Snow the main feature of December weather

News, Weather

January 5th, 2026 by Ric Hanson

(Radio Iowa/KJAN data) – State Climatologist Justin Glisan says snow was the main feature of the weather in December. “You look across the swath from southeastern Iowa up to northwestern Iowa, above average by anywhere from four to eight inches. And then you get into the northeast corner and the southwest corner, it’s below average in terms of snowfall,” Glisan says. Glisan says the snow impacted temperatures in December.

“Temperatures were about one-point-seven degrees below average. And again, that was anchored by colder temperatures and more snowpack in eastern Iowa,” he says. “Precipitation about an inch, that’s about four-tenths of an inch below average.” Glisan says December was pretty ordinary on most accounts.

“On the snowfall, even when we had that above average swath across the state, we came in right about average. The normal was seven-point-nine inches, preliminarily, we’re about eight inches,” Glisan says. He says there’s nothing in the December weather that’s noteworthy as far as records go.

Weather data for Atlantic during the month of December, 2025 (Compiled here at KJAN – the official National Weather Service reporting site), shows we were about 5-degrees warmer than normal for a high, and 2-degrees warmer for the Low. The average High last month was 38. The average Low was 16. The warmest day last month was 56 on the 22nd. Our coolest morning was -10 degrees on the 4th.

Snowfall amounted to one-inch. Rain and melted snowfall for the month was just .43″ of an inch, which was 0.68-inches below the normal for December, in Atlantic.

Looking ahead, we find the High temperature for the month of January in Atlantic, is 29 degrees, while the average Low is 9. Precipitation typically amounts to .84-inches. Check back with us during the first week of February, 2026, to see how our actual weather data compared to the historical averages.