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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 Monday, 20-Nov-2017 12:34 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-V5-02.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: Thursday April 19, 2018 at 21:00 EDT
Mainly Clear
Mainly Clear
Temp.: 0.6 °C
Wind: W 14 km/h
Humidity: 61 %
Dew point: -6.0 °C
Pressure: 102.3 kPa
Tendency: rising
Visibility: 24.1 km
Sunrise: 06:32
Sunset: 20:06
Normals:
Max 13°C Min 3°C
Yesterday
  Max: 2.7 °C
  Min: -0.5 °C
  Rainfall: 0.0 mm

 Extended Forecast - Environment Canada
  Friday
Mainly sunny
Mainly sunny
Max: 8°C
Saturday
Sunny
Sunny
Max: 11°C
Sunday
Sunny
Sunny
Max: 14°C
Monday
Sunny
Sunny
Max: 18°C
Tuesday
A mix of sun and cloud
A mix of sun and cloud
Max: 11°C
Wednesday
Chance of showers (60%)
Chance of showers
Max: 10°C
Thursday night
Chance of flurries (30%)
Chance of flurries
Min: -4°C
Friday night
Clear
Clear
Min: -3°C
Saturday night
Clear
Clear
Min: 0°C
Sunday night
Clear
Clear
Min: 1°C
Monday night
Clear
Clear
Min: 7°C
Tuesday night
Cloudy
Cloudy
Min: 8°C

Forecast

Hamilton, ON (Issued: Thursday April 19, 2018 at 15:30 EDT)

Tonight
Mainly cloudy. 30 percent chance of flurries early this evening. Clearing overnight. Wind northwest 30 km/h gusting to 50 becoming light this evening. Low minus 4.
Friday
Mainly sunny. Wind becoming northwest 20 km/h in the morning. High 8. UV index 6 or high.
Friday night
Clear. Wind northwest 20 km/h becoming light in the evening. Low minus 3.
Saturday
Sunny. High 11.
Saturday night
Clear. Low zero.
Sunday
Sunny. High 14.
Sunday night
Clear. Low plus 1.
Monday
Sunny. High 18.
Monday night
Clear. Low 7.
Tuesday
A mix of sun and cloud. High 11.
Tuesday night
Cloudy. Low 8.
Wednesday
Cloudy with 60 percent chance of showers. High 10.
Averages and extremes
Highest temperature(1960-2011)26.7 °C2005
Lowest temperature(1960-2011)-5.0 °C2001
Average high12.1 °C 
Average low1.9 °C 
Average7.0 °C 
Greatest rainfall(1960-2011)16.8 mm1998
Greatest snowfall(1960-2011)0.4 cm1988
Greatest precipitation(1960-2011)16.8 mm1998
Most snow on the ground(1970-2010)0.0 cm1970
Monthly frequency of precipitation44.0 % 

24 Hour Forecast - Hamilton, ON

Date/Time
(EDT)
Temp.
(°C)

Weather Conditions

LOP †
Wind
(km/h)
Wind
Chill
19 April 2018
22:00 0 Mainly cloudy (0%)  Mainly cloudy Nil NW 15
23:00 -1 Mainly cloudy (0%)  Mainly cloudy Nil NW 15 -6
20 April 2018
00:00 -1 Mainly cloudy (0%)  Mainly cloudy Nil NW 15 -6
01:00 -2 Partly cloudy (0%)  Partly cloudy Nil NW 15 -7
02:00 -2 A few clouds (0%)  A few clouds Nil NW 15 -7
03:00 -3 A few clouds (0%)  A few clouds Nil NW 15 -8
04:00 -3 A few clouds (0%)  A few clouds Nil NW 15 -8
05:00 -4 A few clouds (0%)  A few clouds Nil NW 15 -9
06:00 -3 Mainly sunny (0%)  Mainly sunny Nil NW 15 -8
07:00 -3 Mainly sunny (0%)  Mainly sunny Nil NW 15 -8
08:00 -2 Mainly sunny (0%)  Mainly sunny Nil NW 20 -8
09:00 0 Mainly sunny (0%)  Mainly sunny Nil NW 20
10:00 2 Mainly sunny (0%)  Mainly sunny Nil NW 20
11:00 4 Mainly sunny (0%)  Mainly sunny Nil NW 20
12:00 5 Sunny (0%)  Sunny Nil NW 20
13:00 6 Sunny (0%)  Sunny Nil NW 20
14:00 7 Sunny (0%)  Sunny Nil NW 20
15:00 7 Sunny (0%)  Sunny Nil NW 20
16:00 8 Sunny (0%)  Sunny Nil NW 20
17:00 8 Sunny (0%)  Sunny Nil NW 20
18:00 6 Sunny (0%)  Sunny Nil NW 20
19:00 3 Sunny (0%)  Sunny Nil NW 20
20:00 1 Clear (0%)  Clear Nil NW 10
21:00 1 Clear (0%)  Clear Nil NW 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%
‡ Value not significant

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: Thursday April 19, 2018 at 21:00 EDT
Mainly Clear
Mainly Clear
Temp.: 0.6 °C
Wind: W 14 km/h
Humidity: 61 %
Dew point: -6.0 °C
Pressure: 102.3 kPa
Tendency: rising
Visibility: 24.1 km
Sunrise: 06:32
Sunset: 20:06
Normals:
Max 13°C Min 3°C
Yesterday
  Max: 2.7 °C
  Min: -0.5 °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 13°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 5.02 - 20-Nov-2017 - added wind-gust display to conditions box and hourly display, fix no conds icon issue
  • Version 5.01 - 07-Nov-2017 - added windchill display to conditions box
  • 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

 

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