Record envelope, standing records and threshold days for Fort Reliance (CA002201900), Northwest Territories, Canada, with 45 years of record.
Key Facts for Fort Reliance
Fort Reliance (CA002201900) is a weather station in Northwest Territories, Canada at 62.72 latitude and -109.17 longitude, 166 m (545 ft) above sea level.
The station reports from 1948 to 1992, 45 years of record.
1,464 records set at Fort Reliance still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
Fort Reliance tied a daily record high minimum temperature of -10.7 C (12.7 F) on 24 November 1983.
Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Fort Reliance. 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 Fort Reliance, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
2.1 C (35.8 F)
-51.2 C (-60.2 F)
n/a
n/a
Feb
6.1 C (43.0 F)
-51.2 C (-60.2 F)
n/a
n/a
Mar
8.6 C (47.5 F)
-50.0 C (-58.0 F)
n/a
n/a
Apr
16.1 C (61.0 F)
-41.1 C (-42.0 F)
n/a
n/a
May
26.1 C (79.0 F)
-31.1 C (-24.0 F)
n/a
n/a
Jun
29.4 C (84.9 F)
-7.2 C (19.0 F)
n/a
n/a
Jul
32.2 C (90.0 F)
-1.1 C (30.0 F)
n/a
n/a
Aug
30.0 C (86.0 F)
0.3 C (32.5 F)
n/a
n/a
Sep
27.2 C (81.0 F)
-7.8 C (18.0 F)
n/a
n/a
Oct
17.8 C (64.0 F)
-23.3 C (-9.9 F)
n/a
n/a
Nov
6.7 C (44.1 F)
-43.3 C (-45.9 F)
n/a
n/a
Dec
2.2 C (36.0 F)
-45.6 C (-50.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Fort Reliance still stand. 1951 holds the most, with 69.
Standing records at Fort Reliance by the year they were set
Year set
Standing records
1948
14
1949
23
1950
61
1951
69
1952
45
1953
46
1954
39
1955
48
1956
51
1957
52
1958
40
1959
64
1960
27
1961
56
1962
27
1963
43
1964
40
1965
33
1966
65
1967
44
1968
35
1969
37
1970
32
1971
44
1972
42
1973
44
1974
30
1975
30
1976
23
1977
48
1978
32
1979
45
1980
30
1981
61
1982
22
1983
22
Wettest Day of Each Month
Jul: 39.9 mm (1.6 in)
The wettest day on record for each calendar month at Fort Reliance. The most was 39.9 mm (1.6 in) on 10 July 1963.
Record daily precipitation for each month at Fort Reliance
Month
Record daily precipitation (mm)
Date
Jan
7.9 mm (0.31 in)
4 January 1949
Feb
10.7 mm (0.4 in)
28 February 1967
Mar
19.8 mm (0.8 in)
27 March 1968
Apr
16.8 mm (0.7 in)
28 April 1964
May
30.4 mm (1.2 in)
27 May 1979
Jun
38.1 mm (1.5 in)
15 June 1959
Jul
39.9 mm (1.6 in)
10 July 1963
Aug
34.3 mm (1.4 in)
26 August 1951
Sep
21.7 mm (0.9 in)
11 September 1982
Oct
28.4 mm (1.1 in)
5 October 1966
Nov
16.8 mm (0.7 in)
4 November 1976
Dec
12.4 mm (0.5 in)
14 December 1952
Period of Record Coverage
1948 to 1983
Complete yearUnder 90 percent of days
36 years of record at Fort Reliance, 1948 to 1983. 2 years have data for under 90 percent of days and are left out of rankings: 1948, 1958.
Cooler than the station meanWarmer than the station mean
One stripe for each of 33 complete years at Fort Reliance, 1949 to 1983. Blue stripes are years cooler than the station's own mean of -7.0 C (19.5 F); red stripes are warmer. The coolest year was 1950, at -9.2 C (15.4 F), and the warmest was 1981, at -4.1 C (24.7 F). The strongest colour marks a difference of 2.9 C (5.2 F).
Annual mean temperature at Fort Reliance as warming stripes, 1949 to 1983
Year
Annual mean temperature
Difference from the station mean
1949
-7.0 C
-0.10 C
1950
-9.2 C
-2.30 C
1952
-5.6 C
+1.30 C
1953
-5.5 C
+1.44 C
1954
-5.9 C
+1.02 C
1955
-7.0 C
-0.01 C
1956
-8.1 C
-1.18 C
1957
-8.3 C
-1.40 C
1959
-8.1 C
-1.19 C
1960
-7.2 C
-0.23 C
1961
-8.0 C
-1.02 C
1962
-8.3 C
-1.32 C
1963
-6.5 C
+0.41 C
1964
-7.6 C
-0.68 C
1965
-7.6 C
-0.67 C
1966
-8.0 C
-1.05 C
1967
-7.7 C
-0.74 C
1968
-6.9 C
+0.03 C
1969
-6.0 C
+0.95 C
1970
-6.6 C
+0.33 C
1971
-5.6 C
+1.39 C
1972
-8.9 C
-1.98 C
1973
-4.5 C
+2.45 C
1974
-7.3 C
-0.34 C
1975
-6.2 C
+0.76 C
1976
-5.8 C
+1.15 C
1977
-5.4 C
+1.57 C
1978
-7.5 C
-0.54 C
1979
-7.6 C
-0.70 C
1980
-5.5 C
+1.45 C
1981
-4.1 C
+2.87 C
1982
-8.8 C
-1.83 C
1983
-6.8 C
+0.12 C
The fitted trend in annual mean temperature here over 1949 to 1983 is 0.3 C (-0.1 to 0.8) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.6 F (-0.2 to 1.4) per decade. The slope is a straight line fitted to 33 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Fort Reliance
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.3 C (-0.1 to 0.8) per decade
0.6 F (-0.2 to 1.4) per decade
1949 to 1983
33
Not clearly different from zero
Mean daily maximum
0.3 C (-0.1 to 0.7) per decade
0.6 F (-0.2 to 1.3) per decade
1949 to 1983
33
Not clearly different from zero
Mean daily minimum
0.3 C (-0.2 to 0.8) per decade
0.6 F (-0.3 to 1.5) per decade
1949 to 1983
33
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
1948 to 1983
Yearly extremes at Fort Reliance: 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)
1961
28.3 C (82.9 F)
36
Coldest night (TNn)
-51.2 C (-60.2 F)
1964
-46.3 C (-51.3 F)
36
Wettest day (Rx1day)
39.9 mm (1.6 in)
1963
18.7 mm (0.7 in)
36
Wettest five days (Rx5day)
75.5 mm (3.0 in)
1965
28.3 mm (1.1 in)
36
Longest dry spell (CDD)
67 days
1957
36 days
36
Hottest day (TXx)
The hottest day of the year at Fort Reliance, 1948 to 1983. The record is 32.2 C (90.0 F) in 1961, marked on the chart; the median year is 28.3 C (82.9 F).
Hottest day (TXx) at Fort Reliance by year
Year
Hottest day (TXx)
1948
8.3 C (46.9 F)
1949
25.0 C (77.0 F)
1950
30.6 C (87.1 F)
1951
30.0 C (86.0 F)
1952
25.0 C (77.0 F)
1953
28.9 C (84.0 F)
1954
30.6 C (87.1 F)
1955
29.4 C (84.9 F)
1956
29.4 C (84.9 F)
1957
27.2 C (81.0 F)
1958
25.6 C (78.1 F)
1959
28.9 C (84.0 F)
1960
28.9 C (84.0 F)
1961
32.2 C (90.0 F)
1962
26.7 C (80.1 F)
1963
28.3 C (82.9 F)
1964
31.7 C (89.1 F)
1965
25.6 C (78.1 F)
1966
27.8 C (82.0 F)
1967
27.2 C (81.0 F)
1968
25.6 C (78.1 F)
1969
27.2 C (81.0 F)
1970
29.4 C (84.9 F)
1971
28.3 C (82.9 F)
1972
28.9 C (84.0 F)
1973
30.0 C (86.0 F)
1974
27.2 C (81.0 F)
1975
30.0 C (86.0 F)
1976
28.3 C (82.9 F)
1977
26.3 C (79.3 F)
1978
24.3 C (75.7 F)
1979
30.0 C (86.0 F)
1980
27.7 C (81.9 F)
1981
29.0 C (84.2 F)
1982
28.1 C (82.6 F)
1983
26.5 C (79.7 F)
Coldest night (TNn)
The coldest night of the year at Fort Reliance, 1948 to 1983. The record is -51.2 C (-60.2 F) in 1964, marked on the chart; the median year is -46.3 C (-51.3 F).
Coldest night (TNn) at Fort Reliance by year
Year
Coldest night (TNn)
1948
-39.4 C (-38.9 F)
1949
-45.6 C (-50.1 F)
1950
-48.9 C (-56.0 F)
1951
-48.9 C (-56.0 F)
1952
-47.8 C (-54.0 F)
1953
-50.6 C (-59.1 F)
1954
-44.4 C (-47.9 F)
1955
-46.7 C (-52.1 F)
1956
-45.6 C (-50.1 F)
1957
-49.4 C (-56.9 F)
1958
-48.9 C (-56.0 F)
1959
-42.8 C (-45.0 F)
1960
-44.4 C (-47.9 F)
1961
-45.6 C (-50.1 F)
1962
-46.7 C (-52.1 F)
1963
-49.4 C (-56.9 F)
1964
-51.2 C (-60.2 F)
1965
-44.4 C (-47.9 F)
1966
-48.3 C (-54.9 F)
1967
-48.3 C (-54.9 F)
1968
-48.3 C (-54.9 F)
1969
-43.9 C (-47.0 F)
1970
-51.2 C (-60.2 F)
1971
-48.3 C (-54.9 F)
1972
-46.1 C (-51.0 F)
1973
-47.2 C (-53.0 F)
1974
-47.8 C (-54.0 F)
1975
-44.4 C (-47.9 F)
1976
-42.2 C (-44.0 F)
1977
-44.9 C (-48.8 F)
1978
-44.6 C (-48.3 F)
1979
-46.1 C (-51.0 F)
1980
-44.0 C (-47.2 F)
1981
-45.6 C (-50.1 F)
1982
-44.2 C (-47.6 F)
1983
-46.5 C (-51.7 F)
Wettest day (Rx1day)
The wettest day of the year at Fort Reliance, 1948 to 1983. The record is 39.9 mm (1.6 in) in 1963, marked on the chart; the median year is 18.7 mm (0.7 in).
Wettest day (Rx1day) at Fort Reliance by year
Year
Wettest day (Rx1day)
1948
3.8 mm (0.15 in)
1949
18.3 mm (0.7 in)
1950
20.3 mm (0.8 in)
1951
34.3 mm (1.4 in)
1952
13.7 mm (0.5 in)
1953
14.0 mm (0.6 in)
1954
22.9 mm (0.9 in)
1955
16.8 mm (0.7 in)
1956
7.6 mm (0.30 in)
1957
15.7 mm (0.6 in)
1958
11.7 mm (0.5 in)
1959
38.1 mm (1.5 in)
1960
16.5 mm (0.6 in)
1961
10.7 mm (0.4 in)
1962
25.9 mm (1.0 in)
1963
39.9 mm (1.6 in)
1964
16.8 mm (0.7 in)
1965
35.3 mm (1.4 in)
1966
28.4 mm (1.1 in)
1967
17.5 mm (0.7 in)
1968
24.9 mm (1.0 in)
1969
13.0 mm (0.5 in)
1970
27.9 mm (1.1 in)
1971
21.8 mm (0.9 in)
1972
22.6 mm (0.9 in)
1973
16.3 mm (0.6 in)
1974
21.3 mm (0.8 in)
1975
29.0 mm (1.1 in)
1976
19.1 mm (0.8 in)
1977
14.7 mm (0.6 in)
1978
17.0 mm (0.7 in)
1979
30.4 mm (1.2 in)
1980
20.4 mm (0.8 in)
1981
17.2 mm (0.7 in)
1982
21.7 mm (0.9 in)
1983
11.9 mm (0.5 in)
Wettest five days (Rx5day)
The wettest five days of the year at Fort Reliance, 1948 to 1983. The record is 75.5 mm (3.0 in) in 1965, marked on the chart; the median year is 28.3 mm (1.1 in).
Wettest five days (Rx5day) at Fort Reliance by year
Year
Wettest five days (Rx5day)
1948
7.7 mm (0.30 in)
1949
19.8 mm (0.8 in)
1950
41.0 mm (1.6 in)
1951
49.0 mm (1.9 in)
1952
18.5 mm (0.7 in)
1953
23.1 mm (0.9 in)
1954
26.2 mm (1.0 in)
1955
23.6 mm (0.9 in)
1956
12.0 mm (0.5 in)
1957
22.4 mm (0.9 in)
1958
17.0 mm (0.7 in)
1959
65.0 mm (2.6 in)
1960
27.7 mm (1.1 in)
1961
19.6 mm (0.8 in)
1962
52.3 mm (2.1 in)
1963
60.7 mm (2.4 in)
1964
22.2 mm (0.9 in)
1965
75.5 mm (3.0 in)
1966
40.6 mm (1.6 in)
1967
26.9 mm (1.1 in)
1968
31.5 mm (1.2 in)
1969
28.8 mm (1.1 in)
1970
41.9 mm (1.6 in)
1971
42.6 mm (1.7 in)
1972
29.5 mm (1.2 in)
1973
33.3 mm (1.3 in)
1974
43.1 mm (1.7 in)
1975
35.6 mm (1.4 in)
1976
24.1 mm (0.9 in)
1977
26.9 mm (1.1 in)
1978
23.9 mm (0.9 in)
1979
35.5 mm (1.4 in)
1980
27.0 mm (1.1 in)
1981
49.6 mm (2.0 in)
1982
39.8 mm (1.6 in)
1983
24.0 mm (0.9 in)
Longest dry spell (CDD)
The longest dry spell of the year at Fort Reliance, 1948 to 1983. The record is 67 days in 1957, marked on the chart; the median year is 36 days.
Longest dry spell (CDD) at Fort Reliance by year
Year
Longest dry spell (CDD)
1948
23 days
1949
28 days
1950
37 days
1951
42 days
1952
38 days
1953
31 days
1954
29 days
1955
37 days
1956
40 days
1957
67 days
1958
33 days
1959
41 days
1960
26 days
1961
36 days
1962
42 days
1963
21 days
1964
38 days
1965
47 days
1966
27 days
1967
22 days
1968
49 days
1969
30 days
1970
49 days
1971
23 days
1972
33 days
1973
43 days
1974
31 days
1975
37 days
1976
34 days
1977
18 days
1978
22 days
1979
36 days
1980
43 days
1981
60 days
1982
30 days
1983
39 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
33 years with a frost
Across 33 years with a frost, the median last spring frost at Fort Reliance falls on 11 June and the median first autumn frost on 15 September, which leaves a median of 100 days between them.
Fitted over all years, the growing season changes by +8.3 days per decade at this station.
Frost dates and growing season at Fort Reliance
Measure
Median, all years
Earliest period
Recent period (1953 to 1983)
Recent against earliest
Fitted trend
Last spring frost
11 June
n/a
10 June
n/a
-4.0 days per decade
First autumn frost
15 September
n/a
15 September
n/a
+4.3 days per decade
Growing days
100 days
n/a
100 days
n/a
+8.3 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
35 years, 1949 to 1983
A day with at least 19.5 mm (0.8 in) of rain is expected about once in 2 years. A day with at least 47.7 mm (1.9 in) of rain is expected about once in 100 years.
Rainfall return levels at Fort Reliance: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
19.5 mm (0.8 in)
5 years
26.8 mm (1.1 in)
10 years
31.7 mm (1.2 in)
25 years
38.1 mm (1.5 in)
50 years
42.9 mm (1.7 in)
Longer than the 35 years of record
100 years
47.7 mm (1.9 in)
Longer than the 35 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, 35 years of values from 1949 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: 39.9 mm (1.6 in) in 1963; 38.1 mm (1.5 in) in 1959; 35.3 mm (1.4 in) in 1965.
Download the Data
Data for Fort Reliance standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Fort Reliance 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.