Geektool Weather Not Updating

I have geektool 3 running and so far it is great, but there is one thing that I don't understand. I have the current temperature, weather conditions and a weather picture that is pulled from the yahoo website. Now...everything works fine, except the weather picture. For some reason, it only updates when I quit and restart geektool, although the refresh time is at 10 seconds, normally I have it at 600 seconds. For some reason the picture still shows up as sunny, eventhough it is midnight. What seems to be the problem?