Record envelope, standing records and threshold days for Aberdeen 20NNE (USC00450013), Washington, United States, with 78 years of record.
Key Facts for Aberdeen 20NNE
Aberdeen 20NNE (USC00450013) is a weather station in Washington, United States at 47.26 latitude and -123.71 longitude, 133 m (435 ft) above sea level.
The station reports from 1927 to 2004, 78 years of record.
1,464 records set at Aberdeen 20NNE still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Aberdeen 20NNE set a monthly record low maximum temperature of 7.8 C (46.0 F) on 22 June 2004.
About the Station
Location: Washington, United States, 47.26 latitude, -123.71 longitude.
Elevation: 133 m (435 ft).
Period of record: 1927 to 2004, 78 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 Aberdeen 20NNE. 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 Aberdeen 20NNE, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
15.0 C (59.0 F)
-13.3 C (8.1 F)
n/a
n/a
Feb
23.3 C (73.9 F)
-13.9 C (7.0 F)
n/a
n/a
Mar
23.3 C (73.9 F)
-8.3 C (17.1 F)
n/a
n/a
Apr
29.4 C (84.9 F)
-3.3 C (26.1 F)
n/a
n/a
May
36.7 C (98.1 F)
-5.6 C (21.9 F)
n/a
n/a
Jun
35.0 C (95.0 F)
-1.7 C (28.9 F)
n/a
n/a
Jul
37.8 C (100.0 F)
1.7 C (35.1 F)
n/a
n/a
Aug
37.8 C (100.0 F)
-2.8 C (27.0 F)
n/a
n/a
Sep
33.9 C (93.0 F)
-1.1 C (30.0 F)
n/a
n/a
Oct
26.1 C (79.0 F)
-5.0 C (23.0 F)
n/a
n/a
Nov
21.7 C (71.1 F)
-12.2 C (10.0 F)
n/a
n/a
Dec
15.6 C (60.1 F)
-16.1 C (3.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Aberdeen 20NNE still stand. 1958 holds the most, with 86.
Standing records at Aberdeen 20NNE by the year they were set
Year set
Standing records
1927
17
1957
23
1958
86
1959
38
1960
35
1961
46
1962
43
1963
48
1964
40
1965
28
1966
28
1967
33
1968
38
1969
37
1970
37
1971
36
1972
62
1973
44
1974
40
1975
46
1976
38
1977
26
1978
24
1979
14
1980
31
1981
16
1982
28
1983
12
1984
23
1985
35
1986
33
1987
36
1988
19
1989
29
1990
34
1991
13
1992
20
1993
20
1994
16
1995
29
1996
26
1997
26
1998
14
1999
12
2000
11
2001
7
2002
15
2003
32
2004
20
All-Time Record Progression
2 new records
2 all-time records were set at Aberdeen 20NNE between 19 January 1968 and 15 July 1991. Each dot is a new record.
When Aberdeen 20NNE set new all-time records
Date
Kind
Detail
1968-01-19
Record daily precipitation
Record daily precipitation 216.2 mm (8.5 in)
1991-07-15
Record high minimum temperature
Record high minimum temperature 17.8 C (64.0 F)
Wettest Day of Each Month
Jan: 216.2 mm (8.5 in)
The wettest day on record for each calendar month at Aberdeen 20NNE. The most was 216.2 mm (8.5 in) on 19 January 1968.
Record daily precipitation for each month at Aberdeen 20NNE
Month
Record daily precipitation (mm)
Date
Jan
216.2 mm (8.5 in)
19 January 1968
Feb
159.5 mm (6.3 in)
9 February 1951
Mar
185.4 mm (7.3 in)
19 March 1997
Apr
145.3 mm (5.7 in)
29 April 1959
May
91.4 mm (3.6 in)
1 May 1940
Jun
128.3 mm (5.1 in)
12 June 2000
Jul
123.2 mm (4.9 in)
16 July 1934
Aug
110.2 mm (4.3 in)
22 August 2001
Sep
144.5 mm (5.7 in)
17 September 1997
Oct
152.4 mm (6.0 in)
31 October 1942
Nov
198.1 mm (7.8 in)
3 November 1955
Dec
178.3 mm (7.0 in)
2 December 1977
Period of Record Coverage
1927 to 2004
Complete yearUnder 90 percent of days
50 years of record at Aberdeen 20NNE, 1927 to 2004. 8 years have data for under 90 percent of days and are left out of rankings: 1927, 1948, 1957, 1965, 2001, 2002, 2003, 2004.
Cooler than the station meanWarmer than the station mean
One stripe for each of 43 complete years at Aberdeen 20NNE, 1958 to 2003. Blue stripes are years cooler than the station's own mean of 9.4 C (48.9 F); red stripes are warmer. The coolest year was 1975, at 8.0 C (46.4 F), and the warmest was 1958, at 11.9 C (53.4 F). The strongest colour marks a difference of 2.6 C (4.7 F).
Annual mean temperature at Aberdeen 20NNE as warming stripes, 1958 to 2003
Year
Annual mean temperature
Difference from the station mean
1958
11.9 C
+2.51 C
1959
10.4 C
+0.99 C
1960
10.3 C
+0.92 C
1961
9.3 C
-0.10 C
1962
9.3 C
-0.08 C
1963
9.8 C
+0.43 C
1966
9.5 C
+0.15 C
1967
9.7 C
+0.34 C
1968
9.1 C
-0.27 C
1969
8.7 C
-0.69 C
1970
8.8 C
-0.55 C
1971
8.3 C
-1.10 C
1972
8.4 C
-0.95 C
1973
8.6 C
-0.75 C
1974
8.7 C
-0.67 C
1975
8.0 C
-1.39 C
1976
8.4 C
-0.97 C
1977
8.5 C
-0.84 C
1978
9.4 C
+0.03 C
1979
9.5 C
+0.09 C
1980
8.9 C
-0.44 C
1981
9.3 C
-0.06 C
1982
8.5 C
-0.84 C
1983
9.3 C
-0.06 C
1984
8.4 C
-0.94 C
1985
8.4 C
-0.94 C
1986
10.0 C
+0.62 C
1987
10.1 C
+0.70 C
1988
9.7 C
+0.31 C
1989
9.4 C
+0.02 C
1990
9.7 C
+0.33 C
1991
9.8 C
+0.39 C
1992
10.7 C
+1.27 C
1993
9.5 C
+0.09 C
1994
9.7 C
+0.34 C
1995
10.3 C
+0.93 C
1996
9.5 C
+0.07 C
1997
10.0 C
+0.58 C
1998
10.1 C
+0.76 C
1999
9.2 C
-0.21 C
2000
9.3 C
-0.13 C
2001
9.2 C
-0.21 C
2003
9.5 C
+0.16 C
The fitted trend in annual mean temperature here over 1958 to 2003 is 0.02 C (-0.16 to 0.20) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.03 F (-0.30 to 0.36) 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 Aberdeen 20NNE
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.02 C (-0.16 to 0.20) per decade
0.03 F (-0.30 to 0.36) per decade
1958 to 2003
43
Not clearly different from zero
Mean daily maximum
-0.3 C (-0.5 to -0.1) per decade
-0.5 F (-0.9 to -0.1) per decade
1958 to 2003
43
Fall
Mean daily minimum
0.3 C (0.1 to 0.5) per decade
0.6 F (0.3 to 0.9) per decade
1958 to 2003
43
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
1927 to 2004
Yearly extremes at Aberdeen 20NNE: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
37.8 C (100.0 F)
1927
33.3 C (91.9 F)
50
Coldest night (TNn)
-16.1 C (3.0 F)
1983
-7.2 C (19.0 F)
50
Wettest day (Rx1day)
216.2 mm (8.5 in)
1968
122.3 mm (4.8 in)
78
Wettest five days (Rx5day)
545.3 mm (21.5 in)
1935
282.3 mm (11.1 in)
78
Longest dry spell (CDD)
59 days
1931
25 days
78
Hottest day (TXx)
The hottest day of the year at Aberdeen 20NNE, 1927 to 2004. The record is 37.8 C (100.0 F) in 1927, marked on the chart; the median year is 33.3 C (91.9 F).
Hottest day (TXx) at Aberdeen 20NNE by year
Year
Hottest day (TXx)
1927
37.8 C (100.0 F)
1928
n/a
1929
n/a
1930
n/a
1931
n/a
1932
n/a
1933
n/a
1934
n/a
1935
n/a
1936
n/a
1937
n/a
1938
n/a
1939
n/a
1940
n/a
1941
n/a
1942
n/a
1943
n/a
1944
n/a
1945
n/a
1946
n/a
1947
n/a
1948
13.3 C (55.9 F)
1949
n/a
1950
n/a
1951
n/a
1952
n/a
1953
n/a
1954
n/a
1955
n/a
1956
n/a
1957
31.1 C (88.0 F)
1958
36.1 C (97.0 F)
1959
35.0 C (95.0 F)
1960
34.4 C (93.9 F)
1961
36.7 C (98.1 F)
1962
30.6 C (87.1 F)
1963
33.3 C (91.9 F)
1964
30.6 C (87.1 F)
1965
37.8 C (100.0 F)
1966
31.7 C (89.1 F)
1967
35.0 C (95.0 F)
1968
33.9 C (93.0 F)
1969
33.3 C (91.9 F)
1970
35.0 C (95.0 F)
1971
35.6 C (96.1 F)
1972
34.4 C (93.9 F)
1973
31.7 C (89.1 F)
1974
31.7 C (89.1 F)
1975
31.1 C (88.0 F)
1976
29.4 C (84.9 F)
1977
35.0 C (95.0 F)
1978
35.0 C (95.0 F)
1979
35.0 C (95.0 F)
1980
33.9 C (93.0 F)
1981
37.8 C (100.0 F)
1982
35.0 C (95.0 F)
1983
36.7 C (98.1 F)
1984
31.7 C (89.1 F)
1985
33.3 C (91.9 F)
1986
31.7 C (89.1 F)
1987
32.8 C (91.0 F)
1988
33.9 C (93.0 F)
1989
31.1 C (88.0 F)
1990
33.9 C (93.0 F)
1991
33.3 C (91.9 F)
1992
33.3 C (91.9 F)
1993
33.9 C (93.0 F)
1994
33.3 C (91.9 F)
1995
33.3 C (91.9 F)
1996
34.4 C (93.9 F)
1997
30.6 C (87.1 F)
1998
33.3 C (91.9 F)
1999
30.6 C (87.1 F)
2000
32.2 C (90.0 F)
2001
31.1 C (88.0 F)
2002
31.7 C (89.1 F)
2003
32.8 C (91.0 F)
2004
30.0 C (86.0 F)
Coldest night (TNn)
The coldest night of the year at Aberdeen 20NNE, 1927 to 2004. The record is -16.1 C (3.0 F) in 1983, marked on the chart; the median year is -7.2 C (19.0 F).
Coldest night (TNn) at Aberdeen 20NNE by year
Year
Coldest night (TNn)
1927
-1.1 C (30.0 F)
1928
n/a
1929
n/a
1930
n/a
1931
n/a
1932
n/a
1933
n/a
1934
n/a
1935
n/a
1936
n/a
1937
n/a
1938
n/a
1939
n/a
1940
n/a
1941
n/a
1942
n/a
1943
n/a
1944
n/a
1945
n/a
1946
n/a
1947
n/a
1948
-1.1 C (30.0 F)
1949
n/a
1950
n/a
1951
n/a
1952
n/a
1953
n/a
1954
n/a
1955
n/a
1956
n/a
1957
-3.9 C (25.0 F)
1958
-6.1 C (21.0 F)
1959
-11.7 C (10.9 F)
1960
-7.2 C (19.0 F)
1961
-6.1 C (21.0 F)
1962
-11.7 C (10.9 F)
1963
-11.7 C (10.9 F)
1964
-6.7 C (19.9 F)
1965
-5.6 C (21.9 F)
1966
-3.9 C (25.0 F)
1967
-7.2 C (19.0 F)
1968
-11.1 C (12.0 F)
1969
-12.8 C (9.0 F)
1970
-6.1 C (21.0 F)
1971
-8.9 C (16.0 F)
1972
-15.0 C (5.0 F)
1973
-10.6 C (12.9 F)
1974
-10.6 C (12.9 F)
1975
-5.6 C (21.9 F)
1976
-6.7 C (19.9 F)
1977
-8.9 C (16.0 F)
1978
-14.4 C (6.1 F)
1979
-13.3 C (8.1 F)
1980
-12.8 C (9.0 F)
1981
-4.4 C (24.1 F)
1982
-11.7 C (10.9 F)
1983
-16.1 C (3.0 F)
1984
-7.2 C (19.0 F)
1985
-12.2 C (10.0 F)
1986
-6.7 C (19.9 F)
1987
-4.4 C (24.1 F)
1988
-5.0 C (23.0 F)
1989
-13.9 C (7.0 F)
1990
-12.8 C (9.0 F)
1991
-5.0 C (23.0 F)
1992
-7.8 C (18.0 F)
1993
-8.9 C (16.0 F)
1994
-5.6 C (21.9 F)
1995
-5.6 C (21.9 F)
1996
-8.3 C (17.1 F)
1997
-6.1 C (21.0 F)
1998
-10.6 C (12.9 F)
1999
-2.2 C (28.0 F)
2000
-4.4 C (24.1 F)
2001
-3.3 C (26.1 F)
2002
-7.2 C (19.0 F)
2003
-4.4 C (24.1 F)
2004
-8.3 C (17.1 F)
Wettest day (Rx1day)
The wettest day of the year at Aberdeen 20NNE, 1927 to 2004. The record is 216.2 mm (8.5 in) in 1968, marked on the chart; the median year is 122.3 mm (4.8 in).
Wettest day (Rx1day) at Aberdeen 20NNE by year
Year
Wettest day (Rx1day)
1927
106.7 mm (4.2 in)
1928
59.7 mm (2.4 in)
1929
81.8 mm (3.2 in)
1930
72.1 mm (2.8 in)
1931
86.1 mm (3.4 in)
1932
112.0 mm (4.4 in)
1933
104.1 mm (4.1 in)
1934
123.2 mm (4.9 in)
1935
152.4 mm (6.0 in)
1936
96.5 mm (3.8 in)
1937
120.7 mm (4.8 in)
1938
154.2 mm (6.1 in)
1939
118.4 mm (4.7 in)
1940
110.0 mm (4.3 in)
1941
113.0 mm (4.4 in)
1942
152.4 mm (6.0 in)
1943
171.2 mm (6.7 in)
1944
71.1 mm (2.8 in)
1945
131.6 mm (5.2 in)
1946
116.3 mm (4.6 in)
1947
129.5 mm (5.1 in)
1948
97.8 mm (3.9 in)
1949
158.2 mm (6.2 in)
1950
111.0 mm (4.4 in)
1951
159.5 mm (6.3 in)
1952
106.2 mm (4.2 in)
1953
147.3 mm (5.8 in)
1954
114.6 mm (4.5 in)
1955
198.1 mm (7.8 in)
1956
137.4 mm (5.4 in)
1957
70.6 mm (2.8 in)
1958
91.7 mm (3.6 in)
1959
147.3 mm (5.8 in)
1960
138.4 mm (5.4 in)
1961
127.8 mm (5.0 in)
1962
157.7 mm (6.2 in)
1963
115.6 mm (4.6 in)
1964
112.5 mm (4.4 in)
1965
97.3 mm (3.8 in)
1966
119.6 mm (4.7 in)
1967
99.1 mm (3.9 in)
1968
216.2 mm (8.5 in)
1969
77.7 mm (3.1 in)
1970
101.6 mm (4.0 in)
1971
127.3 mm (5.0 in)
1972
168.4 mm (6.6 in)
1973
88.9 mm (3.5 in)
1974
106.7 mm (4.2 in)
1975
153.2 mm (6.0 in)
1976
111.3 mm (4.4 in)
1977
178.3 mm (7.0 in)
1978
94.7 mm (3.7 in)
1979
134.6 mm (5.3 in)
1980
151.4 mm (6.0 in)
1981
158.0 mm (6.2 in)
1982
135.1 mm (5.3 in)
1983
117.6 mm (4.6 in)
1984
132.8 mm (5.2 in)
1985
110.7 mm (4.4 in)
1986
135.1 mm (5.3 in)
1987
116.6 mm (4.6 in)
1988
118.9 mm (4.7 in)
1989
98.8 mm (3.9 in)
1990
175.8 mm (6.9 in)
1991
128.3 mm (5.1 in)
1992
76.5 mm (3.0 in)
1993
130.6 mm (5.1 in)
1994
140.0 mm (5.5 in)
1995
137.2 mm (5.4 in)
1996
121.7 mm (4.8 in)
1997
185.4 mm (7.3 in)
1998
134.1 mm (5.3 in)
1999
122.9 mm (4.8 in)
2000
128.3 mm (5.1 in)
2001
138.4 mm (5.4 in)
2002
146.1 mm (5.8 in)
2003
139.7 mm (5.5 in)
2004
77.0 mm (3.0 in)
Wettest five days (Rx5day)
The wettest five days of the year at Aberdeen 20NNE, 1927 to 2004. The record is 545.3 mm (21.5 in) in 1935, marked on the chart; the median year is 282.3 mm (11.1 in).
Wettest five days (Rx5day) at Aberdeen 20NNE by year
Year
Wettest five days (Rx5day)
1927
188.8 mm (7.4 in)
1928
170.9 mm (6.7 in)
1929
177.9 mm (7.0 in)
1930
178.2 mm (7.0 in)
1931
240.7 mm (9.5 in)
1932
303.8 mm (12.0 in)
1933
357.9 mm (14.1 in)
1934
281.4 mm (11.1 in)
1935
545.3 mm (21.5 in)
1936
280.9 mm (11.1 in)
1937
239.5 mm (9.4 in)
1938
252.3 mm (9.9 in)
1939
295.4 mm (11.6 in)
1940
262.1 mm (10.3 in)
1941
238.3 mm (9.4 in)
1942
258.3 mm (10.2 in)
1943
354.1 mm (13.9 in)
1944
219.1 mm (8.6 in)
1945
230.4 mm (9.1 in)
1946
223.7 mm (8.8 in)
1947
361.3 mm (14.2 in)
1948
254.3 mm (10.0 in)
1949
347.0 mm (13.7 in)
1950
253.5 mm (10.0 in)
1951
433.2 mm (17.1 in)
1952
202.4 mm (8.0 in)
1953
305.0 mm (12.0 in)
1954
306.2 mm (12.1 in)
1955
327.9 mm (12.9 in)
1956
329.7 mm (13.0 in)
1957
190.3 mm (7.5 in)
1958
206.3 mm (8.1 in)
1959
394.2 mm (15.5 in)
1960
229.0 mm (9.0 in)
1961
349.0 mm (13.7 in)
1962
283.2 mm (11.1 in)
1963
346.7 mm (13.6 in)
1964
207.2 mm (8.2 in)
1965
226.0 mm (8.9 in)
1966
280.5 mm (11.0 in)
1967
251.5 mm (9.9 in)
1968
393.7 mm (15.5 in)
1969
212.1 mm (8.4 in)
1970
251.5 mm (9.9 in)
1971
292.4 mm (11.5 in)
1972
348.0 mm (13.7 in)
1973
313.5 mm (12.3 in)
1974
277.3 mm (10.9 in)
1975
400.0 mm (15.7 in)
1976
224.3 mm (8.8 in)
1977
290.3 mm (11.4 in)
1978
153.9 mm (6.1 in)
1979
470.4 mm (18.5 in)
1980
306.9 mm (12.1 in)
1981
375.4 mm (14.8 in)
1982
458.2 mm (18.0 in)
1983
325.7 mm (12.8 in)
1984
278.4 mm (11.0 in)
1985
283.1 mm (11.1 in)
1986
395.2 mm (15.6 in)
1987
255.3 mm (10.1 in)
1988
212.4 mm (8.4 in)
1989
242.8 mm (9.6 in)
1990
355.0 mm (14.0 in)
1991
275.1 mm (10.8 in)
1992
297.1 mm (11.7 in)
1993
199.1 mm (7.8 in)
1994
365.2 mm (14.4 in)
1995
324.0 mm (12.8 in)
1996
285.9 mm (11.3 in)
1997
449.0 mm (17.7 in)
1998
380.3 mm (15.0 in)
1999
362.7 mm (14.3 in)
2000
189.5 mm (7.5 in)
2001
398.6 mm (15.7 in)
2002
240.0 mm (9.4 in)
2003
413.0 mm (16.3 in)
2004
207.7 mm (8.2 in)
Longest dry spell (CDD)
The longest dry spell of the year at Aberdeen 20NNE, 1927 to 2004. The record is 59 days in 1931, marked on the chart; the median year is 25 days.
Longest dry spell (CDD) at Aberdeen 20NNE by year
Year
Longest dry spell (CDD)
1927
41 days
1928
15 days
1929
23 days
1930
48 days
1931
59 days
1932
19 days
1933
31 days
1934
31 days
1935
22 days
1936
40 days
1937
42 days
1938
33 days
1939
35 days
1940
26 days
1941
22 days
1942
27 days
1943
24 days
1944
28 days
1945
33 days
1946
25 days
1947
21 days
1948
13 days
1949
17 days
1950
30 days
1951
44 days
1952
21 days
1953
20 days
1954
23 days
1955
23 days
1956
26 days
1957
14 days
1958
33 days
1959
27 days
1960
55 days
1961
29 days
1962
17 days
1963
17 days
1964
8 days
1965
21 days
1966
18 days
1967
25 days
1968
27 days
1969
23 days
1970
19 days
1971
22 days
1972
33 days
1973
39 days
1974
30 days
1975
18 days
1976
18 days
1977
24 days
1978
16 days
1979
32 days
1980
21 days
1981
39 days
1982
21 days
1983
25 days
1984
25 days
1985
30 days
1986
42 days
1987
21 days
1988
33 days
1989
25 days
1990
39 days
1991
32 days
1992
29 days
1993
23 days
1994
22 days
1995
22 days
1996
18 days
1997
41 days
1998
31 days
1999
17 days
2000
21 days
2001
17 days
2002
27 days
2003
22 days
2004
12 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 Aberdeen 20NNE falls on 1 May and the median first autumn frost on 18 October, which leaves a median of 169 days between them.
Fitted over all years, the growing season changes by +10.6 days per decade at this station.
Frost dates and growing season at Aberdeen 20NNE
Measure
Median, all years
Earliest period
Recent period (1973 to 2003)
Recent against earliest
Fitted trend
Last spring frost
1 May
n/a
25 April
n/a
-6.8 days per decade
First autumn frost
18 October
n/a
22 October
n/a
+3.8 days per decade
Growing days
169 days
n/a
177 days
n/a
+10.6 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
74 years, 1927 to 2003
A day with at least 123.8 mm (4.9 in) of rain is expected about once in 2 years. A day with at least 202.2 mm (8.0 in) of rain is expected about once in 100 years.
Rainfall return levels at Aberdeen 20NNE: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
123.8 mm (4.9 in)
5 years
150.3 mm (5.9 in)
10 years
165.4 mm (6.5 in)
25 years
182.0 mm (7.2 in)
50 years
192.7 mm (7.6 in)
100 years
202.2 mm (8.0 in)
Longer than the 74 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, 74 years of values from 1927 to 2003.
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: 216.2 mm (8.5 in) in 1968; 198.1 mm (7.8 in) in 1955; 185.4 mm (7.3 in) in 1997.
Station Changes
2 suspected
2 changes were suspected in the annual mean temperature of Aberdeen 20NNE, at 1973 and 1985. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1973 ran 0.2 C (0.4 F) lower than in the years before (possible change).
Relative to 5 neighbouring stations, the station's annual mean temperature from 1985 ran 0.4 C (0.7 F) higher than in the years before (likely change).
Suspected changes in the annual mean temperature at Aberdeen 20NNE, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1973
-0.2
-0.4
possible
5
1985
+0.4
+0.7
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 Aberdeen 20NNE standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Aberdeen 20NNE 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.