Warmer today, super-warm tomorrow; storms?
9:25 p.m. Update: Showers moving through this evening are mostly light to moderate rather than moderate to heavy, but don't be deceived by that - there’s a bit of lightning with them nonetheless. So if you hear thunder make sure to head indoors.
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Today: Sun gives way to p.m. clouds. Upper 50s to near 60. | Tonight: Mostly cloudy. Showers possible. 40s to near 50. | Tomorrow: Partly sunny & breezy. Mid-70s to near 80. | A Look Ahead | Get Express Forecast by E-mail
After a fairly nice morning for the Cherry Blossom Ten Mile Run (on the cool side, but warming steadily) and pleasant afternoon weather for those headed to Nationals Park, a few showers associated with an incoming warm front may pepper the region tonight, but nothing too heavy. By Monday, wow, we have a gush of warm air - and instability that could have thunderstorms crackling Monday night into Tuesday morning. Tuesday is cooler again but a new warming trend quickly follows.
Today (Sunday): If you’re out early - maybe a runner or spectator at the Cherry Blossom Ten Miler - early-to-mid morning temperatures rising into and through the 40s are on the cool side even with mostly sunny skies. With a bit of a breeze from the west, afternoon highs should hit the upper 50s to near 60 as a warm front approaches. It’s nice to close in on average highs (low 60s), though skies are likely to become increasingly cloudy during the afternoon with a slight chance of a shower just before sunset. Confidence: Medium-High
Tonight: The warm front brings a 30% chance of showers (areas north of town may be the main target for showers, though hard to say for sure until we see how radar develops this evening). Temperatures may vary widely across the metro area. Some locations well outside the Beltway could bottom in the low 40s. For most of us, mid-40s (closer-in suburbs) to near 50 (downtown) should do it with mostly to partly cloudy skies and a steady breeze from the south. Confidence: Medium
Warmer weather is just after the jump. Keep reading for the forecast through midweek...
Tomorrow (Monday): As strengthening low pressure over the Great Lakes heads into southern Canada, somewhat sunny skies and gusty winds from the south/southwest (gusts to near 35 mph) push highs well above normal for a change - to at least the mid-70s it seems, and possibly near 80 if there’s enough of a westerly (downsloping) component to the wind. We’ll enjoy the warmth, but also have to watch to the west for a possible line of strong to severe storms (forming along a cold front extending south from the low in southern Canada) that may be approaching as we head into evening. Confidence: Medium
Tomorrow night: Showers and storms - some could be strong to severe - are a significant threat (60% chance) during the evening or overnight until the cold front clears the region toward or during the morning. Winds continue gusty, and even more so within any storms, with lows in the low 50s to near 50. Confidence: Low-Medium
The shower and thunderstorm risk could linger into Tuesday morning, though as Ian mentioned yesterday, the cold front responsible for the storm threat has been speeding up, so any showers or storms may exit sooner rather than later. Gusty winds from the west/northwest accompany cooler highs in the 50s with plenty of sun once morning clouds clear out. Mostly clear Tuesday night with calming winds and lows in the upper 30s to low 40s. Confidence: Low-Medium
On Wednesday, partly to mostly sunny skies and a warm flow from the southwest (thanks to high pressure centered to the south/southeast) boost highs back to around 60, perhaps into the 60s. Confidence: Medium
And it looks like we’ll stick with highs in the 60s or higher through the remainder of the week - woohoo!