Adelaide in longest cold stretch since 2004 ADELAIDE has received its first substantial rainfall in more than two weeks and showers are expected to continue throughout the day. Rainfall of about 5mm is expected today with current temperatures of 15C to hit 22C this afternoon. Isolated showers are forecasted to continue into the weekend before easing on Saturday. The chilly weather is a little out of the ordinary for Adelaide, which is in the midst of a cold stretch not seen since 2004, the Bureau of Meteorology says. "In terms of the run of days below 30 degrees, I think we'll end up with about 11 all up," Climate Services manager Darren Ray said. That's moderately unusual for this time of year. The last time we had a run as long as that was 2004, so it's probably our longest run of days below 30 at this time of the year since 2004, but it does happen. Mr Ray said he expected a return to more typical summer conditions after the first couple of weeks of February. "I don't think it's the end of summer at all," he said. There are some indications, though not particularly strong, of a burst of heat mid-February. Senior forecaster Brett Gage said the average maximum temperature for January was 29.3C. So far this month we're tracking above average with 30.9C. "That goes to show that we've actually been warmer than average," he said. There were a number of days early on that were pretty hot. We've had four days over 40 in January, when we only average three days over 40 for the entire summer. He said maximum temperatures were well above the coldest January day on record for Adelaide. The lowest ever maximum temperature in January was 17.1C in 1970, recorded at West Terrace. We've had a large high centred southwest of Perth, with cold fronts to the south of us, The cooler air from the Southern Ocean is being brought northwards in a southerly airstream across South Australia.