Drought. What happened during the Great Depression was the Dust Bowl.
That would be a 'drought'. (drowt)
A long period of cold weather is typically referred to as a "cold snap" or a "cold spell."
Usually 'a dry spell' if it occurs in an area where rain is common. If it is prolonged, meaning a long period of time, then it becomes 'a drought'.
After a long dry spell, it is likely that there will be an increased risk of wildfires due to the dry conditions. The vegetation will be more susceptible to ignition, and the lack of moisture can make it easier for fires to spread rapidly. Additionally, there may be water shortages, impacting agriculture, wildlife, and human activities.
A time of dry weather with little rainfall is called a drought.
A collective noun for dry weather is spell. eg. A spell of dry weather
There is no standard collective noun for 'dry weather', however, the term sometimes used is a spell of dry weather.
Spell.
A drought.
drought
droughts happen when there is a spell of very dry weather when there is very little rain
That is a drought.
drought
Dry weather means no rain. A dry day means no rain today. A dry spell means no rain for a while. A dry region means a place that seldom has rain.
A drout or drouth
Drought .
Drought