I have looked into how the Dallas Semiconductor weather stations work and I don't think they are compatible with the 1 Wire Pi Plus as they use an RS232 serial port.
On this website I found some information about the 1 Wire Weather Station. Near the bottom of the page it lists the devices used in the weather station and it contains a DS2480 1-Wire to UART Serial Port Adapter which would be used to convert the 1 Wire bus to a serial bus.
In the help page for OWW under the devices section it says that you have to specify the serial port, for example /dev/ttyS0, so OWW is looking for an RS232 serial port as well.
There are a couple of options you can use to talk to your weather station.
You could use a UART to RS232 adapter like our Serial Pi Plus to talk to the weather station over the RS232 interface. This should allow you to use OWW.
The second option is to open up your weather station and locate the internal 1 Wire bus and connect this to your 1 Wire Pi Plus. The downside of this option is you wouldn't be able to use OWW so you would have to talk to the devices in the weather station directly using OWFS. You may have to remove the DS2480 from the weather station to make it work otherwise there would be two 1 Wire hosts on the same bus.
If you are a beginner to electronics then the first option will be easiest as it involves less soldering and you can use OWW to talk to the weather station.