OK. I am neither much of a scripter or proficient in math, but I cribbed the snippets above from multiple sources out there and worked for days to get it to work the way I wanted to. That last bit was defying my admittedly derivative scripting efforts. I applied the llRound function in a few other places, too. Appreciate all the help!
In case anyone's interested, this is what displays in my chat window when the thermometer is touched:
..::: Isla De Castaña Weather:::.
Temperature:
74 °F (23 °C)
Barometric Pressure:
0.030128 ”/Hg (0.102024 kPa)
Wind Speed:
18 mph
8 m/S
15 kts
Wind Direction: 277°
(N=0°, E=90°, S=180°, W=270°).
Cloud coverage: 69%.
Chance of rain: 64%.
Have a nice day! 😃