Live Weather & Forecast

Weather in Walnut Creek

California, United States · Real-time conditions & 3-day outlook

Flag of United States
Light rain
11°C
Feels like 8°C
51°F / Feels 47°F
Light rain
Walnut Creek, California
🌙 Nighttime
Updated: 2026-04-12 01:15
💧
Humidity
86%
💨
Wind
20.9 km/h SSW
🌬️
Wind Gust
32.3 km/h
🌡️
Pressure
1008 mb
👁️
Visibility
16 km
☀️
UV Index
0 (Low)
🌧️
Precipitation
0.57 mm
☁️
Cloud Cover
75%
💦
Dew Point
7.5°C
🌐
Wind Degree
213°

Air Quality Index

US EPA: Good UK DEFRA: Low (1)
CO
159.9 μg/m³
NO₂
6.8 μg/m³
O₃
69 μg/m³
SO₂
2.5 μg/m³
PM 2.5
5 μg/m³
PM 10
6.9 μg/m³

Weather Alerts 1

Met · Minor · Expected
Flood Advisory issued April 11 at 8:45PM PDT until April 12 at 12:00AM PDT by NWS Sacramento CA

* WHAT...Urban and small stream flooding caused by heavy rain and thunderstorms continues. * WHERE...Portions of central and northern California, including the following counties, Placer, Amador, Butte, El Dorado, Nevada, Sacramento, San Joaquin, Sutter, Yolo and Yuba. * WHEN...Until midnight PDT tonight. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Rises in small streams an...

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding. Be aware of your surroundings and do not drive on flooded roads.

Effective: 2026-04-11T20:45:00-07:00  ·  Expires: 2026-04-12T00:00:00-07:00

Today's Hourly Forecast

24-hour breakdown for Walnut Creek, California

12 AM
Clear
10°
Clear
💧 85% 💨 20.5 km/h
1 AM
Light rain
11°
Light rain
💧 86% 💨 20.9 km/h 🌧️ 100%
2 AM
Partly Cloudy
9°
Partly Cloudy
💧 78% 💨 19.8 km/h
3 AM
Patchy rain nearby
9°
Patchy rain nearby
💧 80% 💨 23.4 km/h 🌧️ 100%
4 AM
Overcast
10°
Overcast
💧 82% 💨 28.1 km/h
5 AM
Patchy rain nearby
9°
Patchy rain nearby
💧 85% 💨 25.9 km/h 🌧️ 77%
6 AM
Clear
9°
Clear
💧 85% 💨 25.2 km/h
7 AM
Partly Cloudy
10°
Partly Cloudy
💧 84% 💨 27 km/h
8 AM
Patchy rain nearby
10°
Patchy rain nearby
💧 78% 💨 20.5 km/h 🌧️ 83%
9 AM
Patchy rain nearby
11°
Patchy rain nearby
💧 75% 💨 14.4 km/h 🌧️ 100%
10 AM
Light drizzle
11°
Light drizzle
💧 79% 💨 14.4 km/h 🌧️ 100%
11 AM
Light drizzle
12°
Light drizzle
💧 79% 💨 17.6 km/h 🌧️ 100%
12 PM
Patchy light drizzle
13°
Patchy light drizzle
💧 73% 💨 22 km/h 🌧️ 100%
1 PM
Patchy rain nearby
13°
Patchy rain nearby
💧 78% 💨 17.6 km/h 🌧️ 100%
2 PM
Patchy light rain
13°
Patchy light rain
💧 78% 💨 22 km/h 🌧️ 100%
3 PM
Cloudy
13°
Cloudy
💧 75% 💨 20.2 km/h
4 PM
Cloudy
13°
Cloudy
💧 74% 💨 20.2 km/h
5 PM
Light rain shower
12°
Light rain shower
💧 79% 💨 20.9 km/h 🌧️ 100%
6 PM
Cloudy
12°
Cloudy
💧 71% 💨 16.9 km/h
7 PM
Partly Cloudy
11°
Partly Cloudy
💧 73% 💨 13.7 km/h
8 PM
Light rain shower
11°
Light rain shower
💧 89% 💨 9 km/h 🌧️ 100%
9 PM
Partly Cloudy
11°
Partly Cloudy
💧 79% 💨 7.6 km/h
10 PM
Partly Cloudy
10°
Partly Cloudy
💧 83% 💨 6.8 km/h
11 PM
Patchy rain nearby
10°
Patchy rain nearby
💧 80% 💨 6.8 km/h 🌧️ 100%

3-Day Forecast

Daily overview for Walnut Creek, California

Today
Moderate rain
Moderate rain
14° / 9°
🌧️ 88% chance of rain
💧 Avg. humidity: 79%
💨 Max wind: 28.1 km/h
🌧️ Total precip: 6.99 mm
☀️ UV Index: 1.2
🌅 Sunrise: 06:37 AM
🌇 Sunset: 07:42 PM
🌙 Waning Crescent
🌑 Moon: 33% lit
Mon, Apr 13
Cloudy
Cloudy
16° / 10°
🌧️ 0% chance of rain
💧 Avg. humidity: 79%
💨 Max wind: 10.8 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.4
🌅 Sunrise: 06:35 AM
🌇 Sunset: 07:43 PM
🌙 Waning Crescent
🌑 Moon: 23% lit
Tue, Apr 14
Mist
Mist
16° / 8°
🌧️ 0% chance of rain
💧 Avg. humidity: 82%
💨 Max wind: 12.2 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.6
🌅 Sunrise: 06:34 AM
🌇 Sunset: 07:44 PM
🌙 Waning Crescent
🌑 Moon: 15% lit

Best Time to Visit Walnut Creek

Plan your trip to Walnut Creek, United States around the most favorable weather conditions.

Peak Season
June – September
Warm, dry summers — ideal for outdoor activities.
Shoulder Season
April – May, October
Fewer crowds, moderate prices, mild weather.
Off Season
November – March
Cooler temperatures; some regions may experience rain or snow.
← Back to Walnut Creek 🗓 View Holidays 2026

Frequently Asked Questions

People also ask — answers optimized for search engines and voice queries.

What is the current weather in Walnut Creek?
Current conditions in Walnut Creek: Light rain, temperature 11°C, humidity 86%.
What is the best time to visit Walnut Creek?
The best time to visit Walnut Creek is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Walnut Creek?
Walnut Creek is located at approximately 37.9° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Walnut Creek?
The wettest period in Walnut Creek is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Walnut Creek?
For visits to Walnut Creek during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What country is Walnut Creek in?
Walnut Creek is located in United States, in the state of California.
What are the public holidays in Walnut Creek in 2026?
View the 2026 public holidays for Walnut Creek on our Holidays page.
What are the GPS coordinates used for the weather forecast in Walnut Creek?
The weather forecast for Walnut Creek uses coordinates 37.9021, -122.0619.