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.
The tropical Atlantic has quieted down, but that may change in the coming days in the southwestern Gulf of Mexico's Bay of Campeche.
A change in the weather pattern will signal warmer, more summerlike conditions across the East Coast to bring in the new month.
After an earthquake hit in the area, a volcanic eruption occurred Friday in Iceland, resulting in a temporary no-fly order.
Labor Day weekend traditionally marks the unofficial end to summer, but the weather has another idea in mind around Harrisburg with a prolonged stretch of summer warmth underway.
Showers and thunderstorms will continue to threaten to interfere with outdoor plans around Pittsburgh through the remainder of this Labor Day holiday weekend.
An outbreak of severe weather, including a few tornadoes, threatens to ruin the holiday weekend across the North Central U.S. states.
Three inches of snow fell in parts of the state; record lows were set in 31 northeastern U.S. cities and towns.
West Virginia (1989)
Lightning sets numerous house and trailer fires. Firefighters could not keep up with all the fires that were burning.
Incredible "snow" hurricane whitened parts of the Catskills.