Record envelope, standing records and threshold days for Moncton A (CA008103200), New Brunswick, Canada, with 74 years of record.
Key Facts for Moncton A
Moncton A (CA008103200) is a weather station in New Brunswick, Canada at 46.10 latitude and -64.68 longitude, 71 m (233 ft) above sea level.
The station reports from 1939 to 2012, 74 years of record.
1,464 records set at Moncton A still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
Moncton A set a daily record high maximum temperature of 12.8 C (55.0 F) on 15 December 1983.
About the Station
Location: New Brunswick, Canada, 46.10 latitude, -64.68 longitude.
Elevation: 71 m (233 ft).
Period of record: 1939 to 2012, 74 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 Moncton A. 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 Moncton A, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
14.2 C (57.6 F)
-32.2 C (-26.0 F)
n/a
n/a
Feb
13.9 C (57.0 F)
-31.7 C (-25.1 F)
n/a
n/a
Mar
18.9 C (66.0 F)
-26.1 C (-15.0 F)
n/a
n/a
Apr
28.3 C (82.9 F)
-16.1 C (3.0 F)
n/a
n/a
May
34.2 C (93.6 F)
-6.1 C (21.0 F)
n/a
n/a
Jun
34.4 C (93.9 F)
-2.1 C (28.2 F)
n/a
n/a
Jul
35.6 C (96.1 F)
2.2 C (36.0 F)
n/a
n/a
Aug
37.2 C (99.0 F)
0.6 C (33.1 F)
n/a
n/a
Sep
33.3 C (91.9 F)
-3.3 C (26.1 F)
n/a
n/a
Oct
26.1 C (79.0 F)
-10.0 C (14.0 F)
n/a
n/a
Nov
22.9 C (73.2 F)
-17.4 C (0.7 F)
n/a
n/a
Dec
17.8 C (64.0 F)
-28.4 C (-19.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Moncton A still stand. 1979 holds the most, with 55.
Standing records at Moncton A by the year they were set
Year set
Standing records
1939
4
1940
36
1941
29
1942
48
1943
42
1944
48
1945
42
1946
41
1947
52
1948
34
1949
30
1950
54
1951
31
1952
18
1953
37
1954
32
1955
22
1956
33
1957
38
1958
22
1959
32
1960
24
1961
33
1962
33
1963
36
1964
22
1965
26
1966
21
1967
35
1968
29
1969
22
1970
27
1971
30
1972
45
1973
30
1974
23
1975
33
1976
35
1977
29
1978
24
1979
55
1980
20
1981
34
1982
44
1983
29
Wettest Day of Each Month
Apr: 131.8 mm (5.2 in)
The wettest day on record for each calendar month at Moncton A. The most was 131.8 mm (5.2 in) on 1 April 1962.
Record daily precipitation for each month at Moncton A
Month
Record daily precipitation (mm)
Date
Jan
73.6 mm (2.9 in)
14 January 1978
Feb
71.1 mm (2.8 in)
18 February 1955
Mar
50.0 mm (2.0 in)
17 March 1976
Apr
131.8 mm (5.2 in)
1 April 1962
May
52.3 mm (2.1 in)
12 May 1967
Jun
61.7 mm (2.4 in)
13 June 1968
Jul
77.0 mm (3.0 in)
22 July 1983
Aug
66.0 mm (2.6 in)
25 August 1968
Sep
99.6 mm (3.9 in)
16 September 1940
Oct
103.1 mm (4.1 in)
21 October 1968
Nov
62.5 mm (2.5 in)
8 November 1968
Dec
61.0 mm (2.4 in)
4 December 1967
Period of Record Coverage
1939 to 1983
Complete yearUnder 90 percent of days
45 years of record at Moncton A, 1939 to 1983. 1 years have data for under 90 percent of days and are left out of rankings: 1939.
Cooler than the station meanWarmer than the station mean
One stripe for each of 44 complete years at Moncton A, 1940 to 1983. Blue stripes are years cooler than the station's own mean of 5.2 C (41.4 F); red stripes are warmer. The coolest year was 1972, at 3.9 C (38.9 F), and the warmest was 1953, at 6.7 C (44.0 F). The strongest colour marks a difference of 1.5 C (2.7 F).
Annual mean temperature at Moncton A as warming stripes, 1940 to 1983
Year
Annual mean temperature
Difference from the station mean
1940
4.3 C
-0.93 C
1941
5.0 C
-0.18 C
1942
5.9 C
+0.65 C
1943
4.6 C
-0.57 C
1944
5.5 C
+0.25 C
1945
5.3 C
+0.13 C
1946
5.5 C
+0.31 C
1947
5.7 C
+0.49 C
1948
4.8 C
-0.46 C
1949
6.2 C
+0.94 C
1950
5.3 C
+0.12 C
1951
6.0 C
+0.75 C
1952
5.8 C
+0.55 C
1953
6.7 C
+1.47 C
1954
5.7 C
+0.52 C
1955
5.1 C
-0.15 C
1956
4.8 C
-0.41 C
1957
5.6 C
+0.37 C
1958
5.3 C
+0.13 C
1959
5.6 C
+0.42 C
1960
6.1 C
+0.92 C
1961
5.4 C
+0.19 C
1962
4.4 C
-0.80 C
1963
4.4 C
-0.81 C
1964
4.7 C
-0.51 C
1965
4.6 C
-0.58 C
1966
6.0 C
+0.75 C
1967
4.4 C
-0.79 C
1968
4.8 C
-0.40 C
1969
5.8 C
+0.60 C
1970
4.7 C
-0.56 C
1971
4.9 C
-0.33 C
1972
3.9 C
-1.35 C
1973
5.8 C
+0.54 C
1974
4.5 C
-0.69 C
1975
4.9 C
-0.27 C
1976
5.0 C
-0.20 C
1977
5.1 C
-0.13 C
1978
4.4 C
-0.86 C
1979
5.9 C
+0.67 C
1980
4.4 C
-0.81 C
1981
5.9 C
+0.70 C
1982
4.7 C
-0.52 C
1983
5.9 C
+0.67 C
The fitted trend in annual mean temperature here over 1940 to 1983 is -0.1 C (-0.3 to 0.1) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.2 F (-0.5 to 0.1) per decade. The slope is a straight line fitted to 44 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Moncton A
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.1 C (-0.3 to 0.1) per decade
-0.2 F (-0.5 to 0.1) per decade
1940 to 1983
44
Not clearly different from zero
Mean daily maximum
-0.1 C (-0.2 to 0.1) per decade
-0.1 F (-0.4 to 0.2) per decade
1940 to 1983
44
Not clearly different from zero
Mean daily minimum
-0.15 C (-0.33 to 0.04) per decade
-0.3 F (-0.6 to 0.1) per decade
1940 to 1983
44
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
1939 to 1983
Yearly extremes at Moncton A: 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)
1944
31.7 C (89.1 F)
45
Coldest night (TNn)
-32.2 C (-26.0 F)
1957
-27.2 C (-17.0 F)
45
Wettest day (Rx1day)
131.8 mm (5.2 in)
1962
53.1 mm (2.1 in)
45
Wettest five days (Rx5day)
140.7 mm (5.5 in)
1962
83.8 mm (3.3 in)
45
Longest dry spell (CDD)
26 days
1947
14 days
45
Hottest day (TXx)
The hottest day of the year at Moncton A, 1939 to 1983. The record is 37.2 C (99.0 F) in 1944, marked on the chart; the median year is 31.7 C (89.1 F).
Hottest day (TXx) at Moncton A by year
Year
Hottest day (TXx)
1939
13.3 C (55.9 F)
1940
31.7 C (89.1 F)
1941
33.3 C (91.9 F)
1942
33.3 C (91.9 F)
1943
32.8 C (91.0 F)
1944
37.2 C (99.0 F)
1945
33.3 C (91.9 F)
1946
33.9 C (93.0 F)
1947
33.9 C (93.0 F)
1948
31.1 C (88.0 F)
1949
35.6 C (96.1 F)
1950
30.6 C (87.1 F)
1951
29.4 C (84.9 F)
1952
34.4 C (93.9 F)
1953
30.6 C (87.1 F)
1954
29.4 C (84.9 F)
1955
32.8 C (91.0 F)
1956
31.1 C (88.0 F)
1957
31.1 C (88.0 F)
1958
28.9 C (84.0 F)
1959
31.7 C (89.1 F)
1960
33.9 C (93.0 F)
1961
31.1 C (88.0 F)
1962
31.7 C (89.1 F)
1963
32.8 C (91.0 F)
1964
31.1 C (88.0 F)
1965
32.8 C (91.0 F)
1966
29.4 C (84.9 F)
1967
31.7 C (89.1 F)
1968
32.8 C (91.0 F)
1969
31.7 C (89.1 F)
1970
32.2 C (90.0 F)
1971
29.4 C (84.9 F)
1972
31.7 C (89.1 F)
1973
30.6 C (87.1 F)
1974
31.7 C (89.1 F)
1975
33.3 C (91.9 F)
1976
33.3 C (91.9 F)
1977
34.2 C (93.6 F)
1978
32.6 C (90.7 F)
1979
30.9 C (87.6 F)
1980
31.8 C (89.2 F)
1981
30.3 C (86.5 F)
1982
33.0 C (91.4 F)
1983
33.8 C (92.8 F)
Coldest night (TNn)
The coldest night of the year at Moncton A, 1939 to 1983. The record is -32.2 C (-26.0 F) in 1957, marked on the chart; the median year is -27.2 C (-17.0 F).
Coldest night (TNn) at Moncton A by year
Year
Coldest night (TNn)
1939
-18.9 C (-2.0 F)
1940
-25.0 C (-13.0 F)
1941
-25.0 C (-13.0 F)
1942
-28.3 C (-18.9 F)
1943
-30.6 C (-23.1 F)
1944
-27.2 C (-17.0 F)
1945
-27.8 C (-18.0 F)
1946
-26.7 C (-16.1 F)
1947
-25.6 C (-14.1 F)
1948
-31.1 C (-24.0 F)
1949
-24.4 C (-11.9 F)
1950
-27.8 C (-18.0 F)
1951
-30.0 C (-22.0 F)
1952
-26.7 C (-16.1 F)
1953
-20.6 C (-5.1 F)
1954
-27.8 C (-18.0 F)
1955
-28.3 C (-18.9 F)
1956
-24.4 C (-11.9 F)
1957
-32.2 C (-26.0 F)
1958
-23.3 C (-9.9 F)
1959
-25.6 C (-14.1 F)
1960
-25.6 C (-14.1 F)
1961
-28.3 C (-18.9 F)
1962
-31.7 C (-25.1 F)
1963
-25.0 C (-13.0 F)
1964
-22.2 C (-8.0 F)
1965
-26.1 C (-15.0 F)
1966
-27.2 C (-17.0 F)
1967
-28.9 C (-20.0 F)
1968
-27.2 C (-17.0 F)
1969
-22.2 C (-8.0 F)
1970
-27.2 C (-17.0 F)
1971
-30.0 C (-22.0 F)
1972
-27.8 C (-18.0 F)
1973
-27.8 C (-18.0 F)
1974
-28.9 C (-20.0 F)
1975
-28.3 C (-18.9 F)
1976
-31.1 C (-24.0 F)
1977
-26.4 C (-15.5 F)
1978
-26.4 C (-15.5 F)
1979
-25.3 C (-13.5 F)
1980
-28.4 C (-19.1 F)
1981
-30.6 C (-23.1 F)
1982
-31.8 C (-25.2 F)
1983
-24.7 C (-12.5 F)
Wettest day (Rx1day)
The wettest day of the year at Moncton A, 1939 to 1983. The record is 131.8 mm (5.2 in) in 1962, marked on the chart; the median year is 53.1 mm (2.1 in).
Wettest day (Rx1day) at Moncton A by year
Year
Wettest day (Rx1day)
1939
25.4 mm (1.0 in)
1940
99.6 mm (3.9 in)
1941
53.1 mm (2.1 in)
1942
48.3 mm (1.9 in)
1943
45.5 mm (1.8 in)
1944
66.0 mm (2.6 in)
1945
38.6 mm (1.5 in)
1946
47.0 mm (1.9 in)
1947
53.1 mm (2.1 in)
1948
51.1 mm (2.0 in)
1949
32.5 mm (1.3 in)
1950
65.8 mm (2.6 in)
1951
38.1 mm (1.5 in)
1952
58.2 mm (2.3 in)
1953
56.4 mm (2.2 in)
1954
45.2 mm (1.8 in)
1955
71.1 mm (2.8 in)
1956
55.4 mm (2.2 in)
1957
40.6 mm (1.6 in)
1958
47.2 mm (1.9 in)
1959
62.2 mm (2.4 in)
1960
42.7 mm (1.7 in)
1961
53.1 mm (2.1 in)
1962
131.8 mm (5.2 in)
1963
83.8 mm (3.3 in)
1964
53.1 mm (2.1 in)
1965
30.0 mm (1.2 in)
1966
50.0 mm (2.0 in)
1967
61.0 mm (2.4 in)
1968
103.1 mm (4.1 in)
1969
36.8 mm (1.4 in)
1970
55.4 mm (2.2 in)
1971
46.7 mm (1.8 in)
1972
66.8 mm (2.6 in)
1973
57.4 mm (2.3 in)
1974
36.6 mm (1.4 in)
1975
42.4 mm (1.7 in)
1976
73.9 mm (2.9 in)
1977
58.3 mm (2.3 in)
1978
73.6 mm (2.9 in)
1979
73.6 mm (2.9 in)
1980
48.6 mm (1.9 in)
1981
56.8 mm (2.2 in)
1982
68.7 mm (2.7 in)
1983
77.0 mm (3.0 in)
Wettest five days (Rx5day)
The wettest five days of the year at Moncton A, 1939 to 1983. The record is 140.7 mm (5.5 in) in 1962, marked on the chart; the median year is 83.8 mm (3.3 in).
Wettest five days (Rx5day) at Moncton A by year
Year
Wettest five days (Rx5day)
1939
35.3 mm (1.4 in)
1940
128.6 mm (5.1 in)
1941
69.1 mm (2.7 in)
1942
79.5 mm (3.1 in)
1943
65.2 mm (2.6 in)
1944
81.0 mm (3.2 in)
1945
74.0 mm (2.9 in)
1946
83.8 mm (3.3 in)
1947
86.8 mm (3.4 in)
1948
99.9 mm (3.9 in)
1949
58.2 mm (2.3 in)
1950
86.9 mm (3.4 in)
1951
65.6 mm (2.6 in)
1952
62.4 mm (2.5 in)
1953
64.8 mm (2.6 in)
1954
79.0 mm (3.1 in)
1955
73.9 mm (2.9 in)
1956
112.9 mm (4.4 in)
1957
57.4 mm (2.3 in)
1958
57.4 mm (2.3 in)
1959
80.5 mm (3.2 in)
1960
70.1 mm (2.8 in)
1961
104.7 mm (4.1 in)
1962
140.7 mm (5.5 in)
1963
136.6 mm (5.4 in)
1964
83.9 mm (3.3 in)
1965
71.7 mm (2.8 in)
1966
82.8 mm (3.3 in)
1967
85.4 mm (3.4 in)
1968
120.0 mm (4.7 in)
1969
76.1 mm (3.0 in)
1970
87.1 mm (3.4 in)
1971
104.1 mm (4.1 in)
1972
106.6 mm (4.2 in)
1973
134.7 mm (5.3 in)
1974
65.5 mm (2.6 in)
1975
71.7 mm (2.8 in)
1976
89.3 mm (3.5 in)
1977
86.3 mm (3.4 in)
1978
124.6 mm (4.9 in)
1979
130.0 mm (5.1 in)
1980
73.9 mm (2.9 in)
1981
100.8 mm (4.0 in)
1982
86.8 mm (3.4 in)
1983
91.6 mm (3.6 in)
Longest dry spell (CDD)
The longest dry spell of the year at Moncton A, 1939 to 1983. The record is 26 days in 1947, marked on the chart; the median year is 14 days.
Longest dry spell (CDD) at Moncton A by year
Year
Longest dry spell (CDD)
1939
7 days
1940
14 days
1941
11 days
1942
11 days
1943
13 days
1944
14 days
1945
13 days
1946
17 days
1947
26 days
1948
14 days
1949
14 days
1950
16 days
1951
15 days
1952
14 days
1953
15 days
1954
16 days
1955
13 days
1956
15 days
1957
14 days
1958
13 days
1959
12 days
1960
17 days
1961
19 days
1962
18 days
1963
20 days
1964
14 days
1965
15 days
1966
12 days
1967
14 days
1968
11 days
1969
11 days
1970
22 days
1971
13 days
1972
10 days
1973
14 days
1974
12 days
1975
11 days
1976
12 days
1977
12 days
1978
23 days
1979
18 days
1980
12 days
1981
16 days
1982
17 days
1983
12 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
44 years with a frost
Across 44 years with a frost, the median last spring frost at Moncton A falls on 23 May and the median first autumn frost on 22 September, which leaves a median of 123 days between them.
Fitted over all years, the growing season changes by +1.3 days per decade at this station.
Frost dates and growing season at Moncton A
Measure
Median, all years
Earliest period
Recent period (1954 to 1983)
Recent against earliest
Fitted trend
Last spring frost
23 May
n/a
24 May
n/a
+0.4 days per decade
First autumn frost
22 September
n/a
22 September
n/a
+1.7 days per decade
Growing days
123 days
n/a
123 days
n/a
+1.3 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
44 years, 1940 to 1983
A day with at least 53.8 mm (2.1 in) of rain is expected about once in 2 years. A day with at least 127.6 mm (5.0 in) of rain is expected about once in 100 years.
Rainfall return levels at Moncton A: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
53.8 mm (2.1 in)
5 years
70.4 mm (2.8 in)
10 years
82.5 mm (3.2 in)
25 years
99.3 mm (3.9 in)
50 years
113.0 mm (4.4 in)
Longer than the 44 years of record
100 years
127.6 mm (5.0 in)
Longer than the 44 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, 44 years of values from 1940 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: 131.8 mm (5.2 in) in 1962; 103.1 mm (4.1 in) in 1968; 99.6 mm (3.9 in) in 1940.
Station Changes
1 suspected
One change was suspected in the annual mean temperature of Moncton A, at 1967. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1967 ran 0.2 C (0.3 F) lower than in the years before (possible change).
Suspected changes in the annual mean temperature at Moncton A, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1967
-0.1
-0.3
possible
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 Moncton A standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Moncton A 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.