The MeteoSeu observatory, located at the Fire Station Park in La Seu d'Urgell, registered -9.9ºC, the third lowest minimum since the station opened in December 2020. This figure has only been surpassed by the -11.4ºC records achieved on January 6 and 8, 2021, and the -10.2ºC on January 16, 2022. In the Bellestar station, within the same region, the minimum was -8.9ºC.

The most extreme temperatures in the Pyrenean valleys were concentrated in Cerdanya, where the Das aerodrome reached -13.6ºC and Bellver de Cerdanya hit -13ºC. Other notable points included Puigcerdà (-10.6ºC), Pont de Suert (-11.2ºC), and Vielha (-10.3ºC). In the high mountains, the minimums were even more severe, with -16.2ºC at Port de la Bonaigua and -16.1ºC at Tosa d'Alp.

This cold snap, resulting from the thermal inversion concentrating polar air in the valleys and hollows, was not limited to the Alt Pirineu. Frost affected the entire Pre-Pyrenees (with -9.7ºC in Guixers and -7.4ºC in Girona) and even the coast.

Coastal cities like Barcelona and Tarragona also recorded sub-zero temperatures. The Observatori Fabra in Barcelona marked -1.6ºC, the lowest minimum since 2018, while Tarragona reached -0.5ºC. Other coastal municipalities with frost included Castell-Platja d'Aro (-3.3ºC) and Cunit (-2.5ºC).