mar
31.7 C (89.1 F)
-16.1 C (3.0 F)
n/a
n/a
Apr
37.2 C (99.0 F)
-5.0 C (23.0 F)
n/a
n/a
May
35.6 C (96.1 F)
1.1 C (34.0 F)
n/a
n/a
Jun
41.1 C (106.0 F)
8.9 C (48.0 F)
n/a
n/a
Jul
43.3 C (109.9 F)
11.7 C (53.1 F)
n/a
n/a
Aug
41.1 C (106.0 F)
11.1 C (52.0 F)
n/a
n/a
Sep
38.9 C (102.0 F)
3.9 C (39.0 F)
n/a
n/a
Oct
37.8 C (100.0 F)
-3.3 C (26.1 F)
n/a
n/a
Nov
28.3 C (82.9 F)
-11.1 C (12.0 F)
n/a
n/a
Dec
29.4 C (84.9 F)
-17.2 C (1.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Lake Overholser still stand. 1954 holds the most, with 112.
Standing records at Lake Overholser by the year they were set
Year set
Standing records
1952
60
1953
103
1954
112
1955
70
1956
61
1957
41
1958
46
1959
54
1960
50
1961
41
1962
48
1963
68
1964
52
1965
46
1966
59
1967
64
1968
42
1969
47
1970
62
1971
43
1972
54
1973
28
1974
37
1975
36
1976
43
1977
29
1978
41
1979
27
Wettest Day of Each Month
Sep: 165.1 mm (6.5 in)
The wettest day on record for each calendar month at Lake Overholser. The most was 165.1 mm (6.5 in) on 23 September 1970.
Record daily precipitation for each month at Lake Overholser
Month
Record daily precipitation (mm)
Date
Jan
40.9 mm (1.6 in)
26 January 1967
Feb
46.2 mm (1.8 in)
13 February 1978
Mar
47.8 mm (1.9 in)
24 March 1973
Apr
99.1 mm (3.9 in)
30 April 1970
May
83.1 mm (3.3 in)
10 May 1950
Jun
111.8 mm (4.4 in)
24 June 1948
Jul
78.7 mm (3.1 in)
6 July 1979
Aug
106.7 mm (4.2 in)
7 August 1965
Sep
165.1 mm (6.5 in)
23 September 1970
Oct
128.0 mm (5.0 in)
3 October 1955
Nov
147.8 mm (5.8 in)
3 November 1974
Dec
72.9 mm (2.9 in)
24 December 1965
Period of Record Coverage
1952 to 1979
Complete yearUnder 90 percent of days
28 years of record at Lake Overholser, 1952 to 1979. 2 years have data for under 90 percent of days and are left out of rankings: 1952, 1979.
Cooler than the station meanWarmer than the station mean
One stripe for each of 22 complete years at Lake Overholser, 1953 to 1978. Blue stripes are years cooler than the station's own mean of 15.2 C (59.4 F); red stripes are warmer. The coolest year was 1968, at 14.1 C (57.4 F), and the warmest was 1954, at 17.8 C (64.0 F). The strongest colour marks a difference of 2.6 C (4.7 F).
Annual mean temperature at Lake Overholser as warming stripes, 1953 to 1978
Year
Annual mean temperature
Difference from the station mean
1953
16.9 C
+1.69 C
1954
17.8 C
+2.55 C
1955
16.7 C
+1.49 C
1956
16.6 C
+1.33 C
1957
14.6 C
-0.60 C
1958
14.5 C
-0.70 C
1959
14.3 C
-0.92 C
1961
14.2 C
-1.04 C
1962
15.1 C
-0.16 C
1963
15.7 C
+0.50 C
1965
15.6 C
+0.36 C
1966
14.4 C
-0.84 C
1968
14.1 C
-1.13 C
1969
14.7 C
-0.49 C
1970
14.6 C
-0.65 C
1971
14.7 C
-0.56 C
1972
14.5 C
-0.73 C
1974
15.5 C
+0.24 C
1975
14.8 C
-0.46 C
1976
14.9 C
-0.32 C
1977
16.3 C
+1.06 C
1978
14.6 C
-0.62 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
1948 to 1979
Yearly extremes at Lake Overholser: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
43.3 C (109.9 F)
1970
38.9 C (102.0 F)
28
Coldest night (TNn)
-20.0 C (-4.0 F)
1959
-15.6 C (3.9 F)
28
Wettest day (Rx1day)
165.1 mm (6.5 in)
1970
68.6 mm (2.7 in)
32
Wettest five days (Rx5day)
236.5 mm (9.3 in)
1948
102.7 mm (4.0 in)
32
Longest dry spell (CDD)
84 days
1948
34 days
32
Hottest day (TXx)
The hottest day of the year at Lake Overholser, 1948 to 1979. The record is 43.3 C (109.9 F) in 1970, marked on the chart; the median year is 38.9 C (102.0 F).
Hottest day (TXx) at Lake Overholser by year
Year
Hottest day (TXx)
1948
n/a
1949
n/a
1950
n/a
1951
n/a
1952
41.1 C (106.0 F)
1953
41.1 C (106.0 F)
1954
41.7 C (107.1 F)
1955
36.1 C (97.0 F)
1956
41.1 C (106.0 F)
1957
38.9 C (102.0 F)
1958
37.2 C (99.0 F)
1959
36.7 C (98.1 F)
1960
37.8 C (100.0 F)
1961
36.7 C (98.1 F)
1962
38.9 C (102.0 F)
1963
39.4 C (102.9 F)
1964
41.1 C (106.0 F)
1965
38.9 C (102.0 F)
1966
39.4 C (102.9 F)
1967
37.8 C (100.0 F)
1968
37.2 C (99.0 F)
1969
40.6 C (105.1 F)
1970
43.3 C (109.9 F)
1971
38.9 C (102.0 F)
1972
37.8 C (100.0 F)
1973
36.7 C (98.1 F)
1974
41.1 C (106.0 F)
1975
36.7 C (98.1 F)
1976
37.8 C (100.0 F)
1977
40.0 C (104.0 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 Lake Overholser, 1948 to 1979. The record is -20.0 C (-4.0 F) in 1959, marked on the chart; the median year is -15.6 C (3.9 F).
Coldest night (TNn) at Lake Overholser by year
Year
Coldest night (TNn)
1948
n/a
1949
n/a
1950
n/a
1951
n/a
1952
-8.3 C (17.1 F)
1953
-12.8 C (9.0 F)
1954
-15.6 C (3.9 F)
1955
-11.7 C (10.9 F)
1956
-12.8 C (9.0 F)
1957
-12.2 C (10.0 F)
1958
-16.7 C (1.9 F)
1959
-20.0 C (-4.0 F)
1960
-16.1 C (3.0 F)
1961
-13.3 C (8.1 F)
1962
-17.8 C (0.0 F)
1963
-18.3 C (-0.9 F)
1964
-15.0 C (5.0 F)
1965
-12.8 C (9.0 F)
1966
-16.1 C (3.0 F)
1967
-12.2 C (10.0 F)
1968
-18.9 C (-2.0 F)
1969
-18.3 C (-0.9 F)
1970
-15.0 C (5.0 F)
1971
-15.0 C (5.0 F)
1972
-18.3 C (-0.9 F)
1973
-16.7 C (1.9 F)
1974
-14.4 C (6.1 F)
1975
-12.2 C (10.0 F)
1976
-15.6 C (3.9 F)
1977
-17.8 C (0.0 F)
1978
-17.8 C (0.0 F)
1979
-17.8 C (0.0 F)
Wettest day (Rx1day)
The wettest day of the year at Lake Overholser, 1948 to 1979. The record is 165.1 mm (6.5 in) in 1970, marked on the chart; the median year is 68.6 mm (2.7 in).
Wettest day (Rx1day) at Lake Overholser by year
Year
Wettest day (Rx1day)
1948
111.8 mm (4.4 in)
1949
61.2 mm (2.4 in)
1950
83.1 mm (3.3 in)
1951
66.3 mm (2.6 in)
1952
53.1 mm (2.1 in)
1953
61.0 mm (2.4 in)
1954
38.6 mm (1.5 in)
1955
128.0 mm (5.0 in)
1956
54.6 mm (2.1 in)
1957
85.3 mm (3.4 in)
1958
43.2 mm (1.7 in)
1959
85.1 mm (3.4 in)
1960
68.6 mm (2.7 in)
1961
135.6 mm (5.3 in)
1962
81.0 mm (3.2 in)
1963
71.6 mm (2.8 in)
1964
68.1 mm (2.7 in)
1965
106.7 mm (4.2 in)
1966
48.3 mm (1.9 in)
1967
65.3 mm (2.6 in)
1968
53.6 mm (2.1 in)
1969
63.2 mm (2.5 in)
1970
165.1 mm (6.5 in)
1971
61.0 mm (2.4 in)
1972
56.4 mm (2.2 in)
1973
69.1 mm (2.7 in)
1974
147.8 mm (5.8 in)
1975
68.6 mm (2.7 in)
1976
48.8 mm (1.9 in)
1977
79.2 mm (3.1 in)
1978
68.6 mm (2.7 in)
1979
78.7 mm (3.1 in)
Wettest five days (Rx5day)
The wettest five days of the year at Lake Overholser, 1948 to 1979. The record is 236.5 mm (9.3 in) in 1948, marked on the chart; the median year is 102.7 mm (4.0 in).
Wettest five days (Rx5day) at Lake Overholser by year
Year
Wettest five days (Rx5day)
1948
236.5 mm (9.3 in)
1949
104.1 mm (4.1 in)
1950
133.4 mm (5.3 in)
1951
80.8 mm (3.2 in)
1952
76.5 mm (3.0 in)
1953
83.0 mm (3.3 in)
1954
69.8 mm (2.7 in)
1955
227.5 mm (9.0 in)
1956
63.2 mm (2.5 in)
1957
126.2 mm (5.0 in)
1958
118.3 mm (4.7 in)
1959
162.3 mm (6.4 in)
1960
89.4 mm (3.5 in)
1961
136.1 mm (5.4 in)
1962
139.9 mm (5.5 in)
1963
124.7 mm (4.9 in)
1964
71.1 mm (2.8 in)
1965
134.4 mm (5.3 in)
1966
80.6 mm (3.2 in)
1967
95.7 mm (3.8 in)
1968
75.9 mm (3.0 in)
1969
89.6 mm (3.5 in)
1970
212.6 mm (8.4 in)
1971
74.7 mm (2.9 in)
1972
95.5 mm (3.8 in)
1973
101.3 mm (4.0 in)
1974
201.7 mm (7.9 in)
1975
96.9 mm (3.8 in)
1976
79.2 mm (3.1 in)
1977
148.3 mm (5.8 in)
1978
127.6 mm (5.0 in)
1979
158.5 mm (6.2 in)
Longest dry spell (CDD)
The longest dry spell of the year at Lake Overholser, 1948 to 1979. The record is 84 days in 1948, marked on the chart; the median year is 34 days.
Longest dry spell (CDD) at Lake Overholser by year
Year
Longest dry spell (CDD)
1948
84 days
1949
38 days
1950
30 days
1951
29 days
1952
51 days
1953
33 days
1954
37 days
1955
56 days
1956
33 days
1957
36 days
1958
32 days
1959
40 days
1960
25 days
1961
27 days
1962
26 days
1963
36 days
1964
29 days
1965
34 days
1966
41 days
1967
45 days
1968
25 days
1969
27 days
1970
35 days
1971
52 days
1972
37 days
1973
21 days
1974
50 days
1975
26 days
1976
35 days
1977
25 days
1978
34 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
22 years with a frost
Across 22 years with a frost, the median last spring frost at Lake Overholser falls on 1 April and the median first autumn frost on 9 November, which leaves a median of 219 days between them.
Frost dates and growing season at Lake Overholser
Measure
Median, all years
Earliest period
Recent period (1953 to 1978)
Recent against earliest
Fitted trend
Last spring frost
1 April
n/a
1 April
n/a
n/a
First autumn frost
9 November
n/a
9 November
n/a
n/a
Growing days
219 days
n/a
219 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
30 years, 1948 to 1978
A day with at least 69.1 mm (2.7 in) of rain is expected about once in 2 years. A day with at least 210.7 mm (8.3 in) of rain is expected about once in 100 years.
Rainfall return levels at Lake Overholser: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
69.1 mm (2.7 in)
5 years
95.0 mm (3.7 in)
10 years
116.2 mm (4.6 in)
25 years
148.5 mm (5.8 in)
50 years
177.3 mm (7.0 in)
Longer than the 30 years of record
100 years
210.7 mm (8.3 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 1948 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: 165.1 mm (6.5 in) in 1970; 147.8 mm (5.8 in) in 1974; 135.6 mm (5.3 in) in 1961.
Download the Data
Data for Lake Overholser standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Lake Overholser 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.