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Current weather in Rancho Santa Margarita is clear sky.

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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 · 11:14 PM

Rancho Santa Margarita Weather & Hourly Forecast

United States · California · 92688

64°F

Clear night

Feels like: 64°F

💧 Humidity 80% 🌡 Pressure 29.97 inHg 💨 Wind 4 mph 👁 Visibility 6.2 mi ☁ Clouds 0% ☀️ UV index 0.0 · Low 🌅 Sunrise 6:25 AM 🌇 Sunset 7:15 PM

Hourly Forecast for Rancho Santa Margarita

Tomorrow

12:00 AM

Clear night

64° 💧 None 💨 4 mph H 80%29.97 inHg

3:00 AM

Clear night

62° 💧 None 💨 5 mph H 77%29.94 inHg

6:00 AM

Clear night

60° 💧 None 💨 6 mph H 72%29.94 inHg

9:00 AM

Sunny

70° 💧 None 💨 7 mph H 53%29.94 inHg

12:00 PM

Sunny

80° 💧 None 💨 8 mph H 42%29.91 inHg

3:00 PM

Sunny

81° 💧 None 💨 10 mph H 43%29.88 inHg

6:00 PM

Sunny

75° 💧 None 💨 6 mph H 50%29.85 inHg

9:00 PM

Clear night

66° 💧 None 💨 3 mph H 81%29.88 inHg

Friday

12:00 AM

Clear night

63° 💧 None 💨 5 mph H 81%29.88 inHg

3:00 AM

Clear night

61° 💧 None 💨 6 mph H 77%29.88 inHg

6:00 AM

Clear night

59° 💧 None 💨 6 mph H 77%29.88 inHg

9:00 AM

Sunny

70° 💧 None 💨 4 mph H 51%29.91 inHg

12:00 PM

Sunny

79° 💧 None 💨 7 mph H 41%29.88 inHg

3:00 PM

Sunny

79° 💧 None 💨 10 mph H 46%29.85 inHg

6:00 PM

Sunny

74° 💧 None 💨 7 mph H 52%29.88 inHg

9:00 PM

Clear night

63° 💧 None 💨 3 mph H 80%29.94 inHg

Tomorrow

12:00 AM

Clear night

64° 💧 None 💨 4 mph H 80%29.97 inHg

1:00 AM

Clear night

64° 💧 None 💨 4 mph H 79%29.97 inHg

2:00 AM

Clear night

63° 💧 None 💨 4 mph H 78%29.97 inHg

3:00 AM

Clear night

62° 💧 None 💨 5 mph H 77%29.94 inHg

4:00 AM

Clear night

61° 💧 None 💨 5 mph H 75%29.94 inHg

5:00 AM

Clear night

60° 💧 None 💨 5 mph H 73%29.94 inHg

6:00 AM

Clear night

60° 💧 None 💨 6 mph H 72%29.94 inHg

7:00 AM

Sunny

62° 💧 None 💨 6 mph H 65%29.94 inHg

8:00 AM

Sunny

66° 💧 None 💨 7 mph H 57%29.97 inHg

9:00 AM

Sunny

70° 💧 None 💨 7 mph H 53%29.94 inHg

10:00 AM

Sunny

74° 💧 None 💨 7 mph H 48%29.94 inHg

11:00 AM

Sunny

77° 💧 None 💨 7 mph H 44%29.94 inHg

12:00 PM

Sunny

80° 💧 None 💨 8 mph H 42%29.91 inHg

1:00 PM

Sunny

81° 💧 None 💨 10 mph H 42%29.91 inHg

2:00 PM

Sunny

81° 💧 None 💨 10 mph H 43%29.88 inHg

3:00 PM

Sunny

81° 💧 None 💨 10 mph H 43%29.88 inHg

4:00 PM

Sunny

80° 💧 None 💨 9 mph H 44%29.85 inHg

5:00 PM

Sunny

79° 💧 None 💨 8 mph H 46%29.85 inHg

6:00 PM

Sunny

75° 💧 None 💨 6 mph H 50%29.85 inHg

7:00 PM

Sunny

70° 💧 None 💨 5 mph H 64%29.88 inHg

8:00 PM

Clear night

68° 💧 None 💨 3 mph H 76%29.88 inHg

9:00 PM

Clear night

66° 💧 None 💨 3 mph H 81%29.88 inHg

10:00 PM

Clear night

65° 💧 None 💨 4 mph H 82%29.88 inHg

11:00 PM

Clear night

64° 💧 None 💨 4 mph H 81%29.88 inHg

Friday

12:00 AM

Clear night

63° 💧 None 💨 5 mph H 81%29.88 inHg

1:00 AM

Clear night

62° 💧 None 💨 5 mph H 80%29.88 inHg

2:00 AM

Clear night

61° 💧 None 💨 5 mph H 78%29.88 inHg

3:00 AM

Clear night

61° 💧 None 💨 6 mph H 77%29.88 inHg

4:00 AM

Clear night

60° 💧 None 💨 6 mph H 77%29.88 inHg

5:00 AM

Clear night

59° 💧 None 💨 6 mph H 77%29.88 inHg

6:00 AM

Clear night

59° 💧 None 💨 6 mph H 77%29.88 inHg

7:00 AM

Sunny

61° 💧 None 💨 5 mph H 74%29.91 inHg

8:00 AM

Sunny

66° 💧 None 💨 4 mph H 60%29.91 inHg

9:00 AM

Sunny

70° 💧 None 💨 4 mph H 51%29.91 inHg

10:00 AM

Sunny

74° 💧 None 💨 5 mph H 44%29.91 inHg

11:00 AM

Sunny

78° 💧 None 💨 6 mph H 41%29.91 inHg

12:00 PM

Sunny

79° 💧 None 💨 7 mph H 41%29.88 inHg

1:00 PM

Sunny

80° 💧 None 💨 8 mph H 42%29.88 inHg

2:00 PM

Sunny

80° 💧 None 💨 9 mph H 44%29.88 inHg

3:00 PM

Sunny

79° 💧 None 💨 10 mph H 46%29.85 inHg

4:00 PM

Sunny

77° 💧 None 💨 9 mph H 47%29.85 inHg

5:00 PM

Sunny

76° 💧 None 💨 8 mph H 48%29.85 inHg

6:00 PM

Sunny

74° 💧 None 💨 7 mph H 52%29.88 inHg

7:00 PM

Sunny

69° 💧 None 💨 5 mph H 64%29.88 inHg

8:00 PM

Clear night

65° 💧 None 💨 4 mph H 76%29.91 inHg

9:00 PM

Clear night

63° 💧 None 💨 3 mph H 80%29.94 inHg

10:00 PM

Clear night

62° 💧 None 💨 2 mph H 82%29.94 inHg

11:00 PM

Clear night

62° 💧 None 💨 2 mph H 84%29.94 inHg

Saturday

12:00 AM

Clear night

62° 💧 None 💨 3 mph H 84%29.94 inHg

1:00 AM

Clear night

61° 💧 None 💨 3 mph H 83%29.91 inHg

2:00 AM

Clear night

61° 💧 None 💨 2 mph H 82%29.91 inHg

3:00 AM

Clear night

60° 💧 None 💨 2 mph H 80%29.91 inHg

4:00 AM

Clear night

61° 💧 None 💨 3 mph H 78%29.91 inHg

5:00 AM

Clear night

61° 💧 None 💨 3 mph H 77%29.88 inHg

6:00 AM

Clear night

60° 💧 None 💨 2 mph H 77%29.91 inHg

7:00 AM

Sunny

63° 💧 None 💨 3 mph H 70%29.91 inHg

8:00 AM

Sunny

70° 💧 None 💨 1 mph H 54%29.91 inHg

9:00 AM

Sunny

74° 💧 None 💨 2 mph H 45%29.91 inHg

10:00 AM

Sunny

78° 💧 None 💨 4 mph H 38%29.91 inHg

11:00 AM

Sunny

81° 💧 None 💨 6 mph H 33%29.91 inHg

12:00 PM

Sunny

83° 💧 None 💨 8 mph H 31%29.91 inHg

1:00 PM

Sunny

84° 💧 None 💨 10 mph H 31%29.91 inHg

2:00 PM

Sunny

84° 💧 None 💨 11 mph H 31%29.91 inHg

3:00 PM

Sunny

83° 💧 None 💨 11 mph H 32%29.88 inHg

4:00 PM

Sunny

81° 💧 None 💨 8 mph H 33%29.88 inHg

5:00 PM

Sunny

80° 💧 None 💨 7 mph H 35%29.88 inHg

6:00 PM

Sunny

77° 💧 None 💨 6 mph H 38%29.88 inHg

7:00 PM

Sunny

71° 💧 None 💨 4 mph H 49%29.91 inHg

8:00 PM

Clear night

67° 💧 None 💨 2 mph H 60%29.91 inHg

9:00 PM

Clear night

66° 💧 None 💨 1 mph H 61%29.91 inHg

10:00 PM

Clear night

65° 💧 None 💨 1 mph H 61%29.94 inHg

11:00 PM

Clear night

65° 💧 None 💨 1 mph H 60%29.91 inHg

Sunday

12:00 AM

Clear night

65° 💧 None 💨 1 mph H 58%29.91 inHg

1:00 AM

Clear night

65° 💧 None 💨 2 mph H 58%29.91 inHg

2:00 AM

Clear night

65° 💧 None 💨 2 mph H 58%29.88 inHg

3:00 AM

Clear night

65° 💧 None 💨 2 mph H 58%29.88 inHg

4:00 AM

Clear night

65° 💧 None 💨 3 mph H 56%29.88 inHg

5:00 AM

Clear night

65° 💧 None 💨 2 mph H 57%29.88 inHg

6:00 AM

Clear night

65° 💧 None 💨 2 mph H 57%29.88 inHg

7:00 AM

Sunny

68° 💧 None 💨 2 mph H 51%29.88 inHg

8:00 AM

Sunny

74° 💧 None 💨 1 mph H 41%29.91 inHg

9:00 AM

Sunny

77° 💧 None 💨 3 mph H 36%29.91 inHg

10:00 AM

Mostly sunny

79° 💧 None 💨 5 mph H 34%29.91 inHg

11:00 AM

Mostly sunny

81° 💧 None 💨 7 mph H 34%29.91 inHg

12:00 PM

Light rain

78° 💧 0.01 in 💨 8 mph H 42%29.94 inHg

1:00 PM

Overcast

77° 💧 None 💨 8 mph H 46%29.91 inHg

2:00 PM

Light rain

74° 💧 0.00 in 💨 9 mph H 55%29.91 inHg

3:00 PM

Overcast

73° 💧 None 💨 5 mph H 57%29.91 inHg

4:00 PM

Mostly cloudy

76° 💧 None 💨 7 mph H 50%29.88 inHg

5:00 PM

Mostly cloudy

76° 💧 None 💨 6 mph H 50%29.88 inHg

6:00 PM

Sunny

75° 💧 None 💨 5 mph H 54%29.88 inHg

7:00 PM

Sunny

69° 💧 None 💨 4 mph H 64%29.91 inHg

8:00 PM

Clear night

65° 💧 None 💨 2 mph H 73%29.91 inHg

9:00 PM

Clear night

64° 💧 None 💨 1 mph H 75%29.91 inHg

10:00 PM

Clear night

64° 💧 None 💨 2 mph H 75%29.94 inHg

11:00 PM

Clear night

63° 💧 None 💨 3 mph H 76%29.91 inHg

In Rancho Santa Margarita and, more broadly, across the state of California: Clear skies will persist into the evening, with temperatures remaining mild to warm, ranging from 73 to 81 degrees Fahrenheit. Winds will be moderate from the northwest, reaching up to 15 mph, with gusts up to 29 mph. No precipitation is expected during this time. Conditions will be relatively calm, making for a pleasant evening. Temperatures are likely to gradually cool as the night progresses, but it should stay dry and comfortable throughout the next few hours.

15-Day Weather Outlook for Rancho Santa Margarita

TomorrowTomorrow

Sunny 81°/60° 💧 None 💨 10 mph

Friday, Sep 4Fri Sep 4

Sunny 80°/59° 💧 None 💨 10 mph

Saturday, Sep 5Sat Sep 5

Sunny 84°/60° 💧 None 💨 11 mph

Sunday, Sep 6Sun Sep 6

Light rain 81°/63° 💧 0.01 in 💨 9 mph

Monday, Sep 7Mon Sep 7

Sunny 83°/61° 💧 None 💨 11 mph

Tuesday, Sep 8Tue Sep 8

Partly cloudy 82°/59° 💧 None 💨 9 mph

Wednesday, Sep 9Wed Sep 9

Mostly cloudy 79°/58° 💧 None 💨 8 mph

Thursday, Sep 10Thu Sep 10

Light rain 73°/56° 💧 0.01 in 💨 13 mph

Friday, Sep 11Fri Sep 11

Partly cloudy 74°/58° 💧 None 💨 10 mph

Saturday, Sep 12Sat Sep 12

Partly cloudy 77°/60° 💧 None 💨 10 mph

Sunday, Sep 13Sun Sep 13

Light rain 80°/60° 💧 0.05 in 💨 10 mph

Monday, Sep 14Mon Sep 14

Light rain 79°/62° 💧 0.01 in 💨 10 mph

Tuesday, Sep 15Tue Sep 15

Sunny 85°/62° 💧 None 💨 9 mph

Wednesday, Sep 16Wed Sep 16

Sunny 91°/67° 💧 None 💨 8 mph

Thursday, Sep 17Thu Sep 17

Sunny 97°/71° 💧 None 💨 9 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 12:00 AM

PM2.5 Fine particles Good 3,4µg/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 11,8µg/m³

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

O₃ Ozone Fair 85,3µg/m³

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

NO₂ Nitrogen dioxide Good 0,5µg/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 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 9,1Very high —Unavailable

Tomorrow UV 9,2Very high 🙂Fair

Friday UV 9,3Very high 🙂Fair

Saturday UV 6,5High 🙂Fair

Sunday UV 3,8Moderate 🙂Fair

Monday UV 6,0High —Unavailable

Tuesday UV 6,0High —Unavailable

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 11:14 PM. The current forecast period extends through 04/09/2026 at 9:00 PM. 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.