I feel for you. High heat like that is even worse when it continues day after day.
A couple of years ago we had a dangerously hot New Year's Day when temperatures passed 47 C, which I just calculated as 118 F. It actually peaked just above that at sometime after 5 pm. We'd been inside the house all day, hiding from the heat, waiting for it to begin to cool after the peak before going to the beach to cool off. We finally gave up at 4.30 pm, got home at 6 pm to find the electronic thermometer had gone even higher in our absence but was finally on the way back down.
Temperatures that high kill plants.
Are you anywhere near the fires? A really big bushfire can raise the temperature in your area to heights like this. Back in 1994 and our last really bad fires, the heat was that bad again (we didn't have a thermometer, but I remember it). The winds were blowing right off the fire, and were scorchingly hot. The hot wind actually killed all the grass in our backyard, it was so bad. I had my cleaning lady helping that day, she put wet towels out on the line and they were crisp dry when we checked them, 45 minutes later.
The fire hit the town that afternoon, and we had to get out. We were OK, though. No water for a week, so we had to wash by going for a swim, and drink bottled water.
Suggestion for coping in the heat - close all windows and doors. Put wet towels to block any draughts. Hang wet towels over open windows while there is any sort of breeze as long as the sun isn't on that side of the house. Keep windows shaded by keeping curtains closed. Basically, treat your house like an Arab woman in full burkah. There is one very good reason for burkahs - keeping cool in atrocious heat.
Collect water in bottles, keep as much in the fridge as you can. Make ice. Freeze plastic drink bottles of water (not too full). Do not waste your water but keep it for drinking. To get the most out of a drink bottle of ice, top it up with drinking water and the ice will melt a bit and chill the drinking water as it does so. Over the day, you can use this to produce twice or three times the quantity of drinking water at a pleasantly cool temperature. (On our scorching hot days, our drinking water comes out of the tap at over 60 C sometimes - that's 140 F).
Other ways to keep cool - wet your clothing. And if you can prepare ahead - get some water crystals. You know the granular stuff, looks like sugar, that they sell to mix with your garden soil, that turns into gel when it gets soaked with water? If you make a long tubular scarf, the tube about an inch in diameter and a foot long, with another six inches of plain length on each end, you then put 2 g of these crystals (about half a teaspoon) into the tube and stitch it closed. Then when you want to get cool, soak the tube in water until it puffs up and then wear it around your neck. It should stay moist and cool for days.
You only need water crystals in the part that actually goes round your neck. The extra length of plain material is so you can tie it on.
I also have an eye mask that has been made in a similar way - it's fabulous for migraines. It stays cool for days, instead of getting warm in minutes.
Keep hydrated, keep out of the sun and heat, keep the house shaded and closed off from hot winds, and you should slide through.
Hang in there.
I'm currently sitting at my desk in my down jacket, wearing thermals and thick woollen socks and still feeling cold. It's snowing on the Blue Mountains inland of Sydney and I'm COLD!
Marg