Record envelope, standing records and threshold days for McAdam (CA008102600), New Brunswick, Canada, with 105 years of record.
Key Facts for McAdam
McAdam (CA008102600) is a weather station in New Brunswick, Canada at 45.58 latitude and -67.33 longitude, 140 m (459 ft) above sea level.
The station reports from 1872 to 1976, 105 years of record.
1,464 records set at McAdam still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
McAdam set a daily record high minimum temperature of 17.2 C (63.0 F) on 25 June 1976.
About the Station
Location: New Brunswick, Canada, 45.58 latitude, -67.33 longitude.
Elevation: 140 m (459 ft).
Period of record: 1872 to 1976, 105 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 McAdam. 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 McAdam, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
12.2 C (54.0 F)
-38.3 C (-36.9 F)
n/a
n/a
Feb
12.2 C (54.0 F)
-40.6 C (-41.1 F)
n/a
n/a
Mar
22.2 C (72.0 F)
-32.8 C (-27.0 F)
n/a
n/a
Apr
28.9 C (84.0 F)
-19.4 C (-2.9 F)
n/a
n/a
May
33.3 C (91.9 F)
-9.4 C (15.1 F)
n/a
n/a
Jun
35.0 C (95.0 F)
-5.6 C (21.9 F)
n/a
n/a
Jul
35.0 C (95.0 F)
0.0 C (32.0 F)
n/a
n/a
Aug
37.8 C (100.0 F)
-2.2 C (28.0 F)
n/a
n/a
Sep
32.8 C (91.0 F)
-5.0 C (23.0 F)
n/a
n/a
Oct
30.0 C (86.0 F)
-10.6 C (12.9 F)
n/a
n/a
Nov
21.7 C (71.1 F)
-27.8 C (-18.0 F)
n/a
n/a
Dec
15.6 C (60.1 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 McAdam still stand. 1920 holds the most, with 67.
Standing records at McAdam by the year they were set
Year set
Standing records
1917
5
1918
35
1919
35
1920
67
1921
54
1922
23
1923
38
1924
19
1925
27
1926
17
1927
22
1928
16
1929
20
1930
24
1931
22
1932
25
1933
39
1934
33
1935
18
1936
35
1937
21
1938
31
1939
22
1940
13
1941
10
1942
33
1943
26
1944
22
1945
34
1946
30
1947
25
1948
25
1949
37
1950
27
1951
26
1952
19
1953
31
1954
24
1955
11
1956
27
1957
23
1958
11
1959
22
1960
13
1961
24
1962
20
1963
24
1964
28
1965
21
1966
19
1967
26
1968
15
1969
19
1970
18
1971
20
1972
18
1973
17
1974
23
1975
17
1976
18
All-Time Record Progression
5 new records
5 all-time records were set at McAdam between 9 August 1949 and 30 December 1962. Each dot is a new record.
When McAdam set new all-time records
Date
Kind
Detail
1949-08-09
Record high minimum temperature
Record high minimum temperature 22.8 C (73.0 F)
1954-09-11
Record daily precipitation
Record daily precipitation 143.8 mm (5.7 in)
1955-06-20
Record high minimum temperature
Record high minimum temperature 23.9 C (75.0 F)
1962-02-02
Record low minimum temperature
Record low minimum temperature -40.6 C (-41.1 F)
1962-12-30
Record daily snowfall
Record daily snowfall 91.4 cm (36.0 in)
Wettest Day of Each Month
Sep: 143.8 mm (5.7 in)
The wettest day on record for each calendar month at McAdam. The most was 143.8 mm (5.7 in) on 11 September 1954.
Record daily precipitation for each month at McAdam
Month
Record daily precipitation (mm)
Date
Jan
61.0 mm (2.4 in)
26 January 1971
Feb
104.6 mm (4.1 in)
3 February 1970
Mar
56.9 mm (2.2 in)
9 March 1942
Apr
82.6 mm (3.3 in)
28 April 1973
May
103.6 mm (4.1 in)
27 May 1961
Jun
105.2 mm (4.1 in)
27 June 1954
Jul
82.6 mm (3.3 in)
11 July 1970
Aug
72.4 mm (2.9 in)
17 August 1965
Sep
143.8 mm (5.7 in)
11 September 1954
Oct
125.7 mm (4.9 in)
28 October 1932
Nov
77.0 mm (3.0 in)
3 November 1966
Dec
91.4 mm (3.6 in)
30 December 1962
Period of Record Coverage
1917 to 1976
Complete yearUnder 90 percent of days
60 years of record at McAdam, 1917 to 1976. 8 years have data for under 90 percent of days and are left out of rankings: 1917, 1918, 1921, 1950, 1955, 1972, 1975, 1976.
Cooler than the station meanWarmer than the station mean
One stripe for each of 47 complete years at McAdam, 1920 to 1974. Blue stripes are years cooler than the station's own mean of 4.6 C (40.3 F); red stripes are warmer. The coolest year was 1920, at 2.0 C (35.6 F), and the warmest was 1953, at 6.5 C (43.8 F). The strongest colour marks a difference of 2.7 C (4.9 F).
Annual mean temperature at McAdam as warming stripes, 1920 to 1974
Year
Annual mean temperature
Difference from the station mean
1920
2.0 C
-2.63 C
1923
2.9 C
-1.72 C
1925
4.1 C
-0.55 C
1926
2.9 C
-1.77 C
1927
4.8 C
+0.14 C
1928
4.2 C
-0.47 C
1929
4.0 C
-0.61 C
1930
4.9 C
+0.21 C
1931
5.5 C
+0.89 C
1932
5.1 C
+0.48 C
1933
4.5 C
-0.15 C
1934
3.7 C
-0.98 C
1935
4.2 C
-0.49 C
1936
4.4 C
-0.23 C
1937
6.0 C
+1.31 C
1938
5.5 C
+0.89 C
1939
4.4 C
-0.24 C
1940
4.5 C
-0.14 C
1941
5.2 C
+0.60 C
1942
5.3 C
+0.65 C
1943
4.4 C
-0.25 C
1944
5.3 C
+0.65 C
1945
5.0 C
+0.32 C
1946
5.1 C
+0.43 C
1947
5.3 C
+0.64 C
1948
5.1 C
+0.44 C
1949
6.4 C
+1.73 C
1952
5.8 C
+1.17 C
1953
6.5 C
+1.90 C
1954
5.5 C
+0.87 C
1956
4.0 C
-0.67 C
1957
4.7 C
+0.07 C
1958
4.1 C
-0.56 C
1959
4.5 C
-0.17 C
1960
5.5 C
+0.89 C
1961
4.9 C
+0.22 C
1962
4.0 C
-0.68 C
1963
3.9 C
-0.72 C
1964
4.3 C
-0.35 C
1965
3.9 C
-0.79 C
1966
5.3 C
+0.66 C
1967
4.0 C
-0.67 C
1968
4.5 C
-0.19 C
1969
5.1 C
+0.46 C
1970
4.3 C
-0.34 C
1971
4.1 C
-0.52 C
1974
4.8 C
+0.14 C
The fitted trend in annual mean temperature here over 1920 to 1974 is 0.1 C (0.0 to 0.3) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.2 F (-0.1 to 0.5) per decade. The slope is a straight line fitted to 47 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at McAdam
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.1 C (0.0 to 0.3) per decade
0.2 F (-0.1 to 0.5) per decade
1920 to 1974
47
Not clearly different from zero
Mean daily maximum
0.14 C (0.01 to 0.26) per decade
0.24 F (0.02 to 0.47) per decade
1920 to 1974
47
Rise
Mean daily minimum
0.1 C (-0.1 to 0.3) per decade
0.2 F (-0.3 to 0.6) per decade
1920 to 1974
47
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
1872 to 1976
Yearly extremes at McAdam: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
37.8 C (100.0 F)
1935
32.8 C (91.0 F)
60
Coldest night (TNn)
-40.6 C (-41.1 F)
1962
-31.7 C (-25.1 F)
60
Wettest day (Rx1day)
143.8 mm (5.7 in)
1954
54.9 mm (2.2 in)
61
Wettest five days (Rx5day)
162.9 mm (6.4 in)
1954
75.0 mm (3.0 in)
61
Longest dry spell (CDD)
35 days
1919
15 days
61
Hottest day (TXx)
The hottest day of the year at McAdam, 1872 to 1976. The record is 37.8 C (100.0 F) in 1935, marked on the chart; the median year is 32.8 C (91.0 F).
Hottest day (TXx) at McAdam by year
Year
Hottest day (TXx)
1872
n/a
1917
4.4 C (39.9 F)
1918
32.2 C (90.0 F)
1919
33.9 C (93.0 F)
1920
33.3 C (91.9 F)
1921
33.3 C (91.9 F)
1922
31.7 C (89.1 F)
1923
33.3 C (91.9 F)
1924
31.1 C (88.0 F)
1925
31.7 C (89.1 F)
1926
32.2 C (90.0 F)
1927
30.6 C (87.1 F)
1928
33.3 C (91.9 F)
1929
33.3 C (91.9 F)
1930
33.3 C (91.9 F)
1931
33.3 C (91.9 F)
1932
32.8 C (91.0 F)
1933
30.0 C (86.0 F)
1934
31.1 C (88.0 F)
1935
37.8 C (100.0 F)
1936
28.3 C (82.9 F)
1937
33.9 C (93.0 F)
1938
33.3 C (91.9 F)
1939
33.3 C (91.9 F)
1940
32.2 C (90.0 F)
1941
33.9 C (93.0 F)
1942
32.8 C (91.0 F)
1943
33.3 C (91.9 F)
1944
35.6 C (96.1 F)
1945
33.3 C (91.9 F)
1946
32.8 C (91.0 F)
1947
34.4 C (93.9 F)
1948
31.7 C (89.1 F)
1949
33.9 C (93.0 F)
1950
30.6 C (87.1 F)
1951
30.0 C (86.0 F)
1952
35.0 C (95.0 F)
1953
32.2 C (90.0 F)
1954
31.7 C (89.1 F)
1955
32.8 C (91.0 F)
1956
32.8 C (91.0 F)
1957
32.2 C (90.0 F)
1958
30.0 C (86.0 F)
1959
33.3 C (91.9 F)
1960
33.9 C (93.0 F)
1961
31.1 C (88.0 F)
1962
32.2 C (90.0 F)
1963
34.4 C (93.9 F)
1964
32.8 C (91.0 F)
1965
32.2 C (90.0 F)
1966
31.1 C (88.0 F)
1967
32.2 C (90.0 F)
1968
32.8 C (91.0 F)
1969
33.3 C (91.9 F)
1970
32.8 C (91.0 F)
1971
31.7 C (89.1 F)
1972
30.6 C (87.1 F)
1973
32.8 C (91.0 F)
1974
31.1 C (88.0 F)
1975
35.6 C (96.1 F)
1976
32.2 C (90.0 F)
Coldest night (TNn)
The coldest night of the year at McAdam, 1872 to 1976. The record is -40.6 C (-41.1 F) in 1962, marked on the chart; the median year is -31.7 C (-25.1 F).
Coldest night (TNn) at McAdam by year
Year
Coldest night (TNn)
1872
n/a
1917
-33.3 C (-27.9 F)
1918
-34.4 C (-29.9 F)
1919
-30.6 C (-23.1 F)
1920
-35.0 C (-31.0 F)
1921
-33.9 C (-29.0 F)
1922
-37.8 C (-36.0 F)
1923
-36.1 C (-33.0 F)
1924
-34.4 C (-29.9 F)
1925
-36.7 C (-34.1 F)
1926
-30.6 C (-23.1 F)
1927
-29.4 C (-20.9 F)
1928
-27.2 C (-17.0 F)
1929
-30.0 C (-22.0 F)
1930
-33.3 C (-27.9 F)
1931
-33.3 C (-27.9 F)
1932
-27.2 C (-17.0 F)
1933
-36.1 C (-33.0 F)
1934
-35.0 C (-31.0 F)
1935
-33.9 C (-29.0 F)
1936
-26.7 C (-16.1 F)
1937
-28.9 C (-20.0 F)
1938
-28.3 C (-18.9 F)
1939
-27.8 C (-18.0 F)
1940
-31.7 C (-25.1 F)
1941
-28.9 C (-20.0 F)
1942
-32.8 C (-27.0 F)
1943
-35.6 C (-32.1 F)
1944
-28.9 C (-20.0 F)
1945
-28.3 C (-18.9 F)
1946
-27.8 C (-18.0 F)
1947
-31.1 C (-24.0 F)
1948
-34.4 C (-29.9 F)
1949
-28.3 C (-18.9 F)
1950
-29.4 C (-20.9 F)
1951
-33.3 C (-27.9 F)
1952
-28.3 C (-18.9 F)
1953
-23.9 C (-11.0 F)
1954
-29.4 C (-20.9 F)
1955
-30.6 C (-23.1 F)
1956
-30.0 C (-22.0 F)
1957
-35.0 C (-31.0 F)
1958
-29.4 C (-20.9 F)
1959
-30.0 C (-22.0 F)
1960
-28.9 C (-20.0 F)
1961
-34.4 C (-29.9 F)
1962
-40.6 C (-41.1 F)
1963
-33.3 C (-27.9 F)
1964
-28.9 C (-20.0 F)
1965
-33.9 C (-29.0 F)
1966
-34.4 C (-29.9 F)
1967
-35.0 C (-31.0 F)
1968
-32.2 C (-26.0 F)
1969
-28.9 C (-20.0 F)
1970
-32.8 C (-27.0 F)
1971
-38.3 C (-36.9 F)
1972
-34.4 C (-29.9 F)
1973
-30.6 C (-23.1 F)
1974
-31.7 C (-25.1 F)
1975
-31.1 C (-24.0 F)
1976
-34.4 C (-29.9 F)
Wettest day (Rx1day)
The wettest day of the year at McAdam, 1872 to 1976. The record is 143.8 mm (5.7 in) in 1954, marked on the chart; the median year is 54.9 mm (2.2 in).
Wettest day (Rx1day) at McAdam by year
Year
Wettest day (Rx1day)
1872
61.0 mm (2.4 in)
1917
20.3 mm (0.8 in)
1918
62.0 mm (2.4 in)
1919
44.7 mm (1.8 in)
1920
57.9 mm (2.3 in)
1921
38.1 mm (1.5 in)
1922
44.5 mm (1.8 in)
1923
75.2 mm (3.0 in)
1924
63.5 mm (2.5 in)
1925
78.7 mm (3.1 in)
1926
59.4 mm (2.3 in)
1927
66.5 mm (2.6 in)
1928
54.9 mm (2.2 in)
1929
48.3 mm (1.9 in)
1930
59.7 mm (2.4 in)
1931
54.1 mm (2.1 in)
1932
125.7 mm (4.9 in)
1933
82.6 mm (3.3 in)
1934
53.1 mm (2.1 in)
1935
61.2 mm (2.4 in)
1936
52.1 mm (2.1 in)
1937
42.4 mm (1.7 in)
1938
30.0 mm (1.2 in)
1939
45.5 mm (1.8 in)
1940
36.3 mm (1.4 in)
1941
56.9 mm (2.2 in)
1942
56.9 mm (2.2 in)
1943
65.0 mm (2.6 in)
1944
40.6 mm (1.6 in)
1945
53.3 mm (2.1 in)
1946
34.8 mm (1.4 in)
1947
44.5 mm (1.8 in)
1948
68.6 mm (2.7 in)
1949
48.3 mm (1.9 in)
1950
36.3 mm (1.4 in)
1951
49.3 mm (1.9 in)
1952
43.2 mm (1.7 in)
1953
48.8 mm (1.9 in)
1954
143.8 mm (5.7 in)
1955
38.1 mm (1.5 in)
1956
48.5 mm (1.9 in)
1957
40.9 mm (1.6 in)
1958
54.9 mm (2.2 in)
1959
65.8 mm (2.6 in)
1960
65.0 mm (2.6 in)
1961
103.6 mm (4.1 in)
1962
91.4 mm (3.6 in)
1963
56.1 mm (2.2 in)
1964
35.6 mm (1.4 in)
1965
72.4 mm (2.9 in)
1966
77.0 mm (3.0 in)
1967
59.7 mm (2.4 in)
1968
52.3 mm (2.1 in)
1969
70.4 mm (2.8 in)
1970
104.6 mm (4.1 in)
1971
61.0 mm (2.4 in)
1972
50.8 mm (2.0 in)
1973
82.6 mm (3.3 in)
1974
48.3 mm (1.9 in)
1975
42.7 mm (1.7 in)
1976
47.0 mm (1.9 in)
Wettest five days (Rx5day)
The wettest five days of the year at McAdam, 1872 to 1976. The record is 162.9 mm (6.4 in) in 1954, marked on the chart; the median year is 75.0 mm (3.0 in).
Wettest five days (Rx5day) at McAdam by year
Year
Wettest five days (Rx5day)
1872
77.0 mm (3.0 in)
1917
38.1 mm (1.5 in)
1918
89.7 mm (3.5 in)
1919
67.6 mm (2.7 in)
1920
99.3 mm (3.9 in)
1921
44.2 mm (1.7 in)
1922
139.7 mm (5.5 in)
1923
121.4 mm (4.8 in)
1924
70.4 mm (2.8 in)
1925
149.8 mm (5.9 in)
1926
85.1 mm (3.4 in)
1927
70.8 mm (2.8 in)
1928
60.2 mm (2.4 in)
1929
57.3 mm (2.3 in)
1930
76.5 mm (3.0 in)
1931
91.2 mm (3.6 in)
1932
143.7 mm (5.7 in)
1933
130.9 mm (5.2 in)
1934
71.5 mm (2.8 in)
1935
76.4 mm (3.0 in)
1936
60.2 mm (2.4 in)
1937
59.9 mm (2.4 in)
1938
42.3 mm (1.7 in)
1939
65.3 mm (2.6 in)
1940
44.7 mm (1.8 in)
1941
56.9 mm (2.2 in)
1942
72.1 mm (2.8 in)
1943
85.3 mm (3.4 in)
1944
40.6 mm (1.6 in)
1945
64.0 mm (2.5 in)
1946
52.1 mm (2.1 in)
1947
50.3 mm (2.0 in)
1948
26.7 mm (1.1 in)
1949
70.4 mm (2.8 in)
1950
47.0 mm (1.9 in)
1951
81.1 mm (3.2 in)
1952
61.0 mm (2.4 in)
1953
92.1 mm (3.6 in)
1954
162.9 mm (6.4 in)
1955
63.4 mm (2.5 in)
1956
63.8 mm (2.5 in)
1957
78.3 mm (3.1 in)
1958
95.6 mm (3.8 in)
1959
154.2 mm (6.1 in)
1960
105.6 mm (4.2 in)
1961
149.6 mm (5.9 in)
1962
101.5 mm (4.0 in)
1963
101.5 mm (4.0 in)
1964
72.6 mm (2.9 in)
1965
120.0 mm (4.7 in)
1966
116.4 mm (4.6 in)
1967
94.8 mm (3.7 in)
1968
72.1 mm (2.8 in)
1969
112.0 mm (4.4 in)
1970
127.5 mm (5.0 in)
1971
71.2 mm (2.8 in)
1972
65.0 mm (2.6 in)
1973
108.0 mm (4.3 in)
1974
74.2 mm (2.9 in)
1975
76.6 mm (3.0 in)
1976
75.0 mm (3.0 in)
Longest dry spell (CDD)
The longest dry spell of the year at McAdam, 1872 to 1976. The record is 35 days in 1919, marked on the chart; the median year is 15 days.
Longest dry spell (CDD) at McAdam by year
Year
Longest dry spell (CDD)
1872
22 days
1917
17 days
1918
31 days
1919
35 days
1920
25 days
1921
17 days
1922
16 days
1923
15 days
1924
16 days
1925
11 days
1926
15 days
1927
13 days
1928
11 days
1929
14 days
1930
18 days
1931
18 days
1932
13 days
1933
10 days
1934
11 days
1935
13 days
1936
12 days
1937
15 days
1938
14 days
1939
16 days
1940
12 days
1941
14 days
1942
16 days
1943
12 days
1944
18 days
1945
21 days
1946
13 days
1947
20 days
1948
13 days
1949
19 days
1950
17 days
1951
15 days
1952
15 days
1953
13 days
1954
16 days
1955
8 days
1956
18 days
1957
14 days
1958
15 days
1959
14 days
1960
11 days
1961
24 days
1962
13 days
1963
11 days
1964
14 days
1965
17 days
1966
19 days
1967
14 days
1968
12 days
1969
15 days
1970
15 days
1971
14 days
1972
12 days
1973
11 days
1974
14 days
1975
17 days
1976
14 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
47 years with a frost
Across 47 years with a frost, the median last spring frost at McAdam falls on 18 May and the median first autumn frost on 23 September, which leaves a median of 127 days between them.
Fitted over all years, the growing season changes by -1.7 days per decade at this station.
Frost dates and growing season at McAdam
Measure
Median, all years
Earliest period
Recent period (1940 to 1974)
Recent against earliest
Fitted trend
Last spring frost
18 May
n/a
18 May
n/a
+1.1 days per decade
First autumn frost
23 September
n/a
20 September
n/a
-0.6 days per decade
Growing days
127 days
n/a
122 days
n/a
-1.7 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, 1919 to 1974
A day with at least 59.2 mm (2.3 in) of rain is expected about once in 2 years. A day with at least 157.1 mm (6.2 in) of rain is expected about once in 100 years.
Rainfall return levels at McAdam: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
59.2 mm (2.3 in)
5 years
78.5 mm (3.1 in)
10 years
93.6 mm (3.7 in)
25 years
116.0 mm (4.6 in)
50 years
135.3 mm (5.3 in)
Longer than the 39 years of record
100 years
157.1 mm (6.2 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 1919 to 1974.
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: 143.8 mm (5.7 in) in 1954; 125.7 mm (4.9 in) in 1932; 104.6 mm (4.1 in) in 1970.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for McAdam standing records by year: CSV or JSON. Field meanings are on the data page.
Data for McAdam 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.