How Do You Check to See If It Is Safe to Fly Your Drone?

Tool - UAV Forecast
UAV Forecast is one of the best weather apps for beginners and experienced drone pilots. It is available as a webpage, Android app or iOS app. It is a great solution to see weather wise if it is safe to fly your drone.
- You can try it without downloading it by going to UAV Forecast at: uavforecast.com
or download the app and install it on your device: iOS OR Android. - Enter the location of your flight and click Search, or click "Use my location" if you are intending to fly where you are standing.
- You will quickly find information for your location, such as below:
At 33 Feet (10 Meters)

At 400 Feet (121.92 Meters)

It is safe to fly on this occasion at 33-400 feet (10-121.92 meters).
I wouldn't be too concerned about the Est. Sats Locked (warning) as I haven't found that to be very accurate and had no trouble locking on many satellites once I'm all set to fly my drone.
Guide of Terms
Time: Current or future time.
Gusts at xft: Wind speed at target altitude, maximum speed including gusts.
Temp: Air temperature.
Precip Prob: Probability of precipitation.
Cloud Cover: Cloud cover refers to the fraction of the sky obscured by clouds when observed from a particular location.
Visibility: Visibility is a measure of the distance at which an object or light can be clearly discerned.
Visible Sats: GPS satellites that are visible in this place and at this time.
Kp: Geomagnetic storm index, 0-9, above 3 means disturbance of GPS reception.
Est. Sats Locked: Estimated GPS satellites locked at this location, given the Kp, location and time of day.
Good To Fly?: No or Yes.