I feel like I’ve started nearly every weather report with a joke about how changeable the weather conditions have been. But that’s just the kind of year it is. To fill us in on another topsy-turvy week, JR has provided a bevy of facts.
Four seasons in one week
We start off the week like it’s still winter. A strong cold front is bringing wind and rain throughout the day today. However, by Friday the temperature will rise to 32°C. This is classified as a ‘hot’ day. In Perth, a hot day is 32 or more. The last time we had a hot day this year was March 8, when it got to 34.5°C. We’ve a chance of eclipsing that on Saturday, with 34°C forecast, however strong easterlies and a chance of a thunderstorm will make the day a bit more interesting. Really, the only thing that’s off limits this week is snow.
The hottest day since April
Last Friday was the hottest day since April 3, when the mercury peaked at 31.8°C. We were just a hair shy of that, at dead-on 31°C. However, we were many hairs shy of the October maximum, which was a balmy 37.3°C recorded in 1967. We’ll start experiencing very hot weather soon too, which is any day over 35°C. In 2014 we recorded out earliest very hot day, when the thermometer peaked at 35.4°C on October 15.
Overnight, Perth recorded 6.6mm, and a further 0.6mm since 9am. This brings out total rainfall for the month to 16.9mm, far short of the monthly average of 51.5mm. Historically, there is precedent for the entire total to be recorded in one day. The highest one day total for October was 68.2mm recorded in 1995. Other large falls include 55.4mm in 1978, and 50.0mm in 1967 (only 25 days before we recorded that record maximum temperature, for those playing at home.)
We’re up 0.1% on last week, with the dams currently sitting at 45.2%. On this date last year they were at 33.6%, which means we currently have 35% more water than this time last year.