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San Gregorio, CA Weather Forecast
San Gregorio, CA Weather Forecast Dated: 1021 AM Mon Aug 31 2026 (San Gregorio Time)
Expect a cool pattern with a mix of sun and clouds and occasional showers over the next two weeks. generally humid conditions and no major pressure swings will dominate.
Monday, August 31, 2026
Mid-Morning
56°F 14°C
Light Drizzle
Mid-Afternoon
59°F 15°C
Cloudy
Early-Evening
60°F 16°C
Overcast
Cool with mostly cloudy skies, lower humidity and steady pressure. Winds WNW at 10 mph 16 km/h.
Tuesday, September 1, 2026
Mid-Morning
60°F 15°C
Overcast
Mid-Afternoon
59°F 15°C
Sunny
Early-Evening
60°F 16°C
Sunny
Cool with a mix of sun and clouds, steady humidity and steady pressure. Winds shifting from S to WNW at 6 mph 9 km/h.
Wednesday, September 2, 2026
Mid-Morning
58°F 15°C
Overcast
Mid-Afternoon
59°F 15°C
Sunny
Early-Evening
60°F 16°C
Sunny
Cool with a mix of sun and clouds, steady humidity and steady pressure.
Thursday, September 3, 2026
Mid-Morning
59°F 15°C
Sunny
Mid-Afternoon
59°F 15°C
Cloudy
Early-Evening
61°F 16°C
Cloudy
Cool with mostly cloudy skies, steady humidity and steady pressure. Winds shifting from SSE to NNW at 10 mph 16 km/h.
Friday, September 4, 2026
Mid-Morning
57°F 14°C
Scattered Showers
Mid-Afternoon
57°F 14°C
Sunny
Early-Evening
58°F 15°C
Sunny
Cool with a mix of sun and clouds, steady humidity and steady pressure. Winds shifting from NW to NNW at 12 mph 20 km/h.
Saturday, September 5, 2026
Mid-Morning
58°F 14°C
Sunny
Mid-Afternoon
58°F 14°C
Partly Cloudy
Early-Evening
58°F 15°C
Sunny
Cool with mostly sunny skies in the morning, then mostly sunny for the afternoon and evening, steady humidity and steady pressure. Winds shifting from NNW to SW at 10 mph 16 km/h.
Sunday, September 6, 2026
Mid-Morning
58°F 15°C
Overcast
Mid-Afternoon
60°F 16°C
Overcast
Early-Evening
61°F 16°C
Overcast
Cool with overcast skies, steady humidity and steady pressure. Winds shifting from ESE to NNW at 6 mph 10 km/h.
Monday, September 7, 2026
Mid-Morning
65°F 18°C
Overcast
Mid-Afternoon
70°F 21°C
Sunny
Early-Evening
69°F 21°C
Partly Cloudy
Warm with a mix of sun and clouds, steady humidity and steady pressure. Winds shifting from N to SW at 11 mph 17 km/h.
Tuesday, September 8, 2026
Mid-Morning
66°F 19°C
Light Showers
Mid-Afternoon
62°F 17°C
Scattered Showers
Early-Evening
60°F 16°C
Scattered Showers
Cool with a mix of sun and clouds, steady humidity and steady pressure. A few spotty showers; otherwise dry. Winds increasing from the SSE at 6 mph 10 km/h to SSE at 22 mph 35 km/h.
Wednesday, September 9, 2026
Mid-Morning
60°F 16°C
Light Fog
Mid-Afternoon
60°F 16°C
Fog
Early-Evening
60°F 16°C
Light Fog
Cool with a mix of sun and clouds, steady humidity and steady pressure. Fog at times.
Thursday, September 10, 2026
Mid-Morning
59°F 15°C
Sunny
Mid-Afternoon
60°F 16°C
Sunny
Early-Evening
61°F 16°C
Sunny
Cool with mostly sunny skies in the morning, then mostly sunny for the afternoon and evening, steady humidity and steady pressure. Winds shifting from SSE to S at 6 mph 9 km/h.
Friday, September 11, 2026
Mid-Morning
59°F 15°C
Sunny
Mid-Afternoon
59°F 15°C
Sunny
Early-Evening
60°F 15°C
Sunny
Cool with a mix of sun and clouds, steady humidity and steady pressure.
Saturday, September 12, 2026
Mid-Morning
58°F 15°C
Sunny
Mid-Afternoon
58°F 14°C
Sunny
Early-Evening
58°F 15°C
Sunny
Cool with mostly sunny skies in the morning, then mostly sunny for the afternoon and evening, steady humidity and steady pressure. Winds NW at 13 mph 21 km/h.
Sunday, September 13, 2026
Mid-Morning
58°F 14°C
Partly Cloudy
Mid-Afternoon
58°F 14°C
Partly Cloudy
Early-Evening
57°F 14°C
Partly Cloudy
Cool with a mix of sun and clouds, steady humidity and steady pressure. Winds shifting from NW to NNW at 10 mph 15 km/h.
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