By: Stephen McCoy

A cooler weekend awaits, especially in the mornings, after a relatively warm Friday. The cold front mentioned in the previous forecasts sis still expected to move through the region Friday night/early Saturday morning. The front will bring a likely chance for rain during the overnight hours, mostly around midnight, but chances will fall off Saturday morning before sunrise; no precipitation is anticipated for the remainder of the weekend. Little impact is expected to track sessions as a result, however early sessions might have to fit the rain tires.

Winds behind the front will be largely from the West/Northwest, bringing in cooler air from the northern Pacific, with temperatures during the mornings in the upper 30's to low 40's and afternoon temperatures in the upper 50's to low 60's. Moist air in the upper levels of the atmosphere from the Southwest will result in partly to mostly cloudy conditions for both Saturday and Sunday while some low level cloud cover is possible, especially in the mornings; patchy fog may be present Sunday morning.

By: Stephen McCoy

Little change to the conditions for this weekend's races at Sonoma Raceway. A cold front approaching the region from the West towards the end of the week will cause warmer temperatures to occur in the region as winds ahead of the front will bring in air from the South. Moisture from the Pacific will bring the possibility for fog Friday morning, but should clear by mid-day. The front is expected to move through the Bay area overnight Friday into Saturday morning, resulting in a likely chance for showers during the overnight period, but conditions during the day should be dry. Winds behind the front from the West/Northwest will cause temperatures to cool slightly for the remainder of the weekend.

By: Stephen McCoy

After a quick warm-up for the early part of the week, cooler conditions will move in for the weekend with chances for precipitation on Saturday and Sunday.

Fog may be present to start of Friday morning due mostly clear nighttime conditions and surface/low level winds from the South bringing moisture off the Pacific. These winds will continue for most of the day as the result of a cold front approaching from the west. Warm air moving ahead of the front will give a high temperature for the day in the low 60's. Conditions for the day will be partly cloudy with cloud cover increasing into the evening and overnight.

The cold front is expected to move through the Bay area early Saturday morning, resulting in a chance for showers mainly before noon.Winds will shift behind the front to the West/Northwest, bringing cooler air to the region, with a high anticipated in the low 50's. Wind speeds are expected between 5-15 MPH through the day, with some gusts possible upwards of 25 MPH. The cooler conditions from Saturday will linger into Sunday along with a slight chance for scattered showers during the morning.

As By Doug Schneider

No surprises are in store for the weather during the 24 Hours of Daytona. Dry weather is expected through the race, with mostly sunny skies today followed by clouds generally increasing through tonight and tomorrow morning. There is a chance of rain that will arrive Sunday night, but it will not arrive until long after the end of the race.

By Doug Schneider

The weather for the Rolex 24 continues to look great with today's forecast update.

Today, a few light showers are possible as a cold front approaches the area. Temperatures will be quite warm, with a high near 80 degrees. The cold front will move through tonight.

Thursday will be much cooler behind the cold front, and it will be breezy as well with gusts up to 25 mph at times. 

The remainder of the event will see sunny skies and a gradual warming trend as winds shift to a southerly direction by Sunday. There will be a low chance of light showers arriving Sunday night. This timing has been consistent for the past few days, but I will keep an eye on it in case it moves up into Sunday afternoon and potentially affect the end of the race.