January in Lillestrøm averages a daily high of -1.5°C with nights around -7.8°C. Expect roughly 11.3 wet days totalling 63.1mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Lillestrøm is June–August.
Based on SKEDSMO HELLERUD, NO (4.6km), 1995–2024. 11 years of January data.