Forecast: Fall to Arrive, Summer Warmth Holds On

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EXPRESS FORECAST

Today: Partly sunny. Near 80. | Tonight: Becoming cloudy, 40% chance of showers. 60-65. | Tomorrow: Mostly cloudy, 50% chance of showers. Upper 70s. | A Look Ahead

FORECAST IN DETAIL

Autumn arrives tomorrow afternoon (at 5:18 p.m.), but fall weather will wait to show up until later in the week. The next four days will be on the warm side with even a little humidity around mid-week. A few showers will also be around and about mainly tomorrow, Thursday and perhaps Sunday. Chances are good we'll have delightfully dry weather today, Wednesday, and Friday into the beginning of the weekend.

Today (Monday): For the third straight day, we'll have beautiful conditions. The mercury will probably rise a couple degrees higher than over the weekend (when the high was 77 both days), nearing 80. We'll have a light breeze from the southeast at 5-10 mph. Confidence: High

Tonight: Skies will gradually become mostly cloudy as a weather system to the west continues to make slow progress towards the region. A few showers are possible (40% chance), mainly after midnight. Confidence: Medium-High

Keep reading for the forecast through the work week

Tomorrow (Tuesday): Some scattered showers are possible (50% chance), particularly in the afternoon, as a weakening disturbance moves through the region. Skies will be on the cloudy side with highs in the upper 70s. Winds will remain light and out of the southeast, so the air will be a little sticky. Confidence: Medium

Tomorrow Night: A few showers are possible (40% chance) early, followed by partial clearing. Lows will be mild, dropping only to around 60 in the cooler suburbs to the mid-60s downtown. Confidence: Medium

A LOOK AHEAD

Weak high pressure builds into the region Wednesday while a weak weather system hangs around just to our east. The result will probably be a mix of clouds and sun with any shower activity mainly east of the Chesapeake Bay. Highs should climb into the rather summery low-to-mid 80s. Mild overnight, with lows 60-65. Confidence: Medium-High

Another very mild day Thursday before a blast of more fall-like air arrives at night when a cold front blows through. Under partly sunny skies and with a wind from the south, highs will set their sights on the mid-80s. Late in the afternoon and into the evening, there's a 30% chance of showers and thunderstorms. Gradual clearing overnight, with lows from the mid-50s in the suburbs to near 60 downtown. Confidence: Medium-High

More fall-like air greets us briefly Friday. Friday should be a pleasantly cool and breezy day, with highs 70-75. Winds from the north will likely blow at 10-20 mph. Clear and cool overnight, with lows from near 50 in the cooler suburbs to the upper 50s downtown. Confidence: Medium

It starts to warm back up Saturday, as our cool northerly wind subsides. Highs should reach the mid-to-upper 70s under partly to mostly sunny skies. Confidence: Medium

Clouds increase Saturday night into Sunday. Some showers are possible starting early Sunday and then throughout the day. Temperatures will probably begin the day near 60 and climb up into the low-to-mid 70s under cloudy skies. Confidence: Low-Medium