April in Gresham averages a daily high of 16.3°C with nights around 5.8°C. Expect roughly 16.6 wet days totalling 85.5mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Gresham is June–September.
Based on PORTLAND TROUTDALE AIRPORT, OR US (6.1km), 1995–2024. 25 years of April data.