Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Churchill 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 Churchill A, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
1.7 C (35.1 F)
-45.0 C (-49.0 F)
n/a
n/a
Feb
1.1 C (34.0 F)
-45.4 C (-49.7 F)
n/a
n/a
Mar
5.6 C (42.1 F)
-43.9 C (-47.0 F)
n/a
n/a
Apr
28.2 C (82.8 F)
-33.3 C (-27.9 F)
n/a
n/a
May
27.2 C (81.0 F)
-25.2 C (-13.4 F)
n/a
n/a
Jun
31.1 C (88.0 F)
-9.4 C (15.1 F)
n/a
n/a
Jul
33.9 C (93.0 F)
-2.2 C (28.0 F)
n/a
n/a
Aug
32.8 C (91.0 F)
-2.2 C (28.0 F)
n/a
n/a
Sep
27.8 C (82.0 F)
-11.7 C (10.9 F)
n/a
n/a
Oct
20.6 C (69.1 F)
-24.4 C (-11.9 F)
n/a
n/a
Nov
7.2 C (45.0 F)
-36.1 C (-33.0 F)
n/a
n/a
Dec
2.2 C (36.0 F)
-41.8 C (-43.2 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Churchill A still stand. 1972 holds the most, with 72.
Standing records at Churchill A by the year they were set
Year set
Standing records
1943
41
1944
25
1945
62
1946
43
1947
47
1948
47
1949
22
1950
42
1951
28
1952
30
1953
32
1954
23
1955
51
1956
33
1957
25
1958
26
1959
23
1960
35
1961
50
1962
22
1963
30
1964
22
1965
31
1966
41
1967
32
1968
28
1969
28
1970
23
1971
25
1972
72
1973
32
1974
42
1975
33
1976
40
1977
39
1978
27
1979
55
1980
30
1981
57
1982
32
1983
38
All-Time Record Progression
6 new records
6 all-time records were set at Churchill A between 1 February 1974 and 3 September 1983. Each dot is a new record.
When Churchill A set new all-time records
Date
Kind
Detail
1974-02-01
Record low maximum temperature
Record low maximum temperature -39.4 C (-38.9 F)
1975-07-04
Record high maximum temperature
Record high maximum temperature 33.9 C (93.0 F)
1978-05-17
Record daily precipitation
Record daily precipitation 55.6 mm (2.2 in)
1978-05-17
Record daily snowfall
Record daily snowfall 47.6 cm (18.7 in)
1979-02-13
Record low minimum temperature
Record low minimum temperature -45.4 C (-49.7 F)
1983-09-03
Record daily precipitation
Record daily precipitation 62.3 mm (2.5 in)
Wettest Day of Each Month
Sep: 62.3 mm (2.5 in)
The wettest day on record for each calendar month at Churchill A. The most was 62.3 mm (2.5 in) on 3 September 1983.
Record daily precipitation for each month at Churchill A
Month
Record daily precipitation (mm)
Date
Jan
14.4 mm (0.6 in)
27 January 1982
Feb
16.5 mm (0.6 in)
21 February 1981
Mar
21.9 mm (0.9 in)
14 March 1977
Apr
25.4 mm (1.0 in)
22 April 1961
May
55.6 mm (2.2 in)
17 May 1978
Jun
36.4 mm (1.4 in)
23 June 1982
Jul
52.3 mm (2.1 in)
30 July 1948
Aug
51.1 mm (2.0 in)
4 August 1947
Sep
62.3 mm (2.5 in)
3 September 1983
Oct
35.8 mm (1.4 in)
7 October 1970
Nov
35.1 mm (1.4 in)
3 November 1961
Dec
21.8 mm (0.9 in)
12 December 1948
Period of Record Coverage
1943 to 1983
Complete yearUnder 90 percent of days
41 years of record at Churchill A, 1943 to 1983. 1 years have data for under 90 percent of days and are left out of rankings: 1945.
Cooler than the station meanWarmer than the station mean
One stripe for each of 39 complete years at Churchill A, 1943 to 1983. Blue stripes are years cooler than the station's own mean of -7.2 C (19.1 F); red stripes are warmer. The coolest year was 1972, at -9.8 C (14.4 F), and the warmest was 1981, at -4.9 C (23.2 F). The strongest colour marks a difference of 2.7 C (4.9 F).
Annual mean temperature at Churchill A as warming stripes, 1943 to 1983
Year
Annual mean temperature
Difference from the station mean
1943
-7.5 C
-0.35 C
1944
-6.1 C
+1.09 C
1947
-6.8 C
+0.41 C
1948
-6.2 C
+1.01 C
1949
-7.8 C
-0.67 C
1950
-9.1 C
-1.90 C
1951
-7.4 C
-0.21 C
1952
-6.3 C
+0.87 C
1953
-6.3 C
+0.85 C
1954
-6.5 C
+0.68 C
1955
-6.7 C
+0.44 C
1956
-7.7 C
-0.53 C
1957
-7.5 C
-0.35 C
1958
-6.9 C
+0.29 C
1959
-7.6 C
-0.47 C
1960
-7.2 C
-0.01 C
1961
-7.4 C
-0.27 C
1962
-8.1 C
-0.97 C
1963
-7.4 C
-0.20 C
1964
-7.7 C
-0.49 C
1965
-7.8 C
-0.62 C
1966
-7.4 C
-0.24 C
1967
-7.1 C
+0.04 C
1968
-6.7 C
+0.47 C
1969
-6.5 C
+0.65 C
1970
-7.5 C
-0.34 C
1971
-6.2 C
+0.94 C
1972
-9.8 C
-2.62 C
1973
-6.1 C
+1.03 C
1974
-8.6 C
-1.44 C
1975
-6.8 C
+0.40 C
1976
-6.8 C
+0.34 C
1977
-5.1 C
+2.04 C
1978
-7.7 C
-0.54 C
1979
-8.0 C
-0.82 C
1980
-6.9 C
+0.32 C
1981
-4.9 C
+2.30 C
1982
-8.4 C
-1.25 C
1983
-7.0 C
+0.13 C
The fitted trend in annual mean temperature here over 1943 to 1983 is 0.01 C (-0.27 to 0.28) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.01 F (-0.49 to 0.51) per decade. The slope is a straight line fitted to 39 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Churchill A
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.01 C (-0.27 to 0.28) per decade
0.01 F (-0.49 to 0.51) per decade
1943 to 1983
39
Not clearly different from zero
Mean daily maximum
0.1 C (-0.2 to 0.3) per decade
0.1 F (-0.4 to 0.6) per decade
1943 to 1983
39
Not clearly different from zero
Mean daily minimum
-0.04 C (-0.33 to 0.24) per decade
-0.1 F (-0.6 to 0.4) per decade
1943 to 1983
39
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 1983
Yearly extremes at Churchill 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)
1975
30.5 C (86.9 F)
41
Coldest night (TNn)
-45.4 C (-49.7 F)
1979
-41.1 C (-42.0 F)
41
Wettest day (Rx1day)
62.3 mm (2.5 in)
1983
28.2 mm (1.1 in)
41
Wettest five days (Rx5day)
76.0 mm (3.0 in)
1948
44.4 mm (1.7 in)
41
Longest dry spell (CDD)
67 days
1963
26 days
41
Hottest day (TXx)
The hottest day of the year at Churchill A, 1943 to 1983. The record is 33.9 C (93.0 F) in 1975, marked on the chart; the median year is 30.5 C (86.9 F).
Hottest day (TXx) at Churchill A by year
Year
Hottest day (TXx)
1943
30.6 C (87.1 F)
1944
30.6 C (87.1 F)
1945
32.2 C (90.0 F)
1946
32.8 C (91.0 F)
1947
28.9 C (84.0 F)
1948
30.6 C (87.1 F)
1949
26.7 C (80.1 F)
1950
29.4 C (84.9 F)
1951
29.4 C (84.9 F)
1952
28.9 C (84.0 F)
1953
31.1 C (88.0 F)
1954
32.2 C (90.0 F)
1955
31.1 C (88.0 F)
1956
32.8 C (91.0 F)
1957
30.0 C (86.0 F)
1958
27.2 C (81.0 F)
1959
28.9 C (84.0 F)
1960
27.2 C (81.0 F)
1961
31.1 C (88.0 F)
1962
30.0 C (86.0 F)
1963
27.8 C (82.0 F)
1964
31.7 C (89.1 F)
1965
27.8 C (82.0 F)
1966
29.4 C (84.9 F)
1967
30.6 C (87.1 F)
1968
27.2 C (81.0 F)
1969
28.9 C (84.0 F)
1970
32.2 C (90.0 F)
1971
30.0 C (86.0 F)
1972
30.6 C (87.1 F)
1973
32.2 C (90.0 F)
1974
31.1 C (88.0 F)
1975
33.9 C (93.0 F)
1976
32.8 C (91.0 F)
1977
25.5 C (77.9 F)
1978
25.0 C (77.0 F)
1979
33.8 C (92.8 F)
1980
28.2 C (82.8 F)
1981
30.5 C (86.9 F)
1982
29.0 C (84.2 F)
1983
31.3 C (88.3 F)
Coldest night (TNn)
The coldest night of the year at Churchill A, 1943 to 1983. The record is -45.4 C (-49.7 F) in 1979, marked on the chart; the median year is -41.1 C (-42.0 F).
Coldest night (TNn) at Churchill A by year
Year
Coldest night (TNn)
1943
-45.0 C (-49.0 F)
1944
-37.8 C (-36.0 F)
1945
-38.3 C (-36.9 F)
1946
-42.2 C (-44.0 F)
1947
-39.4 C (-38.9 F)
1948
-41.1 C (-42.0 F)
1949
-40.6 C (-41.1 F)
1950
-43.3 C (-45.9 F)
1951
-40.6 C (-41.1 F)
1952
-40.6 C (-41.1 F)
1953
-41.1 C (-42.0 F)
1954
-43.9 C (-47.0 F)
1955
-45.0 C (-49.0 F)
1956
-41.7 C (-43.1 F)
1957
-41.1 C (-42.0 F)
1958
-38.9 C (-38.0 F)
1959
-42.8 C (-45.0 F)
1960
-41.1 C (-42.0 F)
1961
-40.6 C (-41.1 F)
1962
-45.0 C (-49.0 F)
1963
-42.2 C (-44.0 F)
1964
-38.3 C (-36.9 F)
1965
-39.4 C (-38.9 F)
1966
-43.3 C (-45.9 F)
1967
-42.2 C (-44.0 F)
1968
-43.3 C (-45.9 F)
1969
-38.9 C (-38.0 F)
1970
-40.6 C (-41.1 F)
1971
-38.3 C (-36.9 F)
1972
-44.4 C (-47.9 F)
1973
-39.4 C (-38.9 F)
1974
-43.9 C (-47.0 F)
1975
-42.2 C (-44.0 F)
1976
-38.9 C (-38.0 F)
1977
-40.4 C (-40.7 F)
1978
-41.5 C (-42.7 F)
1979
-45.4 C (-49.7 F)
1980
-38.6 C (-37.5 F)
1981
-41.8 C (-43.2 F)
1982
-44.8 C (-48.6 F)
1983
-40.2 C (-40.4 F)
Wettest day (Rx1day)
The wettest day of the year at Churchill A, 1943 to 1983. The record is 62.3 mm (2.5 in) in 1983, marked on the chart; the median year is 28.2 mm (1.1 in).
Wettest day (Rx1day) at Churchill A by year
Year
Wettest day (Rx1day)
1943
23.4 mm (0.9 in)
1944
20.3 mm (0.8 in)
1945
22.4 mm (0.9 in)
1946
36.6 mm (1.4 in)
1947
51.1 mm (2.0 in)
1948
52.3 mm (2.1 in)
1949
28.2 mm (1.1 in)
1950
19.1 mm (0.8 in)
1951
35.6 mm (1.4 in)
1952
21.1 mm (0.8 in)
1953
35.1 mm (1.4 in)
1954
17.3 mm (0.7 in)
1955
30.2 mm (1.2 in)
1956
27.2 mm (1.1 in)
1957
22.9 mm (0.9 in)
1958
29.5 mm (1.2 in)
1959
42.2 mm (1.7 in)
1960
32.5 mm (1.3 in)
1961
35.1 mm (1.4 in)
1962
28.2 mm (1.1 in)
1963
26.4 mm (1.0 in)
1964
26.4 mm (1.0 in)
1965
16.0 mm (0.6 in)
1966
24.4 mm (1.0 in)
1967
38.4 mm (1.5 in)
1968
17.0 mm (0.7 in)
1969
33.5 mm (1.3 in)
1970
35.8 mm (1.4 in)
1971
24.4 mm (1.0 in)
1972
29.7 mm (1.2 in)
1973
33.0 mm (1.3 in)
1974
16.5 mm (0.6 in)
1975
16.8 mm (0.7 in)
1976
18.8 mm (0.7 in)
1977
25.8 mm (1.0 in)
1978
55.6 mm (2.2 in)
1979
20.2 mm (0.8 in)
1980
39.0 mm (1.5 in)
1981
23.5 mm (0.9 in)
1982
36.4 mm (1.4 in)
1983
62.3 mm (2.5 in)
Wettest five days (Rx5day)
The wettest five days of the year at Churchill A, 1943 to 1983. The record is 76.0 mm (3.0 in) in 1948, marked on the chart; the median year is 44.4 mm (1.7 in).
Wettest five days (Rx5day) at Churchill A by year
Year
Wettest five days (Rx5day)
1943
43.8 mm (1.7 in)
1944
41.1 mm (1.6 in)
1945
39.2 mm (1.5 in)
1946
46.7 mm (1.8 in)
1947
63.6 mm (2.5 in)
1948
76.0 mm (3.0 in)
1949
57.9 mm (2.3 in)
1950
40.9 mm (1.6 in)
1951
47.0 mm (1.9 in)
1952
38.9 mm (1.5 in)
1953
46.3 mm (1.8 in)
1954
31.5 mm (1.2 in)
1955
58.2 mm (2.3 in)
1956
45.5 mm (1.8 in)
1957
32.8 mm (1.3 in)
1958
39.7 mm (1.6 in)
1959
63.5 mm (2.5 in)
1960
71.1 mm (2.8 in)
1961
62.8 mm (2.5 in)
1962
45.7 mm (1.8 in)
1963
40.2 mm (1.6 in)
1964
46.5 mm (1.8 in)
1965
38.9 mm (1.5 in)
1966
32.3 mm (1.3 in)
1967
60.0 mm (2.4 in)
1968
26.5 mm (1.0 in)
1969
43.7 mm (1.7 in)
1970
61.5 mm (2.4 in)
1971
41.6 mm (1.6 in)
1972
41.0 mm (1.6 in)
1973
65.3 mm (2.6 in)
1974
44.4 mm (1.7 in)
1975
34.5 mm (1.4 in)
1976
30.0 mm (1.2 in)
1977
37.2 mm (1.5 in)
1978
64.4 mm (2.5 in)
1979
34.0 mm (1.3 in)
1980
46.4 mm (1.8 in)
1981
39.2 mm (1.5 in)
1982
54.9 mm (2.2 in)
1983
74.3 mm (2.9 in)
Longest dry spell (CDD)
The longest dry spell of the year at Churchill A, 1943 to 1983. The record is 67 days in 1963, marked on the chart; the median year is 26 days.
Longest dry spell (CDD) at Churchill A by year
Year
Longest dry spell (CDD)
1943
47 days
1944
65 days
1945
23 days
1946
19 days
1947
31 days
1948
46 days
1949
41 days
1950
38 days
1951
19 days
1952
45 days
1953
16 days
1954
24 days
1955
25 days
1956
35 days
1957
35 days
1958
26 days
1959
20 days
1960
12 days
1961
28 days
1962
21 days
1963
67 days
1964
40 days
1965
25 days
1966
22 days
1967
24 days
1968
22 days
1969
39 days
1970
29 days
1971
37 days
1972
40 days
1973
27 days
1974
26 days
1975
17 days
1976
20 days
1977
25 days
1978
25 days
1979
61 days
1980
18 days
1981
27 days
1982
34 days
1983
20 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
39 years with a frost
Across 39 years with a frost, the median last spring frost at Churchill A falls on 23 June and the median first autumn frost on 10 September, which leaves a median of 80 days between them.
Fitted over all years, the growing season changes by -3.0 days per decade at this station.
Frost dates and growing season at Churchill A
Measure
Median, all years
Earliest period
Recent period (1954 to 1983)
Recent against earliest
Fitted trend
Last spring frost
23 June
n/a
23 June
n/a
+0.7 days per decade
First autumn frost
10 September
n/a
8 September
n/a
-2.3 days per decade
Growing days
80 days
n/a
75 days
n/a
-3.0 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
40 years, 1943 to 1983
A day with at least 28.0 mm (1.1 in) of rain is expected about once in 2 years. A day with at least 68.2 mm (2.7 in) of rain is expected about once in 100 years.
Rainfall return levels at Churchill 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
28.0 mm (1.1 in)
5 years
38.0 mm (1.5 in)
10 years
44.9 mm (1.8 in)
25 years
54.0 mm (2.1 in)
50 years
61.0 mm (2.4 in)
Longer than the 40 years of record
100 years
68.2 mm (2.7 in)
Longer than the 40 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, 40 years of values from 1943 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: 62.3 mm (2.5 in) in 1983; 55.6 mm (2.2 in) in 1978; 52.3 mm (2.1 in) in 1948.
Download the Data
Data for Churchill A standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Churchill 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.