Cincinnati Abbe Wsmo Weather Records (USW00093890)

The fitted trend in annual mean temperature here over 1916 to 1982 is 0.01 C (-0.09 to 0.10) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.01 F (-0.17 to 0.18) per decade. The slope is a straight line fitted to 67 complete years; the brackets give its 95 percent interval.

Across 67 years with a frost, the median last spring frost at Cincinnati Abbe Wsmo falls on 14 April and the median first autumn frost on 26 October, which leaves a median of 194 days between them.

In 1953 to 1982 the median growing season was 196 days. That is 8 days more than in 1916 to 1945.

Fitted over all years, the growing season changes by +1.3 days per decade at this station.

A day with at least 56.7 mm (2.2 in) of rain is expected about once in 2 years. A day with at least 118.9 mm (4.7 in) of rain is expected about once in 100 years.

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 67 years of values from 1916 to 1982.

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: 117.6 mm (4.6 in) in 1964; 108.7 mm (4.3 in) in 1959; 103.4 mm (4.1 in) in 1926.

One change was suspected in the annual mean temperature of Cincinnati Abbe Wsmo, at 1943. Each is measured against neighbouring stations.

• Relative to 5 neighbouring stations, the station's annual mean temperature from 1943 ran 0.2 C (0.3 F) higher than in the years before (likely change).