Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Lake Megantic. 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 Lake Megantic, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
11.1 C (52.0 F)
-38.9 C (-38.0 F)
n/a
n/a
Feb
17.8 C (64.0 F)
-38.9 C (-38.0 F)
n/a
n/a
Mar
23.9 C (75.0 F)
-37.2 C (-35.0 F)
n/a
n/a
Apr
27.8 C (82.0 F)
-19.4 C (-2.9 F)
n/a
n/a
May
30.0 C (86.0 F)
-8.9 C (16.0 F)
n/a
n/a
Jun
34.4 C (93.9 F)
-1.7 C (28.9 F)
n/a
n/a
Jul
35.0 C (95.0 F)
0.0 C (32.0 F)
n/a
n/a
Aug
35.6 C (96.1 F)
0.6 C (33.1 F)
n/a
n/a
Sep
30.6 C (87.1 F)
-9.4 C (15.1 F)
n/a
n/a
Oct
26.1 C (79.0 F)
-12.2 C (10.0 F)
n/a
n/a
Nov
20.0 C (68.0 F)
-23.3 C (-9.9 F)
n/a
n/a
Dec
17.8 C (64.0 F)
-38.9 C (-38.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Lake Megantic still stand. 1914 holds the most, with 76.
Standing records at Lake Megantic by the year they were set
Year set
Standing records
1913
2
1914
76
1915
37
1916
46
1917
44
1918
68
1919
39
1920
46
1921
76
1922
39
1923
58
1924
33
1925
32
1926
35
1927
39
1928
29
1929
54
1930
38
1931
36
1932
40
1933
57
1934
59
1935
45
1936
55
1937
28
1938
40
1939
29
1940
38
1941
31
1942
40
1943
32
1944
41
1945
39
1946
48
1947
15
All-Time Record Progression
1 new records
1 all-time records were set at Lake Megantic between 6 January 1944 and 6 January 1944. Each dot is a new record.
When Lake Megantic set new all-time records
Date
Kind
Detail
1944-01-06
Record daily snowfall
Record daily snowfall 58.4 cm (23.0 in)
Wettest Day of Each Month
Jun: 82.6 mm (3.3 in)
The wettest day on record for each calendar month at Lake Megantic. The most was 82.6 mm (3.3 in) on 17 June 1917.
Record daily precipitation for each month at Lake Megantic
Month
Record daily precipitation (mm)
Date
Jan
58.4 mm (2.3 in)
6 January 1944
Feb
48.3 mm (1.9 in)
13 February 1923
Mar
38.1 mm (1.5 in)
9 March 1916
Apr
48.0 mm (1.9 in)
8 April 1914
May
73.7 mm (2.9 in)
27 May 1933
Jun
82.6 mm (3.3 in)
17 June 1917
Jul
63.5 mm (2.5 in)
31 July 1917
Aug
41.9 mm (1.6 in)
10 August 1915
Sep
53.8 mm (2.1 in)
10 September 1942
Oct
77.2 mm (3.0 in)
23 October 1927
Nov
45.7 mm (1.8 in)
19 November 1932
Dec
45.7 mm (1.8 in)
4 December 1942
Period of Record Coverage
1913 to 1947
Complete yearUnder 90 percent of days
35 years of record at Lake Megantic, 1913 to 1947. 2 years have data for under 90 percent of days and are left out of rankings: 1913, 1947.
Cooler than the station meanWarmer than the station mean
One stripe for each of 25 complete years at Lake Megantic, 1915 to 1946. Blue stripes are years cooler than the station's own mean of 3.7 C (38.6 F); red stripes are warmer. The coolest year was 1917, at 2.0 C (35.5 F), and the warmest was 1946, at 5.2 C (41.3 F). The strongest colour marks a difference of 1.7 C (3.1 F).
Annual mean temperature at Lake Megantic as warming stripes, 1915 to 1946
Year
Annual mean temperature
Difference from the station mean
1915
4.3 C
+0.61 C
1916
3.9 C
+0.21 C
1917
2.0 C
-1.70 C
1918
3.3 C
-0.33 C
1919
3.9 C
+0.22 C
1920
3.7 C
+0.05 C
1921
5.0 C
+1.32 C
1922
3.8 C
+0.15 C
1923
2.7 C
-0.95 C
1924
2.7 C
-0.99 C
1926
2.0 C
-1.70 C
1927
4.3 C
+0.63 C
1928
3.7 C
+0.06 C
1931
4.9 C
+1.20 C
1932
4.2 C
+0.55 C
1934
3.4 C
-0.31 C
1935
3.4 C
-0.31 C
1936
3.5 C
-0.18 C
1938
3.9 C
+0.25 C
1939
2.8 C
-0.90 C
1940
2.6 C
-1.11 C
1941
4.4 C
+0.68 C
1942
4.8 C
+1.15 C
1943
3.5 C
-0.14 C
1946
5.2 C
+1.50 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
1913 to 1947
Yearly extremes at Lake Megantic: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
35.6 C (96.1 F)
1916
31.1 C (88.0 F)
35
Coldest night (TNn)
-38.9 C (-38.0 F)
1925
-32.8 C (-27.0 F)
34
Wettest day (Rx1day)
82.6 mm (3.3 in)
1917
45.5 mm (1.8 in)
35
Wettest five days (Rx5day)
161.4 mm (6.4 in)
1917
69.1 mm (2.7 in)
35
Longest dry spell (CDD)
31 days
1930
14 days
35
Hottest day (TXx)
The hottest day of the year at Lake Megantic, 1913 to 1947. The record is 35.6 C (96.1 F) in 1916, marked on the chart; the median year is 31.1 C (88.0 F).
Hottest day (TXx) at Lake Megantic by year
Year
Hottest day (TXx)
1913
8.3 C (46.9 F)
1914
31.7 C (89.1 F)
1915
29.4 C (84.9 F)
1916
35.6 C (96.1 F)
1917
32.2 C (90.0 F)
1918
32.2 C (90.0 F)
1919
34.4 C (93.9 F)
1920
31.1 C (88.0 F)
1921
35.0 C (95.0 F)
1922
30.6 C (87.1 F)
1923
31.1 C (88.0 F)
1924
28.3 C (82.9 F)
1925
32.2 C (90.0 F)
1926
27.8 C (82.0 F)
1927
27.8 C (82.0 F)
1928
29.4 C (84.9 F)
1929
29.4 C (84.9 F)
1930
29.4 C (84.9 F)
1931
32.2 C (90.0 F)
1932
28.3 C (82.9 F)
1933
33.3 C (91.9 F)
1934
30.6 C (87.1 F)
1935
33.3 C (91.9 F)
1936
27.8 C (82.0 F)
1937
31.1 C (88.0 F)
1938
31.1 C (88.0 F)
1939
30.6 C (87.1 F)
1940
28.9 C (84.0 F)
1941
30.0 C (86.0 F)
1942
31.7 C (89.1 F)
1943
32.2 C (90.0 F)
1944
33.3 C (91.9 F)
1945
31.7 C (89.1 F)
1946
33.3 C (91.9 F)
1947
31.1 C (88.0 F)
Coldest night (TNn)
The coldest night of the year at Lake Megantic, 1913 to 1947. The record is -38.9 C (-38.0 F) in 1925, marked on the chart; the median year is -32.8 C (-27.0 F).
Coldest night (TNn) at Lake Megantic by year
Year
Coldest night (TNn)
1913
n/a
1914
-35.0 C (-31.0 F)
1915
-30.6 C (-23.1 F)
1916
-30.6 C (-23.1 F)
1917
-35.6 C (-32.1 F)
1918
-35.6 C (-32.1 F)
1919
-30.0 C (-22.0 F)
1920
-37.2 C (-35.0 F)
1921
-28.9 C (-20.0 F)
1922
-32.8 C (-27.0 F)
1923
-32.2 C (-26.0 F)
1924
-33.3 C (-27.9 F)
1925
-38.9 C (-38.0 F)
1926
-30.0 C (-22.0 F)
1927
-30.6 C (-23.1 F)
1928
-28.3 C (-18.9 F)
1929
-31.7 C (-25.1 F)
1930
-37.2 C (-35.0 F)
1931
-31.7 C (-25.1 F)
1932
-26.7 C (-16.1 F)
1933
-38.9 C (-38.0 F)
1934
-38.9 C (-38.0 F)
1935
-35.6 C (-32.1 F)
1936
-32.8 C (-27.0 F)
1937
-28.3 C (-18.9 F)
1938
-37.2 C (-35.0 F)
1939
-28.3 C (-18.9 F)
1940
-30.6 C (-23.1 F)
1941
-33.9 C (-29.0 F)
1942
-33.3 C (-27.9 F)
1943
-33.3 C (-27.9 F)
1944
-33.3 C (-27.9 F)
1945
-34.4 C (-29.9 F)
1946
-31.7 C (-25.1 F)
1947
-26.1 C (-15.0 F)
Wettest day (Rx1day)
The wettest day of the year at Lake Megantic, 1913 to 1947. The record is 82.6 mm (3.3 in) in 1917, marked on the chart; the median year is 45.5 mm (1.8 in).
Wettest day (Rx1day) at Lake Megantic by year
Year
Wettest day (Rx1day)
1913
27.9 mm (1.1 in)
1914
48.0 mm (1.9 in)
1915
41.9 mm (1.6 in)
1916
38.1 mm (1.5 in)
1917
82.6 mm (3.3 in)
1918
50.8 mm (2.0 in)
1919
59.7 mm (2.4 in)
1920
30.5 mm (1.2 in)
1921
50.8 mm (2.0 in)
1922
45.7 mm (1.8 in)
1923
64.5 mm (2.5 in)
1924
40.9 mm (1.6 in)
1925
50.8 mm (2.0 in)
1926
38.1 mm (1.5 in)
1927
77.2 mm (3.0 in)
1928
35.6 mm (1.4 in)
1929
41.4 mm (1.6 in)
1930
31.8 mm (1.3 in)
1931
45.7 mm (1.8 in)
1932
45.7 mm (1.8 in)
1933
75.9 mm (3.0 in)
1934
39.4 mm (1.6 in)
1935
33.0 mm (1.3 in)
1936
38.6 mm (1.5 in)
1937
38.6 mm (1.5 in)
1938
53.3 mm (2.1 in)
1939
45.5 mm (1.8 in)
1940
27.9 mm (1.1 in)
1941
24.9 mm (1.0 in)
1942
78.0 mm (3.1 in)
1943
44.5 mm (1.8 in)
1944
58.4 mm (2.3 in)
1945
51.8 mm (2.0 in)
1946
51.1 mm (2.0 in)
1947
38.1 mm (1.5 in)
Wettest five days (Rx5day)
The wettest five days of the year at Lake Megantic, 1913 to 1947. The record is 161.4 mm (6.4 in) in 1917, marked on the chart; the median year is 69.1 mm (2.7 in).
Wettest five days (Rx5day) at Lake Megantic by year
Year
Wettest five days (Rx5day)
1913
50.8 mm (2.0 in)
1914
57.6 mm (2.3 in)
1915
69.1 mm (2.7 in)
1916
68.6 mm (2.7 in)
1917
161.4 mm (6.4 in)
1918
78.8 mm (3.1 in)
1919
83.8 mm (3.3 in)
1920
52.1 mm (2.1 in)
1921
77.5 mm (3.1 in)
1922
81.8 mm (3.2 in)
1923
71.2 mm (2.8 in)
1924
68.8 mm (2.7 in)
1925
109.3 mm (4.3 in)
1926
73.7 mm (2.9 in)
1927
77.2 mm (3.0 in)
1928
67.8 mm (2.7 in)
1929
56.1 mm (2.2 in)
1930
62.7 mm (2.5 in)
1931
56.9 mm (2.2 in)
1932
62.3 mm (2.5 in)
1933
112.9 mm (4.4 in)
1934
51.8 mm (2.0 in)
1935
55.2 mm (2.2 in)
1936
70.9 mm (2.8 in)
1937
52.0 mm (2.0 in)
1938
61.8 mm (2.4 in)
1939
92.2 mm (3.6 in)
1940
45.0 mm (1.8 in)
1941
51.6 mm (2.0 in)
1942
128.8 mm (5.1 in)
1943
105.5 mm (4.2 in)
1944
62.2 mm (2.4 in)
1945
91.1 mm (3.6 in)
1946
74.2 mm (2.9 in)
1947
78.2 mm (3.1 in)
Longest dry spell (CDD)
The longest dry spell of the year at Lake Megantic, 1913 to 1947. The record is 31 days in 1930, marked on the chart; the median year is 14 days.
Longest dry spell (CDD) at Lake Megantic by year
Year
Longest dry spell (CDD)
1913
11 days
1914
17 days
1915
14 days
1916
13 days
1917
13 days
1918
16 days
1919
10 days
1920
11 days
1921
14 days
1922
14 days
1923
10 days
1924
13 days
1925
15 days
1926
10 days
1927
21 days
1928
15 days
1929
11 days
1930
31 days
1931
20 days
1932
19 days
1933
13 days
1934
12 days
1935
14 days
1936
15 days
1937
13 days
1938
18 days
1939
17 days
1940
13 days
1941
14 days
1942
15 days
1943
16 days
1944
15 days
1945
14 days
1946
16 days
1947
9 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
25 years with a frost
Across 25 years with a frost, the median last spring frost at Lake Megantic falls on 25 May and the median first autumn frost on 18 September, which leaves a median of 116 days between them.
Fitted over all years, the growing season changes by +8.9 days per decade at this station.
Frost dates and growing season at Lake Megantic
Measure
Median, all years
Earliest period
Recent period (1915 to 1946)
Recent against earliest
Fitted trend
Last spring frost
25 May
n/a
25 May
n/a
-5.1 days per decade
First autumn frost
18 September
n/a
18 September
n/a
+3.9 days per decade
Growing days
116 days
n/a
116 days
n/a
+8.9 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
31 years, 1914 to 1946
A day with at least 46.0 mm (1.8 in) of rain is expected about once in 2 years. A day with at least 96.7 mm (3.8 in) of rain is expected about once in 100 years.
Rainfall return levels at Lake Megantic: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
46.0 mm (1.8 in)
5 years
59.5 mm (2.3 in)
10 years
68.4 mm (2.7 in)
25 years
79.8 mm (3.1 in)
50 years
88.3 mm (3.5 in)
Longer than the 31 years of record
100 years
96.7 mm (3.8 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 1914 to 1946.
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: 82.6 mm (3.3 in) in 1917; 78.0 mm (3.1 in) in 1942; 77.2 mm (3.0 in) in 1927.
Download the Data
Data for Lake Megantic standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Lake Megantic 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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.