Weather WorldSantiago Reservoir, CA 7-Day Night Weather Forecast
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Santiago Reservoir, CA Weather Forecast
Santiago Reservoir, CA Weather Forecast Date: 1208 PM PDT Sat Aug 08 2026
The area/counties/county of: Orange County Inland Areas, including the cities of: Santa Ana, Anaheim, Garden Grove, Irvine, Orange, Fullerton, and Mission Viejo.or toggle through each period.
Tonight... Mostly clear this evening...Becoming partly cloudy. Patchy dense fog overnight. Lows 63 to 69. Areas of winds southwest to 10 mph this evening becoming light.
Sunday... Partly cloudy in the morning...Becoming mostly sunny. Highs 84 to 87 towards the coast to 89 to 93 farther inland. Light winds becoming southwest 10 mph in the afternoon.
Sunday Night... Partly cloudy. Patchy dense fog overnight. Lows 63 to 69. Areas of winds southwest to 10 mph in the evening becoming light.
Monday... Patchy fog in the morning. Partly cloudy. Highs around 84 towards the coast to 90 farther inland. Light winds becoming southwest 10 mph with gusts to 25 mph in the afternoon.
Monday Night... Partly cloudy. Patchy fog overnight. Lows 62 to 69. Areas of winds southwest to 10 mph in the evening becoming light.
Tuesday... Partly cloudy. Highs around 83 towards the coast to 87 farther inland.
Tuesday Night... Mostly clear in the evening...Becoming partly cloudy. Lows 61 to 69.
Wednesday... Partly cloudy. Highs 80 to 83 towards the coast to 85 farther inland.
Wednesday Night... Mostly clear in the evening...Becoming partly cloudy. Lows 59 to 68.
Thursday... Mostly cloudy in the morning...Becoming partly cloudy. Highs 80 to 83.
Thursday Night... Partly cloudy. Lows 59 to 67.
Friday... Mostly cloudy in the morning...Becoming partly cloudy. Highs 80 to 83.
Friday Night... Partly cloudy. Lows 58 to 67.
POP = Probability of Precipitation
Santiago Reservoir Radar Loop
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