Around this time of year, the nights lengthen, cool air begins to pool over Canada, and the long shadow of winter looms over much of the country.
High temperatures the first part of this week reached record levels, with some places soaring well into the 90s and lower 100s clear to the coast. Places such as San Francisco had their warmest temperatures in over a year, and some spots even reached near 110 degrees.
As the strong high pressure responsible for this extreme heat weakens and pushes off to the south, cooler air on a westerly wind will continue to filter in from the Pacific, allowing temperatures to become gradually cooler. This cooling trend is expected to continue.
A storm system developing well offshore will start to approach the coast of California this weekend.
Clouds will start to increase across the northern and central parts of the state later Sunday, before filtering into the rest of the state early next week. A few showers are even possible near the coast.
Temperatures across central and Southern California will drop to as much as 5-10 degrees below normal by Monday and Tuesday, especially from San Francisco southward to Los Angeles and San Diego.
The cool and increasingly showery weather should last into at least the middle part of next week as the low drifts over the state.
Stay with AccuWeather.com for the latest on this cooldown and the potentially showery weather ahead for next week.
Cooler weather and rain showers will be the resounding theme for Seattle this week.
Remnants of thunderstorms on the High Plains from Wednesday will re-fire farther east over the Mississippi Valley Thursday into Thursday night.
Building code changes in the wake of Hurricane Sandy are raising rebuilding costs for homeowners and other property owners while still attempting to mitigate future damages.
A cold storm will bring rain and snow to California Friday and Saturday, but heat returns again next week.
Following a cooldown at midweek for Cleveland, temperatures will remain below normal through the weekend.
Volcano Springs, CA (1898)
118 degrees -- highest in U.S. in April.
Mt. Pocono, PA (1983)
8" of snow fell overnight into the morning of the 25th.
Toronto, Ont (1990)
Thirty-three temperature difference at noon across the area. Downtown was 84, but on Toronto Island, just 12 miles away, it was only 51 degrees.