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Lyon, CA Weather Forecast
Lyon, CA Weather Forecast Date: 1146 PM PDT Thu Sep 24 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.
Today... Mostly cloudy this morning...Becoming sunny. Highs around 78 towards the coast to 80 to 84 farther inland. Light winds becoming southwest 10 mph this afternoon.
Tonight... Mostly clear in the evening...Becoming partly cloudy overnight with patchy fog. Lows 64 to 69. Areas of winds southwest to 10 mph in the evening becoming light.
Friday... Partly cloudy with patchy fog in the morning...Becoming sunny. Highs around 85 towards the coast to 90 farther inland. Light winds becoming southwest 10 mph in the afternoon.
Friday Night... Partly cloudy. Patchy fog overnight. Lows 63 to 68. Areas of winds west to 10 mph in the evening becoming light.
Saturday... Partly cloudy in the morning...Becoming mostly sunny. Highs 85 to 88 towards the coast to 91 farther inland. Light winds becoming southwest 10 mph in the afternoon.
Saturday Night... Partly cloudy in the evening...Becoming mostly cloudy. Lows 64 to 69.
Sunday... Partly cloudy in the morning...Becoming mostly sunny. Highs 83 to 86.
Sunday Night... Mostly clear in the evening, then partly cloudy with a slight chance of showers overnight. Lows 61 to 67.
Monday... Partly cloudy in the morning...Becoming sunny. Highs 78 to 82.
Monday Night... Mostly clear. A slight chance of showers overnight. Lows 59 to 66.
Tuesday... Partly cloudy with a slight chance of showers in the morning, then mostly sunny in the afternoon. Highs 86 to 89.
Tuesday Night... Mostly clear. Lows 63 to 69.
POP = Probability of Precipitation
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