Orange County’s inland temperatures should shoot past the mid-80s through the week, theNational Weather Service says, while monsoon moisture flows briefly into Southern California on Monday.

Most of the moisture’s effect will be in the mountains and deserts well to our east, where wind, lightning strikes and brief heavy rain are possible.

A low-pressure system off the coast, to our north, is pulling the moisture into the region, but should weaken by Tuesday.

That will bring a return of dry air from the southwest, with air flow from the ocean increasing, although monsoon moisture could be back for the weekend.

The forecast, meanwhile, is a rerun through Sunday: some low clouds and fog in the morning and, Tuesday through Sunday, mostly sunny skies in the afternoon.

Monday manages only partly cloudy skies.

Inland highs should stay fairly steady, and close to average for this time of year or slightly above, forecasters say.

That should mean 81 to 86 Monday, 82 to 87 Tuesday and Wednesday, 81 to 86 again Thursday, and bumping up a degree or so once more Friday.

Saturday and Sunday it should be 81 to 86 again.

The coast will be similarly steady: 71 Monday, 72 Tuesday and Wednesday, 69 to 74 Thursday, 72 Friday and 71 again Saturday and Sunday.