After a functioning WeeWX setup on RPi (or other), it should be emphasized the importance of Backup (as I was "saved" today....).
To those not yet familiar, the following are notes and easy process for the WeeWX and RPi backup:
1) WeeWX files
2) RPi SD card IMG clone - Windows
IMPORTANT!: upon plugging-in USB SD card into Windows a message will popup stating that can NOT recognize and/or need Format... DON'T DO IT! (just ignore); you can later certify that "Win32 Disk Imager" was in fact able to access and read your SD card by the size of file IMG created