Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Imuris (Smn). 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 Imuris (Smn), with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
40.0 C (104.0 F)
-11.1 C (12.0 F)
n/a
n/a
Feb
40.6 C (105.1 F)
-9.4 C (15.1 F)
n/a
n/a
Mar
37.8 C (100.0 F)
-9.4 C (15.1 F)
n/a
n/a
Apr
40.6 C (105.1 F)
-3.3 C (26.1 F)
n/a
n/a
May
45.6 C (114.1 F)
0.0 C (32.0 F)
n/a
n/a
Jun
46.7 C (116.1 F)
5.0 C (41.0 F)
n/a
n/a
Jul
46.7 C (116.1 F)
5.6 C (42.1 F)
n/a
n/a
Aug
45.6 C (114.1 F)
10.6 C (51.1 F)
n/a
n/a
Sep
46.7 C (116.1 F)
0.6 C (33.1 F)
n/a
n/a
Oct
41.7 C (107.1 F)
-5.0 C (23.0 F)
n/a
n/a
Nov
40.0 C (104.0 F)
-7.2 C (19.0 F)
n/a
n/a
Dec
40.0 C (104.0 F)
-12.2 C (10.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Imuris (Smn) still stand. 1987 holds the most, with 124.
Standing records at Imuris (Smn) by the year they were set
Year set
Standing records
1938
11
1943
5
1944
30
1945
1
1946
28
1947
66
1948
26
1949
30
1950
20
1951
37
1952
24
1953
26
1954
30
1955
21
1956
18
1957
25
1958
36
1959
17
1960
23
1961
9
1962
17
1963
9
1964
9
1965
37
1966
17
1967
34
1968
32
1969
31
1970
26
1971
24
1972
35
1973
18
1974
9
1975
27
1976
11
1977
8
1978
15
1979
20
1980
14
1981
7
1982
10
1983
19
1984
17
1985
22
1986
108
1987
124
1988
10
1989
8
1990
14
1991
15
1992
7
1993
5
1994
8
1995
3
1996
8
1997
10
1998
7
1999
6
2000
11
2001
6
2002
9
2003
12
2004
26
2005
15
2006
15
2007
17
2008
10
2009
14
2010
16
2011
17
2012
12
All-Time Record Progression
4 new records
4 all-time records were set at Imuris (Smn) between 8 December 1978 and 11 November 1994. Each dot is a new record.
When Imuris (Smn) set new all-time records
Date
Kind
Detail
1978-12-08
Record low minimum temperature
Record low minimum temperature -12.2 C (10.0 F)
1981-07-12
Record daily precipitation
Record daily precipitation 89.9 mm (3.5 in)
1984-08-08
Record daily precipitation
Record daily precipitation 95.0 mm (3.7 in)
1994-11-11
Record daily precipitation
Record daily precipitation 126.0 mm (5.0 in)
Wettest Day of Each Month
Nov: 126.0 mm (5.0 in)
The wettest day on record for each calendar month at Imuris (Smn). The most was 126.0 mm (5.0 in) on 11 November 1994.
Record daily precipitation for each month at Imuris (Smn)
Month
Record daily precipitation (mm)
Date
Jan
65.8 mm (2.6 in)
17 January 1993
Feb
49.8 mm (2.0 in)
10 February 1976
Mar
52.3 mm (2.1 in)
9 March 1968
Apr
45.0 mm (1.8 in)
5 April 2001
May
24.9 mm (1.0 in)
13 May 1987
Jun
59.9 mm (2.4 in)
3 June 1952
Jul
89.9 mm (3.5 in)
12 July 1981
Aug
95.0 mm (3.7 in)
8 August 1984
Sep
82.8 mm (3.3 in)
23 September 1958
Oct
70.9 mm (2.8 in)
11 October 2000
Nov
126.0 mm (5.0 in)
11 November 1994
Dec
79.8 mm (3.1 in)
5 December 1994
Period of Record Coverage
1938 to 2012
Complete yearUnder 90 percent of days
71 years of record at Imuris (Smn), 1938 to 2012. 5 years have data for under 90 percent of days and are left out of rankings: 1938, 1943, 1944, 1945, 1947.
Cooler than the station meanWarmer than the station mean
One stripe for each of 59 complete years at Imuris (Smn), 1949 to 2011. Blue stripes are years cooler than the station's own mean of 19.4 C (66.9 F); red stripes are warmer. The coolest year was 1975, at 17.8 C (64.1 F), and the warmest was 1972, at 21.4 C (70.5 F). The strongest colour marks a difference of 2.0 C (3.6 F).
Annual mean temperature at Imuris (Smn) as warming stripes, 1949 to 2011
Year
Annual mean temperature
Difference from the station mean
1949
19.6 C
+0.14 C
1950
21.2 C
+1.75 C
1951
19.8 C
+0.37 C
1952
19.6 C
+0.19 C
1953
19.9 C
+0.47 C
1954
20.7 C
+1.24 C
1955
19.1 C
-0.29 C
1956
19.8 C
+0.42 C
1957
19.9 C
+0.45 C
1958
19.7 C
+0.33 C
1959
19.6 C
+0.17 C
1960
19.4 C
0.00 C
1961
19.3 C
-0.08 C
1962
19.9 C
+0.45 C
1963
20.1 C
+0.70 C
1964
19.1 C
-0.32 C
1965
19.9 C
+0.50 C
1966
20.6 C
+1.23 C
1967
20.4 C
+1.03 C
1968
20.4 C
+1.01 C
1970
20.6 C
+1.16 C
1971
20.2 C
+0.77 C
1972
21.4 C
+1.98 C
1973
20.6 C
+1.23 C
1974
18.4 C
-1.05 C
1975
17.8 C
-1.59 C
1976
18.5 C
-0.96 C
1977
19.2 C
-0.21 C
1978
18.8 C
-0.61 C
1979
18.7 C
-0.67 C
1980
19.2 C
-0.22 C
1981
19.5 C
+0.06 C
1982
18.3 C
-1.08 C
1983
18.0 C
-1.46 C
1984
17.9 C
-1.53 C
1985
18.1 C
-1.34 C
1986
18.5 C
-0.92 C
1987
18.2 C
-1.18 C
1988
18.6 C
-0.81 C
1990
18.8 C
-0.60 C
1991
18.3 C
-1.09 C
1992
18.9 C
-0.53 C
1993
19.6 C
+0.20 C
1994
20.0 C
+0.63 C
1995
19.4 C
+0.02 C
1996
19.5 C
+0.12 C
1997
18.6 C
-0.85 C
1999
19.3 C
-0.09 C
2000
19.7 C
+0.27 C
2001
19.3 C
-0.16 C
2003
19.9 C
+0.47 C
2004
19.5 C
+0.06 C
2005
19.9 C
+0.44 C
2006
19.6 C
+0.18 C
2007
19.8 C
+0.41 C
2008
19.6 C
+0.16 C
2009
19.7 C
+0.24 C
2010
18.7 C
-0.68 C
2011
19.0 C
-0.37 C
The annual mean temperature here has fallen by 0.14 C (0.03 to 0.25) per decade over 1949 to 2011. In Fahrenheit: 0.2 F (0.1 to 0.4) per decade. The slope is a straight line fitted to 59 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Imuris (Smn)
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.14 C (-0.25 to -0.03) per decade
-0.2 F (-0.4 to -0.1) per decade
1949 to 2011
59
Fall
Mean daily maximum
-0.02 C (-0.19 to 0.16) per decade
-0.03 F (-0.34 to 0.28) per decade
1949 to 2011
59
Not clearly different from zero
Mean daily minimum
-0.3 C (-0.4 to -0.1) per decade
-0.5 F (-0.8 to -0.2) per decade
1949 to 2011
59
Fall
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
1938 to 2012
Yearly extremes at Imuris (Smn): the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
46.7 C (116.1 F)
1946
43.9 C (111.0 F)
71
Coldest night (TNn)
-12.2 C (10.0 F)
1978
-4.4 C (24.1 F)
71
Wettest day (Rx1day)
126.0 mm (5.0 in)
1994
49.8 mm (2.0 in)
71
Wettest five days (Rx5day)
165.3 mm (6.5 in)
1994
71.9 mm (2.8 in)
71
Longest dry spell (CDD)
160 days
1956
74 days
71
Hottest day (TXx)
The hottest day of the year at Imuris (Smn), 1938 to 2012. The record is 46.7 C (116.1 F) in 1946, marked on the chart; the median year is 43.9 C (111.0 F).
Hottest day (TXx) at Imuris (Smn) by year
Year
Hottest day (TXx)
1938
45.0 C (113.0 F)
1943
38.9 C (102.0 F)
1944
45.0 C (113.0 F)
1945
26.7 C (80.1 F)
1946
46.7 C (116.1 F)
1947
45.0 C (113.0 F)
1948
42.8 C (109.0 F)
1949
43.9 C (111.0 F)
1950
43.9 C (111.0 F)
1951
43.9 C (111.0 F)
1952
42.8 C (109.0 F)
1953
43.9 C (111.0 F)
1954
42.8 C (109.0 F)
1955
45.0 C (113.0 F)
1956
45.0 C (113.0 F)
1957
45.0 C (113.0 F)
1958
45.6 C (114.1 F)
1959
43.9 C (111.0 F)
1960
45.6 C (114.1 F)
1961
43.9 C (111.0 F)
1962
42.8 C (109.0 F)
1963
43.9 C (111.0 F)
1964
45.0 C (113.0 F)
1965
45.6 C (114.1 F)
1966
43.9 C (111.0 F)
1967
43.9 C (111.0 F)
1968
46.7 C (116.1 F)
1969
42.8 C (109.0 F)
1970
46.7 C (116.1 F)
1971
46.7 C (116.1 F)
1972
45.6 C (114.1 F)
1973
45.6 C (114.1 F)
1974
43.3 C (109.9 F)
1975
41.7 C (107.1 F)
1976
43.9 C (111.0 F)
1977
42.8 C (109.0 F)
1978
43.9 C (111.0 F)
1979
45.0 C (113.0 F)
1980
43.9 C (111.0 F)
1981
43.9 C (111.0 F)
1982
43.9 C (111.0 F)
1983
43.9 C (111.0 F)
1984
42.8 C (109.0 F)
1985
43.9 C (111.0 F)
1986
45.0 C (113.0 F)
1987
46.7 C (116.1 F)
1988
41.7 C (107.1 F)
1989
43.3 C (109.9 F)
1990
45.0 C (113.0 F)
1991
41.7 C (107.1 F)
1992
41.7 C (107.1 F)
1993
43.9 C (111.0 F)
1994
42.8 C (109.0 F)
1995
41.7 C (107.1 F)
1996
40.6 C (105.1 F)
1997
40.6 C (105.1 F)
1998
41.7 C (107.1 F)
1999
40.0 C (104.0 F)
2000
40.6 C (105.1 F)
2001
42.8 C (109.0 F)
2002
43.9 C (111.0 F)
2003
45.0 C (113.0 F)
2004
43.3 C (109.9 F)
2005
46.1 C (115.0 F)
2006
46.7 C (116.1 F)
2007
46.1 C (115.0 F)
2008
45.0 C (113.0 F)
2009
42.2 C (108.0 F)
2010
42.8 C (109.0 F)
2011
44.4 C (111.9 F)
2012
43.3 C (109.9 F)
Coldest night (TNn)
The coldest night of the year at Imuris (Smn), 1938 to 2012. The record is -12.2 C (10.0 F) in 1978, marked on the chart; the median year is -4.4 C (24.1 F).
Coldest night (TNn) at Imuris (Smn) by year
Year
Coldest night (TNn)
1938
0.0 C (32.0 F)
1943
18.9 C (66.0 F)
1944
0.0 C (32.0 F)
1945
-2.8 C (27.0 F)
1946
0.0 C (32.0 F)
1947
-0.6 C (30.9 F)
1948
-6.1 C (21.0 F)
1949
-5.0 C (23.0 F)
1950
-1.1 C (30.0 F)
1951
-1.1 C (30.0 F)
1952
-3.3 C (26.1 F)
1953
-5.0 C (23.0 F)
1954
-5.0 C (23.0 F)
1955
-5.0 C (23.0 F)
1956
-5.0 C (23.0 F)
1957
0.0 C (32.0 F)
1958
-4.4 C (24.1 F)
1959
-4.4 C (24.1 F)
1960
-7.2 C (19.0 F)
1961
-1.1 C (30.0 F)
1962
-6.1 C (21.0 F)
1963
-5.0 C (23.0 F)
1964
-3.9 C (25.0 F)
1965
-4.4 C (24.1 F)
1966
0.0 C (32.0 F)
1967
-3.3 C (26.1 F)
1968
-5.0 C (23.0 F)
1969
-1.1 C (30.0 F)
1970
-1.1 C (30.0 F)
1971
-0.6 C (30.9 F)
1972
0.0 C (32.0 F)
1973
0.0 C (32.0 F)
1974
-5.0 C (23.0 F)
1975
-6.1 C (21.0 F)
1976
-5.0 C (23.0 F)
1977
-4.4 C (24.1 F)
1978
-12.2 C (10.0 F)
1979
-5.0 C (23.0 F)
1980
-3.3 C (26.1 F)
1981
-4.4 C (24.1 F)
1982
-4.4 C (24.1 F)
1983
-3.3 C (26.1 F)
1984
-4.4 C (24.1 F)
1985
-8.3 C (17.1 F)
1986
-8.3 C (17.1 F)
1987
-11.1 C (12.0 F)
1988
-6.7 C (19.9 F)
1989
-4.4 C (24.1 F)
1990
-5.0 C (23.0 F)
1991
-3.3 C (26.1 F)
1992
-4.4 C (24.1 F)
1993
-2.2 C (28.0 F)
1994
-3.3 C (26.1 F)
1995
-3.3 C (26.1 F)
1996
-3.3 C (26.1 F)
1997
-4.4 C (24.1 F)
1998
-3.3 C (26.1 F)
1999
-4.4 C (24.1 F)
2000
-5.0 C (23.0 F)
2001
-3.3 C (26.1 F)
2002
-4.4 C (24.1 F)
2003
-6.1 C (21.0 F)
2004
-6.1 C (21.0 F)
2005
-6.7 C (19.9 F)
2006
-6.7 C (19.9 F)
2007
-6.1 C (21.0 F)
2008
-5.0 C (23.0 F)
2009
-5.6 C (21.9 F)
2010
-5.0 C (23.0 F)
2011
-9.4 C (15.1 F)
2012
-4.4 C (24.1 F)
Wettest day (Rx1day)
The wettest day of the year at Imuris (Smn), 1938 to 2012. The record is 126.0 mm (5.0 in) in 1994, marked on the chart; the median year is 49.8 mm (2.0 in).
Wettest day (Rx1day) at Imuris (Smn) by year
Year
Wettest day (Rx1day)
1938
53.8 mm (2.1 in)
1943
30.0 mm (1.2 in)
1944
59.9 mm (2.4 in)
1945
0.0 mm (0.00 in)
1946
56.9 mm (2.2 in)
1947
43.4 mm (1.7 in)
1948
46.0 mm (1.8 in)
1949
49.8 mm (2.0 in)
1950
49.8 mm (2.0 in)
1951
39.9 mm (1.6 in)
1952
59.9 mm (2.4 in)
1953
51.8 mm (2.0 in)
1954
69.9 mm (2.8 in)
1955
61.0 mm (2.4 in)
1956
62.0 mm (2.4 in)
1957
35.8 mm (1.4 in)
1958
82.8 mm (3.3 in)
1959
41.9 mm (1.6 in)
1960
63.8 mm (2.5 in)
1961
30.5 mm (1.2 in)
1962
37.8 mm (1.5 in)
1963
29.0 mm (1.1 in)
1964
45.0 mm (1.8 in)
1965
46.0 mm (1.8 in)
1966
54.9 mm (2.2 in)
1967
70.9 mm (2.8 in)
1968
52.3 mm (2.1 in)
1969
45.0 mm (1.8 in)
1970
34.8 mm (1.4 in)
1971
49.5 mm (1.9 in)
1972
45.0 mm (1.8 in)
1973
74.9 mm (2.9 in)
1974
59.9 mm (2.4 in)
1975
47.0 mm (1.9 in)
1976
49.8 mm (2.0 in)
1977
65.3 mm (2.6 in)
1978
70.9 mm (2.8 in)
1979
57.9 mm (2.3 in)
1980
41.4 mm (1.6 in)
1981
89.9 mm (3.5 in)
1982
46.0 mm (1.8 in)
1983
59.9 mm (2.4 in)
1984
95.0 mm (3.7 in)
1985
47.0 mm (1.9 in)
1986
46.0 mm (1.8 in)
1987
55.9 mm (2.2 in)
1988
46.5 mm (1.8 in)
1989
62.0 mm (2.4 in)
1990
77.0 mm (3.0 in)
1991
38.9 mm (1.5 in)
1992
43.4 mm (1.7 in)
1993
70.9 mm (2.8 in)
1994
126.0 mm (5.0 in)
1995
67.8 mm (2.7 in)
1996
38.9 mm (1.5 in)
1997
59.9 mm (2.4 in)
1998
36.8 mm (1.4 in)
1999
49.8 mm (2.0 in)
2000
70.9 mm (2.8 in)
2001
79.8 mm (3.1 in)
2002
20.8 mm (0.8 in)
2003
21.1 mm (0.8 in)
2004
43.4 mm (1.7 in)
2005
52.1 mm (2.1 in)
2006
62.2 mm (2.4 in)
2007
35.6 mm (1.4 in)
2008
48.3 mm (1.9 in)
2009
29.5 mm (1.2 in)
2010
32.0 mm (1.3 in)
2011
35.8 mm (1.4 in)
2012
31.5 mm (1.2 in)
Wettest five days (Rx5day)
The wettest five days of the year at Imuris (Smn), 1938 to 2012. The record is 165.3 mm (6.5 in) in 1994, marked on the chart; the median year is 71.9 mm (2.8 in).
Wettest five days (Rx5day) at Imuris (Smn) by year
Year
Wettest five days (Rx5day)
1938
58.4 mm (2.3 in)
1943
36.6 mm (1.4 in)
1944
89.7 mm (3.5 in)
1945
0.0 mm (0.00 in)
1946
56.9 mm (2.2 in)
1947
46.7 mm (1.8 in)
1948
62.7 mm (2.5 in)
1949
49.8 mm (2.0 in)
1950
74.7 mm (2.9 in)
1951
71.9 mm (2.8 in)
1952
63.7 mm (2.5 in)
1953
91.7 mm (3.6 in)
1954
80.0 mm (3.1 in)
1955
100.6 mm (4.0 in)
1956
121.2 mm (4.8 in)
1957
44.0 mm (1.7 in)
1958
83.9 mm (3.3 in)
1959
65.0 mm (2.6 in)
1960
85.2 mm (3.4 in)
1961
73.2 mm (2.9 in)
1962
51.1 mm (2.0 in)
1963
80.6 mm (3.2 in)
1964
71.6 mm (2.8 in)
1965
64.1 mm (2.5 in)
1966
112.5 mm (4.4 in)
1967
153.5 mm (6.0 in)
1968
70.1 mm (2.8 in)
1969
85.9 mm (3.4 in)
1970
57.7 mm (2.3 in)
1971
85.6 mm (3.4 in)
1972
93.8 mm (3.7 in)
1973
74.9 mm (2.9 in)
1974
89.4 mm (3.5 in)
1975
64.8 mm (2.6 in)
1976
60.7 mm (2.4 in)
1977
93.8 mm (3.7 in)
1978
139.3 mm (5.5 in)
1979
62.0 mm (2.4 in)
1980
44.0 mm (1.7 in)
1981
105.6 mm (4.2 in)
1982
80.3 mm (3.2 in)
1983
106.7 mm (4.2 in)
1984
117.6 mm (4.6 in)
1985
57.9 mm (2.3 in)
1986
61.0 mm (2.4 in)
1987
94.3 mm (3.7 in)
1988
99.4 mm (3.9 in)
1989
73.9 mm (2.9 in)
1990
84.1 mm (3.3 in)
1991
64.6 mm (2.5 in)
1992
67.5 mm (2.7 in)
1993
106.7 mm (4.2 in)
1994
165.3 mm (6.5 in)
1995
70.6 mm (2.8 in)
1996
62.8 mm (2.5 in)
1997
59.9 mm (2.4 in)
1998
85.3 mm (3.4 in)
1999
75.5 mm (3.0 in)
2000
130.4 mm (5.1 in)
2001
85.4 mm (3.4 in)
2002
35.1 mm (1.4 in)
2003
48.0 mm (1.9 in)
2004
48.3 mm (1.9 in)
2005
69.4 mm (2.7 in)
2006
81.6 mm (3.2 in)
2007
48.0 mm (1.9 in)
2008
94.7 mm (3.7 in)
2009
45.0 mm (1.8 in)
2010
71.9 mm (2.8 in)
2011
41.9 mm (1.6 in)
2012
40.7 mm (1.6 in)
Longest dry spell (CDD)
The longest dry spell of the year at Imuris (Smn), 1938 to 2012. The record is 160 days in 1956, marked on the chart; the median year is 74 days.
Longest dry spell (CDD) at Imuris (Smn) by year
Year
Longest dry spell (CDD)
1938
56 days
1943
6 days
1944
31 days
1945
28 days
1946
104 days
1947
57 days
1948
79 days
1949
57 days
1950
129 days
1951
76 days
1952
52 days
1953
126 days
1954
90 days
1955
84 days
1956
160 days
1957
44 days
1958
72 days
1959
73 days
1960
134 days
1961
119 days
1962
40 days
1963
72 days
1964
59 days
1965
75 days
1966
60 days
1967
58 days
1968
84 days
1969
60 days
1970
74 days
1971
56 days
1972
148 days
1973
90 days
1974
107 days
1975
86 days
1976
42 days
1977
73 days
1978
86 days
1979
58 days
1980
93 days
1981
53 days
1982
62 days
1983
51 days
1984
44 days
1985
53 days
1986
72 days
1987
66 days
1988
69 days
1989
84 days
1990
54 days
1991
77 days
1992
49 days
1993
96 days
1994
85 days
1995
121 days
1996
84 days
1997
60 days
1998
92 days
1999
82 days
2000
107 days
2001
74 days
2002
117 days
2003
72 days
2004
79 days
2005
76 days
2006
93 days
2007
53 days
2008
96 days
2009
72 days
2010
79 days
2011
125 days
2012
127 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
59 years with a frost
Across 59 years with a frost, the median last spring frost at Imuris (Smn) falls on 21 March and the median first autumn frost on 21 November, which leaves a median of 247 days between them.
Fitted over all years, the growing season changes by -6.7 days per decade at this station.
Frost dates and growing season at Imuris (Smn)
Measure
Median, all years
Earliest period
Recent period (1979 to 2011)
Recent against earliest
Fitted trend
Last spring frost
21 March
n/a
27 March
n/a
+4.4 days per decade
First autumn frost
21 November
n/a
20 November
n/a
-2.3 days per decade
Growing days
247 days
n/a
242 days
n/a
-6.7 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
65 years, 1946 to 2012
A day with at least 50.6 mm (2.0 in) of rain is expected about once in 2 years. A day with at least 108.1 mm (4.3 in) of rain is expected about once in 100 years.
Rainfall return levels at Imuris (Smn): the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
50.6 mm (2.0 in)
5 years
66.7 mm (2.6 in)
10 years
77.1 mm (3.0 in)
25 years
89.9 mm (3.5 in)
50 years
99.1 mm (3.9 in)
100 years
108.1 mm (4.3 in)
Longer than the 65 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, 65 years of values from 1946 to 2012.
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: 126.0 mm (5.0 in) in 1994; 95.0 mm (3.7 in) in 1984; 89.9 mm (3.5 in) in 1981.
Download the Data
Data for Imuris (Smn) standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Imuris (Smn) 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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.