UTC Offset
UTC-07:00
Clearlake, United States Snapshot 2026
Where is Clearlake?
Clearlake, United States
- Continent
- Americas
- Country
- United States
- City
- Clearlake
- Population
- 15.2K
- Elevation
- 432 m
- Coordinates
- 38.96°, -122.63°
Clearlake is a city in United States with a population of approximately 15.2K. Average temperatures range from 5°C (40°F) in January to 37°C (98°F) in July. The best time to visit is May, June, September, October. The city sits at an elevation of 432 m above sea level.
Time in Clearlake right now
Open full time & time zone page 11:52 52
Monday, June 15, 2026
IANA time zone
America/Los_Angeles
Daylight saving
DST in effect
PST / PDT
Next DST change
November 1
backward -1h
Live weather in Clearlake
Daylight in Clearlake today
View full sunrise & sunset page Sunrise
Sunset
Day length
14h 53m
Climate normals for Clearlake
Long-term monthly averages based on historical data.
January
Poor 
February
Fair March
Fair April
Good May best
Excellent June best
Excellent July
Good August
Good September best
Excellent October best
Excellent November
Good December
Fair | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 14°C / 5°C | 11°C / 2°C | 11days (166 mm) Wet | 6.2h Fair | 77% Humid | 2.7 Moderate | Poor | View Details |
| February | 16°C / 5°C | 13°C / 2°C | 8days (140 mm) Wet | 7.9h Good | 68% Muggy | 3.4 Moderate | Fair | View Details |
| March | 17°C / 5°C | 14°C / 3°C | 12days (128 mm) Wet | 8.8h Good | 71% Muggy | 4.8 Moderate | Fair | View Details |
| April | 22°C / 8°C | 20°C / 6°C | 6days (40 mm) Good | 11h Excellent | 63% Muggy | 6.5 High | Good | View Details |
| May best | 27°C / 12°C | 26°C / 11°C | 4days (31 mm) Good | 12.6h Excellent | 56% Moderate | 7.9 Very High | Excellent | View Details |
| June best | 33°C / 17°C | 33°C / 16°C | 1days (4 mm) Excellent | 13.5h Excellent | 44% Moderate | 8.2 Very High | Excellent | View Details |
| July | 37°C / 20°C | 37°C / 20°C | 0days (1 mm) Excellent | 13.5h Excellent | 39% Comfortable | 8.3 Very High | Good | View Details |
| August | 36°C / 20°C | 36°C / 21°C | 1days (2 mm) Excellent | 12.6h Excellent | 42% Moderate | 7.6 Very High | Good | View Details |
| September best | 32°C / 17°C | 31°C / 17°C | 2days (11 mm) Excellent | 11.3h Excellent | 47% Moderate | 6.4 High | Excellent | View Details |
| October best | 26°C / 13°C | 24°C / 11°C | 4days (44 mm) Good | 9.4h Good | 51% Moderate | 4.8 Moderate | Excellent | View Details |
| November | 18°C / 8°C | 16°C / 6°C | 7days (86 mm) Good | 7.7h Good | 66% Muggy | 3.2 Moderate | Good | View Details |
| December | 14°C / 5°C | 12°C / 2°C | 10days (136 mm) Wet | 6.1h Fair | 74% Muggy | 2.3 Moderate | Fair | View Details |
Monthly Temperatures
HighLow
Line chart showing monthly temperatures. Jan: 14°C / 5°C . Feb: 16°C / 5°C . Mar: 17°C / 5°C . Apr: 22°C / 8°C . May: 27°C / 12°C . Jun: 33°C / 17°C . Jul: 37°C / 20°C . Aug: 36°C / 20°C . Sep: 32°C / 17°C . Oct: 26°C / 13°C . Nov: 18°C / 8°C . Dec: 14°C / 5°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 166 mm. Feb: 140 mm. Mar: 128 mm. Apr: 40 mm. May: 31 mm. Jun: 4 mm. Jul: 1 mm. Aug: 2 mm. Sep: 11 mm. Oct: 44 mm. Nov: 86 mm. Dec: 136 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 77%. Feb: 68%. Mar: 71%. Apr: 63%. May: 56%. Jun: 44%. Jul: 39%. Aug: 42%. Sep: 47%. Oct: 51%. Nov: 66%. Dec: 74%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 11 km/h . Feb: 13 km/h . Mar: 13 km/h . Apr: 13 km/h . May: 13 km/h . Jun: 13 km/h . Jul: 12 km/h . Aug: 11 km/h . Sep: 11 km/h . Oct: 11 km/h . Nov: 10 km/h . Dec: 10 km/h .
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 3. Feb: UV 3. Mar: UV 5. Apr: UV 7. May: UV 8. Jun: UV 8. Jul: UV 8. Aug: UV 8. Sep: UV 6. Oct: UV 5. Nov: UV 3. Dec: UV 2.
Frequently Asked Questions
Clearlake has a population of approximately 15.2K.
The best months to visit Clearlake are May, June, September, October, when temperatures are pleasant and rainfall is lower.
Clearlake receives approximately 789mm of rainfall annually across 66 rainy days.
Clearlake is located in United States, in the Americas region.
Clearlake sits at an elevation of 432 m (1,417 ft) above sea level.