Live Weather & Forecast
Weather in Clayton
California, United States · Real-time conditions & 3-day outlook
11°C
Feels like 11°C
52°F / Feels 51°F
Overcast
Clayton, California
🌙 Nighttime
Updated: 2026-04-13 01:45
Humidity
83%
Wind
5.8 km/h S
Wind Gust
9.7 km/h
Pressure
1018 mb
Visibility
16 km
UV Index
0
(Low)
Precipitation
0.26 mm
Cloud Cover
100%
Dew Point
7.9°C
Wind Degree
170°
Air Quality Index
US EPA: Good
UK DEFRA: Low (2)
CO
174.9 μg/m³
NO₂
15.9 μg/m³
O₃
39 μg/m³
SO₂
4.1 μg/m³
PM 2.5
13.1 μg/m³
PM 10
16.4 μg/m³
Today's Hourly Forecast
24-hour breakdown for Clayton, California
12 AM
10°
Patchy light rain
1 AM
11°
Overcast
2 AM
10°
Light drizzle
3 AM
10°
Patchy rain nearby
4 AM
10°
Patchy rain nearby
5 AM
9°
Partly Cloudy
6 AM
9°
Clear
7 AM
9°
Overcast
8 AM
10°
Mist
9 AM
11°
Cloudy
10 AM
11°
Partly Cloudy
11 AM
12°
Partly Cloudy
12 PM
13°
Partly Cloudy
1 PM
14°
Partly Cloudy
2 PM
15°
Partly Cloudy
3 PM
16°
Partly Cloudy
4 PM
16°
Partly Cloudy
5 PM
16°
Partly Cloudy
6 PM
15°
Partly Cloudy
7 PM
14°
Partly Cloudy
8 PM
12°
Clear
9 PM
11°
Clear
10 PM
10°
Clear
11 PM
10°
Clear
3-Day Forecast
Daily overview for Clayton, California
Today
Patchy rain nearby
17°
/
9°
🌧️ 84% chance of rain
💧 Avg. humidity: 81%
💨 Max wind: 14 km/h
🌧️ Total precip: 1.65 mm
☀️ UV Index: 1.5
🌅 Sunrise: 06:35 AM
🌇 Sunset: 07:42 PM
🌙 Waning Crescent
🌑 Moon: 23% lit
Tue, Apr 14
Mist
19°
/
8°
🌧️ 0% chance of rain
💧 Avg. humidity: 82%
💨 Max wind: 14 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.6
🌅 Sunrise: 06:33 AM
🌇 Sunset: 07:43 PM
🌙 Waning Crescent
🌑 Moon: 15% lit
Wed, Apr 15
Partly Cloudy
16°
/
7°
🌧️ 0% chance of rain
💧 Avg. humidity: 81%
💨 Max wind: 18.4 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.5
🌅 Sunrise: 06:32 AM
🌇 Sunset: 07:44 PM
🌙 Waning Crescent
🌑 Moon: 8% lit
Best Time to Visit Clayton
Plan your trip to Clayton, 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.
Frequently Asked Questions
What is the current weather in Clayton?
Current conditions in Clayton: Overcast, temperature 11°C, humidity 83%.
What is the best time to visit Clayton?
The best time to visit Clayton is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Clayton?
Clayton is located at approximately 37.9° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Clayton?
The wettest period in Clayton is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Clayton?
For visits to Clayton during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What country is Clayton in?
Clayton is located in United States, in the state of California.
What are the public holidays in Clayton in 2026?
View the 2026 public holidays for Clayton on our Holidays page.
What are the GPS coordinates used for the weather forecast in Clayton?
The weather forecast for Clayton uses coordinates 37.9412, -121.9358.