 Our Sunday forecast sponsored by Northwest 12 Space Services. Proof that we got that big rock to the west, known as the Olympic Mountains, in control of what's going on. Clear and sunny at the start of the day for many. Then the clouds have now rolled in here to create a part of cloudy day. Some areas will actually be back in the sunshine later on. High today, mid-70s to near 81 for Seattle. Mostly clear tonight. Partly sunny then for Monday. Highs upper 60s and mid-70s. Slight touch of showers with some of the clouds moving into the area. If not, a light drizzle. Eastern Washington Extreme Heat Advisory.