- Kanto and Koshinetsu (Wednesday 11 a.m) Wed. Thu. Ibaraki Northern 30% 18C 30% 16C/ 23C Southern 30% 19C 30% 18C/ 25C Tochigi Northern 40% 25C 40% 18C/ 26C Southern 30% 27C 30% 19C/ 25C Gunma Northern 40% 28C 30% 17C/ 25C Southern 40% 29C 30% 20C/ 27C Saitama Southern 20% 28C 10% 21C/ 25C Northern 20% 28C 10% 20C/ 29C Chichibu 20% 27C 10% 18C/ 27C Tokyo Tokyo 20% 29C 10% 23C/ 27C Ogasawara ...www.yomiuri.co.jp/weather_e/kanto.htm