New York, NY 65° Los Angeles, CA 68° Chicago, IL 62° 🌤️ Houston, TX Miami, FL 80° Phoenix, AZ 86° Seattle, WA 60° 🌤️ Denver, CO 🌤️ Toronto, ON Vancouver, BC 62°
WeatherLive › California › Fairfax

Fairfax, CA Weather (94978)

ZIP codes: 94978 · 94930
Today Hourly 10-Day Weekend Monthly Radar Air Quality Climate
Current WeatherFairfax · 5:30 AM PDT
71° | 55°
55°F
Feels like 54°
Mostly cloudy
WindSW 4 mph · Gusts 5 mph
Precip15% · –
Humidity97% · Dew point 54°
UV index9 Very high
Air Quality26 Good
Pressure29.97 inHg
Visibility6 mi
Sunrise / Sunset6:30 AM · 7:56 PM · 13h 26m

Weather map — Fairfax

Full radar →
Now
55°
26%
4 mph
06:00
55°
31%
5 mph
07:00
55°
35%
5 mph
08:00
57°
32%
5 mph
09:00
60°
23%
4 mph
10:00
64°
8%
4 mph
11:00
67°
15%
6 mph
12:00
67°
5%
8 mph
13:00
71°
15%
8 mph
14:00
70°
13%
8 mph
15:00
71°
14%
8 mph
16:00
70°
13%
9 mph
17:00
69°
5%
7 mph
18:00
68°
4%
7 mph
19:00
64°
5%
8 mph
20:00
60°
9%
8 mph
21:00
56°
13%
8 mph
22:00
56°
14%
7 mph
23:00
55°
14%
6 mph
00:00
56°
14%
6 mph
01:00
56°
14%
6 mph
02:00
56°
14%
6 mph
03:00
55°
14%
6 mph
04:00
55°
14%
6 mph

Today · Fri 8/21

High 71°
15% / –

Mostly cloudy. Winds W at 9 mph.

Overnight · Fri 8/21

Low 55°
— / –

Mostly cloudy.

Tomorrow · Sat 8/22

74° | 55°
8% / –

Sunny. Winds S at 9 mph.

7-day trend

Fairfax · temperature + precipitation

10-day forecast

Updated 5:30 AM

Details & indices

Wind
4 mph SW
Gusts 5 mph
Humidity
97%
Dew point 54°
Pressure
29.97 inHg
Rising
UV index
9 — Very high
High today
Air Quality
Good
AQI 26 · US EPA
Allergy
Very high
Mugwort
Visibility
6 mi
Clear view
Allergy — Fairfax

🌿 Conditions right now

View all →
Birch
None
Grass
Moderate
Oak
None
Alder
None
Hazel
None
Mugwort
High
Ragweed
Low

Sun & moon

Sunrise6:30 AM
Sunset7:56 PM
Length of day13h 26m
Moonrise3:58 PM
Moonset12:11 AM
Moon phase🌓 First Quarter · 63%
Next full moonAug 27 Sturgeon Moon
Latitude37.9871°N
Longitude-122.5889°E

Water temps nearby

View all →
Stinson Beach (7 mi)60°
🌤️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
Fair
Line-drying weather
Grilling
Great
Fire up the grill
Running
Great
Lace up outside
Patio
Great
Dinner outdoors
Nearby places in {{REGION}}
Los Angeles
Sunny
68° 🌤️
San Diego
—
— 🌤️
San Jose
—
—
San Francisco
Partly cloudy
58° 🌤️
Fresno
—
— 🌤️
Sacramento
—
—
Data sources · Friday, August 21
Where the Fairfax 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: 37.9871°N, -122.5889°.
NBM + global weather models
Updated: 5:30 AM
Weather in Fairfax
Fairfax's outlook: warmest day near 74° (Saturday), coldest night about 55° (Friday). Essentially no rain is in the forecast — expect a dry stretch. Heads up: a Small Craft Advisory is in effect — check the alerts tab before making plans. Right now Fairfax is about 33° cooler than nearby Reno. Longer view: Mediterranean pattern — nearly all rain lands November through March.
Fairfax, CA · Elev 115 ft · 37.99°N, 122.59°W · California · Forecast computed for these exact coordinates
Powered by NWS/NOAA guidance, multi-model forecasts and official environmental feeds · NOAA/NWS · EPA AirNow · MET Norway · global models
Updated: 5:30 AM