Weather
Iowa Winter Weather 2026/27: 10 Steps Before December Snow
Des Moines, IA – A powerful December winter storm could leave Iowa residents facing snow covered highways, frozen plumbing, dangerous wind chills and power outages lasting several days. With winter 20
By Lauren Beckett · 2026-11-15T17:42:55.522Z
Des Moines, IA – A powerful December winter storm could leave Iowa residents facing snow covered highways, frozen plumbing, dangerous wind chills and power outages lasting several days. With winter 2026/27 approaching, homeowners across Des Moines, Polk County, the greater Des Moines metropolitan area and communities throughout Iowa should prepare before heavy snow, blizzard conditions and extreme cold threaten their homes.
According to winter safety guidance from the National Weather Service and Iowa Homeland Security and Emergency Management, winter storms can produce significant snowfall, hazardous ice accumulation, dangerous wind chills and widespread transportation disruptions. Northern and western Iowa face particular risks from blowing snow and ground blizzards, while central and eastern communities can experience heavy snow, freezing rain and damaging winds.
Here are 10 critical steps Iowa homeowners should take before December snowstorms and extreme cold threaten their properties.
1. Inspect Your Roof Before Heavy Snow Accumulates Iowa roofs can experience substantial snow loads, particularly when repeated snowfall is followed by freezing rain or additional heavy, wet snow.
Inspect shingles, flashing, gutters and attic spaces for existing damage.
Homeowners in Des Moines, Ames, Ankeny and West Des Moines should check aging roofing materials and blocked drainage systems.
Residents in Mason City, Decorah, Spencer and other northern Iowa communities should prepare for repeated snow accumulation and drifting.
Watch for sagging ceilings, new cracks or unusual structural noises. Never climb onto an icy roof.
2. Protect Water Pipes Before Extreme Cold Arrives Frozen pipes can burst and cause extensive interior flooding.
Insulate exposed plumbing in basements, crawl spaces, garages and exterior walls.
Disconnect garden hoses, protect outdoor faucets and locate the home's main water shutoff valve.
Older homes in Des Moines, Cedar Rapids, Davenport, Dubuque and Waterloo may contain plumbing routed through poorly insulated spaces.
Maintain adequate indoor heating during cold outbreaks, including when traveling.
Open cabinet doors beneath vulnerable sinks during extreme cold to improve warm air circulation.
3. Service Your Furnace or Boiler Before December A heating failure during an Iowa winter storm can quickly become a life threatening emergency.
Schedule professional inspections of natural gas furnaces, boilers, heat pumps and other heating equipment.
Replace appropriate filters, verify thermostat operation and check heating fuel supplies.
Residents using propane, heating oil, fireplaces or wood burning equipment should arrange inspections and maintain adequate fuel supplies.
Rural Iowa households relying on propane should check tank levels and arrange deliveries before major storms make roads difficult to access.
Keep heating exhaust outlets clear of drifting snow.
Never use kitchen ovens or outdoor cooking equipment for indoor heating.
4. Prepare for Power Outages Lasting Several Days Heavy snow, freezing rain and strong winds can damage electrical lines and utility infrastructure.
Communities across Polk, Linn, Scott, Black Hawk and Woodbury counties may experience outages when ice covered branches or strong winds damage power lines.
Rural communities can face additional restoration challenges when drifting snow blocks access roads.
Keep flashlights, batteries, charged power banks and emergency radios accessible.
Households relying on electrically powered medical equipment should establish backup arrangements.
Portable generators must operate outdoors, at least 20 feet from windows, doors and vents, with exhaust directed away from buildings.
Never operate generators inside garages, basements or enclosed porches.
5. Build a Winter Storm Emergency Supply Kit Maintain at least three days of emergency supplies, with additional provisions for households in isolated areas.
Store one gallon of drinking water per person daily, nonperishable food, prescription medications, blankets, first aid equipment and pet supplies.
Residents in rural northern and western Iowa should consider additional provisions if blizzard conditions make roads impassable.
Homes relying on electrically powered private wells should store extra water because pumps may stop functioning during outages.
Farm households should also plan for livestock water, feed access and backup power for essential agricultural equipment.
Keep emergency supplies accessible without requiring travel during dangerous conditions.
6. Prevent Ice Dams and Expensive Interior Water Damage Ice dams develop when melting roof snow refreezes near colder roof edges, potentially forcing water beneath roofing materials.
Inspect attic insulation, seal accessible air leaks and maintain appropriate ventilation.
Replace deteriorated weatherstripping around windows and exterior doors.
Clean gutters and inspect downspouts before freezing conditions arrive.
Homes experiencing recurring ice dams should receive professional evaluations.
Avoid attempting dangerous roof repairs during icy weather.
7. Remove Hazardous Tree Limbs Before Snow and Ice Strike Heavy snow and freezing rain can break weakened branches, damaging homes, vehicles and electrical infrastructure.
Inspect trees near roofs, garages, driveways and overhead utility lines.
Arrange professional removal of dead or unstable limbs.
Residents in wooded neighborhoods around Iowa City, Cedar Falls, Council Bluffs and Dubuque should pay particular attention to branches overhanging structures.
Never approach fallen electrical wires or attempt to remove branches touching power lines.
8. Prepare Snowblowers, Vehicles and Emergency Access Iowa snowstorms can rapidly bury driveways and create dangerous road conditions.
Inspect snowblowers, shovels and ice melting supplies before December.
Check equipment condition and store fuel safely.
Keep exterior stairways, emergency exits, heating appliance vents and nearby fire hydrants accessible.
Drivers should carry blankets, winter clothing, phone chargers, flashlights and other emergency vehicle supplies.
Monitor conditions along Interstate 80, Interstate 35, Interstate 29, Interstate 380 and Interstate 74.
Residents in western and northern Iowa should be especially cautious when strong winds produce ground blizzards and near zero visibility, even after snowfall has ended.
Avoid unnecessary travel during blizzard warnings or periods of dangerous wind chills.
9. Test Carbon Monoxide Detectors Before Using Backup Heat Carbon monoxide poisoning becomes a serious winter danger when heating equipment malfunctions or generators are used improperly.
Test smoke and carbon monoxide alarms and replace batteries or devices according to manufacturer instructions.
Heavy snowfall can obstruct vehicle exhaust pipes and heating appliance vents.
Never run a vehicle with its tailpipe blocked by snow.
Keep generator exhaust away from buildings and never use charcoal grills, camping stoves or kitchen ovens for indoor heating.
Anyone experiencing symptoms of possible carbon monoxide exposure should move to fresh air immediately and call 911.
10. Establish a Family Blizzard Emergency Plan Identify where household members can safely shelter if electricity or heating becomes unavailable.
Keep emergency contacts written down and locate warming centers when local officials announce their availability.
Check on older neighbors, residents with disabilities and people living alone.
Monitor National Weather Service forecasts, Iowa Homeland Security and Emergency Management announcements and Iowa 511 road conditions.
Residents in rural communities should establish communication plans before heavy snowfall restricts travel.
Families should also identify alternate shelter arrangements if prolonged power outages make their homes unsafe.
Why December Preparation Matters for Iowa Winter 2026/27 Winter weather risks vary considerably across Iowa.
Des Moines, Ankeny, West Des Moines and central Iowa can experience heavy snow, freezing rain, dangerous wind chills and widespread commuter disruptions.
Cedar Rapids, Iowa City, Davenport and eastern Iowa may encounter accumulating snow, hazardous ice and rapidly changing temperatures.
Waterloo, Cedar Falls, Mason City and northern Iowa face additional risks from extreme cold, substantial snowfall and blowing snow.
Sioux City, Council Bluffs, Spencer and western Iowa can experience severe ground blizzards when strong winds sweep across open agricultural areas.
Ames, Marshalltown, Fort Dodge and north central Iowa may encounter heavy snow, drifting and hazardous rural highways.
Dubuque, Decorah and northeastern Iowa face additional challenges from steep roads, wooded terrain and icy conditions along the Mississippi River corridor.
Iowa's open landscape and exposure to Arctic air can create dangerous winter conditions even when snowfall totals are relatively modest. Strong winds can lift existing snow from fields, producing whiteout conditions and dangerous travel long after a storm has passed.
This preparedness guide does not predict a specific December 2026 blizzard. Significant winter storms remain a recurring seasonal threat, but residents should rely on updated National Weather Service forecasts for actual storm timing and expected impacts.
Waiting until a winter storm warning is issued can leave households scrambling for heating fuel, emergency supplies, backup power and snow removal equipment.
For Iowa residents, completing these 10 preparations before December storms develop could mean the difference between safely weathering severe winter conditions and facing frozen plumbing, heating failures, expensive property damage or dangerous emergency travel.