Ponferrada Weather Records (SPE00120233)

The annual mean temperature here has risen by 0.2 C (0.2 to 0.3) per decade over 1951 to 2025. In Fahrenheit: 0.4 F (0.3 to 0.5) per decade. The slope is a straight line fitted to 75 complete years; the brackets give its 95 percent interval.

Across 74 years with a frost, the median last spring frost at Ponferrada falls on 25 March and the median first autumn frost on 17 November, which leaves a median of 234 days between them.

In 1996 to 2025 the median growing season was 244 days. That is 19 days more than in 1951 to 1980.

Fitted over all years, the growing season changes by +1.9 days per decade at this station.

A day with at least 37.1 mm (1.5 in) of rain is expected about once in 2 years. A day with at least 78.7 mm (3.1 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, 51 years of values from 1951 to 2025.

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: 92.2 mm (3.6 in) in 1955; 63.6 mm (2.5 in) in 1999; 63.0 mm (2.5 in) in 2017.

3 changes were suspected in the annual mean temperature of Ponferrada, at 1958, 1981 and 2007. Each is measured against neighbouring stations.

• Relative to 5 neighbouring stations, the station's annual mean temperature from 1958 ran 0.4 C (0.7 F) lower than in the years before (likely change).
• Relative to 5 neighbouring stations, the station's annual mean temperature from 1981 ran 0.2 C (0.3 F) lower than in the years before (likely change).
• Relative to 5 neighbouring stations, the station's annual mean temperature from 2007 ran 0.2 C (0.4 F) higher than in the years before (possible change).