Record envelope, standing records and threshold days for Roseau (USC00217087), Minnesota, United States, with 112 years of record.
Key Facts for Roseau
Roseau (USC00217087) is a weather station in Minnesota, United States at 48.85 latitude and -95.77 longitude, 319 m (1,047 ft) above sea level.
The station reports from 1895 to 2006, 112 years of record.
1,464 records set at Roseau still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Roseau tied a daily record high minimum temperature of -3.3 C (26.1 F) on 30 December 2006.
About the Station
Location: Minnesota, United States, 48.85 latitude, -95.77 longitude.
Elevation: 319 m (1,047 ft).
Period of record: 1895 to 2006, 112 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 Roseau. 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 Roseau, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
10.0 C (50.0 F)
-45.0 C (-49.0 F)
n/a
n/a
Feb
12.8 C (55.0 F)
-46.7 C (-52.1 F)
n/a
n/a
Mar
27.2 C (81.0 F)
-42.2 C (-44.0 F)
n/a
n/a
Apr
33.3 C (91.9 F)
-27.8 C (-18.0 F)
n/a
n/a
May
38.3 C (100.9 F)
-11.7 C (10.9 F)
n/a
n/a
Jun
38.9 C (102.0 F)
-7.8 C (18.0 F)
n/a
n/a
Jul
41.7 C (107.1 F)
-0.6 C (30.9 F)
n/a
n/a
Aug
38.3 C (100.9 F)
-5.0 C (23.0 F)
n/a
n/a
Sep
36.7 C (98.1 F)
-11.1 C (12.0 F)
n/a
n/a
Oct
31.1 C (88.0 F)
-26.7 C (-16.1 F)
n/a
n/a
Nov
22.2 C (72.0 F)
-37.8 C (-36.0 F)
n/a
n/a
Dec
11.1 C (52.0 F)
-42.8 C (-45.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Roseau still stand. 1919 holds the most, with 46.
Standing records at Roseau by the year they were set
Year set
Standing records
1895
10
1896
29
1897
26
1898
11
1899
15
1909
27
1910
26
1911
4
1912
12
1913
27
1914
27
1915
13
1916
32
1917
34
1918
19
1919
46
1920
9
1921
17
1922
14
1923
33
1924
14
1925
14
1926
17
1927
11
1928
26
1929
16
1930
15
1931
30
1932
16
1933
15
1934
20
1935
20
1936
39
1937
12
1938
6
1939
11
1940
13
1941
15
1942
15
1943
10
1944
10
1945
14
1946
13
1947
10
1948
11
1949
3
1950
13
1951
8
1952
19
1953
22
1954
8
1955
10
1956
14
1957
2
1958
16
1959
7
1960
2
1961
8
1962
11
1963
13
1964
15
1965
11
1966
16
1967
16
1968
12
1969
7
1970
8
1971
7
1972
12
1973
8
1974
7
1975
14
1976
16
1977
22
1978
10
1979
17
1980
5
1981
11
1982
11
1983
12
1984
12
1985
10
1986
2
1987
2
1988
5
1989
19
1990
12
1991
21
1992
14
1993
12
1994
7
1995
11
1996
19
1997
7
1998
4
1999
10
2000
17
2001
7
2002
9
2003
12
2004
12
2005
9
2006
14
All-Time Record Progression
5 new records
5 all-time records were set at Roseau between 11 July 1936 and 17 November 1996. Each dot is a new record.
When Roseau set new all-time records
Date
Kind
Detail
1936-07-11
Record high maximum temperature
Record high maximum temperature 41.1 C (106.0 F)
1936-07-12
Record high maximum temperature
Record high maximum temperature 41.7 C (107.1 F)
1936-09-13
Record daily precipitation
Record daily precipitation 93.0 mm (3.7 in)
1957-09-02
Record daily precipitation
Record daily precipitation 128.8 mm (5.1 in)
1996-11-17
Record daily snowfall
Record daily snowfall 38.1 cm (15.0 in)
Wettest Day of Each Month
Sep: 128.8 mm (5.1 in)
The wettest day on record for each calendar month at Roseau. The most was 128.8 mm (5.1 in) on 2 September 1957.
Record daily precipitation for each month at Roseau
Month
Record daily precipitation (mm)
Date
Jan
30.5 mm (1.2 in)
29 January 1916
Feb
30.5 mm (1.2 in)
17 February 1983
Mar
32.5 mm (1.3 in)
26 March 1945
Apr
66.0 mm (2.6 in)
4 April 1997
May
108.2 mm (4.3 in)
11 May 2004
Jun
102.6 mm (4.0 in)
10 June 2002
Jul
88.9 mm (3.5 in)
2 July 1919
Aug
120.7 mm (4.8 in)
4 August 1985
Sep
128.8 mm (5.1 in)
2 September 1957
Oct
54.6 mm (2.1 in)
15 October 1934
Nov
50.8 mm (2.0 in)
14 November 1909
Dec
25.4 mm (1.0 in)
4 December 1997
Period of Record Coverage
1895 to 2006
Complete yearUnder 90 percent of days
103 years of record at Roseau, 1895 to 2006. 20 years have data for under 90 percent of days and are left out of rankings: 1895, 1896, 1897, 1898, 1899, 1911, 1912, 1974 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 74 complete years at Roseau, 1909 to 1995. Blue stripes are years cooler than the station's own mean of 2.7 C (36.9 F); red stripes are warmer. The coolest year was 1917, at 0.2 C (32.4 F), and the warmest was 1931, at 5.9 C (42.7 F). The strongest colour marks a difference of 3.2 C (5.8 F).
Annual mean temperature at Roseau as warming stripes, 1909 to 1995
Year
Annual mean temperature
Difference from the station mean
1909
2.1 C
-0.63 C
1910
3.7 C
+0.95 C
1913
2.0 C
-0.71 C
1914
2.6 C
-0.18 C
1915
3.0 C
+0.22 C
1916
0.3 C
-2.44 C
1917
0.2 C
-2.53 C
1918
3.1 C
+0.31 C
1919
2.6 C
-0.17 C
1920
3.0 C
+0.26 C
1921
3.8 C
+1.10 C
1922
4.0 C
+1.24 C
1923
3.4 C
+0.63 C
1924
2.1 C
-0.61 C
1925
3.0 C
+0.22 C
1926
3.0 C
+0.22 C
1927
2.8 C
+0.09 C
1928
4.2 C
+1.49 C
1929
1.9 C
-0.89 C
1930
4.1 C
+1.37 C
1931
5.9 C
+3.19 C
1932
2.9 C
+0.11 C
1933
2.8 C
+0.06 C
1934
3.4 C
+0.68 C
1935
2.6 C
-0.16 C
1937
2.2 C
-0.58 C
1938
4.0 C
+1.26 C
1939
3.8 C
+1.09 C
1940
2.6 C
-0.18 C
1941
3.7 C
+1.00 C
1942
3.0 C
+0.21 C
1943
1.9 C
-0.83 C
1944
3.3 C
+0.55 C
1945
2.8 C
+0.03 C
1946
3.2 C
+0.41 C
1947
2.3 C
-0.45 C
1948
3.3 C
+0.53 C
1949
3.2 C
+0.48 C
1950
0.6 C
-2.14 C
1951
2.1 C
-0.60 C
1952
4.4 C
+1.66 C
1953
4.6 C
+1.85 C
1954
3.5 C
+0.78 C
1955
2.6 C
-0.12 C
1956
2.3 C
-0.41 C
1959
2.8 C
+0.10 C
1960
3.0 C
+0.22 C
1961
4.0 C
+1.25 C
1962
3.3 C
+0.60 C
1963
3.8 C
+1.05 C
1964
2.2 C
-0.53 C
1965
1.5 C
-1.21 C
1966
1.7 C
-1.06 C
1967
2.1 C
-0.66 C
1968
2.9 C
+0.20 C
1969
2.8 C
+0.05 C
1970
1.7 C
-1.08 C
1971
2.3 C
-0.41 C
1972
1.7 C
-1.09 C
1976
2.4 C
-0.37 C
1977
3.2 C
+0.50 C
1978
1.8 C
-0.93 C
1979
0.4 C
-2.35 C
1980
2.2 C
-0.50 C
1981
3.5 C
+0.72 C
1982
1.2 C
-1.54 C
1983
3.2 C
+0.47 C
1984
3.0 C
+0.28 C
1985
1.5 C
-1.26 C
1990
3.4 C
+0.68 C
1992
2.5 C
-0.20 C
1993
1.9 C
-0.88 C
1994
3.1 C
+0.37 C
1995
2.1 C
-0.66 C
The fitted trend in annual mean temperature here over 1909 to 1995 is -0.07 C (-0.16 to 0.03) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.12 F (-0.30 to 0.05) per decade. The slope is a straight line fitted to 74 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Roseau
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.07 C (-0.16 to 0.03) per decade
-0.12 F (-0.30 to 0.05) per decade
1909 to 1995
74
Not clearly different from zero
Mean daily maximum
-0.1 C (-0.2 to 0.0) per decade
-0.3 F (-0.4 to -0.1) per decade
1909 to 1995
74
Fall
Mean daily minimum
0.01 C (-0.09 to 0.12) per decade
0.02 F (-0.17 to 0.21) per decade
1909 to 1995
74
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
1895 to 2006
Yearly extremes at Roseau: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
41.7 C (107.1 F)
1936
33.9 C (93.0 F)
103
Coldest night (TNn)
-46.7 C (-52.1 F)
1914
-39.4 C (-38.9 F)
103
Wettest day (Rx1day)
128.8 mm (5.1 in)
1957
42.4 mm (1.7 in)
103
Wettest five days (Rx5day)
207.3 mm (8.2 in)
1919
65.5 mm (2.6 in)
103
Longest dry spell (CDD)
64 days
1939
28 days
103
Hottest day (TXx)
The hottest day of the year at Roseau, 1895 to 2006. The record is 41.7 C (107.1 F) in 1936, marked on the chart; the median year is 33.9 C (93.0 F).
Hottest day (TXx) at Roseau by year
Year
Hottest day (TXx)
1895
31.1 C (88.0 F)
1896
31.7 C (89.1 F)
1897
35.6 C (96.1 F)
1898
30.0 C (86.0 F)
1899
36.7 C (98.1 F)
1909
35.0 C (95.0 F)
1910
36.7 C (98.1 F)
1911
34.4 C (93.9 F)
1912
37.8 C (100.0 F)
1913
34.4 C (93.9 F)
1914
33.9 C (93.0 F)
1915
31.1 C (88.0 F)
1916
35.0 C (95.0 F)
1917
39.4 C (102.9 F)
1918
33.3 C (91.9 F)
1919
33.9 C (93.0 F)
1920
33.3 C (91.9 F)
1921
35.0 C (95.0 F)
1922
33.3 C (91.9 F)
1923
35.0 C (95.0 F)
1924
33.3 C (91.9 F)
1925
33.9 C (93.0 F)
1926
33.3 C (91.9 F)
1927
31.7 C (89.1 F)
1928
34.4 C (93.9 F)
1929
36.7 C (98.1 F)
1930
33.9 C (93.0 F)
1931
38.9 C (102.0 F)
1932
35.6 C (96.1 F)
1933
36.1 C (97.0 F)
1934
38.3 C (100.9 F)
1935
35.6 C (96.1 F)
1936
41.7 C (107.1 F)
1937
34.4 C (93.9 F)
1938
32.2 C (90.0 F)
1939
37.8 C (100.0 F)
1940
36.7 C (98.1 F)
1941
35.0 C (95.0 F)
1942
30.6 C (87.1 F)
1943
32.2 C (90.0 F)
1944
32.8 C (91.0 F)
1945
33.9 C (93.0 F)
1946
35.0 C (95.0 F)
1947
36.1 C (97.0 F)
1948
33.9 C (93.0 F)
1949
35.0 C (95.0 F)
1950
32.8 C (91.0 F)
1951
34.4 C (93.9 F)
1952
34.4 C (93.9 F)
1953
36.1 C (97.0 F)
1954
33.3 C (91.9 F)
1955
34.4 C (93.9 F)
1956
33.9 C (93.0 F)
1957
32.8 C (91.0 F)
1958
33.9 C (93.0 F)
1959
33.9 C (93.0 F)
1960
32.8 C (91.0 F)
1961
35.0 C (95.0 F)
1962
31.1 C (88.0 F)
1963
33.3 C (91.9 F)
1964
33.9 C (93.0 F)
1965
34.4 C (93.9 F)
1966
31.7 C (89.1 F)
1967
32.8 C (91.0 F)
1968
31.7 C (89.1 F)
1969
34.4 C (93.9 F)
1970
36.7 C (98.1 F)
1971
32.8 C (91.0 F)
1972
34.4 C (93.9 F)
1973
32.8 C (91.0 F)
1974
30.0 C (86.0 F)
1975
33.3 C (91.9 F)
1976
35.0 C (95.0 F)
1977
34.4 C (93.9 F)
1978
33.9 C (93.0 F)
1979
31.1 C (88.0 F)
1980
34.4 C (93.9 F)
1981
30.6 C (87.1 F)
1982
31.7 C (89.1 F)
1983
34.4 C (93.9 F)
1984
35.0 C (95.0 F)
1985
30.0 C (86.0 F)
1986
32.2 C (90.0 F)
1987
24.4 C (75.9 F)
1988
35.6 C (96.1 F)
1989
36.1 C (97.0 F)
1990
32.8 C (91.0 F)
1991
31.7 C (89.1 F)
1992
30.6 C (87.1 F)
1993
31.7 C (89.1 F)
1994
30.0 C (86.0 F)
1995
35.0 C (95.0 F)
1996
33.9 C (93.0 F)
1997
31.7 C (89.1 F)
1998
32.8 C (91.0 F)
1999
33.3 C (91.9 F)
2000
33.9 C (93.0 F)
2001
34.4 C (93.9 F)
2002
33.9 C (93.0 F)
2003
38.3 C (100.9 F)
2004
31.7 C (89.1 F)
2005
34.4 C (93.9 F)
2006
36.1 C (97.0 F)
Coldest night (TNn)
The coldest night of the year at Roseau, 1895 to 2006. The record is -46.7 C (-52.1 F) in 1914, marked on the chart; the median year is -39.4 C (-38.9 F).
Coldest night (TNn) at Roseau by year
Year
Coldest night (TNn)
1895
-32.2 C (-26.0 F)
1896
-41.7 C (-43.1 F)
1897
-41.1 C (-42.0 F)
1898
-37.8 C (-36.0 F)
1899
-43.9 C (-47.0 F)
1909
-44.4 C (-47.9 F)
1910
-42.8 C (-45.0 F)
1911
-39.4 C (-38.9 F)
1912
-28.3 C (-18.9 F)
1913
-40.0 C (-40.0 F)
1914
-46.7 C (-52.1 F)
1915
-44.4 C (-47.9 F)
1916
-42.8 C (-45.0 F)
1917
-42.8 C (-45.0 F)
1918
-40.6 C (-41.1 F)
1919
-41.1 C (-42.0 F)
1920
-41.7 C (-43.1 F)
1921
-39.4 C (-38.9 F)
1922
-41.1 C (-42.0 F)
1923
-41.7 C (-43.1 F)
1924
-38.9 C (-38.0 F)
1925
-40.0 C (-40.0 F)
1926
-36.1 C (-33.0 F)
1927
-42.2 C (-44.0 F)
1928
-35.6 C (-32.1 F)
1929
-39.4 C (-38.9 F)
1930
-43.3 C (-45.9 F)
1931
-32.2 C (-26.0 F)
1932
-35.6 C (-32.1 F)
1933
-42.8 C (-45.0 F)
1934
-41.1 C (-42.0 F)
1935
-43.9 C (-47.0 F)
1936
-45.0 C (-49.0 F)
1937
-41.1 C (-42.0 F)
1938
-39.4 C (-38.9 F)
1939
-43.3 C (-45.9 F)
1940
-36.7 C (-34.1 F)
1941
-37.2 C (-35.0 F)
1942
-36.1 C (-33.0 F)
1943
-40.0 C (-40.0 F)
1944
-33.3 C (-27.9 F)
1945
-35.6 C (-32.1 F)
1946
-37.2 C (-35.0 F)
1947
-36.7 C (-34.1 F)
1948
-40.0 C (-40.0 F)
1949
-41.7 C (-43.1 F)
1950
-41.1 C (-42.0 F)
1951
-40.0 C (-40.0 F)
1952
-35.0 C (-31.0 F)
1953
-35.0 C (-31.0 F)
1954
-42.8 C (-45.0 F)
1955
-42.2 C (-44.0 F)
1956
-37.2 C (-35.0 F)
1957
-38.3 C (-36.9 F)
1958
-35.0 C (-31.0 F)
1959
-40.0 C (-40.0 F)
1960
-36.7 C (-34.1 F)
1961
-38.9 C (-38.0 F)
1962
-38.9 C (-38.0 F)
1963
-39.4 C (-38.9 F)
1964
-36.1 C (-33.0 F)
1965
-39.4 C (-38.9 F)
1966
-44.4 C (-47.9 F)
1967
-42.2 C (-44.0 F)
1968
-43.9 C (-47.0 F)
1969
-38.9 C (-38.0 F)
1970
-41.7 C (-43.1 F)
1971
-38.9 C (-38.0 F)
1972
-41.1 C (-42.0 F)
1973
-40.0 C (-40.0 F)
1974
-41.1 C (-42.0 F)
1975
-35.0 C (-31.0 F)
1976
-37.8 C (-36.0 F)
1977
-39.4 C (-38.9 F)
1978
-36.1 C (-33.0 F)
1979
-40.0 C (-40.0 F)
1980
-36.7 C (-34.1 F)
1981
-39.4 C (-38.9 F)
1982
-40.0 C (-40.0 F)
1983
-39.4 C (-38.9 F)
1984
-38.3 C (-36.9 F)
1985
-37.8 C (-36.0 F)
1986
-37.2 C (-35.0 F)
1987
-26.1 C (-15.0 F)
1988
-0.6 C (30.9 F)
1989
-42.8 C (-45.0 F)
1990
-38.9 C (-38.0 F)
1991
-38.9 C (-38.0 F)
1992
-37.2 C (-35.0 F)
1993
-42.2 C (-44.0 F)
1994
-43.3 C (-45.9 F)
1995
-35.0 C (-31.0 F)
1996
-46.7 C (-52.1 F)
1997
-25.0 C (-13.0 F)
1998
-30.0 C (-22.0 F)
1999
-33.3 C (-27.9 F)
2000
-32.8 C (-27.0 F)
2001
-31.1 C (-24.0 F)
2002
-27.8 C (-18.0 F)
2003
-32.8 C (-27.0 F)
2004
-40.6 C (-41.1 F)
2005
-37.2 C (-35.0 F)
2006
-34.4 C (-29.9 F)
Wettest day (Rx1day)
The wettest day of the year at Roseau, 1895 to 2006. The record is 128.8 mm (5.1 in) in 1957, marked on the chart; the median year is 42.4 mm (1.7 in).
Wettest day (Rx1day) at Roseau by year
Year
Wettest day (Rx1day)
1895
62.0 mm (2.4 in)
1896
47.2 mm (1.9 in)
1897
40.6 mm (1.6 in)
1898
23.4 mm (0.9 in)
1899
49.5 mm (1.9 in)
1909
52.3 mm (2.1 in)
1910
25.4 mm (1.0 in)
1911
76.2 mm (3.0 in)
1912
54.6 mm (2.1 in)
1913
35.8 mm (1.4 in)
1914
33.0 mm (1.3 in)
1915
22.1 mm (0.9 in)
1916
30.5 mm (1.2 in)
1917
20.3 mm (0.8 in)
1918
41.9 mm (1.6 in)
1919
88.9 mm (3.5 in)
1920
34.8 mm (1.4 in)
1921
26.9 mm (1.1 in)
1922
50.5 mm (2.0 in)
1923
43.9 mm (1.7 in)
1924
56.6 mm (2.2 in)
1925
50.8 mm (2.0 in)
1926
47.2 mm (1.9 in)
1927
24.6 mm (1.0 in)
1928
50.8 mm (2.0 in)
1929
27.9 mm (1.1 in)
1930
46.7 mm (1.8 in)
1931
36.3 mm (1.4 in)
1932
45.7 mm (1.8 in)
1933
22.4 mm (0.9 in)
1934
54.6 mm (2.1 in)
1935
40.6 mm (1.6 in)
1936
93.0 mm (3.7 in)
1937
73.7 mm (2.9 in)
1938
38.1 mm (1.5 in)
1939
25.7 mm (1.0 in)
1940
44.5 mm (1.8 in)
1941
45.7 mm (1.8 in)
1942
39.1 mm (1.5 in)
1943
36.3 mm (1.4 in)
1944
49.3 mm (1.9 in)
1945
43.2 mm (1.7 in)
1946
41.4 mm (1.6 in)
1947
54.4 mm (2.1 in)
1948
39.6 mm (1.6 in)
1949
53.3 mm (2.1 in)
1950
35.6 mm (1.4 in)
1951
37.3 mm (1.5 in)
1952
34.8 mm (1.4 in)
1953
31.2 mm (1.2 in)
1954
21.8 mm (0.9 in)
1955
36.6 mm (1.4 in)
1956
66.0 mm (2.6 in)
1957
128.8 mm (5.1 in)
1958
40.6 mm (1.6 in)
1959
32.3 mm (1.3 in)
1960
27.4 mm (1.1 in)
1961
21.6 mm (0.9 in)
1962
42.9 mm (1.7 in)
1963
48.0 mm (1.9 in)
1964
48.8 mm (1.9 in)
1965
42.2 mm (1.7 in)
1966
44.5 mm (1.8 in)
1967
43.2 mm (1.7 in)
1968
84.6 mm (3.3 in)
1969
41.9 mm (1.6 in)
1970
78.0 mm (3.1 in)
1971
23.6 mm (0.9 in)
1972
71.1 mm (2.8 in)
1973
34.0 mm (1.3 in)
1974
73.7 mm (2.9 in)
1975
31.8 mm (1.3 in)
1976
40.4 mm (1.6 in)
1977
35.6 mm (1.4 in)
1978
34.5 mm (1.4 in)
1979
39.1 mm (1.5 in)
1980
49.5 mm (1.9 in)
1981
43.2 mm (1.7 in)
1982
50.8 mm (2.0 in)
1983
50.8 mm (2.0 in)
1984
37.6 mm (1.5 in)
1985
120.7 mm (4.8 in)
1986
26.2 mm (1.0 in)
1987
25.4 mm (1.0 in)
1988
27.9 mm (1.1 in)
1989
42.4 mm (1.7 in)
1990
26.4 mm (1.0 in)
1991
45.7 mm (1.8 in)
1992
38.1 mm (1.5 in)
1993
49.8 mm (2.0 in)
1994
40.1 mm (1.6 in)
1995
49.3 mm (1.9 in)
1996
71.6 mm (2.8 in)
1997
66.0 mm (2.6 in)
1998
76.2 mm (3.0 in)
1999
67.1 mm (2.6 in)
2000
53.8 mm (2.1 in)
2001
69.3 mm (2.7 in)
2002
102.6 mm (4.0 in)
2003
41.1 mm (1.6 in)
2004
108.2 mm (4.3 in)
2005
41.9 mm (1.6 in)
2006
29.5 mm (1.2 in)
Wettest five days (Rx5day)
The wettest five days of the year at Roseau, 1895 to 2006. The record is 207.3 mm (8.2 in) in 1919, marked on the chart; the median year is 65.5 mm (2.6 in).
Wettest five days (Rx5day) at Roseau by year
Year
Wettest five days (Rx5day)
1895
79.7 mm (3.1 in)
1896
119.9 mm (4.7 in)
1897
110.0 mm (4.3 in)
1898
30.0 mm (1.2 in)
1899
71.9 mm (2.8 in)
1909
53.8 mm (2.1 in)
1910
51.6 mm (2.0 in)
1911
80.5 mm (3.2 in)
1912
70.6 mm (2.8 in)
1913
38.1 mm (1.5 in)
1914
59.2 mm (2.3 in)
1915
48.0 mm (1.9 in)
1916
37.8 mm (1.5 in)
1917
24.7 mm (1.0 in)
1918
34.3 mm (1.4 in)
1919
207.3 mm (8.2 in)
1920
44.9 mm (1.8 in)
1921
51.0 mm (2.0 in)
1922
65.5 mm (2.6 in)
1923
47.2 mm (1.9 in)
1924
63.2 mm (2.5 in)
1925
67.9 mm (2.7 in)
1926
84.3 mm (3.3 in)
1927
43.5 mm (1.7 in)
1928
86.9 mm (3.4 in)
1929
34.7 mm (1.4 in)
1930
67.8 mm (2.7 in)
1931
56.1 mm (2.2 in)
1932
76.3 mm (3.0 in)
1933
36.1 mm (1.4 in)
1934
55.6 mm (2.2 in)
1935
65.5 mm (2.6 in)
1936
100.4 mm (4.0 in)
1937
94.5 mm (3.7 in)
1938
59.7 mm (2.4 in)
1939
55.8 mm (2.2 in)
1940
70.6 mm (2.8 in)
1941
111.3 mm (4.4 in)
1942
76.0 mm (3.0 in)
1943
72.4 mm (2.9 in)
1944
66.0 mm (2.6 in)
1945
52.8 mm (2.1 in)
1946
61.7 mm (2.4 in)
1947
81.9 mm (3.2 in)
1948
53.3 mm (2.1 in)
1949
67.7 mm (2.7 in)
1950
84.1 mm (3.3 in)
1951
43.4 mm (1.7 in)
1952
73.2 mm (2.9 in)
1953
58.2 mm (2.3 in)
1954
38.3 mm (1.5 in)
1955
74.9 mm (2.9 in)
1956
121.9 mm (4.8 in)
1957
147.1 mm (5.8 in)
1958
52.0 mm (2.0 in)
1959
66.0 mm (2.6 in)
1960
31.8 mm (1.3 in)
1961
48.2 mm (1.9 in)
1962
68.3 mm (2.7 in)
1963
87.1 mm (3.4 in)
1964
91.5 mm (3.6 in)
1965
58.2 mm (2.3 in)
1966
61.6 mm (2.4 in)
1967
59.8 mm (2.4 in)
1968
124.1 mm (4.9 in)
1969
71.9 mm (2.8 in)
1970
85.1 mm (3.4 in)
1971
57.9 mm (2.3 in)
1972
114.3 mm (4.5 in)
1973
57.9 mm (2.3 in)
1974
121.5 mm (4.8 in)
1975
63.2 mm (2.5 in)
1976
76.7 mm (3.0 in)
1977
53.1 mm (2.1 in)
1978
69.3 mm (2.7 in)
1979
52.1 mm (2.1 in)
1980
65.5 mm (2.6 in)
1981
63.5 mm (2.5 in)
1982
52.6 mm (2.1 in)
1983
58.2 mm (2.3 in)
1984
88.3 mm (3.5 in)
1985
120.7 mm (4.8 in)
1986
54.7 mm (2.2 in)
1987
38.1 mm (1.5 in)
1988
44.4 mm (1.7 in)
1989
51.5 mm (2.0 in)
1990
30.0 mm (1.2 in)
1991
84.5 mm (3.3 in)
1992
75.2 mm (3.0 in)
1993
79.1 mm (3.1 in)
1994
73.3 mm (2.9 in)
1995
53.4 mm (2.1 in)
1996
71.6 mm (2.8 in)
1997
60.4 mm (2.4 in)
1998
101.4 mm (4.0 in)
1999
95.8 mm (3.8 in)
2000
81.2 mm (3.2 in)
2001
138.6 mm (5.5 in)
2002
174.0 mm (6.9 in)
2003
46.3 mm (1.8 in)
2004
108.4 mm (4.3 in)
2005
79.5 mm (3.1 in)
2006
33.6 mm (1.3 in)
Longest dry spell (CDD)
The longest dry spell of the year at Roseau, 1895 to 2006. The record is 64 days in 1939, marked on the chart; the median year is 28 days.
Longest dry spell (CDD) at Roseau by year
Year
Longest dry spell (CDD)
1895
20 days
1896
14 days
1897
18 days
1898
29 days
1899
25 days
1909
27 days
1910
31 days
1911
49 days
1912
28 days
1913
39 days
1914
29 days
1915
36 days
1916
35 days
1917
43 days
1918
24 days
1919
23 days
1920
34 days
1921
19 days
1922
29 days
1923
32 days
1924
23 days
1925
28 days
1926
20 days
1927
29 days
1928
48 days
1929
23 days
1930
28 days
1931
25 days
1932
28 days
1933
29 days
1934
31 days
1935
32 days
1936
38 days
1937
31 days
1938
34 days
1939
64 days
1940
23 days
1941
30 days
1942
23 days
1943
28 days
1944
31 days
1945
25 days
1946
21 days
1947
24 days
1948
29 days
1949
24 days
1950
17 days
1951
32 days
1952
32 days
1953
28 days
1954
35 days
1955
35 days
1956
28 days
1957
37 days
1958
27 days
1959
28 days
1960
37 days
1961
26 days
1962
21 days
1963
31 days
1964
35 days
1965
26 days
1966
21 days
1967
26 days
1968
44 days
1969
52 days
1970
26 days
1971
21 days
1972
28 days
1973
25 days
1974
41 days
1975
24 days
1976
48 days
1977
23 days
1978
25 days
1979
25 days
1980
58 days
1981
24 days
1982
23 days
1983
23 days
1984
47 days
1985
45 days
1986
23 days
1987
31 days
1988
19 days
1989
23 days
1990
27 days
1991
17 days
1992
21 days
1993
46 days
1994
37 days
1995
29 days
1996
19 days
1997
26 days
1998
22 days
1999
37 days
2000
19 days
2001
16 days
2002
15 days
2003
15 days
2004
21 days
2005
10 days
2006
21 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
74 years with a frost
Across 74 years with a frost, the median last spring frost at Roseau falls on 28 May and the median first autumn frost on 13 September, which leaves a median of 105 days between them.
In 1956 to 1995 the median growing season was 106 days. That is 10 days more than in 1909 to 1941.
Fitted over all years, the growing season changes by +1.7 days per decade at this station.
Frost dates and growing season at Roseau
Measure
Median, all years
Earliest period (1909 to 1941)
Recent period (1956 to 1995)
Recent against earliest
Fitted trend
Last spring frost
28 May
3 June
28 May
6 days earlier
-0.8 days per decade
First autumn frost
13 September
8 September
15 September
7 days later
+0.9 days per decade
Growing days
105 days
96 days
106 days
10 days more
+1.7 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
75 years, 1896 to 1995
A day with at least 40.8 mm (1.6 in) of rain is expected about once in 2 years. A day with at least 107.5 mm (4.2 in) of rain is expected about once in 100 years.
Rainfall return levels at Roseau: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
40.8 mm (1.6 in)
5 years
55.7 mm (2.2 in)
10 years
66.7 mm (2.6 in)
25 years
81.9 mm (3.2 in)
50 years
94.2 mm (3.7 in)
100 years
107.5 mm (4.2 in)
Longer than the 75 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, 75 years of values from 1896 to 1995.
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: 128.8 mm (5.1 in) in 1957; 93.0 mm (3.7 in) in 1936; 88.9 mm (3.5 in) in 1919.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Roseau standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Roseau 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 2026-10-12 (12 October 2026). Records are computed by this site and are not official.