Record envelope, standing records and threshold days for Saint John A (CA008104900), New Brunswick, Canada, with 67 years of record.
Key Facts for Saint John A
Saint John A (CA008104900) is a weather station in New Brunswick, Canada at 45.32 latitude and -65.88 longitude, 109 m (358 ft) above sea level.
The station reports from 1946 to 2012, 67 years of record.
1,464 records set at Saint John A still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
Saint John A set a monthly record low maximum temperature of -18.5 C (-1.3 F) on 20 December 1983.
About the Station
Location: New Brunswick, Canada, 45.32 latitude, -65.88 longitude.
Elevation: 109 m (358 ft).
Period of record: 1946 to 2012, 67 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 Saint John 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 Saint John A, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
14.0 C (57.2 F)
-31.7 C (-25.1 F)
n/a
n/a
Feb
11.1 C (52.0 F)
-36.7 C (-34.1 F)
n/a
n/a
Mar
14.4 C (57.9 F)
-30.0 C (-22.0 F)
n/a
n/a
Apr
22.8 C (73.0 F)
-16.7 C (1.9 F)
n/a
n/a
May
30.0 C (86.0 F)
-7.8 C (18.0 F)
n/a
n/a
Jun
32.0 C (89.6 F)
-2.2 C (28.0 F)
n/a
n/a
Jul
32.8 C (91.0 F)
1.1 C (34.0 F)
n/a
n/a
Aug
34.4 C (93.9 F)
-0.6 C (30.9 F)
n/a
n/a
Sep
28.9 C (84.0 F)
-6.7 C (19.9 F)
n/a
n/a
Oct
25.6 C (78.1 F)
-10.6 C (12.9 F)
n/a
n/a
Nov
21.7 C (71.1 F)
-16.7 C (1.9 F)
n/a
n/a
Dec
16.1 C (61.0 F)
-30.9 C (-23.6 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Saint John A still stand. 1948 holds the most, with 96.
Standing records at Saint John A by the year they were set
Year set
Standing records
1946
2
1947
79
1948
96
1949
70
1950
12
1952
29
1953
71
1954
38
1955
28
1956
45
1957
50
1958
29
1959
48
1960
26
1961
34
1962
36
1963
47
1964
41
1965
36
1966
29
1967
46
1968
37
1969
24
1970
39
1971
38
1972
36
1973
37
1974
38
1975
24
1976
53
1977
29
1978
30
1979
56
1980
27
1981
37
1982
40
1983
27
All-Time Record Progression
1 new records
1 all-time records were set at Saint John A between 4 January 1981 and 4 January 1981. Each dot is a new record.
When Saint John A set new all-time records
Date
Kind
Detail
1981-01-04
Record low maximum temperature
Record low maximum temperature -22.5 C (-8.5 F)
Wettest Day of Each Month
Nov: 154.4 mm (6.1 in)
The wettest day on record for each calendar month at Saint John A. The most was 154.4 mm (6.1 in) on 13 November 1975.
Record daily precipitation for each month at Saint John A
Month
Record daily precipitation (mm)
Date
Jan
83.0 mm (3.3 in)
26 January 1978
Feb
95.0 mm (3.7 in)
5 February 1947
Mar
74.0 mm (2.9 in)
18 March 1980
Apr
125.5 mm (4.9 in)
1 April 1962
May
66.5 mm (2.6 in)
21 May 1973
Jun
80.8 mm (3.2 in)
25 June 1981
Jul
72.6 mm (2.9 in)
9 July 1957
Aug
125.2 mm (4.9 in)
2 August 1970
Sep
74.9 mm (2.9 in)
15 September 1966
Oct
85.3 mm (3.4 in)
29 October 1963
Nov
154.4 mm (6.1 in)
13 November 1975
Dec
105.7 mm (4.2 in)
4 December 1967
Period of Record Coverage
1946 to 1983
Complete yearUnder 90 percent of days
37 years of record at Saint John A, 1946 to 1983. 2 years have data for under 90 percent of days and are left out of rankings: 1946, 1950.
Cooler than the station meanWarmer than the station mean
One stripe for each of 34 complete years at Saint John A, 1948 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 1948, at 3.8 C (38.8 F), and the warmest was 1953, at 6.9 C (44.4 F). The strongest colour marks a difference of 2.0 C (3.6 F).
Annual mean temperature at Saint John A as warming stripes, 1948 to 1983
Year
Annual mean temperature
Difference from the station mean
1948
3.8 C
-1.22 C
1949
5.2 C
+0.18 C
1952
6.0 C
+1.05 C
1953
6.9 C
+1.90 C
1954
5.7 C
+0.74 C
1955
4.9 C
-0.03 C
1956
4.6 C
-0.34 C
1957
5.6 C
+0.58 C
1958
5.1 C
+0.16 C
1959
5.3 C
+0.28 C
1960
6.0 C
+0.98 C
1961
4.9 C
-0.03 C
1962
4.3 C
-0.65 C
1963
4.2 C
-0.81 C
1964
4.4 C
-0.58 C
1965
3.8 C
-1.18 C
1966
5.3 C
+0.29 C
1967
4.0 C
-0.98 C
1968
4.6 C
-0.38 C
1969
5.5 C
+0.50 C
1970
4.5 C
-0.45 C
1971
4.8 C
-0.16 C
1972
3.9 C
-1.03 C
1973
5.8 C
+0.82 C
1974
4.6 C
-0.37 C
1975
4.8 C
-0.15 C
1976
4.7 C
-0.24 C
1977
5.1 C
+0.09 C
1978
4.3 C
-0.64 C
1979
5.9 C
+0.90 C
1980
4.5 C
-0.51 C
1981
5.5 C
+0.53 C
1982
4.6 C
-0.40 C
1983
6.0 C
+1.06 C
The fitted trend in annual mean temperature here over 1948 to 1983 is -0.1 C (-0.3 to 0.2) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.1 F (-0.6 to 0.3) per decade. The slope is a straight line fitted to 34 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Saint John A
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.1 C (-0.3 to 0.2) per decade
-0.1 F (-0.6 to 0.3) per decade
1948 to 1983
34
Not clearly different from zero
Mean daily maximum
-0.1 C (-0.3 to 0.1) per decade
-0.3 F (-0.6 to 0.1) per decade
1948 to 1983
34
Not clearly different from zero
Mean daily minimum
-0.01 C (-0.36 to 0.35) per decade
-0.01 F (-0.65 to 0.62) per decade
1948 to 1983
34
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
1946 to 1983
Yearly extremes at Saint John A: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
34.4 C (93.9 F)
1976
29.9 C (85.8 F)
37
Coldest night (TNn)
-36.7 C (-34.1 F)
1948
-27.8 C (-18.0 F)
37
Wettest day (Rx1day)
154.4 mm (6.1 in)
1975
72.4 mm (2.9 in)
37
Wettest five days (Rx5day)
180.6 mm (7.1 in)
1975
103.6 mm (4.1 in)
37
Longest dry spell (CDD)
24 days
1983
15 days
37
Hottest day (TXx)
The hottest day of the year at Saint John A, 1946 to 1983. The record is 34.4 C (93.9 F) in 1976, marked on the chart; the median year is 29.9 C (85.8 F).
Hottest day (TXx) at Saint John A by year
Year
Hottest day (TXx)
1946
12.2 C (54.0 F)
1947
29.4 C (84.9 F)
1948
30.0 C (86.0 F)
1949
31.1 C (88.0 F)
1950
11.1 C (52.0 F)
1952
30.0 C (86.0 F)
1953
31.1 C (88.0 F)
1954
28.3 C (82.9 F)
1955
29.4 C (84.9 F)
1956
27.8 C (82.0 F)
1957
30.0 C (86.0 F)
1958
27.2 C (81.0 F)
1959
30.6 C (87.1 F)
1960
30.0 C (86.0 F)
1961
28.3 C (82.9 F)
1962
27.2 C (81.0 F)
1963
32.8 C (91.0 F)
1964
27.2 C (81.0 F)
1965
27.8 C (82.0 F)
1966
27.2 C (81.0 F)
1967
27.8 C (82.0 F)
1968
32.2 C (90.0 F)
1969
30.0 C (86.0 F)
1970
31.7 C (89.1 F)
1971
27.2 C (81.0 F)
1972
26.1 C (79.0 F)
1973
32.2 C (90.0 F)
1974
30.6 C (87.1 F)
1975
33.3 C (91.9 F)
1976
34.4 C (93.9 F)
1977
30.7 C (87.3 F)
1978
29.9 C (85.8 F)
1979
30.2 C (86.4 F)
1980
29.4 C (84.9 F)
1981
28.4 C (83.1 F)
1982
28.3 C (82.9 F)
1983
32.0 C (89.6 F)
Coldest night (TNn)
The coldest night of the year at Saint John A, 1946 to 1983. The record is -36.7 C (-34.1 F) in 1948, marked on the chart; the median year is -27.8 C (-18.0 F).
Coldest night (TNn) at Saint John A by year
Year
Coldest night (TNn)
1946
-16.7 C (1.9 F)
1947
-26.7 C (-16.1 F)
1948
-36.7 C (-34.1 F)
1949
-27.2 C (-17.0 F)
1950
-29.4 C (-20.9 F)
1952
-26.7 C (-16.1 F)
1953
-19.4 C (-2.9 F)
1954
-28.9 C (-20.0 F)
1955
-28.3 C (-18.9 F)
1956
-26.7 C (-16.1 F)
1957
-31.1 C (-24.0 F)
1958
-22.2 C (-8.0 F)
1959
-26.7 C (-16.1 F)
1960
-25.0 C (-13.0 F)
1961
-30.6 C (-23.1 F)
1962
-29.4 C (-20.9 F)
1963
-30.0 C (-22.0 F)
1964
-28.3 C (-18.9 F)
1965
-30.6 C (-23.1 F)
1966
-28.3 C (-18.9 F)
1967
-28.3 C (-18.9 F)
1968
-27.2 C (-17.0 F)
1969
-22.8 C (-9.0 F)
1970
-24.4 C (-11.9 F)
1971
-31.7 C (-25.1 F)
1972
-27.8 C (-18.0 F)
1973
-26.1 C (-15.0 F)
1974
-27.2 C (-17.0 F)
1975
-27.2 C (-17.0 F)
1976
-31.1 C (-24.0 F)
1977
-29.1 C (-20.4 F)
1978
-25.2 C (-13.4 F)
1979
-23.8 C (-10.8 F)
1980
-30.9 C (-23.6 F)
1981
-30.2 C (-22.4 F)
1982
-30.8 C (-23.4 F)
1983
-24.0 C (-11.2 F)
Wettest day (Rx1day)
The wettest day of the year at Saint John A, 1946 to 1983. The record is 154.4 mm (6.1 in) in 1975, marked on the chart; the median year is 72.4 mm (2.9 in).
Wettest day (Rx1day) at Saint John A by year
Year
Wettest day (Rx1day)
1946
21.1 mm (0.8 in)
1947
95.0 mm (3.7 in)
1948
48.5 mm (1.9 in)
1949
69.3 mm (2.7 in)
1950
31.5 mm (1.2 in)
1952
49.3 mm (1.9 in)
1953
72.1 mm (2.8 in)
1954
57.2 mm (2.3 in)
1955
84.3 mm (3.3 in)
1956
62.0 mm (2.4 in)
1957
72.6 mm (2.9 in)
1958
99.8 mm (3.9 in)
1959
72.4 mm (2.9 in)
1960
59.7 mm (2.4 in)
1961
66.0 mm (2.6 in)
1962
125.5 mm (4.9 in)
1963
85.3 mm (3.4 in)
1964
67.3 mm (2.6 in)
1965
56.4 mm (2.2 in)
1966
74.9 mm (2.9 in)
1967
105.7 mm (4.2 in)
1968
53.6 mm (2.1 in)
1969
53.8 mm (2.1 in)
1970
125.2 mm (4.9 in)
1971
80.0 mm (3.1 in)
1972
72.4 mm (2.9 in)
1973
78.5 mm (3.1 in)
1974
85.1 mm (3.4 in)
1975
154.4 mm (6.1 in)
1976
72.1 mm (2.8 in)
1977
57.6 mm (2.3 in)
1978
83.0 mm (3.3 in)
1979
78.0 mm (3.1 in)
1980
74.0 mm (2.9 in)
1981
100.0 mm (3.9 in)
1982
60.0 mm (2.4 in)
1983
59.6 mm (2.3 in)
Wettest five days (Rx5day)
The wettest five days of the year at Saint John A, 1946 to 1983. The record is 180.6 mm (7.1 in) in 1975, marked on the chart; the median year is 103.6 mm (4.1 in).
Wettest five days (Rx5day) at Saint John A by year
Year
Wettest five days (Rx5day)
1946
34.4 mm (1.4 in)
1947
168.6 mm (6.6 in)
1948
74.4 mm (2.9 in)
1949
124.2 mm (4.9 in)
1950
53.5 mm (2.1 in)
1952
104.6 mm (4.1 in)
1953
103.9 mm (4.1 in)
1954
99.3 mm (3.9 in)
1955
92.9 mm (3.7 in)
1956
105.4 mm (4.1 in)
1957
86.6 mm (3.4 in)
1958
127.0 mm (5.0 in)
1959
124.8 mm (4.9 in)
1960
103.4 mm (4.1 in)
1961
97.5 mm (3.8 in)
1962
133.1 mm (5.2 in)
1963
141.2 mm (5.6 in)
1964
131.3 mm (5.2 in)
1965
82.6 mm (3.3 in)
1966
75.2 mm (3.0 in)
1967
131.1 mm (5.2 in)
1968
85.4 mm (3.4 in)
1969
113.2 mm (4.5 in)
1970
143.2 mm (5.6 in)
1971
82.3 mm (3.2 in)
1972
96.3 mm (3.8 in)
1973
100.9 mm (4.0 in)
1974
96.8 mm (3.8 in)
1975
180.6 mm (7.1 in)
1976
87.3 mm (3.4 in)
1977
143.4 mm (5.6 in)
1978
103.6 mm (4.1 in)
1979
129.8 mm (5.1 in)
1980
124.0 mm (4.9 in)
1981
137.6 mm (5.4 in)
1982
97.2 mm (3.8 in)
1983
84.3 mm (3.3 in)
Longest dry spell (CDD)
The longest dry spell of the year at Saint John A, 1946 to 1983. The record is 24 days in 1983, marked on the chart; the median year is 15 days.
Longest dry spell (CDD) at Saint John A by year
Year
Longest dry spell (CDD)
1946
13 days
1947
15 days
1948
18 days
1949
10 days
1950
3 days
1952
19 days
1953
15 days
1954
15 days
1955
12 days
1956
15 days
1957
10 days
1958
10 days
1959
17 days
1960
17 days
1961
22 days
1962
14 days
1963
15 days
1964
14 days
1965
13 days
1966
13 days
1967
14 days
1968
19 days
1969
17 days
1970
22 days
1971
15 days
1972
10 days
1973
10 days
1974
10 days
1975
15 days
1976
19 days
1977
12 days
1978
23 days
1979
18 days
1980
12 days
1981
15 days
1982
16 days
1983
24 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
34 years with a frost
Across 34 years with a frost, the median last spring frost at Saint John A falls on 19 May and the median first autumn frost on 4 October, which leaves a median of 143 days between them.
Fitted over all years, the growing season changes by +7.6 days per decade at this station.
Frost dates and growing season at Saint John A
Measure
Median, all years
Earliest period
Recent period (1954 to 1983)
Recent against earliest
Fitted trend
Last spring frost
19 May
n/a
19 May
n/a
-2.1 days per decade
First autumn frost
4 October
n/a
7 October
n/a
+5.5 days per decade
Growing days
143 days
n/a
144 days
n/a
+7.6 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
35 years, 1947 to 1983
A day with at least 71.8 mm (2.8 in) of rain is expected about once in 2 years. A day with at least 166.6 mm (6.6 in) of rain is expected about once in 100 years.
Rainfall return levels at Saint John 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
71.8 mm (2.8 in)
5 years
91.5 mm (3.6 in)
10 years
106.6 mm (4.2 in)
25 years
128.3 mm (5.1 in)
50 years
146.5 mm (5.8 in)
Longer than the 35 years of record
100 years
166.6 mm (6.6 in)
Longer than the 35 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, 35 years of values from 1947 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: 154.4 mm (6.1 in) in 1975; 125.5 mm (4.9 in) in 1962; 125.2 mm (4.9 in) in 1970.
Download the Data
Data for Saint John A standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Saint John 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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.