Lots of precipitation -- rain and snow -- is heading toward southwestern Connecticut starting today and making most of the weekend miserable, according to the National Weather Service.

Rain arrived early this morning and is expected to gain intensity this afternoon, with occasional downpours and even thunderstorms possible, the NWS warns. There could be as much as 2.5 inches of rainfall before the rain tapers off late tonight

There also are expected to be foggy conditions as the temperature climbs into the mid-40s.

The wind, however, could be the most dangerous of the day's mix of unpleasant elements, with readings of between 23 and 26 mph later, gusting as high as 60 mph. The high wind advisory is in effect for the area from 11 a.m. to 11 p.m. today.

And the rain and high winds have also prompted the weather service to issue a flood watch through tomorrow morning. Flooding of streets, underpasses and viaducts, as well streams and ponds possible from the combined impact of the heavy rain and melting snow pack.

As the rain begins tapering off tonight, there is a chance of snow showers. Tonight will be cloudy with the temperature expected to a low of about 22 degrees.

Tomorrow is expected to be cloudy with a high near 34. The west wind will calm to between 14 and 17 mph.

But tomorrow night there is a chance of snow, continuing into Sunday morning before 9 a.m. After noontime, that precipitation should change to rain.

By Sunday night, there is a chance of snow again, perhaps mixing with rain and the changing back to snow after midnight.

On Monday, there is more rain and snow in the morning forecast, the becoming all rain after 9 a.m., the weather service predicts The daytime high should be about 50 degrees.