Here's 50 iCal calendars which include active caches (maximum 30 days) for each state.

iPhone / iTouch : With your device, go to the link http://www.geo-ical.com. Click on links for states you want subscribe.

Google Calendar :

1. Authenticate to your Google Calendar.
2. At the bottom of the calendar list on the left (Other Calendars Section), click the Add down-arrow button and select Add by URL.
3. Enter the address field as indicated in Column Google Calendar URL for the desired state.
4. Click Add. After a few seconds, the calendar will appear in Other Calendars section on the left.

Now, you are able to sync this new Google Calendar with your Android device.