Chicago-Alaska in April?

We are on your route approximately 2,200 km southeast of Sue & 3,300km from Anchorage. Comments in first two posts are valid for here. The last two springs have been cool & late with snow hanging around until end of April. Roads will be clear except for new snow which can come anytime so be prepared to sit out a couple of days. Most campgrounds not open. The few that are probably cater to workers.
Very unpredictably. Example yesterday high was 23C & sunny. Today 2C with probability of snow. In fact it is snowing Edmonton & North today.
April even less predictable.