DAYS 1-5 (AUGUST 1-5)
August opens with a disturbance passing by to our south, but close enough that it has brought a few periods of rain to the South Coast region and some showers to the north of there. It’s no drought-buster by any stretch, far from it, but any raindrops are welcomed right now. Our problem is, we haven’t been able to string together several beneficial events in this part of the country of late, and that pattern is going to continue, as it looks right now, for some time into August. But first, focusing on the month’s first 5 days, we see that disturbance exit today, replaced later by weak high pressure and partial clearing, modest humidity, and not too hot a day to open the month. The high shifts offshore Tuesday as a low pressure trough and weak cold front approach. This allows it to be very warm and more humid Tuesday, along with a shower and thunderstorm chance mainly later in the day. This boundary passes by and a new high pressure area takes hold Wednesday. This day will feature lower humidity but still very warm to hot air. As that high slides offshore by Thursday, this is when we can expect our hottest weather for the week with many areas easily exceeding 90 for high temps and some areas reaching the middle to upper 90s. As far as any thunderstorm chances go on Thursday, we’ll have to watch for the development of a line or cluster of storms to the west of the WHW forecast area that afternoon, closer to an approaching trough of low pressure, to see if it can manage to survive into parts of the region by later in the day or in the evening. By Friday, that trough of low pressure takes the edge of the high heat, but it still will be a very warm to hot and humid day, and add to that a better chance of showers and thunderstorms as a cold front approaches.
TODAY: Clouds most dominant morning, less so afternoon. Periods of rain early in the day South Coast region with scattered to isolated showers elsewhere, diminishing through the morning. Additional showers or drizzle South Coast this afternoon. Highs 82-89. Dew point 60s. Wind variable to S up to 10 MPH.
TONIGHT: Partly cloudy. Fog patches forming. Lows 63-70. Dew point lower to middle 60s. Wind SW up to 10 MPH.
TUESDAY: Partly sunny. Scattered showers and thunderstorms west to east mid afternoon to early evening. Highs 86-93. Dew point middle 60s to near 70. Wind SW 5-15 MPH, but can be variable and gusty near any storms.
TUESDAY NIGHT: Clearing. Patchy fog forming interior lower elevations. Lows 60-67. Dew point falling through 60s. Wind NW up to 10 MPH.
WEDNESDAY: Mostly sunny. Highs 78-85 coast, 85-92 inland. Dew point upper 50s to lower 60s. Wind N to E up to 10 MPH.
WEDNESDAY NIGHT: Partly cloudy. Patchy fog interior lower elevations. Lows 63-70. Dew point lower to middle 60s. Wind SE to S up to 10 MPH.
THURSDAY: Mostly sunny to partly cloudy. An evening thunderstorm possible favoring areas north and west of Boston. Highs 92-99 except 85-92 South Coast and 78-85 Nantucket. Dew point upper 60s to lower 70s. Wind SW 5-15 MPH, higher gusts possible.
THURSDAY NIGHT: Partly cloudy. An evening shower or thunderstorm possible, mainly north and west of Boston. Lows 72-77. Dew point near 70. Wind SW 5-15 MPH
FRIDAY: Variably cloudy. Chance of showers and thunderstorms. Highs 88-95. Dew point near 70. Wind SW 5-15 MPH, higher gusts possible.
DAYS 6-10 (AUGUST 6-10)
The front that approaches late week will be moving out of the region during the first part of the August 6-7 weekend but may be close enough for lingering showers South Coast to start the weekend and a potential return of those showers by the end of the weekend, otherwise most areas look dry with near to slightly above normal temperatures and modest humidity. Higher heat/humidity along with a shower and thunderstorm chance August 8 with high pressure offshore and an approaching frontal boundary. If current timing holds, high pressure moves in with slightly drier and seasonably warm weather toward the middle of next week.
DAYS 11-15 (AUGUST 11-15)
Near to above normal temperatures with higher humidity dominant as we head into the middle of the month. Opportunities for showers / thunderstorms at times, but overall pattern looks fairly dry.