As Thanksgiving approaches, Iowans can expect a rollercoaster of temperatures and some uncertainty in precipitation forecasts. Here’s a detailed look at what you can expect for the week of Thanksgiving 2024.
Weekend Warm-Up (Saturday-Sunday)
A passing upper-level system in Canada will keep northern Iowa under some mid-level cloud cover on Saturday. While this will stunt warming in the north, southern Iowa could enjoy highs in the 50s. By Sunday, southerly winds and a surface cyclone in the Central Plains will usher in warmer temperatures across the state. Highs will generally range from the upper 40s to lower 60s, with the warmest temperatures likely near the Iowa-Missouri border. There’s even a 40% chance that a 60°F reading could occur in southern Iowa.
Early Week Changes (Monday-Wednesday)
Monday:
A weather system passing through the Midwest will bring colder air into Iowa. Highs will fall into the 30s, and it’s likely that northern Iowa will remain below freezing. Precipitation chances are minimal, with only a 10% chance of rain or snow in northeastern Iowa. Any precipitation that does occur is expected to be light and unlikely to accumulate.
Tuesday-Wednesday:
Temperatures will continue their downward trend, with highs ranging from the 30s to low 40s across much of the state. Overnight lows will dip into the teens and 20s, marking a return to winter-like conditions. Precipitation chances increase slightly on Wednesday, with some models hinting at light rain or snow in southern and eastern Iowa. However, the dry air in place may limit any significant accumulation.
Thanksgiving Day (Thursday)
Thanksgiving Day itself looks to remain chilly, with highs struggling to climb out of the low 30s. The forecast for precipitation is uncertain due to an active split jet stream, which makes it difficult to pinpoint whether Iowa will see any rain or snow. Current indications suggest that the most likely scenario is a dry Thanksgiving for most of the state, but there’s still a small chance for light snow or flurries, especially in southern Iowa. Stay tuned for updates as the week progresses.
Black Friday & Beyond
Following Thanksgiving, a strong upper-level system from Canada will plunge colder Arctic air into the region. Highs on Black Friday and through the weekend are expected to stay below freezing statewide. With overnight lows in the teens and single digits, winter will make its presence felt.
This cold pattern could persist into early December, as blocking high pressure over the North Pacific and Alaska reinforces a north-to-northwest flow of Arctic air into the Midwest.
Key Takeaways for Thanksgiving Week 2024:
- Weekend: Mild temperatures in the 40s-50s, with 60°F possible in southern Iowa.
- Early Week: Turning colder with highs in the 30s, minimal precipitation expected.
- Thanksgiving Day: Chilly with highs in the low 30s, precipitation chances uncertain but trending dry.
- Post-Thanksgiving: Arctic air dominates, with highs below freezing and frigid nights.
Be sure to plan ahead for the colder weather and keep an eye on the evolving forecast for any last-minute changes, especially if you’re traveling. From all of us at IowaWeather.com, have a safe and happy Thanksgiving!