Montana August Minimum Temperatures (image) The University of Montana Caption : This figure shows estimates of August normal minimum temperatures (Tmin) for the Montana portion of the dataset (top) and the corresponding uncertainty of the estimates (bottom). The crescent of colder Tmin values in the southwestern corner of Montana is the Big Hole Valley, which often collects cold air. Credit Jared Oyler/University of Montana Usage Restrictions None Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.