Does It Snow in Wyoming? When, Where, and Why the Wind Matters More Than the Inches
- Yes, it snows in Wyoming from fall into late spring, and mostly in March and April
- Ground blizzards and I-80 closures: why Wyoming snow storms are about wind
- Home backup for wind-driven snow: 120V Basics vs. 240V needs EcoFlow TITAN Classic and EcoFlow TITAN Plus
- Is it snowing in Wyoming right now? WYDOT 511, your NWS office, and avalanche forecasts
- Wyoming power outages: Rocky Mountain Power, Black Hills Energy, Lower Valley Energy, and Co-ops
- Conclusion
- FAQs
Wyoming gets snow from fall into late spring, but the timing may surprise newcomers. Across much of the state east of the Continental Divide, March and April are often snowier than January. Strong winds also make winter storms more dangerous by blowing snow across roads and causing near-zero visibility.
This guide covers snowfall in major Wyoming towns, ground blizzards and I-80 closures, home backup power, live road and weather updates, and how to report power outages. It also explains the limits of home battery systems. It does not provide a live forecast or promise that a battery can run an entire heating system.
Yes, it snows in Wyoming from fall into late spring, and mostly in March and April
Snow can fall in Wyoming from October through May. At lower elevations, it may begin in late September. However, snowfall patterns vary across the state. The Continental Divide separates two broad snow seasons.
East and west Wyoming have different snow seasons
East of the Continental Divide, March and April are generally the snowiest months. This pattern affects places such as Cheyenne, Casper, Rawlins, Douglas, Riverton, and Lander.
West of the Divide, including Jackson, Afton, Evanston, and Pinedale, snowfall is usually heaviest from December through early March. Even lower-elevation areas can receive several heavy snowfalls each year. Strong winds can also move snow into deep drifts, making roads difficult to use.
Average annual snowfall in Wyoming
City | Average annual snowfall |
Cheyenne | 62.9 inches |
Casper | 71.8 inches |
Lander | 87.6 inches |
Source: National Weather Service 1991–2020 climate normals.
These figures are long-term averages, not yearly predictions. Actual snowfall can vary widely. Cheyenne, for example, received 35.1 inches in 2025, well below its 62.9-inch annual normal.
Snow can also fall in summer at some locations. Lander's record June snowfall is 18.4 inches, recorded in 1947. No snowfall has been recorded there in July or August.
Wyoming sees nearly every form of winter weather from snow to ice, and spring storms can be the heaviest of the year east of the Divide.
Snow totals tell only half the Wyoming story. The next section explains how wind turns ordinary snow into ground blizzards that close I-80 for days.
Ground blizzards and I-80 closures: why Wyoming snow storms are about wind
In Wyoming, a blizzard does not always require heavy snowfall. Strong winds can lift snow from the ground and reduce visibility to near zero, even when the sky is clear. Roads may remain closed after snowfall ends because drifting snow continues to create dangerous conditions.
How does a ground blizzard develop?
The National Weather Service defines a blizzard as winds of at least 35 mph combined with falling or blowing snow that reduces visibility to less than a quarter mile for at least three hours. Blowing snow can come from new snowfall or snow already on the ground.
Blizzard or near-blizzard conditions can last a day or two. Severe blizzards lasting more than three days are less common.
Why can I-80 closures last for hours?
The Wyoming Department of Transportation (WYDOT) may use rolling closures when a community reaches capacity for services. Drivers can be held in one town while officials manage conditions farther along the route.
Before travelling, check WYDOT road conditions. Never drive around road closure. If a blizzard is forecast, charge your phones and prepare food, water, and other supplies before strong winds arrive.
Wind also increases the risk of power outages. That makes it important to know which household circuits need backup power before winter storms begin.
Extreme wind chill is part of why winter blackouts are more dangerous than summer ones, especially for older adults and young children.
The same wind that closes I-80 also takes down power lines, so the next section sorts out which home circuits to keep running and which system fits them.
Home backup for wind-driven snow: 120V Basics vs. 240V needs EcoFlow TITAN Classic and EcoFlow TITAN Plus
During a Wyoming ground blizzard, focus first on the electrical loads your household needs most. These may include a refrigerator, lights, a Wi-Fi router, and the blower and controls of a compatible gas furnace. Homes with 240V appliances need a different backup plan.
A gas furnace burns fuel for heat, but its electrical parts still need power. Carrier's Comfort 80 furnace data lists a 115V electrical supply, with maximum current varying by model. Check your furnace's nameplate before choosing a backup system. A battery may power its electrical components, but that does not guarantee that it will run the entire heating system or maintain a set indoor temperature.
EcoFlow TITAN 5000 Classic
The EcoFlow TITAN 5000 Classic is designed for essential 120V loads. Its listed features include:
EcoFlow TITAN 5000 Plus
The EcoFlow TITAN 5000 Plus is intended for higher-power backup setups that include compatible 240V loads. Its listed features include:
How to choose the right backup system?
Make two lists before winter. The first should include essential 120V loads, such as lights, a refrigerator, a router, and compatible gas furnace controls. If these are your only needs, the EcoFlow TITAN 5000 Classic with the compatible 120V Smart Home Panel 10 configuration may fit.
The second list should include any compatible 240V appliances, such as a well pump, electric dryer, heat pump outdoor unit, or electric furnace. If you need to power these, compare the EcoFlow TITAN 5000 Plus with the appropriate 240V configuration.
Ask a licensed electrician to check each appliance's starting and running wattage, total demand, and wiring requirements. Neither system guarantees that every appliance will run at once.
Estimate runtime before an outage
Consider a furnace rated at 8.3 amps and 115V. At its current rate, it would draw about 955W. A 5,000Wh battery, with 85% usable energy assumed for conversion losses, provides about 4,250Wh. Dividing that figure by 955W gives an estimated runtime of roughly 4.5 hours.
This is a simplified worst-case estimate, not a guarantee. Actual runtime depends on furnace cycling, other loads, and battery conditions. A refrigerator and lights will reduce the available time, while extra batteries may extend it.
Both systems are rated IP20 and should be kept in a dry, ventilated indoor space within their specified operating temperatures. If you use a portable generator, never run it indoors or in a garage. Keep it at least 20 feet from doors, windows, and vents. Have an electrician install any required transfer switch or interlock, and never connect a generator in a way that backfeeds the grid.
Running through a winter energy prep checklist for blackouts in October, before the first ground blizzard, leaves time to schedule an electrician.
Backup power covers the house. For the roads, the next section lists the live checks WYDOT and the National Weather Service publish.
Is it snowing in Wyoming right now? WYDOT 511, your NWS office, and avalanche forecasts
This article cannot confirm whether it is snowing in Wyoming right now. Weather and road conditions can change quickly, especially during high winds. Use official updates before driving or heading into the mountains.
Check WYDOT and the National Weather Service
Visit WYDOT's road conditions website, use the Wyoming 511 app, or call 511 for road updates. WYDOT warns that closures may result from whiteouts, drifting snow, or crashes. Never enter a closed road, even if the route appears clear.
You can also sign up for WYDOT 511 Notify alerts. Check the National Weather Service office serving your county for current forecasts, watches, and warnings. The Cheyenne office provides snowfall probability maps and the Winter Storm Severity Index.
Table: Which NWS office covers your part of Wyoming (NWS County Warning and Forecast Area listings, Central and Western Regions)
NWS office | Wyoming counties |
NWS Cheyenne (weather.gov/cys) | Albany, Carbon, Converse, Goshen, Laramie, Niobrara, Platte |
NWS Riverton (weather.gov/riw) | Big Horn, Fremont, Hot Springs, Johnson, Lincoln, Natrona, Park, Sublette, Sweetwater, Teton, Washakie |
NWS Rapid City, South Dakota | Campbell, Crook, Weston |
NWS Billings, Montana | Sheridan |
NWS Salt Lake City, Utah | Uinta |
Check mountain snow and avalanche forecasts
Backcountry travellers should check the Bridger-Teton Avalanche Center before entering avalanche terrain. Its forecasts cover areas including the Tetons, Snake River Range, Wyoming Range, and Togwotee region. Read the forecast for your planned location and travel date.
Drivers using Teton Pass should also check WYDOT's SAFE PASS website for current requirements. The program applies to certain large vehicles, RVs, and vehicles towing trailers.
Long I-80 closures are a good reason to keep emergency items in your car all winter, from blankets and water to a way to charge your phone.
Live roads and weather checks cover the drive; for power at home, the last section lists Wyoming's utilities and how to report an outage to each.
Wyoming power outages: Rocky Mountain Power, Black Hills Energy, Lower Valley Energy, and Co-ops
Wyoming does not have a single electricity provider. Your outage map and reporting number depend on your utility or local cooperative.
Find your utility's outage information
Rocky Mountain Power: Check its outage map and reporting options for your service area.
Black Hills Energy: Use its outage page to check reported interruptions and report an outage.
Lower Valley Energy: Check its website for outage information and service updates.
Electric cooperatives: Rural homes may receive power from a local cooperative. Use your cooperative's official website for its outage map and contact details.
Check the outage map first, then report an interruption through your provider's official channels. During a widespread storm, updates may change as crews assess damage and road access.
Stay away from downed power lines
Never touch or approach a fallen power line. Keep others away and call 911 if a line creates an immediate danger. Do not assume a fallen line is safe because it appears inactive.
Winter outages can last longer when strong winds prevent crews from reaching damaged equipment. Keep drinking water, food, warm clothing, flashlights, and phone charging options ready before severe weather arrives.
When a ground blizzard keeps crews off the roads, preparing for a long-term power outage means having food, water, heat, and charging covered for several days.
Conclusion
Yes, it snows in Wyoming from fall into late spring. East of the Continental Divide, March and April are generally the snowiest months. West of the Divide, the heaviest snowfall usually comes from December through early March.
Wind is a major part of the state's winter weather risk. It can turn existing snow into a ground blizzard, reduce visibility, close I-80, and contribute to power outages.
Before winter, bookmark WYDOT road conditions, identify your local National Weather Service office, and save your utility's outage information. Make a list of essential household appliances and check their voltage, starting watts, and running watts.
If you need backup power, the EcoFlow TITAN 5000 Classic may suit essential 120V loads. If you also need compatible 240V appliances, compare the EcoFlow TITAN 5000 Plus and its required installation. Have a licensed electrician verify your setup before an outage occurs.
FAQs
Does it snow in Wyoming?
Yes. Based on 1991–2020 climate normals, Cheyenne averages 62.9 inches of snow annually, Casper averages 71.8 inches, and Lander averages 87.6 inches. Actual totals vary by year and location.
What is the snowiest month in Wyoming?
March and April are generally the snowiest months east of the Continental Divide. West of the Divide, including Jackson and Pinedale, snowfall is usually heaviest from December through early March.
How can I tell if it's snowing in Wyoming right now?
Check WYDOT's road conditions website or the Wyoming 511 app for travel updates. Use the National Weather Service office serving your county for current forecasts and alerts.
What is a ground blizzard?
A ground blizzard occurs when strong winds lift snow already on the ground and reduce visibility. It can create dangerous driving conditions even when little or no new snow is falling.
Can a home battery keep my furnace running in a Wyoming blizzard?
A compatible battery may power a gas furnace's electrical components, including its blower and controls. Runtime depends on power demand, battery capacity, and other connected appliances. It does not guarantee that the entire heating system will operate.
For press requests or interview opportunities, reach out to our media team
media.na@ecoflow.com