High Level residents can look forward to a warm start to the week, with temperatures well above normal for late September. Environment Canada is forecasting a high of 21°C for Monday, September 21, 2026, which is about 8 degrees warmer than the seasonal normal of 13°C for this time of year.
After a cloudy start to the week, sunny conditions are expected to arrive Wednesday and continue through Thursday, with daytime highs of 17°C on Tuesday and 15°C on both Wednesday and Thursday. However, the clear skies will also bring a risk of frost overnight, as temperatures are predicted to dip to 4°C Monday night and then drop to 2°C, 0°C, and -1°C over the subsequent nights.
By Friday, the warm spell will begin to fade, with a high of just 13°C, which is right at the normal for late September. The weekend will see a slight rebound, with highs of 16°C on Saturday and 15°C on Sunday under a mix of sun and cloud.
The warm start to the week is a notable reprieve for the northern Alberta town, where the average first fall frost occurs around August 25. With a growing season of only 79 days, local gardeners and farmers have already been dealing with frost risk for nearly a month.
There is also a 30 percent chance of showers late Monday afternoon, with a risk of a thunderstorm, according to the forecast. Residents are advised to enjoy the warm days while they last and to protect any remaining frost-sensitive plants during the overnight hours.
