Independence Day Climatology





Top 10 Coldest July 4th Highs
1. 1882, 1922: 69
2. 1924, 1967, 1978, 2008: 71
3. 1909, 1927, 1972, 1979, 2016: 72
4. 1920: 73
5. 1937, 1989: 74
6. 1892, 1910, 1940, 1941, 1960, 1997, 2009: 76
7. 1917, 1964, 1968, 1970, 1976, 2013: 77
8. 1891, 1961, 2014: 78
9. 1889, 1933, 1996, 2001, 2015: 79
10. 1898, 1906, 1926, 1938, 1962, 1992; 80

Top 10 Warmest July 4th Highs
1. 1911: 104
2. 1897: 102
3. 2012: 100
4. 1919: 97
5. 1900, 1921, 1949, 2002: 96
6. 1990, 1999: 95
7. 1903, 1948: 94
8. 1881, 1883, 1899, 1918, 1958, 1988, 2018: 93
9. 1913, 1993, 2003: 92
10. 1880, 1901, 1902, 1931, 1944, 1974, 2010: 91

Top 10 Coldest July 4th Lows
1. 1968: 47
2. 1963: 49
3. 1996: 50
4. 1986: 51
5. 1927, 1940: 52
6. 1960, 1961, 1965, 1972: 53
7. 1892, 1909, 1924, 1930, 1979: 54
8. 1895, 1907: 55
9. 1891, 1915, 1922, 1976, 1992: 56
10. 1953, 1964, 1967, 1988, 2014: 57

Top 10 Warmest July 4th Lows
1. 1911: 79
2. 1897, 1900, 1999: 75
3. 1879, 1921: 74
4. 1883, 1902, 2012, 2018: 73
5. 1899, 1919, 1991, 2002, 2004; 72
6. 1884, 1903, 1913, 1943, 1974, 2005, 2013: 71
7. 1888, 1896, 1901, 1980, 2003, 2011: 70
8. 1878, 1905, 1908, 1935, 1949, 1957, 1966, 1983, 1987, 2000, 2006: 69
9. 1881, 1887, 1894, 1936, 1954, 1973, 1984, 1989, 1990, 1993, 1995: 68
10. 1912, 1928, 1934, 1939, 1952, 1956, 1969, 1975, 1998, 2017: 67

Top 10 Wettest July 4ths
1. 1984: 1.38″
2. 1935: 1.04″
3. 1915: 0.86″
4. 1932: 0.84″
5. 1957: 0.66″
6. 2008: 0.61″
7. 1939: 0.60″
8. 2003: 0.59″
9. 1926: 0.58″
10. 2006: 0.56″




Summer of Rain 2015

This summer has been wet… very wet. Rain has fallen on far more days than not, and cloud cover has hung thick and heavy in what are historically much sunnier months. To top it all off, temperatures have been somewhat below normal.

How wet has summer 2015 been up through today? Meteorological summer runs June 1st-August 31st, and today makes the midpoint of that period, so I thought it would be a good time to check in and answer that question.

Here are the top 10 wettest summers through yesterday.
1. 1958: 12.54″
2. 2008: 11.68″
3. 1990: 10.93″
4. 2015: 10.66″
5. 1949: 10.40″
6. 1973: 10.23″
7. 1917: 10.06″
8. 1928: 10.02″
9. 1937: 9.75″
10. 1969: 9.38″

So 2015 is running the 4th wettest. It looks to be dry the next few days before more thunderstorms and rain return, so 2015′s position may end up rising.

What are the wettest full summers of all time? A few of the above years went on to be in the top 10, but not all.
1. 1958: 22.02″
2. 1979: 20.92″
3. 1995: 19.85″
4. 2003: 19.39″
5. 1969: 19.09″
6. 1915: 18.92″
7. 1992: 18.44″
8. 1973: 17.81″
9. 1989: 17.45″
10. 1949: 16.54″

Summer 2015 needs about 6″ more to reach into the top 10 wettest summers, which at the current pace is more than possible.



Independence Day Columbus Climatology



In honor of the 4th, here are Independence Day’s extreme events.

Normals
High: 85
Low: 65
Mean: 75
Precipitation: 0.15″

# of July 4ths Where the Maximum was…
100 or Above: 3
90 or Above: 34
80 and Above: 104
79 and Below: 31
69 and Below: 2

# of July 4ths Where the Minimum was…
70 or Above: 26
60 or Above: 95
59 or Below: 40
49 or Below: 2

Top 5 Warmest Highs
1. 1911: 104
2. 1897: 102
3. 2012: 100
4. 1919: 97
5. 1900, 1921, 1949, 2002: 96

Top 5 Coldest Highs
1. 1882, 1922: 69
2. 1924, 1967, 1978, 2008: 71
3. 1909, 1927, 1972, 1979: 72
4. 1920: 73
5. 1937, 1989: 74

Top 5 Warmest Lows
1. 1911: 79
2. 1897, 1900, 1999: 75
3. 1879, 1921: 74
4. 1883, 1902, 2012: 73
5. 1899, 1919, 1991, 2004: 72

Top 5 Coldest Lows
1. 1968: 47
2. 1963: 49
3. 1996: 50
4. 1986: 51
5. 1927, 1940: 52

# of July 4ths where Precipitation was…
0: 65
Trace: 18
0.01-0.24: 32
0.25-0.49: 8
0.50-0.74: 8
0.75-0.99: 2
1.00 and Above: 2

Top 10 Wettest
1. 1984: 1.38″
2. 1935: 1.04″
3. 1915: 0.86″
4. 1932: 0.84″
5. 1957: 0.66″
6. 2008: 0.61″
7. 1939: 0.60″
8. 2003: 0.59″
9. 1926: 0.58″
10. 2006: 0.56″

Ohio’s most infamous July 4th weather event, occurred in 1969. Severe thunderstorms developed over southeastern Michigan and moved southeastward into the Ohio lakeshore communities around 7:30PM on July 4th. Every lakeshore community from Toledo to Cleveland was affected, as well as areas further inland. The storms continuously trained over the same areas from Lucas to Wayne counties for several hours, dropping torrential rains, tornadoes, high winds, hail and lightning. Rainfall in a 100-mile stretch from just southeast of Toledo into Wayne County totaled 6″-14″. These rains caused record local flooding. All told, the storms of July 4th-5th, 1969 caused $65 million in damage, damaged or destroyed 10,000 homes, 7,000 cars, 104 businesses, 300 mobile homes and more than 700 boats. 41 people were killed and 559 were injured, mostly from flooding. This was the 3rd most damaging flood in Ohio history, behind January 1959 and March 1913. Columbus was too far south to see any of the storms and received just 0.03″ of rain for the period.