Import your weewx history

If you have been running weewx, your station's whole history sits in its archive database. You can bring that history with you: imported records show up in the historical charts, the records page and the almanac, exactly as if Pro Weather had been collecting them all along.

What you need

• A PRO subscription or active trial (history is a PRO feature).
• Your weewx SQLite database file. On a standard install that is /var/lib/weewx/weewx.sdb (older installs: /home/weewx/archive/weewx.sdb). Copy it off the machine, e.g. scp pi@raspberrypi:/var/lib/weewx/weewx.sdb .
• Any browser on a desktop or laptop. The file is parsed locally in your browser - your database is never uploaded, only the observation values travel to us.

Run the import

1. Open Dashboard → your site → Connection.
2. Scroll to Import history from weewx and pick your weewx.sdb.
3. If your site has more than one station, choose which station the history belongs to. For hardware that uploads to us directly (the upload URL above the import card), that is your local (push) station.
4. Click Import history and leave the tab open. A multi-year archive takes a few minutes; you can watch the progress bar.

When it finishes, charts and records pick the new history up within a few minutes (caches refresh on their own).

Good to know

• Safe to re-run. Records that already exist - from live uploads or an earlier import - are never overwritten. If the import is interrupted, just run it again; already-imported records are skipped.
• All weewx unit systems work. US, METRIC and METRICWX databases (and even mixed ones) are converted automatically.
• What comes across: temperature, humidity, dew point, heat index, wind chill, barometer and station pressure, wind speed/gust/direction, wind run, rain and rain rate, solar radiation, UV, ET, indoor temperature and humidity, and particulate matter (PM1/PM2.5/PM10) where present.
• Old schemas are fine. Databases created with the classic wview schema simply lack some of those columns; whatever exists is imported.
• Keep weewx running if you like. Point its Wunderground uploader at your upload URL (see Connect your own hardware) and live data continues from where the import ends.

Using MySQL/MariaDB with weewx?

The importer reads SQLite files. Transfer your archive to SQLite first with weewx's own tool, then import the resulting file:

# weewx 5.x: define a sqlite binding in weewx.conf, then
weectl database transfer --dest-binding=sqlite_binding

The weewx documentation covers the transfer in detail under "weectl database".