Record envelope, standing records and threshold days for Glenwood (CA008401800), Newfoundland and Labrador, Canada, with 41 years of record.
Key Facts for Glenwood
Glenwood (CA008401800) is a weather station in Newfoundland and Labrador, Canada at 49.00 latitude and -54.87 longitude, 31 m (102 ft) above sea level.
The station reports from 1937 to 1977, 41 years of record.
1,464 records set at Glenwood still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
Glenwood set a daily record precipitation of 27.2 mm (1.1 in) on 26 May 1977.
About the Station
Location: Newfoundland and Labrador, Canada, 49.00 latitude, -54.87 longitude.
Elevation: 31 m (102 ft).
Period of record: 1937 to 1977, 41 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 Glenwood. 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 Glenwood, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
11.7 C (53.1 F)
-31.1 C (-24.0 F)
n/a
n/a
Feb
13.3 C (55.9 F)
-38.3 C (-36.9 F)
n/a
n/a
Mar
15.0 C (59.0 F)
-32.2 C (-26.0 F)
n/a
n/a
Apr
23.9 C (75.0 F)
-18.9 C (-2.0 F)
n/a
n/a
May
28.9 C (84.0 F)
-11.1 C (12.0 F)
n/a
n/a
Jun
32.2 C (90.0 F)
-6.1 C (21.0 F)
n/a
n/a
Jul
36.1 C (97.0 F)
-2.2 C (28.0 F)
n/a
n/a
Aug
33.9 C (93.0 F)
-5.6 C (21.9 F)
n/a
n/a
Sep
30.0 C (86.0 F)
-5.0 C (23.0 F)
n/a
n/a
Oct
26.1 C (79.0 F)
-11.1 C (12.0 F)
n/a
n/a
Nov
20.6 C (69.1 F)
-19.4 C (-2.9 F)
n/a
n/a
Dec
16.1 C (61.0 F)
-33.9 C (-29.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Glenwood still stand. 1972 holds the most, with 59.
Standing records at Glenwood by the year they were set
Year set
Standing records
1937
57
1938
50
1939
34
1940
39
1941
37
1942
46
1943
28
1944
30
1945
26
1946
35
1947
46
1948
34
1949
36
1950
43
1951
46
1952
16
1953
33
1954
47
1955
18
1956
40
1957
46
1958
30
1959
37
1960
22
1961
42
1962
28
1963
37
1964
25
1965
24
1966
29
1967
46
1968
40
1969
41
1970
38
1971
37
1972
59
1973
31
1974
32
1975
33
1976
44
1977
2
All-Time Record Progression
3 new records
3 all-time records were set at Glenwood between 23 July 1967 and 4 February 1975. Each dot is a new record.
When Glenwood set new all-time records
Date
Kind
Detail
1967-07-23
Record high minimum temperature
Record high minimum temperature 21.1 C (70.0 F)
1975-02-01
Record low maximum temperature
Record low maximum temperature -24.4 C (-11.9 F)
1975-02-04
Record low minimum temperature
Record low minimum temperature -38.3 C (-36.9 F)
Wettest Day of Each Month
Aug: 88.9 mm (3.5 in)
The wettest day on record for each calendar month at Glenwood. The most was 88.9 mm (3.5 in) on 5 August 1951.
Record daily precipitation for each month at Glenwood
Month
Record daily precipitation (mm)
Date
Jan
45.7 mm (1.8 in)
20 January 1969
Feb
45.7 mm (1.8 in)
19 February 1952
Mar
38.1 mm (1.5 in)
11 March 1961
Apr
40.6 mm (1.6 in)
19 April 1970
May
61.0 mm (2.4 in)
28 May 1937
Jun
50.8 mm (2.0 in)
14 June 1966
Jul
77.5 mm (3.1 in)
21 July 1942
Aug
88.9 mm (3.5 in)
5 August 1951
Sep
60.5 mm (2.4 in)
28 September 1958
Oct
63.2 mm (2.5 in)
27 October 1973
Nov
57.4 mm (2.3 in)
15 November 1971
Dec
54.1 mm (2.1 in)
19 December 1966
Period of Record Coverage
1937 to 1977
Complete yearUnder 90 percent of days
41 years of record at Glenwood, 1937 to 1977. 2 years have data for under 90 percent of days and are left out of rankings: 1937, 1977.
Cooler than the station meanWarmer than the station mean
One stripe for each of 37 complete years at Glenwood, 1938 to 1976. Blue stripes are years cooler than the station's own mean of 4.2 C (39.6 F); red stripes are warmer. The coolest year was 1972, at 2.8 C (37.0 F), and the warmest was 1951, at 5.6 C (42.1 F). The strongest colour marks a difference of 1.5 C (2.7 F).
Annual mean temperature at Glenwood as warming stripes, 1938 to 1976
Year
Annual mean temperature
Difference from the station mean
1938
4.0 C
-0.25 C
1939
3.1 C
-1.16 C
1940
4.2 C
-0.03 C
1941
3.7 C
-0.60 C
1942
4.9 C
+0.68 C
1943
3.9 C
-0.36 C
1944
4.2 C
-0.02 C
1945
4.0 C
-0.26 C
1946
4.4 C
+0.11 C
1947
4.0 C
-0.26 C
1948
3.2 C
-1.05 C
1950
3.8 C
-0.44 C
1951
5.6 C
+1.38 C
1953
5.0 C
+0.79 C
1954
4.5 C
+0.28 C
1955
4.3 C
+0.03 C
1956
4.3 C
+0.04 C
1957
3.5 C
-0.80 C
1958
5.0 C
+0.77 C
1959
3.3 C
-0.93 C
1960
5.2 C
+0.91 C
1961
4.7 C
+0.44 C
1962
3.8 C
-0.45 C
1963
4.6 C
+0.34 C
1964
3.9 C
-0.37 C
1965
4.1 C
-0.11 C
1966
5.5 C
+1.24 C
1967
4.9 C
+0.68 C
1968
4.1 C
-0.12 C
1969
5.6 C
+1.33 C
1970
4.8 C
+0.56 C
1971
5.2 C
+0.93 C
1972
2.8 C
-1.47 C
1973
4.3 C
+0.06 C
1974
2.8 C
-1.42 C
1975
3.5 C
-0.76 C
1976
4.5 C
+0.28 C
The fitted trend in annual mean temperature here over 1938 to 1976 is 0.1 C (-0.1 to 0.3) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.1 F (-0.3 to 0.5) per decade. The slope is a straight line fitted to 37 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Glenwood
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.1 C (-0.1 to 0.3) per decade
0.1 F (-0.3 to 0.5) per decade
1938 to 1976
37
Not clearly different from zero
Mean daily maximum
-0.1 C (-0.3 to 0.1) per decade
-0.1 F (-0.5 to 0.3) per decade
1938 to 1976
37
Not clearly different from zero
Mean daily minimum
0.2 C (-0.1 to 0.5) per decade
0.4 F (-0.1 to 0.8) per decade
1938 to 1976
37
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
1937 to 1977
Yearly extremes at Glenwood: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
36.1 C (97.0 F)
1952
31.1 C (88.0 F)
41
Coldest night (TNn)
-38.3 C (-36.9 F)
1975
-26.7 C (-16.1 F)
41
Wettest day (Rx1day)
88.9 mm (3.5 in)
1951
45.2 mm (1.8 in)
41
Wettest five days (Rx5day)
118.9 mm (4.7 in)
1949
76.8 mm (3.0 in)
41
Longest dry spell (CDD)
22 days
1954
12 days
41
Hottest day (TXx)
The hottest day of the year at Glenwood, 1937 to 1977. The record is 36.1 C (97.0 F) in 1952, marked on the chart; the median year is 31.1 C (88.0 F).
Hottest day (TXx) at Glenwood by year
Year
Hottest day (TXx)
1937
32.8 C (91.0 F)
1938
31.7 C (89.1 F)
1939
31.1 C (88.0 F)
1940
31.7 C (89.1 F)
1941
31.7 C (89.1 F)
1942
31.1 C (88.0 F)
1943
30.0 C (86.0 F)
1944
31.7 C (89.1 F)
1945
31.7 C (89.1 F)
1946
30.6 C (87.1 F)
1947
33.9 C (93.0 F)
1948
30.0 C (86.0 F)
1949
32.2 C (90.0 F)
1950
31.1 C (88.0 F)
1951
31.7 C (89.1 F)
1952
36.1 C (97.0 F)
1953
31.7 C (89.1 F)
1954
30.6 C (87.1 F)
1955
30.6 C (87.1 F)
1956
29.4 C (84.9 F)
1957
29.4 C (84.9 F)
1958
28.9 C (84.0 F)
1959
31.1 C (88.0 F)
1960
31.7 C (89.1 F)
1961
32.8 C (91.0 F)
1962
31.1 C (88.0 F)
1963
33.3 C (91.9 F)
1964
30.6 C (87.1 F)
1965
28.9 C (84.0 F)
1966
28.9 C (84.0 F)
1967
32.2 C (90.0 F)
1968
30.6 C (87.1 F)
1969
28.9 C (84.0 F)
1970
31.1 C (88.0 F)
1971
29.4 C (84.9 F)
1972
31.7 C (89.1 F)
1973
30.6 C (87.1 F)
1974
28.3 C (82.9 F)
1975
34.4 C (93.9 F)
1976
33.9 C (93.0 F)
1977
23.9 C (75.0 F)
Coldest night (TNn)
The coldest night of the year at Glenwood, 1937 to 1977. The record is -38.3 C (-36.9 F) in 1975, marked on the chart; the median year is -26.7 C (-16.1 F).
Coldest night (TNn) at Glenwood by year
Year
Coldest night (TNn)
1937
-23.3 C (-9.9 F)
1938
-33.9 C (-29.0 F)
1939
-28.9 C (-20.0 F)
1940
-27.8 C (-18.0 F)
1941
-23.3 C (-9.9 F)
1942
-26.1 C (-15.0 F)
1943
-28.3 C (-18.9 F)
1944
-26.1 C (-15.0 F)
1945
-26.7 C (-16.1 F)
1946
-26.7 C (-16.1 F)
1947
-28.3 C (-18.9 F)
1948
-29.4 C (-20.9 F)
1949
-31.1 C (-24.0 F)
1950
-30.0 C (-22.0 F)
1951
-23.3 C (-9.9 F)
1952
-23.9 C (-11.0 F)
1953
-22.8 C (-9.0 F)
1954
-24.4 C (-11.9 F)
1955
-21.7 C (-7.1 F)
1956
-27.2 C (-17.0 F)
1957
-30.0 C (-22.0 F)
1958
-21.1 C (-6.0 F)
1959
-24.4 C (-11.9 F)
1960
-23.3 C (-9.9 F)
1961
-32.2 C (-26.0 F)
1962
-24.4 C (-11.9 F)
1963
-28.3 C (-18.9 F)
1964
-28.3 C (-18.9 F)
1965
-28.3 C (-18.9 F)
1966
-26.1 C (-15.0 F)
1967
-31.1 C (-24.0 F)
1968
-25.6 C (-14.1 F)
1969
-18.9 C (-2.0 F)
1970
-24.4 C (-11.9 F)
1971
-27.8 C (-18.0 F)
1972
-33.9 C (-29.0 F)
1973
-30.6 C (-23.1 F)
1974
-25.0 C (-13.0 F)
1975
-38.3 C (-36.9 F)
1976
-27.8 C (-18.0 F)
1977
-24.4 C (-11.9 F)
Wettest day (Rx1day)
The wettest day of the year at Glenwood, 1937 to 1977. The record is 88.9 mm (3.5 in) in 1951, marked on the chart; the median year is 45.2 mm (1.8 in).
Wettest day (Rx1day) at Glenwood by year
Year
Wettest day (Rx1day)
1937
61.0 mm (2.4 in)
1938
27.9 mm (1.1 in)
1939
40.9 mm (1.6 in)
1940
43.2 mm (1.7 in)
1941
55.6 mm (2.2 in)
1942
77.5 mm (3.1 in)
1943
45.2 mm (1.8 in)
1944
39.9 mm (1.6 in)
1945
37.6 mm (1.5 in)
1946
30.5 mm (1.2 in)
1947
26.4 mm (1.0 in)
1948
48.5 mm (1.9 in)
1949
83.3 mm (3.3 in)
1950
52.8 mm (2.1 in)
1951
88.9 mm (3.5 in)
1952
45.7 mm (1.8 in)
1953
45.0 mm (1.8 in)
1954
38.1 mm (1.5 in)
1955
27.9 mm (1.1 in)
1956
22.6 mm (0.9 in)
1957
49.3 mm (1.9 in)
1958
60.5 mm (2.4 in)
1959
30.7 mm (1.2 in)
1960
38.6 mm (1.5 in)
1961
38.1 mm (1.5 in)
1962
44.2 mm (1.7 in)
1963
50.3 mm (2.0 in)
1964
55.4 mm (2.2 in)
1965
45.7 mm (1.8 in)
1966
54.1 mm (2.1 in)
1967
36.6 mm (1.4 in)
1968
36.8 mm (1.4 in)
1969
46.0 mm (1.8 in)
1970
43.2 mm (1.7 in)
1971
57.4 mm (2.3 in)
1972
46.0 mm (1.8 in)
1973
63.2 mm (2.5 in)
1974
41.7 mm (1.6 in)
1975
48.8 mm (1.9 in)
1976
50.5 mm (2.0 in)
1977
35.6 mm (1.4 in)
Wettest five days (Rx5day)
The wettest five days of the year at Glenwood, 1937 to 1977. The record is 118.9 mm (4.7 in) in 1949, marked on the chart; the median year is 76.8 mm (3.0 in).
Wettest five days (Rx5day) at Glenwood by year
Year
Wettest five days (Rx5day)
1937
71.1 mm (2.8 in)
1938
80.2 mm (3.2 in)
1939
70.1 mm (2.8 in)
1940
65.8 mm (2.6 in)
1941
96.8 mm (3.8 in)
1942
113.1 mm (4.5 in)
1943
78.0 mm (3.1 in)
1944
74.2 mm (2.9 in)
1945
67.1 mm (2.6 in)
1946
57.6 mm (2.3 in)
1947
47.3 mm (1.9 in)
1948
76.3 mm (3.0 in)
1949
118.9 mm (4.7 in)
1950
65.7 mm (2.6 in)
1951
114.5 mm (4.5 in)
1952
91.4 mm (3.6 in)
1953
90.7 mm (3.6 in)
1954
107.1 mm (4.2 in)
1955
71.4 mm (2.8 in)
1956
38.1 mm (1.5 in)
1957
78.0 mm (3.1 in)
1958
84.4 mm (3.3 in)
1959
49.9 mm (2.0 in)
1960
62.2 mm (2.4 in)
1961
58.5 mm (2.3 in)
1962
93.7 mm (3.7 in)
1963
82.4 mm (3.2 in)
1964
82.3 mm (3.2 in)
1965
74.7 mm (2.9 in)
1966
105.9 mm (4.2 in)
1967
57.2 mm (2.3 in)
1968
74.2 mm (2.9 in)
1969
76.8 mm (3.0 in)
1970
78.9 mm (3.1 in)
1971
87.8 mm (3.5 in)
1972
77.5 mm (3.1 in)
1973
77.4 mm (3.0 in)
1974
62.2 mm (2.4 in)
1975
64.0 mm (2.5 in)
1976
92.0 mm (3.6 in)
1977
63.5 mm (2.5 in)
Longest dry spell (CDD)
The longest dry spell of the year at Glenwood, 1937 to 1977. The record is 22 days in 1954, marked on the chart; the median year is 12 days.
Longest dry spell (CDD) at Glenwood by year
Year
Longest dry spell (CDD)
1937
21 days
1938
17 days
1939
12 days
1940
11 days
1941
10 days
1942
12 days
1943
17 days
1944
10 days
1945
11 days
1946
11 days
1947
17 days
1948
12 days
1949
12 days
1950
16 days
1951
13 days
1952
12 days
1953
13 days
1954
22 days
1955
11 days
1956
15 days
1957
16 days
1958
13 days
1959
10 days
1960
15 days
1961
13 days
1962
19 days
1963
7 days
1964
13 days
1965
12 days
1966
16 days
1967
10 days
1968
13 days
1969
13 days
1970
12 days
1971
11 days
1972
11 days
1973
12 days
1974
9 days
1975
15 days
1976
14 days
1977
11 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
37 years with a frost
Across 37 years with a frost, the median last spring frost at Glenwood falls on 20 June and the median first autumn frost on 25 August, which leaves a median of 64 days between them.
Fitted over all years, the growing season changes by -8.9 days per decade at this station.
Frost dates and growing season at Glenwood
Measure
Median, all years
Earliest period
Recent period (1945 to 1976)
Recent against earliest
Fitted trend
Last spring frost
20 June
n/a
21 June
n/a
+0.2 days per decade
First autumn frost
25 August
n/a
24 August
n/a
-8.7 days per decade
Growing days
64 days
n/a
62 days
n/a
-8.9 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
38 years, 1938 to 1976
A day with at least 44.2 mm (1.7 in) of rain is expected about once in 2 years. A day with at least 92.1 mm (3.6 in) of rain is expected about once in 100 years.
Rainfall return levels at Glenwood: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
44.2 mm (1.7 in)
5 years
56.9 mm (2.2 in)
10 years
65.4 mm (2.6 in)
25 years
76.2 mm (3.0 in)
50 years
84.1 mm (3.3 in)
Longer than the 38 years of record
100 years
92.1 mm (3.6 in)
Longer than the 38 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, 38 years of values from 1938 to 1976.
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: 88.9 mm (3.5 in) in 1951; 83.3 mm (3.3 in) in 1949; 77.5 mm (3.1 in) in 1942.
Download the Data
Data for Glenwood standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Glenwood 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.