Weather records have been collected at the Wagga Wagga Agricultural Institute (elevation 214m above sea level) for over 100 years, and the Institute is an important second local recording site for the Bureau of Meteorology.

Data recorded shows that over the past 100 years, there has been a gradual, but steady, increase in average annual rainfall from 480mm in the early part of the 20th century, to the current average of 580mm. Rainfall distribution across the year, on average, is relatively even at 48 mm/month, even during the summer months.

The temperature range can best be described as temperate, with mean daily maximum temperatures ranging from 12.5ºC [54.5ºF] in July to 31.2ºC [88.16ºF] in January. Summer temperatures can regularly approach, or exceed, 40ºC [104ºF] for up to a week at a time. Mean daily minimum temperatures range from 2.7ºC [36.86ºF] in July to 16.2ºC [61.16ºF] in February, with many frosts occurring during the winter months.