Weather Forecast: Heavy Rains Arriving on Labor Day

From the NBC10 Boston First Alert Weather Center… Today (Monday): Expanding pockets of rain, downpours and thunder. Localized flash flooding. Highs around 70. Overnight Monday Night: Rain, downpours and fog. Lows around 60. Tuesday: Rain to showers, patchy fog. Highs in the 60s. Cape Cod Radio Forecast: Today (Monday): Staying mostly dry until evening showers arrive. Highs in the middle 70s, humid. Overnight Monday Night: Rain and fog. Lows around 65. Tuesday: Rain and patchy fog. Total rain amounts around half an inch for most, Highs near 70.