Linköping tends to be slightly cooler in summer than nearby areas in the Mälar valley, but still was the weather station in Sweden among the officially listed for monthly statistics, that until 2018 had come the closest to a subtropical month, with July 1914 having a mean temperature of 21.8 °C, with the subtropical border being at 22 °C for the warmest month.

Normally summer highs average in the low 20s and winter temperatures commonly hover just above the freezing point during the day, then falls below it at night.