Current Conditions

Walnut Creek, California

77°F25°C
Partly Cloudy

Wind

SW 9 mph15 km/h

Humidity

47%

Cloud Cover

66%

As of Wednesday, August 12, 2026 at 3:25 PM PDT

Today's Outlook

Day

Mostly cloudy and warm, with a high of 77°F25°C and morning low of 69°F21°C. Breezy from the WSW at 9 to 11 mph14 to 18 km/h.

Night

Mostly cloudy, with a low around 62°F17°C. Breezy from the SW at 9 to 10 mph15 to 15 km/h.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
Partly CloudyHigh 77°F25°CLow 62°F17°CPrecip 0 in0 mmCloud 74%Wind SW 9 mph15 km/hWednesday: Mostly cloudy and warm, with a high of 77°F25°C and morning low of 69°F21°C. Breezy from the WSW at 9 to 11 mph14 to 18 km/h. Wednesday Night: Mostly cloudy, with a low around 62°F17°C. Breezy from the SW at 9 to 10 mph15 to 15 km/h.
Partly CloudyHigh 71°F22°CLow 59°F15°CPrecip 0 in0 mmCloud 72%Wind SW 10 mph16 km/hThursday: Mostly cloudy and warm, with a high of 71°F22°C and morning low of 61°F16°C. Breezy from the SW at 11 to 12 mph17 to 19 km/h. Thursday Night: Overcast, with a low around 59°F15°C. Breezy from the SW at 10 to 11 mph16 to 17 km/h.
Partly CloudyHigh 71°F22°CLow 58°F15°CPrecip 0 in0.1 mmCloud 67%Wind SW 8 mph13 km/hFriday: Mostly cloudy and warm, with a high of 71°F22°C and morning low of 61°F16°C. Breezy from the SW at 9 to 10 mph14 to 17 km/h. Friday Night: Mostly cloudy, with a low around 58°F15°C. Breezy from the WSW at 8 to 9 mph13 to 14 km/h.
Partly CloudyHigh 73°F23°CLow 57°F14°CPrecip 0 in0 mmCloud 64%Wind WSW 7 mph12 km/hSaturday: Mostly cloudy and warm, with a high of 73°F23°C and morning low of 60°F15°C. Breezy from the WSW at 8 to 10 mph13 to 16 km/h. Saturday Night: Mostly cloudy, with a low around 57°F14°C. Breezy from the WSW at 7 to 8 mph11 to 13 km/h.
CloudyHigh 76°F24°CLow 57°F14°CPrecip 0 in0 mmCloud 81%Wind WSW 7 mph11 km/hSunday: Overcast and warm, with a high of 76°F24°C and morning low of 58°F15°C. Breezy from the WSW at 7 to 9 mph11 to 15 km/h. Sunday Night: Overcast, with a low around 57°F14°C. Breezy from the WSW at 6 to 8 mph10 to 12 km/h.
CloudyHigh 74°F23°CLow 57°F14°CPrecip 0 in0 mmCloud 82%Wind WSW 7 mph12 km/hMonday: Mostly cloudy and warm, with a high of 74°F23°C and morning low of 59°F15°C. Breezy from the WSW at 8 to 10 mph13 to 15 km/h. Monday Night: Overcast, with a low around 57°F14°C. Breezy from the SW at 7 to 8 mph11 to 13 km/h.
Partly CloudyHigh 76°F24°CLow 57°F14°CPrecip 0 in0 mmCloud 60%Wind WSW 7 mph11 km/hTuesday: Mostly cloudy and warm, with a high of 76°F24°C and morning low of 59°F15°C. Breezy from the WSW at 7 to 9 mph12 to 15 km/h. Tuesday Night: Mostly cloudy, with a low around 57°F14°C. Breezy from the SW at 7 to 8 mph11 to 13 km/h.

15-Day Forecast

Day High Low Precip Cloud Cover Condition Wind
WednesdayAug 1277°F25°C62°F17°C0 in0 mm· —74%Partly CloudySW 9 mph15 km/h
ThursdayAug 1371°F22°C59°F15°C0 in0 mm· —72%Partly CloudySW 10 mph16 km/h
FridayAug 1471°F22°C58°F15°C0 in0.1 mm· —67%Partly CloudySW 8 mph13 km/h
SaturdayAug 1573°F23°C57°F14°C0 in0 mm· —64%Partly CloudyWSW 7 mph12 km/h
SundayAug 1676°F24°C57°F14°C0 in0 mm· —81%CloudyWSW 7 mph11 km/h
MondayAug 1774°F23°C57°F14°C0 in0 mm· —82%CloudyWSW 7 mph12 km/h
TuesdayAug 1876°F24°C57°F14°C0 in0 mm· —60%Partly CloudyWSW 7 mph11 km/h
WednesdayAug 1977°F25°C57°F14°C0 in0 mm· —43%Partly CloudySW 7 mph12 km/h
ThursdayAug 2077°F25°C58°F14°C0 in0 mm· —35%ClearWSW 7 mph12 km/h
FridayAug 2179°F26°C58°F14°C0 in0 mm· —32%ClearWSW 7 mph11 km/h
SaturdayAug 2280°F26°C58°F15°C0 in0 mm· —29%ClearWSW 6 mph10 km/h
SundayAug 2380°F27°C59°F15°C0 in0 mm· —28%ClearWSW 7 mph11 km/h
MondayAug 2479°F26°C59°F15°C0 in0 mm· —32%ClearWSW 7 mph11 km/h
TuesdayAug 2578°F26°C59°F15°C0 in0 mm· —35%ClearWSW 7 mph11 km/h
WednesdayAug 2677°F25°C58°F15°C0 in0 mm· —40%ClearWSW 7 mph11 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: 37.9063°N, 122.0650°W·Elevation: 52m·Timezone: America/Los_Angeles·Population: 68,910