Rancho Santa Margarita, CA Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Rancho Santa Margarita, CA in one place.
Sunny, with a high near 81. South wind 0 to 5 mph.
Local Weather Overview
This forecast page for Rancho Santa Margarita, CA is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Oct 19, 2026 12:02 AM PDT.
The active forecast window currently covers Oct 19 to Oct 25, 2026 for Rancho Santa Margarita, CA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 19 to Oct 25, 2026
- Latest sync
- Oct 19, 2026 12:02 AM PDT
- Forecast office
- SGX
- Source
- NOAA / NWS
Daily Outlook
This Week in Rancho Santa Margarita
Monday looks like the warmest upcoming period in Rancho Santa Margarita at 81 degrees F.
Thursday Night is the coolest period ahead with temperatures near 54 degrees F.
The strongest winds are forecast for Tuesday at about 0 to 10 mph S.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 19, 2026 12:02 AM PDT
- Coverage
- 7 days
- Time zone
- America/Los_Angeles
- Forecast office
- SGX
- Radar station
- KSOX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Patchy fog after 5am. Mostly clear, with a low around 61. Southeast wind 0 to 5 mph.
Patchy fog before 11am. Sunny, with a high near 79. South wind 0 to 10 mph.
A slight chance of rain after 5am. Partly cloudy, with a low around 60. South wind around 5 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
A chance of rain before 5pm, then showers and thunderstorms. Partly sunny, with a high near 73. Chance of precipitation is 80%.
Showers and thunderstorms. Cloudy, with a low around 57.
Rain showers. Mostly cloudy, with a high near 68.
A chance of rain showers before 11pm. Partly cloudy, with a low around 54.
Sunny, with a high near 70.
Mostly clear, with a low around 56.
Sunny, with a high near 77.
Mostly clear, with a low around 58.
Mostly sunny, with a high near 75.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Monday
Oct 19
|
Sunny
|
81°F |
0 to 5 mph
S
|
|
Monday Night
Oct 19
|
Mostly Clear then Patchy Fog
|
61°F |
0 to 5 mph
SE
|
|
Tuesday
Oct 20
|
Patchy Fog then Sunny
|
79°F |
0 to 10 mph
S
|
|
Tuesday Night
Oct 20
|
Partly Cloudy then Slight Chance Light Rain
|
60°F |
5 mph
S
|
|
Wednesday
Oct 21
|
Chance Light Rain then Showers And Thunderstorms
|
73°F |
5 to 10 mph
S
|
|
Wednesday Night
Oct 21
|
Showers And Thunderstorms
|
57°F |
5 to 10 mph
S
|
|
Thursday
Oct 22
|
Rain Showers
|
68°F |
5 mph
S
|
|
Thursday Night
Oct 22
|
Chance Rain Showers then Partly Cloudy
|
54°F |
5 mph
NW
|
|
Friday
Oct 23
|
Sunny
|
70°F |
0 to 5 mph
W
|
|
Friday Night
Oct 23
|
Mostly Clear
|
56°F |
5 mph
N
|
|
Saturday
Oct 24
|
Sunny
|
77°F |
0 to 5 mph
N
|
|
Saturday Night
Oct 24
|
Mostly Clear
|
58°F |
5 mph
NE
|
|
Sunday
Oct 25
|
Mostly Sunny
|
75°F |
5 mph
W
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Rancho Santa Margarita.
