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 Rancho Santa Margarita Weather Forecast Summary |
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Today
May 16th
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Sunday
May 17th
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Monday
May 18th
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Tuesday
May 19th
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Wednesday
May 20th
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Mostly Sunny |
Mostly Sunny |
Mostly Sunny |
Sunny |
Mostly Sunny |
67°F
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67°F
53°F |
68°F
53°F |
73°F
52°F |
76°F
56°F |
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| Rancho Santa Margarita Detailed Weather Forecast |
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| Saturday, May 16th, 2026 |
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Evening |
Temperature: 56°F |
| Mostly clear. |
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| Sunday, May 17th, 2026 |
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Overnight |
Temperature: 54°F |
| Mostly clear. |
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Morning |
Temperature: 61°F |
| A mix of sun and cloud. Windy at times. |
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Afternoon |
Temperature: 64°F |
| Mostly sunny. Windy at times. |
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Evening |
Temperature: 58°F |
| A mix of cloudy and clear skies. |
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| Monday, May 18th, 2026 |
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Overnight |
Temperature: 55°F |
| Mostly clear. Windy at times. |
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Morning |
Temperature: 62°F |
| Mostly sunny. |
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Afternoon |
Temperature: 66°F |
| Sunny. Windy at times. |
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Evening |
Temperature: 56°F |
| Mostly clear. |
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| Tuesday, May 19th, 2026 |
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Overnight |
Temperature: 53°F |
| Clear. |
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Morning |
Temperature: 67°F |
| Sunny. |
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Afternoon |
Temperature: 72°F |
| Sunny. Windy at times. |
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Evening |
Temperature: 59°F |
| Clear. |
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| Wednesday, May 20th, 2026 |
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Overnight |
Temperature: 56°F |
| Clear. |
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Morning |
Temperature: 71°F |
| Sunny. |
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Afternoon |
Temperature: 74°F |
| Sunny. Windy at times. |
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Evening |
Temperature: 60°F |
| Mostly clear. |
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| Thursday, May 21st, 2026 |
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Overnight |
Temperature: 56°F |
| Clear. |
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Morning |
Temperature: 71°F |
| Sunny. |
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Afternoon |
Temperature: 72°F |
| Sunny. |
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Evening |
Temperature: 60°F |
| Mostly clear. |
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| Friday, May 22nd, 2026 |
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Overnight |
Temperature: 57°F |
| Mostly clear. |
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Morning |
Temperature: 67°F |
| Mostly sunny. Windy at times. |
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Afternoon |
Temperature: 70°F |
| Mostly sunny. Windy at times. |
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Evening |
Temperature: 59°F |
| Mostly clear. |
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| Saturday, May 23rd, 2026 |
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Overnight |
Temperature: 56°F |
| Mostly clear. |
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Morning |
Temperature: 66°F |
| Sunny. Windy at times. |
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Afternoon |
Temperature: 68°F |
| Sunny with cloudy periods. Windy at times. |
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Evening |
Temperature: 58°F |
| Mostly clear. |
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| Sunday, May 24th, 2026 |
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Overnight |
Temperature: 56°F |
| A mix of cloudy and clear skies. |
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Morning |
Temperature: 63°F |
| Mostly cloudy. |
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Afternoon |
Temperature: 65°F |
| A mix of cloud and sun. Windy at times. |
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Evening |
Temperature: 59°F |
| A mix of cloudy and clear skies. |
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