Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Edson. 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 Edson, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
12.8 C (55.0 F)
-48.3 C (-54.9 F)
n/a
n/a
Feb
21.1 C (70.0 F)
-44.4 C (-47.9 F)
n/a
n/a
Mar
22.2 C (72.0 F)
-41.1 C (-42.0 F)
n/a
n/a
Apr
30.0 C (86.0 F)
-34.4 C (-29.9 F)
n/a
n/a
May
32.2 C (90.0 F)
-13.3 C (8.1 F)
n/a
n/a
Jun
36.7 C (98.1 F)
-6.7 C (19.9 F)
n/a
n/a
Jul
37.2 C (99.0 F)
-3.9 C (25.0 F)
n/a
n/a
Aug
33.3 C (91.9 F)
-3.9 C (25.0 F)
n/a
n/a
Sep
31.1 C (88.0 F)
-18.3 C (-0.9 F)
n/a
n/a
Oct
28.9 C (84.0 F)
-25.6 C (-14.1 F)
n/a
n/a
Nov
20.6 C (69.1 F)
-36.7 C (-34.1 F)
n/a
n/a
Dec
16.7 C (62.1 F)
-47.8 C (-54.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Edson still stand. 1936 holds the most, with 64.
Standing records at Edson by the year they were set
Year set
Standing records
1914
3
1916
24
1917
43
1918
36
1919
52
1920
24
1921
36
1922
31
1923
27
1924
41
1925
33
1926
53
1927
20
1929
33
1930
38
1931
23
1932
32
1933
30
1934
50
1935
44
1936
64
1937
28
1938
31
1939
47
1940
22
1941
22
1942
30
1943
36
1944
34
1945
24
1946
14
1947
33
1948
24
1949
36
1950
54
1951
43
1952
19
1953
22
1954
55
1955
42
1956
39
1957
27
1958
18
1959
27
Wettest Day of Each Month
Jun: 79.0 mm (3.1 in)
The wettest day on record for each calendar month at Edson. The most was 79.0 mm (3.1 in) on 14 June 1944.
Record daily precipitation for each month at Edson
Month
Record daily precipitation (mm)
Date
Jan
22.9 mm (0.9 in)
14 January 1924
Feb
25.4 mm (1.0 in)
3 February 1917
Mar
20.3 mm (0.8 in)
14 March 1920
Apr
51.1 mm (2.0 in)
29 April 1940
May
54.1 mm (2.1 in)
28 May 1946
Jun
79.0 mm (3.1 in)
14 June 1944
Jul
65.5 mm (2.6 in)
24 July 1955
Aug
50.8 mm (2.0 in)
7 August 1938
Sep
37.1 mm (1.5 in)
6 September 1938
Oct
32.0 mm (1.3 in)
12 October 1939
Nov
35.6 mm (1.4 in)
15 November 1942
Dec
20.3 mm (0.8 in)
12 December 1933
Period of Record Coverage
1914 to 1960
Complete yearUnder 90 percent of days
45 years of record at Edson, 1914 to 1960. 3 years have data for under 90 percent of days and are left out of rankings: 1914, 1916, 1960.
Cooler than the station meanWarmer than the station mean
One stripe for each of 42 complete years at Edson, 1917 to 1959. Blue stripes are years cooler than the station's own mean of 1.9 C (35.4 F); red stripes are warmer. The coolest year was 1950, at -0.8 C (30.6 F), and the warmest was 1931, at 3.6 C (38.6 F). The strongest colour marks a difference of 2.7 C (4.9 F).
Annual mean temperature at Edson as warming stripes, 1917 to 1959
Year
Annual mean temperature
Difference from the station mean
1917
1.3 C
-0.59 C
1918
2.5 C
+0.59 C
1919
1.1 C
-0.73 C
1920
1.6 C
-0.25 C
1921
2.0 C
+0.12 C
1922
1.6 C
-0.32 C
1923
3.0 C
+1.13 C
1924
2.2 C
+0.32 C
1925
2.5 C
+0.63 C
1926
3.5 C
+1.62 C
1927
0.5 C
-1.41 C
1929
1.9 C
+0.03 C
1930
2.9 C
+0.99 C
1931
3.6 C
+1.77 C
1932
1.4 C
-0.45 C
1933
0.2 C
-1.63 C
1934
3.3 C
+1.41 C
1935
1.2 C
-0.71 C
1936
1.3 C
-0.62 C
1937
1.5 C
-0.39 C
1938
3.6 C
+1.68 C
1939
3.5 C
+1.67 C
1940
2.1 C
+0.23 C
1941
2.6 C
+0.71 C
1942
2.3 C
+0.38 C
1943
2.2 C
+0.34 C
1944
3.3 C
+1.38 C
1945
1.3 C
-0.62 C
1946
2.0 C
+0.09 C
1947
1.9 C
+0.07 C
1948
0.9 C
-0.97 C
1949
1.4 C
-0.45 C
1950
-0.8 C
-2.65 C
1951
-0.1 C
-2.01 C
1952
2.7 C
+0.83 C
1953
2.7 C
+0.87 C
1954
1.3 C
-0.60 C
1955
0.0 C
-1.87 C
1956
1.5 C
-0.40 C
1957
1.5 C
-0.39 C
1958
2.6 C
+0.69 C
1959
1.5 C
-0.37 C
The fitted trend in annual mean temperature here over 1917 to 1959 is -0.2 C (-0.4 to 0.1) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.3 F (-0.8 to 0.2) per decade. The slope is a straight line fitted to 42 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Edson
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.2 C (-0.4 to 0.1) per decade
-0.3 F (-0.8 to 0.2) per decade
1917 to 1959
42
Not clearly different from zero
Mean daily maximum
-0.4 C (-0.6 to -0.1) per decade
-0.6 F (-1.1 to -0.1) per decade
1917 to 1959
42
Fall
Mean daily minimum
0.02 C (-0.24 to 0.29) per decade
0.04 F (-0.43 to 0.52) per decade
1917 to 1959
42
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
1914 to 1960
Yearly extremes at Edson: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
37.2 C (99.0 F)
1924
31.7 C (89.1 F)
45
Coldest night (TNn)
-48.3 C (-54.9 F)
1943
-41.1 C (-42.0 F)
45
Wettest day (Rx1day)
79.0 mm (3.1 in)
1944
37.8 mm (1.5 in)
45
Wettest five days (Rx5day)
127.5 mm (5.0 in)
1958
58.5 mm (2.3 in)
45
Longest dry spell (CDD)
61 days
1923
27 days
45
Hottest day (TXx)
The hottest day of the year at Edson, 1914 to 1960. The record is 37.2 C (99.0 F) in 1924, marked on the chart; the median year is 31.7 C (89.1 F).
Hottest day (TXx) at Edson by year
Year
Hottest day (TXx)
1914
13.9 C (57.0 F)
1916
32.2 C (90.0 F)
1917
31.1 C (88.0 F)
1918
32.8 C (91.0 F)
1919
36.1 C (97.0 F)
1920
32.2 C (90.0 F)
1921
28.9 C (84.0 F)
1922
31.1 C (88.0 F)
1923
32.8 C (91.0 F)
1924
37.2 C (99.0 F)
1925
33.3 C (91.9 F)
1926
33.9 C (93.0 F)
1927
33.3 C (91.9 F)
1929
31.1 C (88.0 F)
1930
33.3 C (91.9 F)
1931
30.6 C (87.1 F)
1932
32.2 C (90.0 F)
1933
32.2 C (90.0 F)
1934
32.8 C (91.0 F)
1935
33.3 C (91.9 F)
1936
32.2 C (90.0 F)
1937
36.7 C (98.1 F)
1938
32.2 C (90.0 F)
1939
33.3 C (91.9 F)
1940
31.1 C (88.0 F)
1941
35.6 C (96.1 F)
1942
33.3 C (91.9 F)
1943
29.4 C (84.9 F)
1944
30.0 C (86.0 F)
1945
32.8 C (91.0 F)
1946
30.0 C (86.0 F)
1947
28.3 C (82.9 F)
1948
31.1 C (88.0 F)
1949
30.6 C (87.1 F)
1950
31.7 C (89.1 F)
1951
28.9 C (84.0 F)
1952
30.6 C (87.1 F)
1953
29.4 C (84.9 F)
1954
28.9 C (84.0 F)
1955
31.1 C (88.0 F)
1956
31.1 C (88.0 F)
1957
27.2 C (81.0 F)
1958
31.1 C (88.0 F)
1959
33.3 C (91.9 F)
1960
10.0 C (50.0 F)
Coldest night (TNn)
The coldest night of the year at Edson, 1914 to 1960. The record is -48.3 C (-54.9 F) in 1943, marked on the chart; the median year is -41.1 C (-42.0 F).
Coldest night (TNn) at Edson by year
Year
Coldest night (TNn)
1914
-40.0 C (-40.0 F)
1916
-39.4 C (-38.9 F)
1917
-44.4 C (-47.9 F)
1918
-41.1 C (-42.0 F)
1919
-43.3 C (-45.9 F)
1920
-46.1 C (-51.0 F)
1921
-41.7 C (-43.1 F)
1922
-40.0 C (-40.0 F)
1923
-42.2 C (-44.0 F)
1924
-47.8 C (-54.0 F)
1925
-37.2 C (-35.0 F)
1926
-36.7 C (-34.1 F)
1927
-41.1 C (-42.0 F)
1929
-44.4 C (-47.9 F)
1930
-41.7 C (-43.1 F)
1931
-31.1 C (-24.0 F)
1932
-42.8 C (-45.0 F)
1933
-39.4 C (-38.9 F)
1934
-41.1 C (-42.0 F)
1935
-43.9 C (-47.0 F)
1936
-44.4 C (-47.9 F)
1937
-39.4 C (-38.9 F)
1938
-40.0 C (-40.0 F)
1939
-43.3 C (-45.9 F)
1940
-38.3 C (-36.9 F)
1941
-35.6 C (-32.1 F)
1942
-31.7 C (-25.1 F)
1943
-48.3 C (-54.9 F)
1944
-34.4 C (-29.9 F)
1945
-36.1 C (-33.0 F)
1946
-36.1 C (-33.0 F)
1947
-44.4 C (-47.9 F)
1948
-37.8 C (-36.0 F)
1949
-42.2 C (-44.0 F)
1950
-48.3 C (-54.9 F)
1951
-41.1 C (-42.0 F)
1952
-37.8 C (-36.0 F)
1953
-42.8 C (-45.0 F)
1954
-41.7 C (-43.1 F)
1955
-38.9 C (-38.0 F)
1956
-41.7 C (-43.1 F)
1957
-38.3 C (-36.9 F)
1958
-36.1 C (-33.0 F)
1959
-37.8 C (-36.0 F)
1960
-32.2 C (-26.0 F)
Wettest day (Rx1day)
The wettest day of the year at Edson, 1914 to 1960. The record is 79.0 mm (3.1 in) in 1944, marked on the chart; the median year is 37.8 mm (1.5 in).
Wettest day (Rx1day) at Edson by year
Year
Wettest day (Rx1day)
1914
12.7 mm (0.5 in)
1916
11.4 mm (0.4 in)
1917
25.4 mm (1.0 in)
1918
20.3 mm (0.8 in)
1919
36.6 mm (1.4 in)
1920
31.0 mm (1.2 in)
1921
50.3 mm (2.0 in)
1922
22.4 mm (0.9 in)
1923
54.6 mm (2.1 in)
1924
35.8 mm (1.4 in)
1925
36.8 mm (1.4 in)
1926
39.4 mm (1.6 in)
1927
33.0 mm (1.3 in)
1929
53.3 mm (2.1 in)
1930
25.7 mm (1.0 in)
1931
48.8 mm (1.9 in)
1932
45.7 mm (1.8 in)
1933
26.9 mm (1.1 in)
1934
38.9 mm (1.5 in)
1935
30.5 mm (1.2 in)
1936
38.9 mm (1.5 in)
1937
45.7 mm (1.8 in)
1938
50.8 mm (2.0 in)
1939
48.0 mm (1.9 in)
1940
51.1 mm (2.0 in)
1941
34.0 mm (1.3 in)
1942
53.1 mm (2.1 in)
1943
37.8 mm (1.5 in)
1944
79.0 mm (3.1 in)
1945
25.9 mm (1.0 in)
1946
54.1 mm (2.1 in)
1947
40.6 mm (1.6 in)
1948
40.9 mm (1.6 in)
1949
23.9 mm (0.9 in)
1950
14.2 mm (0.6 in)
1951
47.0 mm (1.9 in)
1952
44.5 mm (1.8 in)
1953
41.4 mm (1.6 in)
1954
37.6 mm (1.5 in)
1955
65.5 mm (2.6 in)
1956
33.0 mm (1.3 in)
1957
25.4 mm (1.0 in)
1958
70.1 mm (2.8 in)
1959
20.6 mm (0.8 in)
1960
5.1 mm (0.20 in)
Wettest five days (Rx5day)
The wettest five days of the year at Edson, 1914 to 1960. The record is 127.5 mm (5.0 in) in 1958, marked on the chart; the median year is 58.5 mm (2.3 in).
Wettest five days (Rx5day) at Edson by year
Year
Wettest five days (Rx5day)
1914
22.9 mm (0.9 in)
1916
12.7 mm (0.5 in)
1917
25.4 mm (1.0 in)
1918
20.3 mm (0.8 in)
1919
90.2 mm (3.6 in)
1920
49.8 mm (2.0 in)
1921
57.1 mm (2.2 in)
1922
28.5 mm (1.1 in)
1923
67.1 mm (2.6 in)
1924
46.9 mm (1.8 in)
1925
86.5 mm (3.4 in)
1926
57.7 mm (2.3 in)
1927
52.8 mm (2.1 in)
1929
60.5 mm (2.4 in)
1930
48.6 mm (1.9 in)
1931
62.8 mm (2.5 in)
1932
52.3 mm (2.1 in)
1933
47.0 mm (1.9 in)
1934
58.5 mm (2.3 in)
1935
44.6 mm (1.8 in)
1936
53.9 mm (2.1 in)
1937
71.9 mm (2.8 in)
1938
91.7 mm (3.6 in)
1939
83.8 mm (3.3 in)
1940
53.6 mm (2.1 in)
1941
59.6 mm (2.3 in)
1942
58.9 mm (2.3 in)
1943
62.5 mm (2.5 in)
1944
106.9 mm (4.2 in)
1945
71.8 mm (2.8 in)
1946
59.5 mm (2.3 in)
1947
71.4 mm (2.8 in)
1948
102.1 mm (4.0 in)
1949
45.4 mm (1.8 in)
1950
31.2 mm (1.2 in)
1951
62.0 mm (2.4 in)
1952
67.4 mm (2.7 in)
1953
80.3 mm (3.2 in)
1954
90.2 mm (3.6 in)
1955
93.7 mm (3.7 in)
1956
55.6 mm (2.2 in)
1957
57.9 mm (2.3 in)
1958
127.5 mm (5.0 in)
1959
37.9 mm (1.5 in)
1960
14.1 mm (0.6 in)
Longest dry spell (CDD)
The longest dry spell of the year at Edson, 1914 to 1960. The record is 61 days in 1923, marked on the chart; the median year is 27 days.
Longest dry spell (CDD) at Edson by year
Year
Longest dry spell (CDD)
1914
21 days
1916
16 days
1917
39 days
1918
27 days
1919
33 days
1920
32 days
1921
47 days
1922
20 days
1923
61 days
1924
27 days
1925
27 days
1926
34 days
1927
28 days
1929
35 days
1930
41 days
1931
39 days
1932
23 days
1933
35 days
1934
27 days
1935
26 days
1936
13 days
1937
22 days
1938
33 days
1939
34 days
1940
23 days
1941
27 days
1942
25 days
1943
23 days
1944
29 days
1945
25 days
1946
41 days
1947
28 days
1948
22 days
1949
26 days
1950
29 days
1951
12 days
1952
43 days
1953
21 days
1954
28 days
1955
23 days
1956
31 days
1957
23 days
1958
32 days
1959
22 days
1960
22 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
42 years with a frost
Across 42 years with a frost, the median last spring frost at Edson falls on 18 June and the median first autumn frost on 16 August, which leaves a median of 61 days between them.
Fitted over all years, the growing season changes by +4.4 days per decade at this station.
Frost dates and growing season at Edson
Measure
Median, all years
Earliest period
Recent period (1930 to 1959)
Recent against earliest
Fitted trend
Last spring frost
18 June
n/a
15 June
n/a
-1.1 days per decade
First autumn frost
16 August
n/a
16 August
n/a
+3.3 days per decade
Growing days
61 days
n/a
61 days
n/a
+4.4 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
39 years, 1920 to 1959
A day with at least 39.8 mm (1.6 in) of rain is expected about once in 2 years. A day with at least 77.1 mm (3.0 in) of rain is expected about once in 100 years.
Rainfall return levels at Edson: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
39.8 mm (1.6 in)
5 years
52.2 mm (2.1 in)
10 years
59.3 mm (2.3 in)
25 years
67.3 mm (2.6 in)
50 years
72.5 mm (2.9 in)
Longer than the 39 years of record
100 years
77.1 mm (3.0 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 1920 to 1959.
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: 79.0 mm (3.1 in) in 1944; 70.1 mm (2.8 in) in 1958; 65.5 mm (2.6 in) in 1955.
Station Changes
1 suspected
One change was suspected in the annual mean temperature of Edson, at 1940. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1940 ran 0.5 C (0.9 F) lower than in the years before (likely change).
Suspected changes in the annual mean temperature at Edson, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1940
-0.5
-0.9
likely
5
Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.
Download the Data
Data for Edson standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Edson 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.