This is my go-to weather data source for planning purposes.
https://weatherspark.com/
Generically, the site has good weather data where there is good past history of weather records, which usually means airports.
Your profile suggests you are down south, so I typed in New Orleans and got this.
https://weatherspark.com/y/11799/Ave...tes-Year-Round
Gives you good temperature averages, cloud cover data, chance of precip (they define that as at least 0.04 inches minimum), hours of sunlight, and most important you get wind speed and direction averages. If I expect a lot of tough headwinds, I adjust my anticipated daily distance to be more appropriate.
If you know you are going to be there in a certain month, click on a month below a graph to get more precise graphics.
On the right side you see a tiny little map and the phrase interactive map, click on that and you can get a map of other data points to click on. This way you could look at a few spots along your route to figure out what your weather might be like on your trip.
It is good for averages, and for example for temp it will give you the range you can expect to be within 90 percent of the time.
I use that to assess what clothing I want to bring. And I of course look at the wind probability. But I think you can assume that the wind will always be a few mph stronger where you are biking than where the data is collected for the averages.
But I only use that data when planning a trip. Once I get somewhere, then I want more site specific data. In USA I mostly rely on national weather service for forecasts.
Mostly rely on wunderground for radar.
https://www.wunderground.com/maps/radar/current/usa
But you probably have your favorite sources for weather forecasts, so I am not going to elaborate further. But if you are afraid of getting bored, sounds like you are more likely to ride on a rainy day than sit it out.
