The greater Tokyo area will be seeing overcast skies for much of the week, with no showers in the forecast.

Daytime temperatures will be unseasonably warm, mainly in the low to mid-teens °C (the upper 50s/lower 60s°F). Evening lows will be cool, in the mid-single digits °C (upper 30s°F).

What clothes to pack for Tokyo in February?
・Pack for cold temperatures.
・Long-sleeved shirts and coat with hat or muffler; jeans; warm socks and comfortable sneakers or walking shoes are recommended.

Japan nationwide
Looking at the weather forecast for the rest of Japan, most areas will be seeing overcast skies and cold winter temperatures.

Northern Japan
Hokkaido and the north country are expected to see cloudy skies and flurries throughout the week. Daytime highs will be around freezing. Evening temperatures will be below freezing.

Central Japan
The greater Osaka and Kyoto area is expected to see partly cloudy skies through the week, with rain Saturday. Temperatures will be cool for much of the week, warming from Wednesday with highs in the mid-teens °C and lows in the upper single digits °C.

Okinawa
As for Okinawa, expect cloudy skies for much of the week in Naha with showers Monday. Daily highs are expected to be around the low 20s℃.

No tropical storms are currently in the forecast for Japan.

Details on storms can be found on the Japan Meteorological Agency website.

Check the links below for more on upcoming fun events and festivals!

・Latest Typhoons/Tropical Cyclone Information: http://www.jma.go.jp/en/typh/
・Latest Earthquake Information: http://www.jma.go.jp/en/quake/

Source for forecast and images: Japan Meteorological Agency website / http://www.jma.go.jp/jma/indexe.html