Record envelope, standing records and threshold days for Belle Isle (CA008500500), Newfoundland and Labrador, Canada, with 99 years of record.
Key Facts for Belle Isle
Belle Isle (CA008500500) is a weather station in Newfoundland and Labrador, Canada at 51.88 latitude and -55.38 longitude, 130 m (427 ft) above sea level.
The station reports from 1871 to 1969, 99 years of record.
1,464 records set at Belle Isle still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
Belle Isle set a daily record high minimum temperature of -2.2 C (28.0 F) on 31 December 1969.
About the Station
Location: Newfoundland and Labrador, Canada, 51.88 latitude, -55.38 longitude.
Elevation: 130 m (427 ft).
Period of record: 1871 to 1969, 99 years.
Eligible elements: tmax, tmin, prcp, snow.
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 Belle Isle. 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 Belle Isle, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
4.4 C (39.9 F)
-35.0 C (-31.0 F)
n/a
n/a
Feb
4.4 C (39.9 F)
-34.4 C (-29.9 F)
n/a
n/a
Mar
7.2 C (45.0 F)
-28.9 C (-20.0 F)
n/a
n/a
Apr
13.3 C (55.9 F)
-23.3 C (-9.9 F)
n/a
n/a
May
15.0 C (59.0 F)
-15.6 C (3.9 F)
n/a
n/a
Jun
20.6 C (69.1 F)
-7.2 C (19.0 F)
n/a
n/a
Jul
22.8 C (73.0 F)
-3.9 C (25.0 F)
n/a
n/a
Aug
22.2 C (72.0 F)
-1.7 C (28.9 F)
n/a
n/a
Sep
20.6 C (69.1 F)
-3.3 C (26.1 F)
n/a
n/a
Oct
14.4 C (57.9 F)
-11.1 C (12.0 F)
n/a
n/a
Nov
12.2 C (54.0 F)
-21.1 C (-6.0 F)
n/a
n/a
Dec
7.2 C (45.0 F)
-34.4 C (-29.9 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Belle Isle still stand. 1889 holds the most, with 87.
Standing records at Belle Isle by the year they were set
Year set
Standing records
1884
36
1885
36
1886
46
1887
42
1888
20
1889
87
1890
49
1891
44
1892
14
1893
21
1894
14
1895
32
1896
23
1897
23
1898
26
1899
49
1900
17
1901
46
1902
18
1903
13
1904
31
1905
24
1906
11
1907
10
1908
6
1909
6
1911
6
1912
52
1913
41
1914
19
1917
13
1918
72
1919
47
1920
3
1921
11
1922
9
1923
21
1924
5
1925
6
1926
4
1927
10
1928
5
1929
18
1930
8
1931
5
1932
15
1933
9
1934
8
1935
6
1936
8
1937
17
1938
5
1939
9
1940
5
1941
5
1942
11
1943
3
1944
6
1945
5
1946
6
1947
10
1948
6
1949
10
1950
12
1951
14
1952
12
1953
5
1954
11
1955
14
1956
8
1957
18
1958
10
1959
4
1960
10
1961
7
1962
4
1963
10
1964
9
1965
6
1966
18
1967
14
1968
10
1969
25
All-Time Record Progression
5 new records
5 all-time records were set at Belle Isle between 22 February 1918 and 10 July 1952. Each dot is a new record.
When Belle Isle set new all-time records
Date
Kind
Detail
1918-02-22
Record low minimum temperature
Record low minimum temperature -34.4 C (-29.9 F)
1919-01-12
Record low minimum temperature
Record low minimum temperature -35.0 C (-31.0 F)
1921-12-25
Record low maximum temperature
Record low maximum temperature -27.8 C (-18.0 F)
1944-07-04
Record high maximum temperature
Record high maximum temperature 22.2 C (72.0 F)
1952-07-10
Record high maximum temperature
Record high maximum temperature 22.8 C (73.0 F)
Wettest Day of Each Month
Jul: 152.4 mm (6.0 in)
The wettest day on record for each calendar month at Belle Isle. The most was 152.4 mm (6.0 in) on 24 July 1919.
Record daily precipitation for each month at Belle Isle
Month
Record daily precipitation (mm)
Date
Jan
65.5 mm (2.6 in)
2 January 1965
Feb
35.6 mm (1.4 in)
20 February 1901
Mar
112.5 mm (4.4 in)
21 March 1902
Apr
40.6 mm (1.6 in)
30 April 1903
May
83.1 mm (3.3 in)
28 May 1949
Jun
67.6 mm (2.7 in)
3 June 1873
Jul
152.4 mm (6.0 in)
24 July 1919
Aug
112.5 mm (4.4 in)
19 August 1871
Sep
119.4 mm (4.7 in)
15 September 1872
Oct
77.7 mm (3.1 in)
24 October 1909
Nov
61.0 mm (2.4 in)
22 November 1900
Dec
45.7 mm (1.8 in)
11 December 1945
Period of Record Coverage
1884 to 1969
Complete yearUnder 90 percent of days
84 years of record at Belle Isle, 1884 to 1969. 9 years have data for under 90 percent of days and are left out of rankings: 1884, 1892, 1906, 1909, 1911, 1914, 1916, 1920 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 68 complete years at Belle Isle, 1885 to 1969. Blue stripes are years cooler than the station's own mean of -0.5 C (31.2 F); red stripes are warmer. The coolest year was 1918, at -3.0 C (26.6 F), and the warmest was 1952, at 1.2 C (34.2 F). The strongest colour marks a difference of 2.6 C (4.7 F).
Annual mean temperature at Belle Isle as warming stripes, 1885 to 1969
Year
Annual mean temperature
Difference from the station mean
1885
-0.4 C
+0.10 C
1886
-0.3 C
+0.18 C
1887
-1.7 C
-1.25 C
1888
-0.8 C
-0.36 C
1890
-1.2 C
-0.72 C
1891
-0.2 C
+0.26 C
1893
-0.6 C
-0.13 C
1894
-1.6 C
-1.13 C
1895
1.1 C
+1.60 C
1896
-1.0 C
-0.58 C
1897
-0.7 C
-0.20 C
1898
0.6 C
+1.06 C
1899
-0.3 C
+0.11 C
1900
-0.2 C
+0.25 C
1901
1.0 C
+1.47 C
1902
0.8 C
+1.28 C
1903
-1.1 C
-0.65 C
1904
-1.2 C
-0.72 C
1905
-0.4 C
+0.06 C
1907
-1.6 C
-1.11 C
1908
0.1 C
+0.55 C
1912
-2.4 C
-1.97 C
1913
-2.7 C
-2.27 C
1917
-0.7 C
-0.23 C
1918
-3.0 C
-2.55 C
1919
-2.3 C
-1.81 C
1921
-1.9 C
-1.46 C
1922
-2.2 C
-1.76 C
1923
-1.5 C
-1.03 C
1924
-0.4 C
+0.02 C
1925
-0.5 C
-0.01 C
1927
-0.6 C
-0.11 C
1928
-0.5 C
-0.05 C
1929
-1.3 C
-0.89 C
1930
0.1 C
+0.51 C
1931
0.7 C
+1.15 C
1932
0.2 C
+0.66 C
1934
-1.0 C
-0.51 C
1936
0.0 C
+0.49 C
1937
0.3 C
+0.71 C
1938
-0.5 C
-0.02 C
1939
-0.9 C
-0.43 C
1940
0.2 C
+0.62 C
1941
-0.5 C
-0.09 C
1942
-0.1 C
+0.31 C
1943
-0.7 C
-0.26 C
1944
-0.2 C
+0.30 C
1945
-0.3 C
+0.18 C
1946
-0.6 C
-0.14 C
1947
0.3 C
+0.74 C
1948
-0.5 C
-0.05 C
1949
-0.6 C
-0.16 C
1950
-0.7 C
-0.20 C
1952
1.2 C
+1.70 C
1956
0.0 C
+0.50 C
1957
-0.8 C
-0.33 C
1958
0.7 C
+1.18 C
1959
-0.6 C
-0.15 C
1960
1.0 C
+1.49 C
1961
0.4 C
+0.87 C
1962
-0.3 C
+0.15 C
1963
-0.2 C
+0.26 C
1964
-0.6 C
-0.11 C
1965
0.3 C
+0.71 C
1966
1.0 C
+1.47 C
1967
0.1 C
+0.59 C
1968
0.1 C
+0.55 C
1969
1.1 C
+1.58 C
The annual mean temperature here has risen by 0.12 C (0.04 to 0.21) per decade over 1885 to 1969. In Fahrenheit: 0.2 F (0.1 to 0.4) per decade. The slope is a straight line fitted to 68 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Belle Isle
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.12 C (0.04 to 0.21) per decade
0.2 F (0.1 to 0.4) per decade
1885 to 1969
68
Rise
Mean daily maximum
0.1 C (0.1 to 0.2) per decade
0.2 F (0.1 to 0.4) per decade
1885 to 1969
68
Rise
Mean daily minimum
0.11 C (0.00 to 0.21) per decade
0.19 F (-0.01 to 0.39) per decade
1885 to 1969
68
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
1871 to 1969
Yearly extremes at Belle Isle: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
22.8 C (73.0 F)
1952
18.6 C (65.5 F)
84
Coldest night (TNn)
-35.0 C (-31.0 F)
1919
-27.8 C (-18.0 F)
84
Wettest day (Rx1day)
152.4 mm (6.0 in)
1919
50.0 mm (2.0 in)
87
Wettest five days (Rx5day)
261.6 mm (10.3 in)
1871
72.7 mm (2.9 in)
87
Longest dry spell (CDD)
78 days
1957
18 days
87
Hottest day (TXx)
The hottest day of the year at Belle Isle, 1871 to 1969. The record is 22.8 C (73.0 F) in 1952, marked on the chart; the median year is 18.6 C (65.5 F).
Hottest day (TXx) at Belle Isle by year
Year
Hottest day (TXx)
1871
n/a
1872
n/a
1873
n/a
1877
n/a
1878
n/a
1879
n/a
1880
n/a
1884
15.6 C (60.1 F)
1885
20.6 C (69.1 F)
1886
16.7 C (62.1 F)
1887
17.8 C (64.0 F)
1888
18.3 C (64.9 F)
1889
21.7 C (71.1 F)
1890
21.1 C (70.0 F)
1891
20.6 C (69.1 F)
1892
20.6 C (69.1 F)
1893
18.3 C (64.9 F)
1894
17.2 C (63.0 F)
1895
20.6 C (69.1 F)
1896
19.4 C (66.9 F)
1897
19.4 C (66.9 F)
1898
19.4 C (66.9 F)
1899
17.8 C (64.0 F)
1900
16.1 C (61.0 F)
1901
20.6 C (69.1 F)
1902
20.0 C (68.0 F)
1903
18.3 C (64.9 F)
1904
21.1 C (70.0 F)
1905
20.0 C (68.0 F)
1906
7.8 C (46.0 F)
1907
18.3 C (64.9 F)
1908
18.3 C (64.9 F)
1909
18.9 C (66.0 F)
1911
18.9 C (66.0 F)
1912
14.4 C (57.9 F)
1913
15.6 C (60.1 F)
1914
11.1 C (52.0 F)
1916
2.2 C (36.0 F)
1917
20.0 C (68.0 F)
1918
18.3 C (64.9 F)
1919
16.7 C (62.1 F)
1920
16.7 C (62.1 F)
1921
17.8 C (64.0 F)
1922
17.8 C (64.0 F)
1923
18.3 C (64.9 F)
1924
18.3 C (64.9 F)
1925
20.6 C (69.1 F)
1926
15.6 C (60.1 F)
1927
17.8 C (64.0 F)
1928
18.3 C (64.9 F)
1929
17.8 C (64.0 F)
1930
20.0 C (68.0 F)
1931
17.2 C (63.0 F)
1932
19.4 C (66.9 F)
1933
11.7 C (53.1 F)
1934
20.6 C (69.1 F)
1935
16.7 C (62.1 F)
1936
20.0 C (68.0 F)
1937
21.1 C (70.0 F)
1938
19.4 C (66.9 F)
1939
17.8 C (64.0 F)
1940
19.4 C (66.9 F)
1941
17.2 C (63.0 F)
1942
18.9 C (66.0 F)
1943
18.9 C (66.0 F)
1944
22.2 C (72.0 F)
1945
20.0 C (68.0 F)
1946
18.9 C (66.0 F)
1947
20.0 C (68.0 F)
1948
19.4 C (66.9 F)
1949
18.3 C (64.9 F)
1950
16.7 C (62.1 F)
1951
22.2 C (72.0 F)
1952
22.8 C (73.0 F)
1953
17.2 C (63.0 F)
1954
20.6 C (69.1 F)
1955
16.7 C (62.1 F)
1956
20.0 C (68.0 F)
1957
19.4 C (66.9 F)
1958
18.3 C (64.9 F)
1959
20.0 C (68.0 F)
1960
20.0 C (68.0 F)
1961
18.3 C (64.9 F)
1962
19.4 C (66.9 F)
1963
17.2 C (63.0 F)
1964
17.8 C (64.0 F)
1965
18.3 C (64.9 F)
1966
20.6 C (69.1 F)
1967
22.2 C (72.0 F)
1968
17.2 C (63.0 F)
1969
20.0 C (68.0 F)
Coldest night (TNn)
The coldest night of the year at Belle Isle, 1871 to 1969. The record is -35.0 C (-31.0 F) in 1919, marked on the chart; the median year is -27.8 C (-18.0 F).
Coldest night (TNn) at Belle Isle by year
Year
Coldest night (TNn)
1871
n/a
1872
n/a
1873
n/a
1877
n/a
1878
n/a
1879
n/a
1880
n/a
1884
-25.0 C (-13.0 F)
1885
-28.3 C (-18.9 F)
1886
-29.4 C (-20.9 F)
1887
-32.8 C (-27.0 F)
1888
-27.8 C (-18.0 F)
1889
-32.2 C (-26.0 F)
1890
-29.4 C (-20.9 F)
1891
-30.6 C (-23.1 F)
1892
-27.2 C (-17.0 F)
1893
-30.6 C (-23.1 F)
1894
-29.4 C (-20.9 F)
1895
-26.1 C (-15.0 F)
1896
-25.0 C (-13.0 F)
1897
-28.3 C (-18.9 F)
1898
-27.8 C (-18.0 F)
1899
-30.0 C (-22.0 F)
1900
-27.2 C (-17.0 F)
1901
-29.4 C (-20.9 F)
1902
-25.0 C (-13.0 F)
1903
-25.6 C (-14.1 F)
1904
-31.7 C (-25.1 F)
1905
-32.8 C (-27.0 F)
1906
-27.8 C (-18.0 F)
1907
-29.4 C (-20.9 F)
1908
-23.3 C (-9.9 F)
1909
-25.6 C (-14.1 F)
1911
-19.4 C (-2.9 F)
1912
-28.9 C (-20.0 F)
1913
-32.2 C (-26.0 F)
1914
-27.8 C (-18.0 F)
1916
-15.0 C (5.0 F)
1917
-28.9 C (-20.0 F)
1918
-34.4 C (-29.9 F)
1919
-35.0 C (-31.0 F)
1920
-21.1 C (-6.0 F)
1921
-34.4 C (-29.9 F)
1922
-31.1 C (-24.0 F)
1923
-33.3 C (-27.9 F)
1924
-26.1 C (-15.0 F)
1925
-32.8 C (-27.0 F)
1926
-28.9 C (-20.0 F)
1927
-30.0 C (-22.0 F)
1928
-28.9 C (-20.0 F)
1929
-27.2 C (-17.0 F)
1930
-26.1 C (-15.0 F)
1931
-23.9 C (-11.0 F)
1932
-28.9 C (-20.0 F)
1933
-28.3 C (-18.9 F)
1934
-28.9 C (-20.0 F)
1935
-34.4 C (-29.9 F)
1936
-24.4 C (-11.9 F)
1937
-30.0 C (-22.0 F)
1938
-31.1 C (-24.0 F)
1939
-27.2 C (-17.0 F)
1940
-26.1 C (-15.0 F)
1941
-25.6 C (-14.1 F)
1942
-28.3 C (-18.9 F)
1943
-26.1 C (-15.0 F)
1944
-25.6 C (-14.1 F)
1945
-27.8 C (-18.0 F)
1946
-27.2 C (-17.0 F)
1947
-27.2 C (-17.0 F)
1948
-27.8 C (-18.0 F)
1949
-29.4 C (-20.9 F)
1950
-28.9 C (-20.0 F)
1951
-31.1 C (-24.0 F)
1952
-24.4 C (-11.9 F)
1953
-26.1 C (-15.0 F)
1954
-20.0 C (-4.0 F)
1955
-25.0 C (-13.0 F)
1956
-23.9 C (-11.0 F)
1957
-31.1 C (-24.0 F)
1958
-27.2 C (-17.0 F)
1959
-27.2 C (-17.0 F)
1960
-23.3 C (-9.9 F)
1961
-26.1 C (-15.0 F)
1962
-26.7 C (-16.1 F)
1963
-24.4 C (-11.9 F)
1964
-26.7 C (-16.1 F)
1965
-23.9 C (-11.0 F)
1966
-23.9 C (-11.0 F)
1967
-26.7 C (-16.1 F)
1968
-22.2 C (-8.0 F)
1969
-20.0 C (-4.0 F)
Wettest day (Rx1day)
The wettest day of the year at Belle Isle, 1871 to 1969. The record is 152.4 mm (6.0 in) in 1919, marked on the chart; the median year is 50.0 mm (2.0 in).
Wettest day (Rx1day) at Belle Isle by year
Year
Wettest day (Rx1day)
1871
112.5 mm (4.4 in)
1872
119.4 mm (4.7 in)
1873
67.6 mm (2.7 in)
1877
51.1 mm (2.0 in)
1878
103.1 mm (4.1 in)
1879
76.2 mm (3.0 in)
1880
53.1 mm (2.1 in)
1884
76.5 mm (3.0 in)
1885
n/a
1886
n/a
1887
53.3 mm (2.1 in)
1888
76.5 mm (3.0 in)
1889
n/a
1890
48.3 mm (1.9 in)
1891
25.7 mm (1.0 in)
1892
52.3 mm (2.1 in)
1893
68.6 mm (2.7 in)
1894
33.0 mm (1.3 in)
1895
66.0 mm (2.6 in)
1896
53.1 mm (2.1 in)
1897
38.1 mm (1.5 in)
1898
60.5 mm (2.4 in)
1899
n/a
1900
61.0 mm (2.4 in)
1901
36.3 mm (1.4 in)
1902
112.5 mm (4.4 in)
1903
40.6 mm (1.6 in)
1904
52.1 mm (2.1 in)
1905
51.1 mm (2.0 in)
1906
53.6 mm (2.1 in)
1907
54.9 mm (2.2 in)
1908
10.2 mm (0.4 in)
1909
77.7 mm (3.1 in)
1911
50.3 mm (2.0 in)
1912
38.1 mm (1.5 in)
1913
39.4 mm (1.6 in)
1914
30.5 mm (1.2 in)
1916
4.6 mm (0.18 in)
1917
39.4 mm (1.6 in)
1918
40.6 mm (1.6 in)
1919
152.4 mm (6.0 in)
1920
29.5 mm (1.2 in)
1921
49.3 mm (1.9 in)
1922
28.7 mm (1.1 in)
1923
39.6 mm (1.6 in)
1924
64.0 mm (2.5 in)
1925
48.8 mm (1.9 in)
1926
65.0 mm (2.6 in)
1927
58.9 mm (2.3 in)
1928
50.0 mm (2.0 in)
1929
41.4 mm (1.6 in)
1930
16.3 mm (0.6 in)
1931
57.2 mm (2.3 in)
1932
32.0 mm (1.3 in)
1933
23.6 mm (0.9 in)
1934
63.5 mm (2.5 in)
1935
26.4 mm (1.0 in)
1936
61.7 mm (2.4 in)
1937
30.2 mm (1.2 in)
1938
36.8 mm (1.4 in)
1939
39.9 mm (1.6 in)
1940
34.0 mm (1.3 in)
1941
52.3 mm (2.1 in)
1942
37.6 mm (1.5 in)
1943
54.9 mm (2.2 in)
1944
58.9 mm (2.3 in)
1945
45.7 mm (1.8 in)
1946
33.3 mm (1.3 in)
1947
25.4 mm (1.0 in)
1948
68.6 mm (2.7 in)
1949
83.1 mm (3.3 in)
1950
39.9 mm (1.6 in)
1951
41.4 mm (1.6 in)
1952
30.2 mm (1.2 in)
1953
56.9 mm (2.2 in)
1954
66.0 mm (2.6 in)
1955
45.7 mm (1.8 in)
1956
30.0 mm (1.2 in)
1957
50.3 mm (2.0 in)
1958
55.9 mm (2.2 in)
1959
33.0 mm (1.3 in)
1960
32.0 mm (1.3 in)
1961
41.7 mm (1.6 in)
1962
46.5 mm (1.8 in)
1963
43.4 mm (1.7 in)
1964
56.6 mm (2.2 in)
1965
65.5 mm (2.6 in)
1966
49.5 mm (1.9 in)
1967
56.9 mm (2.2 in)
1968
39.4 mm (1.6 in)
1969
56.6 mm (2.2 in)
Wettest five days (Rx5day)
The wettest five days of the year at Belle Isle, 1871 to 1969. The record is 261.6 mm (10.3 in) in 1871, marked on the chart; the median year is 72.7 mm (2.9 in).
Wettest five days (Rx5day) at Belle Isle by year
Year
Wettest five days (Rx5day)
1871
261.6 mm (10.3 in)
1872
236.0 mm (9.3 in)
1873
131.1 mm (5.2 in)
1877
78.6 mm (3.1 in)
1878
129.8 mm (5.1 in)
1879
131.1 mm (5.2 in)
1880
131.1 mm (5.2 in)
1884
226.9 mm (8.9 in)
1885
n/a
1886
n/a
1887
83.3 mm (3.3 in)
1888
105.9 mm (4.2 in)
1889
n/a
1890
76.4 mm (3.0 in)
1891
35.6 mm (1.4 in)
1892
172.7 mm (6.8 in)
1893
151.4 mm (6.0 in)
1894
37.3 mm (1.5 in)
1895
165.9 mm (6.5 in)
1896
79.0 mm (3.1 in)
1897
66.0 mm (2.6 in)
1898
117.9 mm (4.6 in)
1899
n/a
1900
67.3 mm (2.6 in)
1901
126.2 mm (5.0 in)
1902
117.8 mm (4.6 in)
1903
83.3 mm (3.3 in)
1904
116.9 mm (4.6 in)
1905
95.6 mm (3.8 in)
1906
185.4 mm (7.3 in)
1907
139.4 mm (5.5 in)
1908
17.8 mm (0.7 in)
1909
94.2 mm (3.7 in)
1911
58.9 mm (2.3 in)
1912
57.6 mm (2.3 in)
1913
72.7 mm (2.9 in)
1914
50.8 mm (2.0 in)
1916
4.6 mm (0.18 in)
1917
49.8 mm (2.0 in)
1918
53.6 mm (2.1 in)
1919
161.8 mm (6.4 in)
1920
64.3 mm (2.5 in)
1921
72.9 mm (2.9 in)
1922
48.0 mm (1.9 in)
1923
69.6 mm (2.7 in)
1924
82.8 mm (3.3 in)
1925
71.2 mm (2.8 in)
1926
65.5 mm (2.6 in)
1927
58.9 mm (2.3 in)
1928
82.0 mm (3.2 in)
1929
70.1 mm (2.8 in)
1930
40.0 mm (1.6 in)
1931
57.2 mm (2.3 in)
1932
42.9 mm (1.7 in)
1933
43.2 mm (1.7 in)
1934
133.6 mm (5.3 in)
1935
55.9 mm (2.2 in)
1936
67.5 mm (2.7 in)
1937
47.7 mm (1.9 in)
1938
70.3 mm (2.8 in)
1939
77.9 mm (3.1 in)
1940
56.1 mm (2.2 in)
1941
97.0 mm (3.8 in)
1942
62.0 mm (2.4 in)
1943
95.0 mm (3.7 in)
1944
78.4 mm (3.1 in)
1945
64.0 mm (2.5 in)
1946
48.4 mm (1.9 in)
1947
88.6 mm (3.5 in)
1948
100.1 mm (3.9 in)
1949
97.3 mm (3.8 in)
1950
61.7 mm (2.4 in)
1951
68.9 mm (2.7 in)
1952
62.7 mm (2.5 in)
1953
114.6 mm (4.5 in)
1954
82.6 mm (3.3 in)
1955
56.9 mm (2.2 in)
1956
45.7 mm (1.8 in)
1957
72.7 mm (2.9 in)
1958
96.1 mm (3.8 in)
1959
41.9 mm (1.6 in)
1960
64.5 mm (2.5 in)
1961
63.3 mm (2.5 in)
1962
83.3 mm (3.3 in)
1963
83.0 mm (3.3 in)
1964
77.8 mm (3.1 in)
1965
104.6 mm (4.1 in)
1966
71.7 mm (2.8 in)
1967
72.4 mm (2.9 in)
1968
66.5 mm (2.6 in)
1969
65.3 mm (2.6 in)
Longest dry spell (CDD)
The longest dry spell of the year at Belle Isle, 1871 to 1969. The record is 78 days in 1957, marked on the chart; the median year is 18 days.
Longest dry spell (CDD) at Belle Isle by year
Year
Longest dry spell (CDD)
1871
17 days
1872
11 days
1873
19 days
1877
10 days
1878
24 days
1879
9 days
1880
13 days
1884
7 days
1885
n/a
1886
n/a
1887
4 days
1888
21 days
1889
n/a
1890
23 days
1891
14 days
1892
17 days
1893
15 days
1894
19 days
1895
16 days
1896
16 days
1897
19 days
1898
20 days
1899
n/a
1900
18 days
1901
31 days
1902
18 days
1903
24 days
1904
29 days
1905
27 days
1906
15 days
1907
19 days
1908
8 days
1909
12 days
1911
44 days
1912
22 days
1913
18 days
1914
23 days
1916
9 days
1917
21 days
1918
22 days
1919
30 days
1920
19 days
1921
24 days
1922
19 days
1923
21 days
1924
22 days
1925
22 days
1926
17 days
1927
16 days
1928
30 days
1929
32 days
1930
32 days
1931
20 days
1932
31 days
1933
14 days
1934
13 days
1935
18 days
1936
11 days
1937
30 days
1938
25 days
1939
10 days
1940
11 days
1941
8 days
1942
21 days
1943
17 days
1944
29 days
1945
11 days
1946
23 days
1947
37 days
1948
26 days
1949
12 days
1950
15 days
1951
12 days
1952
17 days
1953
14 days
1954
16 days
1955
11 days
1956
36 days
1957
78 days
1958
10 days
1959
17 days
1960
17 days
1961
19 days
1962
14 days
1963
10 days
1964
17 days
1965
9 days
1966
15 days
1967
9 days
1968
20 days
1969
9 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
68 years with a frost
Across 68 years with a frost, the median last spring frost at Belle Isle falls on 21 June and the median first autumn frost on 29 September, which leaves a median of 103 days between them.
In 1936 to 1969 the median growing season was 105 days. That is 9 days more than in 1885 to 1924.
Fitted over all years, the growing season changes by +2.1 days per decade at this station.
Frost dates and growing season at Belle Isle
Measure
Median, all years
Earliest period (1885 to 1924)
Recent period (1936 to 1969)
Recent against earliest
Fitted trend
Last spring frost
21 June
22 June
21 June
1 day earlier
+0.4 days per decade
First autumn frost
29 September
19 September
30 September
11 days later
+2.5 days per decade
Growing days
103 days
96 days
105 days
9 days more
+2.1 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
44 years, 1901 to 1969
A day with at least 45.2 mm (1.8 in) of rain is expected about once in 2 years. A day with at least 101.0 mm (4.0 in) of rain is expected about once in 100 years.
Rainfall return levels at Belle Isle: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
45.2 mm (1.8 in)
5 years
58.6 mm (2.3 in)
10 years
68.1 mm (2.7 in)
25 years
80.8 mm (3.2 in)
50 years
90.7 mm (3.6 in)
Longer than the 44 years of record
100 years
101.0 mm (4.0 in)
Longer than the 44 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, 44 years of values from 1901 to 1969.
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: 112.5 mm (4.4 in) in 1902; 83.1 mm (3.3 in) in 1949; 68.6 mm (2.7 in) in 1948.
Download the Data
Data for Belle Isle standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Belle Isle 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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.