Weekend forecast: heat continues, humidity drops
I’ll get back to the weekend forecast shortly, but first I have to mention our Friday heat advisory.
Highs will reach the 90s in many areas on Friday afternoon, with dew points in the 60s to around 70. Heat index values will sometimes be above 95 degrees this Friday afternoon and early. evening. For this reason, the National Weather Service issued a noon to 8 p.m. heat advisory this Friday for the Twin Cities metropolitan area and several other counties in Minnesota and western Wisconsin, which are shaded orange in the portion. bottom of the following image:
Risk of rain
Parts of northern and central Minnesota could see scattered showers and an isolated thunderstorm Friday afternoon. The risk of showers and thunderstorms increases over Minnesota and western Wisconsin Friday evening and overnight Friday evening. A few showers and a thunderstorm could persist early Saturday morning in southeastern Minnesota and parts of western Wisconsin. Saturday afternoon and Sunday always seem dry.
The National Oceanic and Atmospheric Administration (HRRR) High-Resolution Rapid-Refresh (HRRR) forecast model shows the potential rainfall pattern from Friday evening to Saturday morning:
NOAA’s North American Mesoscale (NAM) forecast model shows less rain coverage than the HRRR model from Friday evening to Saturday morning;
We need some rain so hopefully the HRRR model is closer to the rain cover we are seeing this Friday night and tonight. Sunday looks dry in most of Minnesota and western Wisconsin.
Potential for severe weather
The NWS Storm Prediction Center shows a slight risk of severe weather Friday afternoon through Friday evening in northern Minnesota and part of northwestern Wisconsin:
Scattered severe thunderstorms are possible in the low risk area, which is shaded yellow. A marginal risk of severe weather (shaded dark green) includes additional parts of Minnesota and parts of Wisconsin. Marginal risk means that an isolated severe thunderstorm is possible. Our risk of a thunderstorm in the Twin Cities metropolitan area may last until Friday evening and then continue through night.
Weekend weather and dew points
Our average high temperature in the Twin Cities is 84 degrees at this time of year. The metropolitan area could reach the mid-90s this Saturday. Many places will peak in the 90s on Saturday, with the 80s in far north Minnesota:
The drier air moves behind a front on Saturday. Saturday morning dew points can still be a bit scorching in extreme southern Minnesota, but comfortable dew points will cover most of Minnesota in the afternoon.
Returning to the forecast for high temperatures, Sunday highs will reach 90 degrees in the south and 80 degrees in northern Minnesota.
Sunday dew points will be in the comfortable 50s.
You can hear my weather updates live on MPR News at 7:35 am, 9:35 am and 4:39 pm every Saturday and Sunday.
You make MPR News possible. Individual donations are the source of the clarity of our reporters’ coverage across the state, the stories that connect us, and the conversations that offer insight. Help ensure that the MPR remains a resource that brings Minnesotans together.