THE BOTTOM LINE:
Morning Min temps over eastern ND DID drop to 28 degrees at Grand Forks ND and 30 degrees over Huron in eastern ND and over Pierre SD and south to Valentine NEB. But that is about it. The rest of the region saw temps in L to M 30s. This Link will show Min temps
...look at the Bottom Left SMALL Map.
The FROST threat northeast MN and northern half of WI is still a good bet Wednesday Morning... but that is about it. Weather Models still show a Major Low developing Wednesday Night and Thursday over the Upper Plains and WCB with good rains and cool temps... that moves into the ECB and Great Lakes Friday and Saturday. The models offer major changes in the 6-10 day and are colder in the 11-15 day.
In the SHORT TERM the Tuesday Morning weather map shows the Big Low over the northeastern Great Lakes and its trailing cold front is now well off the East coast and into central FL. Large High pressure is located over the central Plains. There are light rains over central and eastern TX. Temps will begin to warm today over the Plains as winds become West then southwest ahead of the next system.
The Big Low Now over the NW Great Lakes will move into eastern Canada which will cause the next system Wednesday night and Thursday to slow down and stall bringing good rains into the Upper Plains by Wednesday Night. 80s are possible over the eastern portions of the central Plains and all of the Lower Plains by Thursday afternoon.
In the MEDIUM RANGE.... The overnight weather models have not change with respect to how they handle this next system. This stalled slow moving Low will bring good rains to the Upper Plains and WCB October 1 -2... but miss most of the central Plains. This Low will bring heavy rains with good coverage : 75% of 0.50 to 2.00 over Central and eastern ND all of SD all of IA s southern MN and southwest WI.
In the 6-10 DAY... The weather models keep this Low moving slowly east OCT 3-4-5 bringing light to Moderate rains to the ECB and the New England. Then the pattern repeats itself with a New large trough and surface Low crashing into the West coast OCT 3 and 4
Because of the slow moving Low this week over the Midwest and the Low over Quebec Canada this New system also becomes a slow moving event over the western US. This Low will bring good rains to the Great Basin and central Rockies OCT 4-5 but the models have this Low moving into COL 10/4 then IA on 10/5-- further East then Yesterday. This would bring more rains into the Midwest.
The the Model turn colder as they show a large cold High coming out of western Canada into the Plains 10/6 and eventually into the Midwest by 10/7. This is followed by another large cold High coming out of western Canada into the Plains and Midwest 10/9 and 10/10.
In the 11-15 DAY: The Tuesday morning 0z GFS and ECMWF are looking Much colder with a pretty good Ridge along the West coast and a fairly deep trough over the the eastern US and eastern Canada. If these Model are right this sort of pattern WOULD bring a widespread frost to the rest of the central and Upper Plains and Much of the Midwest with several chances occurring in this time frame.