Another afternoon, another round of rain.

Yet another slug of showers is set to kick up around 4 p.m., with a chance for thunderstorms especially in the western part of the state thanks to clear skies that are allowing the atmosphere to heat up and become more unstable.

Across the state, the main thing to watch for is locally heavy rainfall. “The atmosphere is pretty moist so any kind of showers could produce hard rain,” meteorologist Bill Simpson said.

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Don’t expect any severe storms east of Interstate 495 — temperatures didn’t budge beyond the mid-60s today, keeping the atmosphere more stable.

The ground is already pretty soaked following this morning’s rain — Barnstable reported the most precipitation in the state with just fewer than 3 inches, while areas east of the Cape Cod Canal saw between one and two inches, according to the weather service.

A flood watch has been issued for all of Massachusetts except for Cape Cod and the islands, through this afternoon. The weather service advises those living in flood-prone areas to take precautionary measures.

The showers will gradually diminish through the evening as temperatures dip to the mid-50s. The northern part of the Boston area is likely to see the most precipitation overnight, forecasters said.

The clouds will stick around Wednesday, with scattered showers possible and highs only around 70. In the western part of the state, especially between Hartford and Springfield, temperatures could reach the upper 70s, Simpson said.

The soggy conditions will continue Thursday into Friday as a coastal low moves northward, dropping another half an inch to an inch of rain.