Boston to end 19-day dry spell with Thursday rain

Rain is expected to arrive in Boston on Thursday, ending a 19-day streak without measurable precipitation. Forecaster reports indicate that low pressure will bring unsettled weather to the region late this week. This weather pattern follows a period of dry conditions that began in late October.

Temperatures will rise sharply over the coming workweek. After a cool start this morning, highs in the mid to upper 50s and low 60s are forecast for Sunday. From Monday through Thursday, temperatures will largely remain in the mid to upper 60s. Some locations may reach 70 degrees, which is 10 degrees above the seasonal average.

The warm conditions will create a September-like atmosphere during the workweek. On Tuesday, which is Election Day, morning temperatures will likely require a jacket when polls open. By the afternoon, however, temperatures may be warm enough for short sleeves. Cloud cover will increase on Tuesday, though high clouds will dominate the sky.

The weather will become unstable starting Thursday. A mix of sun and clouds is expected on Wednesday, but Thursday represents the first significant chance for rain. Precipitation is most likely in the second half of the day. This rain would conclude a dry period that has extended for nearly three weeks.

The dry spell currently stands at 15 days. If the forecast holds for Sunday through Wednesday, the streak will reach 19 days before the rain arrives. The arrival of low pressure is expected to disrupt the dry pattern. Unsettled conditions are projected to persist through Friday and Saturday. Meteorologists note some discrepancy in models for the late week forecast, suggesting updates may be necessary as the system approaches.