HomeVision Controller Weather Variables

HomeVision controller Weather Variables can be updated with weather information. Table 4 shows what weather data is loaded into the Weather Variables.

Table 4 - HomeVision Controller Weather Variables

Control Variable	Description	HomeVision Variable
TempF/TempC1	Temperature	Current Outside Temperature
Humidity	Relative Humidity	Current Outside Relative Humidity
WindDegrees	Wind direction degrees	Wind Direction (digit 1 & digits 2-3)
Windxxx2	Wind speed	Current Wind Speed
Pressurexx3	Pressure	Current Barometric Pressure
PressureRateMb3	Pressure Change	Barometric Pressure Direction
WeatherIcon4	Weather Condition	User-selected HomeVision Controller Variable (1 variable)
ObservationTime	Time/date of observation	User-selected HomeVision Controller Variables (2-4 variables)
StationID	5 character StationID. If the Station ID is 4 characters, a space character is stored in the fifth location	User-selected HomeVision Controller Variables (5 variables)
FcPopm, FcPopnm5	Selected probability of precipitation, in percent, 0 - 100	User-selected HomeVision Controller Variable (1 variable)
Clouds	Cloud cover, in percent, 0 - 100	User-selected HomeVision Controller Variable (1 variable)

Notes:

¹ Current Outside Temperature is set to the temperature in either Fahrenheit or Celsius, depending on Temp Scale setting in the General Settings tab.

² Current Wind Speed is set to WindMPH, WindKPH, WindKTS, or WindBeaufort, depending on Wind Speed setting in the General Settings tab.

³ Current Barometric Pressure is set to inches, millibars or millimeters, depending on Pressure setting in the General Settings tab. Due to the way the HomeVision controller stores pressure (in the form of "xx.yy"), values in millibars are actually stored as "decibars", while values in millimeters are stored in centimeters. Note: The HomeVision controller's Rising/Falling/Steady condition is not supported and is not set.

⁴ See Table 5 below for weather condition codes.

⁵ Requires forecasts to be enabled. The rest of these items are current weather.

If a "standard" (the first 6 in Table 4) weather item value falls outside of the range supported by the HomeVision controller, or is indicated as not available, the variable is set to a "255", and will be displayed on the Weather TV screen as blanks.

HomeVision Controller Weather Variable Setup

• Open the Configuration dialog: Plugins->Weather.
• Select the HV Vars tab and make sure Enable Update in the HomeVision Controller Weather Variable Update section is checked. The first 6 items in Table 4 will be written to the HomeVision controller during future fetches.
  
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• To load the remainder of the possible items into the HomeVision controller, choose a HomeVision controller variable to use for each item desired. Leave any item set to "None" to prevent its loading to the HomeVision controller.
• The Weather Condition variable will be loaded with a code corresponding to the current weather conditions in Table 5.
• Observation time and date are loaded as separate items, stored in two variables each: minutes, hours for the time, and day, month for the date.
• The plug-in automatically checks to make sure there is room to store the data, and that none of the items overlap. If there is overflow (past the end of the defined variables) or overlap with another weather item, one or more of the variables will be reset to "None". Select another variable to avoid the conflict.
• While the plug-in prevents overflow and overlap, the specific HV variables to use must be determined with care to make sure that they are not used by any other unrelated function in the schedule. Pay particular attention to the multi-variable items (observation time and date, StationID) to avoid overlapping with other variable usage.

Weather Condition Code

The Weather Condition code is derived from the current weather icon (NWS) or weather type (OpenWeather) as shown in Table 5. For a more complete description of the possible weather conditions associated with a particular NWS icon, see http://www.weather.gov/data/current_obs/weather.php.

OpenWeather icons are mapped into the original 28 conditions as appropriate. Additional codes have been added for OpenWeather conditions that don't quite match the original 28.

• Blanks in the OpenWeather columns mean there is no close, equivalent match to NWS conditions.
• Blanks in the NWS Icon column mean that this OpenWeather description has no direct NWS equivalent, but is assigned to a similar code.
• Codes above 28 are new and mean that the OpenWeather description has no direct NWS equivalent, and does not match any of the existing codes.

You can find OpenWeather conditions at OpenWeather Icon Descriptions.

Some OpenWeather icons may have a "day" and "night" version. E.g., "01d" and "01n".

Table 5 - Weather Condition Codes

Code	Weather Conditions	NWS Icon	OpenWeather
			Code	Icon
0	Unknown	na
1	Fair/Clear	skc/nskc	800	01d
2	A Few Clouds	few/nfew	801	02d
3	Partly Cloudy	sct/nsct	802	03d
4	Mostly Cloudy	bkn/nbkn	803	04d
5	Overcast	ovc/novc	804	04d
6	Fog	fg/nfg	741	50d
7	Windy/Breezy	wind/nwind
8	Rain Showers	shra	521	09d
9	Showers in Vicinity	hi_shwrs/hi_nshwrs	521	10d
9	Ragged Shower Rain		531	10d
10	Light Rain/Drizzle	ra1	500	10d
10	Light Intensity Drizzle		300	09d
10	Drizzle		301	09d
10	Heavy Intensity Drizzle		302	09d
10	Light Intensity Drizzle Rain		310	09d
10	Drizzle Rain		311	09d
10	Heavy Intensity Drizzle Rain		312	09d
10	Shower Rain And Drizzle		313	09d
10	Heavy Shower Rain And Drizzle		314	09d
10	Shower Drizzle		321	09d
10	Light Rain		500	10d
10	Light Intensity Shower Rain		520	09d
11	Rain/Heavy Rain	ra/nra
11	Moderate Rain		501	10d
11	Heavy Intensity Rain		502	10d
11	Very Heavy Rain		503	10d
11	Extreme Rain		504	10d
11	Heavy Intensity Shower Rain		522	09d
11	Ragged Shower Rain		531	09d
12	Rain/Ice Pellets	raip/nraip
13	Rain/Freezing Rain, Drizzle	fzrara
14	Freezing Rain	fzra	511	13d
14	Sleet		611	13d
14	Light Shower Sleet		612	13d
14	Shower Sleet		613	13d
15	Freezing Rain/Snow	mix/nmix
16	Rain/Snow	rasn/nrasn	616	50d
16	Light Rain And Snow		615	13d
17	Snow	sn/nsn	601	50d
17	Light Snow		600	13d
17	Heavy Snow		602	13d
17	Light Shower Snow		620	13d
17	Shower Snow		621	13d
17	Heavy Shower Snow		622	13d
18	Ice Pellets/Hail	ip
19	Thunderstorm in Vicinity	hi_tsra/hi_ntsra
20	Scattered Thunderstorms	scttsra/nscttrsa
21	Thunderstorm	tsra/ntsra	211	11d
21	Thunderstorm With Light Rain		200	11d
21	Thunderstorm With Rain		201	11d
21	Thunderstorm With Heavy Rain		202	11d
21	Light Thunderstorm		210	11d
21	Heavy Thunderstorm		212	11d
21	Ragged Thunderstorm		221	11d
21	Thunderstorm With Light Drizzle		230	11d
21	Thunderstorm With Drizzle		231	11d
21	Thunderstorm With Heavy Drizzle		232	11d
22	Tornado/Water Spout	nsvrtsra	781	50d
23	Haze	mist	721	50d
23	Mist		701	50d
24	Smoke	smoke/fu	711	50d
25	Sand/Dust Whirls		731	50d
25	Sand		751	50d
25	Dust/Sand	dust	761	50d
25	Dust		761	50d
26	Blizzard	blizzard
27	Cold	cold
28	Hot	hot
30	Volcanic Ash		762	50d
31	Squalls		771	50d

Next:
Local Weather Data Files
Speaking Weather Data
Triggering Weather Fetches
Weather Websockets
Custom Objects and Websockets
Weather Info for NetIO
Weather with MQTT
See Also:
Introduction to the Weather Plug-in
Web-Based Weather Data
Using Weather Control Variables
Forecast Examples
Disclaimer