First Alert Forecast

Cool, Cloudy Weather in SD County Will Give Way to Heat This Week

Marine clouds are filled in over the coast, which is producing drizzle and some light rain for the morning commute

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As the first weekend of April wraps up, San Diegans will be met with cloudy skies and scattered showers through most of the morning. The deepening marine layer is bringing the damp conditions to mainly the coastline and inland valley communities through at least late morning ahead of an overcast afternoon.

"This is a really light showery system as I mentioned, we have those rain chances continuing through later this morning and maybe through this afternoon," NBC 7's Brooke Martell said.

High temperatures along the coast Sunday were predicted to be 62 to 67 degrees with overnight lows of 50 to 56. Valley highs were expected to be 63 to 68 with overnight lows of 46 to 52.

Highs in the mountains were expected to be 58 to 68 with overnight lows of 40 to 48, and highs in the deserts will be 84 to 89 with overnight lows of 60 to 65.

Skies on Monday were forecast to turn mostly sunny as a building ridge suppresses the marine layer. A stronger ridge was predicted to bring hot days Wednesday through Friday, the NWS said.

Forecasters' confidence was high that coastal highs will reach the 80s, valley highs will reach the 90s, and the lower deserts will eclipse 100 degrees Wednesday through Friday.

The heatwave was expected to end next weekend when a Pacific trough moves inland across Southern California. This was predicted to be followed by a more substantial West Coast trough that could transition to a much colder pattern with chances of precipitation early next week.

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