Blooming - Heatwave Tomatoes

Have two Heatwave tomato plants caged in the back yard - one of them had a small tomato on it when we planted it (you can see a hint of red through the leaves). The other has had a bit more vigorous growth and is now flowering (see small yellow flowers in foreground). Flowers have been around for about a week. Will see how long it takes for new tomatoes to appear.

Have had a few days of cool and wet weather, so not sure if that is going to affect the plants at all.