OK. A truthful answer. BECAUSE IT WASN'T AN EXTREME ENVIRONMENT. San Diego in Feb. isn't CANADA.
You must be thinking of weather in Connecticut in February, that might be LIKE CANADA.
Did you miss this
Desert climates with low humidity not only decrease or obliterate fly and maggots activity, but can also halt other forms of decomposition. Very dry climates may cause a body to naturally mummify, converting its skin and tendons to a leathery and parchment-like wrapping surrounding the bones, while the organs decay by autolysis and putrefaction. Paradoxically, heavy rainfall also slows fly activity, including egg laying. Maggot activity, however, continues-but with fewer maggots.