Record envelope, standing records and threshold days for St John's West Cda (CA008403600), Newfoundland and Labrador, Canada, with 47 years of record.
Key Facts for St John's West Cda
St John's West Cda (CA008403600) is a weather station in Newfoundland and Labrador, Canada at 47.52 latitude and -52.78 longitude, 114 m (374 ft) above sea level.
The station reports from 1950 to 1996, 47 years of record.
1,464 records set at St John's West Cda still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
St John's West Cda set a daily record high minimum temperature of 3.5 C (38.3 F) on 30 December 1983.
About the Station
Location: Newfoundland and Labrador, Canada, 47.52 latitude, -52.78 longitude.
Elevation: 114 m (374 ft).
Period of record: 1950 to 1996, 47 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 St John's West Cda. 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 St John's West Cda, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
14.4 C (57.9 F)
-23.3 C (-9.9 F)
n/a
n/a
Feb
13.0 C (55.4 F)
-25.6 C (-14.1 F)
n/a
n/a
Mar
16.1 C (61.0 F)
-22.2 C (-8.0 F)
n/a
n/a
Apr
20.5 C (68.9 F)
-13.0 C (8.6 F)
n/a
n/a
May
26.1 C (79.0 F)
-7.2 C (19.0 F)
n/a
n/a
Jun
28.9 C (84.0 F)
-4.4 C (24.1 F)
n/a
n/a
Jul
31.1 C (88.0 F)
-1.1 C (30.0 F)
n/a
n/a
Aug
30.5 C (86.9 F)
0.6 C (33.1 F)
n/a
n/a
Sep
27.2 C (81.0 F)
-1.7 C (28.9 F)
n/a
n/a
Oct
23.3 C (73.9 F)
-5.6 C (21.9 F)
n/a
n/a
Nov
18.9 C (66.0 F)
-11.1 C (12.0 F)
n/a
n/a
Dec
17.2 C (63.0 F)
-20.6 C (-5.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at St John's West Cda still stand. 1972 holds the most, with 72.
Standing records at St John's West Cda by the year they were set
Year set
Standing records
1950
8
1951
47
1952
26
1953
52
1954
61
1955
48
1956
50
1957
49
1958
42
1959
46
1960
31
1961
57
1962
42
1963
41
1964
44
1965
28
1966
23
1967
64
1968
39
1969
36
1970
52
1971
37
1972
72
1973
47
1974
41
1975
58
1976
42
1977
32
1978
49
1979
62
1980
20
1981
30
1982
31
1983
57
Wettest Day of Each Month
Oct: 100.3 mm (3.9 in)
The wettest day on record for each calendar month at St John's West Cda. The most was 100.3 mm (3.9 in) on 6 October 1953.
Record daily precipitation for each month at St John's West Cda
Month
Record daily precipitation (mm)
Date
Jan
78.2 mm (3.1 in)
9 January 1966
Feb
62.0 mm (2.4 in)
21 February 1967
Mar
73.7 mm (2.9 in)
21 March 1961
Apr
75.2 mm (3.0 in)
11 April 1951
May
52.8 mm (2.1 in)
14 May 1952
Jun
71.9 mm (2.8 in)
17 June 1973
Jul
71.4 mm (2.8 in)
20 July 1958
Aug
90.9 mm (3.6 in)
5 August 1971
Sep
72.4 mm (2.9 in)
7 September 1952
Oct
100.3 mm (3.9 in)
6 October 1953
Nov
76.2 mm (3.0 in)
26 November 1981
Dec
78.7 mm (3.1 in)
20 December 1966
Period of Record Coverage
1950 to 1983
Complete yearUnder 90 percent of days
34 years of record at St John's West Cda, 1950 to 1983. 1 years have data for under 90 percent of days and are left out of rankings: 1950.
Cooler than the station meanWarmer than the station mean
One stripe for each of 31 complete years at St John's West Cda, 1952 to 1983. Blue stripes are years cooler than the station's own mean of 5.0 C (41.1 F); red stripes are warmer. The coolest year was 1959, at 3.9 C (38.9 F), and the warmest was 1981, at 6.3 C (43.4 F). The strongest colour marks a difference of 1.3 C (2.3 F).
Annual mean temperature at St John's West Cda as warming stripes, 1952 to 1983
Year
Annual mean temperature
Difference from the station mean
1952
5.7 C
+0.69 C
1953
5.6 C
+0.54 C
1954
5.3 C
+0.27 C
1955
4.6 C
-0.46 C
1956
4.8 C
-0.26 C
1957
4.2 C
-0.80 C
1958
5.4 C
+0.39 C
1959
3.9 C
-1.18 C
1960
5.4 C
+0.35 C
1961
5.1 C
+0.07 C
1962
4.8 C
-0.24 C
1963
4.8 C
-0.25 C
1964
4.3 C
-0.72 C
1965
4.7 C
-0.33 C
1966
5.8 C
+0.72 C
1967
5.7 C
+0.68 C
1968
4.6 C
-0.40 C
1969
5.7 C
+0.66 C
1970
5.6 C
+0.54 C
1971
5.6 C
+0.53 C
1972
4.0 C
-1.08 C
1973
5.2 C
+0.13 C
1974
4.0 C
-1.05 C
1975
4.1 C
-0.95 C
1977
5.3 C
+0.22 C
1978
4.7 C
-0.34 C
1979
6.0 C
+0.98 C
1980
4.7 C
-0.38 C
1981
6.3 C
+1.29 C
1982
4.7 C
-0.37 C
1983
5.9 C
+0.90 C
The fitted trend in annual mean temperature here over 1952 to 1983 is 0.1 C (-0.2 to 0.3) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.1 F (-0.4 to 0.6) per decade. The slope is a straight line fitted to 31 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at St John's West Cda
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.1 C (-0.2 to 0.3) per decade
0.1 F (-0.4 to 0.6) per decade
1952 to 1983
31
Not clearly different from zero
Mean daily maximum
0.00 C (-0.24 to 0.24) per decade
0.00 F (-0.44 to 0.44) per decade
1952 to 1983
31
Not clearly different from zero
Mean daily minimum
0.1 C (-0.2 to 0.5) per decade
0.3 F (-0.3 to 0.8) per decade
1952 to 1983
31
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
1950 to 1983
Yearly extremes at St John's West Cda: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
31.1 C (88.0 F)
1975
27.9 C (82.2 F)
34
Coldest night (TNn)
-25.6 C (-14.1 F)
1961
-18.9 C (-2.0 F)
34
Wettest day (Rx1day)
100.3 mm (3.9 in)
1953
64.1 mm (2.5 in)
34
Wettest five days (Rx5day)
174.5 mm (6.9 in)
1951
106.9 mm (4.2 in)
34
Longest dry spell (CDD)
15 days
1950
11 days
34
Hottest day (TXx)
The hottest day of the year at St John's West Cda, 1950 to 1983. The record is 31.1 C (88.0 F) in 1975, marked on the chart; the median year is 27.9 C (82.2 F).
Hottest day (TXx) at St John's West Cda by year
Year
Hottest day (TXx)
1950
18.9 C (66.0 F)
1951
27.2 C (81.0 F)
1952
28.9 C (84.0 F)
1953
27.8 C (82.0 F)
1954
26.7 C (80.1 F)
1955
27.8 C (82.0 F)
1956
25.6 C (78.1 F)
1957
26.1 C (79.0 F)
1958
25.6 C (78.1 F)
1959
28.9 C (84.0 F)
1960
27.8 C (82.0 F)
1961
29.4 C (84.9 F)
1962
26.7 C (80.1 F)
1963
30.0 C (86.0 F)
1964
26.7 C (80.1 F)
1965
26.7 C (80.1 F)
1966
25.6 C (78.1 F)
1967
28.9 C (84.0 F)
1968
28.9 C (84.0 F)
1969
26.1 C (79.0 F)
1970
29.4 C (84.9 F)
1971
27.2 C (81.0 F)
1972
28.3 C (82.9 F)
1973
27.2 C (81.0 F)
1974
28.3 C (82.9 F)
1975
31.1 C (88.0 F)
1976
28.9 C (84.0 F)
1977
28.3 C (82.9 F)
1978
30.5 C (86.9 F)
1979
29.5 C (85.1 F)
1980
27.0 C (80.6 F)
1981
29.5 C (85.1 F)
1982
29.0 C (84.2 F)
1983
28.0 C (82.4 F)
Coldest night (TNn)
The coldest night of the year at St John's West Cda, 1950 to 1983. The record is -25.6 C (-14.1 F) in 1961, marked on the chart; the median year is -18.9 C (-2.0 F).
Coldest night (TNn) at St John's West Cda by year
Year
Coldest night (TNn)
1950
-7.8 C (18.0 F)
1951
-20.0 C (-4.0 F)
1952
-17.8 C (0.0 F)
1953
-17.8 C (0.0 F)
1954
-17.8 C (0.0 F)
1955
-18.3 C (-0.9 F)
1956
-16.7 C (1.9 F)
1957
-23.3 C (-9.9 F)
1958
-17.2 C (1.0 F)
1959
-21.7 C (-7.1 F)
1960
-18.9 C (-2.0 F)
1961
-25.6 C (-14.1 F)
1962
-17.8 C (0.0 F)
1963
-18.9 C (-2.0 F)
1964
-18.9 C (-2.0 F)
1965
-20.6 C (-5.1 F)
1966
-16.1 C (3.0 F)
1967
-17.8 C (0.0 F)
1968
-18.3 C (-0.9 F)
1969
-15.0 C (5.0 F)
1970
-20.6 C (-5.1 F)
1971
-20.6 C (-5.1 F)
1972
-21.7 C (-7.1 F)
1973
-19.4 C (-2.9 F)
1974
-18.3 C (-0.9 F)
1975
-25.6 C (-14.1 F)
1976
-16.7 C (1.9 F)
1977
-19.4 C (-2.9 F)
1978
-19.0 C (-2.2 F)
1979
-17.5 C (0.5 F)
1980
-20.5 C (-4.9 F)
1981
-17.0 C (1.4 F)
1982
-20.0 C (-4.0 F)
1983
-19.0 C (-2.2 F)
Wettest day (Rx1day)
The wettest day of the year at St John's West Cda, 1950 to 1983. The record is 100.3 mm (3.9 in) in 1953, marked on the chart; the median year is 64.1 mm (2.5 in).
Wettest day (Rx1day) at St John's West Cda by year
Year
Wettest day (Rx1day)
1950
29.2 mm (1.1 in)
1951
75.2 mm (3.0 in)
1952
72.4 mm (2.9 in)
1953
100.3 mm (3.9 in)
1954
68.6 mm (2.7 in)
1955
60.2 mm (2.4 in)
1956
67.6 mm (2.7 in)
1957
55.6 mm (2.2 in)
1958
71.4 mm (2.8 in)
1959
50.8 mm (2.0 in)
1960
65.3 mm (2.6 in)
1961
73.7 mm (2.9 in)
1962
71.4 mm (2.8 in)
1963
65.0 mm (2.6 in)
1964
58.2 mm (2.3 in)
1965
55.4 mm (2.2 in)
1966
78.7 mm (3.1 in)
1967
62.7 mm (2.5 in)
1968
73.2 mm (2.9 in)
1969
49.3 mm (1.9 in)
1970
60.2 mm (2.4 in)
1971
90.9 mm (3.6 in)
1972
38.1 mm (1.5 in)
1973
71.9 mm (2.8 in)
1974
65.8 mm (2.6 in)
1975
85.1 mm (3.4 in)
1976
42.7 mm (1.7 in)
1977
46.5 mm (1.8 in)
1978
56.0 mm (2.2 in)
1979
56.4 mm (2.2 in)
1980
53.3 mm (2.1 in)
1981
76.2 mm (3.0 in)
1982
63.2 mm (2.5 in)
1983
47.8 mm (1.9 in)
Wettest five days (Rx5day)
The wettest five days of the year at St John's West Cda, 1950 to 1983. The record is 174.5 mm (6.9 in) in 1951, marked on the chart; the median year is 106.9 mm (4.2 in).
Wettest five days (Rx5day) at St John's West Cda by year
Year
Wettest five days (Rx5day)
1950
64.5 mm (2.5 in)
1951
174.5 mm (6.9 in)
1952
97.0 mm (3.8 in)
1953
131.8 mm (5.2 in)
1954
103.0 mm (4.1 in)
1955
119.5 mm (4.7 in)
1956
125.8 mm (5.0 in)
1957
90.1 mm (3.5 in)
1958
77.5 mm (3.1 in)
1959
113.1 mm (4.5 in)
1960
92.2 mm (3.6 in)
1961
156.8 mm (6.2 in)
1962
157.8 mm (6.2 in)
1963
108.4 mm (4.3 in)
1964
83.3 mm (3.3 in)
1965
104.1 mm (4.1 in)
1966
119.6 mm (4.7 in)
1967
113.5 mm (4.5 in)
1968
119.7 mm (4.7 in)
1969
99.5 mm (3.9 in)
1970
140.9 mm (5.5 in)
1971
114.8 mm (4.5 in)
1972
73.4 mm (2.9 in)
1973
97.1 mm (3.8 in)
1974
108.8 mm (4.3 in)
1975
109.0 mm (4.3 in)
1976
72.1 mm (2.8 in)
1977
87.1 mm (3.4 in)
1978
93.5 mm (3.7 in)
1979
143.4 mm (5.6 in)
1980
92.3 mm (3.6 in)
1981
120.9 mm (4.8 in)
1982
103.9 mm (4.1 in)
1983
105.4 mm (4.1 in)
Longest dry spell (CDD)
The longest dry spell of the year at St John's West Cda, 1950 to 1983. The record is 15 days in 1950, marked on the chart; the median year is 11 days.
Longest dry spell (CDD) at St John's West Cda by year
Year
Longest dry spell (CDD)
1950
15 days
1951
11 days
1952
14 days
1953
11 days
1954
12 days
1955
9 days
1956
9 days
1957
12 days
1958
10 days
1959
10 days
1960
12 days
1961
12 days
1962
14 days
1963
7 days
1964
7 days
1965
12 days
1966
9 days
1967
10 days
1968
11 days
1969
10 days
1970
11 days
1971
13 days
1972
15 days
1973
12 days
1974
13 days
1975
11 days
1976
14 days
1977
13 days
1978
9 days
1979
10 days
1980
7 days
1981
11 days
1982
13 days
1983
10 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
31 years with a frost
Across 31 years with a frost, the median last spring frost at St John's West Cda falls on 6 June and the median first autumn frost on 30 September, which leaves a median of 114 days between them.
Fitted over all years, the growing season changes by +17.5 days per decade at this station.
Frost dates and growing season at St John's West Cda
Measure
Median, all years
Earliest period
Recent period (1953 to 1983)
Recent against earliest
Fitted trend
Last spring frost
6 June
n/a
7 June
n/a
-2.2 days per decade
First autumn frost
30 September
n/a
1 October
n/a
+15.2 days per decade
Growing days
114 days
n/a
115 days
n/a
+17.5 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
33 years, 1951 to 1983
A day with at least 63.7 mm (2.5 in) of rain is expected about once in 2 years. A day with at least 98.7 mm (3.9 in) of rain is expected about once in 100 years.
Rainfall return levels at St John's West Cda: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
63.7 mm (2.5 in)
5 years
76.0 mm (3.0 in)
10 years
82.8 mm (3.3 in)
25 years
90.1 mm (3.5 in)
50 years
94.7 mm (3.7 in)
Longer than the 33 years of record
100 years
98.7 mm (3.9 in)
Longer than the 33 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, 33 years of values from 1951 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: 100.3 mm (3.9 in) in 1953; 90.9 mm (3.6 in) in 1971; 85.1 mm (3.4 in) in 1975.
Download the Data
Data for St John's West Cda standing records by year: CSV or JSON. Field meanings are on the data page.
Data for St John's West Cda 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.