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Bostonia, CA Weather Forecast
Bostonia, CA Weather Forecast Date: 1151 AM PDT Tue Aug 18 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 this evening...Becoming partly cloudy. Lows 65 to 70. Areas of winds west to 10 mph this evening becoming light.
Wednesday... Mostly sunny. Highs 87 to 92 in the western valleys to 95 to 100 near the foothills. Light winds becoming west 10 mph in the afternoon.
Wednesday Night... Mostly clear in the evening...Becoming partly cloudy. Lows 66 to 72. Light winds.
Thursday... Mostly sunny in the morning...Becoming partly cloudy. Highs 86 to 91 in the western valleys to 93 to 98 near the foothills. Light winds becoming west 10 mph in the afternoon.
Thursday Night... Partly cloudy. Lows 66 to 71. Light winds.
Friday... Partly cloudy. Patchy fog in the morning. A slight chance of showers and thunderstorms in the afternoon. Highs 87 to 92 in the western valleys to 93 to 98 near the foothills.
Friday Night... Mostly clear in the evening...Becoming partly cloudy. Lows 66 to 70.
Saturday... Partly cloudy in the morning...Becoming mostly sunny. Highs 86 to 91 in the western valleys to 91 to 96 near the foothills.
Saturday Night... Mostly clear. Lows 66 to 70.
Sunday... Partly cloudy in the morning...Becoming mostly sunny. A slight chance of showers. Highs 86 to 90 in the western valleys to 90 to 95 near the foothills.
Sunday Night... Mostly clear. Lows 65 to 69.
Monday... Partly cloudy in the morning...Becoming mostly sunny. Highs 85 to 90 in the western valleys to 90 to 95 near the foothills.
Monday Night... Mostly clear. Lows 65 to 69.
POP = Probability of Precipitation
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