Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Coaticook. 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 Coaticook, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
17.8 C (64.0 F)
-41.7 C (-43.1 F)
n/a
n/a
Feb
17.0 C (62.6 F)
-36.1 C (-33.0 F)
n/a
n/a
Mar
24.4 C (75.9 F)
-29.4 C (-20.9 F)
n/a
n/a
Apr
29.4 C (84.9 F)
-20.0 C (-4.0 F)
n/a
n/a
May
31.7 C (89.1 F)
-7.8 C (18.0 F)
n/a
n/a
Jun
33.3 C (91.9 F)
-2.2 C (28.0 F)
n/a
n/a
Jul
35.0 C (95.0 F)
-1.1 C (30.0 F)
n/a
n/a
Aug
34.4 C (93.9 F)
-1.1 C (30.0 F)
n/a
n/a
Sep
32.2 C (90.0 F)
-5.6 C (21.9 F)
n/a
n/a
Oct
28.9 C (84.0 F)
-10.6 C (12.9 F)
n/a
n/a
Nov
25.0 C (77.0 F)
-25.0 C (-13.0 F)
n/a
n/a
Dec
17.8 C (64.0 F)
-36.1 C (-33.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Coaticook still stand. 1950 holds the most, with 69.
Standing records at Coaticook by the year they were set
Year set
Standing records
1949
14
1950
69
1951
42
1952
33
1953
48
1954
62
1955
55
1956
68
1957
54
1958
40
1959
56
1960
32
1961
38
1962
51
1963
48
1964
36
1965
38
1966
46
1967
33
1968
41
1969
31
1970
36
1971
33
1972
22
1973
38
1974
31
1975
29
1976
47
1977
38
1978
29
1979
64
1980
29
1981
52
1982
42
1983
39
Wettest Day of Each Month
Jun: 113.0 mm (4.4 in)
The wettest day on record for each calendar month at Coaticook. The most was 113.0 mm (4.4 in) on 27 June 1954.
Record daily precipitation for each month at Coaticook
Month
Record daily precipitation (mm)
Date
Jan
38.1 mm (1.5 in)
22 January 1958
Feb
50.8 mm (2.0 in)
25 February 1966
Mar
40.0 mm (1.6 in)
12 March 1983
Apr
41.9 mm (1.6 in)
21 April 1950
May
45.5 mm (1.8 in)
18 May 1976
Jun
113.0 mm (4.4 in)
27 June 1954
Jul
69.3 mm (2.7 in)
12 July 1951
Aug
86.6 mm (3.4 in)
26 August 1975
Sep
54.6 mm (2.1 in)
12 September 1960
Oct
46.5 mm (1.8 in)
6 October 1962
Nov
53.3 mm (2.1 in)
27 November 1959
Dec
45.7 mm (1.8 in)
12 December 1952
Period of Record Coverage
1949 to 1983
Complete yearUnder 90 percent of days
35 years of record at Coaticook, 1949 to 1983. 5 years have data for under 90 percent of days and are left out of rankings: 1949, 1968, 1970, 1972, 1976.
Cooler than the station meanWarmer than the station mean
One stripe for each of 25 complete years at Coaticook, 1950 to 1983. Blue stripes are years cooler than the station's own mean of 5.0 C (40.9 F); red stripes are warmer. The coolest year was 1962, at 3.4 C (38.2 F), and the warmest was 1953, at 6.2 C (43.2 F). The strongest colour marks a difference of 1.6 C (2.9 F).
Annual mean temperature at Coaticook as warming stripes, 1950 to 1983
Year
Annual mean temperature
Difference from the station mean
1950
5.5 C
+0.52 C
1952
5.3 C
+0.36 C
1953
6.2 C
+1.27 C
1954
4.1 C
-0.86 C
1955
4.3 C
-0.64 C
1956
3.5 C
-1.43 C
1957
4.1 C
-0.83 C
1958
4.8 C
-0.20 C
1959
5.6 C
+0.64 C
1960
5.5 C
+0.57 C
1961
4.8 C
-0.20 C
1962
3.4 C
-1.52 C
1964
5.4 C
+0.47 C
1965
4.5 C
-0.49 C
1966
4.9 C
-0.01 C
1967
4.9 C
-0.08 C
1969
4.9 C
-0.08 C
1974
4.7 C
-0.22 C
1977
5.1 C
+0.16 C
1978
3.9 C
-1.01 C
1979
6.0 C
+1.08 C
1980
4.7 C
-0.23 C
1981
6.1 C
+1.14 C
1982
5.4 C
+0.46 C
1983
6.1 C
+1.19 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
1949 to 1983
Yearly extremes at Coaticook: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
35.0 C (95.0 F)
1964
31.7 C (89.1 F)
35
Coldest night (TNn)
-41.7 C (-43.1 F)
1957
-32.2 C (-26.0 F)
35
Wettest day (Rx1day)
113.0 mm (4.4 in)
1954
42.7 mm (1.7 in)
35
Wettest five days (Rx5day)
126.9 mm (5.0 in)
1954
68.6 mm (2.7 in)
35
Longest dry spell (CDD)
27 days
1959
14 days
35
Hottest day (TXx)
The hottest day of the year at Coaticook, 1949 to 1983. The record is 35.0 C (95.0 F) in 1964, marked on the chart; the median year is 31.7 C (89.1 F).
Hottest day (TXx) at Coaticook by year
Year
Hottest day (TXx)
1949
28.9 C (84.0 F)
1950
30.6 C (87.1 F)
1951
30.6 C (87.1 F)
1952
33.9 C (93.0 F)
1953
34.4 C (93.9 F)
1954
30.6 C (87.1 F)
1955
33.3 C (91.9 F)
1956
31.1 C (88.0 F)
1957
33.3 C (91.9 F)
1958
32.2 C (90.0 F)
1959
34.4 C (93.9 F)
1960
32.2 C (90.0 F)
1961
32.2 C (90.0 F)
1962
31.1 C (88.0 F)
1963
32.2 C (90.0 F)
1964
35.0 C (95.0 F)
1965
31.1 C (88.0 F)
1966
32.2 C (90.0 F)
1967
29.4 C (84.9 F)
1968
28.9 C (84.0 F)
1969
31.7 C (89.1 F)
1970
32.2 C (90.0 F)
1971
30.6 C (87.1 F)
1972
31.7 C (89.1 F)
1973
31.7 C (89.1 F)
1974
30.0 C (86.0 F)
1975
34.4 C (93.9 F)
1976
29.4 C (84.9 F)
1977
32.8 C (91.0 F)
1978
31.7 C (89.1 F)
1979
32.2 C (90.0 F)
1980
30.0 C (86.0 F)
1981
31.0 C (87.8 F)
1982
32.0 C (89.6 F)
1983
33.5 C (92.3 F)
Coldest night (TNn)
The coldest night of the year at Coaticook, 1949 to 1983. The record is -41.7 C (-43.1 F) in 1957, marked on the chart; the median year is -32.2 C (-26.0 F).
Coldest night (TNn) at Coaticook by year
Year
Coldest night (TNn)
1949
-25.0 C (-13.0 F)
1950
-30.6 C (-23.1 F)
1951
-35.6 C (-32.1 F)
1952
-30.0 C (-22.0 F)
1953
-27.8 C (-18.0 F)
1954
-35.6 C (-32.1 F)
1955
-36.1 C (-33.0 F)
1956
-32.8 C (-27.0 F)
1957
-41.7 C (-43.1 F)
1958
-32.2 C (-26.0 F)
1959
-33.3 C (-27.9 F)
1960
-32.8 C (-27.0 F)
1961
-33.3 C (-27.9 F)
1962
-35.6 C (-32.1 F)
1963
-32.2 C (-26.0 F)
1964
-29.4 C (-20.9 F)
1965
-32.2 C (-26.0 F)
1966
-29.4 C (-20.9 F)
1967
-31.7 C (-25.1 F)
1968
-34.4 C (-29.9 F)
1969
-27.2 C (-17.0 F)
1970
-32.2 C (-26.0 F)
1971
-32.8 C (-27.0 F)
1972
-33.9 C (-29.0 F)
1973
-31.7 C (-25.1 F)
1974
-34.4 C (-29.9 F)
1975
-28.9 C (-20.0 F)
1976
-31.7 C (-25.1 F)
1977
-30.0 C (-22.0 F)
1978
-31.1 C (-24.0 F)
1979
-33.9 C (-29.0 F)
1980
-29.0 C (-20.2 F)
1981
-36.0 C (-32.8 F)
1982
-34.0 C (-29.2 F)
1983
-30.0 C (-22.0 F)
Wettest day (Rx1day)
The wettest day of the year at Coaticook, 1949 to 1983. The record is 113.0 mm (4.4 in) in 1954, marked on the chart; the median year is 42.7 mm (1.7 in).
Wettest day (Rx1day) at Coaticook by year
Year
Wettest day (Rx1day)
1949
30.2 mm (1.2 in)
1950
41.9 mm (1.6 in)
1951
69.3 mm (2.7 in)
1952
50.8 mm (2.0 in)
1953
38.1 mm (1.5 in)
1954
113.0 mm (4.4 in)
1955
29.5 mm (1.2 in)
1956
31.2 mm (1.2 in)
1957
38.6 mm (1.5 in)
1958
52.8 mm (2.1 in)
1959
53.3 mm (2.1 in)
1960
55.1 mm (2.2 in)
1961
42.4 mm (1.7 in)
1962
46.5 mm (1.8 in)
1963
48.0 mm (1.9 in)
1964
55.1 mm (2.2 in)
1965
42.7 mm (1.7 in)
1966
57.4 mm (2.3 in)
1967
56.1 mm (2.2 in)
1968
43.2 mm (1.7 in)
1969
41.7 mm (1.6 in)
1970
35.6 mm (1.4 in)
1971
40.6 mm (1.6 in)
1972
30.5 mm (1.2 in)
1973
38.9 mm (1.5 in)
1974
56.6 mm (2.2 in)
1975
86.6 mm (3.4 in)
1976
45.5 mm (1.8 in)
1977
39.1 mm (1.5 in)
1978
36.8 mm (1.4 in)
1979
32.8 mm (1.3 in)
1980
33.8 mm (1.3 in)
1981
47.2 mm (1.9 in)
1982
39.0 mm (1.5 in)
1983
43.0 mm (1.7 in)
Wettest five days (Rx5day)
The wettest five days of the year at Coaticook, 1949 to 1983. The record is 126.9 mm (5.0 in) in 1954, marked on the chart; the median year is 68.6 mm (2.7 in).
Wettest five days (Rx5day) at Coaticook by year
Year
Wettest five days (Rx5day)
1949
40.4 mm (1.6 in)
1950
57.2 mm (2.3 in)
1951
76.7 mm (3.0 in)
1952
63.5 mm (2.5 in)
1953
68.6 mm (2.7 in)
1954
126.9 mm (5.0 in)
1955
59.5 mm (2.3 in)
1956
50.8 mm (2.0 in)
1957
77.4 mm (3.0 in)
1958
105.4 mm (4.1 in)
1959
86.8 mm (3.4 in)
1960
73.9 mm (2.9 in)
1961
63.2 mm (2.5 in)
1962
66.8 mm (2.6 in)
1963
62.0 mm (2.4 in)
1964
60.9 mm (2.4 in)
1965
80.3 mm (3.2 in)
1966
105.7 mm (4.2 in)
1967
76.9 mm (3.0 in)
1968
81.3 mm (3.2 in)
1969
55.8 mm (2.2 in)
1970
71.2 mm (2.8 in)
1971
68.6 mm (2.7 in)
1972
53.2 mm (2.1 in)
1973
64.3 mm (2.5 in)
1974
66.0 mm (2.6 in)
1975
110.7 mm (4.4 in)
1976
72.8 mm (2.9 in)
1977
65.2 mm (2.6 in)
1978
68.8 mm (2.7 in)
1979
68.6 mm (2.7 in)
1980
51.0 mm (2.0 in)
1981
98.4 mm (3.9 in)
1982
77.0 mm (3.0 in)
1983
66.6 mm (2.6 in)
Longest dry spell (CDD)
The longest dry spell of the year at Coaticook, 1949 to 1983. The record is 27 days in 1959, marked on the chart; the median year is 14 days.
Longest dry spell (CDD) at Coaticook by year
Year
Longest dry spell (CDD)
1949
8 days
1950
24 days
1951
15 days
1952
14 days
1953
23 days
1954
15 days
1955
12 days
1956
21 days
1957
20 days
1958
13 days
1959
27 days
1960
12 days
1961
20 days
1962
16 days
1963
14 days
1964
15 days
1965
20 days
1966
15 days
1967
11 days
1968
11 days
1969
9 days
1970
13 days
1971
12 days
1972
11 days
1973
14 days
1974
12 days
1975
15 days
1976
20 days
1977
12 days
1978
9 days
1979
14 days
1980
11 days
1981
12 days
1982
10 days
1983
8 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 Coaticook falls on 27 May and the median first autumn frost on 17 September, which leaves a median of 114 days between them.
Fitted over all years, the growing season changes by +12.2 days per decade at this station.
Frost dates and growing season at Coaticook
Measure
Median, all years
Earliest period
Recent period (1950 to 1983)
Recent against earliest
Fitted trend
Last spring frost
27 May
n/a
27 May
n/a
-4.2 days per decade
First autumn frost
17 September
n/a
17 September
n/a
+7.9 days per decade
Growing days
114 days
n/a
114 days
n/a
+12.2 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
32 years, 1950 to 1983
A day with at least 43.1 mm (1.7 in) of rain is expected about once in 2 years. A day with at least 115.8 mm (4.6 in) of rain is expected about once in 100 years.
Rainfall return levels at Coaticook: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
43.1 mm (1.7 in)
5 years
55.8 mm (2.2 in)
10 years
66.4 mm (2.6 in)
25 years
83.0 mm (3.3 in)
50 years
98.0 mm (3.9 in)
Longer than the 32 years of record
100 years
115.8 mm (4.6 in)
Longer than the 32 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, 32 years of values from 1950 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: 113.0 mm (4.4 in) in 1954; 86.6 mm (3.4 in) in 1975; 69.3 mm (2.7 in) in 1951.
Download the Data
Data for Coaticook standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Coaticook 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.