As of 11:09 PDT

Weather in Placentia, CA

Name: Placentia
Address: Placentia, California, US

81°

Placentia, Friday, 9 October, 11:09

Clear. Feels like 84°. High 88°, low 68°.

Pressure29.80 inHg

Wind6 mph NW

Humidity60%

Visibility6.2 mi

Dew point66°

See detailed hourly forecast

Monthly outlook for Placentia, CA: average high 84.5°, average low 68.8°. That is 3° above the climate normal for October. Precipitation is expected on 3 days (about 1.1 inches), against a normal of 1 days and 0.3 inches. The warmest day looks like 17 October (95.8°), the coolest 13 October (53.1°).

84.5°/68.8°

Average high / low

+3°

Above normal

3 / 1

Wet days / normal

1.1 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
9 October – 18 October	82.2°	79.5°	+1.5°
19 October – 28 October	88.4°	77.6°	+6°
29 October – 7 November	at normal	74.9°	—

October records over 66 years

104.9°23 October 2017All-time high

35.6°30 October 1971All-time low

Sat, 1089° / 66°

0.04

89 °

Placentia, Saturday, 10 October

Light rain. High 89°, low 66°.

Pressure29.65 inHg

Wind0.6 mph SE

Humidity30%

Visibility6.2 mi

Dew point51°

Sun, 1173° / 61°

0.89

73 °

Placentia, Sunday, 11 October

Heavy rain. High 73°, low 61°.

Pressure29.62 inHg

Wind11.6 mph SW

Humidity88%

Visibility6.2 mi

Dew point62°

Mon, 1267° / 57°

0.2

67 °

Placentia, Monday, 12 October

Light rain. High 67°, low 57°.

Pressure29.91 inHg

Wind4.6 mph SW

Humidity70%

Visibility4.8 mi

Dew point54°

Tue, 1370° / 53°

70 °

Placentia, Tuesday, 13 October

Mostly clear. High 70°, low 53°.

Pressure30.03 inHg

Wind6 mph SW

Humidity60%

Visibility—

Dew point49°

Wed, 1477° / 54°

77 °

Placentia, Wednesday, 14 October

Mostly clear. High 77°, low 54°.

Pressure30.06 inHg

Wind5.5 mph NE

Humidity44%

Visibility—

Dew point46°

Thu, 1580° / 65°

80 °

Placentia, Thursday, 15 October

Clear. High 80°, low 65°.

Pressure30.03 inHg

Wind8.5 mph SW

Humidity57%

Visibility—

Dew point56°

Fri, 1693° / 71°

93 °

Placentia, Friday, 16 October

Clear. High 93°, low 71°.

Pressure30.00 inHg

Wind5.5 mph N

Humidity14%

Visibility—

Dew point29°

Sat, 1796° / 79°

96 °

Placentia, Saturday, 17 October

Clear. High 96°, low 79°.

Pressure29.91 inHg

Wind7.8 mph SW

Humidity12%

Visibility—

Dew point30°

Sun, 1891° / 79°

91 °

Placentia, Sunday, 18 October

Clear. High 91°, low 79°.

Pressure29.91 inHg

Wind10.6 mph W

Humidity21%

Visibility—

Dew point41°

Mon, 1985° / 75°

85 °

Placentia, Monday, 19 October

Clear. High 85°, low 75°.

Pressure29.91 inHg

Wind9.3 mph SW

Humidity35%

Visibility—

Dew point51°

Tue, 2085° / 72°

85 °

Placentia, Tuesday, 20 October

Clear. High 85°, low 72°.

Pressure29.97 inHg

Wind8.3 mph SW

Humidity45%

Visibility—

Dew point55°

Wed, 2192° / 72°

92 °

Placentia, Wednesday, 21 October

Clear. High 92°, low 72°.

Pressure29.94 inHg

Wind10.1 mph W

Humidity22%

Visibility—

Dew point40°

Thu, 2294° / 77°

94 °

Placentia, Thursday, 22 October

Clear. High 94°, low 77°.

Pressure29.88 inHg

Wind10.7 mph W

Humidity14%

Visibility—

Dew point32°

Fri, 2391° / 78°

91 °

Placentia, Friday, 23 October

Clear. High 91°, low 78°.

Pressure29.85 inHg

Wind9.5 mph SW

Humidity16%

Visibility—

Dew point35°

Sat, 2484° / 73°

84 °

Placentia, Saturday, 24 October

Overcast. High 84°, low 73°.

Pressure29.94 inHg

Wind10 mph SW

Humidity42%

Visibility—

Dew point53°

From day 17 onward the outlook is built from 60-year climate statistics

Sun, 2578° / 57°

0.01

78 °

Placentia, Sunday, 25 October

Climate normal for this date — 60-year average.

Average high78°

Average low57°

Average precipitation0.01 in

Chance of precipitation7%

Record high99° (2017)

Record low44° (1971)

Mon, 2677° / 55°

0.01

77 °

Placentia, Monday, 26 October

Climate normal for this date — 60-year average.

Average high77°

Average low55°

Average precipitation0.01 in

Chance of precipitation7%

Record high92° (1965)

Record low45° (1989)

Tue, 2776° / 55°

0.06

76 °

Placentia, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high76°

Average low55°

Average precipitation0.06 in

Chance of precipitation10%

Record high93° (1965)

Record low44° (1996)

Wed, 2876° / 54°

0.02

76 °

Placentia, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high76°

Average low54°

Average precipitation0.02 in

Chance of precipitation12%

Record high93° (2025)

Record low43° (1970)

Thu, 2975° / 54°

0.01

75 °

Placentia, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high75°

Average low54°

Average precipitation0.01 in

Chance of precipitation7%

Record high96° (2025)

Record low36° (1971)

Fri, 3075° / 54°

0.05

75 °

Placentia, Friday, 30 October

Climate normal for this date — 60-year average.

Average high75°

Average low54°

Average precipitation0.05 in

Chance of precipitation20%

Record high92° (1962)

Record low36° (1971)

Sat, 3175° / 53°

0.02

75 °

Placentia, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high75°

Average low53°

Average precipitation0.02 in

Chance of precipitation7%

Record high91° (1962)

Record low40° (1971)

Sun, 0176° / 53°

0.04

76 °

Placentia, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high76°

Average low53°

Average precipitation0.04 in

Chance of precipitation12%

Record high94° (1997)

Record low41° (1971)

Mon, 0276° / 53°

0.02

76 °

Placentia, Monday, 2 November

Climate normal for this date — 60-year average.

Average high76°

Average low53°

Average precipitation0.02 in

Chance of precipitation12%

Record high94° (1997)

Record low43° (1971)

Tue, 0376° / 52°

76 °

Placentia, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high76°

Average low52°

Average precipitation0 in

Chance of precipitation5%

Record high94° (2010)

Record low43° (1990)

Wed, 0475° / 52°

0.03

75 °

Placentia, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high75°

Average low52°

Average precipitation0.03 in

Chance of precipitation5%

Record high94° (1976)

Record low39° (1994)

Thu, 0574° / 52°

0.01

74 °

Placentia, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high74°

Average low52°

Average precipitation0.01 in

Chance of precipitation5%

Record high97° (2020)

Record low43° (2011)

Fri, 0673° / 53°

0.02

73 °

Placentia, Friday, 6 November

Climate normal for this date — 60-year average.

Average high73°

Average low53°

Average precipitation0.02 in

Chance of precipitation10%

Record high92° (2006)

Record low44° (2011)

Sat, 0772° / 53°

0.06

72 °

Placentia, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high72°

Average low53°

Average precipitation0.06 in

Chance of precipitation10%

Record high91° (2006)

Record low39° (2011)

About the monthly outlook

How accurate is a 30-day forecast?

The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Placentia, CA are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.

What does "above normal" mean?

We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.

Where do the 66-year records come from?

They are real temperature extremes recorded in Placentia, CA since 1960: the highest and lowest reading for each calendar date, with the year it happened.

How often is it updated?

The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.