On January 13 and 14, 2024 my weather station located in Didsbury, Alberta within the Rosebud Creek valley, Valarosa Crossing neighbourhood, recorded the lowest air temperatures of -40° Celsius. This has been the lowest ever recorded by my weather station since installation back in August 2012. Previous record was -39° Celsius back on February 7, 2021.
The weather station has struggled to transmit data during these extreme cold hours in darkness. The backup lithium batteries, that keep the system running when the solar panels cannot power it, are only a year and half old, but maybe the solar panel batteries have lost some of their power and therefore cause the backup batteries to be used more. New batteries will be installed soon.