Live Weather & Forecast

Weather in Clearlake

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

Flag of United States
Clear
6°C
Feels like 6°C
43°F / Feels 42°F
Clear
Clearlake, California
🌙 Nighttime
Updated: 2026-04-13 05:00
💧
Humidity
87%
💨
Wind
4 km/h N
🌬️
Wind Gust
8.3 km/h
🌡️
Pressure
1019 mb
👁️
Visibility
2 km
☀️
UV Index
0 (Low)
🌧️
Precipitation
0 mm
☁️
Cloud Cover
21%
💦
Dew Point
4°C
🌐
Wind Degree
359°

Air Quality Index

US EPA: Good UK DEFRA: Low (1)
CO
160.9 μg/m³
NO₂
1.8 μg/m³
O₃
81 μg/m³
SO₂
1.2 μg/m³
PM 2.5
2.8 μg/m³
PM 10
3 μg/m³

Weather Alerts 2

Met · Minor · Expected
Frost Advisory issued April 12 at 12:24PM PDT until April 13 at 8:00AM PDT by NWS Eureka CA

* WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Northern Mendocino Interior, and Northern Lake. * WHEN...From 2 AM to 8 AM PDT Monday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. * ADDITIONAL DETAILS...Some valleys may see fog instead, which will reduce the risk of frost.

Take steps now to protect tender plants from the cold.

Effective: 2026-04-12T12:24:00-07:00  ·  Expires: 2026-04-13T08:00:00-07:00
Met · Minor · Expected
Frost Advisory issued April 12 at 10:32PM PDT until April 13 at 8:00AM PDT by NWS Eureka CA

* WHAT...Temperatures as low as 35 will result in frost formation. * WHERE...Northern Mendocino Interior, and Northern Lake. * WHEN...From 2 AM to 8 AM PDT Monday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. * ADDITIONAL DETAILS...Some valleys may see fog instead, which will reduce the risk of frost.

Take steps now to protect tender plants from the cold.

Effective: 2026-04-12T22:32:00-07:00  ·  Expires: 2026-04-13T08:00:00-07:00

Today's Hourly Forecast

24-hour breakdown for Clearlake, California

12 AM
Patchy rain nearby
8°
Patchy rain nearby
💧 86% 💨 2.9 km/h 🌧️ 83%
1 AM
Partly Cloudy
8°
Partly Cloudy
💧 86% 💨 4 km/h
2 AM
Clear
7°
Clear
💧 89% 💨 4 km/h
3 AM
Clear
7°
Clear
💧 91% 💨 4.7 km/h
4 AM
Partly Cloudy
6°
Partly Cloudy
💧 89% 💨 3.6 km/h
5 AM
Clear
6°
Clear
💧 87% 💨 4 km/h
6 AM
Clear
6°
Clear
💧 85% 💨 4.3 km/h
7 AM
Sunny
6°
Sunny
💧 83% 💨 4 km/h
8 AM
Sunny
8°
Sunny
💧 86% 💨 2.5 km/h
9 AM
Sunny
9°
Sunny
💧 80% 💨 2.2 km/h
10 AM
Partly Cloudy
10°
Partly Cloudy
💧 75% 💨 2.9 km/h
11 AM
Partly Cloudy
12°
Partly Cloudy
💧 72% 💨 2.5 km/h
12 PM
Sunny
13°
Sunny
💧 64% 💨 2.9 km/h
1 PM
Sunny
13°
Sunny
💧 59% 💨 3.2 km/h
2 PM
Cloudy
14°
Cloudy
💧 55% 💨 5 km/h
3 PM
Cloudy
14°
Cloudy
💧 55% 💨 6.5 km/h
4 PM
Cloudy
13°
Cloudy
💧 58% 💨 5.4 km/h
5 PM
Overcast
13°
Overcast
💧 70% 💨 5.8 km/h
6 PM
Partly Cloudy
12°
Partly Cloudy
💧 64% 💨 6.1 km/h
7 PM
Sunny
11°
Sunny
💧 68% 💨 6.5 km/h
8 PM
Clear
10°
Clear
💧 73% 💨 5.8 km/h
9 PM
Clear
8°
Clear
💧 80% 💨 6.1 km/h
10 PM
Clear
6°
Clear
💧 85% 💨 7.2 km/h
11 PM
Mist
6°
Mist
💧 96% 💨 7.2 km/h

3-Day Forecast

Daily overview for Clearlake, California

Today
Partly Cloudy
Partly Cloudy
15° / 4°
🌧️ 0% chance of rain
💧 Avg. humidity: 77%
💨 Max wind: 7.2 km/h
🌧️ Total precip: 0.02 mm
☀️ UV Index: 1.4
🌅 Sunrise: 06:36 AM
🌇 Sunset: 07:46 PM
🌙 Waning Crescent
🌑 Moon: 23% lit
Tue, Apr 14
Partly Cloudy
Partly Cloudy
14° / 4°
🌧️ 0% chance of rain
💧 Avg. humidity: 79%
💨 Max wind: 7.6 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.6
🌅 Sunrise: 06:35 AM
🌇 Sunset: 07:47 PM
🌙 Waning Crescent
🌑 Moon: 15% lit
Wed, Apr 15
Patchy rain nearby
Patchy rain nearby
10° / 5°
🌧️ 79% chance of rain
💧 Avg. humidity: 85%
💨 Max wind: 22.7 km/h
🌧️ Total precip: 4.7 mm
☀️ UV Index: 1.5
🌅 Sunrise: 06:33 AM
🌇 Sunset: 07:48 PM
🌙 Waning Crescent
🌑 Moon: 8% lit

Best Time to Visit Clearlake

Plan your trip to Clearlake, 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 Clearlake 🗓 View Holidays 2026

Frequently Asked Questions

What is the current weather in Clearlake?
Current conditions in Clearlake: Clear, temperature 6°C, humidity 87%.
What is the best time to visit Clearlake?
The best time to visit Clearlake is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Clearlake?
Clearlake is located at approximately 39° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Clearlake?
The wettest period in Clearlake is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Clearlake?
For visits to Clearlake during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What country is Clearlake in?
Clearlake is located in United States, in the state of California.
What are the public holidays in Clearlake in 2026?
View the 2026 public holidays for Clearlake on our Holidays page.
What are the GPS coordinates used for the weather forecast in Clearlake?
The weather forecast for Clearlake uses coordinates 38.9582, -122.6264.