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Posted at 05:00 AM ET, 06/05/2012

Forecast: Cool pattern continues; 80s and more sun featured this weekend


Today: Variable skies. Shower risk. 70-74 | Tonight: Partly cloudy, cool. 49-54. | Tomorrow: Variable skies, PM shower risk. 72-76. | Get Express Forecast by E-mail


A somewhat subjective rating of the day’s weather, on a scale of 0 to 10

I believe these cool temperatures are excellent for June, but I can’t go any higher on account of shower risks and the displeasure of hot-summer fanatics. Get the Digit on Twitter| Discuss on Facebook


Yesterday’s high of 75 at Washington Reagan National was six degrees cooler than normal. And I believe today we can probably do better than that as high temperatures are mostly in the low 70s under mixed skies. A large dominating dip in the jet stream (known as a “trough”) is keeping us quite cool with just enough upper level instability to trigger shower risks, especially in the afternoons. This feature starts to ease out of our area just in time for Friday and the weekend, which allows us to pop back into the 80s and feel more like summer (and it looks mostly dry too!).

Today (Tuesday): The coolest day of the week is expected with variable sky conditions and high temperatures mainly in the low 70s. The morning has the best chance of mostly sunny skies, while the afternoon (due to daytime heating) should see more clouds and shower chances (a 30% risk of them). Winds from the northeast at 5-10 mph are occasionally more breezy. Confidence: Medium-High

Tonight: Partly cloudy and cool with lows dipping to the upper 40s in the outer suburbs to the low-to-mid 50s in the city. Light winds and only a 20% chance of a mainly evening shower. Confidence: Medium-High

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

Tomorrow (Wednesday): We continue under this “troughing” pattern with cooler-than-normal temperatures, variable sky cover, and continued mainly afternoon shower chances (this time about a 40% risk). Highs are a little warmer with middle 70s expected. Confidence: Medium-High

Tomorrow night: Partly cloudy and cool again with lows ranging through the 50s. And we can’t rule out a 20% risk of a mainly evening shower again. Confidence: Medium-High


Thursday finds us still under the influence of the cool dip in the jet stream pattern, but our air mass is moderating at least. Highs should range up into the upper 70s with variable sky conditions and a continued 30% chance of showers. Partly cloudy and cool Thursday night with lows from the mid-50s in the outer ‘burbs to low 60s in the city. Confidence: Medium

Friday begins the transition toward more summer-like weather with partly to mostly sunny skies and high temperatures finally moving back into the 80s (at least low 80s at the first stage here). Mostly clear skies Friday night sees temperatures only dropping into the 60s. Confidence: Medium

The weekend offers more summer-time conditions with partly to mostly sunny skies expected. Highs are forecast to range in the mid-to-upper 80s on Saturday and upper 80s to near 90 on Sunday. Most guidance shows a dry weather weekend, but we could see humidity increment a bit higher over the course of the period (nothing serious though). Some hotter weather (low 90s) is possible early next week before another cold front. Confidence: Medium

By  |  05:00 AM ET, 06/05/2012

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