Mother Nature just won't leave the Sierra Nevada alone.

After a winter and early spring marked by record snowfall, the Lake Tahoe area saw unseasonably cold and stormy weather over the weekend.

"Temperatures in the 70s are typical at this time of year, and we're seeing temperatures in the 40s and 50s," said Evan LaGuardia, a meteorologist with the National Weather Service office in Reno."That's 25 degrees below normal in some cases."

A low pressure system accompanied by a cold front that swooped into Northern California brought the chilly conditions, and LaGuardia expects that by Monday morning elevations above 7,000 feet will receive up to a foot of snow.

"This type of snow accumulation happens about every 5 to 10 years," he said. "It's not extremely rare, but it is rare. The last time we saw anything like this was June 6, 2011, when four inches of snow was recorded at Daggett Pass (Nevada)."

The stormy conditions are churning up Lake Tahoe, and waves five feet to six feet broke along the eastern shore from Incline Village to Emerald Bay over the weekend and last week as southwest winds whipped across the water.

"It's not uncommon to have four to five footers on the lake," said Luke Berghuis, a petty officer first class with the Coast Guard in Tahoe City. "But wow, a whole week of waves this big is unusual. And because the lake is so full, the waves look especially big."

Tahoe resident and professional photographer Christi Virdee was at the lake in Incline Village late Saturday afternoon.

"The lake was unreal last night. The waves were just huge," said Virdee. "I wanted to get a great shot. I was out there in my Hunter boots standing on a rock. And then I suddenly got soaked by a huge wave. It got me right in the face."

The Bay Area was seeing its share of unseasonal wet June weather Sunday afternoon, as storm clouds took over the morning's blue skies.

The storms materialized along a line that stretched from roughly Santa Rosa to Calistoga and began moving southwards towards Solano County from there, according to National Weather Service meteorologist Will Pi said.

The most heavily impacted areas can expect sustained winds of up to 25 mph and gusts up to 40 mph, in addition to more thunder, lightening, rain and maybe hail.

Rain totals of up to a quarter of an inch are also expected in the hardest hit areas.

A few funnel clouds also made appearances in Northern California, as locals reported seeing the weather phenomenon in Lincoln and Plumas Lake. The storms are expected to continue into Sunday night.

Bay City News contributed to this report.