Climate

Tamworth Agricultural Institute (TAI) is located on the North West Slopes and Plains, with latitude 31°9'S, longitude 150°59'E, and an altitude of 430 m. Rainfall is summer dominant, with January having the highest monthly average and a secondary peak in June. Frosts generally occur from April to October each year. The nearest Bureau of Meteorology weather station (055054) is at Tamworth Airport (Oxley Lane) and is 15 km from TAI.

Weather station

Bruce Haigh with the Australian Weather Station installed in 2007.

The Institute was established in 1959 and rainfall records were commenced soon after. A site for the meteorology lawn was built in the 1960s. An automated weather station (Environdata® Mark 3) was installed in 1987 at the same site, to facilitate measurements during holidays and weekends. Manual readings are still recorded daily at 0900 hours on weekdays. Measurements made include: maximum, minimum and terrestrial minimum temperatures; rainfall; class A pan evaporation; wet and dry bulb temperature; and observations such as cloud cover, wind direction and speed, visibility, frosts, fogs, storms etc.

An Australian Weather Station (AWS) was installed on the same site in 2007. This new AWS conforms to the standards of the Bureau of Meteorology but has not yet been incorporated into their network.

A climate summary for TAI is presented below. Rainfall data is based on 51 years of records. Evaporation and temperature data is based on 20 years of records.

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Average/Total
Max. temp. °C 32.1 30.7 28.9 24.8 20.5 16.7 15.6 17.7 21.0 24.8 27.6 30.2 24.2
Min. temp. °C 17.8 17.8 15.1 11.2 8.0 5.3 4.1 3.7 7.6 10.7 13.8 16.2 11
Rainfall (mm) 90 64 46 35 44 41 46 42 48 63 75 86 680
Evaporation (mm) 242 192 177 122 76 51 53 77 107 153 184 226 1664