In the first week, San Diego can expect around 18–22 °C with 2 wet days (at least 1 mm). Warmest day: Saturday (31 Oct) at 22 °C; coldest night: Saturday (31 Oct) at 18 °C.
Weather models are reliable for the first few days, but small errors grow over time. That is why every day on this page is marked: days 1–3 are reliable, days 4–7 moderately so, and from day 8 onwards the forecast shows the direction of travel – a warmer or cooler spell, a wetter period – rather than the exact temperature of a given day.
In the first week, San Diego can expect around 18–22 °C with 2 wet days (at least 1 mm). Warmest day: Saturday (31 Oct) at 22 °C; coldest night: Saturday (31 Oct) at 18 °C.
The models show at least 1 mm of rain on 2 of the next 3 days. The wettest day looks like Sunday (1 Nov) with about 17.2 mm. From day 8 onwards this is a trend, not an exact daily figure.
Days 1–3 are usually reliable and days 4–7 moderately so. Beyond that the forecast shows the trend rather than exact daily values — check back each day.
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