Made contact on another forum with a Flight Service Specialist at the London Airport (NavCanada) and got a chance to visit them this afternoon - something I've been wanting to do for a long time. Got a quick rundown on what and how it is done. As we were outside looking at things it just started to rain so I got to sent my first official METAR report at 13:27 local time. Then was able to see it on sfws' Metar Decoder.
As expected, the observation location is just perferct for viewing distances and open for good sensor readings. Thanks to Paul C to accommodate...
SPECI CYXU 171727Z 30016G24KT 15SM -SHRA BKN032 BKN060 06/M01 A3006 RMK SC6SC1 CTV CLD EMBD SLP185=
CYXU - LONDON/ON
DATE - TIME
17 OCTOBER 2018 - 1727 UTC
300 TRUE @ 16 KNOTS
15 STAT. MILES
RUNWAY VISUAL RANGE
LIGHT RAIN SHOWER
BROKEN CLOUDS (5/8 - 7/8) 3200 FT
BROKEN CLOUDS (5/8 - 7/8) 6000 FT
TEMP / DEWPOINT
6 C / -1 C
30.06 IN HG