Highs near 107 are expected across the Santa Clarita Valley this afternoon, with an excessive heat warning in effect today from 2 p.m. to 8 p.m.

Sunday should see highs of 106 with winds of 5-15 mph and gusts up to 25 mph blowing out of the southwest.

The National Weather Service pegs Monday’s high for the SCV at 100, with temperatures falling into the low to mid-90s throughout the week.

Monsoonal moisture continues to stream across the area with a possibility of afternoon thunderstorms in the Antelope Valley and mountain regions.

The Antelope Valley and coastal regions are ripe for “dry lightning” – lightning produced in thunderstorms where the rain evaporates before it hits the ground – which increases the risk of fires.

Locally, the SCV Senior Center is a county-designated cooling station. Hours of operation are today from 11 a.m. to 10 p.m., Sunday from 8:30 a.m. to 4 p.m., and weekdays from 8 a.m. to 4:30 p.m..

The latest 7-day forecast from the National Weather Service follows:

This Afternoon: Mostly sunny and hot, with a high near 107. Southwest wind between 10 and 15 mph, with gusts as high as 20 mph.

Tonight: Partly cloudy, with a low around 72. South southwest wind 5 to 15 mph becoming north northeast. Winds could gust as high as 25 mph.

Sunday: Sunny and hot, with a high near 106. North northeast wind 5 to 15 mph becoming west. Winds could gust as high as 25 mph.

Sunday Night: Mostly clear, with a low around 70. Breezy, with a southwest wind 15 to 20 mph becoming south southeast 5 to 10 mph.

Monday: Sunny and hot, with a high near 100. North northeast wind 5 to 15 mph becoming southwest.

Monday Night: Clear and breezy, with a low around 67.

Tuesday: Sunny, with a high near 95.

Tuesday Night: Clear, with a low around 65.

Wednesday: Sunny, with a high near 92.

Wednesday Night: Clear, with a low around 62.

Thursday: Sunny, with a high near 92.

Thursday Night: Clear, with a low around 63.

Friday: Sunny and hot, with a high near 96.