Record envelope, standing records and threshold days for Halifax (CA008202200), Nova Scotia, Canada, with 36 years of record.
Key Facts for Halifax
Halifax (CA008202200) is a weather station in Nova Scotia, Canada at 44.65 latitude and -63.57 longitude, 32 m (105 ft) above sea level.
The station reports from 1939 to 1974, 36 years of record.
1,464 records set at Halifax still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
Halifax set a daily record low maximum temperature of 15.6 C (60.1 F) on 30 July 1974.
About the Station
Location: Nova Scotia, Canada, 44.65 latitude, -63.57 longitude.
Elevation: 32 m (105 ft).
Period of record: 1939 to 1974, 36 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 Halifax. 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 Halifax, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
13.9 C (57.0 F)
-25.0 C (-13.0 F)
n/a
n/a
Feb
12.2 C (54.0 F)
-23.3 C (-9.9 F)
n/a
n/a
Mar
19.4 C (66.9 F)
-19.4 C (-2.9 F)
n/a
n/a
Apr
28.3 C (82.9 F)
-10.6 C (12.9 F)
n/a
n/a
May
30.6 C (87.1 F)
-2.2 C (28.0 F)
n/a
n/a
Jun
33.3 C (91.9 F)
2.8 C (37.0 F)
n/a
n/a
Jul
33.9 C (93.0 F)
6.7 C (44.1 F)
n/a
n/a
Aug
32.8 C (91.0 F)
6.7 C (44.1 F)
n/a
n/a
Sep
34.4 C (93.9 F)
1.7 C (35.1 F)
n/a
n/a
Oct
27.8 C (82.0 F)
-3.3 C (26.1 F)
n/a
n/a
Nov
23.3 C (73.9 F)
-8.9 C (16.0 F)
n/a
n/a
Dec
15.6 C (60.1 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 Halifax still stand. 1950 holds the most, with 64.
Standing records at Halifax by the year they were set
Year set
Standing records
1939
17
1940
47
1941
40
1942
46
1943
63
1944
56
1945
52
1946
51
1947
53
1948
44
1949
61
1950
64
1951
53
1952
25
1953
60
1954
43
1955
29
1956
36
1957
47
1958
40
1959
43
1960
19
1961
38
1962
38
1963
43
1964
25
1965
31
1966
28
1967
36
1968
36
1969
38
1970
28
1971
27
1972
47
1973
36
1974
24
All-Time Record Progression
1 new records
1 all-time records were set at Halifax between 13 January 1971 and 13 January 1971. Each dot is a new record.
When Halifax set new all-time records
Date
Kind
Detail
1971-01-13
Record low maximum temperature
Record low maximum temperature -16.7 C (1.9 F)
Wettest Day of Each Month
Sep: 238.8 mm (9.4 in)
The wettest day on record for each calendar month at Halifax. The most was 238.8 mm (9.4 in) on 21 September 1942.
Record daily precipitation for each month at Halifax
Month
Record daily precipitation (mm)
Date
Jan
65.8 mm (2.6 in)
13 January 1948
Feb
60.2 mm (2.4 in)
23 February 1954
Mar
56.9 mm (2.2 in)
11 March 1943
Apr
64.5 mm (2.5 in)
27 April 1941
May
90.4 mm (3.6 in)
1 May 1947
Jun
82.3 mm (3.2 in)
21 June 1944
Jul
75.9 mm (3.0 in)
8 July 1943
Aug
185.2 mm (7.3 in)
15 August 1971
Sep
238.8 mm (9.4 in)
21 September 1942
Oct
99.6 mm (3.9 in)
10 October 1967
Nov
62.7 mm (2.5 in)
9 November 1972
Dec
74.7 mm (2.9 in)
21 December 1946
Period of Record Coverage
1939 to 1974
Complete yearUnder 90 percent of days
36 years of record at Halifax, 1939 to 1974. 2 years have data for under 90 percent of days and are left out of rankings: 1939, 1974.
Cooler than the station meanWarmer than the station mean
One stripe for each of 34 complete years at Halifax, 1940 to 1973. Blue stripes are years cooler than the station's own mean of 7.5 C (45.5 F); red stripes are warmer. The coolest year was 1940, at 6.5 C (43.8 F), and the warmest was 1953, at 8.9 C (48.0 F). The strongest colour marks a difference of 1.4 C (2.5 F).
Annual mean temperature at Halifax as warming stripes, 1940 to 1973
Year
Annual mean temperature
Difference from the station mean
1940
6.5 C
-0.96 C
1941
6.6 C
-0.86 C
1942
7.5 C
+0.04 C
1943
7.0 C
-0.53 C
1944
7.6 C
+0.11 C
1945
7.6 C
+0.12 C
1946
7.4 C
-0.06 C
1947
7.8 C
+0.32 C
1948
6.7 C
-0.82 C
1949
8.4 C
+0.86 C
1950
7.3 C
-0.23 C
1951
8.7 C
+1.18 C
1952
8.2 C
+0.66 C
1953
8.9 C
+1.40 C
1954
8.1 C
+0.63 C
1955
7.3 C
-0.20 C
1956
7.5 C
-0.02 C
1957
7.7 C
+0.24 C
1958
7.7 C
+0.21 C
1959
7.6 C
+0.09 C
1960
8.2 C
+0.65 C
1961
7.4 C
-0.12 C
1962
6.8 C
-0.72 C
1963
7.0 C
-0.50 C
1964
7.1 C
-0.38 C
1965
6.7 C
-0.79 C
1966
7.8 C
+0.32 C
1967
7.1 C
-0.45 C
1968
7.5 C
0.00 C
1969
8.3 C
+0.80 C
1970
7.2 C
-0.35 C
1971
7.5 C
-0.01 C
1972
6.7 C
-0.83 C
1973
7.8 C
+0.25 C
The fitted trend in annual mean temperature here over 1940 to 1973 is -0.01 C (-0.22 to 0.21) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.01 F (-0.40 to 0.37) 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 Halifax
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.01 C (-0.22 to 0.21) per decade
-0.01 F (-0.40 to 0.37) per decade
1940 to 1973
34
Not clearly different from zero
Mean daily maximum
-0.1 C (-0.3 to 0.1) per decade
-0.2 F (-0.6 to 0.1) per decade
1940 to 1973
34
Not clearly different from zero
Mean daily minimum
0.1 C (-0.1 to 0.3) per decade
0.2 F (-0.2 to 0.6) per decade
1940 to 1973
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
1939 to 1974
Yearly extremes at Halifax: 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)
1945
31.1 C (88.0 F)
36
Coldest night (TNn)
-25.0 C (-13.0 F)
1951
-20.0 C (-4.0 F)
36
Wettest day (Rx1day)
238.8 mm (9.4 in)
1942
62.4 mm (2.5 in)
36
Wettest five days (Rx5day)
253.5 mm (10.0 in)
1971
88.1 mm (3.5 in)
36
Longest dry spell (CDD)
26 days
1947
15 days
36
Hottest day (TXx)
The hottest day of the year at Halifax, 1939 to 1974. The record is 34.4 C (93.9 F) in 1945, marked on the chart; the median year is 31.1 C (88.0 F).
Hottest day (TXx) at Halifax by year
Year
Hottest day (TXx)
1939
29.4 C (84.9 F)
1940
31.7 C (89.1 F)
1941
33.3 C (91.9 F)
1942
31.7 C (89.1 F)
1943
32.8 C (91.0 F)
1944
32.8 C (91.0 F)
1945
34.4 C (93.9 F)
1946
32.2 C (90.0 F)
1947
32.8 C (91.0 F)
1948
30.6 C (87.1 F)
1949
31.1 C (88.0 F)
1950
30.6 C (87.1 F)
1951
31.1 C (88.0 F)
1952
31.7 C (89.1 F)
1953
31.7 C (89.1 F)
1954
30.6 C (87.1 F)
1955
31.7 C (89.1 F)
1956
30.0 C (86.0 F)
1957
31.1 C (88.0 F)
1958
29.4 C (84.9 F)
1959
30.6 C (87.1 F)
1960
30.0 C (86.0 F)
1961
31.1 C (88.0 F)
1962
30.0 C (86.0 F)
1963
33.9 C (93.0 F)
1964
29.4 C (84.9 F)
1965
29.4 C (84.9 F)
1966
28.9 C (84.0 F)
1967
30.0 C (86.0 F)
1968
33.3 C (91.9 F)
1969
32.2 C (90.0 F)
1970
31.7 C (89.1 F)
1971
30.6 C (87.1 F)
1972
28.3 C (82.9 F)
1973
33.3 C (91.9 F)
1974
29.4 C (84.9 F)
Coldest night (TNn)
The coldest night of the year at Halifax, 1939 to 1974. The record is -25.0 C (-13.0 F) in 1951, marked on the chart; the median year is -20.0 C (-4.0 F).
Coldest night (TNn) at Halifax by year
Year
Coldest night (TNn)
1939
-13.3 C (8.1 F)
1940
-15.6 C (3.9 F)
1941
-17.8 C (0.0 F)
1942
-20.6 C (-5.1 F)
1943
-23.3 C (-9.9 F)
1944
-18.9 C (-2.0 F)
1945
-17.8 C (0.0 F)
1946
-21.1 C (-6.0 F)
1947
-16.7 C (1.9 F)
1948
-22.2 C (-8.0 F)
1949
-17.8 C (0.0 F)
1950
-21.1 C (-6.0 F)
1951
-25.0 C (-13.0 F)
1952
-16.1 C (3.0 F)
1953
-13.9 C (7.0 F)
1954
-20.0 C (-4.0 F)
1955
-21.1 C (-6.0 F)
1956
-15.0 C (5.0 F)
1957
-22.2 C (-8.0 F)
1958
-16.7 C (1.9 F)
1959
-21.1 C (-6.0 F)
1960
-18.9 C (-2.0 F)
1961
-18.9 C (-2.0 F)
1962
-21.1 C (-6.0 F)
1963
-18.3 C (-0.9 F)
1964
-16.7 C (1.9 F)
1965
-20.6 C (-5.1 F)
1966
-20.0 C (-4.0 F)
1967
-23.3 C (-9.9 F)
1968
-20.6 C (-5.1 F)
1969
-15.0 C (5.0 F)
1970
-16.7 C (1.9 F)
1971
-21.7 C (-7.1 F)
1972
-21.7 C (-7.1 F)
1973
-20.6 C (-5.1 F)
1974
-21.1 C (-6.0 F)
Wettest day (Rx1day)
The wettest day of the year at Halifax, 1939 to 1974. The record is 238.8 mm (9.4 in) in 1942, marked on the chart; the median year is 62.4 mm (2.5 in).
Wettest day (Rx1day) at Halifax by year
Year
Wettest day (Rx1day)
1939
62.7 mm (2.5 in)
1940
52.8 mm (2.1 in)
1941
67.8 mm (2.7 in)
1942
238.8 mm (9.4 in)
1943
91.7 mm (3.6 in)
1944
82.3 mm (3.2 in)
1945
51.8 mm (2.0 in)
1946
76.7 mm (3.0 in)
1947
90.4 mm (3.6 in)
1948
65.8 mm (2.6 in)
1949
58.7 mm (2.3 in)
1950
51.6 mm (2.0 in)
1951
49.8 mm (2.0 in)
1952
61.5 mm (2.4 in)
1953
62.2 mm (2.4 in)
1954
74.2 mm (2.9 in)
1955
46.0 mm (1.8 in)
1956
40.1 mm (1.6 in)
1957
43.7 mm (1.7 in)
1958
59.2 mm (2.3 in)
1959
62.5 mm (2.5 in)
1960
45.0 mm (1.8 in)
1961
66.0 mm (2.6 in)
1962
64.3 mm (2.5 in)
1963
69.9 mm (2.8 in)
1964
63.5 mm (2.5 in)
1965
50.5 mm (2.0 in)
1966
36.3 mm (1.4 in)
1967
99.6 mm (3.9 in)
1968
38.1 mm (1.5 in)
1969
57.4 mm (2.3 in)
1970
63.2 mm (2.5 in)
1971
185.2 mm (7.3 in)
1972
62.7 mm (2.5 in)
1973
45.0 mm (1.8 in)
1974
37.1 mm (1.5 in)
Wettest five days (Rx5day)
The wettest five days of the year at Halifax, 1939 to 1974. The record is 253.5 mm (10.0 in) in 1971, marked on the chart; the median year is 88.1 mm (3.5 in).
Wettest five days (Rx5day) at Halifax by year
Year
Wettest five days (Rx5day)
1939
97.8 mm (3.9 in)
1940
80.0 mm (3.1 in)
1941
122.1 mm (4.8 in)
1942
246.9 mm (9.7 in)
1943
139.4 mm (5.5 in)
1944
106.1 mm (4.2 in)
1945
103.2 mm (4.1 in)
1946
96.3 mm (3.8 in)
1947
140.9 mm (5.5 in)
1948
111.6 mm (4.4 in)
1949
66.6 mm (2.6 in)
1950
78.5 mm (3.1 in)
1951
85.8 mm (3.4 in)
1952
74.0 mm (2.9 in)
1953
126.7 mm (5.0 in)
1954
90.0 mm (3.5 in)
1955
69.0 mm (2.7 in)
1956
113.3 mm (4.5 in)
1957
75.7 mm (3.0 in)
1958
87.1 mm (3.4 in)
1959
105.9 mm (4.2 in)
1960
109.3 mm (4.3 in)
1961
131.0 mm (5.2 in)
1962
76.0 mm (3.0 in)
1963
76.8 mm (3.0 in)
1964
87.1 mm (3.4 in)
1965
77.3 mm (3.0 in)
1966
58.6 mm (2.3 in)
1967
138.5 mm (5.5 in)
1968
65.5 mm (2.6 in)
1969
83.8 mm (3.3 in)
1970
79.0 mm (3.1 in)
1971
253.5 mm (10.0 in)
1972
84.9 mm (3.3 in)
1973
89.1 mm (3.5 in)
1974
65.3 mm (2.6 in)
Longest dry spell (CDD)
The longest dry spell of the year at Halifax, 1939 to 1974. The record is 26 days in 1947, marked on the chart; the median year is 15 days.
Longest dry spell (CDD) at Halifax by year
Year
Longest dry spell (CDD)
1939
15 days
1940
15 days
1941
15 days
1942
15 days
1943
9 days
1944
24 days
1945
15 days
1946
10 days
1947
26 days
1948
10 days
1949
15 days
1950
15 days
1951
13 days
1952
11 days
1953
15 days
1954
16 days
1955
14 days
1956
15 days
1957
12 days
1958
16 days
1959
10 days
1960
18 days
1961
17 days
1962
13 days
1963
12 days
1964
15 days
1965
14 days
1966
17 days
1967
13 days
1968
15 days
1969
17 days
1970
14 days
1971
17 days
1972
11 days
1973
15 days
1974
12 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 Halifax falls on 1 May and the median first autumn frost on 30 October, which leaves a median of 185 days between them.
Fitted over all years, the growing season changes by +1.2 days per decade at this station.
Frost dates and growing season at Halifax
Measure
Median, all years
Earliest period
Recent period (1944 to 1973)
Recent against earliest
Fitted trend
Last spring frost
1 May
n/a
1 May
n/a
-1.2 days per decade
First autumn frost
30 October
n/a
30 October
n/a
0.0 days per decade
Growing days
185 days
n/a
185 days
n/a
+1.2 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, 1940 to 1973
A day with at least 57.9 mm (2.3 in) of rain is expected about once in 2 years. A day with at least 243.7 mm (9.6 in) of rain is expected about once in 100 years.
Rainfall return levels at Halifax: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
57.9 mm (2.3 in)
5 years
80.8 mm (3.2 in)
10 years
103.2 mm (4.1 in)
25 years
143.9 mm (5.7 in)
50 years
186.6 mm (7.3 in)
Longer than the 33 years of record
100 years
243.7 mm (9.6 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 1940 to 1973.
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: 238.8 mm (9.4 in) in 1942; 185.2 mm (7.3 in) in 1971; 99.6 mm (3.9 in) in 1967.
Download the Data
Data for Halifax standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Halifax 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.