How does NOAA issue severe storm watches for Fullerton?

The National Weather Service (NWS) monitors atmospheric instability across California. When convective storms, tornado potential, or flash floods are detected, automated NOAA advisories are immediately broadcasted.

What are the best outdoor weather hours in Fullerton today?

Check the 24-hour hourly trend chart above to identify windows of minimal rain probability, low UV index periods, and mild temperatures.

CA, USAZIP 92831Live NOAA Station

Fullerton, CA

Q: What is the current temperature and forecast in Fullerton, California?

The current weather in Fullerton is around 73°F. Forecast models from NOAA and high-resolution satellite imagery provide 10-day trends and real-time precipitation radars updated every 15 minutes.

Parcialmente nublado•Sensación térmica 76°F+2° heat index

85°F/66°F

1 mph 309°

66%Humedad

73°F

National Weather Service High-Resolution Rapid Refresh (HRRR)

Actualizado: 03:00 AM (America/Los_Angeles)

Daily Meteorological Briefing

Fullerton, CA

Synthesized forecast and practical day-planning insights

NOAA HRRR Stream

Expect mild and stable weather across Fullerton, CA today.

Current temperature is 73°F (feels like 76°F), with daytime highs reaching 85°F and overnight lows around 66°F. Humidity is at 66%, with atmospheric pressure steady at 1012.9 hPa.

Overall excellent conditions for commuting and outdoor routines.

Daily Range

Δ 11° Variation

Rain Likelihood

Low (< 10%)

Solar Exposure

UV 4.3 • Moderate

24-Hour Temperature & Rain Outlook

Hourly temperature progression and precipitation probability

Temp (°F) Rain (%)

Pronóstico por Hora

Next 16 Hours

Now

69°F

1 AM

68°F

2 AM

67°F

3 AM

66°F

4 AM

67°F

5 AM

68°F

6 AM

68°F

7 AM

69°F

8 AM

70°F

9 AM

71°F

10 AM

73°F

11 AM

77°F

12 PM

80°F

1 PM

83°F

2 PM

85°F

3 PM

85°F

Pronóstico de 10 Días

Extended 10-day meteorological outlook

10-Day Range

Hoy

22 sept

66°F

85°F

mié

23 sept

61°F

85°F

jue

24 sept

66°F

90°F

vie

25 sept

73°F

90°F

sáb

26 sept

74°F

89°F

dom

27 sept

73°F

87°F

lun

28 sept

71°F

86°F

mar

29 sept

74°F

95°F

mié

30 sept

77°F

94°F

jue

1 oct

71°F

81°F

Weather Details & Observations

Real-time atmospheric measurements and environmental indicators

Live Feed

Índice UVModerate

4.3 / 11+

Sunscreen advisedPeak 6.95

Viento309°

1 mph

Wind Gusts:2 mph

Conditions:Gentle breeze

Sun CycleDaylight

Sunrise06:39 AM

Sunset06:48 PM

Solar Noon:12:54 PM

HumedadHumid

66%

Punto de Rocío:61°F

PresiónSteady

29.91 inHg

Trend:Stable (+0.1 hPa)

VisibilidadClear

15.2 mi

Haze:Minimal

Air Quality Index (AQI)Moderate

63US EPA Standard

Air quality is acceptable for most people.

PM2.518 µg

OZONE65 µg

PM1023 µg

Daily Lifestyle & Activity Index

Practical recommendations tailored to current local conditions

Outdoor SportsIdeal

Perfect temperature and low humidity for outdoor workouts.

Car WashRecommended

Dry conditions will keep your vehicle clean.

Pollen & AllergyLow Risk

Pollen counts remain in the comfortable range.

Driving SafetyOptimal

Dry pavement and clear visibility throughout.

Sun & Moon • Celestial Dynamics

Solar orbital arc trajectory and lunar cycle visibility

Astronomy Telemetry

Solar Day TrackDaylight Arc

Sunrise11:39 PM

Daylight ~13h

Sunset11:48 AM

Lunar Phase & StargazingNight Sky

Waxing Gibbous

80% Illumination

Stargazing condition: Optimal Visibility

Next Full Moon in ~5 daysTidal Currents Normal

Preguntas Frecuentes sobre el Clima - Fullerton, California

The current weather in Fullerton is around 73°F. Forecast models from NOAA and high-resolution satellite imagery provide 10-day trends and real-time precipitation radars updated every 15 minutes.

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