Record envelope, standing records and threshold days for Mt Adams Rs (USC00455659), Washington, United States, with 118 years of record.
Key Facts for Mt Adams Rs
Mt Adams Rs (USC00455659) is a weather station in Washington, United States at 46.00 latitude and -121.54 longitude, 594 m (1,950 ft) above sea level.
The station reports from 1909 to 2026, 118 years of record.
1,464 records set at Mt Adams Rs still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Mt Adams Rs set a daily record high minimum temperature of 15.6 C (60.1 F) on 16 June 2026.
About the Station
Location: Washington, United States, 46.00 latitude, -121.54 longitude.
Elevation: 594 m (1,950 ft).
Period of record: 1909 to 2026, 118 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
4 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 Mt Adams Rs. The lines show the 2026 daily maximum and minimum. 4 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Mt Adams Rs, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
16.7 C (62.1 F)
-30.0 C (-22.0 F)
13.9 C (57.0 F)
-11.1 C (12.0 F)
Feb
17.8 C (64.0 F)
-28.9 C (-20.0 F)
11.7 C (53.1 F)
-4.4 C (24.1 F)
Mar
26.1 C (79.0 F)
-21.7 C (-7.1 F)
20.6 C (69.1 F)
-5.6 C (21.9 F)
Apr
33.3 C (91.9 F)
-10.6 C (12.9 F)
24.4 C (75.9 F)
-4.4 C (24.1 F)
May
36.1 C (97.0 F)
-7.8 C (18.0 F)
28.3 C (82.9 F)
1.1 C (34.0 F)
Jun
42.8 C (109.0 F)
-2.8 C (27.0 F)
32.2 C (90.0 F)
1.7 C (35.1 F)
Jul
42.2 C (108.0 F)
-2.2 C (28.0 F)
36.1 C (97.0 F)
5.6 C (42.1 F)
Aug
42.2 C (108.0 F)
-4.4 C (24.1 F)
35.6 C (96.1 F)
3.9 C (39.0 F)
Sep
36.7 C (98.1 F)
-11.7 C (10.9 F)
27.8 C (82.0 F)
-1.1 C (30.0 F)
Oct
31.7 C (89.1 F)
-13.3 C (8.1 F)
27.8 C (82.0 F)
2.8 C (37.0 F)
Nov
21.1 C (70.0 F)
-22.8 C (-9.0 F)
n/a
n/a
Dec
17.2 C (63.0 F)
-28.9 C (-20.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Mt Adams Rs still stand. 1934 holds the most, with 39.
Standing records at Mt Adams Rs by the year they were set
Year set
Standing records
1924
32
1925
22
1926
31
1927
16
1928
10
1929
30
1930
21
1931
23
1932
21
1933
29
1934
39
1935
29
1936
34
1937
14
1938
18
1939
20
1940
5
1941
4
1942
9
1943
12
1944
7
1945
11
1946
24
1947
13
1948
9
1949
19
1950
21
1951
13
1952
10
1953
4
1954
13
1955
23
1956
11
1957
12
1958
15
1959
11
1960
20
1961
17
1962
22
1963
10
1964
15
1965
14
1966
11
1967
8
1968
17
1969
10
1970
15
1971
17
1972
26
1973
14
1974
19
1975
14
1976
14
1977
9
1978
11
1979
11
1980
19
1981
12
1982
8
1983
23
1984
10
1985
31
1986
14
1987
11
1988
22
1989
12
1990
15
1991
7
1992
17
1993
15
1994
2
1995
5
1996
10
1997
3
1998
4
1999
12
2000
21
2001
20
2002
13
2003
9
2004
4
2005
7
2006
5
2007
7
2008
6
2009
6
2010
9
2011
10
2012
17
2013
11
2014
19
2015
12
2016
4
2018
9
2019
12
2020
10
2021
11
2022
12
2023
15
2024
9
2025
14
2026
11
All-Time Record Progression
4 new records
4 all-time records were set at Mt Adams Rs between 17 December 1964 and 30 June 2021. Each dot is a new record.
When Mt Adams Rs set new all-time records
Date
Kind
Detail
1964-12-17
Record low maximum temperature
Record low maximum temperature -17.8 C (0.0 F)
1968-12-31
Record low maximum temperature
Record low maximum temperature -20.0 C (-4.0 F)
2019-02-14
Record daily snowfall
Record daily snowfall 121.9 cm (48.0 in)
2021-06-30
Record high maximum temperature
Record high maximum temperature 42.8 C (109.0 F)
Wettest Day of Each Month
Dec: 182.9 mm (7.2 in)
The wettest day on record for each calendar month at Mt Adams Rs. The most was 182.9 mm (7.2 in) on 23 December 1934.
Record daily precipitation for each month at Mt Adams Rs
Month
Record daily precipitation (mm)
Date
Jan
110.5 mm (4.4 in)
15 January 1974
Feb
132.1 mm (5.2 in)
18 February 2014
Mar
94.0 mm (3.7 in)
1 March 1999
Apr
52.8 mm (2.1 in)
14 April 1929
May
48.0 mm (1.9 in)
1 May 1949
Jun
50.8 mm (2.0 in)
15 June 1931
Jul
33.0 mm (1.3 in)
12 July 2011
Aug
55.9 mm (2.2 in)
26 August 1979
Sep
100.1 mm (3.9 in)
30 September 2013
Oct
85.1 mm (3.4 in)
27 October 1994
Nov
108.0 mm (4.3 in)
19 November 2012
Dec
182.9 mm (7.2 in)
23 December 1934
Period of Record Coverage
1924 to 2026
Complete yearUnder 90 percent of days
103 years of record at Mt Adams Rs, 1924 to 2026. 43 years have data for under 90 percent of days and are left out of rankings: 1924, 1931, 1946, 1947, 1948, 1957, 1958, 1964 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 57 complete years at Mt Adams Rs, 1925 to 2024. Blue stripes are years cooler than the station's own mean of 8.3 C (46.9 F); red stripes are warmer. The coolest year was 1985, at 6.5 C (43.7 F), and the warmest was 1934, at 10.4 C (50.6 F). The strongest colour marks a difference of 2.1 C (3.8 F).
Annual mean temperature at Mt Adams Rs as warming stripes, 1925 to 2024
Year
Annual mean temperature
Difference from the station mean
1925
9.2 C
+0.90 C
1927
7.7 C
-0.57 C
1928
8.4 C
+0.08 C
1929
7.5 C
-0.79 C
1930
7.4 C
-0.90 C
1932
7.9 C
-0.42 C
1933
8.0 C
-0.24 C
1934
10.4 C
+2.09 C
1935
7.9 C
-0.36 C
1936
8.2 C
-0.12 C
1938
8.9 C
+0.58 C
1939
9.3 C
+1.05 C
1940
9.1 C
+0.79 C
1941
8.8 C
+0.56 C
1942
8.2 C
-0.05 C
1943
7.6 C
-0.64 C
1944
8.0 C
-0.23 C
1945
8.0 C
-0.32 C
1949
7.2 C
-1.10 C
1950
7.0 C
-1.27 C
1951
7.7 C
-0.55 C
1952
7.9 C
-0.33 C
1955
6.8 C
-1.50 C
1959
7.9 C
-0.40 C
1960
8.0 C
-0.28 C
1961
8.9 C
+0.58 C
1962
7.9 C
-0.38 C
1963
8.4 C
+0.14 C
1964
7.5 C
-0.82 C
1968
8.3 C
+0.04 C
1969
7.9 C
-0.35 C
1970
8.6 C
+0.36 C
1971
7.8 C
-0.47 C
1972
7.9 C
-0.34 C
1973
8.6 C
+0.36 C
1974
9.0 C
+0.73 C
1976
9.2 C
+0.95 C
1977
8.2 C
-0.04 C
1978
8.2 C
-0.05 C
1984
7.6 C
-0.71 C
1985
6.5 C
-1.75 C
1986
8.8 C
+0.54 C
1987
9.0 C
+0.77 C
1988
8.8 C
+0.53 C
1989
8.2 C
-0.10 C
1993
7.2 C
-1.06 C
1996
7.7 C
-0.55 C
2006
8.8 C
+0.52 C
2008
8.1 C
-0.15 C
2011
8.0 C
-0.25 C
2014
9.4 C
+1.09 C
2016
9.2 C
+0.92 C
2018
9.4 C
+1.09 C
2019
8.1 C
-0.17 C
2020
9.5 C
+1.19 C
2023
9.0 C
+0.71 C
2024
9.2 C
+0.88 C
The fitted trend in annual mean temperature here over 1925 to 2024 is 0.06 C (-0.01 to 0.13) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.11 F (-0.01 to 0.23) 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 Mt Adams Rs
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.06 C (-0.01 to 0.13) per decade
0.11 F (-0.01 to 0.23) per decade
1925 to 2024
57
Not clearly different from zero
Mean daily maximum
-0.02 C (-0.10 to 0.07) per decade
-0.03 F (-0.19 to 0.12) per decade
1925 to 2024
57
Not clearly different from zero
Mean daily minimum
0.1 C (0.1 to 0.2) per decade
0.3 F (0.1 to 0.4) per decade
1925 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
1909 to 2026
Yearly extremes at Mt Adams Rs: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
42.8 C (109.0 F)
2021
36.7 C (98.1 F)
103
Coldest night (TNn)
-30.0 C (-22.0 F)
1927
-18.3 C (-0.9 F)
103
Wettest day (Rx1day)
182.9 mm (7.2 in)
1934
57.2 mm (2.3 in)
106
Wettest five days (Rx5day)
259.3 mm (10.2 in)
1933
115.9 mm (4.6 in)
105
Longest dry spell (CDD)
101 days
1974
42 days
106
Hottest day (TXx)
The hottest day of the year at Mt Adams Rs, 1909 to 2026. The record is 42.8 C (109.0 F) in 2021, marked on the chart; the median year is 36.7 C (98.1 F).
Hottest day (TXx) at Mt Adams Rs by year
Year
Hottest day (TXx)
1909
n/a
1910
n/a
1911
n/a
1912
n/a
1913
n/a
1914
n/a
1915
n/a
1916
n/a
1917
n/a
1918
n/a
1924
39.4 C (102.9 F)
1925
37.2 C (99.0 F)
1926
38.3 C (100.9 F)
1927
37.2 C (99.0 F)
1928
41.1 C (106.0 F)
1929
36.7 C (98.1 F)
1930
35.0 C (95.0 F)
1931
34.4 C (93.9 F)
1932
35.0 C (95.0 F)
1933
36.7 C (98.1 F)
1934
36.1 C (97.0 F)
1935
38.3 C (100.9 F)
1936
36.7 C (98.1 F)
1937
36.7 C (98.1 F)
1938
40.6 C (105.1 F)
1939
42.2 C (108.0 F)
1940
36.1 C (97.0 F)
1941
40.0 C (104.0 F)
1942
40.0 C (104.0 F)
1943
36.7 C (98.1 F)
1944
36.7 C (98.1 F)
1945
36.1 C (97.0 F)
1946
37.2 C (99.0 F)
1947
35.0 C (95.0 F)
1948
35.6 C (96.1 F)
1949
36.7 C (98.1 F)
1950
35.6 C (96.1 F)
1951
34.4 C (93.9 F)
1952
35.0 C (95.0 F)
1953
35.0 C (95.0 F)
1954
32.8 C (91.0 F)
1955
35.0 C (95.0 F)
1956
37.8 C (100.0 F)
1957
32.2 C (90.0 F)
1958
38.3 C (100.9 F)
1959
38.3 C (100.9 F)
1960
36.1 C (97.0 F)
1961
38.3 C (100.9 F)
1962
34.4 C (93.9 F)
1963
33.3 C (91.9 F)
1964
35.0 C (95.0 F)
1965
37.2 C (99.0 F)
1966
33.3 C (91.9 F)
1967
37.8 C (100.0 F)
1968
36.1 C (97.0 F)
1969
34.4 C (93.9 F)
1970
37.2 C (99.0 F)
1971
39.4 C (102.9 F)
1972
38.3 C (100.9 F)
1973
36.7 C (98.1 F)
1974
35.6 C (96.1 F)
1975
30.6 C (87.1 F)
1976
35.0 C (95.0 F)
1977
35.6 C (96.1 F)
1978
37.2 C (99.0 F)
1979
38.3 C (100.9 F)
1980
34.4 C (93.9 F)
1981
42.2 C (108.0 F)
1982
36.1 C (97.0 F)
1983
36.7 C (98.1 F)
1984
36.7 C (98.1 F)
1985
37.2 C (99.0 F)
1986
37.2 C (99.0 F)
1987
36.1 C (97.0 F)
1988
36.7 C (98.1 F)
1989
34.4 C (93.9 F)
1990
36.1 C (97.0 F)
1991
34.4 C (93.9 F)
1992
37.8 C (100.0 F)
1993
33.3 C (91.9 F)
1994
38.3 C (100.9 F)
1995
34.4 C (93.9 F)
1996
36.7 C (98.1 F)
1997
34.4 C (93.9 F)
1998
38.9 C (102.0 F)
1999
34.4 C (93.9 F)
2000
34.4 C (93.9 F)
2001
36.1 C (97.0 F)
2002
34.4 C (93.9 F)
2003
38.3 C (100.9 F)
2004
36.1 C (97.0 F)
2005
36.1 C (97.0 F)
2006
38.9 C (102.0 F)
2007
33.9 C (93.0 F)
2008
38.3 C (100.9 F)
2009
38.3 C (100.9 F)
2010
35.6 C (96.1 F)
2011
34.4 C (93.9 F)
2012
36.1 C (97.0 F)
2013
35.6 C (96.1 F)
2014
36.7 C (98.1 F)
2015
37.2 C (99.0 F)
2016
35.6 C (96.1 F)
2017
36.7 C (98.1 F)
2018
37.2 C (99.0 F)
2019
35.0 C (95.0 F)
2020
37.8 C (100.0 F)
2021
42.8 C (109.0 F)
2022
37.8 C (100.0 F)
2023
39.4 C (102.9 F)
2024
38.9 C (102.0 F)
2025
37.2 C (99.0 F)
2026
36.1 C (97.0 F)
Coldest night (TNn)
The coldest night of the year at Mt Adams Rs, 1909 to 2026. The record is -30.0 C (-22.0 F) in 1927, marked on the chart; the median year is -18.3 C (-0.9 F).
Coldest night (TNn) at Mt Adams Rs by year
Year
Coldest night (TNn)
1909
n/a
1910
n/a
1911
n/a
1912
n/a
1913
n/a
1914
n/a
1915
n/a
1916
n/a
1917
n/a
1918
n/a
1924
-24.4 C (-11.9 F)
1925
-9.4 C (15.1 F)
1926
-22.8 C (-9.0 F)
1927
-30.0 C (-22.0 F)
1928
-16.1 C (3.0 F)
1929
-27.2 C (-17.0 F)
1930
-29.4 C (-20.9 F)
1931
-20.6 C (-5.1 F)
1932
-23.9 C (-11.0 F)
1933
-24.4 C (-11.9 F)
1934
-7.8 C (18.0 F)
1935
-26.1 C (-15.0 F)
1936
-23.3 C (-9.9 F)
1937
-26.1 C (-15.0 F)
1938
-13.3 C (8.1 F)
1939
-17.2 C (1.0 F)
1940
-14.4 C (6.1 F)
1941
-9.4 C (15.1 F)
1942
-22.2 C (-8.0 F)
1943
-29.4 C (-20.9 F)
1944
-15.0 C (5.0 F)
1945
-15.6 C (3.9 F)
1946
-12.8 C (9.0 F)
1947
-20.0 C (-4.0 F)
1948
-20.6 C (-5.1 F)
1949
-26.7 C (-16.1 F)
1950
-26.1 C (-15.0 F)
1951
-23.9 C (-11.0 F)
1952
-15.0 C (5.0 F)
1953
-8.3 C (17.1 F)
1954
-26.1 C (-15.0 F)
1955
-22.2 C (-8.0 F)
1956
-26.7 C (-16.1 F)
1957
-28.3 C (-18.9 F)
1958
-12.8 C (9.0 F)
1959
-20.0 C (-4.0 F)
1960
-16.7 C (1.9 F)
1961
-16.1 C (3.0 F)
1962
-20.6 C (-5.1 F)
1963
-21.7 C (-7.1 F)
1964
-28.9 C (-20.0 F)
1965
-12.8 C (9.0 F)
1966
-12.8 C (9.0 F)
1967
-17.2 C (1.0 F)
1968
-21.7 C (-7.1 F)
1969
-20.6 C (-5.1 F)
1970
-13.9 C (7.0 F)
1971
-17.2 C (1.0 F)
1972
-23.3 C (-9.9 F)
1973
-17.2 C (1.0 F)
1974
-27.2 C (-17.0 F)
1975
-13.3 C (8.1 F)
1976
-14.4 C (6.1 F)
1977
-16.7 C (1.9 F)
1978
-24.4 C (-11.9 F)
1979
-23.3 C (-9.9 F)
1980
-26.1 C (-15.0 F)
1981
-8.3 C (17.1 F)
1982
-15.0 C (5.0 F)
1983
-28.9 C (-20.0 F)
1984
-22.2 C (-8.0 F)
1985
-24.4 C (-11.9 F)
1986
-13.3 C (8.1 F)
1987
-16.1 C (3.0 F)
1988
-18.3 C (-0.9 F)
1989
-20.6 C (-5.1 F)
1990
-25.0 C (-13.0 F)
1991
-11.7 C (10.9 F)
1992
-12.2 C (10.0 F)
1993
-21.1 C (-6.0 F)
1994
-16.7 C (1.9 F)
1995
-17.8 C (0.0 F)
1996
-28.9 C (-20.0 F)
1997
-17.2 C (1.0 F)
1998
-20.6 C (-5.1 F)
1999
-8.3 C (17.1 F)
2000
-11.7 C (10.9 F)
2001
-12.8 C (9.0 F)
2002
-14.4 C (6.1 F)
2003
-15.0 C (5.0 F)
2004
-21.7 C (-7.1 F)
2005
-15.6 C (3.9 F)
2006
-16.7 C (1.9 F)
2007
-18.9 C (-2.0 F)
2008
-20.0 C (-4.0 F)
2009
-20.0 C (-4.0 F)
2010
-20.0 C (-4.0 F)
2011
-14.4 C (6.1 F)
2012
-13.3 C (8.1 F)
2013
-20.6 C (-5.1 F)
2014
-16.1 C (3.0 F)
2015
-14.4 C (6.1 F)
2016
-16.1 C (3.0 F)
2017
-21.7 C (-7.1 F)
2018
-16.1 C (3.0 F)
2019
-19.4 C (-2.9 F)
2020
-9.4 C (15.1 F)
2021
-11.7 C (10.9 F)
2022
-16.1 C (3.0 F)
2023
-16.7 C (1.9 F)
2024
-22.2 C (-8.0 F)
2025
-20.6 C (-5.1 F)
2026
-11.1 C (12.0 F)
Wettest day (Rx1day)
The wettest day of the year at Mt Adams Rs, 1909 to 2026. The record is 182.9 mm (7.2 in) in 1934, marked on the chart; the median year is 57.2 mm (2.3 in).
Wettest day (Rx1day) at Mt Adams Rs by year
Year
Wettest day (Rx1day)
1909
22.9 mm (0.9 in)
1910
22.9 mm (0.9 in)
1911
n/a
1912
n/a
1913
30.5 mm (1.2 in)
1914
n/a
1915
n/a
1916
n/a
1917
n/a
1918
n/a
1924
36.6 mm (1.4 in)
1925
42.7 mm (1.7 in)
1926
58.7 mm (2.3 in)
1927
79.8 mm (3.1 in)
1928
50.8 mm (2.0 in)
1929
52.8 mm (2.1 in)
1930
47.5 mm (1.9 in)
1931
81.0 mm (3.2 in)
1932
55.1 mm (2.2 in)
1933
99.1 mm (3.9 in)
1934
182.9 mm (7.2 in)
1935
32.5 mm (1.3 in)
1936
50.8 mm (2.0 in)
1937
77.5 mm (3.1 in)
1938
63.5 mm (2.5 in)
1939
55.9 mm (2.2 in)
1940
50.8 mm (2.0 in)
1941
74.4 mm (2.9 in)
1942
76.5 mm (3.0 in)
1943
63.0 mm (2.5 in)
1944
37.1 mm (1.5 in)
1945
73.9 mm (2.9 in)
1946
69.9 mm (2.8 in)
1947
47.5 mm (1.9 in)
1948
59.4 mm (2.3 in)
1949
81.5 mm (3.2 in)
1950
89.4 mm (3.5 in)
1951
52.8 mm (2.1 in)
1952
38.6 mm (1.5 in)
1953
71.9 mm (2.8 in)
1954
63.5 mm (2.5 in)
1955
74.7 mm (2.9 in)
1956
60.7 mm (2.4 in)
1957
42.4 mm (1.7 in)
1958
39.4 mm (1.6 in)
1959
36.8 mm (1.4 in)
1960
52.1 mm (2.1 in)
1961
52.6 mm (2.1 in)
1962
89.7 mm (3.5 in)
1963
54.9 mm (2.2 in)
1964
37.6 mm (1.5 in)
1965
45.7 mm (1.8 in)
1966
42.7 mm (1.7 in)
1967
59.2 mm (2.3 in)
1968
93.7 mm (3.7 in)
1969
72.9 mm (2.9 in)
1970
59.7 mm (2.4 in)
1971
62.2 mm (2.4 in)
1972
95.0 mm (3.7 in)
1973
57.7 mm (2.3 in)
1974
110.5 mm (4.4 in)
1975
57.2 mm (2.3 in)
1976
46.5 mm (1.8 in)
1977
92.7 mm (3.6 in)
1978
34.3 mm (1.4 in)
1979
55.9 mm (2.2 in)
1980
81.3 mm (3.2 in)
1981
73.4 mm (2.9 in)
1982
84.1 mm (3.3 in)
1983
69.9 mm (2.8 in)
1984
62.2 mm (2.4 in)
1985
52.8 mm (2.1 in)
1986
74.2 mm (2.9 in)
1987
69.9 mm (2.8 in)
1988
76.2 mm (3.0 in)
1989
38.1 mm (1.5 in)
1990
57.2 mm (2.3 in)
1991
47.5 mm (1.9 in)
1992
50.8 mm (2.0 in)
1993
43.2 mm (1.7 in)
1994
85.1 mm (3.4 in)
1995
49.3 mm (1.9 in)
1996
51.3 mm (2.0 in)
1997
78.7 mm (3.1 in)
1998
59.7 mm (2.4 in)
1999
94.0 mm (3.7 in)
2000
67.3 mm (2.6 in)
2001
53.3 mm (2.1 in)
2002
50.8 mm (2.0 in)
2003
62.5 mm (2.5 in)
2004
48.0 mm (1.9 in)
2005
46.2 mm (1.8 in)
2006
53.3 mm (2.1 in)
2007
45.7 mm (1.8 in)
2008
33.8 mm (1.3 in)
2009
56.4 mm (2.2 in)
2010
68.6 mm (2.7 in)
2011
77.7 mm (3.1 in)
2012
108.0 mm (4.3 in)
2013
100.1 mm (3.9 in)
2014
132.1 mm (5.2 in)
2015
36.8 mm (1.4 in)
2016
73.2 mm (2.9 in)
2017
43.2 mm (1.7 in)
2018
70.4 mm (2.8 in)
2019
42.4 mm (1.7 in)
2020
44.7 mm (1.8 in)
2021
56.6 mm (2.2 in)
2022
44.5 mm (1.8 in)
2023
87.1 mm (3.4 in)
2024
90.7 mm (3.6 in)
2025
51.6 mm (2.0 in)
2026
31.0 mm (1.2 in)
Wettest five days (Rx5day)
The wettest five days of the year at Mt Adams Rs, 1909 to 2026. The record is 259.3 mm (10.2 in) in 1933, marked on the chart; the median year is 115.9 mm (4.6 in).
Wettest five days (Rx5day) at Mt Adams Rs by year
Year
Wettest five days (Rx5day)
1909
66.1 mm (2.6 in)
1910
64.8 mm (2.6 in)
1911
n/a
1912
n/a
1913
n/a
1914
n/a
1915
n/a
1916
n/a
1917
n/a
1918
n/a
1924
101.6 mm (4.0 in)
1925
128.4 mm (5.1 in)
1926
143.0 mm (5.6 in)
1927
131.3 mm (5.2 in)
1928
151.7 mm (6.0 in)
1929
167.5 mm (6.6 in)
1930
87.4 mm (3.4 in)
1931
118.3 mm (4.7 in)
1932
102.9 mm (4.1 in)
1933
259.3 mm (10.2 in)
1934
234.6 mm (9.2 in)
1935
85.3 mm (3.4 in)
1936
159.5 mm (6.3 in)
1937
232.4 mm (9.1 in)
1938
125.2 mm (4.9 in)
1939
163.5 mm (6.4 in)
1940
134.6 mm (5.3 in)
1941
154.7 mm (6.1 in)
1942
158.5 mm (6.2 in)
1943
115.9 mm (4.6 in)
1944
60.0 mm (2.4 in)
1945
147.1 mm (5.8 in)
1946
206.2 mm (8.1 in)
1947
152.8 mm (6.0 in)
1948
143.7 mm (5.7 in)
1949
149.8 mm (5.9 in)
1950
167.8 mm (6.6 in)
1951
134.6 mm (5.3 in)
1952
102.4 mm (4.0 in)
1953
230.9 mm (9.1 in)
1954
109.7 mm (4.3 in)
1955
175.9 mm (6.9 in)
1956
144.5 mm (5.7 in)
1957
67.8 mm (2.7 in)
1958
56.2 mm (2.2 in)
1959
89.1 mm (3.5 in)
1960
82.3 mm (3.2 in)
1961
49.8 mm (2.0 in)
1962
147.2 mm (5.8 in)
1963
114.1 mm (4.5 in)
1964
85.7 mm (3.4 in)
1965
73.9 mm (2.9 in)
1966
48.0 mm (1.9 in)
1967
86.6 mm (3.4 in)
1968
130.0 mm (5.1 in)
1969
115.9 mm (4.6 in)
1970
122.4 mm (4.8 in)
1971
122.4 mm (4.8 in)
1972
168.9 mm (6.6 in)
1973
114.8 mm (4.5 in)
1974
179.1 mm (7.1 in)
1975
124.6 mm (4.9 in)
1976
103.7 mm (4.1 in)
1977
220.5 mm (8.7 in)
1978
80.8 mm (3.2 in)
1979
89.9 mm (3.5 in)
1980
187.9 mm (7.4 in)
1981
153.7 mm (6.1 in)
1982
130.9 mm (5.2 in)
1983
150.7 mm (5.9 in)
1984
105.1 mm (4.1 in)
1985
91.9 mm (3.6 in)
1986
132.2 mm (5.2 in)
1987
174.3 mm (6.9 in)
1988
122.5 mm (4.8 in)
1989
74.4 mm (2.9 in)
1990
134.7 mm (5.3 in)
1991
95.0 mm (3.7 in)
1992
137.8 mm (5.4 in)
1993
104.9 mm (4.1 in)
1994
160.9 mm (6.3 in)
1995
141.9 mm (5.6 in)
1996
113.6 mm (4.5 in)
1997
133.5 mm (5.3 in)
1998
118.1 mm (4.6 in)
1999
114.1 mm (4.5 in)
2000
57.6 mm (2.3 in)
2001
78.7 mm (3.1 in)
2002
92.0 mm (3.6 in)
2003
61.5 mm (2.4 in)
2004
48.0 mm (1.9 in)
2005
81.1 mm (3.2 in)
2006
125.2 mm (4.9 in)
2007
78.7 mm (3.1 in)
2008
84.9 mm (3.3 in)
2009
74.9 mm (2.9 in)
2010
134.7 mm (5.3 in)
2011
96.0 mm (3.8 in)
2012
189.1 mm (7.4 in)
2013
140.5 mm (5.5 in)
2014
150.8 mm (5.9 in)
2015
61.0 mm (2.4 in)
2016
48.6 mm (1.9 in)
2017
22.4 mm (0.9 in)
2018
22.4 mm (0.9 in)
2019
40.1 mm (1.6 in)
2020
26.2 mm (1.0 in)
2021
75.0 mm (3.0 in)
2022
80.6 mm (3.2 in)
2023
131.3 mm (5.2 in)
2024
113.8 mm (4.5 in)
2025
21.6 mm (0.9 in)
2026
29.2 mm (1.1 in)
Longest dry spell (CDD)
The longest dry spell of the year at Mt Adams Rs, 1909 to 2026. The record is 101 days in 1974, marked on the chart; the median year is 42 days.
Longest dry spell (CDD) at Mt Adams Rs by year
Year
Longest dry spell (CDD)
1909
12 days
1910
9 days
1911
n/a
1912
n/a
1913
2 days
1914
n/a
1915
n/a
1916
n/a
1917
n/a
1918
n/a
1924
64 days
1925
90 days
1926
48 days
1927
66 days
1928
31 days
1929
42 days
1930
35 days
1931
72 days
1932
42 days
1933
55 days
1934
59 days
1935
77 days
1936
30 days
1937
33 days
1938
40 days
1939
17 days
1940
14 days
1941
36 days
1942
86 days
1943
49 days
1944
36 days
1945
82 days
1946
58 days
1947
32 days
1948
38 days
1949
41 days
1950
25 days
1951
82 days
1952
56 days
1953
29 days
1954
42 days
1955
48 days
1956
44 days
1957
43 days
1958
96 days
1959
42 days
1960
56 days
1961
30 days
1962
50 days
1963
47 days
1964
28 days
1965
42 days
1966
61 days
1967
79 days
1968
30 days
1969
81 days
1970
89 days
1971
66 days
1972
32 days
1973
85 days
1974
101 days
1975
33 days
1976
24 days
1977
54 days
1978
38 days
1979
34 days
1980
62 days
1981
49 days
1982
39 days
1983
28 days
1984
39 days
1985
54 days
1986
55 days
1987
98 days
1988
67 days
1989
34 days
1990
29 days
1991
38 days
1992
31 days
1993
47 days
1994
69 days
1995
26 days
1996
42 days
1997
37 days
1998
49 days
1999
37 days
2000
87 days
2001
33 days
2002
47 days
2003
67 days
2004
35 days
2005
49 days
2006
45 days
2007
41 days
2008
28 days
2009
57 days
2010
52 days
2011
21 days
2012
85 days
2013
25 days
2014
19 days
2015
22 days
2016
45 days
2017
39 days
2018
31 days
2019
21 days
2020
35 days
2021
43 days
2022
48 days
2023
56 days
2024
29 days
2025
5 days
2026
83 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 Mt Adams Rs falls on 1 June and the median first autumn frost on 12 September, which leaves a median of 105 days between them.
Fitted over all years, the growing season changes by +4.8 days per decade at this station.
Frost dates and growing season at Mt Adams Rs
Measure
Median, all years
Earliest period
Recent period (1963 to 2024)
Recent against earliest
Fitted trend
Last spring frost
1 June
n/a
30 May
n/a
-1.3 days per decade
First autumn frost
12 September
n/a
15 September
n/a
+3.5 days per decade
Growing days
105 days
n/a
112 days
n/a
+4.8 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
43 years, 1925 to 1993
A day with at least 61.5 mm (2.4 in) of rain is expected about once in 2 years. A day with at least 149.6 mm (5.9 in) of rain is expected about once in 100 years.
Rainfall return levels at Mt Adams Rs: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
61.5 mm (2.4 in)
5 years
83.8 mm (3.3 in)
10 years
99.0 mm (3.9 in)
25 years
118.9 mm (4.7 in)
50 years
134.1 mm (5.3 in)
Longer than the 43 years of record
100 years
149.6 mm (5.9 in)
Longer than the 43 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, 43 years of values from 1925 to 1993.
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: 182.9 mm (7.2 in) in 1934; 110.5 mm (4.4 in) in 1974; 99.1 mm (3.9 in) in 1933.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Mt Adams Rs standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Mt Adams Rs 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.