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Washington DC weather for July 18: another sunny, pleasant summer day

Brian's exclusive forecast for Washington DC:

Today: Sunny and warm. A bit more humid with a high in the low to mid 80s.

Tonight: Mostly clear with a low in the mid to upper 60s.

Saturday: Clouds and sun. A slight chance of a thundershower. The high will be in the low to mid 80s.

The extended forecast calls for clouds and sun on Sunday with a slight chance of a thundershower. The low will be in the mid to upper 60s and the high will be in the low to mid 80s. Clouds and sun on Monday with a chance of a thunderstorm. The low will be in the mid to upper 60s and the high will be in the mid to upper 80s. Warm and humid on Tuesday with a chance of a thunderstorm. The low will be around 70 and the high will be in the upper 80s. Warm and humid on Wednesday with a chance of a thunderstorm. The low will be around 70 and the high will be near 90 degrees.

Weather Summary

High pressure near western Pennsylvania will continue to impact our weather today with ample sunshine, warm temperatures, and comfortable levels of humidity. We are enjoying another pleasant morning with readings in the low to mid 60s near the bay, and upper 50s inland. Highs today will reach the low to mid 80s, just a bit warmer and more humid than yesterday. This high will move to the northeast over the weekend, and an area of low pressure off the Atlantic coast will produce an easterly fetch of air over the Middle Atlantic states. The result will be morning cloudiness followed by clouds and sun during the afternoon. Temperatures on Saturday and Sunday will reach the low to mid 80s. There is a slight chance of a thunderstorm, but most locations will remain dry through Sunday evening.

Regional Weather Information

Baltimore average lows and highs

Washington average lows and highs

National Weather Service daily weather discussion

Baltimore/Washington National Weather Service

Chesapeake Bay marine forecast

Mid-Atlantic radar loop

For more weather updates, please visit my web site www.chesapeakebayweather.com, my Chesapeake Bay Weather page on Facebook, and if you're heading to Ocean City feel free to check out my Ocean City MD Weather page on Facebook. You can also follow me on Twitter @chesbayweather.