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Current weather in Placentia is clear sky.

Where can I find the hourly weather forecast for Placentia?

This page shows hourly weather forecast for Placentia, including temperature, wind, precipitation, humidity and cloud cover.

Is the weather forecast for Placentia updated regularly?

Weather data for Placentia is updated regularly with the latest available observations and forecasts.

Now · 2:36 AM

Placentia Weather & Hourly Forecast

United States · California · 92870

73°F

Clear night

Feels like: 79°F

💧 Humidity 88% 🌡 Pressure 29.88 inHg 💨 Wind 3 mph 👁 Visibility 14.8 mi ☁ Clouds 2% ☀️ UV index 0.0 · Low 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Placentia

Today

3:00 AM

Clear night

73° 💧 None 💨 3 mph H 88%29.88 inHg

6:00 AM

Mostly cloudy night

73° 💧 None 💨 5 mph H 90%29.88 inHg

9:00 AM

Mostly sunny

82° 💧 None 💨 2 mph H 73%29.91 inHg

12:00 PM

Overcast

89° 💧 None 💨 3 mph H 57%29.91 inHg

3:00 PM

Mostly sunny

92° 💧 None 💨 6 mph H 51%29.88 inHg

6:00 PM

Sunny

85° 💧 None 💨 4 mph H 56%29.88 inHg

9:00 PM

Mostly clear night

79° 💧 None 💨 2 mph H 75%29.91 inHg

Tomorrow

12:00 AM

Clear night

75° 💧 None 💨 1 mph H 88%29.94 inHg

3:00 AM

Clear night

73° 💧 None 💨 2 mph H 96%29.91 inHg

6:00 AM

Clear night

74° 💧 None 💨 3 mph H 90%29.91 inHg

9:00 AM

Sunny

85° 💧 None 💨 2 mph H 71%29.97 inHg

12:00 PM

Sunny

94° 💧 None 💨 4 mph H 51%29.94 inHg

3:00 PM

Sunny

97° 💧 None 💨 6 mph H 37%29.91 inHg

6:00 PM

Sunny

90° 💧 None 💨 4 mph H 42%29.88 inHg

9:00 PM

Clear night

81° 💧 None 💨 2 mph H 66%29.94 inHg

Thursday

12:00 AM

Clear night

77° 💧 None 💨 2 mph H 78%29.91 inHg

Today

3:00 AM

Clear night

73° 💧 None 💨 3 mph H 88%29.88 inHg

4:00 AM

Mostly clear night

73° 💧 None 💨 3 mph H 89%29.88 inHg

5:00 AM

Clear night

72° 💧 None 💨 3 mph H 90%29.88 inHg

6:00 AM

Mostly cloudy night

73° 💧 None 💨 5 mph H 90%29.88 inHg

7:00 AM

Mostly cloudy

74° 💧 None 💨 5 mph H 87%29.91 inHg

8:00 AM

Mostly cloudy

77° 💧 None 💨 4 mph H 79%29.91 inHg

9:00 AM

Mostly sunny

82° 💧 None 💨 2 mph H 73%29.91 inHg

10:00 AM

Overcast

85° 💧 None 💨 0 mph H 63%29.94 inHg

11:00 AM

Overcast

88° 💧 None 💨 2 mph H 59%29.94 inHg

12:00 PM

Overcast

89° 💧 None 💨 3 mph H 57%29.91 inHg

1:00 PM

Mostly sunny

91° 💧 None 💨 4 mph H 54%29.91 inHg

2:00 PM

Mostly sunny

92° 💧 None 💨 5 mph H 50%29.88 inHg

3:00 PM

Mostly sunny

92° 💧 None 💨 6 mph H 51%29.88 inHg

4:00 PM

Sunny

91° 💧 None 💨 5 mph H 51%29.88 inHg

5:00 PM

Sunny

89° 💧 None 💨 5 mph H 52%29.88 inHg

6:00 PM

Sunny

85° 💧 None 💨 4 mph H 56%29.88 inHg

7:00 PM

Sunny

82° 💧 None 💨 2 mph H 64%29.88 inHg

8:00 PM

Partly cloudy night

80° 💧 None 💨 2 mph H 70%29.88 inHg

9:00 PM

Mostly clear night

79° 💧 None 💨 2 mph H 75%29.91 inHg

10:00 PM

Mostly clear night

78° 💧 None 💨 2 mph H 79%29.94 inHg

11:00 PM

Clear night

76° 💧 None 💨 1 mph H 84%29.94 inHg

Tomorrow

12:00 AM

Clear night

75° 💧 None 💨 1 mph H 88%29.94 inHg

1:00 AM

Clear night

74° 💧 None 💨 1 mph H 91%29.94 inHg

2:00 AM

Clear night

73° 💧 None 💨 2 mph H 94%29.91 inHg

3:00 AM

Clear night

73° 💧 None 💨 2 mph H 96%29.91 inHg

4:00 AM

Clear night

73° 💧 None 💨 3 mph H 96%29.91 inHg

5:00 AM

Clear night

74° 💧 None 💨 4 mph H 92%29.91 inHg

6:00 AM

Clear night

74° 💧 None 💨 3 mph H 90%29.91 inHg

7:00 AM

Sunny

74° 💧 None 💨 4 mph H 89%29.94 inHg

8:00 AM

Sunny

79° 💧 None 💨 4 mph H 80%29.97 inHg

9:00 AM

Sunny

85° 💧 None 💨 2 mph H 71%29.97 inHg

10:00 AM

Sunny

89° 💧 None 💨 0 mph H 60%29.97 inHg

11:00 AM

Sunny

92° 💧 None 💨 2 mph H 55%29.97 inHg

12:00 PM

Sunny

94° 💧 None 💨 4 mph H 51%29.94 inHg

1:00 PM

Sunny

95° 💧 None 💨 5 mph H 46%29.94 inHg

2:00 PM

Sunny

96° 💧 None 💨 5 mph H 41%29.91 inHg

3:00 PM

Sunny

97° 💧 None 💨 6 mph H 37%29.91 inHg

4:00 PM

Sunny

96° 💧 None 💨 6 mph H 35%29.88 inHg

5:00 PM

Sunny

94° 💧 None 💨 6 mph H 37%29.88 inHg

6:00 PM

Sunny

90° 💧 None 💨 4 mph H 42%29.88 inHg

7:00 PM

Sunny

86° 💧 None 💨 2 mph H 51%29.91 inHg

8:00 PM

Clear night

83° 💧 None 💨 2 mph H 59%29.91 inHg

9:00 PM

Clear night

81° 💧 None 💨 2 mph H 66%29.94 inHg

10:00 PM

Clear night

79° 💧 None 💨 2 mph H 71%29.94 inHg

11:00 PM

Clear night

78° 💧 None 💨 2 mph H 74%29.94 inHg

Thursday

12:00 AM

Clear night

77° 💧 None 💨 2 mph H 78%29.91 inHg

1:00 AM

Clear night

76° 💧 None 💨 2 mph H 80%29.91 inHg

2:00 AM

Clear night

75° 💧 None 💨 2 mph H 80%29.91 inHg

3:00 AM

Clear night

74° 💧 None 💨 2 mph H 80%29.91 inHg

4:00 AM

Clear night

74° 💧 None 💨 3 mph H 78%29.91 inHg

5:00 AM

Clear night

73° 💧 None 💨 2 mph H 77%29.91 inHg

6:00 AM

Clear night

73° 💧 None 💨 2 mph H 78%29.91 inHg

7:00 AM

Sunny

73° 💧 None 💨 3 mph H 78%29.91 inHg

8:00 AM

Sunny

76° 💧 None 💨 3 mph H 71%29.94 inHg

9:00 AM

Sunny

81° 💧 None 💨 2 mph H 61%29.94 inHg

10:00 AM

Sunny

85° 💧 None 💨 2 mph H 52%29.91 inHg

11:00 AM

Sunny

89° 💧 None 💨 3 mph H 46%29.91 inHg

12:00 PM

Sunny

92° 💧 None 💨 4 mph H 40%29.88 inHg

1:00 PM

Sunny

94° 💧 None 💨 4 mph H 37%29.88 inHg

2:00 PM

Sunny

95° 💧 None 💨 5 mph H 34%29.85 inHg

3:00 PM

Sunny

95° 💧 None 💨 6 mph H 32%29.83 inHg

4:00 PM

Sunny

93° 💧 None 💨 6 mph H 33%29.83 inHg

5:00 PM

Sunny

91° 💧 None 💨 6 mph H 35%29.83 inHg

8:00 PM

Clear night

82° 💧 None 💨 3 mph H 52%29.83 inHg

11:00 PM

Clear night

76° 💧 None 💨 3 mph H 66%29.85 inHg

Friday

2:00 AM

Clear night

72° 💧 None 💨 2 mph H 77%29.85 inHg

5:00 AM

Clear night

69° 💧 None 💨 1 mph H 87%29.85 inHg

8:00 AM

Sunny

74° 💧 None 💨 2 mph H 71%29.88 inHg

11:00 AM

Sunny

88° 💧 None 💨 3 mph H 44%29.85 inHg

2:00 PM

Sunny

94° 💧 None 💨 8 mph H 35%29.80 inHg

5:00 PM

Sunny

89° 💧 None 💨 8 mph H 39%29.77 inHg

8:00 PM

Clear night

78° 💧 None 💨 5 mph H 57%29.80 inHg

11:00 PM

Clear night

73° 💧 None 💨 3 mph H 75%29.85 inHg

Saturday

2:00 AM

Clear night

69° 💧 None 💨 3 mph H 90%29.85 inHg

5:00 AM

Mostly clear night

67° 💧 None 💨 2 mph H 95%29.85 inHg

8:00 AM

Partly cloudy

70° 💧 None 💨 3 mph H 88%29.88 inHg

11:00 AM

Mostly sunny

81° 💧 None 💨 4 mph H 57%29.88 inHg

2:00 PM

Sunny

86° 💧 None 💨 7 mph H 44%29.85 inHg

5:00 PM

Sunny

82° 💧 None 💨 8 mph H 46%29.80 inHg

8:00 PM

Clear night

72° 💧 None 💨 6 mph H 66%29.83 inHg

11:00 PM

Clear night

68° 💧 None 💨 3 mph H 83%29.88 inHg

Sunday

2:00 AM

Clear night

66° 💧 None 💨 2 mph H 90%29.88 inHg

5:00 AM

Clear night

64° 💧 None 💨 1 mph H 97%29.85 inHg

8:00 AM

Sunny

66° 💧 None 💨 1 mph H 88%29.88 inHg

11:00 AM

Sunny

80° 💧 None 💨 3 mph H 49%29.85 inHg

2:00 PM

Sunny

89° 💧 None 💨 6 mph H 36%29.80 inHg

5:00 PM

Sunny

86° 💧 None 💨 9 mph H 42%29.74 inHg

11:00 PM

Clear night

70° 💧 None 💨 3 mph H 75%29.83 inHg

Monday

5:00 AM

Clear night

63° 💧 None 💨 2 mph H 96%29.83 inHg

11:00 AM

Sunny

82° 💧 None 💨 4 mph H 43%29.83 inHg

5:00 PM

Sunny

83° 💧 None 💨 9 mph H 45%29.77 inHg

11:00 PM

Clear night

67° 💧 None 💨 3 mph H 83%29.88 inHg

Tuesday

5:00 AM

Mostly clear night

63° 💧 None 💨 2 mph H 97%29.88 inHg

11:00 AM

Sunny

81° 💧 None 💨 3 mph H 47%29.94 inHg

5:00 PM

Sunny

81° 💧 None 💨 9 mph H 46%29.85 inHg

11:00 PM

Clear night

68° 💧 None 💨 3 mph H 75%29.97 inHg

Wednesday

5:00 AM

Clear night

61° 💧 None 💨 0 mph H 98%29.97 inHg

11:00 AM

Sunny

84° 💧 None 💨 3 mph H 35%29.97 inHg

5:00 PM

Sunny

88° 💧 None 💨 8 mph H 33%29.88 inHg

11:00 PM

Partly cloudy night

70° 💧 None 💨 3 mph H 71%30.00 inHg

Thursday

5:00 AM

Mostly cloudy night

64° 💧 None 💨 1 mph H 84%29.97 inHg

11:00 AM

Mostly cloudy

87° 💧 None 💨 3 mph H 31%29.97 inHg

5:00 PM

Mostly sunny

94° 💧 None 💨 9 mph H 24%29.88 inHg

11:00 PM

Clear night

75° 💧 None 💨 3 mph H 59%29.97 inHg

Friday

5:00 AM

Clear night

67° 💧 None 💨 0 mph H 87%29.94 inHg

11:00 AM

Sunny

91° 💧 None 💨 3 mph H 31%29.94 inHg

5:00 PM

Sunny

98° 💧 None 💨 8 mph H 24%29.83 inHg

11:00 PM

Clear night

80° 💧 None 💨 2 mph H 48%29.91 inHg

Saturday

5:00 AM

Clear night

73° 💧 None 💨 1 mph H 68%29.85 inHg

11:00 AM

Sunny

98° 💧 None 💨 1 mph H 22%29.85 inHg

5:00 PM

Sunny

99° 💧 None 💨 9 mph H 20%29.74 inHg

11:00 PM

Clear night

79° 💧 None 💨 3 mph H 40%29.83 inHg

Sunday

5:00 AM

Clear night

72° 💧 None 💨 1 mph H 54%29.80 inHg

11:00 AM

Sunny

94° 💧 None 💨 2 mph H 23%29.83 inHg

5:00 PM

Sunny

92° 💧 None 💨 7 mph H 30%29.74 inHg

11:00 PM

Clear night

74° 💧 None 💨 2 mph H 71%29.85 inHg

Monday

5:00 AM

Clear night

67° 💧 None 💨 1 mph H 96%29.85 inHg

11:00 AM

Sunny

91° 💧 None 💨 2 mph H 34%29.88 inHg

5:00 PM

Sunny

96° 💧 None 💨 8 mph H 28%29.83 inHg

11:00 PM

Mostly clear night

79° 💧 None 💨 2 mph H 56%29.91 inHg

Tuesday

5:00 AM

Clear night

74° 💧 None 💨 1 mph H 74%29.88 inHg

11:00 AM

Sunny

97° 💧 None 💨 2 mph H 24%29.91 inHg

5:00 PM

Sunny

100° 💧 None 💨 9 mph H 22%29.80 inHg

In Placentia and, more broadly, across the state of California: Clear skies are expected through the evening, with temperatures remaining warm, ranging from 79 to 89 degrees Fahrenheit. Winds will be light, coming from the northwest at speeds up to 7 mph, with occasional gusts reaching 8 mph. No rain is anticipated during this time, so conditions will be dry and calm. Temperatures will gradually cool as the night progresses but will stay comfortably warm. It’s a good evening for outdoor activities or relaxing outside, with clear views and gentle breezes. Make sure to stay hydrated if you're spending extended time outdoors. The weather will remain stable overnight, with no significant changes expected.

15-Day Weather Outlook for Placentia

TomorrowTomorrow

Partly cloudy 97°/73° 💧 None 💨 6 mph

Thursday, Sep 10Thu Sep 10

Sunny 95°/73° 💧 None 💨 6 mph

Friday, Sep 11Fri Sep 11

Mostly cloudy 91°/68° 💧 None 💨 7 mph

Saturday, Sep 12Sat Sep 12

Overcast 86°/66° 💧 0.001 in 💨 7 mph

Sunday, Sep 13Sun Sep 13

Mostly cloudy 80°/62° 💧 None 💨 9 mph

Monday, Sep 14Mon Sep 14

Mostly cloudy 85°/63° 💧 0.114 in 💨 8 mph

Tuesday, Sep 15Tue Sep 15

Sunny 84°/65° 💧 None 💨 9 mph

Wednesday, Sep 16Wed Sep 16

Sunny 86°/64° 💧 None 💨 8 mph

Thursday, Sep 17Thu Sep 17

Mostly sunny 86°/66° 💧 None 💨 9 mph

Friday, Sep 18Fri Sep 18

Sunny 84°/64° 💧 None 💨 9 mph

Saturday, Sep 19Sat Sep 19

Sunny 84°/61° 💧 None 💨 9 mph

Sunday, Sep 20Sun Sep 20

Mostly sunny 82°/62° 💧 None 💨 9 mph

Monday, Sep 21Mon Sep 21

Mostly sunny 81°/64° 💧 None 💨 9 mph

Tuesday, Sep 22Tue Sep 22

Mostly sunny 79°/62° 💧 None 💨 8 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Placentia

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Placentia

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 3:00 AM

PM2.5 Fine particles Good 5,0µg/m³

Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.

PM10 Particulate matter Good 10,6µg/m³

Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.

O₃ Ozone Fair 79,2µg/m³

Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.

NO₂ Nitrogen dioxide Good 1,5µg/m³

A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.

Air quality is acceptable for most people.

UV & HEALTH

UV, Sun & Health Outlook in Placentia

Maximum daily UV Today, tomorrow and the following day show the maximum UV index forecast for each day.

0–2 Low 3–5 Moderate 6–7 High 8–10 Very high 11+ Extreme

Today UV 9,2Very high 🙂Fair

Tomorrow UV 9,2Very high 😐Moderate

Thursday UV 9,1Very high 😐Moderate

Friday UV 8,9Very high 😐Moderate

Saturday UV 7,0High 🙂Fair

Sunday UV 7,0High —Unavailable

Monday UV 7,0High —Unavailable

Hourly UV index today

7:00 AMUV 0,0 8:00 AMUV 0,7 9:00 AMUV 2,0 10:00 AMUV 4,0 11:00 AMUV 6,0 12:00 PMUV 8,0 1:00 PMUV 9,2 2:00 PMUV 8,3 3:00 PMUV 6,3 4:00 PMUV 3,8 5:00 PMUV 1,6 6:00 PMUV 0,4

Today's weather health advice Open today's recommendations.

Very high UV risk

Use SPF 50+ sunscreen, a hat and sunglasses. Seek shade and limit exposure around midday.

Acceptable air quality

Air quality is acceptable for most people. Very sensitive people may want to reduce prolonged exertion.

Comfortable temperature conditions

Temperatures should feel comfortable for most people, with no particular heat or cold precautions needed.

Best in the morning or late in the day

For walking, running or cycling, prefer the early morning or late afternoon.

WIND OUTLOOK

Hourly Wind Forecast for Placentia

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · PLACENTIA, CALIFORNIA

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 3:00 AM–4:00 AM.

97/100Best-hour score

BEST TIME TONIGHT 3:00 AM–4:00 AM Astronomical darkness: 8:34 PM–5:05 AM

☁ Cloud cover 2% Real hourly forecast for the best viewing hour.

☾ Moonlight 13% Waning Crescent · Moon below the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 67° high at the best hour.

✦ Estimated visible meteors 2–4/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min78%

UPCOMING METEOR PERIODSStart, peak and end dates · weather should be checked closer to the peak.

SEP 5–SEP 21

September ε-PerseidsStart SEP 5 · Peak SEP 9 · End SEP 21 · ZHR 8 · 6% Moon at peak

ACTIVE NOW

SEP 20–NOV 20

Southern TauridsStart SEP 20 · Peak NOV 5 · End NOV 20 · ZHR 7 · 20% Moon at peak

UPCOMING

OCT 2–NOV 7

OrionidsStart OCT 2 · Peak OCT 21 · End NOV 7 · ZHR 20 · 77% Moon at peak

UPCOMING

OCT 20–DEC 10

Northern TauridsStart OCT 20 · Peak NOV 12 · End DEC 10 · ZHR 5 · 7% Moon at peak

UPCOMING

Experimental local observing estimate. Weather values come from the hourly forecast already used on this page. Moon position and astronomical darkness are calculated locally from time and coordinates. Meteor-shower ZHR describes ideal conditions and is not the number of meteors a person should expect to see locally.

DISCOVER WEATHER NEARBY Weather in other cities

Explore current conditions and forecasts for other locations.

Forecast data for Placentia were last refreshed today at 2:36 AM. The current forecast period extends through 10/09/2026 at 12:00 AM. Weather, air-quality and UV-index data are provided through WEATHER-INFO.COM. Forecasts are produced automatically from the latest available data and are subject to periodic technical checks. This service is intended for general weather information.