Storms Today… Sunny, Not Humid Tomorrow

Today will be warm and humid with scattered storms. In Sioux Falls, the best chance of storms will be this morning as scattered thunderstorms move across much of central and eastern South Dakota into Minnesota and Iowa. Another line of storms will develop across northern and northeastern South Dakota this afternoon with yet another line of thunderstorms possible across western and central South Dakota late this afternoon into this evening. The last line of storms will dissipate as it moves east overnight.

As I mentioned, today will be warm and muggy. High temps will be back in the mid 80s with a dew point in the low 70s. That will pull the heat index back into the low 90s this afternoon.

A cold front will slide east of our region overnight, taking the heat, humidity and storms along with it. Wednesday will be windy and cooler with high temps around 80 degrees. Thursday will be sunny and warmer but still not terribly humid.

Enjoy the break from the heat and humidity on Wednesday and Thursday, because the summer sauna will be cranked to the maximum all weekend. High temperatures will reach the upper 80s to low 90s with the heat index approaching 100 degrees on Friday, Saturday and Sunday. The weekend will be mostly sunny with just a slight chance of a random, isolated thunderstorm.

I don’t think we’re going to get much of a break from the heat, either. Long range models suggest that the warm, humid pattern will last well into next week.

Sunny, Warm Weather Continues

Our summery stretch of weather will continue today with lots of sunshine and high temps in the upper 80s. Tomorrow will be almost the same, just slightly warmer and a bit breezier.

Saturday will start with sunshine, but our next system will roll in late Saturday and Saturday night bringing a chance of rain and thunderstorms. Scattered rain and thunderstorms will continue into Sunday morning with sunshine and cooler high temperatures in the low 70s by Sunday afternoon.

High temps will stay below average – in the low 70s – through the middle of next week with another chance of scattered rain and thunderstorms late Tuesday into Wednesday.

T-Storms, Heavy Rain This Weekend

We have a couple of sunny, warm days ahead, but the weather is going to change in a very big way as we get closer to the weekend. Strong storms are possible later this week with rain and cooler temperatures through the weekend. Unfortunately, rain could be heavy. Two to three or more inches of rain is possible across parts of our region through early next week.

Today will be mostly sunny and a bit warmer than yesterday. High temperatures will range from the low to mid 80s this afternoon. It could be a bit breezy at times. Wind will be from the south at about 10-20 mph with occasional gusts to 25 mph across central and northern South Dakota.

We are keeping an eye on a system that it will bring a line of thunderstorms across North Dakota, parts of extreme northern and northeastern South Dakota into western Minnesota tonight. A couple of storms could be severe with large hail and strong straight-line wind gusts being the main threat. Storms will likely roll across northeastern South Dakota by mid to late evening and continue east/southeast into western Minnesota after midnight.

We will climb back into the 80s one more time tomorrow afternoon, then our weather pattern will begin a dramatic change that will take us through the weekend and into next week.

By tomorrow night, an area of low pressure will begin to strengthen over the Rocky Mountains and this will bring plenty of moisture and energy for rain and thunderstorms. Some storms could be severe tomorrow night and again on Friday and Friday night, but at this point I think our biggest threat will be the potential for heavy rain. As of right now, models are suggesting that the best chance for heavy rain will be late Friday into Friday night and again late Saturday into Sunday. Some places could get two to three or more inches of rain through this weekend. The pattern won’t change much by early next week, either. More rain is possible Monday, Tuesday and Wednesday.

In addition to the rain, temperatures will also drop considerably this weekend. After reaching the low to mid 80s tomorrow, high temps will drop into the upper 60s Friday and Saturday. Temps will continue to fall into the upper 50s to low 60s on Sunday and will stay there through early next week.

There is a lot that will be happening later this week into this weekend. Phil, Sam and I will be watching the forecast very closely and will have updates as it develops.