Record envelope, standing records and threshold days for Westernport (USC00189405), Maryland, United States, with 75 years of record.
Key Facts for Westernport
Westernport (USC00189405) is a weather station in Maryland, United States at 39.48 latitude and -79.05 longitude, 305 m (1,001 ft) above sea level.
The station reports from 1894 to 1968, 75 years of record.
1,464 records set at Westernport still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
Westernport set a daily record snowfall of 15.2 cm (6.0 in) on 13 November 1968.
About the Station
Location: Maryland, United States, 39.48 latitude, -79.05 longitude.
Elevation: 305 m (1,001 ft).
Period of record: 1894 to 1968, 75 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 Westernport. 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 Westernport, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
28.3 C (82.9 F)
-27.2 C (-17.0 F)
n/a
n/a
Feb
30.6 C (87.1 F)
-25.0 C (-13.0 F)
n/a
n/a
Mar
32.2 C (90.0 F)
-19.4 C (-2.9 F)
n/a
n/a
Apr
35.6 C (96.1 F)
-13.9 C (7.0 F)
n/a
n/a
May
35.6 C (96.1 F)
-3.3 C (26.1 F)
n/a
n/a
Jun
38.9 C (102.0 F)
0.0 C (32.0 F)
n/a
n/a
Jul
41.7 C (107.1 F)
5.0 C (41.0 F)
n/a
n/a
Aug
41.7 C (107.1 F)
3.3 C (37.9 F)
n/a
n/a
Sep
40.0 C (104.0 F)
-2.2 C (28.0 F)
n/a
n/a
Oct
36.7 C (98.1 F)
-8.9 C (16.0 F)
n/a
n/a
Nov
30.6 C (87.1 F)
-18.9 C (-2.0 F)
n/a
n/a
Dec
25.6 C (78.1 F)
-22.2 C (-8.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Westernport still stand. 1895 holds the most, with 51.
Standing records at Westernport by the year they were set
Year set
Standing records
1894
5
1895
51
1896
36
1897
14
1898
22
1899
31
1900
30
1901
24
1902
24
1903
19
1904
18
1905
16
1906
17
1907
21
1908
20
1909
21
1910
15
1911
16
1912
21
1913
21
1914
27
1915
10
1916
20
1917
20
1918
19
1919
13
1920
11
1921
17
1922
15
1923
20
1924
12
1925
31
1926
21
1927
41
1928
18
1929
31
1930
46
1931
26
1932
26
1933
27
1934
23
1935
21
1936
30
1937
14
1938
17
1939
19
1940
28
1941
15
1942
21
1943
24
1944
11
1945
18
1946
9
1947
25
1948
16
1949
12
1950
19
1951
16
1952
14
1953
8
1954
14
1955
17
1956
18
1957
11
1958
10
1959
14
1960
17
1961
14
1962
15
1963
13
1964
14
1965
13
1966
13
1967
10
1968
18
All-Time Record Progression
4 new records
4 all-time records were set at Westernport between 15 October 1942 and 28 December 1967. Each dot is a new record.
When Westernport set new all-time records
Date
Kind
Detail
1942-10-15
Record daily precipitation
Record daily precipitation 129.5 mm (5.1 in)
1954-10-15
Record daily precipitation
Record daily precipitation 132.1 mm (5.2 in)
1964-08-31
Record daily precipitation
Record daily precipitation 147.3 mm (5.8 in)
1967-12-28
Record daily snowfall
Record daily snowfall 58.4 cm (23.0 in)
Wettest Day of Each Month
Aug: 147.3 mm (5.8 in)
The wettest day on record for each calendar month at Westernport. The most was 147.3 mm (5.8 in) on 31 August 1964.
Record daily precipitation for each month at Westernport
Month
Record daily precipitation (mm)
Date
Jan
46.2 mm (1.8 in)
1 January 1948
Feb
45.7 mm (1.8 in)
13 February 1923
Mar
96.5 mm (3.8 in)
17 March 1936
Apr
78.7 mm (3.1 in)
29 April 1964
May
94.7 mm (3.7 in)
8 May 1960
Jun
68.6 mm (2.7 in)
8 June 1955
Jul
102.9 mm (4.1 in)
12 July 1949
Aug
147.3 mm (5.8 in)
31 August 1964
Sep
109.2 mm (4.3 in)
29 September 1896
Oct
132.1 mm (5.2 in)
15 October 1954
Nov
55.9 mm (2.2 in)
4 November 1896
Dec
58.4 mm (2.3 in)
28 December 1967
Period of Record Coverage
1894 to 1968
Complete yearUnder 90 percent of days
75 years of record at Westernport, 1894 to 1968. 1 years have data for under 90 percent of days and are left out of rankings: 1894.
Cooler than the station meanWarmer than the station mean
One stripe for each of 67 complete years at Westernport, 1895 to 1967. Blue stripes are years cooler than the station's own mean of 11.7 C (53.1 F); red stripes are warmer. The coolest year was 1904, at 9.7 C (49.5 F), and the warmest was 1931, at 13.2 C (55.8 F). The strongest colour marks a difference of 2.1 C (3.8 F).
Annual mean temperature at Westernport as warming stripes, 1895 to 1967
Year
Annual mean temperature
Difference from the station mean
1895
9.8 C
-1.99 C
1897
11.0 C
-0.76 C
1898
11.7 C
-0.09 C
1899
10.6 C
-1.16 C
1900
10.6 C
-1.12 C
1902
10.8 C
-0.97 C
1903
10.6 C
-1.19 C
1904
9.7 C
-2.02 C
1905
10.8 C
-0.94 C
1906
11.7 C
-0.04 C
1907
10.5 C
-1.22 C
1908
11.6 C
-0.20 C
1909
11.4 C
-0.31 C
1910
11.3 C
-0.50 C
1911
12.2 C
+0.48 C
1912
11.9 C
+0.15 C
1913
12.9 C
+1.19 C
1914
11.8 C
+0.02 C
1915
11.8 C
+0.08 C
1916
11.9 C
+0.14 C
1917
10.7 C
-1.05 C
1918
12.0 C
+0.27 C
1919
12.4 C
+0.60 C
1920
11.0 C
-0.71 C
1921
13.2 C
+1.46 C
1922
12.7 C
+0.99 C
1923
12.2 C
+0.41 C
1924
11.0 C
-0.79 C
1925
12.1 C
+0.30 C
1926
11.3 C
-0.44 C
1927
12.2 C
+0.49 C
1928
11.6 C
-0.17 C
1929
11.8 C
+0.08 C
1930
12.1 C
+0.32 C
1931
13.2 C
+1.49 C
1932
12.6 C
+0.87 C
1933
12.6 C
+0.84 C
1934
12.2 C
+0.41 C
1935
11.8 C
+0.08 C
1937
11.7 C
-0.08 C
1938
12.6 C
+0.86 C
1939
12.5 C
+0.79 C
1940
10.9 C
-0.85 C
1941
12.1 C
+0.34 C
1942
11.9 C
+0.19 C
1943
11.8 C
+0.09 C
1944
11.8 C
+0.07 C
1945
11.7 C
-0.07 C
1946
11.9 C
+0.18 C
1947
11.9 C
+0.13 C
1948
12.0 C
+0.27 C
1949
13.0 C
+1.25 C
1950
11.6 C
-0.14 C
1951
12.1 C
+0.34 C
1952
12.5 C
+0.76 C
1953
13.1 C
+1.35 C
1954
12.3 C
+0.57 C
1955
12.2 C
+0.46 C
1958
10.9 C
-0.85 C
1959
12.7 C
+0.93 C
1960
11.2 C
-0.58 C
1961
11.4 C
-0.38 C
1963
11.1 C
-0.61 C
1964
11.9 C
+0.16 C
1965
12.1 C
+0.39 C
1966
11.2 C
-0.52 C
1967
11.4 C
-0.32 C
The annual mean temperature here has risen by 0.1 C (0.1 to 0.2) per decade over 1895 to 1967. In Fahrenheit: 0.2 F (0.1 to 0.4) per decade. The slope is a straight line fitted to 67 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Westernport
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.1 C (0.1 to 0.2) per decade
0.2 F (0.1 to 0.4) per decade
1895 to 1967
67
Rise
Mean daily maximum
0.15 C (0.04 to 0.26) per decade
0.3 F (0.1 to 0.5) per decade
1895 to 1967
67
Rise
Mean daily minimum
0.13 C (0.05 to 0.21) per decade
0.2 F (0.1 to 0.4) per decade
1895 to 1967
67
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
1894 to 1968
Yearly extremes at Westernport: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
41.7 C (107.1 F)
1898
36.7 C (98.1 F)
75
Coldest night (TNn)
-27.2 C (-17.0 F)
1912
-18.3 C (-0.9 F)
75
Wettest day (Rx1day)
147.3 mm (5.8 in)
1964
50.3 mm (2.0 in)
75
Wettest five days (Rx5day)
184.6 mm (7.3 in)
1942
81.0 mm (3.2 in)
75
Longest dry spell (CDD)
38 days
1915
19 days
75
Hottest day (TXx)
The hottest day of the year at Westernport, 1894 to 1968. The record is 41.7 C (107.1 F) in 1898, marked on the chart; the median year is 36.7 C (98.1 F).
Hottest day (TXx) at Westernport by year
Year
Hottest day (TXx)
1894
19.4 C (66.9 F)
1895
38.9 C (102.0 F)
1896
37.8 C (100.0 F)
1897
38.9 C (102.0 F)
1898
41.7 C (107.1 F)
1899
33.9 C (93.0 F)
1900
36.1 C (97.0 F)
1901
36.7 C (98.1 F)
1902
36.1 C (97.0 F)
1903
35.6 C (96.1 F)
1904
33.9 C (93.0 F)
1905
35.0 C (95.0 F)
1906
35.0 C (95.0 F)
1907
32.8 C (91.0 F)
1908
37.2 C (99.0 F)
1909
35.0 C (95.0 F)
1910
36.1 C (97.0 F)
1911
38.3 C (100.9 F)
1912
38.9 C (102.0 F)
1913
38.9 C (102.0 F)
1914
36.7 C (98.1 F)
1915
36.1 C (97.0 F)
1916
36.7 C (98.1 F)
1917
37.2 C (99.0 F)
1918
41.7 C (107.1 F)
1919
38.3 C (100.9 F)
1920
34.4 C (93.9 F)
1921
35.6 C (96.1 F)
1922
37.2 C (99.0 F)
1923
36.7 C (98.1 F)
1924
37.2 C (99.0 F)
1925
37.8 C (100.0 F)
1926
40.0 C (104.0 F)
1927
36.7 C (98.1 F)
1928
33.9 C (93.0 F)
1929
37.2 C (99.0 F)
1930
41.1 C (106.0 F)
1931
37.8 C (100.0 F)
1932
38.3 C (100.9 F)
1933
38.3 C (100.9 F)
1934
40.0 C (104.0 F)
1935
35.6 C (96.1 F)
1936
40.6 C (105.1 F)
1937
36.7 C (98.1 F)
1938
36.1 C (97.0 F)
1939
36.1 C (97.0 F)
1940
37.2 C (99.0 F)
1941
36.7 C (98.1 F)
1942
36.1 C (97.0 F)
1943
37.8 C (100.0 F)
1944
37.8 C (100.0 F)
1945
36.7 C (98.1 F)
1946
36.7 C (98.1 F)
1947
36.1 C (97.0 F)
1948
38.3 C (100.9 F)
1949
36.1 C (97.0 F)
1950
35.0 C (95.0 F)
1951
37.8 C (100.0 F)
1952
38.3 C (100.9 F)
1953
40.0 C (104.0 F)
1954
40.6 C (105.1 F)
1955
38.9 C (102.0 F)
1956
36.1 C (97.0 F)
1957
38.3 C (100.9 F)
1958
35.0 C (95.0 F)
1959
37.8 C (100.0 F)
1960
34.4 C (93.9 F)
1961
36.1 C (97.0 F)
1962
37.2 C (99.0 F)
1963
35.0 C (95.0 F)
1964
36.7 C (98.1 F)
1965
36.7 C (98.1 F)
1966
38.9 C (102.0 F)
1967
36.1 C (97.0 F)
1968
36.7 C (98.1 F)
Coldest night (TNn)
The coldest night of the year at Westernport, 1894 to 1968. The record is -27.2 C (-17.0 F) in 1912, marked on the chart; the median year is -18.3 C (-0.9 F).
Coldest night (TNn) at Westernport by year
Year
Coldest night (TNn)
1894
-21.1 C (-6.0 F)
1895
-22.2 C (-8.0 F)
1896
-19.4 C (-2.9 F)
1897
-18.3 C (-0.9 F)
1898
-18.3 C (-0.9 F)
1899
-25.0 C (-13.0 F)
1900
-17.8 C (0.0 F)
1901
-17.2 C (1.0 F)
1902
-17.8 C (0.0 F)
1903
-20.6 C (-5.1 F)
1904
-22.2 C (-8.0 F)
1905
-19.4 C (-2.9 F)
1906
-16.1 C (3.0 F)
1907
-23.9 C (-11.0 F)
1908
-21.1 C (-6.0 F)
1909
-16.1 C (3.0 F)
1910
-17.8 C (0.0 F)
1911
-14.4 C (6.1 F)
1912
-27.2 C (-17.0 F)
1913
-12.2 C (10.0 F)
1914
-20.6 C (-5.1 F)
1915
-12.2 C (10.0 F)
1916
-16.1 C (3.0 F)
1917
-22.2 C (-8.0 F)
1918
-23.9 C (-11.0 F)
1919
-20.0 C (-4.0 F)
1920
-18.9 C (-2.0 F)
1921
-17.2 C (1.0 F)
1922
-18.3 C (-0.9 F)
1923
-15.0 C (5.0 F)
1924
-18.9 C (-2.0 F)
1925
-27.2 C (-17.0 F)
1926
-18.9 C (-2.0 F)
1927
-15.6 C (3.9 F)
1928
-16.7 C (1.9 F)
1929
-17.8 C (0.0 F)
1930
-18.9 C (-2.0 F)
1931
-12.2 C (10.0 F)
1932
-14.4 C (6.1 F)
1933
-17.8 C (0.0 F)
1934
-25.0 C (-13.0 F)
1935
-21.7 C (-7.1 F)
1936
-23.9 C (-11.0 F)
1937
-16.1 C (3.0 F)
1938
-15.6 C (3.9 F)
1939
-15.6 C (3.9 F)
1940
-18.9 C (-2.0 F)
1941
-13.3 C (8.1 F)
1942
-21.1 C (-6.0 F)
1943
-17.8 C (0.0 F)
1944
-18.3 C (-0.9 F)
1945
-15.0 C (5.0 F)
1946
-20.6 C (-5.1 F)
1947
-16.7 C (1.9 F)
1948
-24.4 C (-11.9 F)
1949
-15.0 C (5.0 F)
1950
-18.3 C (-0.9 F)
1951
-21.7 C (-7.1 F)
1952
-13.9 C (7.0 F)
1953
-10.0 C (14.0 F)
1954
-17.2 C (1.0 F)
1955
-18.3 C (-0.9 F)
1956
-11.7 C (10.9 F)
1957
-17.8 C (0.0 F)
1958
-20.0 C (-4.0 F)
1959
-15.6 C (3.9 F)
1960
-21.1 C (-6.0 F)
1961
-20.6 C (-5.1 F)
1962
-17.8 C (0.0 F)
1963
-23.3 C (-9.9 F)
1964
-15.0 C (5.0 F)
1965
-16.7 C (1.9 F)
1966
-20.6 C (-5.1 F)
1967
-18.3 C (-0.9 F)
1968
-22.8 C (-9.0 F)
Wettest day (Rx1day)
The wettest day of the year at Westernport, 1894 to 1968. The record is 147.3 mm (5.8 in) in 1964, marked on the chart; the median year is 50.3 mm (2.0 in).
Wettest day (Rx1day) at Westernport by year
Year
Wettest day (Rx1day)
1894
50.8 mm (2.0 in)
1895
29.2 mm (1.1 in)
1896
109.2 mm (4.3 in)
1897
41.4 mm (1.6 in)
1898
73.2 mm (2.9 in)
1899
49.0 mm (1.9 in)
1900
52.3 mm (2.1 in)
1901
82.3 mm (3.2 in)
1902
40.6 mm (1.6 in)
1903
72.9 mm (2.9 in)
1904
41.9 mm (1.6 in)
1905
52.8 mm (2.1 in)
1906
47.8 mm (1.9 in)
1907
42.7 mm (1.7 in)
1908
57.9 mm (2.3 in)
1909
48.8 mm (1.9 in)
1910
37.8 mm (1.5 in)
1911
44.2 mm (1.7 in)
1912
44.7 mm (1.8 in)
1913
46.7 mm (1.8 in)
1914
36.1 mm (1.4 in)
1915
66.0 mm (2.6 in)
1916
40.6 mm (1.6 in)
1917
50.3 mm (2.0 in)
1918
43.2 mm (1.7 in)
1919
36.8 mm (1.4 in)
1920
53.3 mm (2.1 in)
1921
45.7 mm (1.8 in)
1922
45.7 mm (1.8 in)
1923
46.2 mm (1.8 in)
1924
60.2 mm (2.4 in)
1925
36.8 mm (1.4 in)
1926
68.6 mm (2.7 in)
1927
46.5 mm (1.8 in)
1928
44.7 mm (1.8 in)
1929
63.5 mm (2.5 in)
1930
58.4 mm (2.3 in)
1931
48.3 mm (1.9 in)
1932
56.4 mm (2.2 in)
1933
41.1 mm (1.6 in)
1934
55.9 mm (2.2 in)
1935
41.9 mm (1.6 in)
1936
96.5 mm (3.8 in)
1937
67.8 mm (2.7 in)
1938
36.8 mm (1.4 in)
1939
43.2 mm (1.7 in)
1940
47.0 mm (1.9 in)
1941
77.5 mm (3.1 in)
1942
129.5 mm (5.1 in)
1943
34.3 mm (1.4 in)
1944
61.7 mm (2.4 in)
1945
69.9 mm (2.8 in)
1946
63.8 mm (2.5 in)
1947
83.8 mm (3.3 in)
1948
55.6 mm (2.2 in)
1949
102.9 mm (4.1 in)
1950
43.2 mm (1.7 in)
1951
52.1 mm (2.1 in)
1952
52.1 mm (2.1 in)
1953
36.8 mm (1.4 in)
1954
132.1 mm (5.2 in)
1955
73.7 mm (2.9 in)
1956
37.3 mm (1.5 in)
1957
50.8 mm (2.0 in)
1958
47.0 mm (1.9 in)
1959
85.9 mm (3.4 in)
1960
94.7 mm (3.7 in)
1961
41.1 mm (1.6 in)
1962
39.6 mm (1.6 in)
1963
37.6 mm (1.5 in)
1964
147.3 mm (5.8 in)
1965
40.9 mm (1.6 in)
1966
58.4 mm (2.3 in)
1967
58.4 mm (2.3 in)
1968
53.3 mm (2.1 in)
Wettest five days (Rx5day)
The wettest five days of the year at Westernport, 1894 to 1968. The record is 184.6 mm (7.3 in) in 1942, marked on the chart; the median year is 81.0 mm (3.2 in).
Wettest five days (Rx5day) at Westernport by year
Year
Wettest five days (Rx5day)
1894
50.8 mm (2.0 in)
1895
43.2 mm (1.7 in)
1896
114.1 mm (4.5 in)
1897
69.1 mm (2.7 in)
1898
127.4 mm (5.0 in)
1899
79.2 mm (3.1 in)
1900
80.8 mm (3.2 in)
1901
96.5 mm (3.8 in)
1902
69.4 mm (2.7 in)
1903
72.9 mm (2.9 in)
1904
53.3 mm (2.1 in)
1905
115.5 mm (4.5 in)
1906
78.0 mm (3.1 in)
1907
87.1 mm (3.4 in)
1908
107.4 mm (4.2 in)
1909
68.1 mm (2.7 in)
1910
63.9 mm (2.5 in)
1911
109.9 mm (4.3 in)
1912
81.0 mm (3.2 in)
1913
90.4 mm (3.6 in)
1914
77.5 mm (3.1 in)
1915
86.7 mm (3.4 in)
1916
47.7 mm (1.9 in)
1917
60.7 mm (2.4 in)
1918
64.3 mm (2.5 in)
1919
63.7 mm (2.5 in)
1920
79.7 mm (3.1 in)
1921
97.0 mm (3.8 in)
1922
58.5 mm (2.3 in)
1923
73.7 mm (2.9 in)
1924
138.9 mm (5.5 in)
1925
73.2 mm (2.9 in)
1926
120.9 mm (4.8 in)
1927
75.5 mm (3.0 in)
1928
91.4 mm (3.6 in)
1929
97.3 mm (3.8 in)
1930
62.2 mm (2.4 in)
1931
67.8 mm (2.7 in)
1932
115.6 mm (4.6 in)
1933
92.7 mm (3.6 in)
1934
86.1 mm (3.4 in)
1935
94.3 mm (3.7 in)
1936
147.8 mm (5.8 in)
1937
115.8 mm (4.6 in)
1938
55.9 mm (2.2 in)
1939
79.2 mm (3.1 in)
1940
80.2 mm (3.2 in)
1941
150.7 mm (5.9 in)
1942
184.6 mm (7.3 in)
1943
49.5 mm (1.9 in)
1944
98.0 mm (3.9 in)
1945
92.7 mm (3.6 in)
1946
79.6 mm (3.1 in)
1947
108.2 mm (4.3 in)
1948
89.6 mm (3.5 in)
1949
106.7 mm (4.2 in)
1950
80.6 mm (3.2 in)
1951
69.8 mm (2.7 in)
1952
92.3 mm (3.6 in)
1953
61.4 mm (2.4 in)
1954
137.4 mm (5.4 in)
1955
124.0 mm (4.9 in)
1956
77.5 mm (3.1 in)
1957
83.8 mm (3.3 in)
1958
70.9 mm (2.8 in)
1959
115.5 mm (4.5 in)
1960
115.5 mm (4.5 in)
1961
79.3 mm (3.1 in)
1962
70.0 mm (2.8 in)
1963
89.0 mm (3.5 in)
1964
147.3 mm (5.8 in)
1965
55.1 mm (2.2 in)
1966
61.0 mm (2.4 in)
1967
89.5 mm (3.5 in)
1968
108.1 mm (4.3 in)
Longest dry spell (CDD)
The longest dry spell of the year at Westernport, 1894 to 1968. The record is 38 days in 1915, marked on the chart; the median year is 19 days.
Longest dry spell (CDD) at Westernport by year
Year
Longest dry spell (CDD)
1894
16 days
1895
28 days
1896
12 days
1897
17 days
1898
13 days
1899
22 days
1900
19 days
1901
24 days
1902
19 days
1903
18 days
1904
24 days
1905
24 days
1906
28 days
1907
11 days
1908
21 days
1909
26 days
1910
24 days
1911
25 days
1912
17 days
1913
17 days
1914
28 days
1915
38 days
1916
19 days
1917
30 days
1918
25 days
1919
21 days
1920
21 days
1921
15 days
1922
18 days
1923
23 days
1924
25 days
1925
16 days
1926
17 days
1927
14 days
1928
12 days
1929
24 days
1930
37 days
1931
15 days
1932
20 days
1933
11 days
1934
19 days
1935
13 days
1936
18 days
1937
13 days
1938
16 days
1939
15 days
1940
12 days
1941
21 days
1942
14 days
1943
26 days
1944
21 days
1945
13 days
1946
15 days
1947
35 days
1948
11 days
1949
17 days
1950
15 days
1951
22 days
1952
23 days
1953
35 days
1954
13 days
1955
18 days
1956
13 days
1957
27 days
1958
19 days
1959
20 days
1960
30 days
1961
11 days
1962
19 days
1963
27 days
1964
18 days
1965
17 days
1966
18 days
1967
16 days
1968
26 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
67 years with a frost
Across 67 years with a frost, the median last spring frost at Westernport falls on 30 April and the median first autumn frost on 9 October, which leaves a median of 167 days between them.
In 1934 to 1967 the median growing season was 168 days. That is 3 days more than in 1895 to 1926.
Fitted over all years, the growing season changes by +0.7 days per decade at this station.
Frost dates and growing season at Westernport
Measure
Median, all years
Earliest period (1895 to 1926)
Recent period (1934 to 1967)
Recent against earliest
Fitted trend
Last spring frost
30 April
2 May
23 April
9 days earlier
-0.7 days per decade
First autumn frost
9 October
11 October
7 October
4 days earlier
-0.1 days per decade
Growing days
167 days
165 days
168 days
3 days more
+0.7 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
72 years, 1895 to 1968
A day with at least 50.5 mm (2.0 in) of rain is expected about once in 2 years. A day with at least 162.2 mm (6.4 in) of rain is expected about once in 100 years.
Rainfall return levels at Westernport: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
50.5 mm (2.0 in)
5 years
68.2 mm (2.7 in)
10 years
83.7 mm (3.3 in)
25 years
108.9 mm (4.3 in)
50 years
132.9 mm (5.2 in)
100 years
162.2 mm (6.4 in)
Longer than the 72 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, 72 years of values from 1895 to 1968.
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: 147.3 mm (5.8 in) in 1964; 132.1 mm (5.2 in) in 1954; 129.5 mm (5.1 in) in 1942.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Westernport standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Westernport 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.