Glasgow, Montana – Montana’s summer heat builds into the high 80s by Friday, July 18, as thunderstorms creep into the Glasgow area by nightfall.
According to the National Weather Service, Glasgow will see mostly sunny skies and a high of 88°F on Friday. But moisture pushes in late, bringing a 50 percent chance of thunderstorms after 5 p.m., with possible gusty winds. Drivers along Highway 2 should plan for sudden downpours and reduced visibility.
Saturday continues the stormy trend, with another 50 percent chance of showers and storms, mainly after noon. Winds from the southeast could gust up to 17 mph, adding to instability. Rain could dampen weekend events and outdoor plans in Valley County, with storm activity most likely before midnight Saturday.
By Sunday, skies clear slightly and the temperature jumps to 89°F, but another round of storms is possible late Sunday night. Monday brings drier air, mostly sunny skies, and a high near 87°F — though a 30 percent chance of storms returns Monday night.
Looking Ahead: July 18–23 Glasgow 5-Day Forecast
- Friday: Mostly sunny, 88°F. Thunderstorm chance increases after 5 p.m.
- Saturday: 50% chance of storms. High 88°F, breezy.
- Sunday: Mostly sunny, 89°F. Storms possible after dark.
- Monday: Mostly sunny, 87°F. Storm chance returns Monday night.
- Tuesday: Thunderstorms likely, high near 83°F.
- Wednesday: Slight chance of storms, high near 81°F.
⚠️ Expect more storm advisories through the weekend. Stay weather-aware and limit outdoor plans during afternoon and evening hours.
