Record envelope, standing records and threshold days for Senecaville Lake (USC00337559), Ohio, United States, with 76 years of record.
Key Facts for Senecaville Lake
Senecaville Lake (USC00337559) is a weather station in Ohio, United States at 39.92 latitude and -81.43 longitude, 267 m (875 ft) above sea level.
The station reports from 1939 to 2014, 76 years of record.
1,464 records set at Senecaville Lake still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Senecaville Lake set a daily record low maximum temperature of -14.4 C (6.1 F) on 29 January 2014.
About the Station
Location: Ohio, United States, 39.92 latitude, -81.43 longitude.
Elevation: 267 m (875 ft).
Period of record: 1939 to 2014, 76 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 Senecaville Lake. 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 Senecaville Lake, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
22.8 C (73.0 F)
-34.4 C (-29.9 F)
n/a
n/a
Feb
22.8 C (73.0 F)
-30.6 C (-23.1 F)
n/a
n/a
Mar
30.0 C (86.0 F)
-22.2 C (-8.0 F)
n/a
n/a
Apr
31.7 C (89.1 F)
-15.6 C (3.9 F)
n/a
n/a
May
33.3 C (91.9 F)
-6.7 C (19.9 F)
n/a
n/a
Jun
37.2 C (99.0 F)
-0.6 C (30.9 F)
n/a
n/a
Jul
37.8 C (100.0 F)
3.3 C (37.9 F)
n/a
n/a
Aug
37.8 C (100.0 F)
-0.6 C (30.9 F)
n/a
n/a
Sep
38.3 C (100.9 F)
-3.9 C (25.0 F)
n/a
n/a
Oct
31.7 C (89.1 F)
-10.6 C (12.9 F)
n/a
n/a
Nov
28.3 C (82.9 F)
-22.2 C (-8.0 F)
n/a
n/a
Dec
25.0 C (77.0 F)
-26.1 C (-15.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Senecaville Lake still stand. 1963 holds the most, with 54.
Standing records at Senecaville Lake by the year they were set
Year set
Standing records
1939
30
1940
44
1941
41
1942
37
1943
27
1944
41
1945
35
1946
36
1947
38
1948
24
1949
28
1950
40
1951
33
1952
43
1953
36
1954
36
1955
30
1956
29
1957
27
1958
23
1959
30
1960
28
1961
23
1962
36
1963
54
1964
36
1965
27
1966
24
1967
31
1968
20
1969
21
1970
23
1971
14
1972
22
1973
22
1974
19
1975
28
1976
40
1977
38
1978
26
1979
38
1980
24
1981
11
1982
30
1983
22
1984
26
1985
16
1986
21
1987
1
2011
5
2012
14
2013
14
2014
2
All-Time Record Progression
3 new records
3 all-time records were set at Senecaville Lake between 18 January 1977 and 21 January 1984. Each dot is a new record.
When Senecaville Lake set new all-time records
Date
Kind
Detail
1977-01-18
Record low maximum temperature
Record low maximum temperature -19.4 C (-2.9 F)
1980-08-11
Record daily precipitation
Record daily precipitation 129.8 mm (5.1 in)
1984-01-21
Record low minimum temperature
Record low minimum temperature -34.4 C (-29.9 F)
Wettest Day of Each Month
Aug: 129.8 mm (5.1 in)
The wettest day on record for each calendar month at Senecaville Lake. The most was 129.8 mm (5.1 in) on 11 August 1980.
Record daily precipitation for each month at Senecaville Lake
Month
Record daily precipitation (mm)
Date
Jan
49.3 mm (1.9 in)
27 January 1952
Feb
53.8 mm (2.1 in)
25 February 1965
Mar
62.7 mm (2.5 in)
5 March 1963
Apr
55.9 mm (2.2 in)
19 April 1940
May
57.7 mm (2.3 in)
24 May 1968
Jun
125.7 mm (4.9 in)
24 June 1956
Jul
64.3 mm (2.5 in)
9 July 1970
Aug
129.8 mm (5.1 in)
11 August 1980
Sep
58.4 mm (2.3 in)
12 September 1971
Oct
76.2 mm (3.0 in)
5 October 1941
Nov
76.2 mm (3.0 in)
27 November 1985
Dec
46.2 mm (1.8 in)
9 December 1978
Period of Record Coverage
1939 to 2014
Complete yearUnder 90 percent of days
53 years of record at Senecaville Lake, 1939 to 2014. 7 years have data for under 90 percent of days and are left out of rankings: 1939, 1981, 1987, 2011, 2012, 2013, 2014.
Cooler than the station meanWarmer than the station mean
One stripe for each of 43 complete years at Senecaville Lake, 1940 to 1986. Blue stripes are years cooler than the station's own mean of 10.5 C (50.8 F); red stripes are warmer. The coolest year was 1978, at 8.2 C (46.8 F), and the warmest was 1953, at 12.5 C (54.5 F). The strongest colour marks a difference of 2.3 C (4.1 F).
Annual mean temperature at Senecaville Lake as warming stripes, 1940 to 1986
Year
Annual mean temperature
Difference from the station mean
1940
9.6 C
-0.81 C
1941
11.0 C
+0.58 C
1942
10.6 C
+0.18 C
1943
10.6 C
+0.15 C
1944
11.6 C
+1.10 C
1945
11.1 C
+0.63 C
1946
11.9 C
+1.40 C
1947
10.7 C
+0.21 C
1948
11.2 C
+0.77 C
1949
12.5 C
+2.03 C
1950
10.9 C
+0.45 C
1951
11.2 C
+0.76 C
1952
12.2 C
+1.70 C
1953
12.5 C
+2.07 C
1954
11.6 C
+1.19 C
1955
11.2 C
+0.78 C
1956
11.1 C
+0.65 C
1957
10.9 C
+0.42 C
1958
9.3 C
-1.15 C
1959
11.1 C
+0.60 C
1960
9.6 C
-0.81 C
1961
10.2 C
-0.29 C
1962
9.6 C
-0.81 C
1963
8.3 C
-2.19 C
1964
9.5 C
-0.92 C
1965
9.5 C
-0.95 C
1967
9.7 C
-0.80 C
1968
9.2 C
-1.25 C
1969
9.5 C
-1.00 C
1970
10.5 C
0.00 C
1971
10.8 C
+0.30 C
1972
10.3 C
-0.18 C
1973
11.7 C
+1.29 C
1974
10.8 C
+0.31 C
1975
11.7 C
+1.23 C
1977
9.5 C
-0.91 C
1978
8.2 C
-2.24 C
1979
8.4 C
-2.02 C
1980
8.2 C
-2.22 C
1983
10.4 C
-0.02 C
1984
10.3 C
-0.17 C
1985
9.9 C
-0.52 C
1986
11.0 C
+0.52 C
The annual mean temperature here has fallen by 0.4 C (0.1 to 0.6) per decade over 1940 to 1986. In Fahrenheit: 0.6 F (0.2 to 1.1) per decade. The slope is a straight line fitted to 43 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Senecaville Lake
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.4 C (-0.6 to -0.1) per decade
-0.6 F (-1.1 to -0.2) per decade
1940 to 1986
43
Fall
Mean daily maximum
-0.29 C (-0.54 to -0.04) per decade
-0.5 F (-1.0 to -0.1) per decade
1940 to 1986
43
Fall
Mean daily minimum
-0.4 C (-0.7 to -0.1) per decade
-0.8 F (-1.3 to -0.3) per decade
1940 to 1986
43
Fall
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 2014
Yearly extremes at Senecaville Lake: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
38.3 C (100.9 F)
1953
34.4 C (93.9 F)
53
Coldest night (TNn)
-34.4 C (-29.9 F)
1984
-22.2 C (-8.0 F)
53
Wettest day (Rx1day)
129.8 mm (5.1 in)
1980
49.0 mm (1.9 in)
53
Wettest five days (Rx5day)
186.7 mm (7.4 in)
1963
82.3 mm (3.2 in)
52
Longest dry spell (CDD)
43 days
1963
16 days
53
Hottest day (TXx)
The hottest day of the year at Senecaville Lake, 1939 to 2014. The record is 38.3 C (100.9 F) in 1953, marked on the chart; the median year is 34.4 C (93.9 F).
Hottest day (TXx) at Senecaville Lake by year
Year
Hottest day (TXx)
1939
36.7 C (98.1 F)
1940
35.0 C (95.0 F)
1941
36.1 C (97.0 F)
1942
34.4 C (93.9 F)
1943
35.6 C (96.1 F)
1944
37.8 C (100.0 F)
1945
34.4 C (93.9 F)
1946
35.6 C (96.1 F)
1947
35.0 C (95.0 F)
1948
37.8 C (100.0 F)
1949
34.4 C (93.9 F)
1950
32.8 C (91.0 F)
1951
33.9 C (93.0 F)
1952
36.1 C (97.0 F)
1953
38.3 C (100.9 F)
1954
37.2 C (99.0 F)
1955
37.8 C (100.0 F)
1956
33.3 C (91.9 F)
1957
35.6 C (96.1 F)
1958
32.2 C (90.0 F)
1959
34.4 C (93.9 F)
1960
32.8 C (91.0 F)
1961
33.3 C (91.9 F)
1962
36.7 C (98.1 F)
1963
33.3 C (91.9 F)
1964
34.4 C (93.9 F)
1965
36.7 C (98.1 F)
1966
36.7 C (98.1 F)
1967
33.9 C (93.0 F)
1968
34.4 C (93.9 F)
1969
33.9 C (93.0 F)
1970
34.4 C (93.9 F)
1971
36.7 C (98.1 F)
1972
33.3 C (91.9 F)
1973
36.1 C (97.0 F)
1974
32.2 C (90.0 F)
1975
34.4 C (93.9 F)
1976
33.3 C (91.9 F)
1977
33.9 C (93.0 F)
1978
32.2 C (90.0 F)
1979
29.4 C (84.9 F)
1980
33.3 C (91.9 F)
1981
33.3 C (91.9 F)
1982
32.8 C (91.0 F)
1983
35.6 C (96.1 F)
1984
33.9 C (93.0 F)
1985
33.3 C (91.9 F)
1986
33.3 C (91.9 F)
1987
34.4 C (93.9 F)
2011
34.4 C (93.9 F)
2012
37.8 C (100.0 F)
2013
32.8 C (91.0 F)
2014
13.3 C (55.9 F)
Coldest night (TNn)
The coldest night of the year at Senecaville Lake, 1939 to 2014. The record is -34.4 C (-29.9 F) in 1984, marked on the chart; the median year is -22.2 C (-8.0 F).
Coldest night (TNn) at Senecaville Lake by year
Year
Coldest night (TNn)
1939
-10.6 C (12.9 F)
1940
-24.4 C (-11.9 F)
1941
-14.4 C (6.1 F)
1942
-28.3 C (-18.9 F)
1943
-22.2 C (-8.0 F)
1944
-23.3 C (-9.9 F)
1945
-23.3 C (-9.9 F)
1946
-20.6 C (-5.1 F)
1947
-21.1 C (-6.0 F)
1948
-30.0 C (-22.0 F)
1949
-16.1 C (3.0 F)
1950
-26.1 C (-15.0 F)
1951
-23.9 C (-11.0 F)
1952
-15.6 C (3.9 F)
1953
-17.8 C (0.0 F)
1954
-18.3 C (-0.9 F)
1955
-18.9 C (-2.0 F)
1956
-17.8 C (0.0 F)
1957
-21.7 C (-7.1 F)
1958
-22.2 C (-8.0 F)
1959
-22.2 C (-8.0 F)
1960
-21.7 C (-7.1 F)
1961
-27.2 C (-17.0 F)
1962
-24.4 C (-11.9 F)
1963
-31.1 C (-24.0 F)
1964
-20.6 C (-5.1 F)
1965
-27.8 C (-18.0 F)
1966
-23.3 C (-9.9 F)
1967
-22.2 C (-8.0 F)
1968
-27.2 C (-17.0 F)
1969
-18.9 C (-2.0 F)
1970
-21.1 C (-6.0 F)
1971
-26.1 C (-15.0 F)
1972
-24.4 C (-11.9 F)
1973
-17.2 C (1.0 F)
1974
-16.7 C (1.9 F)
1975
-16.1 C (3.0 F)
1976
-24.4 C (-11.9 F)
1977
-30.6 C (-23.1 F)
1978
-26.7 C (-16.1 F)
1979
-27.8 C (-18.0 F)
1980
-21.1 C (-6.0 F)
1981
-26.7 C (-16.1 F)
1982
-29.4 C (-20.9 F)
1983
-23.3 C (-9.9 F)
1984
-34.4 C (-29.9 F)
1985
-29.4 C (-20.9 F)
1986
-20.6 C (-5.1 F)
1987
-18.9 C (-2.0 F)
2011
-25.0 C (-13.0 F)
2012
-15.0 C (5.0 F)
2013
-16.7 C (1.9 F)
2014
-28.9 C (-20.0 F)
Wettest day (Rx1day)
The wettest day of the year at Senecaville Lake, 1939 to 2014. The record is 129.8 mm (5.1 in) in 1980, marked on the chart; the median year is 49.0 mm (1.9 in).
Wettest day (Rx1day) at Senecaville Lake by year
Year
Wettest day (Rx1day)
1939
55.4 mm (2.2 in)
1940
57.9 mm (2.3 in)
1941
76.2 mm (3.0 in)
1942
61.0 mm (2.4 in)
1943
53.1 mm (2.1 in)
1944
78.0 mm (3.1 in)
1945
48.3 mm (1.9 in)
1946
49.5 mm (1.9 in)
1947
43.2 mm (1.7 in)
1948
35.6 mm (1.4 in)
1949
47.8 mm (1.9 in)
1950
37.6 mm (1.5 in)
1951
43.4 mm (1.7 in)
1952
49.3 mm (1.9 in)
1953
30.5 mm (1.2 in)
1954
59.9 mm (2.4 in)
1955
36.1 mm (1.4 in)
1956
125.7 mm (4.9 in)
1957
43.2 mm (1.7 in)
1958
41.9 mm (1.6 in)
1959
41.1 mm (1.6 in)
1960
49.5 mm (1.9 in)
1961
64.0 mm (2.5 in)
1962
49.0 mm (1.9 in)
1963
125.7 mm (4.9 in)
1964
62.0 mm (2.4 in)
1965
53.8 mm (2.1 in)
1966
33.5 mm (1.3 in)
1967
30.5 mm (1.2 in)
1968
57.7 mm (2.3 in)
1969
47.2 mm (1.9 in)
1970
64.3 mm (2.5 in)
1971
58.4 mm (2.3 in)
1972
42.2 mm (1.7 in)
1973
32.8 mm (1.3 in)
1974
46.0 mm (1.8 in)
1975
67.3 mm (2.6 in)
1976
52.1 mm (2.1 in)
1977
46.0 mm (1.8 in)
1978
46.2 mm (1.8 in)
1979
35.8 mm (1.4 in)
1980
129.8 mm (5.1 in)
1981
59.4 mm (2.3 in)
1982
44.7 mm (1.8 in)
1983
57.7 mm (2.3 in)
1984
56.1 mm (2.2 in)
1985
76.2 mm (3.0 in)
1986
38.4 mm (1.5 in)
1987
66.5 mm (2.6 in)
2011
47.8 mm (1.9 in)
2012
36.3 mm (1.4 in)
2013
33.8 mm (1.3 in)
2014
9.1 mm (0.36 in)
Wettest five days (Rx5day)
The wettest five days of the year at Senecaville Lake, 1939 to 2014. The record is 186.7 mm (7.4 in) in 1963, marked on the chart; the median year is 82.3 mm (3.2 in).
Wettest five days (Rx5day) at Senecaville Lake by year
Year
Wettest five days (Rx5day)
1939
77.0 mm (3.0 in)
1940
94.9 mm (3.7 in)
1941
135.9 mm (5.4 in)
1942
69.9 mm (2.8 in)
1943
55.9 mm (2.2 in)
1944
78.0 mm (3.1 in)
1945
109.3 mm (4.3 in)
1946
85.1 mm (3.4 in)
1947
79.8 mm (3.1 in)
1948
94.1 mm (3.7 in)
1949
91.5 mm (3.6 in)
1950
100.1 mm (3.9 in)
1951
116.7 mm (4.6 in)
1952
78.0 mm (3.1 in)
1953
59.0 mm (2.3 in)
1954
82.8 mm (3.3 in)
1955
61.7 mm (2.4 in)
1956
167.9 mm (6.6 in)
1957
69.1 mm (2.7 in)
1958
79.5 mm (3.1 in)
1959
60.5 mm (2.4 in)
1960
54.1 mm (2.1 in)
1961
87.4 mm (3.4 in)
1962
73.8 mm (2.9 in)
1963
186.7 mm (7.4 in)
1964
113.5 mm (4.5 in)
1965
67.8 mm (2.7 in)
1966
61.6 mm (2.4 in)
1967
62.2 mm (2.4 in)
1968
92.0 mm (3.6 in)
1969
81.8 mm (3.2 in)
1970
78.2 mm (3.1 in)
1971
110.2 mm (4.3 in)
1972
67.0 mm (2.6 in)
1973
93.0 mm (3.7 in)
1974
122.7 mm (4.8 in)
1975
98.3 mm (3.9 in)
1976
95.0 mm (3.7 in)
1977
89.7 mm (3.5 in)
1978
63.2 mm (2.5 in)
1979
71.9 mm (2.8 in)
1980
154.7 mm (6.1 in)
1981
104.9 mm (4.1 in)
1982
57.3 mm (2.3 in)
1983
91.6 mm (3.6 in)
1984
59.6 mm (2.3 in)
1985
112.8 mm (4.4 in)
1986
99.1 mm (3.9 in)
1987
88.0 mm (3.5 in)
2011
19.8 mm (0.8 in)
2012
71.6 mm (2.8 in)
2013
20.0 mm (0.8 in)
2014
n/a
Longest dry spell (CDD)
The longest dry spell of the year at Senecaville Lake, 1939 to 2014. The record is 43 days in 1963, marked on the chart; the median year is 16 days.
Longest dry spell (CDD) at Senecaville Lake by year
Year
Longest dry spell (CDD)
1939
17 days
1940
14 days
1941
24 days
1942
16 days
1943
27 days
1944
15 days
1945
22 days
1946
23 days
1947
17 days
1948
16 days
1949
18 days
1950
15 days
1951
19 days
1952
23 days
1953
23 days
1954
13 days
1955
27 days
1956
14 days
1957
15 days
1958
12 days
1959
18 days
1960
12 days
1961
22 days
1962
13 days
1963
43 days
1964
22 days
1965
15 days
1966
21 days
1967
25 days
1968
12 days
1969
35 days
1970
15 days
1971
16 days
1972
19 days
1973
15 days
1974
15 days
1975
15 days
1976
26 days
1977
16 days
1978
14 days
1979
15 days
1980
12 days
1981
16 days
1982
22 days
1983
22 days
1984
14 days
1985
23 days
1986
14 days
1987
15 days
2011
5 days
2012
4 days
2013
4 days
2014
3 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
43 years with a frost
Across 43 years with a frost, the median last spring frost at Senecaville Lake falls on 6 May and the median first autumn frost on 1 October, which leaves a median of 149 days between them.
Fitted over all years, the growing season changes by +0.5 days per decade at this station.
Frost dates and growing season at Senecaville Lake
Measure
Median, all years
Earliest period
Recent period (1953 to 1986)
Recent against earliest
Fitted trend
Last spring frost
6 May
n/a
7 May
n/a
+0.1 days per decade
First autumn frost
1 October
n/a
2 October
n/a
+0.7 days per decade
Growing days
149 days
n/a
149 days
n/a
+0.5 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
47 years, 1940 to 1986
A day with at least 49.1 mm (1.9 in) of rain is expected about once in 2 years. A day with at least 143.9 mm (5.7 in) of rain is expected about once in 100 years.
Rainfall return levels at Senecaville Lake: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
49.1 mm (1.9 in)
5 years
65.7 mm (2.6 in)
10 years
79.6 mm (3.1 in)
25 years
101.2 mm (4.0 in)
50 years
120.8 mm (4.8 in)
Longer than the 47 years of record
100 years
143.9 mm (5.7 in)
Longer than the 47 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, 47 years of values from 1940 to 1986.
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: 129.8 mm (5.1 in) in 1980; 125.7 mm (4.9 in) in 1956; 125.7 mm (4.9 in) in 1963.
Station Changes
1 suspected
One change was suspected in the annual mean temperature of Senecaville Lake, at 1957. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1957 ran 0.6 C (1.0 F) lower than in the years before (likely change).
Suspected changes in the annual mean temperature at Senecaville Lake, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1957
-0.6
-1.0
likely
5
Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.
Download the Data
Data for Senecaville Lake standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Senecaville Lake 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.