DAYS 1-5 (JULY 9-13)
We’re back in an unsettled weather pattern that started with a few showers and thunderstorms in the area yesterday that blossomed into a more concentrated belt of storms coming in 2 parts and giving much of the region from I-90 southward quite a lightning show including some areas of torrential rainfall. Today, the disturbance that triggered the final round of storms late last night is still moving through with additional showers and embedded downpours this morning, but this activity will diminish today as the disturbance departs. We are left with a light but regionwide flow of marine air from the Atlantic as a frontal boundary sits just to our south. Areas of fog will result, and a general cloud cover with limited breaks. Any breaks / solar heating along with existing surface boundaries can fire off a few more showers and possible thunderstorms this afternoon – mainly near the South Coast and also inland generally west of I-495. As another disturbance crosses the region tonight, these will be morphed into a more general shower area that will give much of the region some needed rain overnight into Thursday, with heavier thunderstorms probably confined to areas well to the west – generally west of the WHW forecast area. This activity will diminish leaving us with just a lot of clouds and maybe a spot shower on Friday. Some weekend improvement seems in the cards as weak high pressure builds in, we go rain-free, and experience a modest warm-up.
TODAY: Areas of fog. A cloudy start with fairly widespread early showers and embedded downpours.. Mostly cloudy – partial sun possible – later morning on with pop up afternoon showers and possible thunderstorms mainly west of I-495 and south of I-90. Highs 75-82, coolest coast. Dew point 60+. Wind N to E up to 10 MPH.
TONIGHT: Mostly cloudy. Areas fog. A shower possible in the evening. Widespread showers return overnight. Lows 61-68. Dew point 60+. Wind E up to 10 MPH.
THURSDAY: Mostly cloudy. Showers likely, tapering off west to east afternoon. Areas of fog. Highs 68-75. Dew point in 60s. Wind E 5-15 MPH.
THURSDAY NIGHT: Mostly cloudy. A shower possible. Patchy fog. Lows 61-68. Dew point 60+. Wind E up to 10 MPH.
FRIDAY: Mostly cloudy. A spot shower possible. Highs 71-78. Dew point in 60s. Wind E 5-15 MPH.
FRIDAY NIGHT: Partly cloudy. Fog patches. Lows 61-68. Dew point near 60. Wind E up to 10 MPH.
SATURDAY: Partly sunny. Highs 73-80, coolest coast. Dew point 60+. Wind E up to 10 MPH.
SATURDAY NIGHT: Partly cloudy. Patchy fog. Lows 61-68. Dew point 60+. Wind SE up to 10 MPH.
SUNDAY: Partly cloudy. Highs 76-83, coolest South Coast. Dew point 65+. Wind S up to 10 MPH.
DAYS 6-10 (JULY 14-18)
Disturbance and frontal system brings a shower / thunderstorm chance to the region July 14 into July 15 followed by fair weather by the middle of next week. Next shower / thunderstorm chance comes at the end of the period. No major heat.
DAYS 11-15 (JULY 19-23)
Early period, moderate humidity and temperatures, mainly fair weather with high pressure to the north dominant, keeping low pressure to the south far enough away to limit shower chances. Mid to late period some indications of high pressure building aloft with hotter weather again.