Parts of drought-stricken NSW experienced both their coldest and warmest July in more than 20 years, when considering maximum and minimum temperatures separately.
Warm days and cold nights are a typical sign of drought.
Most of NSW received less than 20 percent of the state’s average July rainfall.
The 0.8 millimetres of rain recorded at Forbes last month was its lowest July total in more than 140 years of records.
Broken Hill’s 0.4mm in July followed its driest first half of a year on record, with data available back to the late 1800s.
The combination of absent rainfall and enhanced evaporation starves the soil of moisture, lowering the air’s due point — at night this allows more air to cool down before condensation kicks in.
In contrast to cool nights, clear daytime skies typically cause maximum temperatures to climb above average due to abundant solar heating.
The cold night-warm day signal of drought led to Parkes, NSW, registering its lowest mean minimum and highest mean maximum temperature for July in over 20 years of records.
[Featured Photo: Yuri Kravchenko/Alamy]