Record envelope, standing records and threshold days for Grand Manan (CA008101920), New Brunswick, Canada, with 92 years of record.
Key Facts for Grand Manan
Grand Manan (CA008101920) is a weather station in New Brunswick, Canada at 44.73 latitude and -66.77 longitude, 8 m (26 ft) above sea level.
The station reports from 1874 to 1965, 92 years of record.
1,464 records set at Grand Manan still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
Grand Manan set a daily record low maximum temperature of 0.0 C (32.0 F) on 29 March 1965.
About the Station
Location: New Brunswick, Canada, 44.73 latitude, -66.77 longitude.
Elevation: 8 m (26 ft).
Period of record: 1874 to 1965, 92 years.
Eligible elements: tmax, tmin, prcp, snow.
Daily Record Envelope and 2026
0 days at or beyond a record
Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Grand Manan. 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 Grand Manan, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
16.1 C (61.0 F)
-30.6 C (-23.1 F)
n/a
n/a
Feb
15.0 C (59.0 F)
-25.0 C (-13.0 F)
n/a
n/a
Mar
15.6 C (60.1 F)
-23.9 C (-11.0 F)
n/a
n/a
Apr
23.9 C (75.0 F)
-10.6 C (12.9 F)
n/a
n/a
May
28.9 C (84.0 F)
-3.3 C (26.1 F)
n/a
n/a
Jun
32.8 C (91.0 F)
1.7 C (35.1 F)
n/a
n/a
Jul
33.3 C (91.9 F)
4.4 C (39.9 F)
n/a
n/a
Aug
32.2 C (90.0 F)
4.4 C (39.9 F)
n/a
n/a
Sep
31.7 C (89.1 F)
-1.7 C (28.9 F)
n/a
n/a
Oct
26.1 C (79.0 F)
-3.9 C (25.0 F)
n/a
n/a
Nov
18.3 C (64.9 F)
-16.7 C (1.9 F)
n/a
n/a
Dec
16.1 C (61.0 F)
-27.2 C (-17.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Grand Manan still stand. 1884 holds the most, with 67.
Standing records at Grand Manan by the year they were set
Year set
Standing records
1883
26
1884
67
1885
65
1886
53
1887
55
1888
57
1889
41
1890
43
1891
48
1892
44
1893
46
1894
43
1895
47
1896
41
1897
29
1898
41
1899
33
1900
59
1901
37
1902
33
1903
52
1904
41
1905
39
1906
44
1907
32
1908
54
1909
45
1910
26
1911
53
1912
16
1962
24
1963
67
1964
58
1965
5
Wettest Day of Each Month
Jun: 162.1 mm (6.4 in)
The wettest day on record for each calendar month at Grand Manan. The most was 162.1 mm (6.4 in) on 17 June 1910.
Record daily precipitation for each month at Grand Manan
Month
Record daily precipitation (mm)
Date
Jan
88.1 mm (3.5 in)
18 January 1891
Feb
58.4 mm (2.3 in)
1 February 1898
Mar
88.9 mm (3.5 in)
31 March 1878
Apr
52.8 mm (2.1 in)
24 April 1898
May
62.5 mm (2.5 in)
5 May 1903
Jun
162.1 mm (6.4 in)
17 June 1910
Jul
86.1 mm (3.4 in)
14 July 1883
Aug
78.0 mm (3.1 in)
21 August 1893
Sep
82.3 mm (3.2 in)
27 September 1909
Oct
136.1 mm (5.4 in)
11 October 1900
Nov
112.5 mm (4.4 in)
15 November 1895
Dec
71.9 mm (2.8 in)
3 December 1905
Period of Record Coverage
1883 to 1965
Complete yearUnder 90 percent of days
34 years of record at Grand Manan, 1883 to 1965. 4 years have data for under 90 percent of days and are left out of rankings: 1883, 1912, 1962, 1965.
Cooler than the station meanWarmer than the station mean
One stripe for each of 29 complete years at Grand Manan, 1884 to 1964. Blue stripes are years cooler than the station's own mean of 6.2 C (43.2 F); red stripes are warmer. The coolest year was 1888, at 4.8 C (40.7 F), and the warmest was 1910, at 7.2 C (44.9 F). The strongest colour marks a difference of 1.5 C (2.7 F).
Annual mean temperature at Grand Manan as warming stripes, 1884 to 1964
Year
Annual mean temperature
Difference from the station mean
1884
5.6 C
-0.61 C
1885
5.3 C
-0.97 C
1886
6.1 C
-0.19 C
1887
5.5 C
-0.76 C
1888
4.8 C
-1.41 C
1889
6.8 C
+0.50 C
1890
5.4 C
-0.84 C
1891
6.5 C
+0.21 C
1893
5.7 C
-0.51 C
1894
6.4 C
+0.13 C
1895
6.7 C
+0.49 C
1896
6.1 C
-0.16 C
1897
6.3 C
+0.07 C
1898
6.9 C
+0.65 C
1899
6.4 C
+0.19 C
1900
7.0 C
+0.76 C
1901
6.7 C
+0.45 C
1902
7.1 C
+0.83 C
1903
6.4 C
+0.19 C
1904
5.1 C
-1.16 C
1905
5.6 C
-0.62 C
1906
6.7 C
+0.43 C
1907
5.9 C
-0.36 C
1908
7.1 C
+0.86 C
1909
6.9 C
+0.66 C
1910
7.2 C
+0.92 C
1911
6.8 C
+0.50 C
1963
6.2 C
-0.05 C
1964
6.0 C
-0.23 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
1874 to 1965
Yearly extremes at Grand Manan: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
33.3 C (91.9 F)
1963
28.6 C (83.5 F)
34
Coldest night (TNn)
-30.6 C (-23.1 F)
1890
-23.0 C (-9.5 F)
34
Wettest day (Rx1day)
162.1 mm (6.4 in)
1910
59.5 mm (2.3 in)
38
Wettest five days (Rx5day)
271.0 mm (10.7 in)
1900
93.6 mm (3.7 in)
38
Longest dry spell (CDD)
32 days
1911
15 days
38
Hottest day (TXx)
The hottest day of the year at Grand Manan, 1874 to 1965. The record is 33.3 C (91.9 F) in 1963, marked on the chart; the median year is 28.6 C (83.5 F).
Hottest day (TXx) at Grand Manan by year
Year
Hottest day (TXx)
1874
n/a
1875
n/a
1877
n/a
1878
n/a
1883
27.2 C (81.0 F)
1884
30.6 C (87.1 F)
1885
25.6 C (78.1 F)
1886
30.6 C (87.1 F)
1887
30.0 C (86.0 F)
1888
30.0 C (86.0 F)
1889
27.8 C (82.0 F)
1890
25.6 C (78.1 F)
1891
27.2 C (81.0 F)
1892
29.4 C (84.9 F)
1893
30.6 C (87.1 F)
1894
30.6 C (87.1 F)
1895
27.8 C (82.0 F)
1896
28.9 C (84.0 F)
1897
30.0 C (86.0 F)
1898
31.7 C (89.1 F)
1899
27.8 C (82.0 F)
1900
32.2 C (90.0 F)
1901
31.1 C (88.0 F)
1902
28.3 C (82.9 F)
1903
27.8 C (82.0 F)
1904
28.3 C (82.9 F)
1905
28.3 C (82.9 F)
1906
31.1 C (88.0 F)
1907
28.3 C (82.9 F)
1908
31.1 C (88.0 F)
1909
30.6 C (87.1 F)
1910
27.2 C (81.0 F)
1911
28.9 C (84.0 F)
1912
15.0 C (59.0 F)
1962
25.6 C (78.1 F)
1963
33.3 C (91.9 F)
1964
26.7 C (80.1 F)
1965
10.0 C (50.0 F)
Coldest night (TNn)
The coldest night of the year at Grand Manan, 1874 to 1965. The record is -30.6 C (-23.1 F) in 1890, marked on the chart; the median year is -23.0 C (-9.5 F).
Coldest night (TNn) at Grand Manan by year
Year
Coldest night (TNn)
1874
n/a
1875
n/a
1877
n/a
1878
n/a
1883
-25.0 C (-13.0 F)
1884
-27.2 C (-17.0 F)
1885
-24.4 C (-11.9 F)
1886
-24.4 C (-11.9 F)
1887
-25.0 C (-13.0 F)
1888
-23.3 C (-9.9 F)
1889
-23.9 C (-11.0 F)
1890
-30.6 C (-23.1 F)
1891
-22.2 C (-8.0 F)
1892
-20.6 C (-5.1 F)
1893
-21.1 C (-6.0 F)
1894
-24.4 C (-11.9 F)
1895
-22.8 C (-9.0 F)
1896
-25.0 C (-13.0 F)
1897
-24.4 C (-11.9 F)
1898
-21.7 C (-7.1 F)
1899
-21.1 C (-6.0 F)
1900
-22.2 C (-8.0 F)
1901
-23.9 C (-11.0 F)
1902
-26.1 C (-15.0 F)
1903
-23.9 C (-11.0 F)
1904
-23.3 C (-9.9 F)
1905
-21.1 C (-6.0 F)
1906
-21.1 C (-6.0 F)
1907
-22.8 C (-9.0 F)
1908
-23.9 C (-11.0 F)
1909
-19.4 C (-2.9 F)
1910
-20.0 C (-4.0 F)
1911
-22.8 C (-9.0 F)
1912
-22.8 C (-9.0 F)
1962
-18.9 C (-2.0 F)
1963
-21.7 C (-7.1 F)
1964
-21.7 C (-7.1 F)
1965
-24.4 C (-11.9 F)
Wettest day (Rx1day)
The wettest day of the year at Grand Manan, 1874 to 1965. The record is 162.1 mm (6.4 in) in 1910, marked on the chart; the median year is 59.5 mm (2.3 in).
Wettest day (Rx1day) at Grand Manan by year
Year
Wettest day (Rx1day)
1874
21.6 mm (0.9 in)
1875
41.4 mm (1.6 in)
1877
59.2 mm (2.3 in)
1878
88.9 mm (3.5 in)
1883
86.1 mm (3.4 in)
1884
55.4 mm (2.2 in)
1885
47.0 mm (1.9 in)
1886
45.0 mm (1.8 in)
1887
65.0 mm (2.6 in)
1888
75.7 mm (3.0 in)
1889
49.8 mm (2.0 in)
1890
41.9 mm (1.6 in)
1891
88.1 mm (3.5 in)
1892
52.6 mm (2.1 in)
1893
78.0 mm (3.1 in)
1894
41.1 mm (1.6 in)
1895
112.5 mm (4.4 in)
1896
93.5 mm (3.7 in)
1897
50.3 mm (2.0 in)
1898
69.6 mm (2.7 in)
1899
66.5 mm (2.6 in)
1900
136.1 mm (5.4 in)
1901
74.9 mm (2.9 in)
1902
69.1 mm (2.7 in)
1903
62.5 mm (2.5 in)
1904
54.6 mm (2.1 in)
1905
71.9 mm (2.8 in)
1906
54.9 mm (2.2 in)
1907
52.3 mm (2.1 in)
1908
57.2 mm (2.3 in)
1909
82.3 mm (3.2 in)
1910
162.1 mm (6.4 in)
1911
44.5 mm (1.8 in)
1912
40.4 mm (1.6 in)
1962
59.7 mm (2.4 in)
1963
63.8 mm (2.5 in)
1964
49.3 mm (1.9 in)
1965
38.9 mm (1.5 in)
Wettest five days (Rx5day)
The wettest five days of the year at Grand Manan, 1874 to 1965. The record is 271.0 mm (10.7 in) in 1900, marked on the chart; the median year is 93.6 mm (3.7 in).
Wettest five days (Rx5day) at Grand Manan by year
Year
Wettest five days (Rx5day)
1874
22.9 mm (0.9 in)
1875
72.4 mm (2.9 in)
1877
61.7 mm (2.4 in)
1878
120.7 mm (4.8 in)
1883
86.1 mm (3.4 in)
1884
114.8 mm (4.5 in)
1885
87.4 mm (3.4 in)
1886
98.3 mm (3.9 in)
1887
102.1 mm (4.0 in)
1888
84.9 mm (3.3 in)
1889
69.4 mm (2.7 in)
1890
58.1 mm (2.3 in)
1891
107.7 mm (4.2 in)
1892
76.4 mm (3.0 in)
1893
96.8 mm (3.8 in)
1894
61.7 mm (2.4 in)
1895
125.4 mm (4.9 in)
1896
116.1 mm (4.6 in)
1897
74.4 mm (2.9 in)
1898
90.4 mm (3.6 in)
1899
75.2 mm (3.0 in)
1900
271.0 mm (10.7 in)
1901
101.1 mm (4.0 in)
1902
159.3 mm (6.3 in)
1903
119.4 mm (4.7 in)
1904
114.7 mm (4.5 in)
1905
122.5 mm (4.8 in)
1906
100.6 mm (4.0 in)
1907
71.1 mm (2.8 in)
1908
73.6 mm (2.9 in)
1909
176.3 mm (6.9 in)
1910
163.4 mm (6.4 in)
1911
52.4 mm (2.1 in)
1912
85.6 mm (3.4 in)
1962
96.9 mm (3.8 in)
1963
116.2 mm (4.6 in)
1964
87.9 mm (3.5 in)
1965
50.1 mm (2.0 in)
Longest dry spell (CDD)
The longest dry spell of the year at Grand Manan, 1874 to 1965. The record is 32 days in 1911, marked on the chart; the median year is 15 days.
Longest dry spell (CDD) at Grand Manan by year
Year
Longest dry spell (CDD)
1874
9 days
1875
15 days
1877
7 days
1878
18 days
1883
20 days
1884
10 days
1885
19 days
1886
27 days
1887
16 days
1888
14 days
1889
21 days
1890
16 days
1891
27 days
1892
25 days
1893
12 days
1894
13 days
1895
18 days
1896
17 days
1897
15 days
1898
22 days
1899
17 days
1900
14 days
1901
15 days
1902
13 days
1903
20 days
1904
14 days
1905
13 days
1906
23 days
1907
15 days
1908
21 days
1909
13 days
1910
17 days
1911
32 days
1912
8 days
1962
13 days
1963
14 days
1964
15 days
1965
11 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
29 years with a frost
Across 29 years with a frost, the median last spring frost at Grand Manan falls on 2 May and the median first autumn frost on 23 October, which leaves a median of 177 days between them.
Fitted over all years, the growing season changes by -5.4 days per decade at this station.
Frost dates and growing season at Grand Manan
Measure
Median, all years
Earliest period
Recent period (1884 to 1964)
Recent against earliest
Fitted trend
Last spring frost
2 May
n/a
2 May
n/a
+1.7 days per decade
First autumn frost
23 October
n/a
23 October
n/a
-3.7 days per decade
Growing days
177 days
n/a
177 days
n/a
-5.4 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
30 years, 1884 to 1964
A day with at least 60.8 mm (2.4 in) of rain is expected about once in 2 years. A day with at least 189.5 mm (7.5 in) of rain is expected about once in 100 years.
Rainfall return levels at Grand Manan: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
60.8 mm (2.4 in)
5 years
81.8 mm (3.2 in)
10 years
100.0 mm (3.9 in)
25 years
129.2 mm (5.1 in)
50 years
156.5 mm (6.2 in)
Longer than the 30 years of record
100 years
189.5 mm (7.5 in)
Longer than the 30 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, 30 years of values from 1884 to 1964.
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: 162.1 mm (6.4 in) in 1910; 136.1 mm (5.4 in) in 1900; 112.5 mm (4.4 in) in 1895.
Download the Data
Data for Grand Manan standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Grand Manan 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.