Record envelope, standing records and threshold days for Upper Stewiacke (CA008206200), Nova Scotia, Canada, with 91 years of record.
Key Facts for Upper Stewiacke
Upper Stewiacke (CA008206200) is a weather station in Nova Scotia, Canada at 45.22 latitude and -63.00 longitude, 23 m (75 ft) above sea level.
The station reports from 1915 to 2005, 91 years of record.
1,464 records set at Upper Stewiacke still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
Upper Stewiacke set a daily record low maximum temperature of -12.0 C (10.4 F) on 25 December 1983.
About the Station
Location: Nova Scotia, Canada, 45.22 latitude, -63.00 longitude.
Elevation: 23 m (75 ft).
Period of record: 1915 to 2005, 91 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 Upper Stewiacke. 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 Upper Stewiacke, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
15.6 C (60.1 F)
-41.1 C (-42.0 F)
n/a
n/a
Feb
16.7 C (62.1 F)
-38.9 C (-38.0 F)
n/a
n/a
Mar
20.6 C (69.1 F)
-30.0 C (-22.0 F)
n/a
n/a
Apr
27.2 C (81.0 F)
-16.7 C (1.9 F)
n/a
n/a
May
32.2 C (90.0 F)
-8.3 C (17.1 F)
n/a
n/a
Jun
34.4 C (93.9 F)
-3.9 C (25.0 F)
n/a
n/a
Jul
35.0 C (95.0 F)
-1.7 C (28.9 F)
n/a
n/a
Aug
36.1 C (97.0 F)
-1.7 C (28.9 F)
n/a
n/a
Sep
33.3 C (91.9 F)
-7.2 C (19.0 F)
n/a
n/a
Oct
29.4 C (84.9 F)
-10.0 C (14.0 F)
n/a
n/a
Nov
21.7 C (71.1 F)
-24.4 C (-11.9 F)
n/a
n/a
Dec
17.8 C (64.0 F)
-31.7 C (-25.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Upper Stewiacke still stand. 1979 holds the most, with 46.
Standing records at Upper Stewiacke by the year they were set
Year set
Standing records
1916
29
1917
21
1918
34
1919
19
1920
33
1921
41
1922
22
1923
37
1924
17
1925
28
1926
21
1927
33
1928
12
1929
23
1930
27
1931
13
1932
12
1933
21
1934
20
1935
18
1936
27
1937
25
1938
13
1939
19
1940
19
1941
19
1942
24
1943
24
1944
22
1945
26
1946
17
1947
32
1948
24
1949
24
1950
13
1951
22
1952
8
1953
21
1954
18
1955
14
1956
27
1957
26
1958
16
1959
18
1960
17
1961
18
1962
20
1963
21
1964
15
1965
21
1966
18
1967
28
1968
23
1969
18
1970
20
1971
17
1972
18
1973
21
1974
24
1975
18
1976
20
1977
17
1978
13
1979
46
1980
18
1981
23
1982
16
1983
15
All-Time Record Progression
4 new records
4 all-time records were set at Upper Stewiacke between 4 January 1961 and 27 July 1979. Each dot is a new record.
When Upper Stewiacke set new all-time records
Date
Kind
Detail
1961-01-04
Record daily snowfall
Record daily snowfall 55.9 cm (22.0 in)
1967-10-10
Record daily precipitation
Record daily precipitation 90.4 mm (3.6 in)
1971-08-15
Record daily precipitation
Record daily precipitation 132.6 mm (5.2 in)
1979-07-27
Record high minimum temperature
Record high minimum temperature 24.0 C (75.2 F)
Wettest Day of Each Month
Aug: 132.6 mm (5.2 in)
The wettest day on record for each calendar month at Upper Stewiacke. The most was 132.6 mm (5.2 in) on 15 August 1971.
Record daily precipitation for each month at Upper Stewiacke
Month
Record daily precipitation (mm)
Date
Jan
77.7 mm (3.1 in)
14 January 1978
Feb
61.0 mm (2.4 in)
7 February 1920
Mar
44.5 mm (1.8 in)
31 March 1966
Apr
64.4 mm (2.5 in)
28 April 1982
May
54.6 mm (2.1 in)
28 May 1952
Jun
54.9 mm (2.2 in)
19 June 1959
Jul
85.9 mm (3.4 in)
11 July 1970
Aug
132.6 mm (5.2 in)
15 August 1971
Sep
82.3 mm (3.2 in)
20 September 1936
Oct
90.4 mm (3.6 in)
10 October 1967
Nov
69.9 mm (2.8 in)
7 November 1934
Dec
81.3 mm (3.2 in)
8 December 1928
Period of Record Coverage
1915 to 1983
Complete yearUnder 90 percent of days
69 years of record at Upper Stewiacke, 1915 to 1983. 4 years have data for under 90 percent of days and are left out of rankings: 1915, 1916, 1950, 1964.
Cooler than the station meanWarmer than the station mean
One stripe for each of 61 complete years at Upper Stewiacke, 1917 to 1983. Blue stripes are years cooler than the station's own mean of 5.9 C (42.6 F); red stripes are warmer. The coolest year was 1917, at 4.3 C (39.8 F), and the warmest was 1927, at 7.2 C (45.0 F). The strongest colour marks a difference of 1.6 C (2.9 F).
Annual mean temperature at Upper Stewiacke as warming stripes, 1917 to 1983
Year
Annual mean temperature
Difference from the station mean
1917
4.3 C
-1.54 C
1918
4.4 C
-1.53 C
1919
5.4 C
-0.52 C
1920
5.1 C
-0.83 C
1921
5.3 C
-0.61 C
1922
5.1 C
-0.80 C
1923
4.5 C
-1.41 C
1924
5.7 C
-0.21 C
1925
6.0 C
+0.14 C
1926
5.1 C
-0.76 C
1927
7.2 C
+1.35 C
1928
6.4 C
+0.55 C
1929
5.7 C
-0.21 C
1930
6.3 C
+0.37 C
1931
6.7 C
+0.86 C
1932
6.0 C
+0.13 C
1933
6.2 C
+0.29 C
1934
5.7 C
-0.23 C
1935
5.6 C
-0.32 C
1936
6.2 C
+0.31 C
1937
6.8 C
+0.96 C
1938
6.4 C
+0.50 C
1939
5.4 C
-0.45 C
1940
5.0 C
-0.93 C
1942
5.5 C
-0.39 C
1943
4.5 C
-1.35 C
1944
5.2 C
-0.65 C
1945
5.8 C
-0.08 C
1946
6.2 C
+0.29 C
1947
6.5 C
+0.59 C
1948
5.4 C
-0.53 C
1949
6.8 C
+0.90 C
1951
7.2 C
+1.28 C
1952
6.8 C
+0.92 C
1953
7.2 C
+1.29 C
1954
6.7 C
+0.78 C
1955
5.5 C
-0.36 C
1956
5.2 C
-0.69 C
1957
5.4 C
-0.45 C
1959
6.0 C
+0.16 C
1960
6.6 C
+0.70 C
1961
5.8 C
-0.09 C
1962
5.3 C
-0.56 C
1963
5.5 C
-0.40 C
1965
5.1 C
-0.77 C
1966
6.5 C
+0.64 C
1967
5.8 C
-0.07 C
1968
5.7 C
-0.20 C
1969
7.0 C
+1.14 C
1970
5.7 C
-0.16 C
1971
6.2 C
+0.29 C
1972
5.0 C
-0.84 C
1973
6.3 C
+0.45 C
1974
5.4 C
-0.52 C
1975
5.7 C
-0.21 C
1977
6.2 C
+0.33 C
1978
5.3 C
-0.63 C
1979
7.1 C
+1.20 C
1981
7.0 C
+1.16 C
1982
6.1 C
+0.18 C
1983
7.2 C
+1.28 C
The annual mean temperature here has risen by 0.12 C (0.03 to 0.22) per decade over 1917 to 1983. In Fahrenheit: 0.22 F (0.05 to 0.39) per decade. The slope is a straight line fitted to 61 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Upper Stewiacke
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.12 C (0.03 to 0.22) per decade
0.22 F (0.05 to 0.39) per decade
1917 to 1983
61
Rise
Mean daily maximum
-0.06 C (-0.16 to 0.04) per decade
-0.1 F (-0.3 to 0.1) per decade
1917 to 1983
61
Not clearly different from zero
Mean daily minimum
0.3 C (0.2 to 0.4) per decade
0.5 F (0.3 to 0.7) per decade
1917 to 1983
61
Rise
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
1915 to 1983
Yearly extremes at Upper Stewiacke: 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)
1935
31.7 C (89.1 F)
69
Coldest night (TNn)
-41.1 C (-42.0 F)
1920
-28.9 C (-20.0 F)
69
Wettest day (Rx1day)
132.6 mm (5.2 in)
1971
50.3 mm (2.0 in)
69
Wettest five days (Rx5day)
199.6 mm (7.9 in)
1971
78.4 mm (3.1 in)
69
Longest dry spell (CDD)
24 days
1944
14 days
69
Hottest day (TXx)
The hottest day of the year at Upper Stewiacke, 1915 to 1983. The record is 36.1 C (97.0 F) in 1935, marked on the chart; the median year is 31.7 C (89.1 F).
Hottest day (TXx) at Upper Stewiacke by year
Year
Hottest day (TXx)
1915
13.3 C (55.9 F)
1916
31.1 C (88.0 F)
1917
32.2 C (90.0 F)
1918
31.7 C (89.1 F)
1919
32.2 C (90.0 F)
1920
31.7 C (89.1 F)
1921
32.2 C (90.0 F)
1922
31.1 C (88.0 F)
1923
28.3 C (82.9 F)
1924
31.1 C (88.0 F)
1925
32.2 C (90.0 F)
1926
32.2 C (90.0 F)
1927
32.2 C (90.0 F)
1928
35.0 C (95.0 F)
1929
32.2 C (90.0 F)
1930
33.3 C (91.9 F)
1931
31.1 C (88.0 F)
1932
31.1 C (88.0 F)
1933
32.8 C (91.0 F)
1934
30.0 C (86.0 F)
1935
36.1 C (97.0 F)
1936
28.9 C (84.0 F)
1937
32.2 C (90.0 F)
1938
32.2 C (90.0 F)
1939
32.2 C (90.0 F)
1940
32.2 C (90.0 F)
1941
32.8 C (91.0 F)
1942
33.3 C (91.9 F)
1943
33.3 C (91.9 F)
1944
36.1 C (97.0 F)
1945
31.7 C (89.1 F)
1946
32.2 C (90.0 F)
1947
34.4 C (93.9 F)
1948
31.7 C (89.1 F)
1949
35.0 C (95.0 F)
1950
30.0 C (86.0 F)
1951
31.1 C (88.0 F)
1952
33.3 C (91.9 F)
1953
30.0 C (86.0 F)
1954
30.0 C (86.0 F)
1955
31.7 C (89.1 F)
1956
28.9 C (84.0 F)
1957
30.6 C (87.1 F)
1958
28.9 C (84.0 F)
1959
31.7 C (89.1 F)
1960
33.3 C (91.9 F)
1961
31.1 C (88.0 F)
1962
31.1 C (88.0 F)
1963
33.3 C (91.9 F)
1964
29.4 C (84.9 F)
1965
30.6 C (87.1 F)
1966
30.0 C (86.0 F)
1967
30.0 C (86.0 F)
1968
31.7 C (89.1 F)
1969
31.7 C (89.1 F)
1970
32.2 C (90.0 F)
1971
31.1 C (88.0 F)
1972
30.6 C (87.1 F)
1973
31.7 C (89.1 F)
1974
31.1 C (88.0 F)
1975
36.1 C (97.0 F)
1976
32.8 C (91.0 F)
1977
32.2 C (90.0 F)
1978
32.2 C (90.0 F)
1979
31.7 C (89.1 F)
1980
32.0 C (89.6 F)
1981
29.5 C (85.1 F)
1982
32.5 C (90.5 F)
1983
32.0 C (89.6 F)
Coldest night (TNn)
The coldest night of the year at Upper Stewiacke, 1915 to 1983. The record is -41.1 C (-42.0 F) in 1920, marked on the chart; the median year is -28.9 C (-20.0 F).
Coldest night (TNn) at Upper Stewiacke by year
Year
Coldest night (TNn)
1915
-3.9 C (25.0 F)
1916
-24.4 C (-11.9 F)
1917
-34.4 C (-29.9 F)
1918
-32.8 C (-27.0 F)
1919
-26.1 C (-15.0 F)
1920
-41.1 C (-42.0 F)
1921
-33.3 C (-27.9 F)
1922
-38.9 C (-38.0 F)
1923
-34.4 C (-29.9 F)
1924
-28.3 C (-18.9 F)
1925
-36.1 C (-33.0 F)
1926
-29.4 C (-20.9 F)
1927
-29.4 C (-20.9 F)
1928
-31.7 C (-25.1 F)
1929
-29.4 C (-20.9 F)
1930
-28.9 C (-20.0 F)
1931
-28.9 C (-20.0 F)
1932
-27.8 C (-18.0 F)
1933
-30.0 C (-22.0 F)
1934
-36.7 C (-34.1 F)
1935
-29.4 C (-20.9 F)
1936
-25.6 C (-14.1 F)
1937
-28.3 C (-18.9 F)
1938
-30.6 C (-23.1 F)
1939
-28.3 C (-18.9 F)
1940
-27.8 C (-18.0 F)
1941
-27.8 C (-18.0 F)
1942
-31.1 C (-24.0 F)
1943
-28.9 C (-20.0 F)
1944
-27.2 C (-17.0 F)
1945
-31.7 C (-25.1 F)
1946
-30.0 C (-22.0 F)
1947
-24.4 C (-11.9 F)
1948
-31.1 C (-24.0 F)
1949
-25.6 C (-14.1 F)
1950
-30.6 C (-23.1 F)
1951
-30.6 C (-23.1 F)
1952
-26.7 C (-16.1 F)
1953
-20.0 C (-4.0 F)
1954
-27.2 C (-17.0 F)
1955
-28.9 C (-20.0 F)
1956
-27.8 C (-18.0 F)
1957
-33.9 C (-29.0 F)
1958
-24.4 C (-11.9 F)
1959
-24.4 C (-11.9 F)
1960
-25.6 C (-14.1 F)
1961
-33.9 C (-29.0 F)
1962
-30.6 C (-23.1 F)
1963
-30.6 C (-23.1 F)
1964
-30.6 C (-23.1 F)
1965
-30.6 C (-23.1 F)
1966
-29.4 C (-20.9 F)
1967
-28.9 C (-20.0 F)
1968
-32.2 C (-26.0 F)
1969
-20.6 C (-5.1 F)
1970
-30.6 C (-23.1 F)
1971
-33.3 C (-27.9 F)
1972
-28.3 C (-18.9 F)
1973
-28.3 C (-18.9 F)
1974
-28.9 C (-20.0 F)
1975
-33.3 C (-27.9 F)
1976
-25.6 C (-14.1 F)
1977
-23.9 C (-11.0 F)
1978
-26.7 C (-16.1 F)
1979
-25.6 C (-14.1 F)
1980
-31.5 C (-24.7 F)
1981
-36.5 C (-33.7 F)
1982
-27.5 C (-17.5 F)
1983
-25.5 C (-13.9 F)
Wettest day (Rx1day)
The wettest day of the year at Upper Stewiacke, 1915 to 1983. The record is 132.6 mm (5.2 in) in 1971, marked on the chart; the median year is 50.3 mm (2.0 in).
Wettest day (Rx1day) at Upper Stewiacke by year
Year
Wettest day (Rx1day)
1915
34.3 mm (1.4 in)
1916
39.4 mm (1.6 in)
1917
59.4 mm (2.3 in)
1918
60.7 mm (2.4 in)
1919
61.7 mm (2.4 in)
1920
61.0 mm (2.4 in)
1921
40.6 mm (1.6 in)
1922
54.6 mm (2.1 in)
1923
66.0 mm (2.6 in)
1924
66.3 mm (2.6 in)
1925
38.1 mm (1.5 in)
1926
49.8 mm (2.0 in)
1927
49.3 mm (1.9 in)
1928
81.3 mm (3.2 in)
1929
81.3 mm (3.2 in)
1930
55.1 mm (2.2 in)
1931
41.1 mm (1.6 in)
1932
26.7 mm (1.1 in)
1933
61.0 mm (2.4 in)
1934
69.9 mm (2.8 in)
1935
77.0 mm (3.0 in)
1936
82.3 mm (3.2 in)
1937
47.8 mm (1.9 in)
1938
49.3 mm (1.9 in)
1939
57.2 mm (2.3 in)
1940
41.1 mm (1.6 in)
1941
26.2 mm (1.0 in)
1942
57.9 mm (2.3 in)
1943
27.9 mm (1.1 in)
1944
31.0 mm (1.2 in)
1945
45.0 mm (1.8 in)
1946
34.3 mm (1.4 in)
1947
43.7 mm (1.7 in)
1948
47.0 mm (1.9 in)
1949
76.2 mm (3.0 in)
1950
54.9 mm (2.2 in)
1951
38.1 mm (1.5 in)
1952
54.6 mm (2.1 in)
1953
62.2 mm (2.4 in)
1954
41.4 mm (1.6 in)
1955
49.0 mm (1.9 in)
1956
47.8 mm (1.9 in)
1957
40.6 mm (1.6 in)
1958
50.3 mm (2.0 in)
1959
54.9 mm (2.2 in)
1960
36.8 mm (1.4 in)
1961
55.9 mm (2.2 in)
1962
59.4 mm (2.3 in)
1963
37.1 mm (1.5 in)
1964
56.9 mm (2.2 in)
1965
47.8 mm (1.9 in)
1966
44.5 mm (1.8 in)
1967
90.4 mm (3.6 in)
1968
42.4 mm (1.7 in)
1969
52.8 mm (2.1 in)
1970
85.9 mm (3.4 in)
1971
132.6 mm (5.2 in)
1972
57.7 mm (2.3 in)
1973
47.5 mm (1.9 in)
1974
41.4 mm (1.6 in)
1975
66.0 mm (2.6 in)
1976
47.2 mm (1.9 in)
1977
58.4 mm (2.3 in)
1978
77.7 mm (3.1 in)
1979
44.0 mm (1.7 in)
1980
40.0 mm (1.6 in)
1981
49.4 mm (1.9 in)
1982
64.4 mm (2.5 in)
1983
63.8 mm (2.5 in)
Wettest five days (Rx5day)
The wettest five days of the year at Upper Stewiacke, 1915 to 1983. The record is 199.6 mm (7.9 in) in 1971, marked on the chart; the median year is 78.4 mm (3.1 in).
Wettest five days (Rx5day) at Upper Stewiacke by year
Year
Wettest five days (Rx5day)
1915
86.4 mm (3.4 in)
1916
76.2 mm (3.0 in)
1917
105.2 mm (4.1 in)
1918
75.9 mm (3.0 in)
1919
63.7 mm (2.5 in)
1920
68.6 mm (2.7 in)
1921
66.1 mm (2.6 in)
1922
82.3 mm (3.2 in)
1923
81.0 mm (3.2 in)
1924
91.2 mm (3.6 in)
1925
60.5 mm (2.4 in)
1926
60.0 mm (2.4 in)
1927
69.6 mm (2.7 in)
1928
92.4 mm (3.6 in)
1929
129.1 mm (5.1 in)
1930
85.8 mm (3.4 in)
1931
62.3 mm (2.5 in)
1932
47.8 mm (1.9 in)
1933
78.5 mm (3.1 in)
1934
102.6 mm (4.0 in)
1935
126.0 mm (5.0 in)
1936
98.1 mm (3.9 in)
1937
49.8 mm (2.0 in)
1938
63.3 mm (2.5 in)
1939
57.2 mm (2.3 in)
1940
47.5 mm (1.9 in)
1941
64.0 mm (2.5 in)
1942
70.7 mm (2.8 in)
1943
37.9 mm (1.5 in)
1944
38.6 mm (1.5 in)
1945
78.8 mm (3.1 in)
1946
45.2 mm (1.8 in)
1947
63.0 mm (2.5 in)
1948
53.6 mm (2.1 in)
1949
85.6 mm (3.4 in)
1950
54.9 mm (2.2 in)
1951
62.2 mm (2.4 in)
1952
68.3 mm (2.7 in)
1953
86.6 mm (3.4 in)
1954
64.5 mm (2.5 in)
1955
57.4 mm (2.3 in)
1956
131.6 mm (5.2 in)
1957
93.7 mm (3.7 in)
1958
75.5 mm (3.0 in)
1959
80.8 mm (3.2 in)
1960
57.4 mm (2.3 in)
1961
67.3 mm (2.6 in)
1962
92.7 mm (3.6 in)
1963
57.2 mm (2.3 in)
1964
75.1 mm (3.0 in)
1965
73.1 mm (2.9 in)
1966
53.1 mm (2.1 in)
1967
147.8 mm (5.8 in)
1968
83.6 mm (3.3 in)
1969
155.2 mm (6.1 in)
1970
87.9 mm (3.5 in)
1971
199.6 mm (7.9 in)
1972
103.7 mm (4.1 in)
1973
103.4 mm (4.1 in)
1974
81.0 mm (3.2 in)
1975
94.8 mm (3.7 in)
1976
78.9 mm (3.1 in)
1977
90.4 mm (3.6 in)
1978
120.6 mm (4.7 in)
1979
96.4 mm (3.8 in)
1980
68.3 mm (2.7 in)
1981
78.4 mm (3.1 in)
1982
99.4 mm (3.9 in)
1983
85.6 mm (3.4 in)
Longest dry spell (CDD)
The longest dry spell of the year at Upper Stewiacke, 1915 to 1983. The record is 24 days in 1944, marked on the chart; the median year is 14 days.
Longest dry spell (CDD) at Upper Stewiacke by year
Year
Longest dry spell (CDD)
1915
7 days
1916
9 days
1917
11 days
1918
14 days
1919
10 days
1920
23 days
1921
17 days
1922
11 days
1923
14 days
1924
14 days
1925
21 days
1926
23 days
1927
10 days
1928
14 days
1929
12 days
1930
19 days
1931
10 days
1932
14 days
1933
10 days
1934
17 days
1935
9 days
1936
7 days
1937
16 days
1938
17 days
1939
14 days
1940
12 days
1941
9 days
1942
17 days
1943
10 days
1944
24 days
1945
13 days
1946
13 days
1947
23 days
1948
10 days
1949
12 days
1950
17 days
1951
14 days
1952
16 days
1953
15 days
1954
22 days
1955
11 days
1956
15 days
1957
13 days
1958
11 days
1959
13 days
1960
19 days
1961
18 days
1962
19 days
1963
15 days
1964
19 days
1965
15 days
1966
8 days
1967
13 days
1968
16 days
1969
13 days
1970
19 days
1971
15 days
1972
11 days
1973
13 days
1974
19 days
1975
17 days
1976
11 days
1977
9 days
1978
17 days
1979
19 days
1980
22 days
1981
12 days
1982
19 days
1983
17 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
61 years with a frost
Across 61 years with a frost, the median last spring frost at Upper Stewiacke falls on 11 June and the median first autumn frost on 10 September, which leaves a median of 92 days between them.
In 1949 to 1983 the median growing season was 90 days. That is 3 days fewer than in 1917 to 1947.
Fitted over all years, the growing season changes by +1.7 days per decade at this station.
Frost dates and growing season at Upper Stewiacke
Measure
Median, all years
Earliest period (1917 to 1947)
Recent period (1949 to 1983)
Recent against earliest
Fitted trend
Last spring frost
11 June
11 June
12 June
1 day later
-0.2 days per decade
First autumn frost
10 September
9 September
11 September
2 days later
+1.6 days per decade
Growing days
92 days
93 days
90 days
3 days fewer
+1.7 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
48 years, 1917 to 1983
A day with at least 54.3 mm (2.1 in) of rain is expected about once in 2 years. A day with at least 117.7 mm (4.6 in) of rain is expected about once in 100 years.
Rainfall return levels at Upper Stewiacke: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
54.3 mm (2.1 in)
5 years
70.0 mm (2.8 in)
10 years
80.8 mm (3.2 in)
25 years
95.2 mm (3.7 in)
50 years
106.3 mm (4.2 in)
Longer than the 48 years of record
100 years
117.7 mm (4.6 in)
Longer than the 48 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, 48 years of values from 1917 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: 132.6 mm (5.2 in) in 1971; 90.4 mm (3.6 in) in 1967; 85.9 mm (3.4 in) in 1970.
Station Changes
3 suspected
3 changes were suspected in the annual mean temperature of Upper Stewiacke, at 1924, 1939 and 1946. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1924 ran 0.6 C (1.1 F) higher than in the years before (likely change).
Relative to 5 neighbouring stations, the station's annual mean temperature from 1939 ran 0.7 C (1.3 F) lower than in the years before (possible change).
Relative to 5 neighbouring stations, the station's annual mean temperature from 1946 ran 0.3 C (0.6 F) higher than in the years before (possible change).
Suspected changes in the annual mean temperature at Upper Stewiacke, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1924
+0.6
+1.1
likely
5
1939
-0.7
-1.3
possible
5
1946
+0.3
+0.6
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 Upper Stewiacke standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Upper Stewiacke 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.