Yesterday saw temperatures run some 20 degrees below seasonal averages as high temperatures only reached the mid 60s for most locations. Boston officially recorded a high of 64 which made it the lowest high temperature in July since July 1st of 2009. Considering the gruesome heat wave we just experienced that is a turnaround of some 30 degrees or so from the highs we were experiencing during the heat wave.
For the greater Boston area, North Shore and western suburbs the showers and occasional periods of heavy rain moved into the area last night and continues this morning. The National Weather Service has a Flash Flood Watch in place for the possibility of heavy showers that may cause some flooding of low lying areas and small streams.
The morning weather map places a low pressure system south of Cape Cod. This system is expected to move near Cape Cod and continue northward through eastern Maine and eventually into New Brunswick Saturday. Another cool and wet day is in store today, although not quite as cool as yesterday. Overall, the rain activity is expected to taper off during the afternoon to occasional showers and may linger into tonight through the North Shore, especially near the coast. High temperatures upper 60s on the coast to low and a few mid 70s inland. A brisk northeast to north wind will gust to near 25 mph at times along the coast.
Tonight, slow improvement with the coast the last to get rid of any leftover showers. By morning it should be generally partly cloudy inland to mostly cloudy on the coast. Areas of fog redevelop overnight. Lows will fall to the low 60s. Light west winds.
After a two day hiccup in the weather we return to summertime conditions on Saturday. After some early morning fog sunshine returns, temperatures warm into the low and mid 80s and it should be a fine day for outdoor activities, including a visit to the beach. Light southwest winds, perhaps to 10 or 15 mph on the beaches. You will notice the humidity levels increasing by later in the day. Overnight, partly cloudy and milder. Lows in the mid to upper 60s.
Our next weather system approaches Sunday, a cold front that is expected to work its way through here early on Monday and low pressure offshore will combine to bring a mostly cloudy Sunday with a good chance for showers and a few thunderstorms. These conditions will persist through the overnight and into Monday as well, before the front moves the wet weather out to sea. Highs Sunday and Monday generally in the low 80s. Lows in the upper 60s to 70 degrees. It will be on the humid side, especially Sunday and Sunday night.