Correct -- lack of rain is bad for nectar production. The plants will not expend the energy and produce excess nectar, they will hold onto it.
Ideal condition is when we get some soaking rains late in the evening, overnight and soak the ground so that when the sun comes up the next day, the plants want to move the moisture in the ground throughout it's root and body. So cool at night with a heavy thunderstorm and then 75- 90 and sunny the next few day.
Of, course, too much rain will wash the nectar away.... it's a crazy balance that nature only has the answer too.
ost of the country has been baking the last few weeks, except us here in New England, but we are starting to get temps too high with little rain too. Forecast is looking better for latter this week.