Deviation from 1961–1990 average, Czech Republic
Circular diagrams above represent mean annual and seasonal air temperature deviations from annual and seasonal average in the period 1961-1990. Dark red indicates significantly above-average temperature, dark blue shows below-average values. Annual mean is represented by the color of the circle center, seasonal means are represented by the wedge-like sectors as shown in the legend on the right. The color legend is shown separately for seasonal and annual means – the deviations are higher in case of the seasonal means.
Absolutely coldest was the year 1829 (mean: 4.4°C, deviation: -2.9°C), warmest being the year 2018 (mean: 10.0°C, deviation +2.7°C). The absolutely coldest season was the winter of 1830 (-8.6°C) and warmest summer of 2018 and 2019 (+19.8°C). Seasons with highest positive and negative deviations are winter 2007 (mean: 2.9°C, deviation: +4.6°C) and winter 1830 (mean: -8.6°C, deviation: -6.9°C) respectively.
In some years, all seasons were above-average (for example all the years 2014-2020), but there were also years with all seasons below the 1961-1990 average (for example 1805, most recently 1978).