Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Longlac. 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 Longlac, 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)
-47.8 C (-54.0 F)
n/a
n/a
Feb
12.8 C (55.0 F)
-46.7 C (-52.1 F)
n/a
n/a
Mar
20.0 C (68.0 F)
-45.0 C (-49.0 F)
n/a
n/a
Apr
28.9 C (84.0 F)
-34.4 C (-29.9 F)
n/a
n/a
May
31.7 C (89.1 F)
-15.6 C (3.9 F)
n/a
n/a
Jun
36.7 C (98.1 F)
-6.7 C (19.9 F)
n/a
n/a
Jul
40.0 C (104.0 F)
-3.9 C (25.0 F)
n/a
n/a
Aug
35.0 C (95.0 F)
-4.4 C (24.1 F)
n/a
n/a
Sep
32.8 C (91.0 F)
-8.3 C (17.1 F)
n/a
n/a
Oct
28.9 C (84.0 F)
-24.4 C (-11.9 F)
n/a
n/a
Nov
17.2 C (63.0 F)
-37.8 C (-36.0 F)
n/a
n/a
Dec
9.4 C (48.9 F)
-50.0 C (-58.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Longlac still stand. 1923 holds the most, with 70.
Standing records at Longlac by the year they were set
Year set
Standing records
1921
53
1922
59
1923
70
1924
40
1925
43
1926
42
1927
42
1929
54
1930
54
1931
50
1932
37
1933
41
1934
37
1935
46
1936
62
1937
37
1938
35
1939
36
1940
45
1941
32
1942
55
1943
35
1944
31
1945
27
1946
47
1947
43
1948
29
1949
44
1950
40
1951
39
1952
22
1953
40
1954
27
1955
20
1956
33
1957
17
All-Time Record Progression
1 new records
1 all-time records were set at Longlac between 30 December 1953 and 30 December 1953. Each dot is a new record.
When Longlac set new all-time records
Date
Kind
Detail
1953-12-30
Record low minimum temperature
Record low minimum temperature -50.0 C (-58.0 F)
Wettest Day of Each Month
Jun: 80.8 mm (3.2 in)
The wettest day on record for each calendar month at Longlac. The most was 80.8 mm (3.2 in) on 15 June 1950.
Record daily precipitation for each month at Longlac
Month
Record daily precipitation (mm)
Date
Jan
27.9 mm (1.1 in)
25 January 1929
Feb
35.6 mm (1.4 in)
24 February 1936
Mar
35.6 mm (1.4 in)
25 March 1948
Apr
51.6 mm (2.0 in)
26 April 1938
May
76.5 mm (3.0 in)
30 May 1937
Jun
80.8 mm (3.2 in)
15 June 1950
Jul
51.6 mm (2.0 in)
27 July 1935
Aug
47.5 mm (1.9 in)
7 August 1950
Sep
59.4 mm (2.3 in)
24 September 1934
Oct
47.5 mm (1.9 in)
3 October 1950
Nov
47.0 mm (1.9 in)
5 November 1948
Dec
27.9 mm (1.1 in)
11 December 1922
Period of Record Coverage
1921 to 1957
Complete yearUnder 90 percent of days
36 years of record at Longlac, 1921 to 1957. 7 years have data for under 90 percent of days and are left out of rankings: 1921, 1925, 1927, 1932, 1944, 1945, 1957.
Cooler than the station meanWarmer than the station mean
One stripe for each of 23 complete years at Longlac, 1922 to 1956. Blue stripes are years cooler than the station's own mean of -0.2 C (31.7 F); red stripes are warmer. The coolest year was 1950, at -2.2 C (28.0 F), and the warmest was 1941, at 1.2 C (34.2 F). The strongest colour marks a difference of 2.1 C (3.8 F).
Annual mean temperature at Longlac as warming stripes, 1922 to 1956
Year
Annual mean temperature
Difference from the station mean
1922
-0.7 C
-0.49 C
1923
-0.9 C
-0.68 C
1924
-1.4 C
-1.23 C
1925
-0.7 C
-0.53 C
1926
-1.7 C
-1.56 C
1929
-0.7 C
-0.47 C
1930
1.1 C
+1.31 C
1933
-0.6 C
-0.44 C
1934
-0.3 C
-0.11 C
1935
0.2 C
+0.43 C
1936
-1.1 C
-0.95 C
1937
0.3 C
+0.45 C
1938
1.0 C
+1.18 C
1939
0.4 C
+0.60 C
1940
0.6 C
+0.76 C
1941
1.2 C
+1.42 C
1942
1.0 C
+1.18 C
1943
0.1 C
+0.25 C
1946
0.4 C
+0.55 C
1950
-2.2 C
-2.03 C
1952
0.6 C
+0.83 C
1953
0.4 C
+0.57 C
1956
-1.2 C
-1.04 C
This station does not have enough complete years (30 are needed) to fit a temperature trend.
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
1921 to 1957
Yearly extremes at Longlac: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
40.0 C (104.0 F)
1936
31.7 C (89.1 F)
36
Coldest night (TNn)
-50.0 C (-58.0 F)
1953
-42.8 C (-45.0 F)
36
Wettest day (Rx1day)
80.8 mm (3.2 in)
1950
36.6 mm (1.4 in)
36
Wettest five days (Rx5day)
118.6 mm (4.7 in)
1941
66.2 mm (2.6 in)
36
Longest dry spell (CDD)
41 days
1935
20 days
36
Hottest day (TXx)
The hottest day of the year at Longlac, 1921 to 1957. The record is 40.0 C (104.0 F) in 1936, marked on the chart; the median year is 31.7 C (89.1 F).
Hottest day (TXx) at Longlac by year
Year
Hottest day (TXx)
1921
36.1 C (97.0 F)
1922
28.3 C (82.9 F)
1923
31.7 C (89.1 F)
1924
29.4 C (84.9 F)
1925
28.9 C (84.0 F)
1926
33.3 C (91.9 F)
1927
31.1 C (88.0 F)
1929
32.2 C (90.0 F)
1930
31.7 C (89.1 F)
1931
32.8 C (91.0 F)
1932
31.1 C (88.0 F)
1933
36.7 C (98.1 F)
1934
31.1 C (88.0 F)
1935
32.8 C (91.0 F)
1936
40.0 C (104.0 F)
1937
33.3 C (91.9 F)
1938
31.1 C (88.0 F)
1939
31.7 C (89.1 F)
1940
33.3 C (91.9 F)
1941
32.8 C (91.0 F)
1942
31.1 C (88.0 F)
1943
33.3 C (91.9 F)
1944
30.6 C (87.1 F)
1945
32.8 C (91.0 F)
1946
28.3 C (82.9 F)
1947
33.3 C (91.9 F)
1948
32.8 C (91.0 F)
1949
35.0 C (95.0 F)
1950
30.0 C (86.0 F)
1951
30.0 C (86.0 F)
1952
31.7 C (89.1 F)
1953
31.1 C (88.0 F)
1954
30.0 C (86.0 F)
1955
32.8 C (91.0 F)
1956
34.4 C (93.9 F)
1957
29.4 C (84.9 F)
Coldest night (TNn)
The coldest night of the year at Longlac, 1921 to 1957. The record is -50.0 C (-58.0 F) in 1953, marked on the chart; the median year is -42.8 C (-45.0 F).
Coldest night (TNn) at Longlac by year
Year
Coldest night (TNn)
1921
-35.6 C (-32.1 F)
1922
-45.6 C (-50.1 F)
1923
-44.4 C (-47.9 F)
1924
-42.8 C (-45.0 F)
1925
-43.3 C (-45.9 F)
1926
-41.1 C (-42.0 F)
1927
-40.0 C (-40.0 F)
1929
-42.8 C (-45.0 F)
1930
-42.8 C (-45.0 F)
1931
-38.9 C (-38.0 F)
1932
-40.0 C (-40.0 F)
1933
-45.6 C (-50.1 F)
1934
-46.1 C (-51.0 F)
1935
-46.7 C (-52.1 F)
1936
-44.4 C (-47.9 F)
1937
-42.2 C (-44.0 F)
1938
-41.1 C (-42.0 F)
1939
-43.9 C (-47.0 F)
1940
-39.4 C (-38.9 F)
1941
-40.0 C (-40.0 F)
1942
-40.6 C (-41.1 F)
1943
-46.1 C (-51.0 F)
1944
-37.2 C (-35.0 F)
1945
-38.9 C (-38.0 F)
1946
-42.8 C (-45.0 F)
1947
-39.4 C (-38.9 F)
1948
-43.3 C (-45.9 F)
1949
-42.2 C (-44.0 F)
1950
-42.8 C (-45.0 F)
1951
-46.7 C (-52.1 F)
1952
-40.6 C (-41.1 F)
1953
-50.0 C (-58.0 F)
1954
-46.7 C (-52.1 F)
1955
-37.2 C (-35.0 F)
1956
-40.0 C (-40.0 F)
1957
-47.8 C (-54.0 F)
Wettest day (Rx1day)
The wettest day of the year at Longlac, 1921 to 1957. The record is 80.8 mm (3.2 in) in 1950, marked on the chart; the median year is 36.6 mm (1.4 in).
Wettest day (Rx1day) at Longlac by year
Year
Wettest day (Rx1day)
1921
42.9 mm (1.7 in)
1922
31.8 mm (1.3 in)
1923
30.5 mm (1.2 in)
1924
16.8 mm (0.7 in)
1925
36.8 mm (1.4 in)
1926
24.6 mm (1.0 in)
1927
22.9 mm (0.9 in)
1929
31.2 mm (1.2 in)
1930
27.4 mm (1.1 in)
1931
29.0 mm (1.1 in)
1932
31.5 mm (1.2 in)
1933
32.3 mm (1.3 in)
1934
59.4 mm (2.3 in)
1935
51.6 mm (2.0 in)
1936
35.6 mm (1.4 in)
1937
76.5 mm (3.0 in)
1938
51.6 mm (2.0 in)
1939
70.4 mm (2.8 in)
1940
27.9 mm (1.1 in)
1941
77.5 mm (3.1 in)
1942
36.8 mm (1.4 in)
1943
35.6 mm (1.4 in)
1944
35.6 mm (1.4 in)
1945
38.4 mm (1.5 in)
1946
30.5 mm (1.2 in)
1947
55.1 mm (2.2 in)
1948
47.0 mm (1.9 in)
1949
52.6 mm (2.1 in)
1950
80.8 mm (3.2 in)
1951
36.3 mm (1.4 in)
1952
37.3 mm (1.5 in)
1953
32.5 mm (1.3 in)
1954
27.7 mm (1.1 in)
1955
49.5 mm (1.9 in)
1956
37.8 mm (1.5 in)
1957
42.7 mm (1.7 in)
Wettest five days (Rx5day)
The wettest five days of the year at Longlac, 1921 to 1957. The record is 118.6 mm (4.7 in) in 1941, marked on the chart; the median year is 66.2 mm (2.6 in).
Wettest five days (Rx5day) at Longlac by year
Year
Wettest five days (Rx5day)
1921
55.2 mm (2.2 in)
1922
58.4 mm (2.3 in)
1923
79.1 mm (3.1 in)
1924
30.8 mm (1.2 in)
1925
43.4 mm (1.7 in)
1926
43.9 mm (1.7 in)
1927
42.2 mm (1.7 in)
1929
78.8 mm (3.1 in)
1930
41.2 mm (1.6 in)
1931
48.1 mm (1.9 in)
1932
60.9 mm (2.4 in)
1933
52.1 mm (2.1 in)
1934
76.7 mm (3.0 in)
1935
65.5 mm (2.6 in)
1936
45.8 mm (1.8 in)
1937
96.6 mm (3.8 in)
1938
73.9 mm (2.9 in)
1939
104.9 mm (4.1 in)
1940
98.6 mm (3.9 in)
1941
118.6 mm (4.7 in)
1942
72.4 mm (2.9 in)
1943
66.8 mm (2.6 in)
1944
96.6 mm (3.8 in)
1945
49.0 mm (1.9 in)
1946
69.6 mm (2.7 in)
1947
71.8 mm (2.8 in)
1948
68.8 mm (2.7 in)
1949
84.1 mm (3.3 in)
1950
91.4 mm (3.6 in)
1951
53.9 mm (2.1 in)
1952
52.3 mm (2.1 in)
1953
59.2 mm (2.3 in)
1954
46.5 mm (1.8 in)
1955
63.6 mm (2.5 in)
1956
75.4 mm (3.0 in)
1957
72.2 mm (2.8 in)
Longest dry spell (CDD)
The longest dry spell of the year at Longlac, 1921 to 1957. The record is 41 days in 1935, marked on the chart; the median year is 20 days.
Longest dry spell (CDD) at Longlac by year
Year
Longest dry spell (CDD)
1921
19 days
1922
30 days
1923
23 days
1924
22 days
1925
20 days
1926
20 days
1927
14 days
1929
14 days
1930
37 days
1931
19 days
1932
21 days
1933
16 days
1934
15 days
1935
41 days
1936
29 days
1937
27 days
1938
27 days
1939
11 days
1940
16 days
1941
15 days
1942
22 days
1943
34 days
1944
19 days
1945
9 days
1946
21 days
1947
25 days
1948
26 days
1949
17 days
1950
22 days
1951
14 days
1952
13 days
1953
17 days
1954
14 days
1955
27 days
1956
23 days
1957
19 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
23 years with a frost
Across 23 years with a frost, the median last spring frost at Longlac falls on 18 June and the median first autumn frost on 17 July, which leaves a median of 32 days between them.
Frost dates and growing season at Longlac
Measure
Median, all years
Earliest period
Recent period (1922 to 1956)
Recent against earliest
Fitted trend
Last spring frost
18 June
n/a
18 June
n/a
n/a
First autumn frost
17 July
n/a
17 July
n/a
n/a
Growing days
32 days
n/a
32 days
n/a
n/a
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
31 years, 1922 to 1956
A day with at least 36.2 mm (1.4 in) of rain is expected about once in 2 years. A day with at least 102.5 mm (4.0 in) of rain is expected about once in 100 years.
Rainfall return levels at Longlac: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
36.2 mm (1.4 in)
5 years
49.7 mm (2.0 in)
10 years
60.1 mm (2.4 in)
25 years
75.3 mm (3.0 in)
50 years
88.1 mm (3.5 in)
Longer than the 31 years of record
100 years
102.5 mm (4.0 in)
Longer than the 31 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, 31 years of values from 1922 to 1956.
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: 80.8 mm (3.2 in) in 1950; 76.5 mm (3.0 in) in 1937; 70.4 mm (2.8 in) in 1939.
Download the Data
Data for Longlac standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Longlac 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.