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Current weather in Rancho Santa Margarita is overcast clouds.

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

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Weather data for Rancho Santa Margarita is updated regularly with the latest available observations and forecasts.

Now · 8:03 AM

Rancho Santa Margarita Weather & Hourly Forecast

United States · California · 92688

76°F

Overcast

Feels like: 77°F

💧 Humidity 81% 🌡 Pressure 29.85 inHg 💨 Wind 3 mph 👁 Visibility 6.2 mi ☁ Clouds 100% ☀️ UV index 6.0 · High 🌅 Sunrise 6:21 AM 🌇 Sunset 7:21 PM

Hourly Forecast for Rancho Santa Margarita

Today

9:00 AM

Overcast

76° 💧 None 💨 3 mph H 81%29.85 inHg

12:00 PM

Overcast

87° 💧 None 💨 8 mph H 56%29.88 inHg

3:00 PM

Mostly cloudy

94° 💧 None 💨 9 mph H 40%29.85 inHg

6:00 PM

Sunny

88° 💧 None 💨 6 mph H 46%29.83 inHg

9:00 PM

Clear night

79° 💧 None 💨 1 mph H 68%29.85 inHg

Tomorrow

12:00 AM

Clear night

76° 💧 None 💨 3 mph H 74%29.88 inHg

3:00 AM

Mostly cloudy night

75° 💧 None 💨 4 mph H 68%29.85 inHg

6:00 AM

Clear night

73° 💧 None 💨 1 mph H 79%29.88 inHg

9:00 AM

Sunny

84° 💧 None 💨 4 mph H 41%29.88 inHg

12:00 PM

Mostly sunny

92° 💧 None 💨 7 mph H 37%29.88 inHg

3:00 PM

Sunny

93° 💧 None 💨 10 mph H 35%29.83 inHg

6:00 PM

Sunny

88° 💧 None 💨 8 mph H 43%29.83 inHg

9:00 PM

Clear night

77° 💧 None 💨 3 mph H 68%29.85 inHg

Sunday

12:00 AM

Clear night

72° 💧 None 💨 3 mph H 69%29.85 inHg

3:00 AM

Clear night

70° 💧 None 💨 4 mph H 73%29.85 inHg

6:00 AM

Clear night

70° 💧 None 💨 5 mph H 74%29.85 inHg

Today

9:00 AM

Overcast

76° 💧 None 💨 3 mph H 81%29.85 inHg

10:00 AM

Overcast

79° 💧 None 💨 5 mph H 74%29.85 inHg

11:00 AM

Overcast

83° 💧 None 💨 5 mph H 65%29.88 inHg

12:00 PM

Overcast

87° 💧 None 💨 8 mph H 56%29.88 inHg

1:00 PM

Overcast

92° 💧 None 💨 9 mph H 48%29.85 inHg

2:00 PM

Overcast

93° 💧 None 💨 9 mph H 40%29.85 inHg

3:00 PM

Mostly cloudy

94° 💧 None 💨 9 mph H 40%29.85 inHg

4:00 PM

Mostly cloudy

95° 💧 None 💨 8 mph H 40%29.83 inHg

5:00 PM

Mostly cloudy

93° 💧 None 💨 7 mph H 41%29.83 inHg

6:00 PM

Sunny

88° 💧 None 💨 6 mph H 46%29.83 inHg

7:00 PM

Sunny

84° 💧 None 💨 4 mph H 55%29.85 inHg

8:00 PM

Clear night

80° 💧 None 💨 2 mph H 65%29.85 inHg

9:00 PM

Clear night

79° 💧 None 💨 1 mph H 68%29.85 inHg

10:00 PM

Clear night

78° 💧 None 💨 2 mph H 68%29.88 inHg

11:00 PM

Clear night

77° 💧 None 💨 3 mph H 71%29.88 inHg

Tomorrow

12:00 AM

Clear night

76° 💧 None 💨 3 mph H 74%29.88 inHg

1:00 AM

Partly cloudy night

75° 💧 None 💨 1 mph H 76%29.88 inHg

2:00 AM

Mostly cloudy night

75° 💧 None 💨 4 mph H 75%29.88 inHg

3:00 AM

Mostly cloudy night

75° 💧 None 💨 4 mph H 68%29.85 inHg

4:00 AM

Partly cloudy night

75° 💧 None 💨 1 mph H 70%29.85 inHg

5:00 AM

Mostly cloudy night

73° 💧 None 💨 2 mph H 75%29.88 inHg

6:00 AM

Clear night

73° 💧 None 💨 1 mph H 79%29.88 inHg

7:00 AM

Sunny

75° 💧 None 💨 4 mph H 65%29.88 inHg

8:00 AM

Sunny

80° 💧 None 💨 4 mph H 48%29.88 inHg

9:00 AM

Sunny

84° 💧 None 💨 4 mph H 41%29.88 inHg

10:00 AM

Sunny

89° 💧 None 💨 7 mph H 42%29.88 inHg

11:00 AM

Sunny

92° 💧 None 💨 6 mph H 41%29.88 inHg

12:00 PM

Mostly sunny

92° 💧 None 💨 7 mph H 37%29.88 inHg

1:00 PM

Sunny

93° 💧 None 💨 9 mph H 34%29.85 inHg

2:00 PM

Sunny

92° 💧 None 💨 11 mph H 35%29.85 inHg

3:00 PM

Sunny

93° 💧 None 💨 10 mph H 35%29.83 inHg

4:00 PM

Sunny

95° 💧 None 💨 9 mph H 36%29.80 inHg

5:00 PM

Sunny

93° 💧 None 💨 8 mph H 37%29.80 inHg

6:00 PM

Sunny

88° 💧 None 💨 8 mph H 43%29.83 inHg

7:00 PM

Sunny

83° 💧 None 💨 5 mph H 51%29.83 inHg

8:00 PM

Clear night

79° 💧 None 💨 5 mph H 62%29.83 inHg

9:00 PM

Clear night

77° 💧 None 💨 3 mph H 68%29.85 inHg

10:00 PM

Clear night

76° 💧 None 💨 2 mph H 68%29.85 inHg

11:00 PM

Clear night

74° 💧 None 💨 3 mph H 68%29.85 inHg

Sunday

12:00 AM

Clear night

72° 💧 None 💨 3 mph H 69%29.85 inHg

1:00 AM

Clear night

71° 💧 None 💨 3 mph H 71%29.85 inHg

2:00 AM

Clear night

70° 💧 None 💨 4 mph H 71%29.85 inHg

3:00 AM

Clear night

70° 💧 None 💨 4 mph H 73%29.85 inHg

4:00 AM

Clear night

70° 💧 None 💨 4 mph H 74%29.85 inHg

5:00 AM

Clear night

70° 💧 None 💨 5 mph H 73%29.85 inHg

6:00 AM

Clear night

70° 💧 None 💨 5 mph H 74%29.85 inHg

7:00 AM

Sunny

72° 💧 None 💨 4 mph H 68%29.88 inHg

8:00 AM

Partly cloudy

77° 💧 None 💨 4 mph H 57%29.88 inHg

9:00 AM

Mostly cloudy

81° 💧 None 💨 5 mph H 48%29.88 inHg

10:00 AM

Mostly cloudy

84° 💧 None 💨 6 mph H 41%29.88 inHg

11:00 AM

Mostly cloudy

86° 💧 None 💨 7 mph H 37%29.85 inHg

12:00 PM

Mostly cloudy

87° 💧 None 💨 8 mph H 36%29.85 inHg

1:00 PM

Partly cloudy

88° 💧 None 💨 9 mph H 34%29.85 inHg

2:00 PM

Partly cloudy

87° 💧 None 💨 10 mph H 31%29.83 inHg

3:00 PM

Partly cloudy

87° 💧 None 💨 9 mph H 31%29.83 inHg

4:00 PM

Mostly sunny

86° 💧 None 💨 8 mph H 31%29.83 inHg

5:00 PM

Mostly sunny

84° 💧 None 💨 7 mph H 32%29.83 inHg

6:00 PM

Sunny

81° 💧 None 💨 7 mph H 37%29.83 inHg

7:00 PM

Sunny

75° 💧 None 💨 5 mph H 50%29.83 inHg

8:00 PM

Clear night

69° 💧 None 💨 4 mph H 65%29.85 inHg

9:00 PM

Clear night

66° 💧 None 💨 3 mph H 71%29.85 inHg

10:00 PM

Clear night

66° 💧 None 💨 3 mph H 74%29.88 inHg

11:00 PM

Clear night

65° 💧 None 💨 4 mph H 75%29.85 inHg

Monday

12:00 AM

Clear night

65° 💧 None 💨 4 mph H 73%29.88 inHg

1:00 AM

Clear night

64° 💧 None 💨 4 mph H 72%29.88 inHg

2:00 AM

Clear night

64° 💧 None 💨 4 mph H 70%29.88 inHg

3:00 AM

Clear night

64° 💧 None 💨 4 mph H 69%29.85 inHg

4:00 AM

Clear night

63° 💧 None 💨 5 mph H 68%29.85 inHg

5:00 AM

Clear night

63° 💧 None 💨 4 mph H 69%29.85 inHg

6:00 AM

Clear night

62° 💧 None 💨 4 mph H 69%29.88 inHg

7:00 AM

Sunny

66° 💧 None 💨 4 mph H 63%29.88 inHg

8:00 AM

Sunny

72° 💧 None 💨 3 mph H 50%29.91 inHg

9:00 AM

Sunny

76° 💧 None 💨 4 mph H 41%29.88 inHg

10:00 AM

Sunny

80° 💧 None 💨 5 mph H 36%29.88 inHg

11:00 AM

Sunny

82° 💧 None 💨 6 mph H 34%29.88 inHg

12:00 PM

Sunny

83° 💧 None 💨 7 mph H 34%29.88 inHg

1:00 PM

Sunny

84° 💧 None 💨 8 mph H 34%29.88 inHg

2:00 PM

Sunny

84° 💧 None 💨 9 mph H 34%29.85 inHg

3:00 PM

Sunny

83° 💧 None 💨 9 mph H 34%29.85 inHg

4:00 PM

Sunny

82° 💧 None 💨 9 mph H 34%29.85 inHg

5:00 PM

Sunny

80° 💧 None 💨 9 mph H 37%29.85 inHg

6:00 PM

Sunny

77° 💧 None 💨 6 mph H 40%29.85 inHg

7:00 PM

Sunny

72° 💧 None 💨 6 mph H 50%29.85 inHg

8:00 PM

Clear night

66° 💧 None 💨 4 mph H 64%29.88 inHg

9:00 PM

Clear night

64° 💧 None 💨 2 mph H 68%29.88 inHg

10:00 PM

Clear night

64° 💧 None 💨 2 mph H 68%29.91 inHg

11:00 PM

Clear night

64° 💧 None 💨 3 mph H 66%29.91 inHg

Tuesday

12:00 AM

Clear night

63° 💧 None 💨 3 mph H 66%29.91 inHg

1:00 AM

Clear night

63° 💧 None 💨 2 mph H 66%29.91 inHg

2:00 AM

Clear night

62° 💧 None 💨 1 mph H 69%29.91 inHg

3:00 AM

Clear night

62° 💧 None 💨 1 mph H 69%29.91 inHg

4:00 AM

Clear night

62° 💧 None 💨 1 mph H 67%29.91 inHg

5:00 AM

Clear night

62° 💧 None 💨 1 mph H 66%29.88 inHg

6:00 AM

Clear night

61° 💧 None 💨 1 mph H 66%29.91 inHg

7:00 AM

Sunny

65° 💧 None 💨 1 mph H 57%29.91 inHg

8:00 AM

Sunny

72° 💧 None 💨 1 mph H 42%29.94 inHg

In Rancho Santa Margarita and, more broadly, across the state of California: This morning will start with mostly cloudy skies and temperatures ranging from the mid-70s to low 80s. Winds from the northwest will be moderate, with speeds up to 16 mph and gusts reaching 23 mph. As the day progresses, the cloud cover will persist, but no rain is expected. Temperatures are likely to rise slightly, reaching into the low to mid-80s by afternoon. Winds will continue from the northwest, maintaining moderate speeds. Overall, it will be a mild to warm day with mostly cloudy conditions and steady breezes.

15-Day Weather Outlook for Rancho Santa Margarita

TomorrowTomorrow

Mostly sunny 95°/73° 💧 None 💨 11 mph

Sunday, Aug 30Sun Aug 30

Mostly cloudy 88°/65° 💧 None 💨 10 mph

Monday, Aug 31Mon Aug 31

Sunny 84°/62° 💧 None 💨 9 mph

Tuesday, Sep 1Tue Sep 1

Sunny 86°/62° 💧 None 💨 10 mph

Wednesday, Sep 2Wed Sep 2

Sunny 87°/64° 💧 None 💨 10 mph

Thursday, Sep 3Thu Sep 3

Sunny 85°/64° 💧 None 💨 10 mph

Friday, Sep 4Fri Sep 4

Sunny 81°/63° 💧 None 💨 10 mph

Saturday, Sep 5Sat Sep 5

Light rain 86°/63° 💧 0.01 in 💨 11 mph

Sunday, Sep 6Sun Sep 6

Sunny 89°/67° 💧 None 💨 10 mph

Monday, Sep 7Mon Sep 7

Overcast 88°/68° 💧 None 💨 9 mph

Tuesday, Sep 8Tue Sep 8

Sunny 94°/70° 💧 None 💨 10 mph

Wednesday, Sep 9Wed Sep 9

Sunny 99°/74° 💧 None 💨 10 mph

Thursday, Sep 10Thu Sep 10

Sunny 100°/76° 💧 None 💨 9 mph

Friday, Sep 11Fri Sep 11

Sunny 93°/71° 💧 None 💨 11 mph

Saturday, Sep 12Sat Sep 12

Sunny 89°/66° 💧 None 💨 8 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Rancho Santa Margarita

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Rancho Santa Margarita

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 9:00 AM

PM2.5 Fine particles Fair 23,0µg/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 Fair 33,2µg/m³

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

O₃ Ozone Fair 74,8µg/m³

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

NO₂ Nitrogen dioxide Good 0,8µg/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 Rancho Santa Margarita

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 9,0Very high 🙂Fair

Tomorrow UV 7,0High 😷Poor

Sunday UV 6,0High 😐Moderate

Monday UV 6,0High 😐Moderate

Tuesday UV 6,0High 🙂Fair

Wednesday UV 6,0High —Unavailable

Thursday UV 6,0High —Unavailable

Hourly UV index today

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

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 Rancho Santa Margarita

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

Internal PR simulation: 4.61 Population: 46,990

DISCOVER WEATHER NEARBY Weather in other cities

Explore current conditions and forecasts for other locations.

Forecast data for Rancho Santa Margarita were last refreshed today at 8:03 AM. The current forecast period extends through 30/08/2026 at 6:00 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.