Observed 10:00 PM PDT at KVNY

Santa Susana, CA weather

Clear and 63°17°, 14°8° colder than a typical Oct 23.

Forecasts agree

Now 63°17°

Clear

Wind: 10 mph17 km/h; From the north. Gusts to 22 mph36 km/h around 10 AM
Dew point: 48°9°; Comfortable
UV tomorrow: 5Moderate; Moderate 10 AM–5 PM · peak 5
Air quality: 36Good; Main pollutant: Ozone
Pressure: 29.92 inHg1013 hPa; Rising slowly · +0.02 inHg+0.8 hPa in 3 h

None rain starting around 7:15 AM.

From forecast models

Next 48 hours

Good hours for

Low 55°13° tonight at 4 AM
Above 70°21° tomorrow by 11 AM
High 76°24° tomorrow at 2 PM
Below 70°21° tomorrow night after 6 PM

TonightDown to 55°13° by 4 AM · Clear
Tomorrow morningUp to 70°21° by 11 AM · Clear
Tomorrow afternoonNear 74°23° · Clear
Tomorrow nightDown to 57°14° by 4 AM · Clear
Sunday morningUp to 71°22° by 11 AM · Clear
Sunday afternoonUp to 80°27° by 2 PM · Partly cloudy
Sunday nightDown to 60°16° by 9 PM · 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
Fri 10p	Clear	60°16° (likely 55°13° to 60°16°)	60°16°	5%	10 mph16 km/h from N, gusts 9 mph14 km/h	93%	0%	0
Fri 11p	Clear	57°14° (likely 54°12° to 60°16°)	57°14°	0%	15 mph24 km/h from NNE, gusts 8 mph13 km/h	93%	0%	0
Sat 12a	Clear	57°14° (likely 54°12° to 60°16°)	57°14°	0%	15 mph24 km/h from NNE, gusts 9 mph14 km/h	90%	0%	0
Sat 1a	Clear	57°14° (likely 54°12° to 60°16°)	57°14°	0%	15 mph24 km/h from NNE, gusts 9 mph14 km/h	89%	0%	0
Sat 2a	Clear	57°14° (likely 54°12° to 61°16°)	57°14°	0%	10 mph16 km/h from NNE, gusts 10 mph16 km/h	86%	0%	0
Sat 3a	Clear	57°14° (likely 54°12° to 61°16°)	57°14°	0%	10 mph16 km/h from NNE, gusts 9 mph15 km/h	84%	0%	0
Sat 4a	Clear	55°13° (likely 54°12° to 60°16°)	55°13°	0%	10 mph16 km/h from NNE, gusts 8 mph13 km/h	84%	0%	0
Sat 5a	Clear	55°13° (likely 54°12° to 59°15°)	55°13°	0%	15 mph24 km/h from NNE, gusts 6 mph10 km/h	83%	0%	0
Sat 6a	Clear	56°13° (likely 54°12° to 58°14°)	56°13°	0%	15 mph24 km/h from NNE, gusts 8 mph13 km/h	83%	0%	0
Sat 7a	Sunny	57°14° (likely 54°12° to 58°14°)	57°14°	0%	15 mph24 km/h from NNE, gusts 8 mph13 km/h	81%	0%	0
Sat 8a	Sunny	60°16° (likely 56°13° to 60°16°)	60°16°	0%	20 mph32 km/h from NNE, gusts 11 mph18 km/h	79%	0%	0
Sat 9a	Sunny	64°18° (likely 61°16° to 66°19°)	64°18°	0%	20 mph32 km/h from NNE, gusts 22 mph35 km/h	70%	0%	1
Sat 10a	Sunny	67°19° (likely 65°18° to 70°21°)	67°19°	0%	20 mph32 km/h from NNE, gusts 22 mph36 km/h	56%	0%	3
Sat 11a	Sunny	70°21° (likely 68°20° to 72°22°)	70°21°	0%	20 mph32 km/h from NE, gusts 24 mph38 km/h	46%	0%	4
Sat 12p	Sunny	74°23° (likely 70°21° to 75°24°)	74°23°	0%	20 mph32 km/h from NE, gusts 24 mph39 km/h	40%	0%	5
Sat 1p	Sunny	75°24° (likely 72°22° to 77°25°)	75°24°	0%	20 mph32 km/h from NE, gusts 23 mph37 km/h	37%	0%	5
Sat 2p	Sunny	76°24° (likely 74°23° to 78°26°)	76°24°	0%	10 mph16 km/h from NNE, gusts 20 mph33 km/h	33%	0%	5
Sat 3p	Sunny	76°24° (likely 74°23° to 79°26°)	76°24°	0%	10 mph16 km/h from NNE, gusts 18 mph28 km/h	34%	0%	4
Sat 4p	Sunny	76°24° (likely 74°23° to 79°26°)	76°24°	0%	10 mph16 km/h from NNE, gusts 15 mph25 km/h	35%	0%	3
Sat 5p	Sunny	73°23° (likely 72°22° to 78°26°)	73°23°	0%	10 mph16 km/h from NNE, gusts 14 mph22 km/h	37%	0%	2
Sat 6p	Clear	66°19° (likely 66°19° to 73°23°)	66°19°	0%	10 mph16 km/h from NNE, gusts 10 mph16 km/h	50%	0%	0
Sat 7p	Clear	64°18° (likely 63°17° to 69°21°)	64°18°	0%	10 mph16 km/h from NNE, gusts 6 mph10 km/h	61%	0%	0
Sat 8p	Clear	62°17° (likely 59°15° to 67°19°)	62°17°	0%	10 mph16 km/h from NNW, gusts 4 mph6 km/h	68%	0%	0
Sat 9p	Clear	61°16° (likely 57°14° to 63°17°)	61°16°	0%	10 mph16 km/h from NNW, gusts 4 mph6 km/h	69%	0%	0
Sat 10p	Clear	61°16° (likely 55°13° to 63°17°)	61°16°	0%	10 mph16 km/h from NNW, gusts 3 mph5 km/h	71%	0%	0
Sat 11p	Clear	61°16° (likely 54°12° to 61°16°)	61°16°	0%	10 mph16 km/h from NNE, gusts 4 mph6 km/h	72%	0%	0
Sun 12a	Clear	60°16° (likely 53°12° to 62°17°)	60°16°	0%	10 mph16 km/h from NNE, gusts 4 mph7 km/h	71%	0%	0
Sun 1a	Clear	60°16° (likely 53°12° to 61°16°)	60°16°	0%	10 mph16 km/h from NNE, gusts 3 mph6 km/h	68%	0%	0
Sun 2a	Clear	60°16° (likely 52°11° to 60°16°)	60°16°	0%	10 mph16 km/h from NNE, gusts 4 mph7 km/h	66%	0%	0
Sun 3a	Clear	58°14° (likely 51°11° to 58°14°)	58°14°	0%	10 mph16 km/h from NNE, gusts 5 mph9 km/h	66%	1%	0
Sun 4a	Clear	57°14° (likely 51°11° to 57°14°)	57°14°	0%	10 mph16 km/h from NNE, gusts 6 mph10 km/h	66%	10%	0
Sun 5a	Clear	57°14° (likely 51°11° to 57°14°)	57°14°	0%	10 mph16 km/h from NNE, gusts 5 mph9 km/h	66%	3%	0
Sun 6a	Clear	55°13° (likely 51°11° to 55°13°)	55°13°	0%	10 mph16 km/h from NNE, gusts 5 mph9 km/h	66%	1%	0
Sun 7a	Sunny	54°12° (likely 50°10° to 55°13°)	54°12°	0%	10 mph16 km/h from NNE, gusts 6 mph10 km/h	67%	1%	0
Sun 8a	Sunny	59°15° (likely 52°11° to 59°15°)	59°15°	0%	5 mph8 km/h from NNE, gusts 6 mph10 km/h	65%	2%	0
Sun 9a	Sunny	63°17° (likely 59°15° to 63°17°)	63°17°	0%	5 mph8 km/h from NNE, gusts 6 mph9 km/h	59%	2%	1
Sun 10a	Sunny	68°20° (likely 67°19° to 68°20°)	68°20°	0%	5 mph8 km/h from NNE, gusts 4 mph7 km/h	50%	0%	3
Sun 11a	Sunny	71°22° (likely 71°22° to 72°22°)	71°22°	0%	5 mph8 km/h from ESE, gusts 3 mph6 km/h	42%	0%	4
Sun 12p	Sunny	74°23° (likely 74°23° to 75°24°)	74°23°	0%	5 mph8 km/h from ESE, gusts 4 mph7 km/h	38%	42%	5
Sun 1p	Sunny	77°25° (likely 76°24° to 78°26°)	77°25°	0%	5 mph8 km/h from ESE, gusts 5 mph8 km/h	37%	44%	5
Sun 2p	Sunny	80°27° (likely 76°24° to 80°27°)	80°27°	0%	5 mph8 km/h from WNW, gusts 6 mph10 km/h	37%	46%	5
Sun 3p	Sunny	79°26° (likely 75°24° to 80°27°)	79°26°	0%	5 mph8 km/h from WNW, gusts 7 mph11 km/h	38%	34%	4
Sun 4p	Sunny	78°26° (likely 75°24° to 78°26°)	78°26°	0%	5 mph8 km/h from WNW, gusts 10 mph16 km/h	41%	33%	3
Sun 5p	Sunny	74°23° (likely 72°22° to 76°24°)	74°23°	0%	5 mph8 km/h from WSW, gusts 12 mph19 km/h	46%	40%	1
Sun 6p	Clear	70°21° (likely 68°20° to 71°22°)	70°21°	0%	5 mph8 km/h from WSW, gusts 12 mph19 km/h	53%	14%	0
Sun 7p	Clear	66°19° (likely 64°18° to 67°19°)	66°19°	0%	5 mph8 km/h from WSW, gusts 9 mph14 km/h	62%	25%	0
Sun 8p	Mostly clear	63°17° (likely 58°14° to 64°18°)	63°17°	0%	5 mph8 km/h from NW, gusts 5 mph8 km/h	69%	51%	0
Sun 9p	Mostly clear	60°16° (likely 55°13° to 64°18°)	60°16°	0%	5 mph8 km/h from NW, gusts 4 mph7 km/h	72%	51%	0

Days ahead

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

Today, Oct 23. Cloudy. High 68°20°, low 55°13°. Typical 82°28° / 55°13°. Rain 0.03 in0.8 mm, 60% chance. Forecasts agree.
1. Evening
  6 PM–midnight
  Clear, 57°14°
  Dry
2. Overnight
  midnight–6 AM
  Clear, 55°13°
  Dry
Official NWS forecast
Tonight: Mostly clear, with a low around 55. North northeast wind 10 to 15 mph, with gusts as high as 25 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
67°19°–69°21°
Low, likely
52°11°–56°13°
Typical high / low
82°28° / 55°13°
Wind
13 mph20 km/h, gusts 25 mph40 km/h
UV peak
5
Tomorrow, Oct 24. Sunny. High 76°24°, low 54°12°. Typical 81°27° / 55°13°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 60°16°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 76°24°
  Dry
3. Evening
  6 PM–midnight
  Clear, 62°17°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 57°14°
  Dry
Official NWS forecast
Day: Sunny, with a high near 76. North northeast wind 10 to 20 mph, with gusts as high as 30 mph.
Night: Clear, with a low around 54. North wind around 10 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
75°24°–79°26°
Low, likely
53°12°–58°14°
Typical high / low
81°27° / 55°13°
Wind
17 mph28 km/h, gusts 32 mph52 km/h
UV peak
5
Sunday, Oct 25. Mostly sunny. High 80°27°, low 55°13°. Typical 81°27° / 55°13°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 59°15°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 80°27°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 63°17°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 54°12°
  Dry
Official NWS forecast
Day: Sunny, with a high near 80. North northwest wind 5 to 10 mph.
Night: Mostly clear, with a low around 55. North northwest wind around 5 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
76°24°–80°27°
Low, likely
50°10°–55°13°
Typical high / low
81°27° / 55°13°
Wind
11 mph17 km/h
UV peak
5
Monday, Oct 26. Mostly sunny. High 82°28°, low 56°13°. Typical 81°27° / 54°12°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 55°13°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 78°25°
  Dry
3. Evening
  6 PM–midnight
  Clear, 60°16°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 53°12°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 82.
Night: Mostly clear, with a low around 56.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
76°24°–82°28°
Low, likely
50°10°–56°13°
Typical high / low
81°27° / 54°12°
Wind
14 mph22 km/h
UV peak
5
Tuesday, Oct 27. Mostly sunny. High 79°26°, low 56°13°. Typical 81°27° / 54°12°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 53°12°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 74°24°
  Dry
3. Evening
  6 PM–midnight
  Clear, 60°16°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 53°12°
  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 56.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
72°22°–79°26°
Low, likely
47°8°–56°13°
Typical high / low
81°27° / 54°12°
Wind
7 mph11 km/h, gusts 20 mph31 km/h
UV peak
5
Wednesday, Oct 28. Partly sunny. High 78°26°, low 55°13°. Typical 81°27° / 54°12°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Mostly sunny, 54°12°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 73°23°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 59°15°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 53°12°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 78.
Night: Mostly cloudy, with a low around 55.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
69°21°–78°26°
Low, likely
49°9°–56°13°
Typical high / low
81°27° / 54°12°
Wind
7 mph11 km/h, gusts 15 mph23 km/h
UV peak
5
Thursday, Oct 29. Cloudy. High 74°23°, low 55°13°. Typical 80°27° / 54°12°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 54°12°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 69°21°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 60°15°
  Dry
4. Overnight
  midnight–6 AM
  Drizzle, 56°13°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 74.
Night: A slight chance of rain showers after 5am. Partly cloudy, with a low around 55.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
66°19°–74°23°
Low, likely
49°9°–56°13°
Typical high / low
80°27° / 54°12°
Wind
8 mph13 km/h, gusts 19 mph31 km/h
UV peak
4
Friday, Oct 30. Showers. High 71°22°, low 55°13°. Typical 80°27° / 54°12°. Rain 0.15 in3.8 mm, 20% chance. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 58°14°
  30% chance · 0.02 in0.5 mm
2. Afternoon
  noon–6 PM
  Cloudy, 65°18°
  30% chance · 0.07 in1.7 mm
3. Evening
  6 PM–midnight
  Partly cloudy, 58°15°
  30% chance · 0.04 in1.1 mm
4. Overnight
  midnight–6 AM
  Drizzle, 56°13°
  30% chance · 0.08 in2 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain showers. Mostly sunny, with a high near 71.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
62°17°–71°22°
Low, likely
51°11°–58°14°
Typical high / low
80°27° / 54°12°
Wind
9 mph15 km/h, gusts 23 mph37 km/h
UV peak
3
Saturday, Oct 31. Drizzle. High 66°19°, low 53°12°. Typical 80°27° / 53°12°. Rain 0.22 in5.6 mm, 40% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Drizzle, 56°14°
  30% chance · 0.07 in1.7 mm
2. Afternoon
  noon–6 PM
  Mostly sunny, 67°19°
  40% chance · 0.1 in2.4 mm
3. Evening
  6 PM–midnight
  Partly cloudy, 58°14°
  40% chance
4. Overnight
  midnight–6 AM
  Mostly clear, 52°11°
  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.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
62°17°–71°22°
Low, likely
49°9°–57°14°
Typical high / low
80°27° / 53°12°
Wind
11 mph17 km/h, gusts 22 mph35 km/h
UV peak
5
Sunday, Nov 1. Cloudy. High 71°22°, low 50°10°. Typical 80°27° / 53°12°. Rain 0.09 in2.3 mm, 40% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 54°12°
  40% chance
2. Afternoon
  noon–6 PM
  Partly sunny, 71°22°
  40% chance · 0.05 in1.4 mm
3. Evening
  6 PM–midnight
  Cloudy, 61°16°
  40% chance · 0.04 in1.1 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
67°19°–80°27°
Low, likely
40°4°–57°14°
Typical high / low
80°27° / 53°12°
Wind
9 mph14 km/h, gusts 17 mph27 km/h
UV peak
5

10 days15 days30 days

The outlook

Today
Dry, high 68°, low 55°.
Tomorrow
Dry, high 76°, low 54°, warming up.
Sunday
Dry, high 80°, low 55°, warming up.
Rest of week
Highs 66–82°; chance of precipitation on Saturday.

Want the meteorologists’ reasoning? Read the NWS forecast discussion (LOX) (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 Clara River (CA) near Piru

11 mi

Below flood stage

Level: 1.6 ft
Flow: 66 cfs

Forecast peak 1.6 ft Fri 10 PM

Reading from Fri 8:15 PM · NWS gauge page

Arroyo Simi above White Oak

0.7 mi

Below flood stage

Level: 0.5 ft

Reading from Fri 9 PM · NWS gauge page

Arroyo Simi at Stow

1.4 mi

Below flood stage

Level: 1.0 ft

Reading from Fri 9 PM · NWS gauge page

Arroyo Simi at Royal Ave.

4.1 mi

Below flood stage

Level: 74.7 ft

Reading from Fri 9 PM · NWS gauge page

For your home

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

Heating this week

This week 7Typical 0

Heating degree days, base 65°F

Comfort

Dry air outside (dew point 48°F).

Open the windows?

Sat, 8:00 AM–2:00 AM

Good stretch to open the windows.

Is this typical?

Van Nuys Airport · official normals 1991–2020 · records 1949–2026

Oct 23, today vs a typical year

Today’s expected high is 14°8° colder than typical.

Last 7 days vs normal

On average 0° warmer than normal (daily mean temperature).

+6°+3°SunOct 18
+5°+3°MonOct 19
+2°+1°TueOct 20
−5°−3°WedOct 21
−5°−3°ThuOct 22
—FriOct 23
—SatOct 24

Santa Susana weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 11 h 4 min; Losing 1 min 53 s a day; shortest Dec 21, 1 h 12 min less
Golden hour: 5:36–6:26 PM; Morning 6:51–7:41 AM
Blue hour: 6:26–6:36 PM; Morning 6:41–6:51 AM; first light 6:41 AM

Stars tonight? Good

Clear 10:24 PM–6:42 AM; moon 96% lit, sets 5:30 AM.

Moon

Waxing gibbous

95% lit · growing

Today: sets 4:26 AM · rises 4:39 PM
Full moon: Oct 25
New moon: Nov 8

Looking northeast from Santa Susana. The highest point on the skyline is about 2,600 ft, 4 mi away.Skyline from USGS elevation data, heights drawn up to 3.5× taller. Sky, sun and moon as they are now.

Santa Susana, CA weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Sunday

Rest of week

What changed since yesterday

Radar

Rivers

Santa Clara River (CA) near Piru

Arroyo Simi above White Oak

Arroyo Simi at Stow

Arroyo Simi at Royal Ave.

For your home

Heating this week

Comfort

Open the windows?

Is this typical?

Oct 23, today vs a typical year

Last 7 days vs normal

Sun & moon

Sun

Stars tonight? Good

Moon