Record envelope, standing records and threshold days for Alcove Dam (USC00300063), New York, United States, with 85 years of record.
Key Facts for Alcove Dam
Alcove Dam (USC00300063) is a weather station in New York, United States at 42.47 latitude and -73.93 longitude, 191 m (628 ft) above sea level.
The station reports from 1942 to 2026, 85 years of record.
1,464 records set at Alcove Dam still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Alcove Dam tied a daily record low maximum temperature of 18.9 C (66.0 F) on 30 July 2026.
About the Station
Location: New York, United States, 42.47 latitude, -73.93 longitude.
Elevation: 191 m (628 ft).
Period of record: 1942 to 2026, 85 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
6 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 Alcove Dam. The lines show the 2026 daily maximum and minimum. 6 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Alcove Dam, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
21.7 C (71.1 F)
-33.9 C (-29.0 F)
8.9 C (48.0 F)
-26.7 C (-16.1 F)
Feb
23.9 C (75.0 F)
-32.8 C (-27.0 F)
7.2 C (45.0 F)
-22.8 C (-9.0 F)
Mar
30.0 C (86.0 F)
-33.3 C (-27.9 F)
23.3 C (73.9 F)
-16.1 C (3.0 F)
Apr
32.8 C (91.0 F)
-12.2 C (10.0 F)
29.4 C (84.9 F)
-5.0 C (23.0 F)
May
35.6 C (96.1 F)
-6.1 C (21.0 F)
33.9 C (93.0 F)
1.7 C (35.1 F)
Jun
35.6 C (96.1 F)
-3.3 C (26.1 F)
31.1 C (88.0 F)
4.4 C (39.9 F)
Jul
37.8 C (100.0 F)
3.3 C (37.9 F)
33.9 C (93.0 F)
8.3 C (46.9 F)
Aug
38.9 C (102.0 F)
-0.6 C (30.9 F)
31.7 C (89.1 F)
10.0 C (50.0 F)
Sep
36.7 C (98.1 F)
-5.0 C (23.0 F)
27.2 C (81.0 F)
4.4 C (39.9 F)
Oct
31.7 C (89.1 F)
-11.1 C (12.0 F)
24.4 C (75.9 F)
0.6 C (33.1 F)
Nov
27.2 C (81.0 F)
-16.7 C (1.9 F)
n/a
n/a
Dec
22.8 C (73.0 F)
-31.1 C (-24.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Alcove Dam still stand. 1979 holds the most, with 37.
Standing records at Alcove Dam by the year they were set
Year set
Standing records
1942
18
1943
27
1944
11
1945
30
1946
25
1947
33
1948
20
1949
36
1950
12
1951
20
1952
8
1953
23
1954
24
1955
15
1956
21
1957
20
1958
13
1959
32
1960
16
1961
17
1962
13
1963
29
1964
31
1965
22
1966
30
1967
36
1968
11
1969
17
1970
14
1971
16
1972
23
1973
16
1974
25
1975
9
1976
19
1977
18
1978
20
1979
37
1980
12
1981
23
1982
19
1983
13
1984
23
1985
11
1986
12
1987
12
1988
20
1989
21
1990
15
1991
9
1992
10
1993
22
1994
14
1995
12
1996
13
1997
5
1998
10
1999
10
2000
25
2001
8
2002
19
2003
10
2004
13
2005
20
2006
15
2007
14
2008
13
2009
8
2010
11
2011
10
2012
16
2013
10
2014
17
2015
17
2016
17
2017
15
2018
20
2019
10
2020
8
2021
11
2022
13
2023
14
2024
14
2025
16
2026
7
All-Time Record Progression
14 new records
14 all-time records were set at Alcove Dam between 22 March 1980 and 16 February 2014. Each dot is a new record.
When Alcove Dam set new all-time records
Date
Kind
Detail
1980-03-22
Record daily precipitation
Record daily precipitation 136.7 mm (5.4 in)
1994-01-21
Record low minimum temperature
Record low minimum temperature -33.9 C (-29.0 F)
1999-07-05
Record high minimum temperature
Record high minimum temperature 25.0 C (77.0 F)
1999-09-17
Record daily precipitation
Record daily precipitation 175.0 mm (6.9 in)
2001-02-09
Record snow depth
Record snow depth 27.9 cm (11.0 in)
2001-03-06
Record daily snowfall
Record daily snowfall 26.2 cm (10.3 in)
2002-01-07
Record snow depth
Record snow depth 35.6 cm (14.0 in)
2002-01-08
Record snow depth
Record snow depth 38.1 cm (15.0 in)
2002-12-26
Record daily snowfall
Record daily snowfall 46.0 cm (18.1 in)
2003-01-04
Record daily snowfall
Record daily snowfall 51.1 cm (20.1 in)
2011-02-02
Record snow depth
Record snow depth 43.2 cm (17.0 in)
2011-02-03
Record snow depth
Record snow depth 48.3 cm (19.0 in)
2014-02-14
Record snow depth
Record snow depth 58.4 cm (23.0 in)
2014-02-16
Record snow depth
Record snow depth 61.0 cm (24.0 in)
Wettest Day of Each Month
Sep: 175.0 mm (6.9 in)
The wettest day on record for each calendar month at Alcove Dam. The most was 175.0 mm (6.9 in) on 17 September 1999.
Record daily precipitation for each month at Alcove Dam
Month
Record daily precipitation (mm)
Date
Jan
72.1 mm (2.8 in)
9 January 1978
Feb
57.9 mm (2.3 in)
26 February 2010
Mar
136.7 mm (5.4 in)
22 March 1980
Apr
100.3 mm (3.9 in)
16 April 2007
May
57.2 mm (2.3 in)
29 May 1984
Jun
108.7 mm (4.3 in)
7 June 2000
Jul
157.5 mm (6.2 in)
29 July 2026
Aug
115.8 mm (4.6 in)
28 August 1971
Sep
175.0 mm (6.9 in)
17 September 1999
Oct
143.5 mm (5.6 in)
1 October 2010
Nov
74.4 mm (2.9 in)
11 November 1990
Dec
90.4 mm (3.6 in)
31 December 1948
Period of Record Coverage
1942 to 2026
Complete yearUnder 90 percent of days
85 years of record at Alcove Dam, 1942 to 2026. 19 years have data for under 90 percent of days and are left out of rankings: 1942, 1948, 1949, 1950, 1951, 1954, 1962, 1982 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 57 complete years at Alcove Dam, 1943 to 2024. Blue stripes are years cooler than the station's own mean of 7.9 C (46.3 F); red stripes are warmer. The coolest year was 1972, at 6.0 C (42.8 F), and the warmest was 2024, at 9.9 C (49.8 F). The strongest colour marks a difference of 2.0 C (3.6 F).
Annual mean temperature at Alcove Dam as warming stripes, 1943 to 2024
Year
Annual mean temperature
Difference from the station mean
1943
7.2 C
-0.78 C
1944
7.6 C
-0.35 C
1945
7.7 C
-0.21 C
1946
8.5 C
+0.51 C
1947
7.7 C
-0.26 C
1952
7.9 C
-0.06 C
1953
8.6 C
+0.69 C
1955
8.5 C
+0.52 C
1956
7.6 C
-0.36 C
1957
8.6 C
+0.69 C
1958
7.2 C
-0.76 C
1959
8.6 C
+0.67 C
1960
7.8 C
-0.14 C
1963
7.1 C
-0.80 C
1964
8.0 C
+0.08 C
1965
7.3 C
-0.67 C
1966
7.9 C
-0.02 C
1969
6.8 C
-1.16 C
1970
7.4 C
-0.56 C
1971
7.2 C
-0.79 C
1972
6.0 C
-1.92 C
1973
8.4 C
+0.46 C
1974
7.3 C
-0.64 C
1975
7.8 C
-0.14 C
1976
6.9 C
-1.01 C
1977
7.4 C
-0.56 C
1978
6.4 C
-1.57 C
1979
7.9 C
-0.08 C
1980
7.4 C
-0.50 C
1981
7.9 C
-0.04 C
1983
8.4 C
+0.46 C
1984
8.4 C
+0.45 C
1989
6.7 C
-1.25 C
1993
6.9 C
-1.00 C
2000
7.1 C
-0.83 C
2001
8.4 C
+0.46 C
2002
8.6 C
+0.62 C
2004
7.5 C
-0.41 C
2005
8.0 C
+0.08 C
2006
9.1 C
+1.17 C
2007
7.8 C
-0.13 C
2009
8.0 C
+0.01 C
2010
9.2 C
+1.30 C
2011
8.6 C
+0.65 C
2012
9.7 C
+1.77 C
2013
7.9 C
-0.07 C
2014
7.1 C
-0.84 C
2015
7.6 C
-0.35 C
2016
9.0 C
+1.10 C
2017
8.5 C
+0.54 C
2018
8.1 C
+0.19 C
2019
7.6 C
-0.31 C
2020
9.2 C
+1.24 C
2021
8.9 C
+0.93 C
2022
8.3 C
+0.40 C
2023
9.5 C
+1.51 C
2024
9.9 C
+1.94 C
The annual mean temperature here has risen by 0.13 C (0.05 to 0.21) per decade over 1943 to 2024. In Fahrenheit: 0.2 F (0.1 to 0.4) per decade. The slope is a straight line fitted to 57 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Alcove Dam
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.13 C (0.05 to 0.21) per decade
0.2 F (0.1 to 0.4) per decade
1943 to 2024
57
Rise
Mean daily maximum
0.00 C (-0.08 to 0.07) per decade
0.00 F (-0.14 to 0.13) per decade
1943 to 2024
57
Not clearly different from zero
Mean daily minimum
0.3 C (0.2 to 0.4) per decade
0.5 F (0.3 to 0.6) per decade
1943 to 2024
57
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
1942 to 2026
Yearly extremes at Alcove Dam: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
38.9 C (102.0 F)
1955
33.9 C (93.0 F)
85
Coldest night (TNn)
-33.9 C (-29.0 F)
1994
-25.0 C (-13.0 F)
85
Wettest day (Rx1day)
175.0 mm (6.9 in)
1999
59.9 mm (2.4 in)
85
Wettest five days (Rx5day)
194.0 mm (7.6 in)
2026
98.1 mm (3.9 in)
85
Longest dry spell (CDD)
34 days
1978
16 days
85
Hottest day (TXx)
The hottest day of the year at Alcove Dam, 1942 to 2026. The record is 38.9 C (102.0 F) in 1955, marked on the chart; the median year is 33.9 C (93.0 F).
Hottest day (TXx) at Alcove Dam by year
Year
Hottest day (TXx)
1942
34.4 C (93.9 F)
1943
34.4 C (93.9 F)
1944
36.1 C (97.0 F)
1945
32.8 C (91.0 F)
1946
33.9 C (93.0 F)
1947
34.4 C (93.9 F)
1948
37.2 C (99.0 F)
1949
36.7 C (98.1 F)
1950
32.2 C (90.0 F)
1951
32.2 C (90.0 F)
1952
33.3 C (91.9 F)
1953
35.6 C (96.1 F)
1954
35.6 C (96.1 F)
1955
38.9 C (102.0 F)
1956
33.9 C (93.0 F)
1957
36.7 C (98.1 F)
1958
33.3 C (91.9 F)
1959
34.4 C (93.9 F)
1960
32.8 C (91.0 F)
1961
33.3 C (91.9 F)
1962
35.6 C (96.1 F)
1963
35.6 C (96.1 F)
1964
36.7 C (98.1 F)
1965
35.0 C (95.0 F)
1966
35.6 C (96.1 F)
1967
33.3 C (91.9 F)
1968
34.4 C (93.9 F)
1969
33.9 C (93.0 F)
1970
33.3 C (91.9 F)
1971
34.4 C (93.9 F)
1972
32.2 C (90.0 F)
1973
34.4 C (93.9 F)
1974
33.9 C (93.0 F)
1975
35.6 C (96.1 F)
1976
32.2 C (90.0 F)
1977
35.6 C (96.1 F)
1978
34.4 C (93.9 F)
1979
34.4 C (93.9 F)
1980
36.7 C (98.1 F)
1981
35.6 C (96.1 F)
1982
32.8 C (91.0 F)
1983
35.0 C (95.0 F)
1984
35.6 C (96.1 F)
1985
34.4 C (93.9 F)
1986
33.3 C (91.9 F)
1987
31.7 C (89.1 F)
1988
37.8 C (100.0 F)
1989
31.7 C (89.1 F)
1990
32.8 C (91.0 F)
1991
33.9 C (93.0 F)
1992
30.6 C (87.1 F)
1993
33.3 C (91.9 F)
1994
31.1 C (88.0 F)
1995
34.4 C (93.9 F)
1996
32.2 C (90.0 F)
1997
31.7 C (89.1 F)
1998
31.1 C (88.0 F)
1999
33.3 C (91.9 F)
2000
32.2 C (90.0 F)
2001
33.9 C (93.0 F)
2002
34.4 C (93.9 F)
2003
29.4 C (84.9 F)
2004
31.7 C (89.1 F)
2005
33.3 C (91.9 F)
2006
33.3 C (91.9 F)
2007
32.8 C (91.0 F)
2008
35.6 C (96.1 F)
2009
32.2 C (90.0 F)
2010
37.2 C (99.0 F)
2011
34.4 C (93.9 F)
2012
35.0 C (95.0 F)
2013
32.8 C (91.0 F)
2014
30.0 C (86.0 F)
2015
32.8 C (91.0 F)
2016
32.2 C (90.0 F)
2017
32.8 C (91.0 F)
2018
32.8 C (91.0 F)
2019
31.1 C (88.0 F)
2020
34.4 C (93.9 F)
2021
32.8 C (91.0 F)
2022
35.0 C (95.0 F)
2023
31.1 C (88.0 F)
2024
34.4 C (93.9 F)
2025
34.4 C (93.9 F)
2026
33.9 C (93.0 F)
Coldest night (TNn)
The coldest night of the year at Alcove Dam, 1942 to 2026. The record is -33.9 C (-29.0 F) in 1994, marked on the chart; the median year is -25.0 C (-13.0 F).
Coldest night (TNn) at Alcove Dam by year
Year
Coldest night (TNn)
1942
-27.8 C (-18.0 F)
1943
-32.8 C (-27.0 F)
1944
-28.3 C (-18.9 F)
1945
-25.0 C (-13.0 F)
1946
-24.4 C (-11.9 F)
1947
-21.7 C (-7.1 F)
1948
-33.3 C (-27.9 F)
1949
-20.0 C (-4.0 F)
1950
-26.7 C (-16.1 F)
1951
-28.3 C (-18.9 F)
1952
-21.7 C (-7.1 F)
1953
-20.0 C (-4.0 F)
1954
-12.2 C (10.0 F)
1955
-23.3 C (-9.9 F)
1956
-25.0 C (-13.0 F)
1957
-31.7 C (-25.1 F)
1958
-27.8 C (-18.0 F)
1959
-23.3 C (-9.9 F)
1960
-27.8 C (-18.0 F)
1961
-26.7 C (-16.1 F)
1962
-23.3 C (-9.9 F)
1963
-26.7 C (-16.1 F)
1964
-27.8 C (-18.0 F)
1965
-23.3 C (-9.9 F)
1966
-23.3 C (-9.9 F)
1967
-25.6 C (-14.1 F)
1968
-20.6 C (-5.1 F)
1969
-23.9 C (-11.0 F)
1970
-32.2 C (-26.0 F)
1971
-33.3 C (-27.9 F)
1972
-28.3 C (-18.9 F)
1973
-26.7 C (-16.1 F)
1974
-26.7 C (-16.1 F)
1975
-26.1 C (-15.0 F)
1976
-28.9 C (-20.0 F)
1977
-27.8 C (-18.0 F)
1978
-30.0 C (-22.0 F)
1979
-31.1 C (-24.0 F)
1980
-31.1 C (-24.0 F)
1981
-32.2 C (-26.0 F)
1982
-30.0 C (-22.0 F)
1983
-24.4 C (-11.9 F)
1984
-17.8 C (0.0 F)
1985
-17.8 C (0.0 F)
1986
-21.1 C (-6.0 F)
1987
-21.7 C (-7.1 F)
1988
-27.8 C (-18.0 F)
1989
-22.8 C (-9.0 F)
1990
-21.7 C (-7.1 F)
1991
-21.7 C (-7.1 F)
1992
-23.3 C (-9.9 F)
1993
-30.0 C (-22.0 F)
1994
-33.9 C (-29.0 F)
1995
-20.0 C (-4.0 F)
1996
-30.0 C (-22.0 F)
1997
-24.4 C (-11.9 F)
1998
-24.4 C (-11.9 F)
1999
-23.9 C (-11.0 F)
2000
-24.4 C (-11.9 F)
2001
-20.6 C (-5.1 F)
2002
-17.8 C (0.0 F)
2003
-27.2 C (-17.0 F)
2004
-24.4 C (-11.9 F)
2005
-28.3 C (-18.9 F)
2006
-17.8 C (0.0 F)
2007
-22.2 C (-8.0 F)
2008
-25.0 C (-13.0 F)
2009
-26.1 C (-15.0 F)
2010
-18.9 C (-2.0 F)
2011
-27.8 C (-18.0 F)
2012
-18.9 C (-2.0 F)
2013
-22.8 C (-9.0 F)
2014
-27.2 C (-17.0 F)
2015
-27.2 C (-17.0 F)
2016
-26.1 C (-15.0 F)
2017
-21.1 C (-6.0 F)
2018
-21.7 C (-7.1 F)
2019
-30.0 C (-22.0 F)
2020
-17.8 C (0.0 F)
2021
-22.2 C (-8.0 F)
2022
-23.3 C (-9.9 F)
2023
-25.0 C (-13.0 F)
2024
-21.1 C (-6.0 F)
2025
-22.8 C (-9.0 F)
2026
-26.7 C (-16.1 F)
Wettest day (Rx1day)
The wettest day of the year at Alcove Dam, 1942 to 2026. The record is 175.0 mm (6.9 in) in 1999, marked on the chart; the median year is 59.9 mm (2.4 in).
Wettest day (Rx1day) at Alcove Dam by year
Year
Wettest day (Rx1day)
1942
74.9 mm (2.9 in)
1943
72.4 mm (2.9 in)
1944
59.7 mm (2.4 in)
1945
52.1 mm (2.1 in)
1946
74.7 mm (2.9 in)
1947
66.5 mm (2.6 in)
1948
90.4 mm (3.6 in)
1949
45.7 mm (1.8 in)
1950
54.6 mm (2.1 in)
1951
58.4 mm (2.3 in)
1952
108.0 mm (4.3 in)
1953
57.7 mm (2.3 in)
1954
52.1 mm (2.1 in)
1955
106.7 mm (4.2 in)
1956
41.9 mm (1.6 in)
1957
68.6 mm (2.7 in)
1958
33.5 mm (1.3 in)
1959
60.7 mm (2.4 in)
1960
82.0 mm (3.2 in)
1961
38.1 mm (1.5 in)
1962
45.0 mm (1.8 in)
1963
36.3 mm (1.4 in)
1964
45.2 mm (1.8 in)
1965
45.2 mm (1.8 in)
1966
49.5 mm (1.9 in)
1967
45.7 mm (1.8 in)
1968
54.1 mm (2.1 in)
1969
68.6 mm (2.7 in)
1970
37.6 mm (1.5 in)
1971
115.8 mm (4.6 in)
1972
57.2 mm (2.3 in)
1973
90.9 mm (3.6 in)
1974
84.6 mm (3.3 in)
1975
62.0 mm (2.4 in)
1976
66.5 mm (2.6 in)
1977
49.3 mm (1.9 in)
1978
72.1 mm (2.8 in)
1979
94.5 mm (3.7 in)
1980
136.7 mm (5.4 in)
1981
51.3 mm (2.0 in)
1982
97.0 mm (3.8 in)
1983
73.7 mm (2.9 in)
1984
57.2 mm (2.3 in)
1985
50.8 mm (2.0 in)
1986
48.3 mm (1.9 in)
1987
70.1 mm (2.8 in)
1988
38.1 mm (1.5 in)
1989
51.3 mm (2.0 in)
1990
74.4 mm (2.9 in)
1991
53.3 mm (2.1 in)
1992
36.8 mm (1.4 in)
1993
39.6 mm (1.6 in)
1994
46.7 mm (1.8 in)
1995
30.5 mm (1.2 in)
1996
54.6 mm (2.1 in)
1997
63.5 mm (2.5 in)
1998
59.7 mm (2.4 in)
1999
175.0 mm (6.9 in)
2000
108.7 mm (4.3 in)
2001
58.7 mm (2.3 in)
2002
58.2 mm (2.3 in)
2003
43.7 mm (1.7 in)
2004
89.7 mm (3.5 in)
2005
89.2 mm (3.5 in)
2006
71.1 mm (2.8 in)
2007
100.3 mm (3.9 in)
2008
59.9 mm (2.4 in)
2009
40.4 mm (1.6 in)
2010
143.5 mm (5.6 in)
2011
110.5 mm (4.4 in)
2012
55.9 mm (2.2 in)
2013
62.7 mm (2.5 in)
2014
66.0 mm (2.6 in)
2015
119.4 mm (4.7 in)
2016
53.3 mm (2.1 in)
2017
64.8 mm (2.6 in)
2018
54.1 mm (2.1 in)
2019
77.2 mm (3.0 in)
2020
96.5 mm (3.8 in)
2021
72.4 mm (2.9 in)
2022
84.6 mm (3.3 in)
2023
73.2 mm (2.9 in)
2024
55.1 mm (2.2 in)
2025
49.8 mm (2.0 in)
2026
157.5 mm (6.2 in)
Wettest five days (Rx5day)
The wettest five days of the year at Alcove Dam, 1942 to 2026. The record is 194.0 mm (7.6 in) in 2026, marked on the chart; the median year is 98.1 mm (3.9 in).
Wettest five days (Rx5day) at Alcove Dam by year
Year
Wettest five days (Rx5day)
1942
115.3 mm (4.5 in)
1943
91.2 mm (3.6 in)
1944
98.1 mm (3.9 in)
1945
61.8 mm (2.4 in)
1946
102.1 mm (4.0 in)
1947
98.8 mm (3.9 in)
1948
109.9 mm (4.3 in)
1949
134.5 mm (5.3 in)
1950
90.7 mm (3.6 in)
1951
87.6 mm (3.4 in)
1952
117.9 mm (4.6 in)
1953
90.7 mm (3.6 in)
1954
76.0 mm (3.0 in)
1955
192.7 mm (7.6 in)
1956
60.4 mm (2.4 in)
1957
74.7 mm (2.9 in)
1958
104.2 mm (4.1 in)
1959
81.2 mm (3.2 in)
1960
177.0 mm (7.0 in)
1961
59.5 mm (2.3 in)
1962
50.1 mm (2.0 in)
1963
63.0 mm (2.5 in)
1964
60.4 mm (2.4 in)
1965
68.8 mm (2.7 in)
1966
61.0 mm (2.4 in)
1967
52.3 mm (2.1 in)
1968
87.4 mm (3.4 in)
1969
121.2 mm (4.8 in)
1970
52.6 mm (2.1 in)
1971
120.9 mm (4.8 in)
1972
107.8 mm (4.2 in)
1973
159.8 mm (6.3 in)
1974
101.9 mm (4.0 in)
1975
138.7 mm (5.5 in)
1976
77.4 mm (3.0 in)
1977
122.7 mm (4.8 in)
1978
80.8 mm (3.2 in)
1979
142.4 mm (5.6 in)
1980
153.7 mm (6.1 in)
1981
103.1 mm (4.1 in)
1982
119.1 mm (4.7 in)
1983
100.9 mm (4.0 in)
1984
125.1 mm (4.9 in)
1985
73.6 mm (2.9 in)
1986
90.5 mm (3.6 in)
1987
91.7 mm (3.6 in)
1988
98.4 mm (3.9 in)
1989
130.0 mm (5.1 in)
1990
97.0 mm (3.8 in)
1991
74.6 mm (2.9 in)
1992
55.1 mm (2.2 in)
1993
73.4 mm (2.9 in)
1994
64.5 mm (2.5 in)
1995
84.6 mm (3.3 in)
1996
75.7 mm (3.0 in)
1997
70.9 mm (2.8 in)
1998
114.8 mm (4.5 in)
1999
186.0 mm (7.3 in)
2000
129.5 mm (5.1 in)
2001
59.0 mm (2.3 in)
2002
84.3 mm (3.3 in)
2003
75.2 mm (3.0 in)
2004
114.1 mm (4.5 in)
2005
139.2 mm (5.5 in)
2006
132.8 mm (5.2 in)
2007
143.0 mm (5.6 in)
2008
112.4 mm (4.4 in)
2009
81.5 mm (3.2 in)
2010
177.1 mm (7.0 in)
2011
177.1 mm (7.0 in)
2012
82.6 mm (3.3 in)
2013
99.0 mm (3.9 in)
2014
85.1 mm (3.4 in)
2015
136.2 mm (5.4 in)
2016
79.5 mm (3.1 in)
2017
68.6 mm (2.7 in)
2018
115.3 mm (4.5 in)
2019
89.4 mm (3.5 in)
2020
128.5 mm (5.1 in)
2021
106.2 mm (4.2 in)
2022
95.8 mm (3.8 in)
2023
94.3 mm (3.7 in)
2024
98.8 mm (3.9 in)
2025
101.0 mm (4.0 in)
2026
194.0 mm (7.6 in)
Longest dry spell (CDD)
The longest dry spell of the year at Alcove Dam, 1942 to 2026. The record is 34 days in 1978, marked on the chart; the median year is 16 days.
Longest dry spell (CDD) at Alcove Dam by year
Year
Longest dry spell (CDD)
1942
11 days
1943
32 days
1944
15 days
1945
16 days
1946
18 days
1947
26 days
1948
13 days
1949
24 days
1950
16 days
1951
13 days
1952
25 days
1953
22 days
1954
13 days
1955
24 days
1956
18 days
1957
16 days
1958
20 days
1959
10 days
1960
11 days
1961
13 days
1962
18 days
1963
22 days
1964
19 days
1965
15 days
1966
19 days
1967
18 days
1968
16 days
1969
21 days
1970
14 days
1971
16 days
1972
16 days
1973
15 days
1974
13 days
1975
19 days
1976
17 days
1977
16 days
1978
34 days
1979
16 days
1980
34 days
1981
25 days
1982
17 days
1983
17 days
1984
15 days
1985
19 days
1986
19 days
1987
29 days
1988
18 days
1989
20 days
1990
14 days
1991
16 days
1992
15 days
1993
21 days
1994
15 days
1995
18 days
1996
10 days
1997
11 days
1998
13 days
1999
14 days
2000
21 days
2001
20 days
2002
11 days
2003
10 days
2004
13 days
2005
13 days
2006
24 days
2007
11 days
2008
14 days
2009
14 days
2010
13 days
2011
12 days
2012
19 days
2013
13 days
2014
11 days
2015
16 days
2016
16 days
2017
10 days
2018
13 days
2019
11 days
2020
16 days
2021
17 days
2022
12 days
2023
12 days
2024
16 days
2025
16 days
2026
11 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
57 years with a frost
Across 57 years with a frost, the median last spring frost at Alcove Dam falls on 14 May and the median first autumn frost on 3 October, which leaves a median of 145 days between them.
Fitted over all years, the growing season changes by +6.6 days per decade at this station.
Frost dates and growing season at Alcove Dam
Measure
Median, all years
Earliest period
Recent period (1979 to 2024)
Recent against earliest
Fitted trend
Last spring frost
14 May
n/a
9 May
n/a
-2.4 days per decade
First autumn frost
3 October
n/a
13 October
n/a
+4.2 days per decade
Growing days
145 days
n/a
157 days
n/a
+6.6 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
72 years, 1943 to 2025
A day with at least 63.2 mm (2.5 in) of rain is expected about once in 2 years. A day with at least 174.6 mm (6.9 in) of rain is expected about once in 100 years.
Rainfall return levels at Alcove 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
63.2 mm (2.5 in)
5 years
86.0 mm (3.4 in)
10 years
103.6 mm (4.1 in)
25 years
129.1 mm (5.1 in)
50 years
150.6 mm (5.9 in)
100 years
174.6 mm (6.9 in)
Longer than the 72 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, 72 years of values from 1943 to 2025.
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: 175.0 mm (6.9 in) in 1999; 143.5 mm (5.6 in) in 2010; 136.7 mm (5.4 in) in 1980.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Climate Twins
2010 to 2024 against 1961 to 1990
Over 2010 to 2024, Alcove Dam had a mean temperature of 8.6 C (47.5 F) and 1,111.4 mm (43.8 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Warren (United States, 436 km away), Emporium (United States, 371 km away) and Clinton (United States, 184 km away).
Climate twins of Alcove Dam: stations whose 1961 to 1990 climate is closest to its 2010 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 Alcove Dam standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Alcove 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.