So how do precipitation and temperature effect plants? Well, in every way possible. Excessive precipitation, especially in poorly drained soils, can restrict oxygen intake by roots. Oxygen is vital for all other processes to occur that impact growth and vigor.
In years where we have experienced excessively wet springs we typically see stunting and yellowing in herbaceous plants.
While the rain is great for woody plants and all their new spring growth, it can put them at a disadvantage later in the season.