Model estimate for 4:00 AM PDT (no recent station report)

Lake Forest, CA weather

Clear and 57°14°.

Mostly agree

Now 57°14°

Clear

Wind: Calm; Up to 5 mph8 km/h through 4 PM
Dew point: 54°12°; Comfortable
Humidity: 88%; Air 57°14°, dew point 54°12° · fog or dew likely
UV index: 0Low; Moderate 11 AM–4 PM · peak 5
Air quality: 32Good; Main pollutant: PM2.5 (fine particles)

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

Low 56°13° today at 6 AM
Above 70°21° today by 11 AM
High 77°25° today at 3 PM
Below 70°21° tonight after 7 PM

TonightNear 57°14° · Clear
This morningUp to 70°21° by 11 AM · Clear
This afternoonUp to 77°25° by 3 PM · Clear
TonightDown to 59°15° by 3 AM · Clear
Tomorrow morningUp to 73°23° by 11 AM · Clear
Tomorrow afternoonUp to 79°26° by 2 PM · Partly cloudy
Tomorrow nightDown to 64°18° by 2 AM · Partly cloudy

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Sat 4a	Clear	57°14° (likely 55°13° to 58°14°)	57°14°	0%	0 mph0 km/h, gusts 6 mph9 km/h	88%	0%	0
Sat 5a	Clear	57°14° (likely 54°12° to 58°14°)	57°14°	0%	0 mph0 km/h, gusts 6 mph9 km/h	86%	6%	0
Sat 6a	Clear	56°13° (likely 55°13° to 58°14°)	57°14°	0%	0 mph0 km/h, gusts 6 mph10 km/h	88%	2%	0
Sat 7a	Sunny	56°13° (likely 55°13° to 58°14°)	56°13°	0%	0 mph0 km/h, gusts 6 mph10 km/h	90%	1%	0
Sat 8a	Sunny	58°14° (likely 56°13° to 60°16°)	58°14°	0%	5 mph8 km/h from E, gusts 6 mph10 km/h	89%	4%	0
Sat 9a	Sunny	63°17° (likely 61°16° to 65°18°)	63°17°	0%	0 mph0 km/h, gusts 7 mph11 km/h	81%	0%	1
Sat 10a	Sunny	67°19° (likely 66°19° to 69°21°)	67°19°	0%	0 mph0 km/h, gusts 10 mph16 km/h	67%	0%	2
Sat 11a	Sunny	70°21° (likely 69°21° to 71°22°)	70°21°	0%	5 mph8 km/h from NW, gusts 10 mph16 km/h	59%	0%	4
Sat 12p	Sunny	73°23° (likely 71°22° to 74°23°)	73°23°	0%	5 mph8 km/h from N, gusts 11 mph17 km/h	53%	4%	5
Sat 1p	Sunny	76°24° (likely 73°23° to 78°26°)	76°24°	0%	5 mph8 km/h from N, gusts 10 mph16 km/h	49%	8%	5
Sat 2p	Sunny	76°24° (likely 73°23° to 76°24°)	76°24°	0%	5 mph8 km/h from W, gusts 10 mph17 km/h	48%	7%	5
Sat 3p	Sunny	77°25° (likely 72°22° to 77°25°)	77°25°	0%	5 mph8 km/h from W, gusts 10 mph15 km/h	47%	7%	3
Sat 4p	Sunny	76°24° (likely 71°22° to 76°24°)	76°24°	0%	5 mph8 km/h from W, gusts 10 mph16 km/h	49%	2%	2
Sat 5p	Sunny	74°23° (likely 69°21° to 74°23°)	74°23°	0%	5 mph8 km/h from W, gusts 8 mph14 km/h	54%	0%	2
Sat 6p	Clear	71°22° (likely 67°19° to 71°22°)	71°22°	0%	5 mph8 km/h from W, gusts 7 mph11 km/h	62%	0%	0
Sat 7p	Clear	67°19° (likely 63°17° to 67°19°)	67°19°	0%	0 mph0 km/h, gusts 3 mph5 km/h	69%	0%	0
Sat 8p	Clear	65°18° (likely 61°16° to 66°19°)	65°18°	0%	0 mph0 km/h, gusts 4 mph6 km/h	75%	0%	0
Sat 9p	Clear	63°17° (likely 60°16° to 64°18°)	63°17°	0%	0 mph0 km/h, gusts 4 mph6 km/h	76%	0%	0
Sat 10p	Clear	62°17° (likely 60°16° to 64°18°)	62°17°	0%	0 mph0 km/h, gusts 3 mph5 km/h	76%	0%	0
Sat 11p	Clear	61°16° (likely 60°16° to 63°17°)	61°16°	0%	5 mph8 km/h from E, gusts 4 mph7 km/h	76%	0%	0
Sun 12a	Clear	61°16° (likely 60°16° to 61°16°)	61°16°	0%	5 mph8 km/h from SE, gusts 5 mph8 km/h	78%	0%	0
Sun 1a	Clear	60°16° (likely 59°15° to 61°16°)	60°16°	0%	5 mph8 km/h from SE, gusts 5 mph8 km/h	78%	0%	0
Sun 2a	Clear	60°16° (likely 58°14° to 60°16°)	60°16°	0%	5 mph8 km/h from E, gusts 6 mph9 km/h	79%	0%	0
Sun 3a	Clear	59°15° (likely 58°14° to 60°16°)	59°15°	0%	5 mph8 km/h from E, gusts 6 mph9 km/h	77%	0%	0
Sun 4a	Clear	59°15° (likely 57°14° to 60°16°)	59°15°	0%	5 mph8 km/h from E, gusts 6 mph10 km/h	75%	0%	0
Sun 5a	Clear	59°15° (likely 56°13° to 60°16°)	59°15°	0%	5 mph8 km/h from E, gusts 6 mph9 km/h	74%	0%	0
Sun 6a	Clear	58°14° (likely 56°13° to 60°16°)	58°14°	0%	5 mph8 km/h from E, gusts 6 mph9 km/h	76%	0%	0
Sun 7a	Sunny	58°14° (likely 56°13° to 60°16°)	58°14°	0%	0 mph0 km/h, gusts 5 mph8 km/h	78%	0%	0
Sun 8a	Sunny	60°16° (likely 59°15° to 61°16°)	60°16°	0%	0 mph0 km/h, gusts 7 mph11 km/h	75%	0%	0
Sun 9a	Sunny	66°19° (likely 65°18° to 67°19°)	66°19°	0%	0 mph0 km/h, gusts 5 mph9 km/h	64%	0%	1
Sun 10a	Sunny	70°21° (likely 69°21° to 73°23°)	70°21°	0%	0 mph0 km/h, gusts 3 mph5 km/h	56%	1%	3
Sun 11a	Sunny	73°23° (likely 72°22° to 75°24°)	73°23°	0%	0 mph0 km/h, gusts 4 mph6 km/h	52%	0%	4
Sun 12p	Sunny	75°24° (likely 74°23° to 76°24°)	75°24°	0%	0 mph0 km/h, gusts 6 mph9 km/h	49%	0%	5
Sun 1p	Sunny	78°26° (likely 75°24° to 78°26°)	78°26°	0%	0 mph0 km/h, gusts 7 mph11 km/h	45%	0%	5
Sun 2p	Sunny	79°26° (likely 75°24° to 79°26°)	79°26°	0%	0 mph0 km/h, gusts 8 mph13 km/h	43%	40%	5
Sun 3p	Sunny	78°26° (likely 74°23° to 78°26°)	78°26°	0%	0 mph0 km/h, gusts 10 mph16 km/h	44%	41%	4
Sun 4p	Sunny	79°26° (likely 73°23° to 79°26°)	79°26°	0%	5 mph8 km/h from W, gusts 10 mph16 km/h	44%	42%	3
Sun 5p	Sunny	77°25° (likely 72°22° to 77°25°)	77°25°	0%	0 mph0 km/h, gusts 9 mph15 km/h	46%	43%	1
Sun 6p	Clear	74°23° (likely 70°21° to 74°23°)	75°24°	0%	0 mph0 km/h, gusts 7 mph11 km/h	50%	42%	0
Sun 7p	Partly cloudy	74°23° (likely 65°18° to 74°23°)	74°23°	0%	0 mph0 km/h, gusts 5 mph8 km/h	51%	46%	0
Sun 8p	Partly cloudy	69°21° (likely 63°17° to 69°21°)	69°21°	0%	0 mph0 km/h, gusts 5 mph8 km/h	60%	54%	0
Sun 9p	Partly cloudy	74°23° (likely 62°17° to 74°23°)	74°23°	0%	0 mph0 km/h, gusts 6 mph9 km/h	50%	59%	0
Sun 10p	Partly cloudy	74°23° (likely 62°17° to 74°23°)	74°23°	0%	0 mph0 km/h, gusts 7 mph11 km/h	49%	69%	0
Sun 11p	Cloudy	66°19° (likely 61°16° to 66°19°)	66°19°	0%	0 mph0 km/h, gusts 6 mph10 km/h	61%	69%	0
Mon 12a	Mostly clear	74°23° (likely 60°16° to 74°23°)	74°23°	0%	0 mph0 km/h, gusts 5 mph8 km/h	46%	65%	0
Mon 1a	Mostly clear	73°23° (likely 59°15° to 73°23°)	73°23°	0%	0 mph0 km/h, gusts 5 mph7 km/h	47%	24%	0
Mon 2a	Clear	64°18° (likely 59°15° to 66°19°)	65°18°	0%	0 mph0 km/h, gusts 4 mph7 km/h	61%	6%	0
Mon 3a	Clear	72°22° (likely 58°14° to 72°22°)	72°22°	0%	0 mph0 km/h, gusts 5 mph8 km/h	46%	0%	0

Days ahead

Shaded: typical range for these dates (1991–2020)

Today, Oct 24. Sunny. High 77°25°, low 56°13°. Typical 78°26° / 58°14°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 58°14°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 77°25°
  Dry
3. Evening
  6 PM–midnight
  Clear, 65°18°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 59°15°
  Dry
Official NWS forecast
Today: Sunny, with a high near 77. Northwest wind 0 to 5 mph.
Tonight: Clear, with a low around 56. North wind around 0 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
73°23°–78°26°
Low, likely
54°12°–58°14°
Typical high / low
78°26° / 58°14°
Wind
10 mph15 km/h, gusts 16 mph25 km/h
UV peak
6
Tomorrow, Oct 25. Mostly sunny. High 79°26°, low 60°16°. Typical 78°26° / 58°14°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 60°16°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 79°26°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 69°21°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 61°16°
  Dry
Official NWS forecast
Day: Sunny, with a high near 79. Southwest wind 0 to 5 mph.
Night: Mostly clear, with a low around 60. North wind around 0 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
75°24°–79°26°
Low, likely
56°13°–60°16°
Typical high / low
78°26° / 58°14°
Wind
8 mph12 km/h, gusts 15 mph24 km/h
UV peak
5
Monday, Oct 26. Mostly sunny. High 80°27°, low 57°14°. Typical 78°26° / 58°14°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 63°17°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 78°26°
  Dry
3. Evening
  6 PM–midnight
  Clear, 65°18°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 58°14°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 80.
Night: Mostly clear, with a low around 57.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
76°24°–80°27°
Low, likely
57°14°–63°17°
Typical high / low
78°26° / 58°14°
Wind
9 mph15 km/h, gusts 16 mph25 km/h
UV peak
5
Tuesday, Oct 27. Mostly sunny. High 79°26°, low 58°14°. Typical 78°26° / 57°14°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 59°15°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 75°24°
  Dry
3. Evening
  6 PM–midnight
  Clear, 63°17°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 57°14°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 79.
Night: Partly cloudy, with a low around 58.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
72°22°–79°26°
Low, likely
54°12°–60°16°
Typical high / low
78°26° / 57°14°
Wind
9 mph14 km/h, gusts 14 mph22 km/h
UV peak
5
Wednesday, Oct 28. Cloudy. High 77°25°, low 58°14°. Typical 78°26° / 57°14°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Partly sunny, 58°14°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 73°23°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 62°17°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 59°15°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 77.
Night: Mostly cloudy, with a low around 58.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
71°22°–77°25°
Low, likely
54°12°–59°15°
Typical high / low
78°26° / 57°14°
Wind
8 mph13 km/h, gusts 13 mph22 km/h
UV peak
5
Thursday, Oct 29. Cloudy. High 73°23°, low 57°14°. Typical 78°26° / 57°14°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 60°16°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 69°21°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 63°17°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 59°15°
  20% chance
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 73.
Night: A chance of rain showers after 11pm. Mostly cloudy, with a low around 57.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
67°19°–73°23°
Low, likely
57°14°–60°16°
Typical high / low
78°26° / 57°14°
Wind
8 mph13 km/h, gusts 19 mph30 km/h
UV peak
4
Friday, Oct 30. Drizzle. High 70°21°, low 58°14°. Typical 78°26° / 57°14°. Rain 0.08 in2 mm, 30% chance. Mostly agree.
1. Morning
  6 AM–noon
  Drizzle, 59°15°
  30% chance · 0.01 in0.3 mm
2. Afternoon
  noon–6 PM
  Drizzle, 66°19°
  30% chance · 0.02 in0.4 mm
3. Evening
  6 PM–midnight
  Cloudy, 62°16°
  30% chance
4. Overnight
  midnight–6 AM
  Partly cloudy, 58°15°
  30% chance · 0.05 in1.1 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain showers. Partly sunny, with a high near 70.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
64°18°–70°21°
Low, likely
55°13°–60°16°
Typical high / low
78°26° / 57°14°
Wind
8 mph13 km/h, gusts 15 mph24 km/h
UV peak
2
Saturday, Oct 31. Cloudy. High 66°19°, low 56°13°. Typical 78°26° / 56°13°. Rain 0.09 in2.3 mm, 40% chance. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 59°15°
  30% chance
2. Afternoon
  noon–6 PM
  Cloudy, 67°20°
  30% chance
3. Evening
  6 PM–midnight
  Cloudy, 60°16°
  40% chance
4. Overnight
  midnight–6 AM
  Cloudy, 55°13°
  40% chance
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
64°18°–70°21°
Low, likely
54°12°–57°14°
Typical high / low
78°26° / 56°13°
Wind
9 mph14 km/h, gusts 19 mph30 km/h
UV peak
4
Sunday, Nov 1. Cloudy. High 71°22°, low 54°12°. Typical 77°25° / 56°13°. Rain 0.07 in1.8 mm, 40% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Partly sunny, 58°14°
  40% chance
2. Afternoon
  noon–6 PM
  Cloudy, 73°23°
  30% chance
3. Evening
  6 PM–midnight
  Clear, 64°18°
  40% chance
4. Overnight
  midnight–6 AM
  Clear, 55°13°
  30% chance · 0.11 in2.8 mm
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
64°18°–81°27°
Low, likely
52°11°–60°16°
Typical high / low
77°25° / 56°13°
Wind
8 mph12 km/h, gusts 20 mph32 km/h
UV peak
4
Monday, Nov 2. Cloudy. High 68°20°, low 54°12°. Typical 77°25° / 56°13°. Rain 1.1 in28 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Showers, 60°15°
  30% chance · 0.75 in19 mm
2. Afternoon
  noon–6 PM
  Showers, 67°20°
  20% chance · 0.21 in5.3 mm
3. Evening
  6 PM–midnight
  Drizzle, 59°15°
  Dry
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
61°16°–72°22°
Low, likely
48°9°–60°16°
Typical high / low
77°25° / 56°13°
Wind
10 mph17 km/h, gusts 15 mph25 km/h

10 days15 days30 days

The outlook

Today
Dry, high 77°, low 56°.
Tomorrow
Dry, high 79°, low 60°.
Monday
Dry, high 80°, low 57°.
Rest of week
Mostly dry, highs 66–79°.

Want the meteorologists’ reasoning? Read the NWS forecast discussion (SGX) (opens in a new tab)

What changed since yesterday

No meaningful changes from yesterday’s forecast.

Radar

Radar data: NOAA MRMS, rendered by forecast.blue

Radar loads when scrolled into view

Full-screen radar

Rivers

NOAA river gauges within 25 mi

Santa Ana River at Santa Ana

15 mi

Below flood stage

Level: 2.7 ft
Flow: 178 cfs

Reading from Sat 3:45 AM · NWS gauge page

Temescal Creek near Corona

17 mi

Level: 2.2 ft

Reading from Sat 3:15 AM · NWS gauge page

For your home

What this week’s weather means for heating, cooling, pipes and fresh air.

Cooling this week

About 49% less cooling than a typical week.

This week 10Typical 19

Cooling degree days, base 65°F

Comfort

Dry air outside (dew point 54°F).

Open the windows?

Today, 9:00 AM–2:00 AM

Good stretch to open the windows (air quality forecast not available for part of this window).

Is this typical?

SANTA ANA FIRE STATION · official normals 1991–2020 · records 1916–2026

Oct 24, today vs a typical year

Today’s expected high is about typical for the date.

Last 7 days vs normal

—SunOct 18
—MonOct 19
—TueOct 20
—WedOct 21
—ThuOct 22
—FriOct 23
—SatOct 24

Lake Forest weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 11 h 3 min; Losing 1 min 57 s a day; shortest Dec 21, 1 h 8 min less
Golden hour: 5:32–6:21 PM; Morning 6:47–7:37 AM
Blue hour: 6:21–6:31 PM; Morning 6:37–6:47 AM; first light 6:37 AM

Stars tonight? Fair

Clear 4:52–6:37 AM, but the moon is 96% lit and up.

Moon

Waxing gibbous

96% lit · growing

Today: sets 5:25 AM · rises 5:04 PM
Full moon: Oct 25
New moon: Nov 8

Looking northeast from Lake Forest. The highest point on the skyline is about 10,000 ft, 44 mi away.Skyline from USGS elevation data, heights drawn up to 4× taller. Sky, sun and moon as they are now.