The Redlands Christmas Parade, scheduled for Saturday evening, has more than 100 floats signed up to kick off the city's holiday season.
"By 2 p.m. we should know if we need to postpone the parade," said city spokesman Carl Baker. "If rain does come and doesn't seem like it's going to stop we'll push the event forward to Dec. 8."
Upland's parade, scheduled for 10 a.m. to 2 p.m. Saturday, will go on, rain or shine, according to parade coordinator Meagan McLees.
"We are very optimistic that the weather will be on its best behavior for the parade," she said.
Local mountain resorts haven't been greatly affected by the weather this season, but operators are hopeful that will change this weekend.
Brent Randall, 25, of San Bernardino said he spends most of his days off at the mountain resorts in the winter.
"I'm still waiting to try out my new snowboard," said Randall. "I'm like a kid in a candy shop when it comes to snow."
Randall added that he was keeping his fingers crossed for lots of snow to fall at all of the resorts.
Snow Summit in Big Bear Lake is temporarily closed until further notice, according to its website, because of the lack of white powder on the slopes.
But Bear Mountain, also in Big Bear Lake, remained open with full services including snowsports lessons, equipment rentals, food services and the Beach Bar, according to its website.
Chairlift 1, which accesses the Expressway, The Gulch and Lower Park runs, is open, and Chairlift 7 is open for beginners.
Snow coverage is good and the depth averages 18 inches.
"There's been some drizzling and dense fog, one Bear Mountain resort employee said Thursday.
Mountain High is Wrightwood is temporarily closed because of the lack of winter weather.
Rainfall in the Inland Empire measured an average of only five-tenths of an inch overnight Wednesday, according to the National Weather Service, but forecasters expect that to change over the weekend.
Strong, constant rainfall is expected to strike the Inland Empire over the weekend, according to the weather service.
The NWS predicts gusty southwest winds along with areas of rain and dense fog.
The combination of gusty winds, wet roads and limited visibility from fog may make travel difficult in the higher elevations at times.
The CHP advises motorists to reduce their speed in inclement weather.
"When the roads are wet and visibility is low, drivers need to slow down," said CHP Inland Division spokesman Mario Lopez. "The rain brings up oil and debris that have been set in the roads, making them slicker to drive on."
When driving on slick surfaces the braking time is longer and accidents happen, Lopez added.