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Rainbow, CA Weather Forecast
Rainbow, CA Weather Forecast Date: 1209 PM PDT Sun Oct 25 2026
The area/counties/county of: San Diego County Valleys, including the cities of: Escondido, El Cajon, San Marcos, La Mesa, Santee, and Poway.or toggle through each period.
Tonight... Mostly clear. Lows 54 to 59. Light winds.
Monday... Sunny. Highs 79 to 82 in the western valleys to 75 to 80 near the foothills. Light winds becoming west 10 to 15 mph in the afternoon.
Monday Night... Mostly clear. Lows 52 to 56. Areas of winds northwest to 10 mph in the evening becoming light.
Tuesday... Mostly sunny. Highs 74 to 79. Light winds becoming west 10 mph in the afternoon.
Tuesday Night... Mostly clear in the evening...Becoming partly cloudy overnight with patchy fog. Lows 51 to 56. Light winds.
Wednesday... Patchy fog in the morning. Partly cloudy. Highs 73 to 76 in the western valleys to 69 to 74 near the foothills.
Wednesday Night... Partly cloudy in the evening...Becoming mostly cloudy. Lows 52 to 57.
Thursday... Mostly cloudy. Highs 71 to 75 in the western valleys to 66 to 71 near the foothills.
Thursday Night... Partly cloudy in the evening, then mostly cloudy with a slight chance of showers overnight. Lows 53 to 58.
Friday... Mostly cloudy in the morning...Becoming partly cloudy. A slight chance of showers. Highs 70 to 73 in the western valleys to 63 to 68 near the foothills.
Friday Night... Partly cloudy in the evening...Becoming mostly cloudy. A chance of showers. Lows 51 to 56.
Saturday... Mostly cloudy in the morning...Becoming partly cloudy. A chance of showers. Highs around 70 in the western valleys to 61 to 66 near the foothills.
Saturday Night... Partly cloudy with a slight chance of showers in the evening, then mostly cloudy with showers likely overnight. Lows 50 to 56.
POP = Probability of Precipitation
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