Temps will pop back up to 75 during the day on Sunday, but it will stay plenty cool in the evenings through mid-week.
Via the NWS:
This Afternoon: Sunny, with a high near 69. Light northwest wind.
Tonight: Clear, with a low around 40. Calm wind.
Sunday: Sunny, with a high near 75. Calm wind becoming southwest around 6 mph.
Sunday Night: Mostly clear, with a low around 47. Light west wind.
Monday: Sunny, with a high near 76. Calm wind becoming north around 6 mph.
Monday Night: Partly cloudy, with a low around 47.
Tuesday: Mostly sunny, with a high near 67.
Tuesday Night: Partly cloudy, with a low around 45.