Radar & lightning: Latest D.C. area radar shows movement of precipitation and lightning strikes over past two hours. Refresh page to update. Click here or on image to enlarge. Or see radar bigger on our Weather Wall.

Considerable cloud cover held temperatures about 5 degrees below predicted levels, with highs reaching 75-80. But it was plenty humid and that moisture coupled with an incoming disturbance brings a chance of showers and storms overnight. The disturbance scoots out by Saturday night deeming Sunday the pick of the weekend.

Through Tonight: A few showers and possibly the rumble of thunder are possible between roughly 9 p.m. and 3 a.m. overnight (40 percent chance).  The rest of the night is mostly cloudy with just a 20 percent chance of showers.  It’s very mild, with lows 62-67 (suburbs-city). Winds are light from the south.

Tomorrow (Saturday): There’s a small chance of showers in the morning (around a 25 percent chance), with the best rain chances between roughly 2 p.m. and 8 p.m. (60 percent chance).  Some thunder and a few heavier downpours are possible in this window.  It won’t rain the entire time, but keep a close eye on radar if you have outdoor activities planned.  Highs are around 80 and you’ll notice some humidity.  Rainfall totals are highly variable, but average around 0.25-0.5″.

Saturday night and Sunday: Showers and thundershowers are possible Saturday night, but chances decrease from 60 percent in the evening to 20 percent by the pre-dawn hours.  Lows are around 60.  Skies clear Sunday morning with the balance of the day mostly sunny and not as humid, with highs 80-85.

See Camden Walker’s forecast into early next week. And if you haven’t already, join us on Facebook and follow us on Twitter . For related traffic news, check out Dr. Gridlock.

Key Bridge on May 2 (Brian Allen via Flickr)