Current Conditions

San Ramon, California

70°F21°C
Clear

Wind

N 2 mph3 km/h

Humidity

56%

Cloud Cover

3%

As of Wednesday, September 23, 2026 at 12:27 PM PDT

Today's Outlook

Day

Mostly clear and warm, with a high of 86°F30°C and morning low of 70°F21°C. Light wind from the NNW around 3 mph5 km/h.

Night

Mostly clear, with a low around 64°F18°C. Light wind from the SW around 4 mph6 km/h.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
ClearHigh 86°F30°CLow 64°F18°CPrecip 0 in0 mmCloud 6%Wind WNW 3 mph6 km/hWednesday: Mostly clear and warm, with a high of 86°F30°C and morning low of 70°F21°C. Light wind from the NNW around 3 mph5 km/h. Wednesday Night: Mostly clear, with a low around 64°F18°C. Light wind from the SW around 4 mph6 km/h.
Partly CloudyHigh 86°F30°CLow 57°F14°CPrecip 0 in0 mmCloud 51%Wind SW 4 mph7 km/hThursday: Mostly cloudy and warm, with a high of 86°F30°C and morning low of 59°F15°C. Breezy from the WSW at 5 to 9 mph8 to 14 km/h. Thursday Night: Partly cloudy, with a low around 57°F14°C. Light wind from the SSW around 4 mph7 km/h.
ClearHigh 78°F26°CLow 57°F14°CPrecip 0 in0 mmCloud 26%Wind WSW 6 mph10 km/hFriday: Partly cloudy and warm, with a high of 78°F26°C and morning low of 60°F16°C. Breezy from the WSW at 7 to 9 mph12 to 14 km/h. Friday Night: Partly cloudy, with a low around 57°F14°C. Light wind from the SW around 5 mph7 km/h.
ClearHigh 77°F25°CLow 53°F12°CPrecip 0 in0 mmCloud 35%Wind WSW 5 mph8 km/hSaturday: Partly cloudy and warm, with a high of 77°F25°C and morning low of 56°F13°C. Breezy from the WSW at 5 to 8 mph8 to 12 km/h. Dry air. Saturday Night: Partly cloudy, with a low around 53°F12°C. Light wind from the SW around 4 mph7 km/h.
ClearHigh 72°F22°CLow 54°F12°CPrecip 0 in0 mmCloud 39%Wind SW 6 mph10 km/hSunday: Partly cloudy and warm, with a high of 72°F22°C and morning low of 56°F13°C. Breezy from the WSW at 8 to 9 mph12 to 14 km/h. Sunday Night: Partly cloudy, with a low around 54°F12°C. Light wind from the SW around 5 mph8 km/h.
ClearHigh 78°F25°CLow 53°F12°CPrecip 0 in0 mmCloud 20%Wind WSW 4 mph7 km/hMonday: Mostly clear and warm, with a high of 78°F25°C and morning low of 55°F13°C. Light wind from the WNW around 4 mph7 km/h. Dry air. Monday Night: Mostly clear, with a low around 53°F12°C. Light wind from the SW around 4 mph7 km/h.
ClearHigh 82°F28°CLow 56°F13°CPrecip 0.01 in0.3 mm4%Cloud 15%Wind WSW 4 mph7 km/hTuesday: Mostly clear and warm, with a high of 82°F28°C and morning low of 58°F14°C. Light wind from the W around 4 mph7 km/h. Dry air. Tuesday Night: Mostly clear, with a low around 56°F13°C. Light wind from the SW around 4 mph6 km/h.

15-Day Forecast

Day High Low Precip Cloud Cover Condition Wind
WednesdaySep 2386°F30°C64°F18°C0 in0 mm· —6%ClearWNW 3 mph6 km/h
ThursdaySep 2486°F30°C57°F14°C0 in0 mm· —51%Partly CloudySW 4 mph7 km/h
FridaySep 2578°F26°C57°F14°C0 in0 mm· —26%ClearWSW 6 mph10 km/h
SaturdaySep 2677°F25°C53°F12°C0 in0 mm· —35%ClearWSW 5 mph8 km/h
SundaySep 2772°F22°C54°F12°C0 in0 mm· —39%ClearSW 6 mph10 km/h
MondaySep 2878°F25°C53°F12°C0 in0 mm· —20%ClearWSW 4 mph7 km/h
TuesdaySep 2982°F28°C56°F13°C0.01 in0.3 mm· 4%15%ClearWSW 4 mph7 km/h
WednesdaySep 3082°F28°C58°F14°C0.03 in0.8 mm· 5%25%ClearSW 4 mph7 km/h
ThursdayOct 180°F27°C58°F15°C0.01 in0.2 mm· 3%37%ClearWSW 4 mph7 km/h
FridayOct 282°F28°C58°F14°C0 in0.1 mm· 5%27%ClearWSW 4 mph7 km/h
SaturdayOct 383°F28°C59°F15°C0 in0.1 mm· 2%24%ClearW 4 mph6 km/h
SundayOct 483°F28°C60°F15°C0 in0.1 mm· 2%25%ClearWSW 4 mph6 km/h
MondayOct 582°F28°C60°F15°C0.01 in0.3 mm· 4%26%ClearWSW 4 mph6 km/h
TuesdayOct 682°F28°C60°F16°C0 in0.1 mm· 3%25%ClearWSW 4 mph6 km/h
WednesdayOct 782°F28°C60°F15°C0.01 in0.2 mm· 2%24%ClearWSW 4 mph6 km/h

Nearby Cities

About This Forecast

This forecast is powered by WeatherMesh, the world's most advanced and accurate weather model powered by AI. WeatherMesh is built on proprietary data from WindBorne's Global Sounding Balloon constellation — the world's largest fleet of autonomous, long-duration weather balloons — collecting observations across 100% of Earth, including over oceans and remote regions where no other data exists.

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Coordinates: 37.7799°N, 121.9780°W·Elevation: 148m·Timezone: America/Los_Angeles·Population: 76,134