Reality Check · Milwaukee, WI
2026 GMC Sierra EV AT4 / Denali in Milwaukee, WI
Winter range, charging cost and how far it goes, worked out for Milwaukee's weather, grid and prices.
In a typical Milwaukee January (24°F), a Sierra EV AT4 / Denali gets an estimated 319 miles on a charge, 22% less than its 410-mile rating, and about the same in the coldest week of the year (around January 19, when it averages 23°F). By June it's back to about 418. Charging at home at Wisconsin's average rate (19.1¢/kWh) costs about $118 a month for 38 miles a day, against $291 for a gas Sierra on the Midwest's gas. Milwaukee's grid (RFC West) is 19% dirtier than the US average, but charging on it still makes 59% less CO₂ than gas.
Partly estimated. 2 of 5 temperature bands are from 117 real drives of this model; the rest come from 1,548 real drives in EVs at each temperature (and Recurrent's winter study below freezing), applied to its 410-mile rating. Each band switches to its own drives once it has 20 from 3 drivers.
October rangeEstimated
398mi
At Milwaukee's typical October day, 53°F · 35% highway
Winter lowEstimated
317mi
January, 24°F · lows near 16°F
Home chargingEstimated
$118/mo
10.2¢ a mile at 19.1¢/kWh. Gas Sierra: $291/mo
Milwaukee's grid
0.91lb CO₂/kWh
RFC West (EPA eGRID): 19% dirtier than the US, 59% less CO₂ than gas
Milwaukee, season by seasonEstimated
A Sierra EV AT4 / Denali's range on a full charge, averaged over each season's months (30-year normal temperatures), at 35% highway.
Winter Dec–Feb · 27°F
20% below its 410-mile rating · coldest week 317 mi
330mi
Spring Mar–May · 47°F
6% below its rating
386mi
Summer Jun–Aug · 71°F
3% above its rating
423mi
Fall Sep–Nov · 53°FNow
3% below its rating
398mi
A Sierra EV AT4 / Denali's range through a Milwaukee yearEstimated
Each month at Milwaukee's 30-year normal temperature, 35% highway. 85 days a year average below freezing.
How far it goes from Milwaukee, on real roadsEstimated
In October, from a full charge with 10% in reserve: about 179 mi out and back, 358 mi one way (January: 287 mi). Dots are DC fast chargers by network.
Fast charging around Milwaukee
PlugLog's map of every public charger. Tesla-only Superchargers aren't counted.
- 50DC fast chargers within 25 mi
- 1.2 mito the nearest
- ChargePoint226 in reach
- Tesla Supercharger117
- EV Connect104
- Red E Charge101
- EVgo87
Road trips in October, about, by road: Detroit (314 mi) and Indianapolis (307 mi) one way on a charge; Minneapolis (368 mi) with one fast stop.
Questions Milwaukee drivers ask
How far can a Sierra EV AT4 / Denali go in a Milwaukee winter?
About 319 miles on a typical January day (24°F) and about the same in the coldest week of the year (around January 19, 23°F on average), estimated from real EV drives at those temperatures. That's 22% below its 410-mile rating, mostly from heating the cabin and the battery. Milwaukee averages 85 days a year below freezing.
How much does it cost to charge a Sierra EV AT4 / Denali in Milwaukee?
About $118 a month at home for 38 miles a day, at Wisconsin's average home electricity rate of 19.1¢/kWh: about 10.2¢ a mile. A gas Sierra on the Midwest's average gas ($4.14 a gallon) costs about $291 a month for the same driving.
Can I charge a Sierra EV AT4 / Denali on a regular 120 V outlet in Milwaukee?
Not at 38 miles a day: a 120 V outlet adds only about 30 miles in 12 hours on an average day (24 in the coldest week). Plan on 240 V, which fills it from 10% in about 17 hours.
Is it greener to drive electric on Milwaukee's grid?
Yes. Milwaukee's grid (RFC West) is 19% dirtier than the US average, but a Sierra EV AT4 / Denali charged on it still makes 59% less CO₂ than a gas Sierra.
Check it for your own address
Your street, your daily miles, any temperature on the knob.
Sierra EV AT4 / Denali Reality Check near Milwaukee
Sources: temperatures, 30-year normals (NOAA 1991–2020) at Milwaukee Mitchell Airport, WI; home electricity, EIA (Wisconsin, July 2026); gas, EIA weekly (the Midwest); grid CO₂, EPA eGRID 2023; cold-weather range, PlugLog's real drives and Recurrent's winter study (Nov 2025); chargers, Open Charge Map and PlugLog. Updated Oct 22, 2026.