Hastings, MN Weather + On This Date: Tuesday, August 18, 2026

Tuesday, August 18, brings a mixed summer forecast to Hastings, Minnesota, with a high near 79°F, clouds gradually giving way to more sunshine and a 50% chance of showers and thunderstorms mainly after 5 p.m. Today’s time capsule revisits a painful 1862 turning point in the U.S.-Dakota War, the 1868 solar observation connected to helium’s discovery and Tennessee’s decisive 1920 ratification of the 19th Amendment. It’s a practical local read for planning work, errands, outdoor time and Tuesday evening while adding three carefully sourced moments from history.