weeWX: Installation on macOS systems

This is a guide to installing weeWX on macOS.


Download the source archive weewx-X.Y.Z.tar.gz from weewx.com/downloads.

Install prerequisites

Ensure that Python2 is installed. Python 2.6 or 2.7 will work, but Python 3 will not.

python -V

Install the required Python packages using easy_install:

sudo easy_install pysqlite
sudo easy_install configobj
sudo easy_install Cheetah
sudo easy_install PIL
sudo easy_install pyserial
sudo easy_install pyusb
sudo easy_install pyephem

Depending on the macOS and Python versions, you might have to use Pillow instead of PIL.

If the PIL or Cheetah installation fails, you might have to install xcode:

xcode-select --install

then try the easy_install again.

Install weeWX

Expand the source archive:

tar xvfz weewx-X.Y.Z.tar.gz

Change directory:

cd weewx-X.Y.Z

Modify home in setup.cfg to set the installation location to /Users/Shared/weewx

perl -pi -e 's%^home.*%home = /Users/Shared/weewx%' setup.cfg


python setup.py install

The installer will prompt for a location, latitude/longitude, altitude, station type, and parameters specific to the station.


Run the main program directly:

/Users/Shared/weewx/bin/weewxd weewx.conf

Or as a daemon automatically when the computer starts:

sudo cp /Users/Shared/weewx/util/launchd/com.weewx.weewxd.plist /Library/LaunchDaemons
sudo launchctl load /Library/LaunchDaemons/com.weewx.weewxd.plist


To make sure things are running properly, look in the system log for messages from weeWX. Run the Console application and select All Messages.


After about 5 minutes, open the station web page in a web browser. You should see your station information and data.


If your hardware supports hardware archiving, then how long you wait will depend on the archive interval set in your hardware.


To enable uploads such as Weather Underground or to customize reports, modify the configuration file /Users/Shared/weewx/weewx.conf. See the User Guide and Customization Guide for details.

WeeWX must be restarted for configuration file changes to take effect.


To start/stop weeWX:

sudo launchctl load /Library/LaunchDaemons/com.weewx.weewxd.plist
sudo launchctl unload /Library/LaunchDaemons/com.weewx.weewxd.plist


To uninstall, simply delete the directory /Users/Shared/weewx. This will delete weeWX, configuration files, and data.

rm -r /Users/Shared/weewx
sudo rm /Library/LaunchDaemons/com.weewx.weewxd.plist


The instructions above will result in the following layout:

executable: /Users/Shared/weewx/bin/weewxd
configuration file: /Users/Shared/weewx/weewx.conf
skins and templates: /Users/Shared/weewx/skins/
sqlite databases: /Users/Shared/weewx/archive/
generated web pages and images: /Users/Shared/weewx/public_html/
documentation: /Users/Shared/weewx/docs/
examples: /Users/Shared/weewx/examples/
utilities: /Users/Shared/weewx/bin/wee_*