The NOAA weather.gov
Hourly Weather Graph is my first weather check. They update this every few hours.
Note-- the big title is the local weather office, not your location. The temperatures are usually very accurate. The wind speeds will vary a lot, and often the wind is less than the forecast speed and gust speed. Precipitation amounts can be wrong pretty often, too. But I do like the amount of precipitation estimates to get an idea of light mist or heavy rain, and what time of day the rain is due.
The most current radar I've found is
Weather Underground's radar loop. I like intellicast's radar to see rain coming from a long distance away, but it's usually delayed.
Intellicast has a quick to view
10 day forecast page.
Sunrise/Sunset:
wunderground's forecast page has:
Actual sunset
Civil twilight -- near the limit for bike riding.
Nautical twilight
Astronomical twilight
(they have a
link on the page to explain these terms)