Sunday, July 05, 2009

July 6th, 2009 Forecast

Now (Sunday AM): A sunny start for the northern half of the region, with some mid and high level clouds for Philadelphia on south. Temperatures are starting out in the mid 60's to around 70.

Through Sunday: With a disturbance sliding to our south, some clouds will impact the region but the vast majority of us should stay dry. There might be a shower down by Rehoboth Beach and points south from there but the areas between Rehoboth and Philadelphia should see only mid and high level cloud cover increase through the day. Skies will be progressively sunny as you travel north of Philadelphia today. High temperatures should be in the 80-84 range, warmest north where there should be more sunshine.

Tonight: Evening clouds should march off the coast overnight, leaving most of us clear to partly cloudy by morning. Outside of a shower chance early in the evening for the Delmarva, we should be dry. Lows will drop into the 50's north of the city to the mid 60's in Center City Philadelphia overnight.

Monday: Morning sunshine will give way to a mix of sun and clouds in the afternoon. An upper level low will pivot southeast from Canada towards us and could set off a shower across areas north of I-80 late in the afternoon but right now, the city and immediate areas should remain dry. High temperatures will bounce into the lower and middle 80's away from the coast, mid and upper 70's at the Shore.

The Week Ahead: After the upcoming upper level low moves through Tuesday with a chance for a pop up shower or storm, we should see a few nice days to wrap up the work week. The question at this point is how warm we get. The EURO is suggesting that we will have a run at 90 Friday or Saturday and until last night, the GFS agreed. As a heat ridge builds in the Plains, some of the heat will nudge eastward ahead of a frontal boundary that crosses the region late Saturday or perhaps Sunday with a chance of thunderstorms.

Later Today: Musings about Nino and the upcoming winter.