Temperatures will get cooler over the weekend as high clouds block the sun, and breezy tradewinds and windward showers decrease, National Weather Service forecasters said.

High temperatures are expected to stay in the 70s and lows will be in the 60s, dropping to the 50s in some areas through the beginning of next week.

Another weather system could move over the eastern end of the state Sunday, bringing showers and possibly snow to the Big Island summits.

Windward and mauka showers are expected to continue through Thursday night, but some partial clearing is expected this weekend. Some of the showers may blow over to leeward areas. Most of the rain will affect the Big Island and Maui, forecasters said.

Rains are not expected to be as heavy as Thursday night, which saw about an inch of rain on windward slopes of Oahu and Kauai and more than 2 inches in some areas of Maui County and the Big island.

The brisk tradewinds are expected to decrease by Sunday, but could reach warning levels on the Big Island summits Sunday and Monday.

Forecasters say those planning to visit the snow on the summit should go before Sunday, or after the winds die down.

The forecast for Honolulu and south shores of Oahu calls for mostly to partly sunny skies, cool north to northeast winds blowing at 10 to 15 mph with gusts to 30 mph Thursday.

Low temperatures in the 60s Friday night, could drop in to the 50s in some areas.

“Generally you will see temperatures in the lower 60s, but I can’t rule out temperatures in the upper 50s, it’s possible,” said Derek Wroe, a meteorologist with the Honolulu office of the National Weather Service. “The winds will be down quite a bit from where it is right now.”

Wroe said the cool weather and northerly winds could stick around through much of next week.