Record envelope, standing records and threshold days for Long Lake Dam (USC00474829), Wisconsin, United States, with 94 years of record.
Key Facts for Long Lake Dam
Long Lake Dam (USC00474829) is a weather station in Wisconsin, United States at 45.89 latitude and -89.14 longitude, 497 m (1,630 ft) above sea level.
The station reports from 1908 to 2001, 94 years of record.
1,464 records set at Long Lake Dam still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Long Lake Dam set a daily record precipitation of 36.8 mm (1.4 in) on 11 October 2001.
About the Station
Location: Wisconsin, United States, 45.89 latitude, -89.14 longitude.
Elevation: 497 m (1,630 ft).
Period of record: 1908 to 2001, 94 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 Long Lake 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 Long Lake Dam, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
12.8 C (55.0 F)
-45.6 C (-50.1 F)
n/a
n/a
Feb
15.6 C (60.1 F)
-46.1 C (-51.0 F)
n/a
n/a
Mar
26.7 C (80.1 F)
-42.2 C (-44.0 F)
n/a
n/a
Apr
32.2 C (90.0 F)
-27.8 C (-18.0 F)
n/a
n/a
May
37.2 C (99.0 F)
-12.8 C (9.0 F)
n/a
n/a
Jun
38.3 C (100.9 F)
-6.1 C (21.0 F)
n/a
n/a
Jul
40.6 C (105.1 F)
-2.2 C (28.0 F)
n/a
n/a
Aug
36.1 C (97.0 F)
-3.9 C (25.0 F)
n/a
n/a
Sep
35.0 C (95.0 F)
-8.9 C (16.0 F)
n/a
n/a
Oct
31.1 C (88.0 F)
-17.2 C (1.0 F)
n/a
n/a
Nov
23.9 C (75.0 F)
-28.9 C (-20.0 F)
n/a
n/a
Dec
14.4 C (57.9 F)
-38.9 C (-38.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Long Lake Dam still stand. 1910 holds the most, with 34.
Standing records at Long Lake Dam by the year they were set
Year set
Standing records
1908
26
1909
21
1910
34
1911
30
1912
32
1913
31
1914
23
1915
24
1916
16
1917
21
1918
19
1919
20
1920
19
1921
26
1922
17
1923
32
1924
23
1925
23
1926
20
1927
21
1928
18
1929
17
1930
30
1931
24
1932
25
1933
14
1934
32
1935
13
1936
34
1937
17
1938
11
1939
14
1940
19
1941
10
1942
14
1943
12
1944
25
1945
21
1946
14
1947
26
1948
15
1949
12
1950
15
1951
21
1952
15
1953
15
1954
12
1955
13
1956
18
1957
6
1958
5
1959
6
1960
6
1961
6
1962
11
1963
18
1964
19
1965
14
1966
7
1967
12
1968
15
1969
6
1970
7
1971
14
1972
8
1973
16
1974
14
1975
6
1976
21
1977
20
1978
6
1979
10
1980
9
1981
12
1982
12
1983
21
1984
9
1985
8
1986
9
1987
17
1988
8
1989
15
1990
16
1991
24
1992
12
1993
4
1994
13
1995
12
1996
6
All-Time Record Progression
5 new records
5 all-time records were set at Long Lake Dam between 1 February 1938 and 17 January 1982. Each dot is a new record.
When Long Lake Dam set new all-time records
Date
Kind
Detail
1938-02-01
Record low minimum temperature
Record low minimum temperature -46.1 C (-51.0 F)
1942-07-17
Record daily precipitation
Record daily precipitation 172.7 mm (6.8 in)
1963-01-23
Record low maximum temperature
Record low maximum temperature -27.2 C (-17.0 F)
1965-02-12
Record daily snowfall
Record daily snowfall 40.6 cm (16.0 in)
1982-01-17
Record low maximum temperature
Record low maximum temperature -30.6 C (-23.1 F)
Wettest Day of Each Month
Jul: 172.7 mm (6.8 in)
The wettest day on record for each calendar month at Long Lake Dam. The most was 172.7 mm (6.8 in) on 17 July 1942.
Record daily precipitation for each month at Long Lake Dam
Month
Record daily precipitation (mm)
Date
Jan
47.0 mm (1.9 in)
5 January 1939
Feb
31.8 mm (1.3 in)
26 February 1951
Mar
32.5 mm (1.3 in)
11 March 1973
Apr
56.4 mm (2.2 in)
3 April 1934
May
69.6 mm (2.7 in)
16 May 1951
Jun
99.1 mm (3.9 in)
21 June 1949
Jul
172.7 mm (6.8 in)
17 July 1942
Aug
118.1 mm (4.6 in)
21 August 1936
Sep
80.8 mm (3.2 in)
20 September 1983
Oct
60.5 mm (2.4 in)
15 October 1966
Nov
51.6 mm (2.0 in)
10 November 1975
Dec
31.8 mm (1.3 in)
19 December 1939
Period of Record Coverage
1908 to 1996
Complete yearUnder 90 percent of days
89 years of record at Long Lake Dam, 1908 to 1996. 3 years have data for under 90 percent of days and are left out of rankings: 1929, 1959, 1996.
Cooler than the station meanWarmer than the station mean
One stripe for each of 79 complete years at Long Lake Dam, 1908 to 1995. Blue stripes are years cooler than the station's own mean of 4.1 C (39.4 F); red stripes are warmer. The coolest year was 1917, at 1.4 C (34.4 F), and the warmest was 1931, at 6.4 C (43.6 F). The strongest colour marks a difference of 2.8 C (5.0 F).
Annual mean temperature at Long Lake Dam as warming stripes, 1908 to 1995
Year
Annual mean temperature
Difference from the station mean
1908
4.9 C
+0.80 C
1909
3.9 C
-0.16 C
1910
4.3 C
+0.16 C
1911
4.5 C
+0.42 C
1912
2.6 C
-1.53 C
1913
4.3 C
+0.22 C
1914
4.1 C
-0.02 C
1915
4.2 C
+0.07 C
1916
3.1 C
-1.04 C
1917
1.4 C
-2.74 C
1918
3.6 C
-0.51 C
1919
4.1 C
+0.05 C
1920
3.6 C
-0.52 C
1921
5.5 C
+1.42 C
1922
3.9 C
-0.18 C
1923
3.3 C
-0.83 C
1925
3.4 C
-0.67 C
1927
3.2 C
-0.85 C
1930
4.5 C
+0.40 C
1931
6.4 C
+2.35 C
1932
3.8 C
-0.34 C
1933
4.0 C
-0.13 C
1934
3.9 C
-0.20 C
1935
3.5 C
-0.56 C
1936
3.1 C
-0.97 C
1937
3.6 C
-0.53 C
1938
5.0 C
+0.94 C
1939
4.7 C
+0.56 C
1940
3.6 C
-0.52 C
1941
5.6 C
+1.51 C
1942
4.7 C
+0.58 C
1943
3.9 C
-0.15 C
1944
5.6 C
+1.53 C
1945
3.9 C
-0.24 C
1946
5.2 C
+1.06 C
1947
4.6 C
+0.52 C
1948
4.3 C
+0.20 C
1949
5.2 C
+1.07 C
1950
2.6 C
-1.52 C
1951
3.4 C
-0.74 C
1952
4.9 C
+0.76 C
1953
5.1 C
+0.98 C
1954
3.6 C
-0.47 C
1955
3.7 C
-0.43 C
1956
3.9 C
-0.17 C
1957
4.3 C
+0.24 C
1958
4.3 C
+0.21 C
1960
3.9 C
-0.23 C
1961
4.7 C
+0.65 C
1962
4.1 C
+0.05 C
1963
4.3 C
+0.24 C
1964
4.7 C
+0.62 C
1966
3.7 C
-0.37 C
1967
3.6 C
-0.48 C
1968
5.1 C
+1.04 C
1969
4.6 C
+0.49 C
1970
4.8 C
+0.66 C
1971
4.5 C
+0.44 C
1973
4.6 C
+0.52 C
1974
3.2 C
-0.91 C
1976
2.7 C
-1.42 C
1977
4.1 C
+0.01 C
1978
3.2 C
-0.88 C
1979
2.6 C
-1.45 C
1980
3.9 C
-0.21 C
1981
4.9 C
+0.79 C
1982
3.7 C
-0.41 C
1983
5.0 C
+0.91 C
1984
4.7 C
+0.62 C
1986
4.4 C
+0.31 C
1987
5.7 C
+1.62 C
1988
4.3 C
+0.25 C
1989
3.0 C
-1.11 C
1990
4.9 C
+0.78 C
1991
4.1 C
+0.02 C
1992
3.1 C
-1.00 C
1993
3.2 C
-0.93 C
1994
4.1 C
+0.05 C
1995
3.7 C
-0.37 C
The fitted trend in annual mean temperature here over 1908 to 1995 is 0.02 C (-0.06 to 0.09) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.03 F (-0.10 to 0.17) per decade. The slope is a straight line fitted to 79 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Long Lake Dam
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.02 C (-0.06 to 0.09) per decade
0.03 F (-0.10 to 0.17) per decade
1908 to 1995
79
Not clearly different from zero
Mean daily maximum
-0.02 C (-0.10 to 0.05) per decade
-0.04 F (-0.17 to 0.09) per decade
1908 to 1995
79
Not clearly different from zero
Mean daily minimum
0.06 C (-0.03 to 0.15) per decade
0.1 F (-0.1 to 0.3) per decade
1908 to 1995
79
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
1908 to 2001
Yearly extremes at Long Lake Dam: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
40.6 C (105.1 F)
1936
32.8 C (91.0 F)
89
Coldest night (TNn)
-46.1 C (-51.0 F)
1938
-37.2 C (-35.0 F)
89
Wettest day (Rx1day)
172.7 mm (6.8 in)
1942
50.0 mm (2.0 in)
94
Wettest five days (Rx5day)
196.7 mm (7.7 in)
1941
79.0 mm (3.1 in)
94
Longest dry spell (CDD)
38 days
1993
18 days
94
Hottest day (TXx)
The hottest day of the year at Long Lake Dam, 1908 to 2001. The record is 40.6 C (105.1 F) in 1936, marked on the chart; the median year is 32.8 C (91.0 F).
Hottest day (TXx) at Long Lake Dam by year
Year
Hottest day (TXx)
1908
32.2 C (90.0 F)
1909
33.9 C (93.0 F)
1910
37.2 C (99.0 F)
1911
39.4 C (102.9 F)
1912
36.7 C (98.1 F)
1913
35.6 C (96.1 F)
1914
33.3 C (91.9 F)
1915
31.7 C (89.1 F)
1916
34.4 C (93.9 F)
1917
36.1 C (97.0 F)
1918
33.3 C (91.9 F)
1919
32.8 C (91.0 F)
1920
31.7 C (89.1 F)
1921
35.6 C (96.1 F)
1922
32.2 C (90.0 F)
1923
32.8 C (91.0 F)
1924
30.0 C (86.0 F)
1925
32.2 C (90.0 F)
1926
32.2 C (90.0 F)
1927
32.8 C (91.0 F)
1928
31.7 C (89.1 F)
1929
33.3 C (91.9 F)
1930
33.9 C (93.0 F)
1931
36.7 C (98.1 F)
1932
33.9 C (93.0 F)
1933
36.1 C (97.0 F)
1934
37.2 C (99.0 F)
1935
33.3 C (91.9 F)
1936
40.6 C (105.1 F)
1937
35.6 C (96.1 F)
1938
32.2 C (90.0 F)
1939
33.3 C (91.9 F)
1940
32.8 C (91.0 F)
1941
35.6 C (96.1 F)
1942
33.3 C (91.9 F)
1943
32.2 C (90.0 F)
1944
32.8 C (91.0 F)
1945
32.2 C (90.0 F)
1946
30.6 C (87.1 F)
1947
36.1 C (97.0 F)
1948
34.4 C (93.9 F)
1949
32.8 C (91.0 F)
1950
30.6 C (87.1 F)
1951
30.6 C (87.1 F)
1952
32.2 C (90.0 F)
1953
32.2 C (90.0 F)
1954
31.1 C (88.0 F)
1955
36.7 C (98.1 F)
1956
33.9 C (93.0 F)
1957
35.0 C (95.0 F)
1958
32.2 C (90.0 F)
1959
32.2 C (90.0 F)
1960
31.7 C (89.1 F)
1961
31.7 C (89.1 F)
1962
30.0 C (86.0 F)
1963
36.1 C (97.0 F)
1964
34.4 C (93.9 F)
1965
32.2 C (90.0 F)
1966
33.9 C (93.0 F)
1967
30.6 C (87.1 F)
1968
33.3 C (91.9 F)
1969
32.2 C (90.0 F)
1970
33.3 C (91.9 F)
1971
34.4 C (93.9 F)
1972
31.1 C (88.0 F)
1973
33.3 C (91.9 F)
1974
36.1 C (97.0 F)
1975
35.0 C (95.0 F)
1976
35.0 C (95.0 F)
1977
35.0 C (95.0 F)
1978
31.1 C (88.0 F)
1979
31.7 C (89.1 F)
1980
32.8 C (91.0 F)
1981
32.2 C (90.0 F)
1982
31.7 C (89.1 F)
1983
32.8 C (91.0 F)
1984
32.2 C (90.0 F)
1985
30.0 C (86.0 F)
1986
33.9 C (93.0 F)
1987
32.8 C (91.0 F)
1988
36.1 C (97.0 F)
1989
35.0 C (95.0 F)
1990
32.2 C (90.0 F)
1991
32.2 C (90.0 F)
1992
31.1 C (88.0 F)
1993
31.7 C (89.1 F)
1994
31.7 C (89.1 F)
1995
36.7 C (98.1 F)
1996
32.2 C (90.0 F)
1997
n/a
1998
n/a
1999
n/a
2000
n/a
2001
n/a
Coldest night (TNn)
The coldest night of the year at Long Lake Dam, 1908 to 2001. The record is -46.1 C (-51.0 F) in 1938, marked on the chart; the median year is -37.2 C (-35.0 F).
Coldest night (TNn) at Long Lake Dam by year
Year
Coldest night (TNn)
1908
-39.4 C (-38.9 F)
1909
-42.2 C (-44.0 F)
1910
-41.1 C (-42.0 F)
1911
-40.6 C (-41.1 F)
1912
-45.0 C (-49.0 F)
1913
-39.4 C (-38.9 F)
1914
-41.1 C (-42.0 F)
1915
-45.6 C (-50.1 F)
1916
-40.6 C (-41.1 F)
1917
-40.6 C (-41.1 F)
1918
-41.1 C (-42.0 F)
1919
-38.3 C (-36.9 F)
1920
-40.0 C (-40.0 F)
1921
-34.4 C (-29.9 F)
1922
-45.0 C (-49.0 F)
1923
-41.7 C (-43.1 F)
1924
-38.9 C (-38.0 F)
1925
-39.4 C (-38.9 F)
1926
-39.4 C (-38.9 F)
1927
-43.3 C (-45.9 F)
1928
-32.8 C (-27.0 F)
1929
-42.8 C (-45.0 F)
1930
-37.2 C (-35.0 F)
1931
-31.1 C (-24.0 F)
1932
-37.8 C (-36.0 F)
1933
-38.9 C (-38.0 F)
1934
-40.0 C (-40.0 F)
1935
-41.1 C (-42.0 F)
1936
-44.4 C (-47.9 F)
1937
-36.1 C (-33.0 F)
1938
-46.1 C (-51.0 F)
1939
-39.4 C (-38.9 F)
1940
-35.6 C (-32.1 F)
1941
-31.7 C (-25.1 F)
1942
-36.7 C (-34.1 F)
1943
-40.0 C (-40.0 F)
1944
-31.7 C (-25.1 F)
1945
-35.6 C (-32.1 F)
1946
-35.0 C (-31.0 F)
1947
-35.6 C (-32.1 F)
1948
-42.2 C (-44.0 F)
1949
-32.2 C (-26.0 F)
1950
-40.0 C (-40.0 F)
1951
-42.2 C (-44.0 F)
1952
-32.2 C (-26.0 F)
1953
-32.8 C (-27.0 F)
1954
-37.8 C (-36.0 F)
1955
-36.1 C (-33.0 F)
1956
-32.2 C (-26.0 F)
1957
-32.2 C (-26.0 F)
1958
-38.3 C (-36.9 F)
1959
-28.9 C (-20.0 F)
1960
-32.8 C (-27.0 F)
1961
-33.3 C (-27.9 F)
1962
-37.2 C (-35.0 F)
1963
-38.9 C (-38.0 F)
1964
-33.3 C (-27.9 F)
1965
-36.7 C (-34.1 F)
1966
-36.1 C (-33.0 F)
1967
-41.7 C (-43.1 F)
1968
-37.2 C (-35.0 F)
1969
-29.4 C (-20.9 F)
1970
-36.7 C (-34.1 F)
1971
-37.8 C (-36.0 F)
1972
-38.3 C (-36.9 F)
1973
-34.4 C (-29.9 F)
1974
-35.6 C (-32.1 F)
1975
-32.8 C (-27.0 F)
1976
-36.7 C (-34.1 F)
1977
-41.1 C (-42.0 F)
1978
-32.8 C (-27.0 F)
1979
-38.3 C (-36.9 F)
1980
-31.7 C (-25.1 F)
1981
-33.9 C (-29.0 F)
1982
-41.7 C (-43.1 F)
1983
-38.9 C (-38.0 F)
1984
-35.0 C (-31.0 F)
1985
-37.2 C (-35.0 F)
1986
-32.2 C (-26.0 F)
1987
-34.4 C (-29.9 F)
1988
-32.8 C (-27.0 F)
1989
-33.3 C (-27.9 F)
1990
-31.7 C (-25.1 F)
1991
-34.4 C (-29.9 F)
1992
-33.9 C (-29.0 F)
1993
-32.2 C (-26.0 F)
1994
-37.2 C (-35.0 F)
1995
-31.1 C (-24.0 F)
1996
-42.8 C (-45.0 F)
1997
n/a
1998
n/a
1999
n/a
2000
n/a
2001
n/a
Wettest day (Rx1day)
The wettest day of the year at Long Lake Dam, 1908 to 2001. The record is 172.7 mm (6.8 in) in 1942, marked on the chart; the median year is 50.0 mm (2.0 in).
Wettest day (Rx1day) at Long Lake Dam by year
Year
Wettest day (Rx1day)
1908
61.5 mm (2.4 in)
1909
43.2 mm (1.7 in)
1910
40.6 mm (1.6 in)
1911
55.1 mm (2.2 in)
1912
45.7 mm (1.8 in)
1913
38.4 mm (1.5 in)
1914
54.4 mm (2.1 in)
1915
42.9 mm (1.7 in)
1916
40.4 mm (1.6 in)
1917
38.1 mm (1.5 in)
1918
47.5 mm (1.9 in)
1919
53.1 mm (2.1 in)
1920
40.6 mm (1.6 in)
1921
46.2 mm (1.8 in)
1922
58.4 mm (2.3 in)
1923
35.3 mm (1.4 in)
1924
59.4 mm (2.3 in)
1925
46.2 mm (1.8 in)
1926
33.0 mm (1.3 in)
1927
50.0 mm (2.0 in)
1928
57.7 mm (2.3 in)
1929
37.6 mm (1.5 in)
1930
46.5 mm (1.8 in)
1931
50.3 mm (2.0 in)
1932
87.9 mm (3.5 in)
1933
50.8 mm (2.0 in)
1934
56.4 mm (2.2 in)
1935
78.0 mm (3.1 in)
1936
118.1 mm (4.6 in)
1937
33.0 mm (1.3 in)
1938
111.8 mm (4.4 in)
1939
47.0 mm (1.9 in)
1940
61.0 mm (2.4 in)
1941
86.4 mm (3.4 in)
1942
172.7 mm (6.8 in)
1943
44.5 mm (1.8 in)
1944
30.7 mm (1.2 in)
1945
50.3 mm (2.0 in)
1946
82.3 mm (3.2 in)
1947
33.3 mm (1.3 in)
1948
43.7 mm (1.7 in)
1949
99.1 mm (3.9 in)
1950
38.4 mm (1.5 in)
1951
69.6 mm (2.7 in)
1952
47.8 mm (1.9 in)
1953
47.0 mm (1.9 in)
1954
53.3 mm (2.1 in)
1955
49.8 mm (2.0 in)
1956
60.5 mm (2.4 in)
1957
52.1 mm (2.1 in)
1958
64.5 mm (2.5 in)
1959
78.5 mm (3.1 in)
1960
89.4 mm (3.5 in)
1961
43.9 mm (1.7 in)
1962
43.7 mm (1.7 in)
1963
43.4 mm (1.7 in)
1964
100.3 mm (3.9 in)
1965
29.2 mm (1.1 in)
1966
69.1 mm (2.7 in)
1967
44.5 mm (1.8 in)
1968
64.0 mm (2.5 in)
1969
51.8 mm (2.0 in)
1970
53.3 mm (2.1 in)
1971
39.4 mm (1.6 in)
1972
63.8 mm (2.5 in)
1973
49.3 mm (1.9 in)
1974
61.5 mm (2.4 in)
1975
57.7 mm (2.3 in)
1976
40.6 mm (1.6 in)
1977
91.4 mm (3.6 in)
1978
87.9 mm (3.5 in)
1979
40.6 mm (1.6 in)
1980
57.4 mm (2.3 in)
1981
85.1 mm (3.4 in)
1982
50.8 mm (2.0 in)
1983
80.8 mm (3.2 in)
1984
46.0 mm (1.8 in)
1985
57.2 mm (2.3 in)
1986
45.7 mm (1.8 in)
1987
30.5 mm (1.2 in)
1988
35.3 mm (1.4 in)
1989
29.2 mm (1.1 in)
1990
37.3 mm (1.5 in)
1991
41.1 mm (1.6 in)
1992
50.0 mm (2.0 in)
1993
40.6 mm (1.6 in)
1994
69.3 mm (2.7 in)
1995
39.4 mm (1.6 in)
1996
38.6 mm (1.5 in)
1997
38.4 mm (1.5 in)
1998
59.9 mm (2.4 in)
1999
47.5 mm (1.9 in)
2000
75.2 mm (3.0 in)
2001
74.9 mm (2.9 in)
Wettest five days (Rx5day)
The wettest five days of the year at Long Lake Dam, 1908 to 2001. The record is 196.7 mm (7.7 in) in 1941, marked on the chart; the median year is 79.0 mm (3.1 in).
Wettest five days (Rx5day) at Long Lake Dam by year
Year
Wettest five days (Rx5day)
1908
93.8 mm (3.7 in)
1909
78.0 mm (3.1 in)
1910
47.7 mm (1.9 in)
1911
77.0 mm (3.0 in)
1912
83.6 mm (3.3 in)
1913
76.5 mm (3.0 in)
1914
90.5 mm (3.6 in)
1915
56.8 mm (2.2 in)
1916
65.0 mm (2.6 in)
1917
52.6 mm (2.1 in)
1918
64.2 mm (2.5 in)
1919
58.7 mm (2.3 in)
1920
79.7 mm (3.1 in)
1921
68.8 mm (2.7 in)
1922
81.4 mm (3.2 in)
1923
54.3 mm (2.1 in)
1924
71.8 mm (2.8 in)
1925
72.3 mm (2.8 in)
1926
49.0 mm (1.9 in)
1927
84.3 mm (3.3 in)
1928
155.4 mm (6.1 in)
1929
92.0 mm (3.6 in)
1930
83.1 mm (3.3 in)
1931
94.0 mm (3.7 in)
1932
141.3 mm (5.6 in)
1933
70.1 mm (2.8 in)
1934
75.7 mm (3.0 in)
1935
88.6 mm (3.5 in)
1936
143.7 mm (5.7 in)
1937
59.2 mm (2.3 in)
1938
130.3 mm (5.1 in)
1939
81.5 mm (3.2 in)
1940
70.9 mm (2.8 in)
1941
196.7 mm (7.7 in)
1942
195.0 mm (7.7 in)
1943
95.8 mm (3.8 in)
1944
48.5 mm (1.9 in)
1945
62.0 mm (2.4 in)
1946
109.9 mm (4.3 in)
1947
47.1 mm (1.9 in)
1948
68.1 mm (2.7 in)
1949
132.1 mm (5.2 in)
1950
44.8 mm (1.8 in)
1951
82.8 mm (3.3 in)
1952
86.1 mm (3.4 in)
1953
102.1 mm (4.0 in)
1954
92.1 mm (3.6 in)
1955
86.6 mm (3.4 in)
1956
83.4 mm (3.3 in)
1957
83.1 mm (3.3 in)
1958
108.4 mm (4.3 in)
1959
108.2 mm (4.3 in)
1960
101.6 mm (4.0 in)
1961
77.9 mm (3.1 in)
1962
82.3 mm (3.2 in)
1963
67.0 mm (2.6 in)
1964
110.2 mm (4.3 in)
1965
63.7 mm (2.5 in)
1966
121.4 mm (4.8 in)
1967
57.1 mm (2.2 in)
1968
97.8 mm (3.9 in)
1969
56.6 mm (2.2 in)
1970
74.0 mm (2.9 in)
1971
69.4 mm (2.7 in)
1972
73.2 mm (2.9 in)
1973
75.9 mm (3.0 in)
1974
106.2 mm (4.2 in)
1975
83.1 mm (3.3 in)
1976
41.4 mm (1.6 in)
1977
143.0 mm (5.6 in)
1978
100.4 mm (4.0 in)
1979
95.3 mm (3.8 in)
1980
104.2 mm (4.1 in)
1981
111.6 mm (4.4 in)
1982
73.4 mm (2.9 in)
1983
105.2 mm (4.1 in)
1984
64.2 mm (2.5 in)
1985
72.1 mm (2.8 in)
1986
61.9 mm (2.4 in)
1987
47.3 mm (1.9 in)
1988
61.9 mm (2.4 in)
1989
40.4 mm (1.6 in)
1990
81.2 mm (3.2 in)
1991
78.3 mm (3.1 in)
1992
76.4 mm (3.0 in)
1993
67.6 mm (2.7 in)
1994
92.4 mm (3.6 in)
1995
83.4 mm (3.3 in)
1996
47.3 mm (1.9 in)
1997
70.7 mm (2.8 in)
1998
67.5 mm (2.7 in)
1999
71.5 mm (2.8 in)
2000
103.7 mm (4.1 in)
2001
91.6 mm (3.6 in)
Longest dry spell (CDD)
The longest dry spell of the year at Long Lake Dam, 1908 to 2001. The record is 38 days in 1993, marked on the chart; the median year is 18 days.
Longest dry spell (CDD) at Long Lake Dam by year
Year
Longest dry spell (CDD)
1908
25 days
1909
12 days
1910
24 days
1911
17 days
1912
35 days
1913
30 days
1914
20 days
1915
14 days
1916
17 days
1917
21 days
1918
27 days
1919
13 days
1920
23 days
1921
16 days
1922
13 days
1923
27 days
1924
23 days
1925
17 days
1926
14 days
1927
17 days
1928
22 days
1929
10 days
1930
24 days
1931
24 days
1932
21 days
1933
18 days
1934
14 days
1935
14 days
1936
19 days
1937
24 days
1938
17 days
1939
14 days
1940
14 days
1941
21 days
1942
17 days
1943
17 days
1944
24 days
1945
13 days
1946
17 days
1947
13 days
1948
19 days
1949
18 days
1950
15 days
1951
12 days
1952
28 days
1953
35 days
1954
21 days
1955
16 days
1956
19 days
1957
21 days
1958
16 days
1959
18 days
1960
26 days
1961
15 days
1962
26 days
1963
19 days
1964
27 days
1965
15 days
1966
20 days
1967
23 days
1968
20 days
1969
24 days
1970
26 days
1971
14 days
1972
17 days
1973
17 days
1974
21 days
1975
18 days
1976
21 days
1977
13 days
1978
27 days
1979
18 days
1980
31 days
1981
25 days
1982
21 days
1983
23 days
1984
21 days
1985
14 days
1986
16 days
1987
20 days
1988
14 days
1989
21 days
1990
15 days
1991
16 days
1992
12 days
1993
38 days
1994
15 days
1995
15 days
1996
11 days
1997
23 days
1998
17 days
1999
24 days
2000
15 days
2001
18 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
79 years with a frost
Across 79 years with a frost, the median last spring frost at Long Lake Dam falls on 9 June and the median first autumn frost on 3 September, which leaves a median of 82 days between them.
In 1962 to 1995 the median growing season was 100 days. That is 32 days more than in 1908 to 1941.
Fitted over all years, the growing season changes by +5.7 days per decade at this station.
Frost dates and growing season at Long Lake Dam
Measure
Median, all years
Earliest period (1908 to 1941)
Recent period (1962 to 1995)
Recent against earliest
Fitted trend
Last spring frost
9 June
16 June
4 June
12 days earlier
-1.5 days per decade
First autumn frost
3 September
23 August
17 September
25 days later
+4.2 days per decade
Growing days
82 days
68 days
100 days
32 days more
+5.7 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
87 years, 1908 to 2000
A day with at least 50.0 mm (2.0 in) of rain is expected about once in 2 years. A day with at least 146.2 mm (5.8 in) of rain is expected about once in 100 years.
Rainfall return levels at Long Lake 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
50.0 mm (2.0 in)
5 years
67.3 mm (2.6 in)
10 years
81.5 mm (3.2 in)
25 years
103.4 mm (4.1 in)
50 years
123.1 mm (4.8 in)
100 years
146.2 mm (5.8 in)
Longer than the 87 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, 87 years of values from 1908 to 2000.
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: 172.7 mm (6.8 in) in 1942; 118.1 mm (4.6 in) in 1936; 111.8 mm (4.4 in) in 1938.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Long Lake Dam standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Long Lake 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.