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.
Warmth will be the theme this weekend in Chicago, as abundant sunshine hangs around the city.
A developing cyclone could threaten areas from the Arabian Peninsula to northwestern India next week.
Rain will continue to soak and heighten concerns for flooding across southeastern Europe through Saturday.
A rain-free weekend is in store for the Washington, D.C. area, ahead of a surge of warmth for the middle part of next week.
A rain-free weekend is in store for the Philadelphia area, ahead of a surge of warmth for the middle part of next week.
Much of the weekend will be free of rain for the Boston area, ahead of a surge of warmth for the middle part of next week.
(Oct. 24-25) 33" snow in 2 days at Mesa Lake Reservoir.
Tornado sweeps through Sunset Crater National monument. 600-700 trees destroyed. The twister was 150 yards wide at times.
New England (1785)
Four day rains put Merrimac River in NH and MA to greatest flood height ever known -- extensive bridge and mill damage.