(KRON) — Temperatures remain below seasonal averages through early next week.
Key Messages
- Expect widespread stratus during the overnight hours as the marine layer continues to deepen and expand farther inland through early next week.
- A warming trend starts on Wednesday.
Sunday through Tuesday
Temperatures: low pressure will linger off the Bay Area coast through Tuesday, maintaining a fairly deep marine layer, and causing seasonal to below normal temperatures. Highs across the interior will generally be in the 70s to 80s with the warmest within the far interior East Bay Hills will reach the low 90s. Coastal areas will continue to see cooler areas in the upper 50s to 60s. Today’s forecast high temperatures are running approximately 5 – 10 degrees below normal for this time of year, with below normal temperatures expected to continue for the first half of the upcoming week.
Stratus: this morning , the marine layer has deepened to around 1000′ – 1200′. Stratus extends along much of the coastline and filters into the San Francisco Bay shoreline and portions of the interior valleys. Conditions will start to clear by mid to late morning. The marine layer will deepen to 1500’ – 2000′ tonight, with widespread stratus late tonight, continuing into Monday. Coastal locations will see stratus returning each night and dissipating by mid to late morning. Stratus is expected to push into the San Francisco Bay Shoreline, portions of the Santa Clara Valley, and the North Bay Valleys again on Tuesday night. Coastal drizzle is likely overnight Monday and Tuesday with the persistent low and deeper marine layer.
Winds: locally breezy winds with gusts to around 25 mph are expected across the Altamont Pass region this afternoon and evening. Otherwise, today will be a good day to get outside.
Wednesday through Saturday
Low pressure begins to weaken on Wednesday as it progresses into far northern California and Oregon. As this occurs, high pressure over the Four Corners region expands and shifts into southern California, bringing a zonal flow to slight ridging over the Bay Area. This will kick off a warming trend with highs in the 80s to 90s across the interior. The warmest locations (portions of the East Bay Hills, Interior North Bay Mountains) will reach the upper 90s to low 100s.
The warmest days this week look to be Thursday and Friday, where moderate HeatRisk is set to affect the Bay Area. Moderate HeatRisk impacts anyone who is sensitive to heat and does not have access to adequate cooling/hydration. Temperatures remain warm on Saturday but will be a few degrees cooler, with highs generally in the 80s to low 90s across the interior. There could be changes to the forecast temperatures for late in the week into weekend, as the computer models continue to struggle with the forecast for that time period, so check back with KRON4 for the latest updates.
(KRON) — Temperatures remain below seasonal averages through early next week. Key Messages Sunday through Tuesday Temperatures: low pressure will linger off the Bay Area coast through Tuesday, maintaining a fairly deep marine layer, and causing seasonal to below normal temperatures. Highs across the interior will generally be in the 70s to 80s with the […]