Got about 12 inches of snow last week. But, I need to start indoors soon to beat the short growing season. I cannot plant tomatoes outdoors and get a tomato before it freezes. I think the time between freezing temps here is less than 80 days.
We are trying Rebekah Allen this year from Baker’s Creek. 70 DTM. I have had good luck also, at the end of the season, cutting off the branches that still have flowers, pulling off the bottom leaves, and sticking them into a pot of dirt.
I bring that indoors, and most go ahead and form fruit. I also get additional blooms/fruit through out the winter - just in front of the patio door.
You sure have a short growing period. We are more fortunate, but want to get as much harvested before the drought months.
'Sub Arctic Plenty' is a fast-growing, determinate plant, which means it stops growing when flowers develop.
The tomatoes, which are 3 or 4 oz., are harvested at 45 days, making it one of the fastest-producing varieties.
On the down side, this variety is not resistant to any of the common diseases of tomatoes,
hence the possibility of total variety crop failure.
'Early Girl': Indeterminate, early, hybrid, slicing tomato, VF resistant.
Another good source of information for early season varieties can be found at:
http://www.chileplants.com/search.aspx?CategoryID=6&SeasonID=1&SearchButton=Go
Don't let the name fool you, however, they only sell plants, and not seed.
The list of early tomato varieties is, at least, a starting point and a good early variety resource.