When the day is overcast, what temperature range might the water inside a clear glass pitcher fail to climb above?
$100^\circ\text{F}$ or $110^\circ\text{F}$
On days lacking direct solar input, the lack of radiant energy means the water temperature relies solely on the ambient air temperature, which is rarely high enough to initiate proper steeping kinetics. While a sunny day might push the water into the lower safe zone ($130^\circ\text{F}$ to $140^\circ\text{F}$), overcast conditions severely limit this rise. If the sky remains heavily grey, the internal temperature of the water in the clear glass pitcher might struggle to surpass the 100 degrees Fahrenheit mark or perhaps reach only 110 degrees Fahrenheit at its peak. This low temperature signifies a failure to extract significant flavor and simultaneously means the water spends a prolonged period within the danger zone where bacteria can multiply without being effectively controlled by heat.
