Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at North Bay A. 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 A, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
12.2 C (54.0 F)
-40.0 C (-40.0 F)
n/a
n/a
Feb
10.0 C (50.0 F)
-39.4 C (-38.9 F)
n/a
n/a
Mar
23.9 C (75.0 F)
-36.7 C (-34.1 F)
n/a
n/a
Apr
27.2 C (81.0 F)
-21.1 C (-6.0 F)
n/a
n/a
May
31.6 C (88.9 F)
-8.3 C (17.1 F)
n/a
n/a
Jun
33.3 C (91.9 F)
-1.7 C (28.9 F)
n/a
n/a
Jul
33.9 C (93.0 F)
2.8 C (37.0 F)
n/a
n/a
Aug
33.3 C (91.9 F)
0.0 C (32.0 F)
n/a
n/a
Sep
33.3 C (91.9 F)
-4.4 C (24.1 F)
n/a
n/a
Oct
26.7 C (80.1 F)
-11.7 C (10.9 F)
n/a
n/a
Nov
20.0 C (68.0 F)
-23.9 C (-11.0 F)
n/a
n/a
Dec
14.4 C (57.9 F)
-36.7 C (-34.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at North Bay A still stand. 1946 holds the most, with 60.
Standing records at North Bay A by the year they were set
Year set
Standing records
1939
41
1940
43
1941
23
1942
39
1943
53
1944
39
1945
52
1946
60
1947
44
1948
34
1949
48
1950
42
1951
34
1952
22
1953
38
1954
25
1955
25
1956
40
1957
31
1958
30
1959
31
1960
9
1961
18
1962
26
1963
29
1964
42
1965
37
1966
33
1967
29
1968
26
1969
19
1970
23
1971
17
1972
26
1973
26
1974
28
1975
29
1976
40
1977
29
1978
28
1979
35
1980
29
1981
36
1982
33
1983
23
Wettest Day of Each Month
Aug: 96.3 mm (3.8 in)
The wettest day on record for each calendar month at North Bay A. The most was 96.3 mm (3.8 in) on 31 August 1952.
Record daily precipitation for each month at North Bay A
Month
Record daily precipitation (mm)
Date
Jan
31.8 mm (1.3 in)
9 January 1939
Feb
27.4 mm (1.1 in)
10 February 1960
Mar
48.3 mm (1.9 in)
10 March 1943
Apr
73.7 mm (2.9 in)
1 April 1939
May
50.0 mm (2.0 in)
31 May 1970
Jun
63.8 mm (2.5 in)
29 June 1957
Jul
75.1 mm (3.0 in)
24 July 1977
Aug
96.3 mm (3.8 in)
31 August 1952
Sep
66.8 mm (2.6 in)
13 September 1947
Oct
75.2 mm (3.0 in)
3 October 1983
Nov
37.1 mm (1.5 in)
10 November 1977
Dec
38.4 mm (1.5 in)
4 December 1961
Period of Record Coverage
1939 to 1983
Complete yearUnder 90 percent of days
45 years of record at North Bay A, 1939 to 1983. Every year has data for at least 90 percent of its days.
Cooler than the station meanWarmer than the station mean
One stripe for each of 45 complete years at North Bay A, 1939 to 1983. Blue stripes are years cooler than the station's own mean of 3.6 C (38.4 F); red stripes are warmer. The coolest year was 1972, at 2.4 C (36.3 F), and the warmest was 1953, at 5.3 C (41.5 F). The strongest colour marks a difference of 1.7 C (3.1 F).
Annual mean temperature at North Bay A as warming stripes, 1939 to 1983
Year
Annual mean temperature
Difference from the station mean
1939
3.0 C
-0.55 C
1940
2.4 C
-1.17 C
1941
3.8 C
+0.19 C
1942
3.8 C
+0.20 C
1943
2.6 C
-1.02 C
1944
4.1 C
+0.54 C
1945
3.5 C
-0.04 C
1946
3.9 C
+0.29 C
1947
3.5 C
-0.05 C
1948
3.9 C
+0.34 C
1949
4.3 C
+0.70 C
1950
2.9 C
-0.71 C
1951
3.6 C
-0.02 C
1952
4.5 C
+0.94 C
1953
5.3 C
+1.67 C
1954
3.6 C
+0.00 C
1955
4.5 C
+0.92 C
1956
3.1 C
-0.46 C
1957
4.1 C
+0.50 C
1958
3.5 C
-0.04 C
1959
3.7 C
+0.11 C
1960
3.9 C
+0.34 C
1961
4.1 C
+0.51 C
1962
3.6 C
+0.02 C
1963
3.3 C
-0.29 C
1964
4.0 C
+0.43 C
1965
2.9 C
-0.72 C
1966
3.3 C
-0.29 C
1967
3.1 C
-0.50 C
1968
3.7 C
+0.07 C
1969
3.5 C
-0.06 C
1970
3.1 C
-0.49 C
1971
3.8 C
+0.23 C
1972
2.4 C
-1.21 C
1973
4.5 C
+0.91 C
1974
3.0 C
-0.59 C
1975
4.2 C
+0.62 C
1976
2.5 C
-1.04 C
1977
3.8 C
+0.23 C
1978
2.8 C
-0.75 C
1979
3.6 C
-0.02 C
1980
2.6 C
-0.95 C
1981
4.1 C
+0.54 C
1982
3.5 C
-0.04 C
1983
4.2 C
+0.62 C
The fitted trend in annual mean temperature here over 1939 to 1983 is -0.04 C (-0.18 to 0.11) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.1 F (-0.3 to 0.2) per decade. The slope is a straight line fitted to 45 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at North Bay A
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.04 C (-0.18 to 0.11) per decade
-0.1 F (-0.3 to 0.2) per decade
1939 to 1983
45
Not clearly different from zero
Mean daily maximum
-0.10 C (-0.25 to 0.04) per decade
-0.2 F (-0.5 to 0.1) per decade
1939 to 1983
45
Not clearly different from zero
Mean daily minimum
0.03 C (-0.14 to 0.21) per decade
0.1 F (-0.2 to 0.4) per decade
1939 to 1983
45
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
1939 to 1983
Yearly extremes at North Bay A: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
33.9 C (93.0 F)
1966
30.6 C (87.1 F)
45
Coldest night (TNn)
-40.0 C (-40.0 F)
1942
-33.3 C (-27.9 F)
45
Wettest day (Rx1day)
96.3 mm (3.8 in)
1952
47.8 mm (1.9 in)
45
Wettest five days (Rx5day)
136.9 mm (5.4 in)
1972
79.1 mm (3.1 in)
45
Longest dry spell (CDD)
26 days
1961
14 days
45
Hottest day (TXx)
The hottest day of the year at North Bay A, 1939 to 1983. The record is 33.9 C (93.0 F) in 1966, marked on the chart; the median year is 30.6 C (87.1 F).
Hottest day (TXx) at North Bay A by year
Year
Hottest day (TXx)
1939
31.1 C (88.0 F)
1940
30.6 C (87.1 F)
1941
31.7 C (89.1 F)
1942
30.0 C (86.0 F)
1943
31.1 C (88.0 F)
1944
33.3 C (91.9 F)
1945
30.0 C (86.0 F)
1946
31.1 C (88.0 F)
1947
32.8 C (91.0 F)
1948
33.3 C (91.9 F)
1949
32.2 C (90.0 F)
1950
29.4 C (84.9 F)
1951
28.9 C (84.0 F)
1952
31.7 C (89.1 F)
1953
33.3 C (91.9 F)
1954
28.3 C (82.9 F)
1955
32.8 C (91.0 F)
1956
31.1 C (88.0 F)
1957
29.4 C (84.9 F)
1958
28.3 C (82.9 F)
1959
31.1 C (88.0 F)
1960
27.8 C (82.0 F)
1961
28.3 C (82.9 F)
1962
30.6 C (87.1 F)
1963
32.2 C (90.0 F)
1964
31.7 C (89.1 F)
1965
27.2 C (81.0 F)
1966
33.9 C (93.0 F)
1967
29.4 C (84.9 F)
1968
31.7 C (89.1 F)
1969
29.4 C (84.9 F)
1970
31.1 C (88.0 F)
1971
29.4 C (84.9 F)
1972
28.3 C (82.9 F)
1973
29.4 C (84.9 F)
1974
28.9 C (84.0 F)
1975
32.8 C (91.0 F)
1976
30.0 C (86.0 F)
1977
32.0 C (89.6 F)
1978
31.3 C (88.3 F)
1979
30.6 C (87.1 F)
1980
29.2 C (84.6 F)
1981
29.8 C (85.6 F)
1982
28.5 C (83.3 F)
1983
32.4 C (90.3 F)
Coldest night (TNn)
The coldest night of the year at North Bay A, 1939 to 1983. The record is -40.0 C (-40.0 F) in 1942, marked on the chart; the median year is -33.3 C (-27.9 F).
Coldest night (TNn) at North Bay A by year
Year
Coldest night (TNn)
1939
-32.8 C (-27.0 F)
1940
-33.3 C (-27.9 F)
1941
-31.1 C (-24.0 F)
1942
-40.0 C (-40.0 F)
1943
-39.4 C (-38.9 F)
1944
-31.1 C (-24.0 F)
1945
-38.3 C (-36.9 F)
1946
-37.2 C (-35.0 F)
1947
-35.6 C (-32.1 F)
1948
-35.6 C (-32.1 F)
1949
-27.8 C (-18.0 F)
1950
-36.7 C (-34.1 F)
1951
-35.6 C (-32.1 F)
1952
-34.4 C (-29.9 F)
1953
-30.0 C (-22.0 F)
1954
-32.2 C (-26.0 F)
1955
-32.2 C (-26.0 F)
1956
-31.7 C (-25.1 F)
1957
-34.4 C (-29.9 F)
1958
-28.9 C (-20.0 F)
1959
-33.9 C (-29.0 F)
1960
-32.2 C (-26.0 F)
1961
-28.9 C (-20.0 F)
1962
-33.9 C (-29.0 F)
1963
-31.1 C (-24.0 F)
1964
-31.7 C (-25.1 F)
1965
-35.0 C (-31.0 F)
1966
-31.7 C (-25.1 F)
1967
-36.1 C (-33.0 F)
1968
-37.8 C (-36.0 F)
1969
-27.2 C (-17.0 F)
1970
-33.3 C (-27.9 F)
1971
-32.2 C (-26.0 F)
1972
-36.1 C (-33.0 F)
1973
-31.7 C (-25.1 F)
1974
-30.0 C (-22.0 F)
1975
-35.6 C (-32.1 F)
1976
-37.2 C (-35.0 F)
1977
-32.0 C (-25.6 F)
1978
-28.5 C (-19.3 F)
1979
-34.5 C (-30.1 F)
1980
-34.6 C (-30.3 F)
1981
-37.7 C (-35.9 F)
1982
-38.4 C (-37.1 F)
1983
-31.0 C (-23.8 F)
Wettest day (Rx1day)
The wettest day of the year at North Bay A, 1939 to 1983. The record is 96.3 mm (3.8 in) in 1952, marked on the chart; the median year is 47.8 mm (1.9 in).
Wettest day (Rx1day) at North Bay A by year
Year
Wettest day (Rx1day)
1939
73.7 mm (2.9 in)
1940
60.2 mm (2.4 in)
1941
47.8 mm (1.9 in)
1942
45.7 mm (1.8 in)
1943
50.5 mm (2.0 in)
1944
50.0 mm (2.0 in)
1945
35.1 mm (1.4 in)
1946
31.0 mm (1.2 in)
1947
66.8 mm (2.6 in)
1948
59.4 mm (2.3 in)
1949
44.2 mm (1.7 in)
1950
25.1 mm (1.0 in)
1951
37.6 mm (1.5 in)
1952
96.3 mm (3.8 in)
1953
27.9 mm (1.1 in)
1954
39.4 mm (1.6 in)
1955
38.4 mm (1.5 in)
1956
36.6 mm (1.4 in)
1957
63.8 mm (2.5 in)
1958
56.4 mm (2.2 in)
1959
61.5 mm (2.4 in)
1960
46.7 mm (1.8 in)
1961
38.4 mm (1.5 in)
1962
26.4 mm (1.0 in)
1963
40.6 mm (1.6 in)
1964
32.5 mm (1.3 in)
1965
50.8 mm (2.0 in)
1966
34.0 mm (1.3 in)
1967
50.0 mm (2.0 in)
1968
36.8 mm (1.4 in)
1969
49.3 mm (1.9 in)
1970
59.7 mm (2.4 in)
1971
52.1 mm (2.1 in)
1972
63.2 mm (2.5 in)
1973
42.2 mm (1.7 in)
1974
51.6 mm (2.0 in)
1975
49.8 mm (2.0 in)
1976
38.6 mm (1.5 in)
1977
75.1 mm (3.0 in)
1978
56.6 mm (2.2 in)
1979
46.9 mm (1.8 in)
1980
49.4 mm (1.9 in)
1981
44.8 mm (1.8 in)
1982
43.6 mm (1.7 in)
1983
75.2 mm (3.0 in)
Wettest five days (Rx5day)
The wettest five days of the year at North Bay A, 1939 to 1983. The record is 136.9 mm (5.4 in) in 1972, marked on the chart; the median year is 79.1 mm (3.1 in).
Wettest five days (Rx5day) at North Bay A by year
Year
Wettest five days (Rx5day)
1939
82.1 mm (3.2 in)
1940
101.6 mm (4.0 in)
1941
79.1 mm (3.1 in)
1942
63.6 mm (2.5 in)
1943
116.8 mm (4.6 in)
1944
89.2 mm (3.5 in)
1945
48.1 mm (1.9 in)
1946
54.8 mm (2.2 in)
1947
132.9 mm (5.2 in)
1948
124.0 mm (4.9 in)
1949
82.3 mm (3.2 in)
1950
43.7 mm (1.7 in)
1951
78.8 mm (3.1 in)
1952
126.8 mm (5.0 in)
1953
46.8 mm (1.8 in)
1954
86.1 mm (3.4 in)
1955
98.1 mm (3.9 in)
1956
59.2 mm (2.3 in)
1957
113.0 mm (4.4 in)
1958
112.8 mm (4.4 in)
1959
74.5 mm (2.9 in)
1960
61.0 mm (2.4 in)
1961
59.9 mm (2.4 in)
1962
47.4 mm (1.9 in)
1963
81.0 mm (3.2 in)
1964
56.1 mm (2.2 in)
1965
96.1 mm (3.8 in)
1966
56.1 mm (2.2 in)
1967
67.8 mm (2.7 in)
1968
67.8 mm (2.7 in)
1969
66.4 mm (2.6 in)
1970
121.7 mm (4.8 in)
1971
59.0 mm (2.3 in)
1972
136.9 mm (5.4 in)
1973
55.9 mm (2.2 in)
1974
90.5 mm (3.6 in)
1975
83.1 mm (3.3 in)
1976
71.4 mm (2.8 in)
1977
93.1 mm (3.7 in)
1978
71.4 mm (2.8 in)
1979
55.0 mm (2.2 in)
1980
88.4 mm (3.5 in)
1981
88.2 mm (3.5 in)
1982
79.1 mm (3.1 in)
1983
96.4 mm (3.8 in)
Longest dry spell (CDD)
The longest dry spell of the year at North Bay A, 1939 to 1983. The record is 26 days in 1961, marked on the chart; the median year is 14 days.
Longest dry spell (CDD) at North Bay A by year
Year
Longest dry spell (CDD)
1939
18 days
1940
12 days
1941
18 days
1942
15 days
1943
11 days
1944
18 days
1945
23 days
1946
12 days
1947
10 days
1948
22 days
1949
13 days
1950
11 days
1951
11 days
1952
15 days
1953
14 days
1954
9 days
1955
10 days
1956
17 days
1957
15 days
1958
17 days
1959
10 days
1960
14 days
1961
26 days
1962
15 days
1963
14 days
1964
14 days
1965
18 days
1966
17 days
1967
20 days
1968
11 days
1969
14 days
1970
15 days
1971
13 days
1972
13 days
1973
15 days
1974
13 days
1975
13 days
1976
19 days
1977
18 days
1978
18 days
1979
13 days
1980
19 days
1981
12 days
1982
15 days
1983
13 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
45 years with a frost
Across 45 years with a frost, the median last spring frost at North Bay A falls on 18 May and the median first autumn frost on 26 September, which leaves a median of 132 days between them.
Fitted over all years, the growing season changes by +2.6 days per decade at this station.
Frost dates and growing season at North Bay A
Measure
Median, all years
Earliest period
Recent period (1954 to 1983)
Recent against earliest
Fitted trend
Last spring frost
18 May
n/a
18 May
n/a
-1.3 days per decade
First autumn frost
26 September
n/a
26 September
n/a
+1.2 days per decade
Growing days
132 days
n/a
133 days
n/a
+2.6 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
45 years, 1939 to 1983
A day with at least 46.9 mm (1.8 in) of rain is expected about once in 2 years. A day with at least 92.2 mm (3.6 in) of rain is expected about once in 100 years.
Rainfall return levels at North Bay A: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
46.9 mm (1.8 in)
5 years
59.9 mm (2.4 in)
10 years
68.2 mm (2.7 in)
25 years
78.2 mm (3.1 in)
50 years
85.4 mm (3.4 in)
Longer than the 45 years of record
100 years
92.2 mm (3.6 in)
Longer than the 45 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, 45 years of values from 1939 to 1983.
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: 96.3 mm (3.8 in) in 1952; 75.2 mm (3.0 in) in 1983; 75.1 mm (3.0 in) in 1977.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for North Bay A standing records by year: CSV or JSON. Field meanings are on the data page.
Data for North Bay A 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.