Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at North Bay. 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 North Bay, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
12.8 C (55.0 F)
-44.4 C (-47.9 F)
n/a
n/a
Feb
12.8 C (55.0 F)
-42.8 C (-45.0 F)
n/a
n/a
Mar
23.9 C (75.0 F)
-37.2 C (-35.0 F)
n/a
n/a
Apr
28.9 C (84.0 F)
-21.7 C (-7.1 F)
n/a
n/a
May
32.2 C (90.0 F)
-9.4 C (15.1 F)
n/a
n/a
Jun
36.1 C (97.0 F)
-3.3 C (26.1 F)
n/a
n/a
Jul
37.2 C (99.0 F)
-2.2 C (28.0 F)
n/a
n/a
Aug
34.4 C (93.9 F)
0.0 C (32.0 F)
n/a
n/a
Sep
34.4 C (93.9 F)
-5.0 C (23.0 F)
n/a
n/a
Oct
27.8 C (82.0 F)
-12.8 C (9.0 F)
n/a
n/a
Nov
21.1 C (70.0 F)
-26.1 C (-15.0 F)
n/a
n/a
Dec
13.9 C (57.0 F)
-43.3 C (-45.9 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at North Bay still stand. 1888 holds the most, with 61.
Standing records at North Bay by the year they were set
Year set
Standing records
1887
3
1888
61
1889
25
1890
3
1891
8
1892
11
1893
1
1894
21
1895
38
1896
25
1897
44
1898
4
1899
22
1900
11
1902
15
1903
9
1915
13
1916
27
1917
18
1918
22
1919
28
1920
5
1924
6
1925
22
1926
16
1927
19
1928
15
1929
24
1930
14
1931
15
1932
16
1933
30
1934
25
1935
9
1936
27
1937
17
1938
16
1939
10
1940
16
1941
8
1942
20
1943
19
1944
15
1945
28
1946
34
1947
26
1948
18
1949
26
1950
24
1951
27
1952
12
1953
17
1954
21
1955
17
1956
19
1957
22
1958
18
1959
17
1960
3
1961
15
1962
15
1963
23
1964
23
1965
23
1966
10
1967
12
1968
22
1969
13
1970
15
1971
19
1972
14
1973
20
1974
13
1975
19
1976
16
1977
15
1978
10
1979
22
1980
16
1981
25
1982
2
All-Time Record Progression
1 new records
1 all-time records were set at North Bay between 21 August 1972 and 21 August 1972. Each dot is a new record.
When North Bay set new all-time records
Date
Kind
Detail
1972-08-21
Record daily precipitation
Record daily precipitation 83.8 mm (3.3 in)
Wettest Day of Each Month
Aug: 83.8 mm (3.3 in)
The wettest day on record for each calendar month at North Bay. The most was 83.8 mm (3.3 in) on 21 August 1972.
Record daily precipitation for each month at North Bay
Month
Record daily precipitation (mm)
Date
Jan
30.2 mm (1.2 in)
25 January 1950
Feb
37.8 mm (1.5 in)
1 February 1968
Mar
38.1 mm (1.5 in)
16 March 1919
Apr
32.3 mm (1.3 in)
11 April 1947
May
47.2 mm (1.9 in)
16 May 1976
Jun
75.2 mm (3.0 in)
26 June 1973
Jul
81.3 mm (3.2 in)
5 July 1948
Aug
83.8 mm (3.3 in)
21 August 1972
Sep
74.9 mm (2.9 in)
21 September 1947
Oct
63.2 mm (2.5 in)
10 October 1932
Nov
47.5 mm (1.9 in)
7 November 1924
Dec
40.6 mm (1.6 in)
14 December 1901
Period of Record Coverage
1887 to 1982
Complete yearUnder 90 percent of days
82 years of record at North Bay, 1887 to 1982. 23 years have data for under 90 percent of days and are left out of rankings: 1887, 1888, 1889, 1890, 1891, 1892, 1893, 1894 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 55 complete years at North Bay, 1896 to 1981. Blue stripes are years cooler than the station's own mean of 4.5 C (40.0 F); red stripes are warmer. The coolest year was 1917, at 2.5 C (36.5 F), and the warmest was 1953, at 6.2 C (43.1 F). The strongest colour marks a difference of 2.0 C (3.6 F).
Annual mean temperature at North Bay as warming stripes, 1896 to 1981
Year
Annual mean temperature
Difference from the station mean
1896
2.7 C
-1.77 C
1916
4.4 C
-0.11 C
1917
2.5 C
-1.97 C
1918
3.9 C
-0.55 C
1925
4.0 C
-0.44 C
1926
2.8 C
-1.67 C
1928
4.0 C
-0.44 C
1929
3.6 C
-0.90 C
1931
6.1 C
+1.64 C
1932
5.3 C
+0.82 C
1933
4.5 C
+0.03 C
1934
3.4 C
-1.06 C
1936
3.8 C
-0.63 C
1937
5.8 C
+1.30 C
1938
5.1 C
+0.61 C
1939
3.9 C
-0.56 C
1940
3.5 C
-0.94 C
1941
5.0 C
+0.50 C
1942
5.0 C
+0.50 C
1943
3.6 C
-0.82 C
1944
4.8 C
+0.29 C
1945
4.4 C
-0.07 C
1946
4.8 C
+0.31 C
1947
4.6 C
+0.11 C
1948
5.0 C
+0.50 C
1949
5.2 C
+0.72 C
1950
3.7 C
-0.74 C
1951
4.5 C
+0.07 C
1952
5.4 C
+0.90 C
1953
6.2 C
+1.69 C
1954
4.4 C
-0.08 C
1955
5.2 C
+0.75 C
1956
3.9 C
-0.56 C
1958
4.2 C
-0.23 C
1959
4.5 C
0.00 C
1960
4.6 C
+0.13 C
1961
4.9 C
+0.48 C
1962
4.6 C
+0.17 C
1963
4.3 C
-0.19 C
1964
5.5 C
+1.03 C
1965
4.1 C
-0.36 C
1966
4.8 C
+0.31 C
1967
4.3 C
-0.15 C
1968
5.0 C
+0.53 C
1971
4.9 C
+0.44 C
1972
3.5 C
-0.97 C
1973
5.7 C
+1.23 C
1974
4.3 C
-0.20 C
1975
5.4 C
+0.95 C
1976
3.7 C
-0.73 C
1977
5.1 C
+0.66 C
1978
3.8 C
-0.64 C
1979
4.7 C
+0.20 C
1980
3.7 C
-0.74 C
1981
5.4 C
+0.89 C
The annual mean temperature here has risen by 0.14 C (0.03 to 0.25) per decade over 1896 to 1981. In Fahrenheit: 0.3 F (0.1 to 0.4) per decade. The slope is a straight line fitted to 55 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at North Bay
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.14 C (0.03 to 0.25) per decade
0.3 F (0.1 to 0.4) per decade
1896 to 1981
55
Rise
Mean daily maximum
0.1 C (-0.1 to 0.2) per decade
0.1 F (-0.1 to 0.3) per decade
1896 to 1981
55
Not clearly different from zero
Mean daily minimum
0.2 C (0.1 to 0.3) per decade
0.4 F (0.2 to 0.6) per decade
1896 to 1981
55
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
1887 to 1982
Yearly extremes at North Bay: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
37.2 C (99.0 F)
1931
31.7 C (89.1 F)
82
Coldest night (TNn)
-44.4 C (-47.9 F)
1892
-35.3 C (-31.5 F)
82
Wettest day (Rx1day)
83.8 mm (3.3 in)
1972
40.6 mm (1.6 in)
70
Wettest five days (Rx5day)
132.8 mm (5.2 in)
1972
61.3 mm (2.4 in)
70
Longest dry spell (CDD)
36 days
1927
14 days
70
Hottest day (TXx)
The hottest day of the year at North Bay, 1887 to 1982. The record is 37.2 C (99.0 F) in 1931, marked on the chart; the median year is 31.7 C (89.1 F).
Hottest day (TXx) at North Bay by year
Year
Hottest day (TXx)
1887
7.2 C (45.0 F)
1888
30.0 C (86.0 F)
1889
34.4 C (93.9 F)
1890
31.1 C (88.0 F)
1891
26.1 C (79.0 F)
1892
31.1 C (88.0 F)
1893
22.2 C (72.0 F)
1894
32.8 C (91.0 F)
1895
31.7 C (89.1 F)
1896
30.6 C (87.1 F)
1897
36.7 C (98.1 F)
1898
25.6 C (78.1 F)
1899
2.2 C (36.0 F)
1900
26.7 C (80.1 F)
1901
7.2 C (45.0 F)
1902
28.9 C (84.0 F)
1903
16.1 C (61.0 F)
1915
30.6 C (87.1 F)
1916
35.6 C (96.1 F)
1917
34.4 C (93.9 F)
1918
35.6 C (96.1 F)
1919
36.1 C (97.0 F)
1920
22.8 C (73.0 F)
1924
28.3 C (82.9 F)
1925
31.7 C (89.1 F)
1926
30.0 C (86.0 F)
1927
35.6 C (96.1 F)
1928
31.7 C (89.1 F)
1929
31.1 C (88.0 F)
1930
31.1 C (88.0 F)
1931
37.2 C (99.0 F)
1932
31.1 C (88.0 F)
1933
32.2 C (90.0 F)
1934
32.2 C (90.0 F)
1935
32.8 C (91.0 F)
1936
36.7 C (98.1 F)
1937
33.3 C (91.9 F)
1938
32.2 C (90.0 F)
1939
32.8 C (91.0 F)
1940
32.8 C (91.0 F)
1941
33.9 C (93.0 F)
1942
31.7 C (89.1 F)
1943
33.9 C (93.0 F)
1944
33.9 C (93.0 F)
1945
32.2 C (90.0 F)
1946
31.7 C (89.1 F)
1947
34.4 C (93.9 F)
1948
33.9 C (93.0 F)
1949
32.2 C (90.0 F)
1950
30.0 C (86.0 F)
1951
30.0 C (86.0 F)
1952
31.7 C (89.1 F)
1953
34.4 C (93.9 F)
1954
28.9 C (84.0 F)
1955
33.9 C (93.0 F)
1956
32.8 C (91.0 F)
1957
31.1 C (88.0 F)
1958
30.6 C (87.1 F)
1959
31.7 C (89.1 F)
1960
29.4 C (84.9 F)
1961
29.4 C (84.9 F)
1962
32.2 C (90.0 F)
1963
33.3 C (91.9 F)
1964
33.9 C (93.0 F)
1965
29.4 C (84.9 F)
1966
33.9 C (93.0 F)
1967
30.0 C (86.0 F)
1968
32.8 C (91.0 F)
1969
32.2 C (90.0 F)
1970
32.2 C (90.0 F)
1971
31.1 C (88.0 F)
1972
30.0 C (86.0 F)
1973
31.1 C (88.0 F)
1974
30.6 C (87.1 F)
1975
34.4 C (93.9 F)
1976
29.4 C (84.9 F)
1977
33.3 C (91.9 F)
1978
32.0 C (89.6 F)
1979
31.5 C (88.7 F)
1980
31.0 C (87.8 F)
1981
32.5 C (90.5 F)
1982
3.0 C (37.4 F)
Coldest night (TNn)
The coldest night of the year at North Bay, 1887 to 1982. The record is -44.4 C (-47.9 F) in 1892, marked on the chart; the median year is -35.3 C (-31.5 F).
Coldest night (TNn) at North Bay by year
Year
Coldest night (TNn)
1887
-30.0 C (-22.0 F)
1888
-37.2 C (-35.0 F)
1889
-36.7 C (-34.1 F)
1890
-28.3 C (-18.9 F)
1891
-34.4 C (-29.9 F)
1892
-44.4 C (-47.9 F)
1893
-34.4 C (-29.9 F)
1894
-27.8 C (-18.0 F)
1895
-41.1 C (-42.0 F)
1896
-35.6 C (-32.1 F)
1897
-31.7 C (-25.1 F)
1898
-36.1 C (-33.0 F)
1899
-39.4 C (-38.9 F)
1900
-36.1 C (-33.0 F)
1901
-26.7 C (-16.1 F)
1902
-33.9 C (-29.0 F)
1903
-36.1 C (-33.0 F)
1915
-23.3 C (-9.9 F)
1916
-30.6 C (-23.1 F)
1917
-40.0 C (-40.0 F)
1918
-41.1 C (-42.0 F)
1919
-32.2 C (-26.0 F)
1920
-30.0 C (-22.0 F)
1924
-33.3 C (-27.9 F)
1925
-34.4 C (-29.9 F)
1926
-36.7 C (-34.1 F)
1927
-37.2 C (-35.0 F)
1928
-35.6 C (-32.1 F)
1929
-35.6 C (-32.1 F)
1930
-35.0 C (-31.0 F)
1931
-33.9 C (-29.0 F)
1932
-33.3 C (-27.9 F)
1933
-43.3 C (-45.9 F)
1934
-41.1 C (-42.0 F)
1935
-36.7 C (-34.1 F)
1936
-34.4 C (-29.9 F)
1937
-29.4 C (-20.9 F)
1938
-33.9 C (-29.0 F)
1939
-36.7 C (-34.1 F)
1940
-32.8 C (-27.0 F)
1941
-37.2 C (-35.0 F)
1942
-41.7 C (-43.1 F)
1943
-40.0 C (-40.0 F)
1944
-33.9 C (-29.0 F)
1945
-39.4 C (-38.9 F)
1946
-35.6 C (-32.1 F)
1947
-35.6 C (-32.1 F)
1948
-38.9 C (-38.0 F)
1949
-29.4 C (-20.9 F)
1950
-37.2 C (-35.0 F)
1951
-39.4 C (-38.9 F)
1952
-37.8 C (-36.0 F)
1953
-32.2 C (-26.0 F)
1954
-35.6 C (-32.1 F)
1955
-33.9 C (-29.0 F)
1956
-30.0 C (-22.0 F)
1957
-36.7 C (-34.1 F)
1958
-34.4 C (-29.9 F)
1959
-34.4 C (-29.9 F)
1960
-35.6 C (-32.1 F)
1961
-32.2 C (-26.0 F)
1962
-34.4 C (-29.9 F)
1963
-35.0 C (-31.0 F)
1964
-34.4 C (-29.9 F)
1965
-36.7 C (-34.1 F)
1966
-33.3 C (-27.9 F)
1967
-37.2 C (-35.0 F)
1968
-37.8 C (-36.0 F)
1969
-31.7 C (-25.1 F)
1970
-31.7 C (-25.1 F)
1971
-36.1 C (-33.0 F)
1972
-36.7 C (-34.1 F)
1973
-32.2 C (-26.0 F)
1974
-30.6 C (-23.1 F)
1975
-33.9 C (-29.0 F)
1976
-37.8 C (-36.0 F)
1977
-32.0 C (-25.6 F)
1978
-32.2 C (-26.0 F)
1979
-35.0 C (-31.0 F)
1980
-37.0 C (-34.6 F)
1981
-38.0 C (-36.4 F)
1982
-36.0 C (-32.8 F)
Wettest day (Rx1day)
The wettest day of the year at North Bay, 1887 to 1982. The record is 83.8 mm (3.3 in) in 1972, marked on the chart; the median year is 40.6 mm (1.6 in).
Wettest day (Rx1day) at North Bay by year
Year
Wettest day (Rx1day)
1887
17.8 mm (0.7 in)
1888
n/a
1889
n/a
1890
15.2 mm (0.6 in)
1891
n/a
1892
n/a
1893
n/a
1894
n/a
1895
12.7 mm (0.5 in)
1896
5.1 mm (0.20 in)
1897
n/a
1898
n/a
1899
n/a
1900
n/a
1901
40.6 mm (1.6 in)
1902
n/a
1903
n/a
1915
35.8 mm (1.4 in)
1916
32.5 mm (1.3 in)
1917
32.3 mm (1.3 in)
1918
39.6 mm (1.6 in)
1919
56.1 mm (2.2 in)
1920
12.7 mm (0.5 in)
1924
47.5 mm (1.9 in)
1925
26.4 mm (1.0 in)
1926
32.3 mm (1.3 in)
1927
34.3 mm (1.4 in)
1928
41.7 mm (1.6 in)
1929
28.7 mm (1.1 in)
1930
32.5 mm (1.3 in)
1931
33.5 mm (1.3 in)
1932
63.2 mm (2.5 in)
1933
36.8 mm (1.4 in)
1934
35.6 mm (1.4 in)
1935
76.2 mm (3.0 in)
1936
20.3 mm (0.8 in)
1937
22.9 mm (0.9 in)
1938
36.8 mm (1.4 in)
1939
25.4 mm (1.0 in)
1940
55.6 mm (2.2 in)
1941
39.4 mm (1.6 in)
1942
34.8 mm (1.4 in)
1943
54.6 mm (2.1 in)
1944
59.4 mm (2.3 in)
1945
32.8 mm (1.3 in)
1946
29.0 mm (1.1 in)
1947
74.9 mm (2.9 in)
1948
81.3 mm (3.2 in)
1949
33.5 mm (1.3 in)
1950
30.2 mm (1.2 in)
1951
42.4 mm (1.7 in)
1952
69.1 mm (2.7 in)
1953
29.5 mm (1.2 in)
1954
48.5 mm (1.9 in)
1955
43.2 mm (1.7 in)
1956
40.4 mm (1.6 in)
1957
50.3 mm (2.0 in)
1958
40.6 mm (1.6 in)
1959
49.3 mm (1.9 in)
1960
56.1 mm (2.2 in)
1961
41.1 mm (1.6 in)
1962
30.0 mm (1.2 in)
1963
42.9 mm (1.7 in)
1964
27.9 mm (1.1 in)
1965
53.6 mm (2.1 in)
1966
40.6 mm (1.6 in)
1967
47.8 mm (1.9 in)
1968
49.3 mm (1.9 in)
1969
50.8 mm (2.0 in)
1970
66.0 mm (2.6 in)
1971
51.8 mm (2.0 in)
1972
83.8 mm (3.3 in)
1973
75.2 mm (3.0 in)
1974
46.2 mm (1.8 in)
1975
60.5 mm (2.4 in)
1976
47.2 mm (1.9 in)
1977
36.3 mm (1.4 in)
1978
46.0 mm (1.8 in)
1979
30.6 mm (1.2 in)
1980
45.6 mm (1.8 in)
1981
42.5 mm (1.7 in)
1982
17.0 mm (0.7 in)
Wettest five days (Rx5day)
The wettest five days of the year at North Bay, 1887 to 1982. The record is 132.8 mm (5.2 in) in 1972, marked on the chart; the median year is 61.3 mm (2.4 in).
Wettest five days (Rx5day) at North Bay by year
Year
Wettest five days (Rx5day)
1887
22.9 mm (0.9 in)
1888
n/a
1889
n/a
1890
38.0 mm (1.5 in)
1891
n/a
1892
n/a
1893
n/a
1894
n/a
1895
34.3 mm (1.4 in)
1896
5.1 mm (0.20 in)
1897
n/a
1898
n/a
1899
n/a
1900
n/a
1901
62.2 mm (2.4 in)
1902
n/a
1903
n/a
1915
39.3 mm (1.5 in)
1916
65.7 mm (2.6 in)
1917
53.2 mm (2.1 in)
1918
54.4 mm (2.1 in)
1919
86.8 mm (3.4 in)
1920
24.1 mm (0.9 in)
1924
61.5 mm (2.4 in)
1925
52.0 mm (2.0 in)
1926
70.6 mm (2.8 in)
1927
44.7 mm (1.8 in)
1928
79.3 mm (3.1 in)
1929
59.9 mm (2.4 in)
1930
52.6 mm (2.1 in)
1931
51.0 mm (2.0 in)
1932
78.4 mm (3.1 in)
1933
53.2 mm (2.1 in)
1934
64.0 mm (2.5 in)
1935
78.7 mm (3.1 in)
1936
31.8 mm (1.3 in)
1937
45.7 mm (1.8 in)
1938
59.9 mm (2.4 in)
1939
46.8 mm (1.8 in)
1940
79.5 mm (3.1 in)
1941
61.0 mm (2.4 in)
1942
45.0 mm (1.8 in)
1943
114.4 mm (4.5 in)
1944
84.3 mm (3.3 in)
1945
49.0 mm (1.9 in)
1946
53.6 mm (2.1 in)
1947
127.2 mm (5.0 in)
1948
110.5 mm (4.4 in)
1949
79.6 mm (3.1 in)
1950
45.4 mm (1.8 in)
1951
67.8 mm (2.7 in)
1952
100.6 mm (4.0 in)
1953
42.4 mm (1.7 in)
1954
91.1 mm (3.6 in)
1955
91.0 mm (3.6 in)
1956
83.3 mm (3.3 in)
1957
92.0 mm (3.6 in)
1958
48.2 mm (1.9 in)
1959
71.3 mm (2.8 in)
1960
69.3 mm (2.7 in)
1961
52.3 mm (2.1 in)
1962
39.7 mm (1.6 in)
1963
70.9 mm (2.8 in)
1964
51.3 mm (2.0 in)
1965
92.9 mm (3.7 in)
1966
57.1 mm (2.2 in)
1967
55.7 mm (2.2 in)
1968
68.9 mm (2.7 in)
1969
69.0 mm (2.7 in)
1970
90.4 mm (3.6 in)
1971
55.6 mm (2.2 in)
1972
132.8 mm (5.2 in)
1973
82.9 mm (3.3 in)
1974
69.6 mm (2.7 in)
1975
98.6 mm (3.9 in)
1976
63.4 mm (2.5 in)
1977
52.6 mm (2.1 in)
1978
54.6 mm (2.1 in)
1979
52.2 mm (2.1 in)
1980
80.8 mm (3.2 in)
1981
96.4 mm (3.8 in)
1982
27.0 mm (1.1 in)
Longest dry spell (CDD)
The longest dry spell of the year at North Bay, 1887 to 1982. The record is 36 days in 1927, marked on the chart; the median year is 14 days.
Longest dry spell (CDD) at North Bay by year
Year
Longest dry spell (CDD)
1887
6 days
1888
n/a
1889
n/a
1890
26 days
1891
n/a
1892
n/a
1893
n/a
1894
n/a
1895
9 days
1896
10 days
1897
n/a
1898
n/a
1899
n/a
1900
n/a
1901
17 days
1902
n/a
1903
n/a
1915
14 days
1916
11 days
1917
20 days
1918
20 days
1919
20 days
1920
20 days
1924
12 days
1925
14 days
1926
14 days
1927
36 days
1928
12 days
1929
13 days
1930
15 days
1931
21 days
1932
16 days
1933
16 days
1934
12 days
1935
33 days
1936
26 days
1937
14 days
1938
11 days
1939
18 days
1940
12 days
1941
18 days
1942
15 days
1943
14 days
1944
18 days
1945
23 days
1946
12 days
1947
10 days
1948
18 days
1949
13 days
1950
14 days
1951
11 days
1952
19 days
1953
10 days
1954
17 days
1955
16 days
1956
16 days
1957
16 days
1958
17 days
1959
11 days
1960
13 days
1961
15 days
1962
13 days
1963
16 days
1964
13 days
1965
17 days
1966
14 days
1967
30 days
1968
14 days
1969
23 days
1970
14 days
1971
13 days
1972
18 days
1973
11 days
1974
9 days
1975
14 days
1976
16 days
1977
19 days
1978
15 days
1979
12 days
1980
11 days
1981
13 days
1982
5 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
55 years with a frost
Across 55 years with a frost, the median last spring frost at North Bay falls on 17 May and the median first autumn frost on 25 September, which leaves a median of 129 days between them.
Fitted over all years, the growing season changes by +1.4 days per decade at this station.
Frost dates and growing season at North Bay
Measure
Median, all years
Earliest period
Recent period (1949 to 1981)
Recent against earliest
Fitted trend
Last spring frost
17 May
n/a
16 May
n/a
-0.1 days per decade
First autumn frost
25 September
n/a
26 September
n/a
+1.3 days per decade
Growing days
129 days
n/a
134 days
n/a
+1.4 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
57 years, 1916 to 1981
A day with at least 42.5 mm (1.7 in) of rain is expected about once in 2 years. A day with at least 96.6 mm (3.8 in) of rain is expected about once in 100 years.
Rainfall return levels at North Bay: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
42.5 mm (1.7 in)
5 years
56.0 mm (2.2 in)
10 years
65.3 mm (2.6 in)
25 years
77.5 mm (3.1 in)
50 years
86.9 mm (3.4 in)
100 years
96.6 mm (3.8 in)
Longer than the 57 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, 57 years of values from 1916 to 1981.
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: 83.8 mm (3.3 in) in 1972; 81.3 mm (3.2 in) in 1948; 76.2 mm (3.0 in) in 1935.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for North Bay standing records by year: CSV or JSON. Field meanings are on the data page.
Data for North Bay 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.