Record envelope, standing records and threshold days for Deer Lake (CA008401500), Newfoundland and Labrador, Canada, with 92 years of record.
Key Facts for Deer Lake
Deer Lake (CA008401500) is a weather station in Newfoundland and Labrador, Canada at 49.17 latitude and -57.43 longitude, 11 m (36 ft) above sea level.
The station reports from 1933 to 2024, 92 years of record.
1,464 records set at Deer Lake still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
Deer Lake set a daily record high minimum temperature of 3.0 C (37.4 F) on 16 December 1983.
About the Station
Location: Newfoundland and Labrador, Canada, 49.17 latitude, -57.43 longitude.
Elevation: 11 m (36 ft).
Period of record: 1933 to 2024, 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 Deer Lake. 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 Deer Lake, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
13.3 C (55.9 F)
-33.9 C (-29.0 F)
n/a
n/a
Feb
13.3 C (55.9 F)
-37.2 C (-35.0 F)
n/a
n/a
Mar
17.0 C (62.6 F)
-35.0 C (-31.0 F)
n/a
n/a
Apr
23.0 C (73.4 F)
-21.7 C (-7.1 F)
n/a
n/a
May
27.8 C (82.0 F)
-10.6 C (12.9 F)
n/a
n/a
Jun
31.7 C (89.1 F)
-4.4 C (24.1 F)
n/a
n/a
Jul
35.6 C (96.1 F)
-0.6 C (30.9 F)
n/a
n/a
Aug
32.2 C (90.0 F)
-2.2 C (28.0 F)
n/a
n/a
Sep
28.9 C (84.0 F)
-3.9 C (25.0 F)
n/a
n/a
Oct
23.3 C (73.9 F)
-10.5 C (13.1 F)
n/a
n/a
Nov
21.1 C (70.0 F)
-20.6 C (-5.1 F)
n/a
n/a
Dec
16.7 C (62.1 F)
-29.4 C (-20.9 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Deer Lake still stand. 1979 holds the most, with 58.
Standing records at Deer Lake by the year they were set
Year set
Standing records
1933
27
1934
47
1935
38
1936
33
1937
34
1938
35
1939
31
1940
29
1941
28
1942
29
1943
25
1944
20
1945
13
1946
19
1947
36
1948
25
1949
27
1950
27
1951
24
1952
20
1953
26
1954
40
1955
23
1956
36
1957
41
1958
26
1959
30
1960
14
1961
31
1962
20
1963
32
1964
29
1965
21
1966
20
1967
34
1968
10
1969
33
1970
35
1971
25
1972
40
1973
23
1974
27
1975
35
1976
38
1977
24
1978
33
1979
58
1980
12
1981
23
1982
23
1983
35
All-Time Record Progression
2 new records
2 all-time records were set at Deer Lake between 23 July 1967 and 4 August 1970. Each dot is a new record.
When Deer Lake set new all-time records
Date
Kind
Detail
1967-07-23
Record high minimum temperature
Record high minimum temperature 20.6 C (69.1 F)
1970-08-04
Record high minimum temperature
Record high minimum temperature 21.1 C (70.0 F)
Wettest Day of Each Month
Oct: 85.1 mm (3.4 in)
The wettest day on record for each calendar month at Deer Lake. The most was 85.1 mm (3.4 in) on 2 October 1957.
Record daily precipitation for each month at Deer Lake
Month
Record daily precipitation (mm)
Date
Jan
38.1 mm (1.5 in)
5 January 1977
Feb
82.6 mm (3.3 in)
28 February 1946
Mar
48.5 mm (1.9 in)
27 March 1934
Apr
42.7 mm (1.7 in)
10 April 1951
May
72.6 mm (2.9 in)
5 May 1945
Jun
50.4 mm (2.0 in)
1 June 1983
Jul
53.8 mm (2.1 in)
20 July 1942
Aug
54.1 mm (2.1 in)
20 August 1965
Sep
74.2 mm (2.9 in)
15 September 1944
Oct
85.1 mm (3.4 in)
2 October 1957
Nov
49.6 mm (2.0 in)
5 November 1980
Dec
57.4 mm (2.3 in)
26 December 1977
Period of Record Coverage
1933 to 1983
Complete yearUnder 90 percent of days
51 years of record at Deer Lake, 1933 to 1983. 6 years have data for under 90 percent of days and are left out of rankings: 1933, 1936, 1953, 1968, 1969, 1970.
Cooler than the station meanWarmer than the station mean
One stripe for each of 36 complete years at Deer Lake, 1934 to 1983. Blue stripes are years cooler than the station's own mean of 4.0 C (39.1 F); red stripes are warmer. The coolest year was 1972, at 2.2 C (36.0 F), and the warmest was 1981, at 5.8 C (42.4 F). The strongest colour marks a difference of 1.8 C (3.2 F).
Annual mean temperature at Deer Lake as warming stripes, 1934 to 1983
Year
Annual mean temperature
Difference from the station mean
1934
3.1 C
-0.87 C
1935
3.4 C
-0.54 C
1937
4.8 C
+0.82 C
1938
3.6 C
-0.36 C
1939
3.0 C
-0.93 C
1940
4.3 C
+0.37 C
1941
3.5 C
-0.44 C
1942
5.0 C
+1.07 C
1943
3.9 C
-0.04 C
1944
4.3 C
+0.36 C
1946
4.1 C
+0.15 C
1947
4.0 C
+0.07 C
1948
3.5 C
-0.44 C
1949
4.1 C
+0.15 C
1951
5.3 C
+1.28 C
1954
4.4 C
+0.42 C
1957
2.9 C
-1.05 C
1958
4.9 C
+0.90 C
1959
3.1 C
-0.89 C
1961
4.0 C
+0.07 C
1962
3.6 C
-0.33 C
1963
3.6 C
-0.37 C
1964
3.5 C
-0.51 C
1965
3.7 C
-0.29 C
1966
5.2 C
+1.19 C
1967
4.4 C
+0.43 C
1972
2.2 C
-1.73 C
1973
4.2 C
+0.26 C
1974
2.7 C
-1.26 C
1976
3.5 C
-0.44 C
1978
3.5 C
-0.46 C
1979
5.6 C
+1.58 C
1980
3.7 C
-0.26 C
1981
5.8 C
+1.78 C
1982
3.3 C
-0.69 C
1983
4.9 C
+0.95 C
The fitted trend in annual mean temperature here over 1934 to 1983 is 0.04 C (-0.14 to 0.22) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.1 F (-0.3 to 0.4) per decade. The slope is a straight line fitted to 36 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Deer Lake
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.04 C (-0.14 to 0.22) per decade
0.1 F (-0.3 to 0.4) per decade
1934 to 1983
36
Not clearly different from zero
Mean daily maximum
-0.1 C (-0.3 to 0.1) per decade
-0.1 F (-0.5 to 0.2) per decade
1934 to 1983
36
Not clearly different from zero
Mean daily minimum
0.16 C (-0.05 to 0.37) per decade
0.3 F (-0.1 to 0.7) per decade
1934 to 1983
36
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
1933 to 1983
Yearly extremes at Deer Lake: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
35.6 C (96.1 F)
1952
29.4 C (84.9 F)
51
Coldest night (TNn)
-37.2 C (-35.0 F)
1961
-27.8 C (-18.0 F)
51
Wettest day (Rx1day)
85.1 mm (3.4 in)
1957
41.9 mm (1.6 in)
51
Wettest five days (Rx5day)
109.4 mm (4.3 in)
1951
71.7 mm (2.8 in)
51
Longest dry spell (CDD)
27 days
1976
14 days
51
Hottest day (TXx)
The hottest day of the year at Deer Lake, 1933 to 1983. The record is 35.6 C (96.1 F) in 1952, marked on the chart; the median year is 29.4 C (84.9 F).
Hottest day (TXx) at Deer Lake by year
Year
Hottest day (TXx)
1933
29.4 C (84.9 F)
1934
30.0 C (86.0 F)
1935
30.6 C (87.1 F)
1936
28.3 C (82.9 F)
1937
32.2 C (90.0 F)
1938
28.9 C (84.0 F)
1939
31.1 C (88.0 F)
1940
30.6 C (87.1 F)
1941
29.4 C (84.9 F)
1942
29.4 C (84.9 F)
1943
31.1 C (88.0 F)
1944
28.9 C (84.0 F)
1945
29.4 C (84.9 F)
1946
30.0 C (86.0 F)
1947
31.1 C (88.0 F)
1948
30.0 C (86.0 F)
1949
28.9 C (84.0 F)
1950
31.1 C (88.0 F)
1951
31.7 C (89.1 F)
1952
35.6 C (96.1 F)
1953
29.4 C (84.9 F)
1954
30.0 C (86.0 F)
1955
30.6 C (87.1 F)
1956
27.2 C (81.0 F)
1957
29.4 C (84.9 F)
1958
27.8 C (82.0 F)
1959
32.2 C (90.0 F)
1960
29.4 C (84.9 F)
1961
28.3 C (82.9 F)
1962
29.4 C (84.9 F)
1963
28.3 C (82.9 F)
1964
27.8 C (82.0 F)
1965
28.3 C (82.9 F)
1966
28.3 C (82.9 F)
1967
29.4 C (84.9 F)
1968
28.3 C (82.9 F)
1969
28.3 C (82.9 F)
1970
31.7 C (89.1 F)
1971
28.9 C (84.0 F)
1972
29.4 C (84.9 F)
1973
28.3 C (82.9 F)
1974
29.4 C (84.9 F)
1975
32.2 C (90.0 F)
1976
32.2 C (90.0 F)
1977
29.4 C (84.9 F)
1978
30.0 C (86.0 F)
1979
29.0 C (84.2 F)
1980
29.0 C (84.2 F)
1981
27.5 C (81.5 F)
1982
30.0 C (86.0 F)
1983
32.0 C (89.6 F)
Coldest night (TNn)
The coldest night of the year at Deer Lake, 1933 to 1983. The record is -37.2 C (-35.0 F) in 1961, marked on the chart; the median year is -27.8 C (-18.0 F).
Coldest night (TNn) at Deer Lake by year
Year
Coldest night (TNn)
1933
-26.7 C (-16.1 F)
1934
-31.7 C (-25.1 F)
1935
-31.7 C (-25.1 F)
1936
-29.4 C (-20.9 F)
1937
-27.8 C (-18.0 F)
1938
-36.1 C (-33.0 F)
1939
-32.2 C (-26.0 F)
1940
-28.9 C (-20.0 F)
1941
-27.8 C (-18.0 F)
1942
-24.4 C (-11.9 F)
1943
-29.4 C (-20.9 F)
1944
-25.6 C (-14.1 F)
1945
-30.0 C (-22.0 F)
1946
-23.3 C (-9.9 F)
1947
-23.3 C (-9.9 F)
1948
-31.7 C (-25.1 F)
1949
-28.9 C (-20.0 F)
1950
-31.1 C (-24.0 F)
1951
-25.0 C (-13.0 F)
1952
-27.2 C (-17.0 F)
1953
-23.3 C (-9.9 F)
1954
-25.0 C (-13.0 F)
1955
-25.0 C (-13.0 F)
1956
-25.6 C (-14.1 F)
1957
-33.9 C (-29.0 F)
1958
-24.4 C (-11.9 F)
1959
-27.8 C (-18.0 F)
1960
-22.8 C (-9.0 F)
1961
-37.2 C (-35.0 F)
1962
-29.4 C (-20.9 F)
1963
-33.3 C (-27.9 F)
1964
-27.2 C (-17.0 F)
1965
-33.3 C (-27.9 F)
1966
-29.4 C (-20.9 F)
1967
-29.4 C (-20.9 F)
1968
-27.2 C (-17.0 F)
1969
-21.1 C (-6.0 F)
1970
-22.2 C (-8.0 F)
1971
-31.7 C (-25.1 F)
1972
-28.9 C (-20.0 F)
1973
-35.0 C (-31.0 F)
1974
-25.0 C (-13.0 F)
1975
-30.0 C (-22.0 F)
1976
-31.1 C (-24.0 F)
1977
-25.0 C (-13.0 F)
1978
-28.9 C (-20.0 F)
1979
-24.0 C (-11.2 F)
1980
-25.5 C (-13.9 F)
1981
-24.5 C (-12.1 F)
1982
-27.5 C (-17.5 F)
1983
-27.0 C (-16.6 F)
Wettest day (Rx1day)
The wettest day of the year at Deer Lake, 1933 to 1983. The record is 85.1 mm (3.4 in) in 1957, marked on the chart; the median year is 41.9 mm (1.6 in).
Wettest day (Rx1day) at Deer Lake by year
Year
Wettest day (Rx1day)
1933
51.6 mm (2.0 in)
1934
48.5 mm (1.9 in)
1935
46.7 mm (1.8 in)
1936
37.1 mm (1.5 in)
1937
30.2 mm (1.2 in)
1938
41.7 mm (1.6 in)
1939
49.5 mm (1.9 in)
1940
40.6 mm (1.6 in)
1941
49.3 mm (1.9 in)
1942
53.8 mm (2.1 in)
1943
43.2 mm (1.7 in)
1944
74.2 mm (2.9 in)
1945
72.6 mm (2.9 in)
1946
82.6 mm (3.3 in)
1947
52.6 mm (2.1 in)
1948
61.2 mm (2.4 in)
1949
41.7 mm (1.6 in)
1950
29.2 mm (1.1 in)
1951
42.7 mm (1.7 in)
1952
45.2 mm (1.8 in)
1953
52.8 mm (2.1 in)
1954
30.5 mm (1.2 in)
1955
64.8 mm (2.6 in)
1956
34.8 mm (1.4 in)
1957
85.1 mm (3.4 in)
1958
45.7 mm (1.8 in)
1959
30.5 mm (1.2 in)
1960
31.8 mm (1.3 in)
1961
61.5 mm (2.4 in)
1962
41.9 mm (1.6 in)
1963
51.8 mm (2.0 in)
1964
28.2 mm (1.1 in)
1965
54.1 mm (2.1 in)
1966
37.1 mm (1.5 in)
1967
40.6 mm (1.6 in)
1968
40.6 mm (1.6 in)
1969
31.2 mm (1.2 in)
1970
41.1 mm (1.6 in)
1971
43.7 mm (1.7 in)
1972
39.6 mm (1.6 in)
1973
34.8 mm (1.4 in)
1974
38.1 mm (1.5 in)
1975
32.0 mm (1.3 in)
1976
36.1 mm (1.4 in)
1977
57.4 mm (2.3 in)
1978
34.6 mm (1.4 in)
1979
35.4 mm (1.4 in)
1980
56.1 mm (2.2 in)
1981
41.4 mm (1.6 in)
1982
35.0 mm (1.4 in)
1983
50.4 mm (2.0 in)
Wettest five days (Rx5day)
The wettest five days of the year at Deer Lake, 1933 to 1983. The record is 109.4 mm (4.3 in) in 1951, marked on the chart; the median year is 71.7 mm (2.8 in).
Wettest five days (Rx5day) at Deer Lake by year
Year
Wettest five days (Rx5day)
1933
84.4 mm (3.3 in)
1934
57.7 mm (2.3 in)
1935
81.4 mm (3.2 in)
1936
49.1 mm (1.9 in)
1937
62.2 mm (2.4 in)
1938
63.5 mm (2.5 in)
1939
65.9 mm (2.6 in)
1940
46.3 mm (1.8 in)
1941
71.7 mm (2.8 in)
1942
90.9 mm (3.6 in)
1943
76.2 mm (3.0 in)
1944
81.8 mm (3.2 in)
1945
91.0 mm (3.6 in)
1946
106.1 mm (4.2 in)
1947
87.6 mm (3.4 in)
1948
92.3 mm (3.6 in)
1949
71.7 mm (2.8 in)
1950
51.9 mm (2.0 in)
1951
109.4 mm (4.3 in)
1952
69.3 mm (2.7 in)
1953
68.1 mm (2.7 in)
1954
68.3 mm (2.7 in)
1955
80.0 mm (3.1 in)
1956
87.5 mm (3.4 in)
1957
89.7 mm (3.5 in)
1958
75.7 mm (3.0 in)
1959
51.6 mm (2.0 in)
1960
49.8 mm (2.0 in)
1961
101.4 mm (4.0 in)
1962
69.3 mm (2.7 in)
1963
56.7 mm (2.2 in)
1964
53.4 mm (2.1 in)
1965
64.7 mm (2.5 in)
1966
68.8 mm (2.7 in)
1967
60.4 mm (2.4 in)
1968
47.7 mm (1.9 in)
1969
71.6 mm (2.8 in)
1970
72.2 mm (2.8 in)
1971
73.4 mm (2.9 in)
1972
57.1 mm (2.2 in)
1973
84.1 mm (3.3 in)
1974
73.2 mm (2.9 in)
1975
60.2 mm (2.4 in)
1976
83.0 mm (3.3 in)
1977
77.6 mm (3.1 in)
1978
65.4 mm (2.6 in)
1979
72.0 mm (2.8 in)
1980
67.5 mm (2.7 in)
1981
60.2 mm (2.4 in)
1982
92.0 mm (3.6 in)
1983
106.2 mm (4.2 in)
Longest dry spell (CDD)
The longest dry spell of the year at Deer Lake, 1933 to 1983. The record is 27 days in 1976, marked on the chart; the median year is 14 days.
Longest dry spell (CDD) at Deer Lake by year
Year
Longest dry spell (CDD)
1933
12 days
1934
13 days
1935
18 days
1936
9 days
1937
22 days
1938
18 days
1939
15 days
1940
21 days
1941
16 days
1942
16 days
1943
16 days
1944
11 days
1945
12 days
1946
9 days
1947
17 days
1948
18 days
1949
17 days
1950
16 days
1951
15 days
1952
14 days
1953
11 days
1954
18 days
1955
15 days
1956
22 days
1957
11 days
1958
25 days
1959
11 days
1960
13 days
1961
17 days
1962
22 days
1963
20 days
1964
9 days
1965
13 days
1966
13 days
1967
9 days
1968
10 days
1969
12 days
1970
9 days
1971
13 days
1972
17 days
1973
13 days
1974
12 days
1975
9 days
1976
27 days
1977
17 days
1978
14 days
1979
16 days
1980
12 days
1981
16 days
1982
12 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
36 years with a frost
Across 36 years with a frost, the median last spring frost at Deer Lake falls on 10 June and the median first autumn frost on 12 September, which leaves a median of 94 days between them.
Fitted over all years, the growing season changes by -2.1 days per decade at this station.
Frost dates and growing season at Deer Lake
Measure
Median, all years
Earliest period
Recent period (1941 to 1983)
Recent against earliest
Fitted trend
Last spring frost
10 June
n/a
12 June
n/a
+0.6 days per decade
First autumn frost
12 September
n/a
11 September
n/a
-1.5 days per decade
Growing days
94 days
n/a
92 days
n/a
-2.1 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, 1934 to 1983
A day with at least 43.1 mm (1.7 in) of rain is expected about once in 2 years. A day with at least 97.5 mm (3.8 in) of rain is expected about once in 100 years.
Rainfall return levels at Deer Lake: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
43.1 mm (1.7 in)
5 years
55.6 mm (2.2 in)
10 years
64.6 mm (2.5 in)
25 years
77.0 mm (3.0 in)
50 years
87.0 mm (3.4 in)
Longer than the 44 years of record
100 years
97.5 mm (3.8 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 1934 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: 85.1 mm (3.4 in) in 1957; 82.6 mm (3.3 in) in 1946; 74.2 mm (2.9 in) in 1944.
Download the Data
Data for Deer Lake standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Deer Lake 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.