An electronic timer system includes a counter-based time generator for continuously generating raw base time, and a translator for translating between raw base time and local precise time. The counter-based time generator is driven by an oscillator. The timer system further includes a temperature sensor placed in the proximity of the oscillator or a crystal used by the oscillator, and a look-up control table holding temperature values associated with corresponding control values representative of the configurable parameter value A. The look-up control table is generated when the timer system is synchronized with a synchronization source so that the temperature and control values are characteristic of the operation of the timer system in synchronization. The timer system is also configured for reading, when no synchronization source is available, a temperature value from the temperature sensor, and for extracting, based on the temperature value, a control value from the look-up control table corresponding to a suitable (quantized) representation of the temperature value. The timer system is then able to configure the parameter variable A in accordance with the extracted control value.