A slow-moving low pressure system will make residents of the Northwest reach for their raincoats and umbrellas each day through the remainder of the week.
Those with outdoor plans should prepare for the wet weather and have a backup plan in the case that heavy rain forces a washout.
People should also be on the lookout for flooding as this system drops several inches of rain across the region; the heaviest of which will be falling along the coasts of Washington and Oregon.
Locations most susceptible to flooding include low-lying and poor drainage areas.
Rain will be the primary weather seen from this system; however, snow will be the story over the Cascades, northern Rockies and even portions of the Sierras.
This can cause difficult travel through the mountains as snow levels fluctuate between 3,000 and 6,000 feet through Friday.
Although the steadiest rain will focus over the Northwest, moisture from this system is expected to slowly shift southward by the end of the week.
This means rainfall for areas of California and Nevada currently in an extreme drought.
Even though rain will not be as steady over these areas as farther north, it could result in the first measurable rainfall for cities such as Los Angeles, San Diego, Sacramento and Fresno, since early April.
In addition to the wet weather, winds will kick up over the interior Southwest on Friday and into Saturday as the storm moves onshore.
Winds can exceed 50 mph across the region, and combined with the already dry conditions, result in a heightened risk of wildfires.
Strong winds can lead to dust storms, reducing visibility and making for difficult travel for several hours.
Drier weather looks to make a brief return across the West Coast heading into the weekend; however, another system may bring rain to the Northwest once again by the end of Saturday.
Temperatures will take a tumble across the northeastern United States during the first half of this week.
Beneficial rain will douse California late this week, with the potential for some rain to reach southern portions of the state.
Following a chilly World Series opener during Tuesday evening, a chilly rain may threaten play for Game 2 in Cleveland on Wednesday evening.
A strengthening tropical cyclone will unleash heavy rain and strong winds on areas from western Myanmar to northeast India and Bangladesh this week.
Cool air that has been in place across the United Kingdom over the past week will be replaced with milder air by the middle of the week.
Flooding downpours and thunderstorms will target a part of the central United States at midweek.
Strong coastal storm with winds exceeding 100 mph over the ocean; 82-mph wind gust at south end of Chesapeake Bay Bridge Tunnel. Bethany Beach Delaware being evacuated as waves came over the dunes. Heavy snow in NC mountains. Mt. Pisgah - 11 inches; Mt. Mitchell - 6 inches.
Caribou, ME (1990)
19 consecutive days of measurable precipitation.
Ashford, CT (1758)
"The 25th day of Oct., 1758, a very stormy day of snow, the 26th snowed all day, storm held from Friday night until Saturday morning." by Ebeneser Byles, Town Clerk of Ashford.