Forecast: Spring-like 70s, PM shower chances through Thursday

EXPRESS FORECAST

Today: Partly sunny. Chance of PM showers. 73-79. | Tonight: Evening shower chance, then mostly cloudy. 50-55. | Tomorrow: Mostly cloudy, chance of PM showers. 71-76. | Get Express Forecast by E-mail


FORECAST IN DETAIL


Today (Monday): We should have a good deal of sunshine to start the day and refreshing 60s. But, with cold air at high altitudes, the sun will help to destabilize the atmosphere and clouds will build. I expect we’ll see some scattered showers and thundershowers (40-50% chance) develop, especially as a little wave in the atmosphere cycles into the region during the afternoon. Don’t be surprised - given the cold air aloft - to see some small hail in a few thundershowers. Highs are in the mid-70s. Winds from the northwest at 10-15 mph. Confidence: Medium-High

Tonight: Showers and thundershowers linger into the evening, but with the loss of daylight, they gradually diminish. Overnight, it’s partly to mostly cloudy with lows 52-57 (suburbs-city).. Confidence: Medium-High

For related traffic news, check out Dr. Gridlock. Keep reading for the forecast through the weekend...

Tomorrow (Tuesday): It’s very similar to Monday but the airmass is slightly cooler and I think we’ll have fewer showers (20-30% chance of rain). Any showers that develop are most likely during the afternoon. Highs range from the low-to-mid 70s with variably cloudy skies. Confidence: Medium

Tomorrow night: A very slight chance of evening showers with partly to mostly cloudy skies overnight. Clouds may interfere with the transit of Venus - but it’s a tough call at this point. We’ll keep you posted. Lows range from 52-57 (suburbs-city) Confidence: Medium-High

A LOOK AHEAD

Wednesday and Thursday closely resemble Monday and Tuesday with more sun favored in the morning and then clouds and scattered showers popping up in the afternoon and evening (30% chance or so of rain). Temperatures remain pleasant, with highs in the mid-70s, and overnight lows in the 50s. Confidence: Medium

Summer weather lovers will appreciate the forecast for Friday through the weekend: showers chances evaporate and we start a warming trend. All three days are partly to mostly sunny, with highs near 80 on Friday, 85 on Saturday, and perhaps 90 by Sunday. Overnight lows moderate from the 52-59 Friday morning to 54-63 Saturday morning, to 57-66 by Sunday morning (coolest readings in the north and west suburbs). Confidence: Medium

Jason is currently the Washington Post’s weather editor. A native Washingtonian, Jason has been a weather enthusiast since age 10.

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