Barometric Pressure Forecast for Guerneville, California
Barometric pressure forecast for Guerneville, California — a redwood-shaded town on the lower Russian River in Sonoma County. See current barometric pressure through winter atmospheric rivers, summer marine fog and the shifting Pacific systems of the North Coast.
Download Pressure Pal to track barometric pressure and get migraine alerts for Guerneville and your area.
Pressure and weather in Guerneville
Guerneville nestles in a deep river canyon among coast redwoods, only about fifteen miles from the Pacific through the Russian River gap. That gap lets ocean air push inland almost daily in summer, as the cool marine layer rolls up the river in the evening and burns back by midday. Winter is when pressure really moves. Pacific storms and atmospheric rivers, long plumes of moisture aimed at northern California, arrive in strings from November through March, each with a steep pressure drop as the low approaches and a rebound as it leaves. These same systems have caused notable Russian River flooding in the past. In fall, dry offshore winds occasionally reverse the flow, bringing warm, low-humidity weather and a pressure pattern that swings the opposite way. Winter carries the largest and most frequent swings.
What this means for you
In Guerneville, the important pressure changes come with winter Pacific storms and atmospheric rivers from November through March, while summer stays steady beneath the marine layer. Following a barometric pressure forecast and recording symptoms in a migraine tracker app can help show if your weather migraine flares line up with the approach of each storm.