Все, что я действительно хочу сделать, это заменить путь Google на мой.
// код из модуля
$today = &$handler->current_conditions;
$condition = (string) $today->condition->attributes()->data;
$unit = google_weather_get_unit($convert_to);
$icon_src = (string) $today->icon->attributes()->data;
$content['current'] = array(
'temp' => $convert_to == 'SI' ? (string) $today->temp_c->attributes()->data . $unit : (string) $today->temp_f->attributes()->data . $unit,
'humidity' => (string) $today->humidity->attributes()->data,
'icon' => theme('image', 'http://www.google.com' . $icon_src, $condition, $condition, NULL, FALSE),
'condition' => $condition,
'wind_condition' => (string) $today->wind_condition->attributes()->data,
'custompath'=> $icon_src,
);
// код из tpl.php
<div class="weather-icon float-left">
// <?php print $content['current']['icon']; ?>
<?php print $base_url; ?>
<?php print $content['current']['custompath']; ?>
</div>