10-day forecast for Fullerton, CA: 58° to 82°, with precipitation expected on 3 days. The table below breaks each day into morning, afternoon, evening and overnight.
82°
Best day: Monday, October 26
66° · 0.13 in
Worst day: Saturday, October 31
Tap any day below to see morning, afternoon, evening and overnight.
Tue, 2781° / 58°0
Morning64°feels 64°
Afternoon81°feels 80°
Evening67°feels 67°
Overnight61°feels 61°
81 °
Fullerton, Tuesday, 27 October
Clear. High 81°, low 58°.
Pressure30.00 inHg
Wind1.9 mph S
Humidity53%
Visibility6.2 mi
Dew point56°
Wed, 2876° / 58°0
Morning59°feels 59°
Afternoon76°feels 75°
Evening67°feels 66°
Overnight61°feels 61°
76 °
Fullerton, Wednesday, 28 October
Partly cloudy. High 76°, low 58°.
Pressure29.94 inHg
Wind2.6 mph S
Humidity43%
Visibility6.2 mi
Dew point50°
Thu, 2974° / 59°0.01
Morning59°feels 59°
Afternoon74°feels 73°
Evening66°feels 66°
Overnight61°feels 61°
74 °
Fullerton, Thursday, 29 October
Light rain. High 74°, low 59°.
Pressure29.91 inHg
Wind3 mph S
Humidity53%
Visibility6.2 mi
Dew point54°
Fri, 3071° / 62°0.09
Morning65°feels 65°
Afternoon68°feels 68°
Evening67°feels 67°
Overnight64°feels 64°
71 °
Fullerton, Friday, 30 October
Light rain. High 71°, low 62°.
Pressure29.88 inHg
Wind7.7 mph S
Humidity67%
Visibility—
Dew point56°
Sat, 3166° / 59°0.13
Morning61°feels 61°
Afternoon64°feels 64°
Evening62°feels 62°
Overnight63°feels 63°
66 °
Fullerton, Saturday, 31 October
Light rain. High 66°, low 59°.
Pressure29.97 inHg
Wind6.8 mph NW
Humidity77%
Visibility—
Dew point56°
Sun, 0167° / 63°0.11
Morning65°feels 64°
Afternoon63°feels 63°
Evening66°feels 65°
Overnight66°feels 65°
67 °
Fullerton, Sunday, 1 November
Light rain. High 67°, low 63°.
Pressure30.00 inHg
Wind5.7 mph E
Humidity78%
Visibility—
Dew point56°
Mon, 0280° / 66°0.01
Morning68°feels 67°
Afternoon73°feels 72°
Evening78°feels 78°
Overnight73°feels 72°
80 °
Fullerton, Monday, 2 November
Light rain. High 80°, low 66°.
Pressure29.97 inHg
Wind8.2 mph NE
Humidity47%
Visibility—
Dew point49°
Tue, 0375° / 71°0
Morning72°feels 72°
Afternoon73°feels 72°
Evening74°feels 74°
Overnight71°feels 71°
75 °
Fullerton, Tuesday, 3 November
Overcast. High 75°, low 71°.
Pressure30.03 inHg
Wind5.3 mph SW
Humidity57%
Visibility—
Dew point56°
Wed, 0476° / 67°0.01
Morning69°feels 69°
Afternoon72°feels 72°
Evening73°feels 72°
Overnight68°feels 68°
76 °
Fullerton, Wednesday, 4 November
Light rain. High 76°, low 67°.
Pressure30.03 inHg
Wind12.3 mph W
Humidity63%
Visibility—
Dew point58°
About this forecast
How reliable is a 10-day forecast?
The first 3–5 days are the most reliable, typically within 2–4°. From day six to ten the models show the trend: the direction of change is right more often than the exact numbers.
What does the time-of-day table show?
Temperature in Fullerton, CA around 8am, 2pm, 8pm and 2am each day — handy for planning a walk, a drive or work outdoors.
How is the best day chosen?
We weigh the daytime high against precipitation: a warm, dry day scores highest.