https://darksky.net is all you need.
Pull it up on your phone or computer.
Better yet add the Big Sky skill to Amazon Alexa and then ask your Echo device for the forecast. It is scary accurate.
"Alexa, open Big Sky.”
“Alexa, ask Big Sky if it will rain in three hours.”
“Alexa, ask Big Sky how much it will rain tomorrow?”
"Alexa, ask Big Sky..."
...what's the high temperature today?
...will it rain in the next three hours?
...for the barometric pressure
...what was the weather on June 1st, 1980?
...will it rain before 10 pm?
...for the humidity at 4 pm?
...give me a weather fact!
...what will the wind speed be in three hours?
...what's the low temperature in the next seven days?
...about the weather this weekend.
...when is sunrise on Saturday?
...what's the weather on Friday?