FULLERTON, CA 92837 Weather Forecast & Current Conditions

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92837 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
FULLERTON, CA Current Weather
6:53 PM PDT AUG 20, 2026
Clear 79°F
Feels Like:	81°F
Dewpoint:	64°F
Rel. Hum.:	60%
Visibility:	10 miles
Wind:	Variable at 5 mph
Pressure:	29.89 inches
Last 72 hours
Local Area Snow Depth
California Current Weather
California MOS Forecast Weather

Regional Weather Maps

(Automated weather data from NWS/FAA)

92837 WEATHER FORECAST
10-Day model forecast maps 2026 Hurricanes	FULLERTON, CA 92837 Weather Forecast	Snowfall Forecast pages Snow Depth pages

TONIGHT
Partly cloudy. Patchy fog overnight. Lows 64 to 69. Light winds.

FRIDAY
Partly cloudy in the morning...becoming mostly sunny. Highs 84 to 88 towards the coast to 91 to 94 farther inland. Light winds becoming southwest 10 mph in the afternoon.

FRIDAY NIGHT
Mostly clear in the evening...becoming partly cloudy overnight with patchy fog. Lows 66 to 70. Light winds.

SATURDAY
Partly cloudy in the morning...becoming mostly sunny. Highs 86 to 89 towards the coast to 93 to 96 farther inland. Light winds becoming southwest 10 mph in the afternoon.

SATURDAY NIGHT
Mostly clear. Lows 65 to 70. Light winds.

SUNDAY
Partly cloudy with patchy fog in the morning...becoming mostly sunny. Highs 86 to 90 towards the coast to 94 farther inland.

SUNDAY NIGHT
Mostly clear. Lows 66 to 71.

MONDAY
Partly cloudy in the morning...becoming mostly sunny. Highs 87 to 91 towards the coast to 93 to 96 farther inland.

MONDAY NIGHT
Mostly clear. Lows 67 to 71.

TUESDAY
Mostly sunny. Highs 88 to 92 towards the coast to 94 to 97 farther inland.

TUESDAY NIGHT
Mostly clear in the evening...becoming partly cloudy. Lows 68 to 72.

WEDNESDAY
Partly cloudy in the morning...becoming mostly sunny. Highs 88 to 92 towards the coast to 94 to 97 farther inland.

WEDNESDAY NIGHT
Mostly clear. Lows 68 to 72.

92837 WEATHER SATELLITE LOOPS

Visible Weather Satellite
FULLERTON, CA 92837

Infrared Weather Satellite
FULLERTON, CA 92837

92837 WEATHER RADAR LOOP

NEXRAD Weather Radar
FULLERTON, CA 92837

MOS COMPUTER WEATHER FORECAST

FULLERTON, CA 3 hourly weather forecast

weather forecast created 8:00 AM EDT 8/20/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Thursday
20 AUG 2026

11 AM

82°

84°

Partly Cloudy

1%

0% Thunder
( 0% severe)

SSW 3

56%

65°

High 88°

2 PM

87°

89°

Partly Cloudy

SSW 6

48%

65°

Partly Cloudy

5 PM

87°

88°

Partly Cloudy

2%

0% Thunder
( 0% severe)

SSW 7

46%

64°

8 PM

77°

79°

Partly Cloudy

SSW 3

67%

65°

Friday
21 AUG 2026

11 PM

74°

74°

Partly Cloudy

1%

0% Thunder
( 0% severe)

CALM

76%

66°

Low 70°

2 AM

72°

72°

Partly Cloudy

SSW 3

81%

66°

High 91°

5 AM

71°

71°

Partly Cloudy

1%

0% Thunder
( 1% severe)

CALM

84%

66°

Partly Cloudy

8 AM

73°

73°

Partly Cloudy

CALM

79%

66°

11 AM

83°

85°

Partly Cloudy

1%

0% Thunder
( 1% severe)

SW 3

57%

66°

2 PM

88°

90°

Partly Cloudy

SW 6

47%

65°

5 PM

88°

89°

Partly Cloudy

0%

0% Thunder
( 0% severe)

SSW 7

45%

64°

8 PM

79°

81°

Partly Cloudy

SSW 3

62%

65°

Saturday
22 AUG 2026

11 PM

74°

74°

Partly Cloudy

0%

0% Thunder
( 0% severe)

S 2

79%

67°

Low 70°

2 AM

72°

72°

Partly Cloudy

CALM

81%

66°

High 92°

5 AM

71°

71°

Partly Cloudy

0%

0% Thunder
( 0% severe)

CALM

84%

66°

Partly Cloudy

8 AM

73°

73°

Partly Cloudy

CALM

79%

66°

11 AM

83°

85°

Clear

0%

0% Thunder
( 1% severe)

SW 2

55%

65°

2 PM

89°

91°

Clear

SW 6

44%

64°

5 PM

90°

90°

Clear

WSW 7

39%

62°


FULLERTON, CA extended weather forecast
Sunday 23 AUG 2026	Monday 24 AUG 2026	Tuesday 25 AUG 2026	Wednesday 26 AUG 2026	Thursday 27 AUG 2026
Low 69°	Low 69°	Low 69°	Low 68°	Low 68°
High 92°	High 93°	High 94°	High 90°	High 89°

Clear	Clear 1% Rain	Clear 1% Rain	Clear 1% Rain	Partly Cloudy 2% Rain

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