Explain this sudden change in weather

Perth, Australia has had some fairly erratic changes in weather lately. Three days ago it was 40.3 degrees C (104.54 F), which was the hottest November day here for about 60 years.

Yesterday it dropped to 21 degrees (69.8 F), about a half of what is was two days ago.

Apart from some light clouds (which did not produce any change in the humidity), I can’t seem to think of a reason for the dramatic change.

I’ve no answer for you, but Dublin has recently experienced the hottest October since records began, the driest October, and in the same month a thunderstorm that the meteorological department described as “freakish”. It just sat on the city producing rain, sleet, hail, and forked lightning for 40 hours. Very odd.

BBC

Nitpick: half of what it was a few days ago would be -116.42 °C.

Got to think in terms of absolute temperature. That was picky…I’m sorry.

Hey, great link, Bromley

I didn’t know that the BBC had the weather for Australia. And it even explains why!

We had the hottest October of my lifetime this year in San Jose, until the temperature just crashed down to where it should have been.

In Santa Cruz (near San Jose, incidently) one day in late October was 90 degrees F. It rarely gets about 75 or 80 here even in the peak of summer due to the moderating effects of the ocean. The next day, the high was 60. I believe the low was in the low thirties. Quite a spread for a 58 hour period.

48 hours. Egads, I though posting while drunk led to confused outbursts and bannable offences, not lame mistakes about the fundamentals of time keeping. Sheesh.