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Fullerton Weather Warning NWS WEATHER ALERT FOR THE FULLERTON, CA AREA - Issued: 1216 PM PDT Sun Aug 2 2026 Fullerton Weather Warning

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Fullerton, CA Weather - Hour by Hour Forecast

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Fullerton, CA Weather - Hour by Hour Forecast

24 Hour Forecast

Current Conditions - Clear. Temperature is 90°F32°C, dew point 64°F18°C, humidity 42%. Wind direction is N/A at N/A mph0 km/h with visibility of 10 mi16 km. Barometric pressure is 29.81 in1009 mb.
Tonight - Mostly clear this evening...Becoming partly cloudy. Lows 63 to 68. Areas of winds southwest 10 mph this evening becoming light... Full Forecast
Monday - Partly cloudy in the morning...Becoming mostly sunny. Highs 83 to 86 towards the coast to 89 to 92 farther inland. Light winds bec.. Full Forecast

Fullerton Hourly Weather

24 Hour Forecast Scroll
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Fullerton, CA Hourly Weather - Clear - 2:00 PM Fullerton, CA Hourly Weather - Clear - 3:00 PM Fullerton, CA Hourly Weather - Clear - 4:00 PM Fullerton, CA Hourly Weather - Clear - 5:00 PM Fullerton, CA Hourly Weather - Clear - 6:00 PM Fullerton, CA Hourly Weather - Clear - 7:00 PM Fullerton, CA Hourly Weather - Clear - 8:00 PM Fullerton, CA Hourly Weather - Clear - 9:00 PM Fullerton, CA Hourly Weather - Clear - 10:00 PM Fullerton, CA Hourly Weather - Clear - 11:00 PM Fullerton, CA Hourly Weather - Clear - 12:00 AM Fullerton, CA Hourly Weather - Clear - 1:00 AM Fullerton, CA Hourly Weather - Clear - 2:00 AM Fullerton, CA Hourly Weather - Clear - 3:00 AM Fullerton, CA Hourly Weather - Cloudy - 4:00 AM Fullerton, CA Hourly Weather - Cloudy - 5:00 AM Fullerton, CA Hourly Weather - Cloudy - 6:00 AM Fullerton, CA Hourly Weather - Cloudy - 7:00 AM Fullerton, CA Hourly Weather - Cloudy - 8:00 AM Fullerton, CA Hourly Weather - Cloudy - 9:00 AM Fullerton, CA Hourly Weather - Clear - 10:00 AM Fullerton, CA Hourly Weather - Clear - 11:00 AM Fullerton, CA Hourly Weather - Clear - 12:00 PM Fullerton, CA Hourly Weather - Clear - 1:00 PM
Clear Clear Clear Clear Clear Clear Clear Clear Clear Clear Clear Clear Clear Clear Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Clear Clear Clear Clear
85°F29°C 84°F29°C 84°F29°C 83°F28°C 80°F27°C 78°F26°C 75°F24°C 74°F23°C 72°F22°C 71°F22°C 71°F22°C 70°F21°C 70°F21°C 70°F21°C 69°F21°C 69°F21°C 70°F21°C 71°F22°C 72°F22°C 75°F24°C 78°F26°C 81°F27°C 83°F28°C 84°F29°C
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0% 0% 0% 0% 1% 1% 1% 1% 1% 1% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0%
64°F18°C 64°F18°C 63°F17°C 63°F17°C 63°F17°C 62°F17°C 62°F17°C 62°F17°C 63°F17°C 63°F17°C 63°F17°C 63°F17°C 63°F17°C 63°F17°C 62°F17°C 62°F17°C 62°F17°C 63°F17°C 63°F17°C 63°F17°C 64°F18°C 64°F18°C 64°F18°C 65°F18°C
50% 51% 49% 51% 56% 58% 64% 66% 73% 76% 76% 79% 79% 79% 78% 78% 76% 76% 73% 66% 62% 56% 53% 53%
SW SW SSE SSE SSE SSE SSE S S S S S S S S S SSE SSE SE SSE S S SSE SSE
7 mph 7 mph 7 mph 7 mph 7 mph 6 mph 6 mph 6 mph 2 mph 2 mph 2 mph 1 mph 1 mph 1 mph 1 mph 1 mph 1 mph 1 mph 1 mph 1 mph 2 mph 2 mph 2 mph 8 mph
10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km
Hour (PDT)
Weather
Clouds
Temperature
Precip. Type
POP
Dewpoint
Humidity
Wind Direction
Wind Speed
Visibility
POP = Probability of Precipitation. ** Indicates missing data/values from KFUL model statistics.

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Prob Precip % = Probability of Precipitation.

Fullerton 36 Hour Forecast

POP = Probability of Precipitation. ** Indicates missing data/values from model statistics.

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