FULLERTON, CA 92837 Weather Forecast & Current Conditions

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92837 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
FULLERTON, CA Current Weather
8:53 AM PDT MAY 21, 2026
Clear 70°F
Feels Like:	70°F
Dewpoint:	57°F
Rel. Hum.:	63%
Visibility:	10 miles
Wind:	Calm
Pressure:	29.90 inches
Last 72 hours
Local Area Snow Depth
California Current Weather
California MOS Forecast Weather

Weather Map

(Automated weather data from NWS/FAA)

92837 WEATHER FORECAST
10-Day model forecast maps 2025 Hurricanes	FULLERTON, CA 92837 Weather Forecast	Snowfall Forecast pages Snow Depth pages

TODAY
Partly cloudy with patchy fog this morning...becoming mostly sunny. Highs 76 to 79 towards the coast to 82 farther inland. Areas of winds south 10 mph.

TONIGHT
Mostly clear in the evening...becoming partly cloudy overnight with patchy fog. Lows 54 to 59. Areas of winds southwest 10 mph in the evening becoming light.

FRIDAY
Partly cloudy with patchy fog in the morning...becoming mostly sunny. Highs 75 to 79. Areas of winds south to 10 mph.

FRIDAY NIGHT
Mostly clear in the evening...becoming partly cloudy overnight with patchy fog. Lows 53 to 58. Areas of winds southwest 10 mph in the evening becoming light.

SATURDAY
Mostly cloudy with patchy fog in the morning... Becoming mostly sunny. Highs around 74 towards the coast to 75 to 78 farther inland. Areas of winds southwest to 10 mph.

SATURDAY NIGHT
Mostly clear in the evening...becoming partly cloudy overnight with patchy fog. Lows 52 to 57.

SUNDAY
Mostly cloudy with patchy fog in the morning...becoming mostly sunny. Highs around 74 towards the coast to 75 to 78 farther inland.

SUNDAY NIGHT
Clear in the evening...becoming partly cloudy. Lows 51 to 57.

MEMORIAL DAY
Partly cloudy. Highs 70 to 73.

MONDAY NIGHT
Mostly clear in the evening...becoming partly cloudy. Lows 50 to 56.

TUESDAY
Mostly cloudy in the morning...becoming partly cloudy. Highs around 69.

TUESDAY NIGHT
Partly cloudy. Lows 50 to 56.

WEDNESDAY
Mostly cloudy in the morning...becoming partly cloudy. Highs around 70.

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 PM EDT 5/20/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Thursday
21 MAY 2026

11 PM

68°

68°

Partly Cloudy

0%

0% Thunder
( 0% severe)

S 7

53%

50°

Low 61°

2 AM

64°

66°

Partly Cloudy

CALM

70%

54°

High 81°

5 AM

62°

63°

Mostly Cloudy

0%

0% Thunder
( 0% severe)

CALM

72%

53°

Decreasing Clouds

8 AM

65°

65°

Mostly Cloudy

CALM

65%

53°

11 AM

75°

75°

Clear

0%

0% Thunder
( 0% severe)

SSW 7

46%

53°

2 PM

79°

79°

Clear

SW 8

39%

52°

5 PM

79°

79°

Clear

0%

0% Thunder
( 0% severe)

SW 9

36%

50°

8 PM

70°

70°

Clear

SSW 8

55%

53°

Friday
22 MAY 2026

11 PM

64°

65°

Partly Cloudy

0%

0% Thunder
( 0% severe)

S 5

78%

57°

Low 59°

2 AM

61°

62°

Partly Cloudy

CALM

84%

56°

High 77°

5 AM

60°

61°

Mostly Cloudy

0%

0% Thunder
( 0% severe)

CALM

87%

56°

Decreasing Clouds

8 AM

63°

64°

Mostly Cloudy

CALM

78%

56°

11 AM

71°

71°

Partly Cloudy

0%

0% Thunder
( 0% severe)

SW 7

59%

56°

2 PM

75°

75°

Clear

SW 9

48%

54°

5 PM

74°

74°

Clear

0%

0% Thunder
( 0% severe)

SW 9

48%

53°

8 PM

66°

66°

Clear

SW 7

65%

54°


FULLERTON, CA extended weather forecast
Saturday 23 MAY 2026	Sunday 24 MAY 2026	Monday 25 MAY 2026	Tuesday 26 MAY 2026	Wednesday 27 MAY 2026
Low 61°	Low 60°	Low 60°	Low 60°	Low 61°
High 76°	High 76°	High 74°	High 72°	High 75°

Mostly Cloudy	Partly Cloudy 1% Rain	Partly Cloudy 1% Rain	Overcast 15% Rain	Partly Cloudy 18% Rain

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