Weather Whiplash: As Temps Near 100 Degrees in the Upper Midwest, Does It Signal a Bigger Problem for Summer?

The weather this week just might prove how unusual the spring of 2024 has been. From the disparities in moisture, to temperature swing of 60°F in just a matter of days in North Dakota, the weather pattern is abnormal, and weather models are confused on snowfall totals even 10 days out.

Eric Snodgrass, Science Fellow and Principal Atmospheric Scientist for Nutrien Ag Solutions, says this spring has been anything but normal.

“I don’t think anybody has told me, ‘This spring’s been pretty much what I expected.’ I think most folks have been saying, ‘Wow, when is this [rain] going to quit so I can get in the fields versus, hey, we got everything done early. Just don’t send a frost my way.’”

Just last weekend, cool temperatures gripped the Great Lakes with frost warnings. And with another cold blast on the way for the Plains and northwest this weekend the temperature swings continue.

“Some folks are still battling with those cold late spring temperatures” Snodgrass says. “But I think that you’re going to look back on spring of 2025 and think this didn’t look anything like 2023, and it definitely doesn’t look like 2024. Are we looking at something entirely different for this growing season than our past few years for reference? And I think the answer to that is yes.”

Weather Whiplash Hits the Northern Plains

North Dakota reached record-breaking temperatures already this week. The National Weather Services (NWS) in Bismark reports a record temperatures of 97°F on Monday, which beat the previous record of 92°F set in 1880.

Those temperatures will drop to near freezing by this weekend with some models even pointing to snow. Snodgreass says the weather models aren’t in agreement about snowfall amounts, but one thing is certain: it will get much colder.

The storm system Snodgrass is watching will hit early next week, but he says the models are confused and not handling the cold and snow risk very well.

This is the GFS model run on Sunday pointed to as much as 2' of snow in parts of North Dakota and South Dakota early next week. Snodgrass says that model has been unreliable recently, so don’t bank on that.

“The GFS has been having serious problem lately,” Snodgrass told AgWeb. “Do not rely on the GFS right now.”

(Eric Snodgrass)

Meanwhile, the European mode also shows snow in the forecast, but Snodgrass says he doesn’t trust that model either. However, he says temperatures will drop even further before the snow chances next week.

“There are a pair of deeper lows that are following each other,” he says. “The first comes through and increases the severe storm risk Thursday and Friday, and the second one feeds on the cold air behind the first dropping temps even further giving rise to the chance for snow.”

Disparity in Moisture So Far This Spring

The good news is those cooler temperatures will come with chances of moisture, which will fall in areas of the country that need it. But that moisture will also hit the mid-South, an area that can’t seem to catch a break from the rain.

“Take a look at parts of the mid-South getting over to the southern Plains,” Snodgrass says. “I mean Oklahoma and Texas, we’ve got places that have had five to six times their normal amount of rainfall in the last 30 days. And then you go just north of it. Corners of Kansas, Colorado, most of Nebraska, Western Iowa, pockets of Illinois, Minnesota. You have spots that are like, hey, share the rain a little bit. And they’re looking at very, very dry conditions.”

(Eric Snodgrass)

The agricultural meteorologist is most concerned about Nebraska. He says it’s not just the fact that area has been lacking moisture recently, but the fact disappointing moisture over the winter is creating a deficit for subsoil moisture.

“We have very low soil moisture values in pockets of the western Corn Belt, while soils are completely saturated across the southern tier of the United States in pockets in the Northeast,” Snodgrass says. “So when you look at that, it’s the story of who’s been getting the rain and who’s not, and this spring has not been very equitable in the delivery of that rainfall.”

(Eric Snodgrass)

Drought Risk Still a Concern for Summer

The Climate Prediction Center recently released its outlook for summer, saying “ENSO-neutral will continue through the Northern Hemisphere summer and early autumn 2025.” The CPC says the forecast also favors ENSO-neutral with chances nearing 50% during the autumn.

What does this mean? Snodgrass says you don’t need a La Niña to produce drought.

“There’s often a thought process that you have to have a La Niña in order to have a drought in the summer in the Midwest. You don’t, right? The actual more important thing is the ocean temperatures off the Baja of California or in the Gulf of Alaska,” says Snodgrass. “We’ve already got cold ocean temperatures off the Bay of California. If we kind of double whammy that up with cold water in the Gulf of Alaska or even all the way back over toward Japan, hugging the land, that is the recipe for problems.”

(Eric Snodgrass)

Snodgrass says the forecast for June, July and August is pointing to risks of dryness, especially in July. Even the newer European model is indicating the growing chance of dryness this summer.

“Here’s the lesson: If in the next 40 days, those water temperatures warm, you know what’s going on? The atmosphere is gaining momentum,” Snodgrass says. “If it gains momentum, we tend to have more frequent weather systems and no major risk of drought. If they stay cool, we tend to have greater risk of central United States drought. That’s what I’m watching most closely over the next 45 days.”

(Eric Snodgrass)