Did you know???...
Palomar Mountain is the wettest place in San Diego County. The annual rainfall on Palomar Mountain September 30, 2018 to October 1, 2019 (NOAA National Weather Service Year) was 44.36 inches at the Weather Station near the Observatory. Annual average rainfall is 35 inches (1971-2001) per DPLU GIS. The San Diego County Flood Control District has 3 rain gauges on the mountain, Observatory, State Park Road Station, and Birch hill. These units are very accurate devices that are recalculated often. The National Weather Service and the County Flood Control gauges at the Observatory have recorded the same rainfall. The Flood Control gauges at the State Park Road Station and the Birch Hill locations are very similar in recorded rainfall. Note: Previous years have confirmed there is a notable difference between the State Park/Birch Hill stations and the Observatory. Example: This year 44.36 inches was recorded at the Observatory and 58.73 inches at the Birch Hill location (Yes that is almost 5 feet of rain).
The Birch Hill rain gauge is located at The Lodge.
Palomar Mountain Rain Birch Hill Sensor link below https://sandiego.onerain.com/sensor.php?site_id=92&device_id=1&view_id=2