16th - 19th
Strong storms initially, then clearing skies.
20th - 23rd
Scattered thunderstorms for the Northern Rockies and Northern Plains.
24th - 27th
28th - 30th
Violent thunderstorms spread in from the Northern Rockies and move east.
1st - 3rd
Fair across the Northern Plains and points westward.
4th - 7th
8th - 11th
Continued unsettled most areas.
12th - 15th
Dangerous storms for the Northern Rockies and Northern Plains, then slowly clearing.