Record envelope, standing records and threshold days for Harrisville (USC00203624), Michigan, United States, with 75 years of record.
Key Facts for Harrisville
Harrisville (USC00203624) is a weather station in Michigan, United States at 44.65 latitude and -83.30 longitude, 198 m (650 ft) above sea level.
The station reports from 1891 to 1965, 75 years of record.
1,464 records set at Harrisville still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
Harrisville set a daily record high minimum temperature of 12.2 C (54.0 F) on 30 April 1965.
About the Station
Location: Michigan, United States, 44.65 latitude, -83.30 longitude.
Elevation: 198 m (650 ft).
Period of record: 1891 to 1965, 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 Harrisville. 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 Harrisville, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
15.0 C (59.0 F)
-29.4 C (-20.9 F)
n/a
n/a
Feb
14.4 C (57.9 F)
-33.3 C (-27.9 F)
n/a
n/a
Mar
27.2 C (81.0 F)
-29.4 C (-20.9 F)
n/a
n/a
Apr
35.0 C (95.0 F)
-18.3 C (-0.9 F)
n/a
n/a
May
35.0 C (95.0 F)
-7.2 C (19.0 F)
n/a
n/a
Jun
37.8 C (100.0 F)
-3.9 C (25.0 F)
n/a
n/a
Jul
40.6 C (105.1 F)
3.3 C (37.9 F)
n/a
n/a
Aug
41.7 C (107.1 F)
2.8 C (37.0 F)
n/a
n/a
Sep
37.8 C (100.0 F)
-3.3 C (26.1 F)
n/a
n/a
Oct
31.7 C (89.1 F)
-10.6 C (12.9 F)
n/a
n/a
Nov
25.6 C (78.1 F)
-19.4 C (-2.9 F)
n/a
n/a
Dec
15.6 C (60.1 F)
-25.6 C (-14.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Harrisville still stand. 1895 holds the most, with 37.
Standing records at Harrisville by the year they were set
Year set
Standing records
1891
6
1892
18
1893
19
1894
35
1895
37
1896
35
1897
17
1898
13
1899
21
1900
24
1901
12
1902
14
1903
27
1904
24
1905
12
1906
24
1907
22
1908
11
1909
17
1910
16
1911
19
1912
32
1913
28
1914
19
1915
18
1916
25
1917
18
1918
23
1919
18
1920
13
1921
32
1922
9
1923
24
1924
19
1925
29
1926
25
1927
21
1928
18
1929
21
1930
24
1931
33
1932
18
1933
30
1934
18
1935
15
1936
32
1937
12
1938
13
1939
23
1940
18
1941
15
1942
10
1943
19
1944
8
1945
19
1946
25
1947
16
1948
16
1949
24
1950
21
1951
20
1952
18
1953
17
1954
8
1955
16
1956
22
1957
17
1958
16
1959
18
1960
7
1961
6
1962
22
1963
24
1964
22
1965
7
All-Time Record Progression
1 new records
1 all-time records were set at Harrisville between 11 July 1936 and 11 July 1936. Each dot is a new record.
When Harrisville set new all-time records
Date
Kind
Detail
1936-07-11
Record high minimum temperature
Record high minimum temperature 30.0 C (86.0 F)
Wettest Day of Each Month
Aug: 80.8 mm (3.2 in)
The wettest day on record for each calendar month at Harrisville. The most was 80.8 mm (3.2 in) on 3 August 1915.
Record daily precipitation for each month at Harrisville
Month
Record daily precipitation (mm)
Date
Jan
45.7 mm (1.8 in)
19 January 1907
Feb
72.4 mm (2.9 in)
23 February 1922
Mar
43.2 mm (1.7 in)
3 March 1906
Apr
59.9 mm (2.4 in)
29 April 1905
May
70.6 mm (2.8 in)
22 May 1937
Jun
66.0 mm (2.6 in)
25 June 1898
Jul
77.7 mm (3.1 in)
4 July 1951
Aug
80.8 mm (3.2 in)
3 August 1915
Sep
58.4 mm (2.3 in)
29 September 1896
Oct
50.8 mm (2.0 in)
25 October 1918
Nov
50.0 mm (2.0 in)
16 November 1944
Dec
66.0 mm (2.6 in)
14 December 1891
Period of Record Coverage
1891 to 1965
Complete yearUnder 90 percent of days
75 years of record at Harrisville, 1891 to 1965. 7 years have data for under 90 percent of days and are left out of rankings: 1891, 1923, 1924, 1945, 1946, 1947, 1965.
Cooler than the station meanWarmer than the station mean
One stripe for each of 65 complete years at Harrisville, 1893 to 1964. Blue stripes are years cooler than the station's own mean of 6.6 C (43.8 F); red stripes are warmer. The coolest year was 1904, at 4.5 C (40.1 F), and the warmest was 1921, at 8.6 C (47.5 F). The strongest colour marks a difference of 2.1 C (3.8 F).
Annual mean temperature at Harrisville as warming stripes, 1893 to 1964
Year
Annual mean temperature
Difference from the station mean
1893
4.7 C
-1.84 C
1894
6.6 C
+0.05 C
1895
5.3 C
-1.30 C
1896
6.3 C
-0.25 C
1897
6.3 C
-0.24 C
1898
7.0 C
+0.43 C
1899
5.8 C
-0.76 C
1900
7.0 C
+0.39 C
1901
6.0 C
-0.60 C
1902
6.6 C
+0.06 C
1903
5.9 C
-0.71 C
1904
4.5 C
-2.09 C
1905
6.1 C
-0.52 C
1906
7.0 C
+0.46 C
1907
5.4 C
-1.20 C
1908
6.4 C
-0.18 C
1909
6.3 C
-0.28 C
1910
6.2 C
-0.34 C
1911
6.6 C
-0.01 C
1912
5.0 C
-1.59 C
1913
6.8 C
+0.20 C
1914
6.4 C
-0.13 C
1915
7.1 C
+0.56 C
1916
6.9 C
+0.35 C
1917
5.2 C
-1.37 C
1918
6.8 C
+0.24 C
1919
8.3 C
+1.69 C
1921
8.6 C
+2.02 C
1922
7.0 C
+0.45 C
1925
6.1 C
-0.49 C
1926
5.1 C
-1.50 C
1927
6.3 C
-0.25 C
1928
6.1 C
-0.43 C
1929
5.7 C
-0.87 C
1930
6.7 C
+0.12 C
1931
8.4 C
+1.86 C
1932
7.2 C
+0.60 C
1933
6.8 C
+0.22 C
1934
6.3 C
-0.26 C
1935
6.3 C
-0.30 C
1936
5.9 C
-0.69 C
1937
7.0 C
+0.46 C
1938
7.6 C
+1.03 C
1939
7.0 C
+0.39 C
1941
7.9 C
+1.35 C
1942
7.0 C
+0.39 C
1943
6.2 C
-0.39 C
1944
7.1 C
+0.54 C
1948
7.1 C
+0.53 C
1949
8.0 C
+1.46 C
1950
6.3 C
-0.25 C
1951
6.4 C
-0.16 C
1952
7.7 C
+1.14 C
1953
8.0 C
+1.45 C
1954
7.2 C
+0.63 C
1955
7.5 C
+0.97 C
1956
6.5 C
-0.09 C
1957
6.6 C
+0.05 C
1958
6.2 C
-0.33 C
1959
6.8 C
+0.18 C
1960
6.3 C
-0.29 C
1961
6.8 C
+0.27 C
1962
6.0 C
-0.59 C
1963
6.0 C
-0.56 C
1964
7.0 C
+0.47 C
The annual mean temperature here has risen by 0.13 C (0.04 to 0.23) per decade over 1893 to 1964. In Fahrenheit: 0.2 F (0.1 to 0.4) per decade. The slope is a straight line fitted to 65 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Harrisville
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.13 C (0.04 to 0.23) per decade
0.2 F (0.1 to 0.4) per decade
1893 to 1964
65
Rise
Mean daily maximum
0.13 C (0.03 to 0.23) per decade
0.2 F (0.1 to 0.4) per decade
1893 to 1964
65
Rise
Mean daily minimum
0.14 C (0.02 to 0.25) per decade
0.24 F (0.04 to 0.44) per decade
1893 to 1964
65
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
1891 to 1965
Yearly extremes at Harrisville: 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)
1918
35.0 C (95.0 F)
75
Coldest night (TNn)
-33.3 C (-27.9 F)
1918
-24.4 C (-11.9 F)
75
Wettest day (Rx1day)
80.8 mm (3.2 in)
1915
45.7 mm (1.8 in)
75
Wettest five days (Rx5day)
157.8 mm (6.2 in)
1892
66.3 mm (2.6 in)
75
Longest dry spell (CDD)
36 days
1919
17 days
75
Hottest day (TXx)
The hottest day of the year at Harrisville, 1891 to 1965. The record is 41.7 C (107.1 F) in 1918, marked on the chart; the median year is 35.0 C (95.0 F).
Hottest day (TXx) at Harrisville by year
Year
Hottest day (TXx)
1891
27.8 C (82.0 F)
1892
32.8 C (91.0 F)
1893
35.6 C (96.1 F)
1894
36.1 C (97.0 F)
1895
36.7 C (98.1 F)
1896
35.6 C (96.1 F)
1897
36.1 C (97.0 F)
1898
36.1 C (97.0 F)
1899
33.3 C (91.9 F)
1900
36.7 C (98.1 F)
1901
39.4 C (102.9 F)
1902
34.4 C (93.9 F)
1903
34.4 C (93.9 F)
1904
36.7 C (98.1 F)
1905
33.9 C (93.0 F)
1906
35.0 C (95.0 F)
1907
37.8 C (100.0 F)
1908
35.0 C (95.0 F)
1909
35.0 C (95.0 F)
1910
39.4 C (102.9 F)
1911
38.3 C (100.9 F)
1912
33.3 C (91.9 F)
1913
37.2 C (99.0 F)
1914
35.6 C (96.1 F)
1915
35.0 C (95.0 F)
1916
40.0 C (104.0 F)
1917
37.8 C (100.0 F)
1918
41.7 C (107.1 F)
1919
39.4 C (102.9 F)
1920
31.7 C (89.1 F)
1921
32.2 C (90.0 F)
1922
32.8 C (91.0 F)
1923
33.9 C (93.0 F)
1924
31.1 C (88.0 F)
1925
35.0 C (95.0 F)
1926
35.6 C (96.1 F)
1927
36.7 C (98.1 F)
1928
34.4 C (93.9 F)
1929
35.6 C (96.1 F)
1930
32.2 C (90.0 F)
1931
36.7 C (98.1 F)
1932
34.4 C (93.9 F)
1933
36.7 C (98.1 F)
1934
37.2 C (99.0 F)
1935
33.3 C (91.9 F)
1936
40.6 C (105.1 F)
1937
35.0 C (95.0 F)
1938
35.0 C (95.0 F)
1939
35.0 C (95.0 F)
1940
34.4 C (93.9 F)
1941
33.9 C (93.0 F)
1942
33.9 C (93.0 F)
1943
33.3 C (91.9 F)
1944
35.0 C (95.0 F)
1945
32.2 C (90.0 F)
1946
31.7 C (89.1 F)
1947
38.3 C (100.9 F)
1948
38.9 C (102.0 F)
1949
36.7 C (98.1 F)
1950
32.2 C (90.0 F)
1951
32.2 C (90.0 F)
1952
35.0 C (95.0 F)
1953
37.8 C (100.0 F)
1954
33.9 C (93.0 F)
1955
36.7 C (98.1 F)
1956
35.0 C (95.0 F)
1957
32.2 C (90.0 F)
1958
33.9 C (93.0 F)
1959
33.9 C (93.0 F)
1960
31.1 C (88.0 F)
1961
35.0 C (95.0 F)
1962
33.3 C (91.9 F)
1963
35.0 C (95.0 F)
1964
36.7 C (98.1 F)
1965
21.7 C (71.1 F)
Coldest night (TNn)
The coldest night of the year at Harrisville, 1891 to 1965. The record is -33.3 C (-27.9 F) in 1918, marked on the chart; the median year is -24.4 C (-11.9 F).
Coldest night (TNn) at Harrisville by year
Year
Coldest night (TNn)
1891
-12.2 C (10.0 F)
1892
-27.8 C (-18.0 F)
1893
-29.4 C (-20.9 F)
1894
-26.1 C (-15.0 F)
1895
-30.6 C (-23.1 F)
1896
-25.0 C (-13.0 F)
1897
-23.3 C (-9.9 F)
1898
-26.1 C (-15.0 F)
1899
-31.7 C (-25.1 F)
1900
-27.2 C (-17.0 F)
1901
-25.0 C (-13.0 F)
1902
-23.9 C (-11.0 F)
1903
-23.9 C (-11.0 F)
1904
-28.9 C (-20.0 F)
1905
-26.1 C (-15.0 F)
1906
-25.0 C (-13.0 F)
1907
-24.4 C (-11.9 F)
1908
-26.7 C (-16.1 F)
1909
-21.7 C (-7.1 F)
1910
-27.8 C (-18.0 F)
1911
-21.1 C (-6.0 F)
1912
-31.7 C (-25.1 F)
1913
-23.9 C (-11.0 F)
1914
-28.9 C (-20.0 F)
1915
-23.9 C (-11.0 F)
1916
-22.2 C (-8.0 F)
1917
-30.0 C (-22.0 F)
1918
-33.3 C (-27.9 F)
1919
-22.2 C (-8.0 F)
1920
-25.6 C (-14.1 F)
1921
-18.9 C (-2.0 F)
1922
-22.2 C (-8.0 F)
1923
-24.4 C (-11.9 F)
1924
-22.8 C (-9.0 F)
1925
-24.4 C (-11.9 F)
1926
-22.8 C (-9.0 F)
1927
-27.8 C (-18.0 F)
1928
-25.6 C (-14.1 F)
1929
-29.4 C (-20.9 F)
1930
-24.4 C (-11.9 F)
1931
-21.7 C (-7.1 F)
1932
-18.9 C (-2.0 F)
1933
-23.9 C (-11.0 F)
1934
-29.4 C (-20.9 F)
1935
-23.3 C (-9.9 F)
1936
-25.6 C (-14.1 F)
1937
-18.9 C (-2.0 F)
1938
-23.3 C (-9.9 F)
1939
-26.1 C (-15.0 F)
1940
-21.7 C (-7.1 F)
1941
-20.6 C (-5.1 F)
1942
-23.9 C (-11.0 F)
1943
-27.8 C (-18.0 F)
1944
-22.2 C (-8.0 F)
1945
-23.9 C (-11.0 F)
1946
-23.9 C (-11.0 F)
1947
-14.4 C (6.1 F)
1948
-25.0 C (-13.0 F)
1949
-20.6 C (-5.1 F)
1950
-23.3 C (-9.9 F)
1951
-28.3 C (-18.9 F)
1952
-22.8 C (-9.0 F)
1953
-19.4 C (-2.9 F)
1954
-22.2 C (-8.0 F)
1955
-21.7 C (-7.1 F)
1956
-21.1 C (-6.0 F)
1957
-24.4 C (-11.9 F)
1958
-25.0 C (-13.0 F)
1959
-31.1 C (-24.0 F)
1960
-23.3 C (-9.9 F)
1961
-24.4 C (-11.9 F)
1962
-29.4 C (-20.9 F)
1963
-29.4 C (-20.9 F)
1964
-21.1 C (-6.0 F)
1965
-25.6 C (-14.1 F)
Wettest day (Rx1day)
The wettest day of the year at Harrisville, 1891 to 1965. The record is 80.8 mm (3.2 in) in 1915, marked on the chart; the median year is 45.7 mm (1.8 in).
Wettest day (Rx1day) at Harrisville by year
Year
Wettest day (Rx1day)
1891
66.0 mm (2.6 in)
1892
68.6 mm (2.7 in)
1893
46.0 mm (1.8 in)
1894
63.5 mm (2.5 in)
1895
54.1 mm (2.1 in)
1896
60.5 mm (2.4 in)
1897
43.7 mm (1.7 in)
1898
66.0 mm (2.6 in)
1899
53.3 mm (2.1 in)
1900
67.1 mm (2.6 in)
1901
46.5 mm (1.8 in)
1902
58.9 mm (2.3 in)
1903
63.5 mm (2.5 in)
1904
43.9 mm (1.7 in)
1905
59.9 mm (2.4 in)
1906
45.7 mm (1.8 in)
1907
45.7 mm (1.8 in)
1908
34.0 mm (1.3 in)
1909
33.5 mm (1.3 in)
1910
48.5 mm (1.9 in)
1911
31.0 mm (1.2 in)
1912
71.9 mm (2.8 in)
1913
40.6 mm (1.6 in)
1914
50.8 mm (2.0 in)
1915
80.8 mm (3.2 in)
1916
40.6 mm (1.6 in)
1917
34.8 mm (1.4 in)
1918
50.8 mm (2.0 in)
1919
25.4 mm (1.0 in)
1920
39.9 mm (1.6 in)
1921
55.9 mm (2.2 in)
1922
72.4 mm (2.9 in)
1923
45.0 mm (1.8 in)
1924
43.2 mm (1.7 in)
1925
33.0 mm (1.3 in)
1926
50.8 mm (2.0 in)
1927
54.9 mm (2.2 in)
1928
47.8 mm (1.9 in)
1929
52.1 mm (2.1 in)
1930
36.8 mm (1.4 in)
1931
41.9 mm (1.6 in)
1932
46.2 mm (1.8 in)
1933
34.3 mm (1.4 in)
1934
29.2 mm (1.1 in)
1935
26.2 mm (1.0 in)
1936
30.5 mm (1.2 in)
1937
70.6 mm (2.8 in)
1938
39.6 mm (1.6 in)
1939
40.4 mm (1.6 in)
1940
38.4 mm (1.5 in)
1941
39.6 mm (1.6 in)
1942
60.7 mm (2.4 in)
1943
43.2 mm (1.7 in)
1944
50.0 mm (2.0 in)
1945
46.5 mm (1.8 in)
1946
20.3 mm (0.8 in)
1947
51.6 mm (2.0 in)
1948
32.8 mm (1.3 in)
1949
38.1 mm (1.5 in)
1950
48.3 mm (1.9 in)
1951
77.7 mm (3.1 in)
1952
54.9 mm (2.2 in)
1953
43.7 mm (1.7 in)
1954
38.6 mm (1.5 in)
1955
64.3 mm (2.5 in)
1956
21.3 mm (0.8 in)
1957
56.4 mm (2.2 in)
1958
29.7 mm (1.2 in)
1959
39.4 mm (1.6 in)
1960
45.7 mm (1.8 in)
1961
48.3 mm (1.9 in)
1962
38.1 mm (1.5 in)
1963
48.3 mm (1.9 in)
1964
43.2 mm (1.7 in)
1965
19.1 mm (0.8 in)
Wettest five days (Rx5day)
The wettest five days of the year at Harrisville, 1891 to 1965. The record is 157.8 mm (6.2 in) in 1892, marked on the chart; the median year is 66.3 mm (2.6 in).
Wettest five days (Rx5day) at Harrisville by year
Year
Wettest five days (Rx5day)
1891
78.8 mm (3.1 in)
1892
157.8 mm (6.2 in)
1893
66.3 mm (2.6 in)
1894
110.3 mm (4.3 in)
1895
59.2 mm (2.3 in)
1896
107.0 mm (4.2 in)
1897
102.2 mm (4.0 in)
1898
117.1 mm (4.6 in)
1899
91.9 mm (3.6 in)
1900
85.1 mm (3.4 in)
1901
60.0 mm (2.4 in)
1902
95.9 mm (3.8 in)
1903
65.0 mm (2.6 in)
1904
61.0 mm (2.4 in)
1905
90.2 mm (3.6 in)
1906
67.0 mm (2.6 in)
1907
72.4 mm (2.9 in)
1908
51.2 mm (2.0 in)
1909
50.8 mm (2.0 in)
1910
48.5 mm (1.9 in)
1911
53.5 mm (2.1 in)
1912
78.8 mm (3.1 in)
1913
60.4 mm (2.4 in)
1914
51.4 mm (2.0 in)
1915
98.6 mm (3.9 in)
1916
49.2 mm (1.9 in)
1917
69.6 mm (2.7 in)
1918
57.2 mm (2.3 in)
1919
48.8 mm (1.9 in)
1920
50.8 mm (2.0 in)
1921
59.7 mm (2.4 in)
1922
78.7 mm (3.1 in)
1923
53.4 mm (2.1 in)
1924
83.6 mm (3.3 in)
1925
68.0 mm (2.7 in)
1926
65.2 mm (2.6 in)
1927
76.0 mm (3.0 in)
1928
71.6 mm (2.8 in)
1929
83.6 mm (3.3 in)
1930
45.0 mm (1.8 in)
1931
82.8 mm (3.3 in)
1932
102.8 mm (4.0 in)
1933
62.7 mm (2.5 in)
1934
45.7 mm (1.8 in)
1935
53.1 mm (2.1 in)
1936
40.6 mm (1.6 in)
1937
77.7 mm (3.1 in)
1938
75.2 mm (3.0 in)
1939
75.2 mm (3.0 in)
1940
55.7 mm (2.2 in)
1941
53.3 mm (2.1 in)
1942
42.4 mm (1.7 in)
1943
60.9 mm (2.4 in)
1944
63.5 mm (2.5 in)
1945
83.9 mm (3.3 in)
1946
44.5 mm (1.8 in)
1947
76.2 mm (3.0 in)
1948
53.9 mm (2.1 in)
1949
64.0 mm (2.5 in)
1950
66.5 mm (2.6 in)
1951
113.3 mm (4.5 in)
1952
98.6 mm (3.9 in)
1953
75.7 mm (3.0 in)
1954
82.1 mm (3.2 in)
1955
88.7 mm (3.5 in)
1956
44.5 mm (1.8 in)
1957
69.1 mm (2.7 in)
1958
48.3 mm (1.9 in)
1959
58.1 mm (2.3 in)
1960
50.6 mm (2.0 in)
1961
78.7 mm (3.1 in)
1962
50.8 mm (2.0 in)
1963
75.0 mm (3.0 in)
1964
52.1 mm (2.1 in)
1965
35.6 mm (1.4 in)
Longest dry spell (CDD)
The longest dry spell of the year at Harrisville, 1891 to 1965. The record is 36 days in 1919, marked on the chart; the median year is 17 days.
Longest dry spell (CDD) at Harrisville by year
Year
Longest dry spell (CDD)
1891
15 days
1892
15 days
1893
23 days
1894
34 days
1895
13 days
1896
23 days
1897
12 days
1898
17 days
1899
15 days
1900
17 days
1901
16 days
1902
14 days
1903
15 days
1904
11 days
1905
13 days
1906
17 days
1907
15 days
1908
23 days
1909
17 days
1910
22 days
1911
17 days
1912
16 days
1913
21 days
1914
24 days
1915
22 days
1916
19 days
1917
25 days
1918
16 days
1919
36 days
1920
21 days
1921
23 days
1922
25 days
1923
13 days
1924
21 days
1925
17 days
1926
13 days
1927
28 days
1928
12 days
1929
17 days
1930
19 days
1931
15 days
1932
17 days
1933
17 days
1934
25 days
1935
17 days
1936
21 days
1937
15 days
1938
22 days
1939
20 days
1940
17 days
1941
8 days
1942
4 days
1943
23 days
1944
29 days
1945
17 days
1946
29 days
1947
29 days
1948
20 days
1949
11 days
1950
18 days
1951
13 days
1952
14 days
1953
19 days
1954
13 days
1955
12 days
1956
14 days
1957
21 days
1958
30 days
1959
16 days
1960
13 days
1961
18 days
1962
25 days
1963
23 days
1964
23 days
1965
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
65 years with a frost
Across 65 years with a frost, the median last spring frost at Harrisville falls on 18 May and the median first autumn frost on 29 September, which leaves a median of 135 days between them.
In 1931 to 1964 the median growing season was 134 days. That is 7 days fewer than in 1893 to 1925.
Fitted over all years, the growing season changes by -1.8 days per decade at this station.
Frost dates and growing season at Harrisville
Measure
Median, all years
Earliest period (1893 to 1925)
Recent period (1931 to 1964)
Recent against earliest
Fitted trend
Last spring frost
18 May
15 May
18 May
3 days later
+1.1 days per decade
First autumn frost
29 September
3 October
29 September
4 days earlier
-0.7 days per decade
Growing days
135 days
141 days
134 days
7 days fewer
-1.8 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
61 years, 1893 to 1964
A day with at least 46.0 mm (1.8 in) of rain is expected about once in 2 years. A day with at least 85.1 mm (3.4 in) of rain is expected about once in 100 years.
Rainfall return levels at Harrisville: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
46.0 mm (1.8 in)
5 years
58.3 mm (2.3 in)
10 years
65.6 mm (2.6 in)
25 years
74.1 mm (2.9 in)
50 years
79.8 mm (3.1 in)
100 years
85.1 mm (3.4 in)
Longer than the 61 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, 61 years of values from 1893 to 1964.
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: 80.8 mm (3.2 in) in 1915; 77.7 mm (3.1 in) in 1951; 72.4 mm (2.9 in) in 1922.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Harrisville standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Harrisville 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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.