Skip to content


The Ultimeter driver operates the Ultimeter in Data Logger Mode, which results in sensor readings every 1/2 second or so.

The Ultimeter driver ignores the maximum, minimum, and average values recorded by the station.

Configuring with weectl device

The Ultimeter stations cannot be configured with the utility weectl device.

Station data

The following table shows which data are provided by the station hardware and which are calculated by WeeWX.

Ultimeter station data
Database Field Observation Loop Archive
barometer2 barometer H
pressure2 S
altimeter2 S
inTemp2 temperature_in H
outTemp temperature_out H
inHumidity2 humidity_in H
outHumidity humidity_out H
windSpeed wind_speed H
windDir wind_dir H
rain1 rain D
rain_total H
rainRate1 S
dewpoint S
windchill S
heatindex S

1 The rain and rainRate are available only on stations with the optional rain sensor.

2 Pressure, inside temperature, and inside humidity data are not available on all types of Ultimeter stations.

H indicates data provided by Hardware
D indicates data calculated by the Driver
S indicates data calculated by the StdWXCalculate Service