Schallstadt-Mengen Weather Records (GME00128278)

The annual mean temperature here has risen by 0.4 C (0.2 to 0.5) per decade over 1947 to 2004. In Fahrenheit: 0.6 F (0.4 to 0.8) per decade. The slope is a straight line fitted to 58 complete years; the brackets give its 95 percent interval.

Across 58 years with a frost, the median last spring frost at Schallstadt-Mengen falls on 16 April and the median first autumn frost on 23 October, which leaves a median of 191 days between them.

Fitted over all years, the growing season changes by +7.9 days per decade at this station.

A day with at least 37.7 mm (1.5 in) of rain is expected about once in 2 years. A day with at least 80.7 mm (3.2 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, 69 years of values from 1947 to 2023.

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: 78.0 mm (3.1 in) in 1999; 64.2 mm (2.5 in) in 1958; 63.5 mm (2.5 in) in 1973.

2 changes were suspected in the annual mean temperature of Schallstadt-Mengen, at 1964 and 1977. Each is measured against neighbouring stations.

• Relative to 5 neighbouring stations, the station's annual mean temperature from 1964 ran 0.3 C (0.5 F) lower than in the years before (likely change).
• Relative to 5 neighbouring stations, the station's annual mean temperature from 1977 ran 0.4 C (0.7 F) higher than in the years before (likely change).