Powered by WEATHER-INFO.COM
Your new global weather portal

Now · 8:07 AM

Lake Forest Weather & Hourly Forecast

United States · California · 92630

Sunny
69°F
Sunny
Feels like: 71°F
💧 Humidity 74% 🌡 Pressure 29.85 inHg 💨 Wind 2 mph 👁 Visibility 19.8 mi Clouds 2% ☀️ UV index 0.6 · Low 🌅 Sunrise 🌇 Sunset

Hourly Forecast for Lake Forest

Today
Sunny · 9:00 AM Sunny
72° 💧 None 💨 3 mph H 65%29.85 inHg
Sunny · 12:00 PM Sunny
80° 💧 None 💨 5 mph H 55%29.85 inHg
Sunny · 3:00 PM Sunny
82° 💧 None 💨 7 mph H 54%29.80 inHg
Sunny · 6:00 PM Sunny
73° 💧 None 💨 6 mph H 68%29.80 inHg
Clear night · 9:00 PM Clear night
68° 💧 None 💨 4 mph H 84%29.85 inHg
Tomorrow
Clear night · 12:00 AM Clear night
65° 💧 None 💨 1 mph H 92%29.88 inHg
Clear night · 3:00 AM Clear night
64° 💧 None 💨 1 mph H 88%29.85 inHg
Clear night · 6:00 AM Clear night
63° 💧 None 💨 2 mph H 83%29.88 inHg
Sunny · 9:00 AM Sunny
71° 💧 None 💨 5 mph H 65%29.94 inHg
Sunny · 12:00 PM Sunny
79° 💧 None 💨 8 mph H 51%29.94 inHg
Sunny · 3:00 PM Sunny
78° 💧 None 💨 10 mph H 54%29.88 inHg
Sunny · 6:00 PM Sunny
71° 💧 None 💨 7 mph H 69%29.88 inHg
Clear night · 9:00 PM Clear night
66° 💧 None 💨 5 mph H 85%29.94 inHg
Wednesday
Clear night · 12:00 AM Clear night
64° 💧 None 💨 3 mph H 88%29.94 inHg
Clear night · 3:00 AM Clear night
62° 💧 None 💨 1 mph H 92%29.94 inHg
Mostly clear night · 6:00 AM Mostly clear night
61° 💧 None 💨 3 mph H 92%29.94 inHg

In Lake Forest and, more broadly, across the state of California: This morning will start with mostly sunny skies and just a few clouds drifting through. Temperatures are expected to be warm, ranging from the mid-50s in the early hours to around 87 degrees Fahrenheit by the afternoon. The weather will remain dry throughout the day, with no precipitation anticipated. Winds will be light, coming from the northwest, with maximum speeds around 9 mph and occasional gusts up to 14 mph. Overall, it will be a warm and mostly sunny day with pleasant, light breezes. Be sure to stay hydrated and protect yourself from the sun during the hottest parts of the day.

15-Day Weather Outlook for Lake Forest

TomorrowTomorrow Sunny Sunny 80°/63° 💧 None 💨 10 mph
Wednesday, Sep 16Wed Sep 16 Mostly sunny Mostly sunny 77°/61° 💧 None 💨 8 mph
Thursday, Sep 17Thu Sep 17 Mostly sunny Mostly sunny 79°/61° 💧 0.001 in 💨 6 mph
Friday, Sep 18Fri Sep 18 Mostly sunny Mostly sunny 81°/62° 💧 None 💨 6 mph
Saturday, Sep 19Sat Sep 19 Mostly sunny Mostly sunny 83°/63° 💧 None 💨 6 mph
Sunday, Sep 20Sun Sep 20 Mostly sunny Mostly sunny 78°/63° 💧 None 💨 6 mph
Monday, Sep 21Mon Sep 21 Partly cloudy Partly cloudy 78°/64° 💧 None 💨 6 mph
Tuesday, Sep 22Tue Sep 22 Mostly sunny Mostly sunny 77°/66° 💧 None 💨 7 mph
Wednesday, Sep 23Wed Sep 23 Light rain Light rain 72°/65° 💧 0.027 in 💨 6 mph
Thursday, Sep 24Thu Sep 24 Overcast Overcast 72°/64° 💧 0.030 in 💨 5 mph
Friday, Sep 25Fri Sep 25 Sunny Sunny 76°/63° 💧 None 💨 6 mph
Saturday, Sep 26Sat Sep 26 Partly cloudy Partly cloudy 81°/63° 💧 None 💨 5 mph
Sunday, Sep 27Sun Sep 27 Mostly cloudy Mostly cloudy 84°/67° 💧 None 💨 5 mph
Monday, Sep 28Mon Sep 28 Sunny Sunny 83°/68° 💧 None 💨 5 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Lake Forest

Vertical axis: °F · Color based on temperature
Sunny at 9:00 AM
72° Today 9:00 AM
Sunny at 10:00 AM
76° 10:00 AM
Sunny at 11:00 AM
78° 11:00 AM
Sunny at 12:00 PM
80° 12:00 PM
Sunny at 1:00 PM
82° Today 1:00 PM
Sunny at 2:00 PM
82° 2:00 PM
Sunny at 3:00 PM
82° 3:00 PM
Sunny at 4:00 PM
80° 4:00 PM
Sunny at 5:00 PM
77° Today 5:00 PM
Sunny at 6:00 PM
73° 6:00 PM
Clear night at 7:00 PM
70° 7:00 PM
Clear night at 8:00 PM
68° 8:00 PM
Clear night at 9:00 PM
68° Today 9:00 PM
Clear night at 10:00 PM
67° 10:00 PM
Clear night at 11:00 PM
66° 11:00 PM
Clear night at 12:00 AM
65° 12:00 AM
Clear night at 1:00 AM
64° Tomorrow 1:00 AM
Clear night at 2:00 AM
64° 2:00 AM
Clear night at 3:00 AM
64° 3:00 AM
Clear night at 4:00 AM
63° 4:00 AM
Clear night at 5:00 AM
63° Tomorrow 5:00 AM
Clear night at 6:00 AM
63° 6:00 AM
Sunny at 7:00 AM
63° 7:00 AM
Sunny at 8:00 AM
68° 8:00 AM
Sunny at 9:00 AM
71° Tomorrow 9:00 AM
Sunny at 10:00 AM
75° 10:00 AM
Sunny at 11:00 AM
77° 11:00 AM
Sunny at 12:00 PM
79° 12:00 PM
Sunny at 1:00 PM
80° Tomorrow 1:00 PM
Sunny at 2:00 PM
80° 2:00 PM
Sunny at 3:00 PM
78° 3:00 PM
Sunny at 4:00 PM
76° 4:00 PM
Sunny at 5:00 PM
74° Tomorrow 5:00 PM
Sunny at 6:00 PM
71° 6:00 PM
Clear night at 7:00 PM
68° 7:00 PM
Clear night at 8:00 PM
67° 8:00 PM
Clear night at 9:00 PM
66° Tomorrow 9:00 PM
Clear night at 10:00 PM
65° 10:00 PM
Clear night at 11:00 PM
65° 11:00 PM
Clear night at 12:00 AM
64° 12:00 AM
Clear night at 1:00 AM
63° Wednesday 1:00 AM
Clear night at 2:00 AM
62° 2:00 AM
Clear night at 3:00 AM
62° 3:00 AM
Mostly clear night at 4:00 AM
61° 4:00 AM
Mostly clear night at 5:00 AM
61° Wednesday 5:00 AM
Mostly clear night at 6:00 AM
61° 6:00 AM
Mostly sunny at 7:00 AM
61° 7:00 AM
Mostly sunny at 8:00 AM
65° 8:00 AM
Mostly sunny at 9:00 AM
69° Wednesday 9:00 AM
Mostly sunny at 10:00 AM
72° 10:00 AM
Sunny at 11:00 AM
74° 11:00 AM
Sunny at 12:00 PM
76° 12:00 PM
Sunny at 1:00 PM
77° Wednesday 1:00 PM
Sunny at 2:00 PM
77° 2:00 PM
Sunny at 3:00 PM
77° 3:00 PM
Sunny at 4:00 PM
76° 4:00 PM
Sunny at 5:00 PM
74° Wednesday 5:00 PM
Mostly clear night at 2:00 AM
63° 2:00 AM
Mostly clear night at 5:00 AM
61° 5:00 AM
Mostly sunny at 8:00 AM
66° 8:00 AM
Sunny at 11:00 AM
75° Thursday 11:00 AM
Sunny at 2:00 PM
80° 2:00 PM
Sunny at 5:00 PM
76° 5:00 PM
Clear night at 8:00 PM
69° 8:00 PM
Clear night at 11:00 PM
66° Thursday 11:00 PM
Clear night at 2:00 AM
63° 2:00 AM
Mostly clear night at 5:00 AM
62° 5:00 AM
Mostly sunny at 8:00 AM
66° 8:00 AM
Sunny at 11:00 AM
76° Friday 11:00 AM
Sunny at 2:00 PM
82° 2:00 PM
Sunny at 5:00 PM
79° 5:00 PM
Clear night at 8:00 PM
71° 8:00 PM
Clear night at 11:00 PM
67° Friday 11:00 PM
Mostly clear night at 2:00 AM
65° 2:00 AM
Overcast night at 5:00 AM
63° 5:00 AM
Overcast at 8:00 AM
66° 8:00 AM
Sunny at 11:00 AM
77° Saturday 11:00 AM
Sunny at 2:00 PM
83° 2:00 PM
Sunny at 5:00 PM
80° 5:00 PM
Clear night at 8:00 PM
71° 8:00 PM
Partly cloudy night at 11:00 PM
66° Saturday 11:00 PM
Clear night at 5:00 AM
67° 5:00 AM
Sunny at 11:00 AM
63° 11:00 AM
Mostly sunny at 5:00 PM
76° 5:00 PM
Clear night at 11:00 PM
78° Sunday 11:00 PM
Mostly cloudy night at 5:00 AM
67° 5:00 AM
Partly cloudy at 11:00 AM
64° 11:00 AM
Sunny at 5:00 PM
77° 5:00 PM
Clear night at 11:00 PM
78° Monday 11:00 PM
Clear night at 5:00 AM
68° 5:00 AM
Mostly sunny at 11:00 AM
66° 11:00 AM
Sunny at 5:00 PM
77° 5:00 PM
Mostly clear night at 11:00 PM
77° Tuesday 11:00 PM
Mostly clear night at 5:00 AM
67° 5:00 AM
Partly cloudy at 11:00 AM
65° 11:00 AM
Overcast at 5:00 PM
72° 5:00 PM
Light rain at 11:00 PM
71° Wednesday 11:00 PM
Mostly cloudy night at 5:00 AM
67° 5:00 AM
Overcast at 11:00 AM
66° 11:00 AM
Overcast at 5:00 PM
69° 5:00 PM
Overcast night at 11:00 PM
72° Thursday 11:00 PM
Clear night at 5:00 AM
64° 5:00 AM
Sunny at 11:00 AM
63° 11:00 AM
Sunny at 5:00 PM
75° 5:00 PM
Clear night at 11:00 PM
76° Friday 11:00 PM
Clear night at 5:00 AM
65° 5:00 AM
Sunny at 11:00 AM
63° 11:00 AM
Sunny at 5:00 PM
77° 5:00 PM
Clear night at 11:00 PM
81° Saturday 11:00 PM
Partly cloudy night at 5:00 AM
70° 5:00 AM
Mostly cloudy at 11:00 AM
67° 11:00 AM
Mostly sunny at 5:00 PM
82° 5:00 PM
Clear night at 11:00 PM
84° Sunday 11:00 PM
Clear night at 5:00 AM
71° 5:00 AM
Sunny at 11:00 AM
68° 11:00 AM
Sunny at 5:00 PM
82° 5:00 PM
Clear night at 11:00 PM
83° Monday 11:00 PM

AIR QUALITY FORECAST

Air Quality Forecast for Lake Forest

Hourly forecast · Updated every 2 hours
Fair
Nearest forecast value 9:00 AM
PM2.5 Fine particles Good 5,5µg/m³

Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.

PM10 Particulate matter Fair 22,9µg/m³

Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.

O₃ Ozone Fair 80,9µg/m³

Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.

NO₂ Nitrogen dioxide Good 0,6µg/m³

A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.

Air quality is acceptable for most people.

UV & HEALTH

UV, Sun & Health Outlook in Lake Forest

Maximum daily UV Today, tomorrow and the following day show the maximum UV index forecast for each day.
0–2 Low 3–5 Moderate 6–7 High 8–10 Very high 11+ Extreme
Today UV 8,9Very high 🙂Fair
Tomorrow UV 8,8Very high 🙂Fair
Wednesday UV 8,6Very high 🙂Fair
Thursday UV 7,0High 🙂Fair
Friday UV 7,0High 🙂Fair
Saturday UV 7,0High Unavailable
Sunday UV 7,0High Unavailable
Hourly UV index today
9:00 AMUV 2,0 10:00 AMUV 4,2 11:00 AMUV 6,6 12:00 PMUV 8,4 1:00 PMUV 8,9 2:00 PMUV 7,9 3:00 PMUV 5,9 4:00 PMUV 3,5 5:00 PMUV 1,4 6:00 PMUV 0,4 7:00 PMUV 0,0
Today's weather health advice Open today's recommendations.

Very high UV risk

Use SPF 50+ sunscreen, a hat and sunglasses. Seek shade and limit exposure around midday.

Acceptable air quality

Air quality is acceptable for most people. Very sensitive people may want to reduce prolonged exertion.

Comfortable temperature conditions

Temperatures should feel comfortable for most people, with no particular heat or cold precautions needed.

Best in the morning or late in the day

For walking, running or cycling, prefer the early morning or late afternoon.

WIND OUTLOOK

Hourly Wind Forecast for Lake Forest

Vertical axis: mph · Horizontal axis: hours
Hourly wind speed Chart of sustained wind and maximum gusts in mph. Today 9:00 AM 10:00 AM 11:00 AM 12:00 PM Today 1:00 PM 2:00 PM 3:00 PM 4:00 PM Today 5:00 PM 6:00 PM 7:00 PM 8:00 PM Today 9:00 PM 10:00 PM 11:00 PM 12:00 AM Tomorrow 1:00 AM 2:00 AM 3:00 AM 4:00 AM Tomorrow 5:00 AM 6:00 AM 7:00 AM 8:00 AM Tomorrow 9:00 AM 10:00 AM 11:00 AM 12:00 PM Tomorrow 1:00 PM 2:00 PM 3:00 PM 4:00 PM Tomorrow 5:00 PM 6:00 PM 7:00 PM 8:00 PM Tomorrow 9:00 PM 10:00 PM 11:00 PM 12:00 AM Wednesday 1:00 AM 2:00 AM 3:00 AM 4:00 AM Wednesday 5:00 AM 6:00 AM 7:00 AM 8:00 AM Wednesday 9:00 AM 10:00 AM 11:00 AM 12:00 PM Wednesday 1:00 PM 2:00 PM 3:00 PM 4:00 PM Wednesday 5:00 PM 2:00 AM 5:00 AM 8:00 AM Thursday 11:00 AM 2:00 PM 5:00 PM 8:00 PM Thursday 11:00 PM 2:00 AM 5:00 AM 8:00 AM Friday 11:00 AM 2:00 PM 5:00 PM 8:00 PM Friday 11:00 PM 2:00 AM 5:00 AM 8:00 AM Saturday 11:00 AM 2:00 PM 5:00 PM 8:00 PM Saturday 11:00 PM 5:00 AM 11:00 AM 5:00 PM Sunday 11:00 PM 5:00 AM 11:00 AM 5:00 PM Monday 11:00 PM 5:00 AM 11:00 AM 5:00 PM Tuesday 11:00 PM 5:00 AM 11:00 AM 5:00 PM Wednesday 11:00 PM 5:00 AM 11:00 AM 5:00 PM Thursday 11:00 PM 5:00 AM 11:00 AM 5:00 PM Friday 11:00 PM 5:00 AM 11:00 AM 5:00 PM Saturday 11:00 PM 5:00 AM 11:00 AM 5:00 PM Sunday 11:00 PM 5:00 AM 11:00 AM 5:00 PM Monday 11:00 PM
Sustained wind Max gusts
NIGHT SKY · LAKE FOREST, CALIFORNIA

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 5:00 AM–6:00 AM.

100/100Best-hour score
BEST TIME TONIGHT 5:00 AM–6:00 AM Astronomical darkness: 8:22 PM–5:10 AM
Cloud cover 0% Real hourly forecast for the best viewing hour.
Moonlight 14% Waxing Crescent · Moon below the horizon at the best viewing hour.
Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 81° high at the best hour.
Estimated visible meteors 2–5/hour Local estimate after weather, moonlight and radiant-height adjustments.
Chance ≥1 meteor in 30 min81%
UPCOMING METEOR PERIODSStart, peak and end dates · weather should be checked closer to the peak.
SEP 5–SEP 21
September ε-PerseidsStart SEP 5 · Peak SEP 9 · End SEP 21 · ZHR 8 · 6% Moon at peak
ACTIVE NOW
SEP 20–NOV 20
Southern TauridsStart SEP 20 · Peak NOV 5 · End NOV 20 · ZHR 7 · 20% Moon at peak
UPCOMING
OCT 2–NOV 7
OrionidsStart OCT 2 · Peak OCT 21 · End NOV 7 · ZHR 20 · 77% Moon at peak
UPCOMING
OCT 20–DEC 10
Northern TauridsStart OCT 20 · Peak NOV 12 · End DEC 10 · ZHR 5 · 7% Moon at peak
UPCOMING

Experimental local observing estimate. Weather values come from the hourly forecast already used on this page. Moon position and astronomical darkness are calculated locally from time and coordinates. Meteor-shower ZHR describes ideal conditions and is not the number of meteors a person should expect to see locally.

Forecast data for Lake Forest were last refreshed today at 8:07 AM. The current forecast period extends through 16/09/2026 at 6:00 AM. Weather, air-quality and UV-index data are provided through WEATHER-INFO.COM. Forecasts are produced automatically from the latest available data and are subject to periodic technical checks. This service is intended for general weather information.