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Weather station scripts - Forecast Canada

They're free, but use at your own risk

The scripts referenced here are used in the operation of this weather station, and may be freely copied and used to support your station. Please note that you use these scripts at your own risk. No warranty is expressed or implied. I accept no liability for any damages that may ensue from their use.
You will need to configure them for your own particular weather station website.
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Thanks for your kind support!

A Version History is available -- check back from time to time to see if there are updates to scripts you have downloaded earlier. Announcements of version updates and new scripts are made on WXForum.net and Weather-Watch forums and saratogaWXPHP Twitter account as they become available.

This page was updated Wednesday, 27-Sep-2017 12:20 PM

Environment Canada forecast script (for www.weatheroffice.gc.ca)

This script is along the lines of the carterlake.org NOAA 5-day script especially for the Canadian stations using Environment Canada as the source of the data. It uses a new set of customized icons with PoP displayed like the www.crh.noaa.gov website used by Tom's script. Examples:

Partly Cloudy PoP: 40% ==> Partly Cloudy
Rain and snow PoP: 100% ==> Rain and snow
Thunderstorm PoP: 70% ==> Thunderstorm

To use it, you need to download the ec-forecast-V5-00.zip file and unzip, then upload to your website. The scripts and GIF icons are included in the zip file. The script also requires the URL for the printable forecast for your area. Instructions are included with the source file and the ec-forecast-README.txt for the script.

As of V2.16, ec-forecast.php now supports the new transparent PNG icons created by Thayer Fox who has kindly permitted distribution from this site.
As of V3.00, the ZIP version contains these PNG icons.

Partly Cloudy PoP: 40% ==> Partly Cloudy
Rain and snow PoP: 100% ==> Rain and snow
Thunderstorm PoP: 70% ==> Thunderstorm

Download and unpack the ec-icons-png.zip and configure the ec-forecast.php to use the .png images in the settings area.

The script supports both English and French languages via the lang=en or lang=fr parameter. A live example of the French version (with lang=fr) is shown below.

Observed at: Hamilton Munro Int'l Airport
Date: Saturday October 21, 2017 at 00:00 EDT
Mainly Clear
Mainly Clear
Temp.: 9.2 °C
Wind: SW 8 km/h
Humidity: 64 %
Dew point: 2.8 °C
Pressure: 102.3 kPa
Tendency: rising
Visibility: 24.1 km
Sunrise: 07:41
Sunset: 18:28
Normals:
Max 12°C Min 3°C
Yesterday
  Max: 20.4 °C
  Min: 5.8 °C
  Rainfall: 0.0 mm

 Extended Forecast - Environment Canada
  Saturday
Increasing cloudiness
Increasing cloudiness
Max: 21°C
Sunday
Sunny
Sunny
Max: 21°C
Monday
Chance of showers (30%)
Chance of showers
Max: 19°C
Tuesday
Periods of rain
Periods of rain
Max: 14°C
Wednesday
Chance of showers (40%)
Chance of showers
Max: 10°C
Thursday
A mix of sun and cloud
A mix of sun and cloud
Max: 10°C
Friday night
Clear
Clear
Min: 9°C
Saturday night
Partly cloudy
Partly cloudy
Min: 12°C
Sunday night
Cloudy periods
Cloudy periods
Min: 15°C
Monday night
Periods of rain
Periods of rain
Min: 10°C
Tuesday night
Chance of showers (40%)
Chance of showers
Min: 7°C
Wednesday night
Chance of showers (30%)
Chance of showers
Min: 6°C

Forecast

Hamilton, ON (Issued: Friday October 20, 2017 at 15:30 EDT)

Tonight
Clear. Wind southwest 20 km/h becoming light this evening. Low 9.
Saturday
Increasing cloudiness. Wind becoming southwest 20 km/h in the afternoon. High 21. UV index 4 or moderate.
Saturday night
Partly cloudy. Low 12.
Sunday
Sunny. High 21.
Sunday night
Cloudy periods. Low 15.
Monday
Cloudy with 30 percent chance of showers. High 19.
Monday night
Periods of rain. Low 10.
Tuesday
Periods of rain. Windy. High 14.
Tuesday night
Cloudy with 40 percent chance of showers. Windy. Low 7.
Wednesday
Cloudy with 40 percent chance of showers. High 10.
Wednesday night
Cloudy with 30 percent chance of showers. Low 6.
Thursday
A mix of sun and cloud. High 10.
Averages and extremes
Highest temperature(1960-2011)24.4 °C1963
Lowest temperature(1960-2011)-5.6 °C1972
Average high12.8 °C 
Average low3.6 °C 
Average8.2 °C 
Greatest rainfall(1960-2011)19.1 mm1995
Greatest snowfall(1960-2011)1.4 cm1992
Greatest precipitation(1960-2011)19.1 mm1995
Most snow on the ground(1970-2010)0.0 cm1970
Monthly frequency of precipitation40.0 % 

24 Hour Forecast - Hamilton, ON

Date/Time
(EDT)
Temp.
(°C)

Weather Conditions

LOP †
Wind
(km/h)
21 October 2017
01:00 11 Clear (0%)  Clear Nil SW 10
02:00 10 Clear (0%)  Clear Nil SW 10
03:00 10 Clear (0%)  Clear Nil SW 10
04:00 9 Clear (0%)  Clear Nil SW 10
05:00 9 Clear (0%)  Clear Nil SW 10
06:00 10 A few clouds (0%)  A few clouds Nil SW 10
07:00 11 A few clouds (0%)  A few clouds Nil SW 10
08:00 12 Mainly sunny (0%)  Mainly sunny Nil SW 10
09:00 14 Mainly sunny (0%)  Mainly sunny Nil SW 10
10:00 15 Mainly sunny (0%)  Mainly sunny Nil SW 10
11:00 17 A mix of sun and cloud (0%)  A mix of sun and cloud Nil SW 10
12:00 18 A mix of sun and cloud (0%)  A mix of sun and cloud Nil SW 10
13:00 20 Mainly cloudy (0%)  Mainly cloudy Nil SW 10
14:00 21 Mainly cloudy (0%)  Mainly cloudy Nil SW 10
15:00 21 Mainly cloudy (0%)  Mainly cloudy Nil SW 20
16:00 21 Mainly cloudy (0%)  Mainly cloudy Nil SW 20
17:00 21 Mainly cloudy (0%)  Mainly cloudy Nil SW 20
18:00 19 Partly cloudy (0%)  Partly cloudy Nil S 10
19:00 17 Partly cloudy (0%)  Partly cloudy Nil S 10
20:00 15 Partly cloudy (0%)  Partly cloudy Nil S 10
21:00 14 Partly cloudy (0%)  Partly cloudy Nil S 10
22:00 14 Partly cloudy (0%)  Partly cloudy Nil S 10
23:00 13 Partly cloudy (0%)  Partly cloudy Nil S 10
22 October 2017
00:00 13 Partly cloudy (0%)  Partly cloudy Nil S 10
 
† Likelihood of Precipitation (LOP) as described in the public forecast as a chance of measurable precipitation for a period of time.
  Nil: 0%
  Low: 40% or below
  Medium: 60% or 70%
  High: Above 70%

Environment Canada

With Version 1.08, a new $currentConditions string is formatted with the current conditions of the selected city. If the city's conditions are based on a nearby airport, then a current conditions icon and short weather description are included. You can enable automatic printout by using $showConditions = true; in the ec-forecast.php script which will cause it to print before the alerts and forecast section. If you're 'quitely' including the script on your page, you can still print $currentConditions; where you'd like the conditions display to appear.

Version 2.00 brings a major rewrite of the script to accomodate a major change in the EC Forecast pages. Included with the .ZIP distribution are the new icons now in use by EC for the forecast site. The V2.00 script is compatible with the prior icon set distributed with the Version 1.nn script.

Version 2.16 included multi-forecast capability, improved diagnostics, support for the new transparent PNG icons, and additional settings for display of date with icon and/or detail forecast legend.

Version 3.00 is a major rewrite to support the EC website changes in October, 2014. The .zip distribution now includes the current .PNG format weather icons with POP stamps.

Version 3.02 has a major change in display of the temperature forecasts with the icons. It is now done by an extract of the value from the detail text forecast instead of the old method of using the values from the icon HTML. This should provide a more consistent presentation of Min/Max values for the icons.

Version 4.02 now uses cURL functions and uses HTTPS to access the EC website.

Version 5.00 is a major rewrite of the script to use the EC XML data instead of page scraping the EC website. V5.00 includes an Almanac and a 24-hour rolling forecast that can be displayed via new settings (default is to display both). The XML parsing should insulate us from further tweaks with the EC website page design as the XML format is unchanged for many years.

Observed at: Hamilton Munro Int'l Airport
Date: Saturday October 21, 2017 at 00:00 EDT
Mainly Clear
Mainly Clear
Temp.: 9.2 °C
Wind: SW 8 km/h
Humidity: 64 %
Dew point: 2.8 °C
Pressure: 102.3 kPa
Tendency: rising
Visibility: 24.1 km
Sunrise: 07:41
Sunset: 18:28
Normals:
Max 12°C Min 3°C
Yesterday
  Max: 20.4 °C
  Min: 5.8 °C
  Rainfall: 0.0 mm

You can also access the 'maxmin' for the location (where available on the EC site) by using

 <?php
print "For this date:<br/>\n";
print $conditions['maxmin'] . "<br/>\n";
?>

which would show:

For this date:
Normals: Max 12°C Min 3°C

Environment Canada Forecast PHP script: demo, in-page demo, and download package ,
download ec-forecast.php source only
download required ec-forecast-lookup.txt source only [ see version history ].

Version history

  • Version 5.00 - 27-Sep-2017 - major rewrite of the script to use EC XML data instead of page scraping the EC website. Added Almanac and 24-hour rolling forecast displays.
  • Version 4.03 - 31-Aug-2017 - fixes for icons due to EC website changes
  • Version 4.02 - 22-Feb-2017 - force HTTPS to EC website, improved error handling
  • Version 4.01 - 27-Oct-2016 - fix for conditions icon extract, yesterday data, use curl fetch for URL
  • Version 4.00 - 22-Oct-2016 - rewrite for major EC website design changes
  • Version 3.05 - 16-Dec-2015 - fixes for temperature forecast wording changes+extraction
  • Version 3.04 - 14-Dec-2015 - fixes for change in EC website (chunked+gzipped response)
  • Version 3.03 - 01-Dec-2015 - fixes for current conditions due to EC website changes.
  • Version 3.02 - 29-Apr-2015 - fixes for major change in EC website. Temperatures now extracted from detailed text forecasts.
  • Version 3.01 - 23-Dec-2014 - fixes for 'Normals'/'Sun times' extracts, text forecast, and .png PoP icons
  • Version 3.00 - 17-Oct-2014 - major rewrite of the script to support major EC website structure changes.
  • Version 2.17 - 15-May-2013 - fixes for changes in EC website structure (again)
  • Version 2.16 - 13-May-2013 - added settings to display days of week w/o day month for icons and detail area;
    icon type selection for .gif/.png; added debugging code for EC website fetch; added multi-forecast capability
  • Version 2.15 - 17-Apr-2013 - fixes for $title display with new EC website structure
  • Version 2.14 - 16-Apr-2013 - fixes for changes in EC website structure and UTF-8 conversion
  • Version 2.13 - 30-May-2011 - fixed handling of $SITE['fcsticonsdirEC'] when used with template
  • Version 2.12 - 19-Feb-2011 - added color formatting to watch/warning/ended alerts from EC in $alertstring output
  • Version 2.11 - 26-May-2010 - fixed to handle changes to EC website for humidex/wind-chill
  • Version 2.10 - 10-Nov-2009 - fixed to handle changes to EC website for normals conditions display
  • Version 2.09 - 09-Nov-2009 - fixed missing-space in warning titles problem

 

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