January 2025 – Central England

The mean temperature in January 2025 in central England was 3.4°C, which made the anomaly -1.3°C lower than the 1991-2020 LTALTA Long Term Average. This is usually defined as a 30 year period by the WMO.. Nothing too remarkable, but the lowest monthly anomaly in three years. What is remarkable, is that mean temperatures in January, have flatlined in the last 30 years. A linear trend since 1878 through to 2025 shows that Januaries have been slowly warming at the rate of 0.09°C per decade over that time.