The park receives an average rainfall of 284.6 mm (11.2 in) per year. The average high temperature in summer (December�January) is 37.8 �C (100.0 �F), and the average low temperature in winter (June�July) is 4.7 �C (40.5 �F). Temperature extremes in the park have been recorded at 46 �C (115 �F) during the summer and ?5 �C (23 �F) during winter nights. UV levels are extreme most days, averaging between 11 and 15 on the UV index.
Local Aboriginal people recognise five seasons:
1. Wanitjunkupai (April/May) � Cooler weather
2. Wari (June/July) � Cold season bringing morning frosts
3. Piriyakutu (August/September/October) � Animals breed and food plants flower
4. Mai Wiyaringkupai (November/December) � The hot season when food becomes scarce
5. Itjanu (January/February/March) � Sporadic storms can roll in suddenly
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