WeatherAI
Seasonal Guide

Winter Weather Guide 2026-2027

Stay safe and informed during winter weather events. Learn about different types of winter precipitation, understand wind chill, and know when to take action.

Types of Winter Precipitation

Not all winter precipitation is created equal. Understanding the differences can help you prepare appropriately and stay safe. One storm can drop freezing rain on one side of town and sleet on the other, decided by a warm layer only a few hundred feet thick.

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Snow

Ice crystals that form in clouds and fall without melting. Accumulates and can cause travel issues, but is generally the safest form of winter precipitation.

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Sleet

Ice pellets that bounce when they hit. Snow melts in a warm layer, then refreezes before reaching the ground. Makes roads slippery.

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Freezing Rain

Most dangerous. Falls as liquid rain but freezes on contact with cold surfaces. Creates ice glazes on roads, trees, and power lines.

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Wintry Mix

Combination of precipitation types, often occurring when temperatures hover near freezing. Can change rapidly as temperatures fluctuate.

Understanding Wind Chill

Wind chill describes how cold it actually feels when wind is factored in. Moving air accelerates heat loss from exposed skin, making temperatures feel much colder than the thermometer shows.

Above 32F

Wet conditions still pose risks

Stay dry and dress for the conditions and time outdoors

0F to 32F

Cold

Limit outdoor exposure, dress warmly

Below 0F

Dangerous

Frostbite risk, minimize time outdoors

Wind chill alone cannot tell you whether outdoor exposure is safe. Rain, sweat, wet clothing, and time outside also matter. The CDC notes that hypothermia can occur even above 40°F when someone becomes chilled by rain, sweat, or cold water.

Winter Storm Alerts

The National Weather Service issues different types of winter weather alerts depending on severity and timing. Know the difference so you can prepare appropriately.

Winter Storm Watch

Significant winter weather possible within 24-48 hours. Prepare now: stock supplies, review travel plans, charge devices.

Winter Storm Warning

Heavy snow, sleet, or ice expected within 12-24 hours. Final preparations should be completed. Avoid travel if possible.

Ice Storm Warning

Significant ice accumulation expected. Extremely dangerous conditions. Power outages likely. Stay home if at all possible.

Blizzard Warning

Sustained wind or frequent gusts of 35 mph or more with snow reducing visibility to a quarter mile or less for at least three hours. Falling snow is not required, since blowing snow alone can meet it. Life-threatening conditions. Do not travel under any circumstances.

Winter Driving Safety

Before You Drive

  • ✓Clear all snow and ice from windows, mirrors, and lights
  • ✓Keep your gas tank at least half full
  • ✓Check tire pressure and tread depth
  • ✓Tell someone your route and expected arrival time
  • ✓Keep an emergency kit in your car

While Driving

  • ✓Reduce speed and increase following distance
  • ✓Brake gently to avoid skidding
  • ✓Watch for black ice, especially on bridges
  • ✓Use low-beam headlights in snow
  • ✓If you skid, steer in the direction you want to go

Frequently Asked Questions

What is the difference between freezing rain, sleet, and snow?
Snow forms when precipitation stays frozen from cloud to ground. Sleet (ice pellets) forms when snow melts then refreezes before hitting the ground, creating ice pellets. Freezing rain falls as liquid but freezes on contact with cold surfaces, creating dangerous ice glazes on roads and power lines.
What is wind chill and why does it matter?
Wind chill is how cold it feels when wind is factored in with the actual temperature. Moving air accelerates heat loss from your body. For example, an air temperature of 20F with a 15 mph wind feels like 6F. At 0F with a 15 mph wind, a wind chill near -19F, exposed skin can freeze in about 30 minutes; frostbite times depend on both temperature and wind, so check the NWS wind chill chart for your conditions.
What is the difference between a Winter Storm Watch and Warning?
A Winter Storm Watch means significant winter weather is possible in your area within 24-48 hours. A Winter Storm Warning means heavy snow, sleet, or freezing rain is occurring, imminent, or expected, typically within 12-24 hours. Exact criteria are set by each local NWS office. Warnings are more urgent and require immediate preparation.
How accurate are snow forecasts?
Snow forecasts have improved significantly but still carry uncertainty. Forecasters provide ranges (e.g., 4-6 inches) rather than exact totals. Accuracy depends on storm type, temperature profiles, and elevation. The rain-snow line can shift and dramatically change accumulations.
When should I avoid driving in winter weather?
Avoid driving during active freezing rain, when roads have black ice, during blizzard conditions with near-zero visibility, or when temperatures are dropping rapidly after rain. If you must travel, keep an emergency kit and inform someone of your route.

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