Rain is expected to move across the region Wednesday, with 5 to 10 millimetres forecast before cooler temperatures arrive later in the week, according to CTV News meteorologist Julie Atchison. Showers are possible this morning, with steadier rainfall expected through the afternoon as a cold front moves through southern Ontario. PHOTO GALLERY: October Viewer Photos Atchison says some areas could see heavier pockets of rain, with totals reaching about 15 millimetres near Chatham-Kent. Temperatures will remain mild Wednesday, reaching a high of 19 C, before dropping to 13 C Thursday under mainly cloudy skies. A 40 per cent chance of showers is in the forecast Friday, with the risk lingering into Saturday. PHOTO GALLERY: October Dogs of the Day Another cold front is expected to bring a further cooldown, with temperatures dropping to 9 C Sunday and Monday, closer to seasonal norms. Atchison advises residents to bring an umbrella as showers are expected to continue into Wednesday evening.