Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Hudson 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 Hudson Bay, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
7.8 C (46.0 F)
-45.6 C (-50.1 F)
n/a
n/a
Feb
9.4 C (48.9 F)
-46.7 C (-52.1 F)
n/a
n/a
Mar
15.6 C (60.1 F)
-39.4 C (-38.9 F)
n/a
n/a
Apr
32.2 C (90.0 F)
-30.6 C (-23.1 F)
n/a
n/a
May
34.4 C (93.9 F)
-11.7 C (10.9 F)
n/a
n/a
Jun
36.1 C (97.0 F)
-2.8 C (27.0 F)
n/a
n/a
Jul
36.1 C (97.0 F)
-0.6 C (30.9 F)
n/a
n/a
Aug
36.1 C (97.0 F)
-1.7 C (28.9 F)
n/a
n/a
Sep
35.0 C (95.0 F)
-10.6 C (12.9 F)
n/a
n/a
Oct
31.1 C (88.0 F)
-18.3 C (-0.9 F)
n/a
n/a
Nov
20.0 C (68.0 F)
-38.9 C (-38.0 F)
n/a
n/a
Dec
11.7 C (53.1 F)
-44.4 C (-47.9 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Hudson Bay still stand. 1949 holds the most, with 72.
Standing records at Hudson Bay by the year they were set
Year set
Standing records
1943
30
1944
48
1945
58
1946
61
1947
38
1948
40
1949
72
1950
47
1951
67
1952
37
1953
47
1954
56
1955
47
1956
45
1957
29
1958
40
1959
42
1960
15
1961
47
1962
41
1963
44
1964
53
1965
34
1966
33
1967
48
1968
37
1969
27
1970
30
1971
14
1972
49
1973
34
1974
28
1975
25
1976
24
1977
58
1978
19
Wettest Day of Each Month
Jul: 61.7 mm (2.4 in)
The wettest day on record for each calendar month at Hudson Bay. The most was 61.7 mm (2.4 in) on 27 July 1954.
Record daily precipitation for each month at Hudson Bay
Month
Record daily precipitation (mm)
Date
Jan
13.5 mm (0.5 in)
7 January 1954
Feb
15.0 mm (0.6 in)
16 February 1961
Mar
40.6 mm (1.6 in)
26 March 1956
Apr
23.6 mm (0.9 in)
10 April 1948
May
47.8 mm (1.9 in)
31 May 1968
Jun
57.7 mm (2.3 in)
23 June 1976
Jul
61.7 mm (2.4 in)
27 July 1954
Aug
57.2 mm (2.3 in)
14 August 1974
Sep
41.9 mm (1.6 in)
26 September 1971
Oct
33.0 mm (1.3 in)
18 October 1971
Nov
35.6 mm (1.4 in)
9 November 1948
Dec
15.5 mm (0.6 in)
10 December 1956
Period of Record Coverage
1943 to 1978
Complete yearUnder 90 percent of days
36 years of record at Hudson Bay, 1943 to 1978. 2 years have data for under 90 percent of days and are left out of rankings: 1943, 1978.
Cooler than the station meanWarmer than the station mean
One stripe for each of 34 complete years at Hudson Bay, 1944 to 1977. Blue stripes are years cooler than the station's own mean of 0.1 C (32.2 F); red stripes are warmer. The coolest year was 1950, at -1.9 C (28.6 F), and the warmest was 1977, at 1.6 C (34.8 F). The strongest colour marks a difference of 2.1 C (3.8 F).
Annual mean temperature at Hudson Bay as warming stripes, 1944 to 1977
Year
Annual mean temperature
Difference from the station mean
1944
1.1 C
+1.02 C
1945
-0.6 C
-0.76 C
1946
0.1 C
0.00 C
1947
0.1 C
-0.06 C
1948
0.1 C
-0.01 C
1949
0.3 C
+0.22 C
1950
-1.9 C
-2.01 C
1951
-1.2 C
-1.37 C
1952
1.5 C
+1.36 C
1953
1.4 C
+1.26 C
1954
0.3 C
+0.22 C
1955
-0.4 C
-0.53 C
1956
-0.5 C
-0.64 C
1957
0.1 C
-0.07 C
1958
0.8 C
+0.72 C
1959
0.4 C
+0.27 C
1960
0.3 C
+0.20 C
1961
0.5 C
+0.35 C
1962
0.3 C
+0.16 C
1963
0.8 C
+0.66 C
1964
0.0 C
-0.14 C
1965
-0.8 C
-0.88 C
1966
-1.3 C
-1.39 C
1967
-0.4 C
-0.48 C
1968
0.2 C
+0.05 C
1969
0.2 C
+0.03 C
1970
-0.2 C
-0.37 C
1971
0.3 C
+0.21 C
1972
-1.4 C
-1.50 C
1973
0.9 C
+0.78 C
1974
-0.1 C
-0.23 C
1975
0.4 C
+0.24 C
1976
1.4 C
+1.30 C
1977
1.6 C
+1.46 C
The fitted trend in annual mean temperature here over 1944 to 1977 is 0.1 C (-0.2 to 0.4) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.2 F (-0.4 to 0.7) per decade. The slope is a straight line fitted to 34 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Hudson Bay
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.1 C (-0.2 to 0.4) per decade
0.2 F (-0.4 to 0.7) per decade
1944 to 1977
34
Not clearly different from zero
Mean daily maximum
0.00 C (-0.33 to 0.34) per decade
0.01 F (-0.60 to 0.62) per decade
1944 to 1977
34
Not clearly different from zero
Mean daily minimum
0.2 C (-0.1 to 0.5) per decade
0.3 F (-0.2 to 0.9) per decade
1944 to 1977
34
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
1943 to 1978
Yearly extremes at Hudson Bay: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
36.1 C (97.0 F)
1944
34.4 C (93.9 F)
36
Coldest night (TNn)
-46.7 C (-52.1 F)
1966
-41.1 C (-42.0 F)
36
Wettest day (Rx1day)
61.7 mm (2.4 in)
1954
35.7 mm (1.4 in)
36
Wettest five days (Rx5day)
103.7 mm (4.1 in)
1964
57.1 mm (2.2 in)
36
Longest dry spell (CDD)
47 days
1953
29 days
36
Hottest day (TXx)
The hottest day of the year at Hudson Bay, 1943 to 1978. The record is 36.1 C (97.0 F) in 1944, marked on the chart; the median year is 34.4 C (93.9 F).
Hottest day (TXx) at Hudson Bay by year
Year
Hottest day (TXx)
1943
33.9 C (93.0 F)
1944
36.1 C (97.0 F)
1945
34.4 C (93.9 F)
1946
35.0 C (95.0 F)
1947
33.9 C (93.0 F)
1948
34.4 C (93.9 F)
1949
35.6 C (96.1 F)
1950
34.4 C (93.9 F)
1951
34.4 C (93.9 F)
1952
32.2 C (90.0 F)
1953
32.8 C (91.0 F)
1954
31.7 C (89.1 F)
1955
35.6 C (96.1 F)
1956
35.0 C (95.0 F)
1957
32.2 C (90.0 F)
1958
33.3 C (91.9 F)
1959
31.7 C (89.1 F)
1960
34.4 C (93.9 F)
1961
36.1 C (97.0 F)
1962
33.9 C (93.0 F)
1963
34.4 C (93.9 F)
1964
33.3 C (91.9 F)
1965
30.0 C (86.0 F)
1966
31.1 C (88.0 F)
1967
35.0 C (95.0 F)
1968
30.6 C (87.1 F)
1969
36.1 C (97.0 F)
1970
35.6 C (96.1 F)
1971
34.4 C (93.9 F)
1972
35.0 C (95.0 F)
1973
33.3 C (91.9 F)
1974
32.8 C (91.0 F)
1975
34.4 C (93.9 F)
1976
34.4 C (93.9 F)
1977
31.2 C (88.2 F)
1978
32.0 C (89.6 F)
Coldest night (TNn)
The coldest night of the year at Hudson Bay, 1943 to 1978. The record is -46.7 C (-52.1 F) in 1966, marked on the chart; the median year is -41.1 C (-42.0 F).
Coldest night (TNn) at Hudson Bay by year
Year
Coldest night (TNn)
1943
-31.1 C (-24.0 F)
1944
-38.3 C (-36.9 F)
1945
-41.1 C (-42.0 F)
1946
-43.9 C (-47.0 F)
1947
-41.1 C (-42.0 F)
1948
-41.7 C (-43.1 F)
1949
-42.8 C (-45.0 F)
1950
-45.0 C (-49.0 F)
1951
-40.6 C (-41.1 F)
1952
-41.1 C (-42.0 F)
1953
-38.9 C (-38.0 F)
1954
-42.2 C (-44.0 F)
1955
-43.9 C (-47.0 F)
1956
-40.6 C (-41.1 F)
1957
-44.4 C (-47.9 F)
1958
-38.9 C (-38.0 F)
1959
-45.6 C (-50.1 F)
1960
-36.7 C (-34.1 F)
1961
-41.7 C (-43.1 F)
1962
-42.2 C (-44.0 F)
1963
-39.4 C (-38.9 F)
1964
-37.8 C (-36.0 F)
1965
-40.0 C (-40.0 F)
1966
-46.7 C (-52.1 F)
1967
-45.0 C (-49.0 F)
1968
-44.4 C (-47.9 F)
1969
-43.9 C (-47.0 F)
1970
-40.6 C (-41.1 F)
1971
-41.1 C (-42.0 F)
1972
-41.7 C (-43.1 F)
1973
-42.8 C (-45.0 F)
1974
-44.4 C (-47.9 F)
1975
-36.7 C (-34.1 F)
1976
-38.3 C (-36.9 F)
1977
-39.5 C (-39.1 F)
1978
-37.7 C (-35.9 F)
Wettest day (Rx1day)
The wettest day of the year at Hudson Bay, 1943 to 1978. The record is 61.7 mm (2.4 in) in 1954, marked on the chart; the median year is 35.7 mm (1.4 in).
Wettest day (Rx1day) at Hudson Bay by year
Year
Wettest day (Rx1day)
1943
20.6 mm (0.8 in)
1944
33.3 mm (1.3 in)
1945
17.0 mm (0.7 in)
1946
23.4 mm (0.9 in)
1947
37.8 mm (1.5 in)
1948
35.6 mm (1.4 in)
1949
40.1 mm (1.6 in)
1950
29.5 mm (1.2 in)
1951
37.6 mm (1.5 in)
1952
27.9 mm (1.1 in)
1953
41.7 mm (1.6 in)
1954
61.7 mm (2.4 in)
1955
22.1 mm (0.9 in)
1956
57.2 mm (2.3 in)
1957
16.8 mm (0.7 in)
1958
22.6 mm (0.9 in)
1959
52.1 mm (2.1 in)
1960
27.9 mm (1.1 in)
1961
29.5 mm (1.2 in)
1962
53.1 mm (2.1 in)
1963
24.6 mm (1.0 in)
1964
42.2 mm (1.7 in)
1965
39.6 mm (1.6 in)
1966
49.3 mm (1.9 in)
1967
25.9 mm (1.0 in)
1968
47.8 mm (1.9 in)
1969
35.8 mm (1.4 in)
1970
52.1 mm (2.1 in)
1971
49.5 mm (1.9 in)
1972
34.0 mm (1.3 in)
1973
28.4 mm (1.1 in)
1974
57.2 mm (2.3 in)
1975
29.2 mm (1.1 in)
1976
57.7 mm (2.3 in)
1977
29.4 mm (1.2 in)
1978
58.8 mm (2.3 in)
Wettest five days (Rx5day)
The wettest five days of the year at Hudson Bay, 1943 to 1978. The record is 103.7 mm (4.1 in) in 1964, marked on the chart; the median year is 57.1 mm (2.2 in).
Wettest five days (Rx5day) at Hudson Bay by year
Year
Wettest five days (Rx5day)
1943
23.9 mm (0.9 in)
1944
34.9 mm (1.4 in)
1945
30.5 mm (1.2 in)
1946
32.8 mm (1.3 in)
1947
61.8 mm (2.4 in)
1948
40.8 mm (1.6 in)
1949
59.4 mm (2.3 in)
1950
39.4 mm (1.6 in)
1951
54.8 mm (2.2 in)
1952
61.0 mm (2.4 in)
1953
61.0 mm (2.4 in)
1954
79.5 mm (3.1 in)
1955
38.6 mm (1.5 in)
1956
82.1 mm (3.2 in)
1957
29.8 mm (1.2 in)
1958
47.5 mm (1.9 in)
1959
83.6 mm (3.3 in)
1960
46.7 mm (1.8 in)
1961
32.8 mm (1.3 in)
1962
75.0 mm (3.0 in)
1963
34.6 mm (1.4 in)
1964
103.7 mm (4.1 in)
1965
61.5 mm (2.4 in)
1966
64.3 mm (2.5 in)
1967
64.8 mm (2.6 in)
1968
71.1 mm (2.8 in)
1969
53.3 mm (2.1 in)
1970
65.1 mm (2.6 in)
1971
51.8 mm (2.0 in)
1972
39.5 mm (1.6 in)
1973
42.4 mm (1.7 in)
1974
86.4 mm (3.4 in)
1975
64.8 mm (2.6 in)
1976
71.4 mm (2.8 in)
1977
50.6 mm (2.0 in)
1978
74.6 mm (2.9 in)
Longest dry spell (CDD)
The longest dry spell of the year at Hudson Bay, 1943 to 1978. The record is 47 days in 1953, marked on the chart; the median year is 29 days.
Longest dry spell (CDD) at Hudson Bay by year
Year
Longest dry spell (CDD)
1943
29 days
1944
37 days
1945
23 days
1946
31 days
1947
23 days
1948
19 days
1949
25 days
1950
34 days
1951
33 days
1952
30 days
1953
47 days
1954
29 days
1955
31 days
1956
18 days
1957
19 days
1958
28 days
1959
25 days
1960
23 days
1961
39 days
1962
19 days
1963
22 days
1964
30 days
1965
28 days
1966
26 days
1967
32 days
1968
37 days
1969
34 days
1970
18 days
1971
31 days
1972
32 days
1973
20 days
1974
33 days
1975
25 days
1976
39 days
1977
26 days
1978
45 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
34 years with a frost
Across 34 years with a frost, the median last spring frost at Hudson Bay falls on 2 June and the median first autumn frost on 8 September, which leaves a median of 103 days between them.
Fitted over all years, the growing season changes by +17.4 days per decade at this station.
Frost dates and growing season at Hudson Bay
Measure
Median, all years
Earliest period
Recent period (1948 to 1977)
Recent against earliest
Fitted trend
Last spring frost
2 June
n/a
31 May
n/a
-7.2 days per decade
First autumn frost
8 September
n/a
10 September
n/a
+10.2 days per decade
Growing days
103 days
n/a
104 days
n/a
+17.4 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
33 years, 1944 to 1977
A day with at least 36.6 mm (1.4 in) of rain is expected about once in 2 years. A day with at least 73.0 mm (2.9 in) of rain is expected about once in 100 years.
Rainfall return levels at Hudson 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
36.6 mm (1.4 in)
5 years
48.1 mm (1.9 in)
10 years
55.0 mm (2.2 in)
25 years
62.8 mm (2.5 in)
50 years
68.1 mm (2.7 in)
Longer than the 33 years of record
100 years
73.0 mm (2.9 in)
Longer than the 33 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, 33 years of values from 1944 to 1977.
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: 61.7 mm (2.4 in) in 1954; 57.7 mm (2.3 in) in 1976; 57.2 mm (2.3 in) in 1956.
Download the Data
Data for Hudson Bay standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Hudson 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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.