Darwin may be having its driest March in 22 years with the city still 200mm short of the monthly average, and there's only a week to go until April, the traditional drying out time. There has been no rain since last Tuesday night, when a wild storm swept through. Darwin airport has only received 110mm this month, compared to the monthly average of 319mm. The last five days have brought some 'dry season' type weather. The humidity has been as low as about 20% some afternoons compared to the normal 65%. There have also been some very warm days, two-to-three above average. On Sunday the Tiwi Island footy grand final was played in 35-degree heat, the hottest March day in 29 years of records. If there is less than 10mm of rain this week it will be the driest March in 22 years. So far there have only been three drier since records began 68 years ago. The dry spell should end in the next few days. There is an increased chance of gusty showers and storms, but these will be too brief to bring a lot of rain, possibly less than 10mm in total. April is a good chance to be quite dry too as a weak monsoon trough persists well off the north coast. This may be the start of the 'dry'.