Forecast: 90s return in typical August fashion
Today: Partly sunny & humid. 30-40% chance of showers/storms. Low-to-mid 90s. | Tonight: 30-40% chance of evening showers/storms. 70s. | Tomorrow: Partly sunny & humid. 50-60% chance of mainly p.m. storms. Mid-to-upper 90s. | A Look Ahead | Get Express Forecast by E-mail
FORECAST IN DETAIL
I remember thinking last summer -- during a comfortably warm, but not-too-hot-and-humid June and July -- what if every Washington summer was as nice as that one had been? And then came August. There's a reason August in D.C. has a bad rep. Even in overall cooler-than-average summers like last year's, August still seems to bring the steam (Aug. 2009 finished 2.4 degrees above normal). Despite the cooler first few days of this August, the next few days bring back typical August heat and humidity.
Today (Wednesday): Heat and humidity is back today, with partly sunny skies and highs likely climbing to the low 90s, maybe some mid-90s. A few showers or thunderstorms are possible (30-40% chance for any given location). Most likely times for precipitation appear to be in the early-to-mid morning (thunder not likely) and then again in the late afternoon into evening. Confidence: Medium
Most likely timing: 5 p.m. to 11 p.m
Tonight: So many muggy nights this summer and it looks like quite a few left to go, including tonight. Shower/storm chances remain around 30-40% through evening before diminishing overnight. Humidity stays high, and so do low temperatures: low-to-mid 70s in the suburbs and upper 70s downtown, under partly cloudy skies. Confidence: Medium
Keep reading for the forecast through the weekend...
Tomorrow (Thursday): Often we get our warmest days with breezes from the southwest ahead of an approaching cold front. That's the situation we have for tomorrow with highs reaching for the mid-to-upper 90s, high humidity and a 50-60% chance of showers and possibly strong thunderstorms -- primarily from mid-afternoon through mid-evening. Confidence: Medium
Tomorrow Night: The way the timing looks now, the cold front should be past and moving east/southeast away from the area by late evening or around midnight, taking the shower and storm chances with it. In the front's wake, the overnight should bring clearing skies and lows in the low-to-mid 70s. Confidence: Medium
Friday shapes up to be a pretty nice one, especially compared to Thursday. Yes, we're still plenty warm with highs probably in the low 90s. But lower humidity and partly to mostly sunny skies should make for one of the more pleasant days we've seen this summer. Alternate scenario?... there is an outside chance (20%) the front hangs around close enough to trigger an isolated afternoon shower. Confidence: Medium-High
Odds are that Friday night remains rain-free. But, depending on how close the front is and whether low pressure develops along it, there's a small chance (20%) we could see isolated to scattered showers. Confidence: Low-Medium
Conflicting model information makes the weekend forecast kind of tricky in terms of temperatures. Best guess? Highs in the mid-80s to near 90 (though low 90s aren't out of the question if the warmer model is on to something) and morning lows in the mid-60s to low 70s. Humidity should be moderate and rain chances fairly slim with partly to mostly sunny skies. Confidence: Medium
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