Another dark and damp commute awaits many Sydneysiders with the likelihood of showers and possibly severe thunderstorms forming through the afternoon and evening.
The Bureau of Meteorology has already issued a severe thunderstorm warning for inland areas including Canberra for heavy rainfall and damaging winds.
For the Sydney region, though, thunderstorms are likely to develop in the city's west from 2pm to 3pm onwards, with the showers and storms reaching the eastern suburbs by 4-5pm, said Rebecca Kamitakahara, a bureau forecaster.
"There's quite a good chance that we could see severe thunderstorms in the [Sydney] basin," she said.
Tuesday's storms dumped about 25 millimetres of rain on Observatory Hill, with some regions such as Richmond collecting more than 40 millimetres.
"Definitely there's a bit more potential for hail today than yesterday," Ms Kamitakahara said.
Adding to the likelihood of storm activity is the expected arrival late on Wednesday afternoon of a southerly change that will provide additional lift for the moist air mass over the region.
Wednesday's thunderstorms, should they develop as expected, could last well into the evening and potentially extend into the early hours of Thursday, Ms Kamitakahara said.
The good news, though, is that from Thursday onwards conditions should start to dry off, with only a few showers forecast by the bureau for the coming week.
The bureau has collected at least 0.2 millimetres of rain at Observatory Hill on all but four days so far this month.
The record number of days with some rain in Sydney in March is 26 days, recorded back in 1870.
The arrival of the cool change will lower temperatures a couple of degrees for coming days after Sydney reached 30 degrees for the first time this month.
Despite the lack of particularly hot days of late - unlike Sydney's record hot summer - March is well on course to be yet another warmer-than-average month for the city.
