Record envelope, standing records and threshold days for Rough Rvr Lake (USC00156988), Kentucky, United States, with 62 years of record.
Key Facts for Rough Rvr Lake
Rough Rvr Lake (USC00156988) is a weather station in Kentucky, United States at 37.62 latitude and -86.50 longitude, 171 m (560 ft) above sea level.
The station reports from 1964 to 2025, 62 years of record.
1,464 records set at Rough Rvr Lake still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Rough Rvr Lake set a daily record high minimum temperature of 21.1 C (70.0 F) on 20 May 2025.
About the Station
Location: Kentucky, United States, 37.62 latitude, -86.50 longitude.
Elevation: 171 m (560 ft).
Period of record: 1964 to 2025, 62 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
5 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 Rough Rvr Lake. The lines show the 2026 daily maximum and minimum. 5 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Rough Rvr Lake, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
24.4 C (75.9 F)
-32.8 C (-27.0 F)
16.1 C (61.0 F)
-17.2 C (1.0 F)
Feb
29.4 C (84.9 F)
-25.6 C (-14.1 F)
23.3 C (73.9 F)
-16.7 C (1.9 F)
Mar
31.1 C (88.0 F)
-20.6 C (-5.1 F)
28.9 C (84.0 F)
-8.9 C (16.0 F)
Apr
32.8 C (91.0 F)
-8.9 C (16.0 F)
30.6 C (87.1 F)
-3.3 C (26.1 F)
May
35.0 C (95.0 F)
-2.8 C (27.0 F)
30.6 C (87.1 F)
7.2 C (45.0 F)
Jun
43.3 C (109.9 F)
2.8 C (37.0 F)
32.2 C (90.0 F)
9.4 C (48.9 F)
Jul
43.3 C (109.9 F)
5.0 C (41.0 F)
n/a
n/a
Aug
42.8 C (109.0 F)
3.3 C (37.9 F)
n/a
n/a
Sep
40.6 C (105.1 F)
-1.1 C (30.0 F)
n/a
n/a
Oct
37.2 C (99.0 F)
-7.2 C (19.0 F)
n/a
n/a
Nov
31.1 C (88.0 F)
-16.7 C (1.9 F)
n/a
n/a
Dec
24.4 C (75.9 F)
-27.8 C (-18.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Rough Rvr Lake still stand. 1983 holds the most, with 45.
Standing records at Rough Rvr Lake by the year they were set
Year set
Standing records
1964
22
1965
24
1966
33
1967
31
1968
20
1969
18
1970
27
1971
21
1972
16
1973
9
1974
25
1975
16
1976
26
1977
35
1978
15
1979
28
1980
27
1981
14
1982
13
1983
45
1984
26
1985
28
1986
35
1987
22
1988
35
1989
39
1990
27
1991
30
1992
26
1993
21
1994
13
1995
15
1996
31
1997
23
1998
26
1999
32
2000
27
2001
21
2002
20
2003
14
2004
17
2005
21
2006
19
2007
30
2008
14
2009
17
2010
34
2011
36
2012
41
2013
15
2014
13
2015
32
2016
37
2017
20
2018
33
2019
28
2020
17
2021
17
2022
9
2023
20
2024
12
2025
6
All-Time Record Progression
10 new records
10 all-time records were set at Rough Rvr Lake between 17 January 1994 and 5 March 2015. Each dot is a new record.
When Rough Rvr Lake set new all-time records
Date
Kind
Detail
1994-01-17
Record daily snowfall
Record daily snowfall 20.3 cm (8.0 in)
1994-01-20
Record low minimum temperature
Record low minimum temperature -32.8 C (-27.0 F)
1997-03-02
Record daily precipitation
Record daily precipitation 188.0 mm (7.4 in)
1999-07-31
Record high maximum temperature
Record high maximum temperature 41.7 C (107.1 F)
2004-12-23
Record daily snowfall
Record daily snowfall 30.5 cm (12.0 in)
2010-08-13
Record high maximum temperature
Record high maximum temperature 42.8 C (109.0 F)
2011-07-12
Record high minimum temperature
Record high minimum temperature 25.6 C (78.1 F)
2012-06-30
Record high maximum temperature
Record high maximum temperature 43.3 C (109.9 F)
2015-03-05
Record daily snowfall
Record daily snowfall 43.2 cm (17.0 in)
2015-03-05
Record snow depth
Record snow depth 43.2 cm (17.0 in)
Wettest Day of Each Month
Mar: 188.0 mm (7.4 in)
The wettest day on record for each calendar month at Rough Rvr Lake. The most was 188.0 mm (7.4 in) on 2 March 1997.
Record daily precipitation for each month at Rough Rvr Lake
Month
Record daily precipitation (mm)
Date
Jan
110.5 mm (4.4 in)
3 January 2023
Feb
141.5 mm (5.6 in)
16 February 1990
Mar
188.0 mm (7.4 in)
2 March 1997
Apr
132.6 mm (5.2 in)
4 April 2008
May
136.4 mm (5.4 in)
18 May 1995
Jun
99.1 mm (3.9 in)
8 June 1979
Jul
95.5 mm (3.8 in)
26 July 2001
Aug
80.0 mm (3.1 in)
22 August 1979
Sep
162.6 mm (6.4 in)
27 September 2002
Oct
115.1 mm (4.5 in)
23 October 2007
Nov
100.1 mm (3.9 in)
1 November 2018
Dec
90.2 mm (3.6 in)
26 December 1987
Period of Record Coverage
1964 to 2025
Complete yearUnder 90 percent of days
62 years of record at Rough Rvr Lake, 1964 to 2025. 2 years have data for under 90 percent of days and are left out of rankings: 1964, 2025.
Cooler than the station meanWarmer than the station mean
One stripe for each of 55 complete years at Rough Rvr Lake, 1965 to 2024. Blue stripes are years cooler than the station's own mean of 12.9 C (55.3 F); red stripes are warmer. The coolest year was 1992, at 11.4 C (52.4 F), and the warmest was 2016, at 14.9 C (58.8 F). The strongest colour marks a difference of 2.0 C (3.6 F).
Annual mean temperature at Rough Rvr Lake as warming stripes, 1965 to 2024
Year
Annual mean temperature
Difference from the station mean
1965
13.4 C
+0.50 C
1966
12.0 C
-0.96 C
1967
12.6 C
-0.37 C
1968
12.4 C
-0.56 C
1969
12.4 C
-0.48 C
1970
12.8 C
-0.14 C
1971
13.2 C
+0.26 C
1972
12.8 C
-0.09 C
1973
13.7 C
+0.76 C
1975
13.3 C
+0.35 C
1976
11.8 C
-1.14 C
1977
12.3 C
-0.65 C
1978
11.4 C
-1.49 C
1979
11.4 C
-1.50 C
1980
12.0 C
-0.97 C
1983
12.6 C
-0.28 C
1984
12.4 C
-0.50 C
1985
12.0 C
-0.97 C
1986
12.6 C
-0.32 C
1987
12.5 C
-0.42 C
1988
11.8 C
-1.11 C
1989
11.9 C
-0.98 C
1990
13.3 C
+0.34 C
1991
13.1 C
+0.19 C
1992
11.4 C
-1.57 C
1993
12.1 C
-0.86 C
1994
12.3 C
-0.60 C
1995
12.3 C
-0.63 C
1996
11.7 C
-1.25 C
1997
11.8 C
-1.16 C
1998
13.7 C
+0.75 C
1999
13.1 C
+0.18 C
2000
12.0 C
-0.94 C
2001
12.5 C
-0.43 C
2002
13.1 C
+0.18 C
2003
12.6 C
-0.31 C
2004
13.3 C
+0.34 C
2005
13.5 C
+0.59 C
2006
13.7 C
+0.74 C
2007
14.2 C
+1.25 C
2008
12.7 C
-0.20 C
2011
14.0 C
+1.10 C
2012
14.8 C
+1.91 C
2013
12.6 C
-0.30 C
2014
12.6 C
-0.37 C
2015
14.0 C
+1.10 C
2016
14.9 C
+1.98 C
2017
14.6 C
+1.63 C
2018
13.8 C
+0.90 C
2019
14.0 C
+1.10 C
2020
13.7 C
+0.79 C
2021
14.0 C
+1.05 C
2022
13.4 C
+0.43 C
2023
14.3 C
+1.34 C
2024
14.6 C
+1.70 C
The annual mean temperature here has risen by 0.3 C (0.2 to 0.4) per decade over 1965 to 2024. In Fahrenheit: 0.6 F (0.3 to 0.8) per decade. The slope is a straight line fitted to 55 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Rough Rvr Lake
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.3 C (0.2 to 0.4) per decade
0.6 F (0.3 to 0.8) per decade
1965 to 2024
55
Rise
Mean daily maximum
0.4 C (0.3 to 0.5) per decade
0.7 F (0.5 to 0.9) per decade
1965 to 2024
55
Rise
Mean daily minimum
0.2 C (0.1 to 0.4) per decade
0.4 F (0.1 to 0.7) per decade
1965 to 2024
55
Rise
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 2025
Yearly extremes at Rough Rvr Lake: 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)
2012
36.7 C (98.1 F)
62
Coldest night (TNn)
-32.8 C (-27.0 F)
1994
-19.1 C (-2.5 F)
62
Wettest day (Rx1day)
188.0 mm (7.4 in)
1997
78.0 mm (3.1 in)
62
Wettest five days (Rx5day)
278.2 mm (11.0 in)
1995
123.7 mm (4.9 in)
62
Longest dry spell (CDD)
41 days
1999
19 days
62
Hottest day (TXx)
The hottest day of the year at Rough Rvr Lake, 1964 to 2025. The record is 43.3 C (109.9 F) in 2012, marked on the chart; the median year is 36.7 C (98.1 F).
Hottest day (TXx) at Rough Rvr Lake by year
Year
Hottest day (TXx)
1964
37.2 C (99.0 F)
1965
37.2 C (99.0 F)
1966
38.9 C (102.0 F)
1967
34.4 C (93.9 F)
1968
36.1 C (97.0 F)
1969
36.7 C (98.1 F)
1970
36.7 C (98.1 F)
1971
37.2 C (99.0 F)
1972
35.0 C (95.0 F)
1973
35.0 C (95.0 F)
1974
33.9 C (93.0 F)
1975
36.1 C (97.0 F)
1976
36.1 C (97.0 F)
1977
35.6 C (96.1 F)
1978
35.0 C (95.0 F)
1979
33.9 C (93.0 F)
1980
38.9 C (102.0 F)
1981
33.9 C (93.0 F)
1982
33.3 C (91.9 F)
1983
40.0 C (104.0 F)
1984
35.0 C (95.0 F)
1985
35.6 C (96.1 F)
1986
36.7 C (98.1 F)
1987
37.8 C (100.0 F)
1988
40.6 C (105.1 F)
1989
34.4 C (93.9 F)
1990
37.8 C (100.0 F)
1991
37.2 C (99.0 F)
1992
33.9 C (93.0 F)
1993
36.7 C (98.1 F)
1994
36.7 C (98.1 F)
1995
37.2 C (99.0 F)
1996
36.7 C (98.1 F)
1997
38.9 C (102.0 F)
1998
37.2 C (99.0 F)
1999
41.7 C (107.1 F)
2000
36.7 C (98.1 F)
2001
36.7 C (98.1 F)
2002
38.9 C (102.0 F)
2003
35.6 C (96.1 F)
2004
33.9 C (93.0 F)
2005
38.9 C (102.0 F)
2006
36.1 C (97.0 F)
2007
39.4 C (102.9 F)
2008
35.6 C (96.1 F)
2009
35.6 C (96.1 F)
2010
42.8 C (109.0 F)
2011
40.6 C (105.1 F)
2012
43.3 C (109.9 F)
2013
36.1 C (97.0 F)
2014
36.7 C (98.1 F)
2015
35.6 C (96.1 F)
2016
37.8 C (100.0 F)
2017
37.2 C (99.0 F)
2018
36.7 C (98.1 F)
2019
37.8 C (100.0 F)
2020
35.6 C (96.1 F)
2021
36.7 C (98.1 F)
2022
38.9 C (102.0 F)
2023
36.7 C (98.1 F)
2024
38.9 C (102.0 F)
2025
32.2 C (90.0 F)
Coldest night (TNn)
The coldest night of the year at Rough Rvr Lake, 1964 to 2025. The record is -32.8 C (-27.0 F) in 1994, marked on the chart; the median year is -19.1 C (-2.5 F).
Coldest night (TNn) at Rough Rvr Lake by year
Year
Coldest night (TNn)
1964
-15.6 C (3.9 F)
1965
-22.8 C (-9.0 F)
1966
-24.4 C (-11.9 F)
1967
-17.2 C (1.0 F)
1968
-19.4 C (-2.9 F)
1969
-16.7 C (1.9 F)
1970
-24.4 C (-11.9 F)
1971
-20.6 C (-5.1 F)
1972
-22.8 C (-9.0 F)
1973
-15.0 C (5.0 F)
1974
-11.7 C (10.9 F)
1975
-13.9 C (7.0 F)
1976
-20.0 C (-4.0 F)
1977
-29.4 C (-20.9 F)
1978
-21.7 C (-7.1 F)
1979
-22.2 C (-8.0 F)
1980
-19.4 C (-2.9 F)
1981
-22.8 C (-9.0 F)
1982
-26.7 C (-16.1 F)
1983
-22.8 C (-9.0 F)
1984
-27.2 C (-17.0 F)
1985
-28.3 C (-18.9 F)
1986
-19.4 C (-2.9 F)
1987
-20.6 C (-5.1 F)
1988
-17.2 C (1.0 F)
1989
-27.8 C (-18.0 F)
1990
-16.7 C (1.9 F)
1991
-18.3 C (-0.9 F)
1992
-18.9 C (-2.0 F)
1993
-20.6 C (-5.1 F)
1994
-32.8 C (-27.0 F)
1995
-18.9 C (-2.0 F)
1996
-25.0 C (-13.0 F)
1997
-20.6 C (-5.1 F)
1998
-16.1 C (3.0 F)
1999
-17.2 C (1.0 F)
2000
-21.7 C (-7.1 F)
2001
-21.7 C (-7.1 F)
2002
-16.1 C (3.0 F)
2003
-20.0 C (-4.0 F)
2004
-20.6 C (-5.1 F)
2005
-15.6 C (3.9 F)
2006
-16.1 C (3.0 F)
2007
-16.1 C (3.0 F)
2008
-16.1 C (3.0 F)
2009
-19.4 C (-2.9 F)
2010
-18.3 C (-0.9 F)
2011
-18.3 C (-0.9 F)
2012
-13.9 C (7.0 F)
2013
-15.0 C (5.0 F)
2014
-20.6 C (-5.1 F)
2015
-25.6 C (-14.1 F)
2016
-15.0 C (5.0 F)
2017
-16.1 C (3.0 F)
2018
-18.9 C (-2.0 F)
2019
-15.6 C (3.9 F)
2020
-11.1 C (12.0 F)
2021
-16.1 C (3.0 F)
2022
-21.7 C (-7.1 F)
2023
-10.0 C (14.0 F)
2024
-18.9 C (-2.0 F)
2025
-17.2 C (1.0 F)
Wettest day (Rx1day)
The wettest day of the year at Rough Rvr Lake, 1964 to 2025. The record is 188.0 mm (7.4 in) in 1997, marked on the chart; the median year is 78.0 mm (3.1 in).
Wettest day (Rx1day) at Rough Rvr Lake by year
Year
Wettest day (Rx1day)
1964
78.7 mm (3.1 in)
1965
83.1 mm (3.3 in)
1966
78.0 mm (3.1 in)
1967
78.0 mm (3.1 in)
1968
49.5 mm (1.9 in)
1969
67.3 mm (2.6 in)
1970
65.5 mm (2.6 in)
1971
66.8 mm (2.6 in)
1972
74.2 mm (2.9 in)
1973
93.2 mm (3.7 in)
1974
61.0 mm (2.4 in)
1975
62.7 mm (2.5 in)
1976
119.4 mm (4.7 in)
1977
92.7 mm (3.6 in)
1978
72.9 mm (2.9 in)
1979
110.2 mm (4.3 in)
1980
58.2 mm (2.3 in)
1981
82.3 mm (3.2 in)
1982
58.4 mm (2.3 in)
1983
83.3 mm (3.3 in)
1984
94.5 mm (3.7 in)
1985
56.1 mm (2.2 in)
1986
111.3 mm (4.4 in)
1987
90.2 mm (3.6 in)
1988
74.9 mm (2.9 in)
1989
137.9 mm (5.4 in)
1990
141.5 mm (5.6 in)
1991
41.9 mm (1.6 in)
1992
73.7 mm (2.9 in)
1993
58.4 mm (2.3 in)
1994
58.7 mm (2.3 in)
1995
136.4 mm (5.4 in)
1996
65.5 mm (2.6 in)
1997
188.0 mm (7.4 in)
1998
54.6 mm (2.1 in)
1999
90.4 mm (3.6 in)
2000
54.4 mm (2.1 in)
2001
95.5 mm (3.8 in)
2002
162.6 mm (6.4 in)
2003
73.4 mm (2.9 in)
2004
79.5 mm (3.1 in)
2005
74.2 mm (2.9 in)
2006
61.0 mm (2.4 in)
2007
115.1 mm (4.5 in)
2008
132.6 mm (5.2 in)
2009
56.4 mm (2.2 in)
2010
80.0 mm (3.1 in)
2011
92.7 mm (3.6 in)
2012
43.9 mm (1.7 in)
2013
62.7 mm (2.5 in)
2014
86.4 mm (3.4 in)
2015
78.5 mm (3.1 in)
2016
65.8 mm (2.6 in)
2017
77.2 mm (3.0 in)
2018
100.1 mm (3.9 in)
2019
83.6 mm (3.3 in)
2020
64.8 mm (2.6 in)
2021
81.3 mm (3.2 in)
2022
52.1 mm (2.1 in)
2023
110.5 mm (4.4 in)
2024
69.6 mm (2.7 in)
2025
110.2 mm (4.3 in)
Wettest five days (Rx5day)
The wettest five days of the year at Rough Rvr Lake, 1964 to 2025. The record is 278.2 mm (11.0 in) in 1995, marked on the chart; the median year is 123.7 mm (4.9 in).
Wettest five days (Rx5day) at Rough Rvr Lake by year
Year
Wettest five days (Rx5day)
1964
104.1 mm (4.1 in)
1965
102.4 mm (4.0 in)
1966
100.1 mm (3.9 in)
1967
119.9 mm (4.7 in)
1968
104.3 mm (4.1 in)
1969
134.7 mm (5.3 in)
1970
101.1 mm (4.0 in)
1971
82.8 mm (3.3 in)
1972
118.6 mm (4.7 in)
1973
165.9 mm (6.5 in)
1974
93.0 mm (3.7 in)
1975
92.9 mm (3.7 in)
1976
156.3 mm (6.2 in)
1977
115.9 mm (4.6 in)
1978
130.8 mm (5.1 in)
1979
143.5 mm (5.6 in)
1980
79.3 mm (3.1 in)
1981
105.7 mm (4.2 in)
1982
116.8 mm (4.6 in)
1983
236.2 mm (9.3 in)
1984
182.9 mm (7.2 in)
1985
90.7 mm (3.6 in)
1986
133.9 mm (5.3 in)
1987
138.9 mm (5.5 in)
1988
133.9 mm (5.3 in)
1989
242.1 mm (9.5 in)
1990
141.5 mm (5.6 in)
1991
71.9 mm (2.8 in)
1992
122.2 mm (4.8 in)
1993
100.8 mm (4.0 in)
1994
86.8 mm (3.4 in)
1995
278.2 mm (11.0 in)
1996
93.2 mm (3.7 in)
1997
274.1 mm (10.8 in)
1998
81.5 mm (3.2 in)
1999
105.3 mm (4.1 in)
2000
101.6 mm (4.0 in)
2001
176.1 mm (6.9 in)
2002
163.9 mm (6.5 in)
2003
151.4 mm (6.0 in)
2004
168.4 mm (6.6 in)
2005
136.2 mm (5.4 in)
2006
127.3 mm (5.0 in)
2007
195.9 mm (7.7 in)
2008
148.8 mm (5.9 in)
2009
92.1 mm (3.6 in)
2010
155.2 mm (6.1 in)
2011
237.2 mm (9.3 in)
2012
79.0 mm (3.1 in)
2013
93.5 mm (3.7 in)
2014
103.9 mm (4.1 in)
2015
118.1 mm (4.6 in)
2016
127.3 mm (5.0 in)
2017
156.7 mm (6.2 in)
2018
171.2 mm (6.7 in)
2019
174.6 mm (6.9 in)
2020
118.9 mm (4.7 in)
2021
99.2 mm (3.9 in)
2022
101.1 mm (4.0 in)
2023
149.3 mm (5.9 in)
2024
125.2 mm (4.9 in)
2025
255.0 mm (10.0 in)
Longest dry spell (CDD)
The longest dry spell of the year at Rough Rvr Lake, 1964 to 2025. The record is 41 days in 1999, marked on the chart; the median year is 19 days.
Longest dry spell (CDD) at Rough Rvr Lake by year
Year
Longest dry spell (CDD)
1964
26 days
1965
21 days
1966
19 days
1967
17 days
1968
18 days
1969
17 days
1970
14 days
1971
20 days
1972
23 days
1973
15 days
1974
13 days
1975
12 days
1976
25 days
1977
26 days
1978
15 days
1979
14 days
1980
19 days
1981
15 days
1982
19 days
1983
25 days
1984
14 days
1985
19 days
1986
19 days
1987
20 days
1988
31 days
1989
15 days
1990
17 days
1991
16 days
1992
28 days
1993
18 days
1994
25 days
1995
27 days
1996
11 days
1997
33 days
1998
39 days
1999
41 days
2000
31 days
2001
16 days
2002
20 days
2003
13 days
2004
38 days
2005
26 days
2006
13 days
2007
21 days
2008
18 days
2009
16 days
2010
24 days
2011
18 days
2012
27 days
2013
10 days
2014
20 days
2015
13 days
2016
19 days
2017
17 days
2018
12 days
2019
25 days
2020
17 days
2021
32 days
2022
35 days
2023
32 days
2024
25 days
2025
19 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
55 years with a frost
Across 55 years with a frost, the median last spring frost at Rough Rvr Lake falls on 24 April and the median first autumn frost on 14 October, which leaves a median of 175 days between them.
Fitted over all years, the growing season changes by +1.4 days per decade at this station.
Frost dates and growing season at Rough Rvr Lake
Measure
Median, all years
Earliest period
Recent period (1993 to 2024)
Recent against earliest
Fitted trend
Last spring frost
24 April
n/a
25 April
n/a
+0.4 days per decade
First autumn frost
14 October
n/a
17 October
n/a
+1.8 days per decade
Growing days
175 days
n/a
176 days
n/a
+1.4 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
60 years, 1965 to 2024
A day with at least 76.1 mm (3.0 in) of rain is expected about once in 2 years. A day with at least 193.3 mm (7.6 in) of rain is expected about once in 100 years.
Rainfall return levels at Rough Rvr 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
76.1 mm (3.0 in)
5 years
100.7 mm (4.0 in)
10 years
119.4 mm (4.7 in)
25 years
146.2 mm (5.8 in)
50 years
168.6 mm (6.6 in)
100 years
193.3 mm (7.6 in)
Longer than the 60 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, 60 years of values from 1965 to 2024.
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: 188.0 mm (7.4 in) in 1997; 162.6 mm (6.4 in) in 2002; 141.5 mm (5.6 in) in 1990.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Climate Twins
2008 to 2024 against 1961 to 1990
Over 2008 to 2024, Rough Rvr Lake had a mean temperature of 13.9 C (56.9 F) and 1,400.9 mm (55.2 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Lewisburg Exp STN (United States, 247 km away), Dresden (United States, 245 km away) and Campbellsville 2 SSW (United States, 106 km away).
Climate twins of Rough Rvr Lake: stations whose 1961 to 1990 climate is closest to its 2008 to 2024 climate
Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.
Download the Data
Data for Rough Rvr Lake standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Rough Rvr 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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.