Nimbocast

Clearlake, CA Weather

Live radar, hourly and 7-day forecast, and National Weather Service alerts for Clearlake, Lake County, California.

Updated Jul 29, 2026, 2:07 PM local time · Radar refreshes every 5 minutes

☀️
Clearlake
Clear
96°F
Feels like 95°F
Wind 9 mph
Humidity 19%
Cloud cover 0%
UV index 8
Alerts 3

Active alerts (3)

Extreme Heat WarningSevere
Cuyama Valley; Santa Clarita Valley; Southern Salinas Valley; San Luis Obispo County Interior Valleys; San Luis Obispo County Mountains; Santa Ynez Mountains Western Range; Santa Ynez Mountains Eastern Range; Santa Barbara County Interior Mountains; Ventura County Inland Coast; Lake Casitas; Ojai Valley; Central Ventura County Valleys; Los Angeles County Inland Coast including Downtown Los Angeles; Western Santa Monica Mountains Recreational Area; Eastern Santa Monica Mountains Recreational Area; Calabasas and Agoura Hills; Western San Fernando Valley; Eastern San Fernando Valley; Southeastern Ventura County Valleys; Santa Susana Mountains; Southern Ventura County Mountains; Los Angeles County San Gabriel Valley
Until Aug 3, 2026, 3:00 AM
Full details
* WHAT...Dangerously hot conditions with temperatures of 95 to 110
expected.

* WHERE...A large portion of southwest California including the
coastal ranges and adjacent foothills, as well as the coastal
valleys.

* WHEN...From 10 AM Friday to 8 PM PDT Sunday.

* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.

* ADDITIONAL DETAILS...Heat hazards may extend into next week for
portions of the region.

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.

Stay cool, stay hydrated, stay informed.

Monitor the latest forecasts and warnings for updates.

If you do not have air conditioning in your home or lack shelter, you
can call 2 1 1 for assistance locating appropriate shelter from the
heat.
Extreme Heat WarningSevere
Northwest Plateau; Lake Havasu and Fort Mohave; Lake Mead - AZ side; Lake Mohave - AZ side; Hualapai Mountains; Northwest Deserts; Death Valley National Park; Western Mojave Desert; Eastern Mojave Desert, Including the Mojave National Preserve; Morongo Basin; Cadiz Basin; San Bernardino County-Upper Colorado River Valley; Owens Valley South; Owens Valley North; Esmeralda and Central Nye County; Lincoln County; Northeast Clark County; Western Clark and Southern Nye County; Las Vegas Valley; Southern Clark County; Lake Mead - NV side; Lake Mohave - NV side
Until Jul 29, 2026, 11:00 PM
Full details
* WHAT...Dangerously hot conditions with highs 110 to 120 degrees
across the Mojave Desert. Highs 100 to 110 degrees across most of
the southern Great Basin and Arizona Strip. Little to no overnight
relief is expected, particularly in the Mojave Desert where lows of
80 to 95 degrees are forecast. This will result in major to extreme
heat risk.

* WHERE...Portions of northwest Arizona, southeast California, and
south central and southern Nevada.

* WHEN...From 10 AM PDT /10 AM MST/ Thursday to 8 PM PDT /8 PM MST/
Sunday.

* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.

Monitor the latest forecasts and warnings for updates.
Beach Hazards StatementModerate
Santa Barbara County Southwestern Coast; Santa Barbara County Southeastern Coast; Lake Casitas
Until Aug 2, 2026, 12:00 AM
Full details
* WHAT...Dangerous rip currents and elevated surf.

* WHERE...Santa Barbara County Southwestern Coast, Santa Barbara
County Southeastern Coast, and Lake Casitas.

* WHEN...Through Saturday afternoon.

* IMPACTS...There is an increased risk of ocean drowning. Rip
currents can pull swimmers and surfers out to sea. Waves can
wash people off beaches and rocks, and capsize small boats
nearshore.

* ADDITIONAL DETAILS...There is an increased risk of ocean
drowning due to hazardous rip currents. Rip currents can pull
swimmers and surfers out to sea. Waves can wash people off
beaches and rocks, and capsize small boats nearshore.

Remain out of the water due to hazardous swimming conditions, or
stay near occupied lifeguard towers. Rock jetties can be deadly
in such conditions, stay off the rocks.

Clearlake weather radar

Light Heavy

Next 24 hours

Now
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96°F
 
3 PM
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96°F
 
4 PM
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95°F
 
5 PM
☀️
93°F
 
6 PM
☀️
90°F
 
7 PM
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86°F
 
8 PM
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81°F
 
9 PM
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77°F
 
10 PM
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74°F
 
11 PM
☀️
73°F
 
12 AM
☀️
71°F
 
1 AM
☀️
70°F
 
2 AM
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68°F
 
3 AM
☀️
68°F
 
4 AM
☁️
67°F
 
5 AM
☁️
67°F
 
6 AM
☀️
66°F
 
7 AM
☁️
67°F
 
8 AM
☀️
75°F
 
9 AM
☀️
80°F
 
10 AM
☀️
85°F
 
11 AM
☀️
90°F
 
12 PM
☀️
93°F
 
1 PM
☀️
95°F
 

7-day forecast

Today
Jul 29
☀️
96°F
63°F
Thu
Jul 30
☁️
96°F
66°F
Fri
Jul 31
☀️
104°F
67°F
Sat
Aug 1
☀️
107°F
65°F
Sun
Aug 2
☀️
109°F
67°F
Mon
Aug 3
☀️
108°F
68°F
Tue
Aug 4
☀️
109°F
70°F

Weather near Clearlake

30 mi Windsor, CA34 mi Ukiah, CA36 mi Santa Rosa, CA43 mi Rohnert Park, CA44 mi Agua Caliente, CA49 mi Napa, CA50 mi Petaluma, CA50 mi Woodland, CA
Alerts are relayed from the National Weather Service and may lag the official source. In a life-threatening situation always follow weather.gov and local emergency broadcasts.