July in Lillestrøm averages a daily high of 22.4°C with nights around 11.5°C. Expect roughly 12.4 wet days totalling 80.1mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Lillestrøm is June–August.
Based on SKEDSMO HELLERUD, NO (4.6km), 1995–2024. 12 years of July data.