Now

19°

17%

19 mph

06:00

19°

20%

18 mph

07:00

20°

25%

15 mph

08:00

21°

24%

17 mph

09:00

24°

16 mph

10:00

26°

13%

15 mph

11:00

29°

12%

14 mph

12:00

28°

12%

13 mph

13:00

13°

17%

14 mph

14:00

13°

12%

16 mph

15:00

13°

17%

17 mph

16:00

13°

12%

17 mph

17:00

13°

17%

18 mph

18:00

13°

17%

19 mph

19:00

13°

18 mph

20:00

13°

13%

17 mph

21:00

13°

12%

17 mph

22:00

13°

15 mph

23:00

13°

14%

15 mph

00:00

13°

14 mph

01:00

13°

13 mph

02:00

13°

10%

13 mph

03:00

13°

10%

14 mph

04:00

13°

12%

13 mph

10-day forecast

Updated 5:04 AM

Mon · Today · 17 Aug Showers

29° 13° 0.02 in

Tue · Tomorrow · 18 Aug Showers

13° 13° 0.08 in

Wednesday · 19 Aug Sunny

13° 12° 0.01 in

Thursday · 20 Aug Showers

15° 13° 0.02 in

Friday · 21 Aug Showers

17° 14° 1.04 in

Saturday · 22 Aug Showers

16° 14° 0.12 in

Sunday · 23 Aug Showers

14° 12° 0.02 in

Monday · 24 Aug Sunny

13° 12° 0.00 in

Tuesday · 25 Aug Showers

14° 11° 0.19 in

Wednesday · 26 Aug Showers

13° 12° 0.16 in

Details & indices

Wind

19 mph SW

Gusts 19 mph

Humidity

93%

Dew point 18°

Pressure

29.88 inHg

Falling

UV index

10 — Very high

High today

Air Quality

Good

AQI 43 · US EPA

Allergy

High

Mugwort

Visibility

6 mi

Clear view

Allergy — Rossmoor

🌿 Conditions right now

View all →

Birch

None

Grass

Moderate

Oak

None

Alder

None

Hazel

None

Mugwort

Moderate

Ragweed

Low

Sun & moon

Sunrise6:15 AM

Sunset7:37 PM

Length of day13h 22m

Moonrise11:28 AM

Moonset10:17 PM

Moon phase🌒 Waxing Crescent · 25%

Next full moonAug 27 Sturgeon Moon

Latitude33.7856°N

Longitude-118.0851°E

Water temps nearby

View all →

Huntington Beach (10 mi)72°

Newport Beach (15 mi)73°

Laguna Beach (24 mi)73°

Venice Beach (26 mi)73°

Santa Monica Beach (28 mi)73°

Zuma Beach, Malibu (45 mi)72°

🌤️No rain expected in the next 90 minutes

Now+30+60+90 min

Minute-by-minute precip · HRRR nowcast

Daily planner

computed from today's forecast

Laundry day

Poor

Line-drying weather

Grilling

Fair

Fire up the grill

Running

Poor

Lace up outside

Patio

Poor

Dinner outdoors

Nearby places in {{REGION}}

🌤️

18°

Data sources · Monday, August 17

Where the Rossmoor forecast comes from

This page blends NOAA/NWS model guidance with global ensembles for the 10-day outlook, air quality and alerts. Data refreshes every hour, current conditions every 15 minutes. Coordinates: 33.7856°N, -118.0851°.

NBM + global weather models

Updated: 5:04 AM

Weather in Rossmoor

Rossmoor's outlook: warmest day near 29° (Monday), coldest night about 11° (Tuesday). About 1.7 in of precipitation is expected in total; the most likely wet day is Friday (90% chance). Expect a blustery spell — gusts near 56 mph on Friday. No watches or warnings are active for the area right now. Right now Rossmoor is running about 49° warmer than Santa Clarita. Longer view: Mediterranean pattern — nearly all rain lands November through March.

Rossmoor, CA · Elev 13 ft · 33.79°N, 118.09°W · California · Forecast computed for these exact coordinates

Rossmoor, CA Weather (90840)

Weather map — Rossmoor

Today · Mon 8/17

Overnight · Mon 8/17

Tomorrow · Tue 8/18

7-day trend

10-day forecast

Details & indices

🌿 Conditions right now

Sun & moon

Water temps nearby

Daily planner