Record envelope, standing records and threshold days for Mio Hydro Plt (USC00205531), Michigan, United States, with 115 years of record.
Key Facts for Mio Hydro Plt
Mio Hydro Plt (USC00205531) is a weather station in Michigan, United States at 44.66 latitude and -84.13 longitude, 293 m (960 ft) above sea level.
The station reports from 1892 to 2006, 115 years of record.
1,464 records set at Mio Hydro Plt still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Mio Hydro Plt set a daily record high maximum temperature of 10.6 C (51.1 F) on 18 December 2006.
About the Station
Location: Michigan, United States, 44.66 latitude, -84.13 longitude.
Elevation: 293 m (960 ft).
Period of record: 1892 to 2006, 115 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.
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 Mio Hydro Plt. 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 Mio Hydro Plt, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
16.1 C (61.0 F)
-38.9 C (-38.0 F)
n/a
n/a
Feb
17.2 C (63.0 F)
-43.9 C (-47.0 F)
n/a
n/a
Mar
25.6 C (78.1 F)
-39.4 C (-38.9 F)
n/a
n/a
Apr
32.2 C (90.0 F)
-30.6 C (-23.1 F)
n/a
n/a
May
35.6 C (96.1 F)
-8.3 C (17.1 F)
n/a
n/a
Jun
39.4 C (102.9 F)
-3.3 C (26.1 F)
n/a
n/a
Jul
44.4 C (111.9 F)
-1.7 C (28.9 F)
n/a
n/a
Aug
37.8 C (100.0 F)
-4.4 C (24.1 F)
n/a
n/a
Sep
35.6 C (96.1 F)
-7.2 C (19.0 F)
n/a
n/a
Oct
30.6 C (87.1 F)
-15.0 C (5.0 F)
n/a
n/a
Nov
23.9 C (75.0 F)
-23.9 C (-11.0 F)
n/a
n/a
Dec
18.9 C (66.0 F)
-36.1 C (-33.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Mio Hydro Plt still stand. 1918 holds the most, with 39.
Standing records at Mio Hydro Plt by the year they were set
Year set
Standing records
1893
7
1894
2
1896
33
1897
18
1898
16
1899
35
1900
8
1901
13
1902
12
1903
20
1904
12
1906
16
1917
14
1918
39
1919
17
1920
24
1921
32
1922
6
1923
25
1924
12
1925
24
1926
22
1927
24
1928
14
1929
26
1930
31
1931
28
1932
11
1933
21
1934
31
1935
6
1936
39
1937
7
1938
13
1939
16
1940
9
1941
20
1942
14
1943
16
1944
23
1945
26
1946
20
1947
27
1948
17
1949
18
1950
25
1951
14
1952
7
1953
11
1954
11
1955
10
1956
12
1957
7
1958
8
1959
8
1960
1
1961
4
1962
5
1963
13
1964
18
1965
12
1966
12
1967
7
1968
10
1969
10
1970
7
1971
10
1972
10
1973
15
1974
14
1975
8
1976
13
1977
11
1978
3
1979
14
1980
9
1981
13
1982
10
1983
12
1984
11
1985
8
1986
11
1987
12
1988
10
1989
14
1990
17
1991
18
1992
5
1993
5
1994
8
1995
9
1996
9
1997
9
1998
15
1999
13
2000
10
2001
11
2002
12
2003
7
2004
5
2005
14
2006
13
All-Time Record Progression
3 new records
3 all-time records were set at Mio Hydro Plt between 20 August 1947 and 18 July 2006. Each dot is a new record.
When Mio Hydro Plt set new all-time records
Date
Kind
Detail
1947-08-20
Record daily precipitation
Record daily precipitation 77.0 mm (3.0 in)
1990-08-19
Record daily precipitation
Record daily precipitation 79.5 mm (3.1 in)
2006-07-18
Record daily precipitation
Record daily precipitation 95.3 mm (3.8 in)
Wettest Day of Each Month
Jul: 95.3 mm (3.8 in)
The wettest day on record for each calendar month at Mio Hydro Plt. The most was 95.3 mm (3.8 in) on 18 July 2006.
Record daily precipitation for each month at Mio Hydro Plt
Month
Record daily precipitation (mm)
Date
Jan
33.8 mm (1.3 in)
12 January 1898
Feb
36.6 mm (1.4 in)
20 February 1971
Mar
53.8 mm (2.1 in)
31 March 1998
Apr
40.4 mm (1.6 in)
25 April 1929
May
53.1 mm (2.1 in)
26 May 1932
Jun
75.7 mm (3.0 in)
28 June 1931
Jul
95.3 mm (3.8 in)
18 July 2006
Aug
79.5 mm (3.1 in)
19 August 1990
Sep
58.7 mm (2.3 in)
26 September 2005
Oct
53.3 mm (2.1 in)
20 October 1988
Nov
44.5 mm (1.8 in)
29 November 1919
Dec
50.8 mm (2.0 in)
13 December 2004
Period of Record Coverage
1892 to 2006
Complete yearUnder 90 percent of days
104 years of record at Mio Hydro Plt, 1892 to 2006. 14 years have data for under 90 percent of days and are left out of rankings: 1892, 1893, 1894, 1896, 1900, 1901, 1904, 1905 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 87 complete years at Mio Hydro Plt, 1897 to 2006. Blue stripes are years cooler than the station's own mean of 6.3 C (43.3 F); red stripes are warmer. The coolest year was 1924, at 4.2 C (39.6 F), and the warmest was 1921, at 9.1 C (48.4 F). The strongest colour marks a difference of 2.9 C (5.2 F).
Annual mean temperature at Mio Hydro Plt as warming stripes, 1897 to 2006
Year
Annual mean temperature
Difference from the station mean
1897
5.3 C
-1.01 C
1898
6.0 C
-0.33 C
1899
5.3 C
-0.99 C
1902
6.1 C
-0.19 C
1903
5.4 C
-0.84 C
1918
5.7 C
-0.59 C
1919
6.9 C
+0.63 C
1920
6.3 C
+0.01 C
1921
9.1 C
+2.84 C
1922
6.9 C
+0.57 C
1923
4.9 C
-1.37 C
1924
4.2 C
-2.04 C
1925
5.2 C
-1.06 C
1926
4.5 C
-1.83 C
1927
5.7 C
-0.56 C
1928
5.5 C
-0.81 C
1929
5.1 C
-1.17 C
1930
6.6 C
+0.33 C
1931
7.9 C
+1.64 C
1932
6.0 C
-0.30 C
1933
5.8 C
-0.46 C
1934
4.9 C
-1.38 C
1935
4.9 C
-1.43 C
1936
5.0 C
-1.25 C
1937
5.7 C
-0.61 C
1938
6.8 C
+0.54 C
1939
6.4 C
+0.15 C
1940
5.4 C
-0.86 C
1941
6.9 C
+0.64 C
1942
6.4 C
+0.12 C
1943
5.3 C
-0.97 C
1944
6.9 C
+0.64 C
1945
5.6 C
-0.66 C
1946
6.0 C
-0.26 C
1947
5.6 C
-0.72 C
1948
5.5 C
-0.75 C
1949
6.6 C
+0.36 C
1950
5.3 C
-1.03 C
1951
5.8 C
-0.49 C
1952
6.6 C
+0.31 C
1953
7.2 C
+0.91 C
1954
6.0 C
-0.26 C
1955
6.6 C
+0.34 C
1956
5.3 C
-0.97 C
1957
5.8 C
-0.48 C
1958
5.4 C
-0.92 C
1959
5.9 C
-0.34 C
1961
6.1 C
-0.23 C
1962
5.3 C
-0.96 C
1963
5.3 C
-0.96 C
1964
6.5 C
+0.17 C
1965
6.5 C
+0.22 C
1966
6.7 C
+0.38 C
1967
6.1 C
-0.14 C
1968
6.9 C
+0.58 C
1969
6.5 C
+0.18 C
1970
6.8 C
+0.52 C
1971
7.0 C
+0.73 C
1972
5.8 C
-0.52 C
1973
7.9 C
+1.57 C
1974
6.5 C
+0.19 C
1975
7.2 C
+0.93 C
1976
6.2 C
-0.09 C
1977
7.0 C
+0.75 C
1978
6.1 C
-0.19 C
1979
5.7 C
-0.60 C
1980
5.4 C
-0.84 C
1981
6.6 C
+0.28 C
1983
7.0 C
+0.69 C
1984
6.6 C
+0.35 C
1985
6.2 C
-0.10 C
1986
6.7 C
+0.39 C
1988
6.6 C
+0.35 C
1990
7.3 C
+0.97 C
1991
7.4 C
+1.10 C
1993
6.0 C
-0.31 C
1996
5.5 C
-0.74 C
1997
6.0 C
-0.33 C
1998
8.9 C
+2.57 C
1999
7.6 C
+1.36 C
2000
6.9 C
+0.57 C
2001
8.2 C
+1.89 C
2002
7.5 C
+1.17 C
2003
6.6 C
+0.27 C
2004
7.0 C
+0.72 C
2005
7.9 C
+1.60 C
2006
8.6 C
+2.27 C
The annual mean temperature here has risen by 0.2 C (0.1 to 0.2) per decade over 1897 to 2006. In Fahrenheit: 0.3 F (0.2 to 0.4) per decade. The slope is a straight line fitted to 87 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Mio Hydro Plt
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.2 C (0.1 to 0.2) per decade
0.3 F (0.2 to 0.4) per decade
1897 to 2006
87
Rise
Mean daily maximum
0.1 C (0.1 to 0.2) per decade
0.2 F (0.1 to 0.3) per decade
1897 to 2006
87
Rise
Mean daily minimum
0.2 C (0.1 to 0.3) per decade
0.4 F (0.2 to 0.5) per decade
1897 to 2006
87
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
1892 to 2006
Yearly extremes at Mio Hydro Plt: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
44.4 C (111.9 F)
1936
34.4 C (93.9 F)
104
Coldest night (TNn)
-43.9 C (-47.0 F)
1918
-30.6 C (-23.1 F)
104
Wettest day (Rx1day)
95.3 mm (3.8 in)
2006
40.6 mm (1.6 in)
102
Wettest five days (Rx5day)
115.9 mm (4.6 in)
1987
63.3 mm (2.5 in)
102
Longest dry spell (CDD)
42 days
1995
20 days
102
Hottest day (TXx)
The hottest day of the year at Mio Hydro Plt, 1892 to 2006. The record is 44.4 C (111.9 F) in 1936, marked on the chart; the median year is 34.4 C (93.9 F).
Hottest day (TXx) at Mio Hydro Plt by year
Year
Hottest day (TXx)
1892
26.7 C (80.1 F)
1893
37.8 C (100.0 F)
1894
30.6 C (87.1 F)
1896
26.1 C (79.0 F)
1897
36.1 C (97.0 F)
1898
34.4 C (93.9 F)
1899
35.0 C (95.0 F)
1900
13.9 C (57.0 F)
1901
37.2 C (99.0 F)
1902
31.1 C (88.0 F)
1903
32.2 C (90.0 F)
1904
32.2 C (90.0 F)
1905
15.6 C (60.1 F)
1906
32.2 C (90.0 F)
1917
36.1 C (97.0 F)
1918
37.8 C (100.0 F)
1919
36.7 C (98.1 F)
1920
33.3 C (91.9 F)
1921
42.2 C (108.0 F)
1922
33.3 C (91.9 F)
1923
35.0 C (95.0 F)
1924
32.2 C (90.0 F)
1925
34.4 C (93.9 F)
1926
35.6 C (96.1 F)
1927
36.1 C (97.0 F)
1928
36.7 C (98.1 F)
1929
33.9 C (93.0 F)
1930
34.4 C (93.9 F)
1931
36.7 C (98.1 F)
1932
33.3 C (91.9 F)
1933
36.7 C (98.1 F)
1934
38.9 C (102.0 F)
1935
32.2 C (90.0 F)
1936
44.4 C (111.9 F)
1937
36.1 C (97.0 F)
1938
36.1 C (97.0 F)
1939
35.0 C (95.0 F)
1940
35.0 C (95.0 F)
1941
36.1 C (97.0 F)
1942
35.0 C (95.0 F)
1943
33.3 C (91.9 F)
1944
36.1 C (97.0 F)
1945
35.6 C (96.1 F)
1946
33.3 C (91.9 F)
1947
37.2 C (99.0 F)
1948
37.2 C (99.0 F)
1949
35.6 C (96.1 F)
1950
33.3 C (91.9 F)
1951
32.2 C (90.0 F)
1952
34.4 C (93.9 F)
1953
35.0 C (95.0 F)
1954
32.2 C (90.0 F)
1955
37.8 C (100.0 F)
1956
35.6 C (96.1 F)
1957
33.3 C (91.9 F)
1958
32.2 C (90.0 F)
1959
33.3 C (91.9 F)
1960
32.2 C (90.0 F)
1961
33.3 C (91.9 F)
1962
32.8 C (91.0 F)
1963
33.9 C (93.0 F)
1964
35.0 C (95.0 F)
1965
33.9 C (93.0 F)
1966
36.1 C (97.0 F)
1967
30.0 C (86.0 F)
1968
33.3 C (91.9 F)
1969
33.3 C (91.9 F)
1970
34.4 C (93.9 F)
1971
35.6 C (96.1 F)
1972
32.8 C (91.0 F)
1973
35.0 C (95.0 F)
1974
33.3 C (91.9 F)
1975
35.6 C (96.1 F)
1976
33.3 C (91.9 F)
1977
36.1 C (97.0 F)
1978
32.8 C (91.0 F)
1979
32.2 C (90.0 F)
1980
32.8 C (91.0 F)
1981
34.4 C (93.9 F)
1982
32.2 C (90.0 F)
1983
37.2 C (99.0 F)
1984
33.3 C (91.9 F)
1985
33.9 C (93.0 F)
1986
35.0 C (95.0 F)
1987
37.8 C (100.0 F)
1988
38.3 C (100.9 F)
1989
35.0 C (95.0 F)
1990
35.0 C (95.0 F)
1991
33.9 C (93.0 F)
1992
35.0 C (95.0 F)
1993
33.3 C (91.9 F)
1994
36.7 C (98.1 F)
1995
39.4 C (102.9 F)
1996
33.3 C (91.9 F)
1997
33.9 C (93.0 F)
1998
36.1 C (97.0 F)
1999
33.9 C (93.0 F)
2000
30.6 C (87.1 F)
2001
37.2 C (99.0 F)
2002
35.6 C (96.1 F)
2003
32.8 C (91.0 F)
2004
32.2 C (90.0 F)
2005
35.0 C (95.0 F)
2006
36.1 C (97.0 F)
Coldest night (TNn)
The coldest night of the year at Mio Hydro Plt, 1892 to 2006. The record is -43.9 C (-47.0 F) in 1918, marked on the chart; the median year is -30.6 C (-23.1 F).
Coldest night (TNn) at Mio Hydro Plt by year
Year
Coldest night (TNn)
1892
0.0 C (32.0 F)
1893
-22.8 C (-9.0 F)
1894
-28.9 C (-20.0 F)
1896
-17.2 C (1.0 F)
1897
-28.9 C (-20.0 F)
1898
-31.1 C (-24.0 F)
1899
-38.9 C (-38.0 F)
1900
-28.9 C (-20.0 F)
1901
-22.2 C (-8.0 F)
1902
-25.6 C (-14.1 F)
1903
-28.9 C (-20.0 F)
1904
-31.7 C (-25.1 F)
1905
-20.0 C (-4.0 F)
1906
-30.6 C (-23.1 F)
1917
-36.1 C (-33.0 F)
1918
-43.9 C (-47.0 F)
1919
-28.9 C (-20.0 F)
1920
-36.7 C (-34.1 F)
1921
-25.6 C (-14.1 F)
1922
-33.3 C (-27.9 F)
1923
-31.1 C (-24.0 F)
1924
-34.4 C (-29.9 F)
1925
-35.0 C (-31.0 F)
1926
-33.3 C (-27.9 F)
1927
-37.2 C (-35.0 F)
1928
-37.8 C (-36.0 F)
1929
-41.7 C (-43.1 F)
1930
-32.2 C (-26.0 F)
1931
-26.7 C (-16.1 F)
1932
-27.8 C (-18.0 F)
1933
-36.1 C (-33.0 F)
1934
-42.8 C (-45.0 F)
1935
-34.4 C (-29.9 F)
1936
-37.2 C (-35.0 F)
1937
-26.7 C (-16.1 F)
1938
-33.9 C (-29.0 F)
1939
-31.7 C (-25.1 F)
1940
-31.7 C (-25.1 F)
1941
-33.9 C (-29.0 F)
1942
-33.9 C (-29.0 F)
1943
-39.4 C (-38.9 F)
1944
-30.0 C (-22.0 F)
1945
-31.7 C (-25.1 F)
1946
-31.7 C (-25.1 F)
1947
-34.4 C (-29.9 F)
1948
-36.1 C (-33.0 F)
1949
-23.9 C (-11.0 F)
1950
-32.2 C (-26.0 F)
1951
-38.9 C (-38.0 F)
1952
-31.7 C (-25.1 F)
1953
-27.8 C (-18.0 F)
1954
-30.0 C (-22.0 F)
1955
-30.6 C (-23.1 F)
1956
-26.1 C (-15.0 F)
1957
-28.3 C (-18.9 F)
1958
-32.2 C (-26.0 F)
1959
-35.6 C (-32.1 F)
1960
-28.3 C (-18.9 F)
1961
-29.4 C (-20.9 F)
1962
-33.3 C (-27.9 F)
1963
-32.2 C (-26.0 F)
1964
-27.8 C (-18.0 F)
1965
-28.3 C (-18.9 F)
1966
-27.8 C (-18.0 F)
1967
-31.7 C (-25.1 F)
1968
-32.2 C (-26.0 F)
1969
-25.0 C (-13.0 F)
1970
-32.2 C (-26.0 F)
1971
-29.4 C (-20.9 F)
1972
-27.8 C (-18.0 F)
1973
-30.6 C (-23.1 F)
1974
-28.3 C (-18.9 F)
1975
-28.3 C (-18.9 F)
1976
-31.7 C (-25.1 F)
1977
-33.3 C (-27.9 F)
1978
-30.6 C (-23.1 F)
1979
-38.9 C (-38.0 F)
1980
-30.0 C (-22.0 F)
1981
-35.0 C (-31.0 F)
1982
-30.0 C (-22.0 F)
1983
-26.7 C (-16.1 F)
1984
-33.3 C (-27.9 F)
1985
-31.7 C (-25.1 F)
1986
-28.9 C (-20.0 F)
1987
-31.7 C (-25.1 F)
1988
-28.3 C (-18.9 F)
1989
-27.8 C (-18.0 F)
1990
-23.9 C (-11.0 F)
1991
-26.7 C (-16.1 F)
1992
-27.8 C (-18.0 F)
1993
-30.6 C (-23.1 F)
1994
-33.9 C (-29.0 F)
1995
-27.2 C (-17.0 F)
1996
-35.0 C (-31.0 F)
1997
-28.3 C (-18.9 F)
1998
-23.9 C (-11.0 F)
1999
-26.7 C (-16.1 F)
2000
-27.2 C (-17.0 F)
2001
-23.9 C (-11.0 F)
2002
-23.9 C (-11.0 F)
2003
-28.9 C (-20.0 F)
2004
-29.4 C (-20.9 F)
2005
-28.3 C (-18.9 F)
2006
-20.6 C (-5.1 F)
Wettest day (Rx1day)
The wettest day of the year at Mio Hydro Plt, 1892 to 2006. The record is 95.3 mm (3.8 in) in 2006, marked on the chart; the median year is 40.6 mm (1.6 in).
Wettest day (Rx1day) at Mio Hydro Plt by year
Year
Wettest day (Rx1day)
1892
57.9 mm (2.3 in)
1893
n/a
1894
n/a
1896
50.8 mm (2.0 in)
1897
38.1 mm (1.5 in)
1898
66.0 mm (2.6 in)
1899
48.0 mm (1.9 in)
1900
30.5 mm (1.2 in)
1901
40.6 mm (1.6 in)
1902
33.8 mm (1.3 in)
1903
34.5 mm (1.4 in)
1904
34.5 mm (1.4 in)
1905
21.8 mm (0.9 in)
1906
45.7 mm (1.8 in)
1917
33.0 mm (1.3 in)
1918
43.9 mm (1.7 in)
1919
50.8 mm (2.0 in)
1920
31.2 mm (1.2 in)
1921
68.6 mm (2.7 in)
1922
49.3 mm (1.9 in)
1923
42.9 mm (1.7 in)
1924
41.9 mm (1.6 in)
1925
35.6 mm (1.4 in)
1926
50.8 mm (2.0 in)
1927
40.1 mm (1.6 in)
1928
37.8 mm (1.5 in)
1929
40.4 mm (1.6 in)
1930
41.9 mm (1.6 in)
1931
75.7 mm (3.0 in)
1932
53.1 mm (2.1 in)
1933
25.9 mm (1.0 in)
1934
43.9 mm (1.7 in)
1935
37.6 mm (1.5 in)
1936
33.0 mm (1.3 in)
1937
53.1 mm (2.1 in)
1938
50.3 mm (2.0 in)
1939
25.4 mm (1.0 in)
1940
49.5 mm (1.9 in)
1941
53.3 mm (2.1 in)
1942
39.6 mm (1.6 in)
1943
55.1 mm (2.2 in)
1944
29.0 mm (1.1 in)
1945
34.5 mm (1.4 in)
1946
39.6 mm (1.6 in)
1947
77.0 mm (3.0 in)
1948
42.2 mm (1.7 in)
1949
26.2 mm (1.0 in)
1950
39.1 mm (1.5 in)
1951
47.5 mm (1.9 in)
1952
32.5 mm (1.3 in)
1953
40.1 mm (1.6 in)
1954
34.3 mm (1.4 in)
1955
33.3 mm (1.3 in)
1956
31.5 mm (1.2 in)
1957
41.4 mm (1.6 in)
1958
27.4 mm (1.1 in)
1959
40.1 mm (1.6 in)
1960
63.8 mm (2.5 in)
1961
49.3 mm (1.9 in)
1962
31.8 mm (1.3 in)
1963
56.9 mm (2.2 in)
1964
49.5 mm (1.9 in)
1965
32.3 mm (1.3 in)
1966
28.4 mm (1.1 in)
1967
65.0 mm (2.6 in)
1968
34.5 mm (1.4 in)
1969
44.5 mm (1.8 in)
1970
31.2 mm (1.2 in)
1971
36.6 mm (1.4 in)
1972
50.8 mm (2.0 in)
1973
43.2 mm (1.7 in)
1974
31.8 mm (1.3 in)
1975
42.7 mm (1.7 in)
1976
30.2 mm (1.2 in)
1977
25.9 mm (1.0 in)
1978
54.1 mm (2.1 in)
1979
46.2 mm (1.8 in)
1980
40.6 mm (1.6 in)
1981
33.0 mm (1.3 in)
1982
27.4 mm (1.1 in)
1983
35.6 mm (1.4 in)
1984
59.7 mm (2.4 in)
1985
43.7 mm (1.7 in)
1986
40.1 mm (1.6 in)
1987
48.8 mm (1.9 in)
1988
53.3 mm (2.1 in)
1989
26.7 mm (1.1 in)
1990
79.5 mm (3.1 in)
1991
49.3 mm (1.9 in)
1992
60.5 mm (2.4 in)
1993
72.4 mm (2.9 in)
1994
34.0 mm (1.3 in)
1995
22.6 mm (0.9 in)
1996
24.1 mm (0.9 in)
1997
36.6 mm (1.4 in)
1998
53.8 mm (2.1 in)
1999
60.7 mm (2.4 in)
2000
39.4 mm (1.6 in)
2001
36.3 mm (1.4 in)
2002
33.3 mm (1.3 in)
2003
41.1 mm (1.6 in)
2004
50.8 mm (2.0 in)
2005
58.7 mm (2.3 in)
2006
95.3 mm (3.8 in)
Wettest five days (Rx5day)
The wettest five days of the year at Mio Hydro Plt, 1892 to 2006. The record is 115.9 mm (4.6 in) in 1987, marked on the chart; the median year is 63.3 mm (2.5 in).
Wettest five days (Rx5day) at Mio Hydro Plt by year
Year
Wettest five days (Rx5day)
1892
57.9 mm (2.3 in)
1893
n/a
1894
n/a
1896
84.3 mm (3.3 in)
1897
76.6 mm (3.0 in)
1898
109.4 mm (4.3 in)
1899
88.5 mm (3.5 in)
1900
36.6 mm (1.4 in)
1901
71.3 mm (2.8 in)
1902
53.6 mm (2.1 in)
1903
62.9 mm (2.5 in)
1904
47.5 mm (1.9 in)
1905
28.3 mm (1.1 in)
1906
77.5 mm (3.1 in)
1917
36.4 mm (1.4 in)
1918
71.2 mm (2.8 in)
1919
64.4 mm (2.5 in)
1920
53.4 mm (2.1 in)
1921
79.3 mm (3.1 in)
1922
79.2 mm (3.1 in)
1923
61.7 mm (2.4 in)
1924
91.9 mm (3.6 in)
1925
57.4 mm (2.3 in)
1926
55.4 mm (2.2 in)
1927
62.6 mm (2.5 in)
1928
62.0 mm (2.4 in)
1929
48.3 mm (1.9 in)
1930
45.7 mm (1.8 in)
1931
81.8 mm (3.2 in)
1932
58.9 mm (2.3 in)
1933
53.1 mm (2.1 in)
1934
58.1 mm (2.3 in)
1935
64.8 mm (2.6 in)
1936
50.5 mm (2.0 in)
1937
55.1 mm (2.2 in)
1938
73.4 mm (2.9 in)
1939
35.8 mm (1.4 in)
1940
91.1 mm (3.6 in)
1941
53.6 mm (2.1 in)
1942
50.5 mm (2.0 in)
1943
63.7 mm (2.5 in)
1944
47.0 mm (1.9 in)
1945
65.0 mm (2.6 in)
1946
48.0 mm (1.9 in)
1947
112.1 mm (4.4 in)
1948
83.9 mm (3.3 in)
1949
59.2 mm (2.3 in)
1950
63.7 mm (2.5 in)
1951
69.6 mm (2.7 in)
1952
70.9 mm (2.8 in)
1953
66.0 mm (2.6 in)
1954
85.2 mm (3.4 in)
1955
47.7 mm (1.9 in)
1956
44.2 mm (1.7 in)
1957
59.2 mm (2.3 in)
1958
58.2 mm (2.3 in)
1959
68.0 mm (2.7 in)
1960
66.1 mm (2.6 in)
1961
70.9 mm (2.8 in)
1962
60.6 mm (2.4 in)
1963
72.1 mm (2.8 in)
1964
58.9 mm (2.3 in)
1965
54.3 mm (2.1 in)
1966
85.9 mm (3.4 in)
1967
69.3 mm (2.7 in)
1968
67.0 mm (2.6 in)
1969
83.6 mm (3.3 in)
1970
57.1 mm (2.2 in)
1971
57.9 mm (2.3 in)
1972
80.7 mm (3.2 in)
1973
58.9 mm (2.3 in)
1974
66.9 mm (2.6 in)
1975
84.4 mm (3.3 in)
1976
69.9 mm (2.8 in)
1977
58.9 mm (2.3 in)
1978
86.0 mm (3.4 in)
1979
55.8 mm (2.2 in)
1980
59.1 mm (2.3 in)
1981
39.9 mm (1.6 in)
1982
41.9 mm (1.6 in)
1983
57.6 mm (2.3 in)
1984
72.7 mm (2.9 in)
1985
72.2 mm (2.8 in)
1986
74.2 mm (2.9 in)
1987
115.9 mm (4.6 in)
1988
85.6 mm (3.4 in)
1989
41.2 mm (1.6 in)
1990
96.8 mm (3.8 in)
1991
74.6 mm (2.9 in)
1992
53.3 mm (2.1 in)
1993
94.0 mm (3.7 in)
1994
103.1 mm (4.1 in)
1995
53.8 mm (2.1 in)
1996
39.7 mm (1.6 in)
1997
41.4 mm (1.6 in)
1998
82.2 mm (3.2 in)
1999
74.8 mm (2.9 in)
2000
51.1 mm (2.0 in)
2001
54.1 mm (2.1 in)
2002
41.9 mm (1.6 in)
2003
59.7 mm (2.4 in)
2004
76.2 mm (3.0 in)
2005
79.0 mm (3.1 in)
2006
102.9 mm (4.1 in)
Longest dry spell (CDD)
The longest dry spell of the year at Mio Hydro Plt, 1892 to 2006. The record is 42 days in 1995, marked on the chart; the median year is 20 days.
Longest dry spell (CDD) at Mio Hydro Plt by year
Year
Longest dry spell (CDD)
1892
13 days
1893
n/a
1894
n/a
1896
18 days
1897
19 days
1898
21 days
1899
16 days
1900
16 days
1901
19 days
1902
11 days
1903
25 days
1904
15 days
1905
10 days
1906
12 days
1917
19 days
1918
33 days
1919
34 days
1920
18 days
1921
22 days
1922
17 days
1923
15 days
1924
19 days
1925
21 days
1926
16 days
1927
27 days
1928
16 days
1929
26 days
1930
25 days
1931
21 days
1932
17 days
1933
27 days
1934
15 days
1935
13 days
1936
25 days
1937
22 days
1938
21 days
1939
20 days
1940
11 days
1941
14 days
1942
6 days
1943
27 days
1944
23 days
1945
26 days
1946
16 days
1947
23 days
1948
21 days
1949
18 days
1950
12 days
1951
13 days
1952
16 days
1953
19 days
1954
21 days
1955
18 days
1956
15 days
1957
23 days
1958
31 days
1959
15 days
1960
12 days
1961
18 days
1962
22 days
1963
22 days
1964
15 days
1965
14 days
1966
17 days
1967
16 days
1968
17 days
1969
24 days
1970
21 days
1971
20 days
1972
14 days
1973
14 days
1974
15 days
1975
14 days
1976
22 days
1977
22 days
1978
21 days
1979
32 days
1980
21 days
1981
12 days
1982
22 days
1983
24 days
1984
20 days
1985
13 days
1986
23 days
1987
27 days
1988
17 days
1989
24 days
1990
20 days
1991
15 days
1992
14 days
1993
22 days
1994
14 days
1995
42 days
1996
26 days
1997
20 days
1998
23 days
1999
24 days
2000
15 days
2001
26 days
2002
40 days
2003
20 days
2004
33 days
2005
41 days
2006
15 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
87 years with a frost
Across 87 years with a frost, the median last spring frost at Mio Hydro Plt falls on 30 May and the median first autumn frost on 18 September, which leaves a median of 111 days between them.
In 1971 to 2006 the median growing season was 122 days. That is 35 days more than in 1897 to 1942.
Fitted over all years, the growing season changes by +5.5 days per decade at this station.
Frost dates and growing season at Mio Hydro Plt
Measure
Median, all years
Earliest period (1897 to 1942)
Recent period (1971 to 2006)
Recent against earliest
Fitted trend
Last spring frost
30 May
9 June
26 May
14 days earlier
-1.4 days per decade
First autumn frost
18 September
4 September
25 September
21 days later
+4.0 days per decade
Growing days
111 days
87 days
122 days
35 days more
+5.5 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
88 years, 1897 to 2005
A day with at least 40.4 mm (1.6 in) of rain is expected about once in 2 years. A day with at least 84.2 mm (3.3 in) of rain is expected about once in 100 years.
Rainfall return levels at Mio Hydro Plt: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
40.4 mm (1.6 in)
5 years
51.8 mm (2.0 in)
10 years
59.4 mm (2.3 in)
25 years
69.3 mm (2.7 in)
50 years
76.7 mm (3.0 in)
100 years
84.2 mm (3.3 in)
Longer than the 88 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, 88 years of values from 1897 to 2005.
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: 79.5 mm (3.1 in) in 1990; 77.0 mm (3.0 in) in 1947; 75.7 mm (3.0 in) in 1931.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Mio Hydro Plt standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Mio Hydro Plt 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.