Spokane Valley's winters are cold and variable, with temperatures often dropping below freezing, especially in January and February. As spring approaches, temperatures gradually warm up, with March and April experiencing mild days and cooler nights. Summer months bring warmer temperatures, with June and July averaging above 20°C, but also experiencing occasional heatwaves. Autumn is similar to spring, with temperatures cooling down as winter sets in again, with September being the mildest month of the season. Overall, temperature fluctuations are common throughout the year, with average highs often around 10-15°C.