Forecast discussion: Saturday started off with bright sunshine in the morning, but eventually a weak disturbance brought increasing clouds. Now, Boston could see some scattered showers and thunderstorms before dawn. There is a small line of heavy rain passing through central and eastern Connecticut at the moment. All precipitation will end before dawn, as the disturbance moves offshore.
For Sunday, a weak high pressure ridge will give us mostly sunny skies during the morning, but any sunshine will help bring daytime heating. An occluded front will help trigger some showers and thunderstorms by the middle of the afternoon. Although the probability is quite low, some thunderstorms may be accompanied with lightning and small hail. After midnight, the front will move offshore and high pressure behind the front will help clear skies before dawn Monday morning.
The high will give us dry weather and seasonable temperatures into Thursday morning. A slow moving warm front will bring scattered showers by the afternoon, and continue into Friday. It appears by the American and European models that the cold front will remain near the eastern coastline. So, we will continue to see wet weather right into next Saturday.
72 hour forecast:
Tonight: Cloudy with passing showers and isolated thunderstorms. We will see a low of 50.
Sunday: Partly sunny and windy with showers and possible thunderstorms developing by 3 p.m. We will see a high of 65. Some thunderstorms may have lightning and small hail. Winds will come from the west at 17-22 mph.
Fenway Park Forecast (1:35 p.m. vs. Oakland): Cloudy and windy, showers and thunderstorms possible by 3 p.m., 61.
Sunday night: Light rain with isolated thunderstorms. All precipitation will end by midnight. We will have a low of 48. Winds will come from the west-northwest at 14-17 mph.
Monday: Clearing with partly to mostly sunny skies by the late morning. We will have a high of 63.
Monday night: Partly cloudy with a low of 45.
Tuesday: Mostly sunny with a high of 62.
Tuesday night: Partly cloudy with a low of 44.
Wednesday: Mostly sunny. Highs 60-63, lows 43-46.
Thursday: Partly sunny with showers developing around 4 p.m. Highs 62-65, lows 47-50.
Friday: Cloudy with showers/light rain in the morning with afternoon thunderstorms. Highs 62-65, lows 48-51.
Saturday: Cloudy with scattered showers and possible thunderstorms. Highs 61-64, lows 50-53.