Record envelope, standing records and threshold days for Fredericton Unb (CA008101700), New Brunswick, Canada, with 82 years of record.
Key Facts for Fredericton Unb
Fredericton Unb (CA008101700) is a weather station in New Brunswick, Canada at 45.95 latitude and -66.60 longitude, 50 m (164 ft) above sea level.
The station reports from 1871 to 1952, 82 years of record.
1,464 records set at Fredericton Unb still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
Fredericton Unb set a daily record high maximum temperature of 27.8 C (82.0 F) on 29 September 1952.
About the Station
Location: New Brunswick, Canada, 45.95 latitude, -66.60 longitude.
Elevation: 50 m (164 ft).
Period of record: 1871 to 1952, 82 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 Fredericton Unb. 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 Fredericton Unb, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
12.8 C (55.0 F)
-37.2 C (-35.0 F)
n/a
n/a
Feb
11.7 C (53.1 F)
-37.2 C (-35.0 F)
n/a
n/a
Mar
21.1 C (70.0 F)
-32.8 C (-27.0 F)
n/a
n/a
Apr
28.3 C (82.9 F)
-20.6 C (-5.1 F)
n/a
n/a
May
33.9 C (93.0 F)
-4.4 C (24.1 F)
n/a
n/a
Jun
36.1 C (97.0 F)
-2.8 C (27.0 F)
n/a
n/a
Jul
35.6 C (96.1 F)
3.3 C (37.9 F)
n/a
n/a
Aug
38.3 C (100.9 F)
1.7 C (35.1 F)
n/a
n/a
Sep
33.3 C (91.9 F)
-5.0 C (23.0 F)
n/a
n/a
Oct
28.9 C (84.0 F)
-10.6 C (12.9 F)
n/a
n/a
Nov
21.1 C (70.0 F)
-26.7 C (-16.1 F)
n/a
n/a
Dec
15.6 C (60.1 F)
-35.6 C (-32.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Fredericton Unb still stand. 1921 holds the most, with 35.
Standing records at Fredericton Unb by the year they were set
Year set
Standing records
1871
1
1872
10
1874
21
1875
21
1876
18
1877
15
1878
19
1879
27
1880
26
1881
20
1882
15
1883
20
1884
30
1885
20
1886
19
1887
18
1888
25
1889
20
1890
19
1891
14
1892
15
1893
9
1894
16
1895
16
1896
9
1897
15
1898
14
1899
14
1900
8
1901
17
1902
10
1903
8
1904
16
1905
15
1906
15
1907
13
1908
18
1909
23
1910
28
1911
26
1912
16
1913
31
1914
32
1915
14
1916
24
1917
14
1918
25
1919
24
1920
20
1921
35
1922
14
1923
22
1924
11
1925
17
1926
9
1927
20
1928
8
1929
15
1930
16
1931
14
1932
11
1933
12
1934
24
1935
13
1936
26
1937
12
1938
29
1939
15
1940
13
1941
16
1942
20
1943
21
1944
20
1945
25
1946
25
1947
24
1948
16
1949
24
1950
27
1951
17
1952
10
All-Time Record Progression
5 new records
5 all-time records were set at Fredericton Unb between 4 January 1905 and 17 August 1935. Each dot is a new record.
When Fredericton Unb set new all-time records
Date
Kind
Detail
1905-01-04
Record daily snowfall
Record daily snowfall 52.1 cm (20.5 in)
1912-06-01
Record daily precipitation
Record daily precipitation 119.4 mm (4.7 in)
1912-07-07
Record high minimum temperature
Record high minimum temperature 23.3 C (73.9 F)
1933-12-29
Record low maximum temperature
Record low maximum temperature -24.4 C (-11.9 F)
1935-08-17
Record high maximum temperature
Record high maximum temperature 38.3 C (100.9 F)
Wettest Day of Each Month
Jun: 119.4 mm (4.7 in)
The wettest day on record for each calendar month at Fredericton Unb. The most was 119.4 mm (4.7 in) on 1 June 1912.
Record daily precipitation for each month at Fredericton Unb
Month
Record daily precipitation (mm)
Date
Jan
71.1 mm (2.8 in)
6 January 1909
Feb
76.2 mm (3.0 in)
12 February 1879
Mar
65.3 mm (2.6 in)
2 March 1882
Apr
57.4 mm (2.3 in)
21 April 1950
May
57.9 mm (2.3 in)
4 May 1900
Jun
119.4 mm (4.7 in)
1 June 1912
Jul
73.9 mm (2.9 in)
9 July 1915
Aug
93.5 mm (3.7 in)
25 August 1933
Sep
111.8 mm (4.4 in)
17 September 1933
Oct
90.2 mm (3.6 in)
10 October 1900
Nov
96.8 mm (3.8 in)
7 November 1876
Dec
47.0 mm (1.9 in)
9 December 1950
Period of Record Coverage
1871 to 1952
Complete yearUnder 90 percent of days
81 years of record at Fredericton Unb, 1871 to 1952. 7 years have data for under 90 percent of days and are left out of rankings: 1871, 1874, 1894, 1895, 1903, 1906, 1952.
Cooler than the station meanWarmer than the station mean
One stripe for each of 73 complete years at Fredericton Unb, 1872 to 1951. Blue stripes are years cooler than the station's own mean of 4.8 C (40.7 F); red stripes are warmer. The coolest year was 1875, at 2.9 C (37.2 F), and the warmest was 1949, at 6.3 C (43.3 F). The strongest colour marks a difference of 2.0 C (3.6 F).
Annual mean temperature at Fredericton Unb as warming stripes, 1872 to 1951
Year
Annual mean temperature
Difference from the station mean
1872
4.3 C
-0.50 C
1875
2.9 C
-1.96 C
1876
4.1 C
-0.70 C
1877
5.1 C
+0.29 C
1878
5.7 C
+0.89 C
1879
3.9 C
-0.96 C
1880
4.6 C
-0.19 C
1881
5.1 C
+0.28 C
1882
4.3 C
-0.58 C
1883
3.4 C
-1.42 C
1884
4.2 C
-0.67 C
1885
4.1 C
-0.76 C
1886
4.6 C
-0.20 C
1887
4.1 C
-0.76 C
1888
3.9 C
-0.91 C
1889
6.0 C
+1.14 C
1890
3.9 C
-0.96 C
1891
5.4 C
+0.55 C
1892
5.0 C
+0.15 C
1893
3.9 C
-0.89 C
1896
4.3 C
-0.52 C
1897
4.7 C
-0.13 C
1898
5.5 C
+0.67 C
1899
4.8 C
-0.05 C
1900
4.9 C
+0.09 C
1902
5.4 C
+0.58 C
1904
3.7 C
-1.11 C
1905
4.5 C
-0.35 C
1907
3.9 C
-0.95 C
1908
5.0 C
+0.15 C
1909
5.1 C
+0.23 C
1910
5.4 C
+0.57 C
1911
4.7 C
-0.11 C
1912
4.3 C
-0.52 C
1913
5.7 C
+0.88 C
1914
4.2 C
-0.67 C
1915
6.0 C
+1.16 C
1916
5.1 C
+0.22 C
1917
3.7 C
-1.14 C
1918
4.3 C
-0.57 C
1919
5.1 C
+0.23 C
1920
4.8 C
-0.05 C
1921
5.6 C
+0.78 C
1922
4.8 C
-0.07 C
1923
4.1 C
-0.69 C
1924
4.7 C
-0.09 C
1925
4.7 C
-0.17 C
1926
3.9 C
-0.96 C
1927
5.6 C
+0.80 C
1928
5.0 C
+0.16 C
1929
4.8 C
+0.01 C
1930
5.1 C
+0.25 C
1931
6.0 C
+1.18 C
1932
5.3 C
+0.48 C
1933
4.6 C
-0.24 C
1934
3.8 C
-1.04 C
1935
4.4 C
-0.46 C
1936
4.8 C
-0.03 C
1937
6.2 C
+1.39 C
1938
5.6 C
+0.80 C
1939
4.7 C
-0.16 C
1940
4.6 C
-0.25 C
1941
5.2 C
+0.37 C
1942
5.7 C
+0.82 C
1943
4.6 C
-0.24 C
1944
5.8 C
+1.00 C
1945
5.7 C
+0.90 C
1946
5.7 C
+0.87 C
1947
5.8 C
+1.00 C
1948
5.2 C
+0.38 C
1949
6.3 C
+1.43 C
1950
5.3 C
+0.49 C
1951
6.0 C
+1.19 C
The annual mean temperature here has risen by 0.1 C (0.1 to 0.2) per decade over 1872 to 1951. In Fahrenheit: 0.3 F (0.1 to 0.4) per decade. The slope is a straight line fitted to 73 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Fredericton Unb
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.1 C (0.1 to 0.2) per decade
0.3 F (0.1 to 0.4) per decade
1872 to 1951
73
Rise
Mean daily maximum
0.1 C (0.1 to 0.2) per decade
0.2 F (0.1 to 0.4) per decade
1872 to 1951
73
Rise
Mean daily minimum
0.2 C (0.1 to 0.2) per decade
0.3 F (0.1 to 0.4) per decade
1872 to 1951
73
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
1871 to 1952
Yearly extremes at Fredericton Unb: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
38.3 C (100.9 F)
1935
33.3 C (91.9 F)
81
Coldest night (TNn)
-37.2 C (-35.0 F)
1884
-31.1 C (-24.0 F)
81
Wettest day (Rx1day)
119.4 mm (4.7 in)
1912
54.1 mm (2.1 in)
81
Wettest five days (Rx5day)
220.7 mm (8.7 in)
1909
82.1 mm (3.2 in)
81
Longest dry spell (CDD)
36 days
1918
14 days
81
Hottest day (TXx)
The hottest day of the year at Fredericton Unb, 1871 to 1952. The record is 38.3 C (100.9 F) in 1935, marked on the chart; the median year is 33.3 C (91.9 F).
Hottest day (TXx) at Fredericton Unb by year
Year
Hottest day (TXx)
1871
8.3 C (46.9 F)
1872
31.7 C (89.1 F)
1874
30.0 C (86.0 F)
1875
30.6 C (87.1 F)
1876
33.9 C (93.0 F)
1877
31.7 C (89.1 F)
1878
36.1 C (97.0 F)
1879
32.8 C (91.0 F)
1880
33.9 C (93.0 F)
1881
34.4 C (93.9 F)
1882
33.9 C (93.0 F)
1883
32.2 C (90.0 F)
1884
33.3 C (91.9 F)
1885
31.7 C (89.1 F)
1886
31.7 C (89.1 F)
1887
33.3 C (91.9 F)
1888
31.1 C (88.0 F)
1889
33.3 C (91.9 F)
1890
31.1 C (88.0 F)
1891
30.0 C (86.0 F)
1892
31.1 C (88.0 F)
1893
35.0 C (95.0 F)
1894
27.2 C (81.0 F)
1895
33.3 C (91.9 F)
1896
33.9 C (93.0 F)
1897
33.9 C (93.0 F)
1898
34.4 C (93.9 F)
1899
31.1 C (88.0 F)
1900
33.9 C (93.0 F)
1901
33.9 C (93.0 F)
1902
29.4 C (84.9 F)
1903
27.2 C (81.0 F)
1904
30.0 C (86.0 F)
1905
31.7 C (89.1 F)
1906
31.7 C (89.1 F)
1907
32.8 C (91.0 F)
1908
33.3 C (91.9 F)
1909
33.3 C (91.9 F)
1910
31.7 C (89.1 F)
1911
35.0 C (95.0 F)
1912
35.6 C (96.1 F)
1913
32.8 C (91.0 F)
1914
32.2 C (90.0 F)
1915
30.0 C (86.0 F)
1916
34.4 C (93.9 F)
1917
33.3 C (91.9 F)
1918
33.3 C (91.9 F)
1919
33.9 C (93.0 F)
1920
34.4 C (93.9 F)
1921
35.6 C (96.1 F)
1922
32.2 C (90.0 F)
1923
34.4 C (93.9 F)
1924
32.8 C (91.0 F)
1925
32.8 C (91.0 F)
1926
32.2 C (90.0 F)
1927
30.6 C (87.1 F)
1928
33.9 C (93.0 F)
1929
33.9 C (93.0 F)
1930
33.9 C (93.0 F)
1931
33.9 C (93.0 F)
1932
33.3 C (91.9 F)
1933
31.1 C (88.0 F)
1934
31.1 C (88.0 F)
1935
38.3 C (100.9 F)
1936
28.9 C (84.0 F)
1937
33.3 C (91.9 F)
1938
33.3 C (91.9 F)
1939
33.9 C (93.0 F)
1940
32.8 C (91.0 F)
1941
33.3 C (91.9 F)
1942
32.8 C (91.0 F)
1943
33.9 C (93.0 F)
1944
36.1 C (97.0 F)
1945
33.3 C (91.9 F)
1946
32.8 C (91.0 F)
1947
35.0 C (95.0 F)
1948
32.8 C (91.0 F)
1949
35.6 C (96.1 F)
1950
31.1 C (88.0 F)
1951
31.7 C (89.1 F)
1952
35.6 C (96.1 F)
Coldest night (TNn)
The coldest night of the year at Fredericton Unb, 1871 to 1952. The record is -37.2 C (-35.0 F) in 1884, marked on the chart; the median year is -31.1 C (-24.0 F).
Coldest night (TNn) at Fredericton Unb by year
Year
Coldest night (TNn)
1871
-28.9 C (-20.0 F)
1872
-29.4 C (-20.9 F)
1874
-34.4 C (-29.9 F)
1875
-35.0 C (-31.0 F)
1876
-31.1 C (-24.0 F)
1877
-34.4 C (-29.9 F)
1878
-34.4 C (-29.9 F)
1879
-35.6 C (-32.1 F)
1880
-30.0 C (-22.0 F)
1881
-30.6 C (-23.1 F)
1882
-33.9 C (-29.0 F)
1883
-32.8 C (-27.0 F)
1884
-37.2 C (-35.0 F)
1885
-30.6 C (-23.1 F)
1886
-31.1 C (-24.0 F)
1887
-36.7 C (-34.1 F)
1888
-30.0 C (-22.0 F)
1889
-36.1 C (-33.0 F)
1890
-31.1 C (-24.0 F)
1891
-28.3 C (-18.9 F)
1892
-25.0 C (-13.0 F)
1893
-32.2 C (-26.0 F)
1894
-35.0 C (-31.0 F)
1895
-26.1 C (-15.0 F)
1896
-28.9 C (-20.0 F)
1897
-27.8 C (-18.0 F)
1898
-35.6 C (-32.1 F)
1899
-27.2 C (-17.0 F)
1900
-33.9 C (-29.0 F)
1901
-28.9 C (-20.0 F)
1902
-30.0 C (-22.0 F)
1903
-29.4 C (-20.9 F)
1904
-37.2 C (-35.0 F)
1905
-36.7 C (-34.1 F)
1906
-31.1 C (-24.0 F)
1907
-32.2 C (-26.0 F)
1908
-33.9 C (-29.0 F)
1909
-32.8 C (-27.0 F)
1910
-31.7 C (-25.1 F)
1911
-35.0 C (-31.0 F)
1912
-35.6 C (-32.1 F)
1913
-28.9 C (-20.0 F)
1914
-31.1 C (-24.0 F)
1915
-33.9 C (-29.0 F)
1916
-28.9 C (-20.0 F)
1917
-31.7 C (-25.1 F)
1918
-33.3 C (-27.9 F)
1919
-32.2 C (-26.0 F)
1920
-31.1 C (-24.0 F)
1921
-28.3 C (-18.9 F)
1922
-37.2 C (-35.0 F)
1923
-35.6 C (-32.1 F)
1924
-30.0 C (-22.0 F)
1925
-37.2 C (-35.0 F)
1926
-30.0 C (-22.0 F)
1927
-28.9 C (-20.0 F)
1928
-27.2 C (-17.0 F)
1929
-31.1 C (-24.0 F)
1930
-31.1 C (-24.0 F)
1931
-33.3 C (-27.9 F)
1932
-28.3 C (-18.9 F)
1933
-31.7 C (-25.1 F)
1934
-35.6 C (-32.1 F)
1935
-32.2 C (-26.0 F)
1936
-27.2 C (-17.0 F)
1937
-29.4 C (-20.9 F)
1938
-31.1 C (-24.0 F)
1939
-28.3 C (-18.9 F)
1940
-28.3 C (-18.9 F)
1941
-29.4 C (-20.9 F)
1942
-33.9 C (-29.0 F)
1943
-32.8 C (-27.0 F)
1944
-28.3 C (-18.9 F)
1945
-30.0 C (-22.0 F)
1946
-28.3 C (-18.9 F)
1947
-31.7 C (-25.1 F)
1948
-35.0 C (-31.0 F)
1949
-29.4 C (-20.9 F)
1950
-29.4 C (-20.9 F)
1951
-31.7 C (-25.1 F)
1952
-28.9 C (-20.0 F)
Wettest day (Rx1day)
The wettest day of the year at Fredericton Unb, 1871 to 1952. The record is 119.4 mm (4.7 in) in 1912, marked on the chart; the median year is 54.1 mm (2.1 in).
Wettest day (Rx1day) at Fredericton Unb by year
Year
Wettest day (Rx1day)
1871
29.0 mm (1.1 in)
1872
55.6 mm (2.2 in)
1874
61.5 mm (2.4 in)
1875
47.0 mm (1.9 in)
1876
96.8 mm (3.8 in)
1877
48.8 mm (1.9 in)
1878
35.3 mm (1.4 in)
1879
89.7 mm (3.5 in)
1880
56.4 mm (2.2 in)
1881
58.9 mm (2.3 in)
1882
65.3 mm (2.6 in)
1883
38.9 mm (1.5 in)
1884
62.0 mm (2.4 in)
1885
62.2 mm (2.4 in)
1886
45.5 mm (1.8 in)
1887
36.8 mm (1.4 in)
1888
81.0 mm (3.2 in)
1889
39.6 mm (1.6 in)
1890
56.9 mm (2.2 in)
1891
40.1 mm (1.6 in)
1892
57.2 mm (2.3 in)
1893
53.3 mm (2.1 in)
1894
30.5 mm (1.2 in)
1895
65.8 mm (2.6 in)
1896
51.8 mm (2.0 in)
1897
34.3 mm (1.4 in)
1898
52.6 mm (2.1 in)
1899
34.5 mm (1.4 in)
1900
90.2 mm (3.6 in)
1901
61.5 mm (2.4 in)
1902
59.2 mm (2.3 in)
1903
41.7 mm (1.6 in)
1904
52.8 mm (2.1 in)
1905
57.2 mm (2.3 in)
1906
57.9 mm (2.3 in)
1907
74.4 mm (2.9 in)
1908
61.0 mm (2.4 in)
1909
91.9 mm (3.6 in)
1910
68.6 mm (2.7 in)
1911
71.9 mm (2.8 in)
1912
119.4 mm (4.7 in)
1913
45.5 mm (1.8 in)
1914
42.4 mm (1.7 in)
1915
73.9 mm (2.9 in)
1916
52.3 mm (2.1 in)
1917
79.0 mm (3.1 in)
1918
42.7 mm (1.7 in)
1919
41.4 mm (1.6 in)
1920
53.8 mm (2.1 in)
1921
34.0 mm (1.3 in)
1922
41.1 mm (1.6 in)
1923
41.7 mm (1.6 in)
1924
53.1 mm (2.1 in)
1925
55.4 mm (2.2 in)
1926
62.0 mm (2.4 in)
1927
46.5 mm (1.8 in)
1928
50.3 mm (2.0 in)
1929
52.1 mm (2.1 in)
1930
48.3 mm (1.9 in)
1931
67.3 mm (2.6 in)
1932
67.1 mm (2.6 in)
1933
111.8 mm (4.4 in)
1934
56.6 mm (2.2 in)
1935
47.2 mm (1.9 in)
1936
49.8 mm (2.0 in)
1937
67.3 mm (2.6 in)
1938
51.1 mm (2.0 in)
1939
74.7 mm (2.9 in)
1940
62.2 mm (2.4 in)
1941
41.7 mm (1.6 in)
1942
50.8 mm (2.0 in)
1943
55.4 mm (2.2 in)
1944
54.6 mm (2.1 in)
1945
45.2 mm (1.8 in)
1946
39.9 mm (1.6 in)
1947
41.9 mm (1.6 in)
1948
39.6 mm (1.6 in)
1949
88.9 mm (3.5 in)
1950
57.4 mm (2.3 in)
1951
54.1 mm (2.1 in)
1952
64.3 mm (2.5 in)
Wettest five days (Rx5day)
The wettest five days of the year at Fredericton Unb, 1871 to 1952. The record is 220.7 mm (8.7 in) in 1909, marked on the chart; the median year is 82.1 mm (3.2 in).
Wettest five days (Rx5day) at Fredericton Unb by year
Year
Wettest five days (Rx5day)
1871
38.7 mm (1.5 in)
1872
85.3 mm (3.4 in)
1874
104.1 mm (4.1 in)
1875
63.0 mm (2.5 in)
1876
151.0 mm (5.9 in)
1877
71.2 mm (2.8 in)
1878
57.0 mm (2.2 in)
1879
111.3 mm (4.4 in)
1880
74.7 mm (2.9 in)
1881
134.9 mm (5.3 in)
1882
92.7 mm (3.6 in)
1883
50.1 mm (2.0 in)
1884
93.6 mm (3.7 in)
1885
70.9 mm (2.8 in)
1886
76.0 mm (3.0 in)
1887
65.0 mm (2.6 in)
1888
146.4 mm (5.8 in)
1889
75.2 mm (3.0 in)
1890
96.8 mm (3.8 in)
1891
58.1 mm (2.3 in)
1892
111.3 mm (4.4 in)
1893
72.1 mm (2.8 in)
1894
44.2 mm (1.7 in)
1895
88.7 mm (3.5 in)
1896
89.9 mm (3.5 in)
1897
67.1 mm (2.6 in)
1898
104.9 mm (4.1 in)
1899
73.5 mm (2.9 in)
1900
211.8 mm (8.3 in)
1901
68.1 mm (2.7 in)
1902
99.4 mm (3.9 in)
1903
68.5 mm (2.7 in)
1904
67.3 mm (2.6 in)
1905
82.1 mm (3.2 in)
1906
71.3 mm (2.8 in)
1907
107.4 mm (4.2 in)
1908
78.5 mm (3.1 in)
1909
220.7 mm (8.7 in)
1910
81.6 mm (3.2 in)
1911
82.1 mm (3.2 in)
1912
123.0 mm (4.8 in)
1913
78.7 mm (3.1 in)
1914
66.6 mm (2.6 in)
1915
84.8 mm (3.3 in)
1916
60.2 mm (2.4 in)
1917
84.3 mm (3.3 in)
1918
75.6 mm (3.0 in)
1919
87.8 mm (3.5 in)
1920
70.1 mm (2.8 in)
1921
52.8 mm (2.1 in)
1922
103.0 mm (4.1 in)
1923
78.6 mm (3.1 in)
1924
60.2 mm (2.4 in)
1925
93.5 mm (3.7 in)
1926
83.8 mm (3.3 in)
1927
98.0 mm (3.9 in)
1928
53.8 mm (2.1 in)
1929
55.9 mm (2.2 in)
1930
94.0 mm (3.7 in)
1931
99.6 mm (3.9 in)
1932
86.6 mm (3.4 in)
1933
143.2 mm (5.6 in)
1934
67.6 mm (2.7 in)
1935
76.5 mm (3.0 in)
1936
67.6 mm (2.7 in)
1937
97.5 mm (3.8 in)
1938
73.4 mm (2.9 in)
1939
93.5 mm (3.7 in)
1940
90.7 mm (3.6 in)
1941
96.5 mm (3.8 in)
1942
71.6 mm (2.8 in)
1943
92.0 mm (3.6 in)
1944
98.8 mm (3.9 in)
1945
94.2 mm (3.7 in)
1946
59.7 mm (2.4 in)
1947
72.6 mm (2.9 in)
1948
67.8 mm (2.7 in)
1949
101.6 mm (4.0 in)
1950
101.4 mm (4.0 in)
1951
88.4 mm (3.5 in)
1952
79.8 mm (3.1 in)
Longest dry spell (CDD)
The longest dry spell of the year at Fredericton Unb, 1871 to 1952. The record is 36 days in 1918, marked on the chart; the median year is 14 days.
Longest dry spell (CDD) at Fredericton Unb by year
Year
Longest dry spell (CDD)
1871
6 days
1872
14 days
1874
15 days
1875
13 days
1876
12 days
1877
12 days
1878
12 days
1879
11 days
1880
11 days
1881
20 days
1882
19 days
1883
10 days
1884
11 days
1885
18 days
1886
25 days
1887
17 days
1888
8 days
1889
29 days
1890
15 days
1891
14 days
1892
13 days
1893
18 days
1894
18 days
1895
15 days
1896
19 days
1897
15 days
1898
11 days
1899
22 days
1900
15 days
1901
12 days
1902
13 days
1903
10 days
1904
13 days
1905
16 days
1906
13 days
1907
14 days
1908
15 days
1909
12 days
1910
11 days
1911
23 days
1912
14 days
1913
9 days
1914
13 days
1915
14 days
1916
15 days
1917
10 days
1918
36 days
1919
11 days
1920
18 days
1921
15 days
1922
14 days
1923
13 days
1924
18 days
1925
11 days
1926
11 days
1927
14 days
1928
12 days
1929
13 days
1930
18 days
1931
14 days
1932
14 days
1933
11 days
1934
16 days
1935
12 days
1936
8 days
1937
17 days
1938
17 days
1939
15 days
1940
13 days
1941
14 days
1942
13 days
1943
11 days
1944
17 days
1945
14 days
1946
16 days
1947
15 days
1948
16 days
1949
13 days
1950
18 days
1951
16 days
1952
22 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
73 years with a frost
Across 73 years with a frost, the median last spring frost at Fredericton Unb falls on 19 May and the median first autumn frost on 24 September, which leaves a median of 127 days between them.
In 1922 to 1951 the median growing season was 125 days. That is 4 days fewer than in 1872 to 1908.
Fitted over all years, the growing season changes by -1.1 days per decade at this station.
Frost dates and growing season at Fredericton Unb
Measure
Median, all years
Earliest period (1872 to 1908)
Recent period (1922 to 1951)
Recent against earliest
Fitted trend
Last spring frost
19 May
17 May
20 May
3 days later
+0.5 days per decade
First autumn frost
24 September
24 September
24 September
no change
-0.5 days per decade
Growing days
127 days
129 days
125 days
4 days fewer
-1.1 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
74 years, 1872 to 1951
A day with at least 53.5 mm (2.1 in) of rain is expected about once in 2 years. A day with at least 120.7 mm (4.8 in) of rain is expected about once in 100 years.
Rainfall return levels at Fredericton Unb: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
53.5 mm (2.1 in)
5 years
68.6 mm (2.7 in)
10 years
79.7 mm (3.1 in)
25 years
95.0 mm (3.7 in)
50 years
107.4 mm (4.2 in)
100 years
120.7 mm (4.8 in)
Longer than the 74 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, 74 years of values from 1872 to 1951.
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: 119.4 mm (4.7 in) in 1912; 111.8 mm (4.4 in) in 1933; 96.8 mm (3.8 in) in 1876.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Fredericton Unb standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Fredericton Unb 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.