Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Sept-Iles 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 Sept-Iles A, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
10.0 C (50.0 F)
-43.3 C (-45.9 F)
n/a
n/a
Feb
10.6 C (51.1 F)
-38.3 C (-36.9 F)
n/a
n/a
Mar
11.7 C (53.1 F)
-31.7 C (-25.1 F)
n/a
n/a
Apr
14.4 C (57.9 F)
-24.4 C (-11.9 F)
n/a
n/a
May
28.3 C (82.9 F)
-11.7 C (10.9 F)
n/a
n/a
Jun
32.2 C (90.0 F)
-2.8 C (27.0 F)
n/a
n/a
Jul
32.2 C (90.0 F)
1.7 C (35.1 F)
n/a
n/a
Aug
31.1 C (88.0 F)
-0.6 C (30.9 F)
n/a
n/a
Sep
29.4 C (84.9 F)
-6.5 C (20.3 F)
n/a
n/a
Oct
22.2 C (72.0 F)
-12.8 C (9.0 F)
n/a
n/a
Nov
16.9 C (62.4 F)
-28.9 C (-20.0 F)
n/a
n/a
Dec
9.4 C (48.9 F)
-36.5 C (-33.7 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Sept-Iles A still stand. 1947 holds the most, with 92.
Standing records at Sept-Iles A by the year they were set
Year set
Standing records
1944
14
1945
27
1946
36
1947
92
1948
50
1949
38
1950
72
1951
44
1952
30
1953
45
1954
36
1955
40
1956
43
1957
37
1958
46
1959
38
1960
32
1961
21
1962
27
1963
48
1964
42
1965
39
1966
32
1967
27
1968
35
1969
31
1970
31
1971
20
1972
47
1973
25
1974
29
1975
16
1976
37
1977
26
1978
32
1979
50
1980
29
1981
39
1982
36
1983
25
Wettest Day of Each Month
Nov: 114.6 mm (4.5 in)
The wettest day on record for each calendar month at Sept-Iles A. The most was 114.6 mm (4.5 in) on 3 November 1966.
Record daily precipitation for each month at Sept-Iles A
Month
Record daily precipitation (mm)
Date
Jan
47.0 mm (1.9 in)
9 January 1978
Feb
94.0 mm (3.7 in)
3 February 1968
Mar
50.8 mm (2.0 in)
27 March 1955
Apr
74.9 mm (2.9 in)
29 April 1973
May
69.6 mm (2.7 in)
1 May 1963
Jun
68.1 mm (2.7 in)
14 June 1958
Jul
84.8 mm (3.3 in)
10 July 1945
Aug
76.5 mm (3.0 in)
16 August 1952
Sep
98.6 mm (3.9 in)
4 September 1972
Oct
53.1 mm (2.1 in)
3 October 1952
Nov
114.6 mm (4.5 in)
3 November 1966
Dec
69.8 mm (2.7 in)
3 December 1980
Period of Record Coverage
1944 to 1983
Complete yearUnder 90 percent of days
40 years of record at Sept-Iles A, 1944 to 1983. 1 years have data for under 90 percent of days and are left out of rankings: 1944.
Cooler than the station meanWarmer than the station mean
One stripe for each of 38 complete years at Sept-Iles A, 1945 to 1983. Blue stripes are years cooler than the station's own mean of 1.0 C (33.8 F); red stripes are warmer. The coolest year was 1972, at -1.3 C (29.7 F), and the warmest was 1981, at 2.6 C (36.7 F). The strongest colour marks a difference of 2.3 C (4.1 F).
Annual mean temperature at Sept-Iles A as warming stripes, 1945 to 1983
Year
Annual mean temperature
Difference from the station mean
1945
1.0 C
-0.04 C
1946
-0.1 C
-1.09 C
1947
1.1 C
+0.07 C
1948
0.4 C
-0.58 C
1949
0.8 C
-0.17 C
1950
0.2 C
-0.81 C
1951
1.4 C
+0.40 C
1952
2.0 C
+1.04 C
1953
1.9 C
+0.93 C
1954
1.0 C
+0.01 C
1955
2.5 C
+1.55 C
1956
0.6 C
-0.43 C
1957
0.9 C
-0.13 C
1958
1.5 C
+0.48 C
1959
1.0 C
+0.02 C
1960
2.2 C
+1.16 C
1961
1.7 C
+0.68 C
1962
1.0 C
-0.03 C
1963
0.5 C
-0.45 C
1964
0.7 C
-0.34 C
1965
0.3 C
-0.67 C
1966
2.4 C
+1.41 C
1967
0.8 C
-0.19 C
1968
1.2 C
+0.24 C
1969
2.0 C
+1.05 C
1970
0.8 C
-0.16 C
1971
0.8 C
-0.18 C
1972
-1.3 C
-2.26 C
1973
1.4 C
+0.38 C
1974
-0.3 C
-1.32 C
1975
0.6 C
-0.43 C
1976
0.1 C
-0.86 C
1977
1.7 C
+0.68 C
1978
0.5 C
-0.51 C
1980
1.0 C
-0.03 C
1981
2.6 C
+1.61 C
1982
-0.2 C
-1.21 C
1983
1.4 C
+0.36 C
The fitted trend in annual mean temperature here over 1945 to 1983 is -0.1 C (-0.3 to 0.2) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.1 F (-0.6 to 0.3) per decade. The slope is a straight line fitted to 38 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Sept-Iles A
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.1 C (-0.3 to 0.2) per decade
-0.1 F (-0.6 to 0.3) per decade
1945 to 1983
38
Not clearly different from zero
Mean daily maximum
-0.24 C (-0.45 to -0.02) per decade
-0.43 F (-0.81 to -0.04) per decade
1945 to 1983
38
Fall
Mean daily minimum
0.1 C (-0.2 to 0.4) per decade
0.2 F (-0.3 to 0.7) per decade
1945 to 1983
38
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
1944 to 1983
Yearly extremes at Sept-Iles A: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
32.2 C (90.0 F)
1947
28.3 C (82.9 F)
40
Coldest night (TNn)
-43.3 C (-45.9 F)
1950
-34.4 C (-29.9 F)
40
Wettest day (Rx1day)
114.6 mm (4.5 in)
1966
49.5 mm (1.9 in)
40
Wettest five days (Rx5day)
138.4 mm (5.4 in)
1950
88.4 mm (3.5 in)
40
Longest dry spell (CDD)
35 days
1958
14 days
40
Hottest day (TXx)
The hottest day of the year at Sept-Iles A, 1944 to 1983. The record is 32.2 C (90.0 F) in 1947, marked on the chart; the median year is 28.3 C (82.9 F).
Hottest day (TXx) at Sept-Iles A by year
Year
Hottest day (TXx)
1944
26.1 C (79.0 F)
1945
27.2 C (81.0 F)
1946
29.4 C (84.9 F)
1947
32.2 C (90.0 F)
1948
27.8 C (82.0 F)
1949
30.6 C (87.1 F)
1950
26.7 C (80.1 F)
1951
26.7 C (80.1 F)
1952
28.9 C (84.0 F)
1953
28.3 C (82.9 F)
1954
27.2 C (81.0 F)
1955
32.2 C (90.0 F)
1956
25.0 C (77.0 F)
1957
25.0 C (77.0 F)
1958
26.7 C (80.1 F)
1959
29.4 C (84.9 F)
1960
26.7 C (80.1 F)
1961
26.7 C (80.1 F)
1962
28.3 C (82.9 F)
1963
31.1 C (88.0 F)
1964
26.7 C (80.1 F)
1965
31.1 C (88.0 F)
1966
27.8 C (82.0 F)
1967
27.8 C (82.0 F)
1968
29.4 C (84.9 F)
1969
27.2 C (81.0 F)
1970
28.9 C (84.0 F)
1971
25.0 C (77.0 F)
1972
29.4 C (84.9 F)
1973
29.4 C (84.9 F)
1974
25.0 C (77.0 F)
1975
28.3 C (82.9 F)
1976
30.6 C (87.1 F)
1977
26.2 C (79.2 F)
1978
29.2 C (84.6 F)
1979
29.0 C (84.2 F)
1980
29.2 C (84.6 F)
1981
31.5 C (88.7 F)
1982
28.2 C (82.8 F)
1983
28.7 C (83.7 F)
Coldest night (TNn)
The coldest night of the year at Sept-Iles A, 1944 to 1983. The record is -43.3 C (-45.9 F) in 1950, marked on the chart; the median year is -34.4 C (-29.9 F).
Coldest night (TNn) at Sept-Iles A by year
Year
Coldest night (TNn)
1944
-36.1 C (-33.0 F)
1945
-37.2 C (-35.0 F)
1946
-37.2 C (-35.0 F)
1947
-38.3 C (-36.9 F)
1948
-38.3 C (-36.9 F)
1949
-36.7 C (-34.1 F)
1950
-43.3 C (-45.9 F)
1951
-34.4 C (-29.9 F)
1952
-33.9 C (-29.0 F)
1953
-33.3 C (-27.9 F)
1954
-37.2 C (-35.0 F)
1955
-31.7 C (-25.1 F)
1956
-27.8 C (-18.0 F)
1957
-40.0 C (-40.0 F)
1958
-35.0 C (-31.0 F)
1959
-35.6 C (-32.1 F)
1960
-31.7 C (-25.1 F)
1961
-34.4 C (-29.9 F)
1962
-35.0 C (-31.0 F)
1963
-36.7 C (-34.1 F)
1964
-35.0 C (-31.0 F)
1965
-32.8 C (-27.0 F)
1966
-33.3 C (-27.9 F)
1967
-31.1 C (-24.0 F)
1968
-33.3 C (-27.9 F)
1969
-30.6 C (-23.1 F)
1970
-35.0 C (-31.0 F)
1971
-33.9 C (-29.0 F)
1972
-35.6 C (-32.1 F)
1973
-32.8 C (-27.0 F)
1974
-37.2 C (-35.0 F)
1975
-37.8 C (-36.0 F)
1976
-30.6 C (-23.1 F)
1977
-33.8 C (-28.8 F)
1978
-33.2 C (-27.8 F)
1979
-33.1 C (-27.6 F)
1980
-31.6 C (-24.9 F)
1981
-28.5 C (-19.3 F)
1982
-36.5 C (-33.7 F)
1983
-31.5 C (-24.7 F)
Wettest day (Rx1day)
The wettest day of the year at Sept-Iles A, 1944 to 1983. The record is 114.6 mm (4.5 in) in 1966, marked on the chart; the median year is 49.5 mm (1.9 in).
Wettest day (Rx1day) at Sept-Iles A by year
Year
Wettest day (Rx1day)
1944
29.2 mm (1.1 in)
1945
84.8 mm (3.3 in)
1946
45.7 mm (1.8 in)
1947
43.7 mm (1.7 in)
1948
49.0 mm (1.9 in)
1949
44.2 mm (1.7 in)
1950
56.9 mm (2.2 in)
1951
39.4 mm (1.6 in)
1952
76.5 mm (3.0 in)
1953
96.3 mm (3.8 in)
1954
36.1 mm (1.4 in)
1955
50.8 mm (2.0 in)
1956
44.7 mm (1.8 in)
1957
29.7 mm (1.2 in)
1958
68.1 mm (2.7 in)
1959
62.0 mm (2.4 in)
1960
40.9 mm (1.6 in)
1961
42.7 mm (1.7 in)
1962
34.5 mm (1.4 in)
1963
69.6 mm (2.7 in)
1964
48.3 mm (1.9 in)
1965
39.9 mm (1.6 in)
1966
114.6 mm (4.5 in)
1967
93.2 mm (3.7 in)
1968
94.0 mm (3.7 in)
1969
67.8 mm (2.7 in)
1970
74.9 mm (2.9 in)
1971
55.9 mm (2.2 in)
1972
98.6 mm (3.9 in)
1973
74.9 mm (2.9 in)
1974
59.2 mm (2.3 in)
1975
51.1 mm (2.0 in)
1976
39.6 mm (1.6 in)
1977
45.8 mm (1.8 in)
1978
47.0 mm (1.9 in)
1979
48.0 mm (1.9 in)
1980
69.8 mm (2.7 in)
1981
45.5 mm (1.8 in)
1982
45.7 mm (1.8 in)
1983
50.0 mm (2.0 in)
Wettest five days (Rx5day)
The wettest five days of the year at Sept-Iles A, 1944 to 1983. The record is 138.4 mm (5.4 in) in 1950, marked on the chart; the median year is 88.4 mm (3.5 in).
Wettest five days (Rx5day) at Sept-Iles A by year
Year
Wettest five days (Rx5day)
1944
55.6 mm (2.2 in)
1945
96.5 mm (3.8 in)
1946
74.9 mm (2.9 in)
1947
78.8 mm (3.1 in)
1948
107.1 mm (4.2 in)
1949
65.3 mm (2.6 in)
1950
138.4 mm (5.4 in)
1951
79.2 mm (3.1 in)
1952
92.7 mm (3.6 in)
1953
138.4 mm (5.4 in)
1954
63.1 mm (2.5 in)
1955
110.3 mm (4.3 in)
1956
85.4 mm (3.4 in)
1957
64.5 mm (2.5 in)
1958
100.4 mm (4.0 in)
1959
123.0 mm (4.8 in)
1960
96.9 mm (3.8 in)
1961
59.1 mm (2.3 in)
1962
60.7 mm (2.4 in)
1963
111.5 mm (4.4 in)
1964
91.2 mm (3.6 in)
1965
75.5 mm (3.0 in)
1966
127.6 mm (5.0 in)
1967
118.3 mm (4.7 in)
1968
118.4 mm (4.7 in)
1969
97.5 mm (3.8 in)
1970
126.5 mm (5.0 in)
1971
77.2 mm (3.0 in)
1972
120.7 mm (4.8 in)
1973
132.1 mm (5.2 in)
1974
82.4 mm (3.2 in)
1975
70.2 mm (2.8 in)
1976
80.1 mm (3.2 in)
1977
69.8 mm (2.7 in)
1978
59.6 mm (2.3 in)
1979
126.6 mm (5.0 in)
1980
117.2 mm (4.6 in)
1981
85.6 mm (3.4 in)
1982
81.4 mm (3.2 in)
1983
73.3 mm (2.9 in)
Longest dry spell (CDD)
The longest dry spell of the year at Sept-Iles A, 1944 to 1983. The record is 35 days in 1958, marked on the chart; the median year is 14 days.
Longest dry spell (CDD) at Sept-Iles A by year
Year
Longest dry spell (CDD)
1944
11 days
1945
14 days
1946
16 days
1947
16 days
1948
14 days
1949
15 days
1950
17 days
1951
15 days
1952
11 days
1953
16 days
1954
15 days
1955
14 days
1956
18 days
1957
18 days
1958
35 days
1959
16 days
1960
16 days
1961
33 days
1962
22 days
1963
14 days
1964
22 days
1965
19 days
1966
14 days
1967
13 days
1968
12 days
1969
14 days
1970
12 days
1971
12 days
1972
10 days
1973
12 days
1974
13 days
1975
15 days
1976
16 days
1977
14 days
1978
10 days
1979
13 days
1980
14 days
1981
15 days
1982
12 days
1983
10 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
38 years with a frost
Across 38 years with a frost, the median last spring frost at Sept-Iles A falls on 28 May and the median first autumn frost on 17 September, which leaves a median of 113 days between them.
Fitted over all years, the growing season changes by +5.0 days per decade at this station.
Frost dates and growing season at Sept-Iles A
Measure
Median, all years
Earliest period
Recent period (1953 to 1983)
Recent against earliest
Fitted trend
Last spring frost
28 May
n/a
27 May
n/a
-2.5 days per decade
First autumn frost
17 September
n/a
20 September
n/a
+2.6 days per decade
Growing days
113 days
n/a
116 days
n/a
+5.0 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
39 years, 1945 to 1983
A day with at least 53.3 mm (2.1 in) of rain is expected about once in 2 years. A day with at least 139.3 mm (5.5 in) of rain is expected about once in 100 years.
Rainfall return levels at Sept-Iles 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
53.3 mm (2.1 in)
5 years
71.4 mm (2.8 in)
10 years
85.2 mm (3.4 in)
25 years
104.8 mm (4.1 in)
50 years
121.3 mm (4.8 in)
Longer than the 39 years of record
100 years
139.3 mm (5.5 in)
Longer than the 39 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, 39 years of values from 1945 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: 114.6 mm (4.5 in) in 1966; 98.6 mm (3.9 in) in 1972; 96.3 mm (3.8 in) in 1953.
Download the Data
Data for Sept-Iles A standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Sept-Iles 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.