We have a weather station setup on our trailer. Photos below
show the setup.  It measures temperature, humidity, rainfall,
barometric pressure, wind speed & direction.   Also keeps a
history so you can view previous weather. 

Click here to see our weather – For the current weather at our trailer.

Weather station pole in mounted on back of trailer.
WIFI Booster for our connection to RV Park WIFI is mounted on the ladder
The display in our trailer, also connects to internet so it can be checked remotely
Lower mount for weather station pole – 1 1/2″ aluminum angle
attached to trailer with 3M VHB tape. Hose clamp to hold pole.
Upper mount attached with 3M VHB tape – pole goes through slot at an angle and when brought upright it is held in place