To water or not to water?

[notsogreenthumb]

Last year I watered my plants daily on the warmer days without thinking much of it, I had some blight issues near the end with my tomatoes. This year I'm looking at the forecast and trying to keep an eye on when it rains a lot and taking a step back leading up to that.

We've got a week full of rain forecast from Thursday onwards, but a very hot day tomorrow (Wednesday), shall I water or just wait till the raining on Thursday? I don't want the plants to be overwatered again..

Overwatering doesn't cause blight, so that isn't the reason they got it last year. It tends to start during humid weather in August and often spreads from either nearby potato fields or from your own garden, especially if you have planted in the same place as previously. Some years are worse than others.

Plants can be more susceptible to any disease if they have been stressed. Witholding water isn't going to do them much good.

Erratic watering is more likely to contribute to disease than over watering.

With a spell of rain forecast I'd give them a water and feed so you don't have to feed them during the rain!

Thank you for your responses.

Sorry @MustardRose I should have mentioned I was overwatering them while it was very humid out so just making the plant more susceptible to disease, it was the first year anything was planted so it wouldn't have been from previous planting. I'm too worried about the temperature becoming humid again and me adding to it 

Fair point @ViperAtTheGatesOfDawn I wondered about feeding them tomorrow or doing it after the rain.

I wondered about feeding them tomorrow or doing it after the rain. Feed isn't good for a plant that is currently water stressed. If you've been watering regularly, no harm in feeing if the plant needs it, if it's been struggling a bit, wait till it's had a good soaking.

Don't feed unless you feel they need it. Excess nitrogen etc washes off and eventually finds its way to watercourses causing too high levels of nutrient, algal growth and a general decline of diversity. Wash off can also affect wild flowers as the grasses can make better use of the nutrient and out compete the flowers.