January in Mira Mesa averages a daily high of 20.1°C with nights around 7.3°C. Expect roughly 7.3 wet days totalling 54.8mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Mira Mesa is April–October.
Based on SAN DIEGO MIRAMAR NAS, CA US (5.5km), 1995–2024. 19 years of January data.