Observed 3:55 AM PDT at KSLI

Fountain Valley, CA weather

Overcast and 62°17°.

Mostly agree

Now 62°17°

Cloudy

Wind: 5 mph8 km/h; From the east. Up to 10 mph16 km/h through 5 PM
Dew point: 58°14°; A little sticky
UV index: 0Low; Moderate 11 AM–4 PM · peak 4
Air today: 37Good; EPA forecast · Ozone
Pressure: 29.94 inHg1014 hPa; Steady over the last 3 h

None rain now, through the next 2 hours.

From forecast models

Next 48 hours

Good hours for

High 69°21° today at 2 PM

This morningUp to 67°19° by 11 AM · rain chance 10% · Partly cloudy
This afternoonNear 69°21° · rain chance 10% · Clear
TonightDown to 58°14° by 4 AM · Clear
Tomorrow morningUp to 70°21° by 11 AM · Clear
Tomorrow afternoonNear 73°23° · Clear
Tomorrow nightDown to 64°18° by 2 AM · Clear

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Fri 5a	Partly cloudy	57°14° (likely 57°14° to 62°17°)	57°14°	10%	0 mph0 km/h, gusts 5 mph9 km/h	100%	59%	0
Fri 6a	Partly cloudy	57°14° (likely 57°14° to 62°17°)	57°14°	10%	0 mph0 km/h, gusts 8 mph12 km/h	100%	38%	0
Fri 7a	Partly sunny	57°14° (likely 57°14° to 62°17°)	57°14°	10%	0 mph0 km/h, gusts 5 mph8 km/h	100%	19%	0
Fri 8a	Partly sunny	59°15° (likely 59°15° to 62°17°)	59°15°	10%	0 mph0 km/h, gusts 4 mph7 km/h	100%	21%	0
Fri 9a	Sunny	63°17° (likely 61°16° to 64°18°)	63°17°	10%	0 mph0 km/h, gusts 3 mph6 km/h	92%	10%	1
Fri 10a	Sunny	65°18° (likely 65°18° to 67°19°)	65°18°	10%	0 mph0 km/h, gusts 4 mph6 km/h	85%	11%	2
Fri 11a	Mostly sunny	67°19° (likely 67°19° to 70°21°)	67°19°	10%	0 mph0 km/h, gusts 5 mph9 km/h	80%	23%	3
Fri 12p	Mostly sunny	68°20° (likely 68°20° to 72°22°)	68°20°	10%	5 mph8 km/h from SW, gusts 6 mph10 km/h	78%	28%	3
Fri 1p	Mostly sunny	68°20° (likely 68°20° to 73°23°)	68°20°	10%	5 mph8 km/h from SW, gusts 7 mph12 km/h	75%	33%	4
Fri 2p	Mostly sunny	69°21° (likely 69°21° to 73°23°)	69°21°	10%	5 mph8 km/h from SW, gusts 11 mph18 km/h	72%	29%	4
Fri 3p	Sunny	69°21° (likely 69°21° to 72°22°)	69°21°	10%	10 mph16 km/h from SW, gusts 13 mph21 km/h	73%	18%	3
Fri 4p	Sunny	69°21° (likely 69°21° to 72°22°)	69°21°	10%	10 mph16 km/h from SW, gusts 13 mph22 km/h	73%	18%	1
Fri 5p	Sunny	69°21° (likely 68°20° to 70°21°)	69°21°	5%	10 mph16 km/h from W, gusts 13 mph21 km/h	72%	11%	2
Fri 6p	Clear	67°19° (likely 67°19° to 69°21°)	67°19°	5%	5 mph8 km/h from W, gusts 12 mph19 km/h	77%	13%	0
Fri 7p	Mostly clear	65°18° (likely 65°18° to 68°20°)	65°18°	5%	5 mph8 km/h from SW, gusts 9 mph14 km/h	82%	54%	0
Fri 8p	Drizzle	64°18° (likely 63°17° to 68°20°)	64°18°	5%	5 mph8 km/h from SW, gusts 6 mph10 km/h	84%	69%	0
Fri 9p	Mostly clear	63°17° (likely 63°17° to 66°19°)	63°17°	5%	0 mph0 km/h, gusts 4 mph7 km/h	88%	67%	0
Fri 10p	Clear	62°17° (likely 62°17° to 65°18°)	62°17°	5%	0 mph0 km/h, gusts 4 mph6 km/h	92%	16%	0
Fri 11p	Clear	61°16° (likely 60°16° to 64°18°)	61°16°	0%	0 mph0 km/h, gusts 4 mph7 km/h	93%	6%	0
Sat 12a	Clear	60°16° (likely 59°15° to 63°17°)	61°16°	0%	0 mph0 km/h, gusts 5 mph8 km/h	97%	0%	0
Sat 1a	Clear	60°16° (likely 58°14° to 62°17°)	60°16°	0%	0 mph0 km/h, gusts 5 mph8 km/h	95%	8%	0
Sat 2a	Clear	60°16° (likely 57°14° to 62°17°)	60°16°	0%	0 mph0 km/h, gusts 6 mph9 km/h	95%	11%	0
Sat 3a	Clear	59°15° (likely 57°14° to 61°16°)	59°15°	0%	0 mph0 km/h, gusts 5 mph8 km/h	96%	8%	0
Sat 4a	Clear	58°14° (likely 56°13° to 60°16°)	58°14°	0%	0 mph0 km/h, gusts 6 mph10 km/h	95%	9%	0
Sat 5a	Clear	58°14° (likely 56°13° to 60°16°)	58°14°	0%	0 mph0 km/h, gusts 6 mph9 km/h	96%	10%	0
Sat 6a	Clear	58°14° (likely 55°13° to 60°16°)	58°14°	0%	0 mph0 km/h, gusts 6 mph9 km/h	97%	5%	0
Sat 7a	Sunny	57°14° (likely 54°12° to 60°16°)	57°14°	0%	0 mph0 km/h, gusts 6 mph10 km/h	99%	5%	0
Sat 8a	Sunny	59°15° (likely 54°12° to 61°16°)	59°15°	0%	0 mph0 km/h, gusts 7 mph11 km/h	98%	4%	0
Sat 9a	Sunny	64°18° (likely 58°14° to 64°18°)	64°18°	0%	0 mph0 km/h, gusts 5 mph8 km/h	82%	3%	1
Sat 10a	Sunny	67°19° (likely 64°18° to 68°20°)	67°19°	0%	0 mph0 km/h, gusts 4 mph6 km/h	74%	2%	3
Sat 11a	Sunny	70°21° (likely 68°20° to 71°22°)	70°21°	0%	0 mph0 km/h, gusts 3 mph5 km/h	66%	3%	4
Sat 12p	Sunny	72°22° (likely 71°22° to 74°23°)	72°22°	0%	5 mph8 km/h from W, gusts 5 mph8 km/h	63%	1%	5
Sat 1p	Sunny	73°23° (likely 72°22° to 76°24°)	73°23°	0%	5 mph8 km/h from W, gusts 8 mph12 km/h	60%	0%	5
Sat 2p	Sunny	75°24° (likely 73°23° to 78°26°)	75°24°	0%	10 mph16 km/h from W, gusts 9 mph15 km/h	58%	0%	5
Sat 3p	Sunny	74°23° (likely 73°23° to 77°25°)	74°23°	0%	10 mph16 km/h from W, gusts 11 mph17 km/h	60%	0%	4
Sat 4p	Sunny	75°24° (likely 72°22° to 77°25°)	75°24°	0%	10 mph16 km/h from W, gusts 11 mph18 km/h	59%	0%	3
Sat 5p	Sunny	74°23° (likely 71°22° to 74°23°)	74°23°	0%	10 mph16 km/h from W, gusts 12 mph19 km/h	61%	0%	2
Sat 6p	Clear	72°22° (likely 69°21° to 72°22°)	72°22°	0%	10 mph16 km/h from W, gusts 12 mph19 km/h	65%	0%	0
Sat 7p	Clear	72°22° (likely 67°19° to 72°22°)	73°23°	0%	5 mph8 km/h from W, gusts 9 mph15 km/h	64%	0%	0
Sat 8p	Clear	69°21° (likely 65°18° to 69°21°)	69°21°	0%	5 mph8 km/h from W, gusts 5 mph8 km/h	71%	0%	0
Sat 9p	Clear	71°22° (likely 63°17° to 71°22°)	71°22°	0%	0 mph0 km/h, gusts 4 mph6 km/h	65%	0%	0
Sat 10p	Clear	71°22° (likely 62°17° to 71°22°)	71°22°	0%	0 mph0 km/h, gusts 4 mph6 km/h	66%	1%	0
Sat 11p	Clear	66°19° (likely 60°16° to 68°20°)	66°19°	0%	0 mph0 km/h, gusts 4 mph6 km/h	76%	1%	0
Sun 12a	Clear	70°21° (likely 58°14° to 71°22°)	70°21°	0%	0 mph0 km/h, gusts 3 mph5 km/h	67%	0%	0
Sun 1a	Clear	70°21° (likely 56°13° to 70°21°)	70°21°	0%	5 mph8 km/h from SE, gusts 4 mph6 km/h	67%	0%	0
Sun 2a	Clear	64°18° (likely 55°13° to 70°21°)	64°18°	0%	5 mph8 km/h from E, gusts 5 mph7 km/h	81%	0%	0
Sun 3a	Clear	68°20° (likely 54°12° to 70°21°)	68°20°	0%	5 mph8 km/h from E, gusts 4 mph7 km/h	68%	0%	0
Sun 4a	Clear	68°20° (likely 53°12° to 70°21°)	68°20°	0%	5 mph8 km/h from E, gusts 4 mph6 km/h	66%	1%	0

Days ahead

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

Today, Oct 23. Drizzle. High 70°21°, low 57°14°. Typical 77°25° / 58°14°. Rain 0.04 in1 mm, 10% chance. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 59°15°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 69°21°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 64°18°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 58°14°
  Dry
Official NWS forecast
Today: Mostly sunny, with a high near 70. Northwest wind 0 to 10 mph.
Tonight: Partly cloudy, with a low around 57. Northeast wind around 0 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
69°21°–73°23°
Low, likely
57°14°–62°17°
Typical high / low
77°25° / 58°14°
Wind
11 mph17 km/h, gusts 16 mph26 km/h
UV peak
5
Tomorrow, Oct 24. Sunny. High 75°24°, low 59°15°. Typical 77°25° / 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, 69°21°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 60°16°
  Dry
Official NWS forecast
Day: Sunny, with a high near 75. North wind 0 to 10 mph.
Night: Mostly clear, with a low around 59. Southeast wind 0 to 10 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
73°23°–78°26°
Low, likely
54°12°–59°15°
Typical high / low
77°25° / 57°14°
Wind
9 mph14 km/h, gusts 16 mph26 km/h
UV peak
5
Sunday, Oct 25. Mostly sunny. High 79°26°, low 60°16°. Typical 77°25° / 57°14°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 60°15°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 77°25°
  Dry
3. Evening
  6 PM–midnight
  Clear, 70°21°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 60°16°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 79.
Night: Mostly clear, with a low around 60.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
74°23°–80°27°
Low, likely
53°12°–66°19°
Typical high / low
77°25° / 57°14°
Wind
9 mph14 km/h, gusts 16 mph26 km/h
UV peak
5
Monday, Oct 26. Mostly sunny. High 80°27°, low 59°15°. Typical 76°24° / 57°14°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 60°15°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 79°26°
  Dry
3. Evening
  6 PM–midnight
  Clear, 69°20°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 60°15°
  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 59.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
75°24°–81°27°
Low, likely
53°12°–67°19°
Typical high / low
76°24° / 57°14°
Wind
13 mph21 km/h, gusts 18 mph29 km/h
UV peak
5
Tuesday, Oct 27. Partly sunny. High 77°25°, low 57°14°. Typical 76°24° / 57°14°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 60°16°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 74°24°
  Dry
3. Evening
  6 PM–midnight
  Clear, 67°19°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 60°15°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 77.
Night: Partly cloudy, with a low around 57.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
71°22°–77°25°
Low, likely
54°12°–65°18°
Typical high / low
76°24° / 57°14°
Wind
11 mph18 km/h
UV peak
5
Wednesday, Oct 28. Mostly cloudy. High 74°23°, low 58°14°. Typical 76°24° / 56°13°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 59°15°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 74°23°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 67°19°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 60°16°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 74.
Night: Mostly cloudy, with a low around 58.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
70°21°–77°25°
Low, likely
54°12°–64°18°
Typical high / low
76°24° / 56°13°
Wind
8 mph13 km/h, gusts 15 mph24 km/h
UV peak
4
Thursday, Oct 29. Mostly cloudy. High 72°22°, low 61°16°. Typical 76°24° / 56°13°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 62°17°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 72°22°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 67°20°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 63°17°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 72.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
70°21°–74°23°
Low, likely
56°13°–65°18°
Typical high / low
76°24° / 56°13°
Wind
9 mph14 km/h, gusts 18 mph29 km/h
UV peak
5
Friday, Oct 30. Cloudy. High 71°22°, low 62°17°. Typical 76°24° / 56°13°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 64°18°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 73°23°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 67°19°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 64°18°
  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.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
68°20°–75°24°
Low, likely
55°13°–66°19°
Typical high / low
76°24° / 56°13°
Wind
10 mph16 km/h, gusts 21 mph34 km/h
UV peak
4
Saturday, Oct 31. Showers. High 68°20°, low 63°17°. Typical 76°24° / 56°13°. Rain 1 in26 mm, 30% chance. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 66°19°
  20% chance · 0.01 in0.3 mm
2. Afternoon
  noon–6 PM
  Drizzle, 67°19°
  20% chance · 0.23 in5.8 mm
3. Evening
  6 PM–midnight
  Showers, 66°19°
  30% chance · 1 in26 mm
4. Overnight
  midnight–6 AM
  Showers, 66°19°
  40% chance · 0.4 in10.1 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.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
65°18°–72°22°
Low, likely
59°15°–65°18°
Typical high / low
76°24° / 56°13°
Wind
20 mph32 km/h
UV peak
1
Sunday, Nov 1. Showers. High 70°21°, low 63°17°. Typical 76°24° / 56°13°. Rain 0.94 in24 mm, 40% chance. Forecasts agree.
1. Morning
  6 AM–noon
  Showers, 67°20°
  40% chance · 0.59 in15 mm
2. Afternoon
  noon–6 PM
  Drizzle, 70°21°
  40% chance · 0.14 in3.6 mm
3. Evening
  6 PM–midnight
  Showers, 68°20°
  40% chance · 0.13 in3.2 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 agreeIndependent forecasts are close; the range is narrow.
High, likely
69°21°–72°22°
Low, likely
60°16°–65°18°
Typical high / low
76°24° / 56°13°
Wind
22 mph35 km/h, gusts 28 mph45 km/h
UV peak
3

10 days15 days30 days

The outlook

Today
Dry, high 70°, low 57°.
Tomorrow
Dry, high 75°, low 59°, warming up.
Sunday
Dry, high 79°, low 60°, warming up.
Rest of week
Highs 68–80°; chance of precipitation on Sunday.

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

3.7 mi

Below flood stage

Level: 1.6 ft
Flow: 8 cfs

Reading from Fri 3:45 AM · NWS gauge page

Los Angeles River below Wardlow Road

16 mi

Level: 0.4 ft

Reading from Fri 3 AM · NWS gauge page

Compton Creek at Greenleaf

20 mi

Level: 14.7 ft

Reading from Fri 3:30 AM · NWS gauge page

Los Angeles River at Firestone

21 mi

Below flood stage

Level: 2.2 ft

Reading from Fri 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 52% less cooling than a typical week.

This week 6Typical 12

Cooling degree days, base 65°F

Comfort

Comfortable, non-humid air (dew point 58°F).

Open the windows?

Today, 10:00 AM–2:00 AM

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

Is this typical?

Long Beach Daugherty Airport · official normals 1991–2020 · records 1958–2026

Oct 23, today vs a typical year

Today’s expected high is 7°4° colder than typical.

Last 7 days vs normal

On average 6°3° warmer than normal (daily mean temperature).

+12°+6°SatOct 17
+6°+3°SunOct 18
+6°+3°MonOct 19
+4°+2°TueOct 20
+3°+1°WedOct 21
—ThuOct 22
—FriOct 23

Fountain Valley weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 11 h 5 min; Losing 2 min 2 s a day; shortest Dec 21, 1 h 10 min less
Golden hour: 5:34–6:24 PM; Morning 6:47–7:37 AM
Blue hour: 6:24–6:33 PM; Morning 6:37–6:47 AM; first light 6:37 AM

Stars tonight? Poor

Clouds most of the night (about 48% cover).

Moon

Waxing gibbous

91% lit · growing

Today: sets 4:23 AM · rises 4:36 PM
Full moon: Oct 25
New moon: Nov 8

Looking northeast from Fountain Valley. The highest point on the skyline is about 10,000 ft, 44 mi away.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.