Our weather has been between 85 and 100 for a while now. It's been pretty cool for this area, this time of year, actually (not many days on the upper range of that range). However, I think that (and the wet, and unusually cool late spring) has helped the plants to grow a lot faster. We're using black plastic for most of our plants. My elevation is 2,260'. We're not watering a lot (but more than last year, so far).
I'm impressed with the following, this year (this could change a lot throughout the season):
* Marion (excellent and clean germination; nice growth; large fruit that set early; production potential; I had to cut off a lot of the plant to cage it since I caged it late, though)
* Matina (I kept an extra bushy plant, for Matina, and it has a lot of fruit on it; vigorous plant)
* Sausage (most of the 17 plants; some got BER; one of my top two producers last year; it's setting fruit earlier, this year)
* Sweet Orange Cherry (early; prolific; decent fruit to leaf ratio; handles tough soil)
* Rio Grande (good-sized, nice fruits on a manageable plant)
* Husky Red F1 (this is probably actually the mother of Husky Red F1, seeing as it wasn't rugose; I'm hoping it's stable; it has qualities of a dwarf, such as how the leaves are stiffer than regular plants', but it doesn't seem to be a dwarf; it's prolific, and has good-sized fruit, which are shaded well by the plant; I don't have it caged, and it's still growing upright long after others, including Tidy Rose F1, have sprawled)
* Galapagos Island / Solanum cheesmaniae (this is generally always my earliest tomato, and it's doing well and fruiting productively, but I used a less than ideal soil when starting it, and it was pretty much freshly sprouted at transplant time; so, it's not its fault it wasn't first, this year)
* Mountain Princess (lots of nice fruit; good fruit to leaf ratio)
* Nodak Early (mine is probably a cross; similar to Mountain Princess this year)
* Frosty F. House (mine is probably a cross)
* Black Dragon (vigorous and productive)
* My Brandy Boy crosses (several set fruit early; the fruits seem to get a good size; they seem like they may be prolific)
* Bloody Butcher (a good supply of decent-sized fruit; does well in the cage)
* My Gnocchia di Limone cross (pretty tasty, and one of the first two to ripen; unique light red color)
* Early Girl F1 (grows and fruits fast)
* Fourth of July F1
* Moravsky Div (kind of like Matina but earlier, this year, with a smaller plant; Matina has quite a bit more fruit, though)
* Buckbee's New 50-day (probably not the ideal early for my area, but this year, with the cooler weather and being shaded by other plants, it's doing quite nicely; it has an open habit, and I can see all the fruit; the plant is small; I haven't grown it before this year)
* Jerusalem
I have mixed views on the following, currently:
* Black Vernissage (it sprouted very fast, though, and that impressed me, but it was stunted after the transplant; I think something happened to it as the leaves weren't a healthy-looking color)
* Matt's Wild Cherry (even a quite red fruit still tasted like it had excess tomatine or some such in it; other than that, the flavor is just like Husky Cherry Red F1, if I remember; the plant vines very long vines; it's early)
* Coyote (the growth and earliness really impressed me, but it has a lot of leaves, making it hard to find the fruit)
* Porter (the fruits are practically cherry-sized this year; it's probably the soil rather than the plant; they might get bigger, too, and at least it has a good supply of fruits setting)
* Red Robin F1 (I loved it at first, and it does have awesome qualities, but I might prefer it in the house)
In retrospect I would have liked to have planted more Marion and Husky Red F1 tomatoes. I'm glad I planted so many Mountain Princess tomatoes (and I'm also glad I gave them wood ash).