Reality Check · St. Louis, MO
2026 GMC Sierra EV AT4 / Denali in St. Louis, MO
Winter range, charging cost and how far it goes, worked out for St. Louis's weather, grid and prices.
St. Louis's winters are cool rather than cold: on a typical January day (32°F) a Sierra EV AT4 / Denali gets an estimated 349 miles, 15% under its 410-mile rating, about the same as in the coldest week (around January 14, when it averages 32°F). By June it's back to about 429. Charging at home at Missouri's average rate (16.1¢/kWh) costs about $95 a month for 38 miles a day, about a third of the $291 a gas Sierra costs on the Midwest's gas. St. Louis's grid (SERC Midwest) is 62% dirtier than the US average, but charging on it still makes 47% 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
405mi
At St. Louis's typical October day, 58°F · 35% highway
Winter lowEstimated
348mi
January, 32°F · lows near 24°F
Home chargingEstimated
$95/mo
8.2¢ a mile at 16.1¢/kWh. Gas Sierra: $291/mo
St. Louis's grid
1.24lb CO₂/kWh
SERC Midwest (EPA eGRID): 62% dirtier than the US, 47% less CO₂ than gas
St. Louis, 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 · 35°F
12% below its 410-mile rating · coldest week 348 mi
360mi
Spring Mar–May · 56°F
About its rating
403mi
Summer Jun–Aug · 77°F
5% above its rating
429mi
Fall Sep–Nov · 57°FNow
About its rating
404mi
A Sierra EV AT4 / Denali's range through a St. Louis yearEstimated
Each month at St. Louis's 30-year normal temperature, 35% highway. 13 days a year average below freezing.
How far it goes from St. Louis, on real roadsEstimated
In October, from a full charge with 10% in reserve: about 182 mi out and back, 364 mi one way (January: 314 mi). Dots are DC fast chargers by network.
Fast charging around St. Louis
PlugLog's map of every public charger. Tesla-only Superchargers aren't counted.
- 98DC fast chargers within 25 mi
- 0.1 mito the nearest
- ChargePoint178 in reach
- EVgo139
- Tesla Supercharger122
- EV Connect120
- Blink79
Road trips in October, about, by road: Fayetteville (349 mi) and Des Moines (337 mi) one way on a charge; Little Rock (368 mi) with one fast stop.
Questions St. Louis drivers ask
How far can a Sierra EV AT4 / Denali go in a St. Louis winter?
About 349 miles on a typical January day (32°F) and about the same in the coldest week of the year (around January 14, 32°F on average), estimated from real EV drives at those temperatures. That's 15% below its 410-mile rating, mostly from heating the cabin and the battery. St. Louis averages 13 days a year below freezing.
How much does it cost to charge a Sierra EV AT4 / Denali in St. Louis?
About $95 a month at home for 38 miles a day, at Missouri's average home electricity rate of 16.1¢/kWh: about 8.2¢ 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 St. Louis?
Not at 38 miles a day: a 120 V outlet adds only about 31 miles in 12 hours on an average day (27 in the coldest week). Plan on 240 V, which fills it from 10% in about 17 hours.
Is it greener to drive electric on St. Louis's grid?
Yes. St. Louis's grid (SERC Midwest) is 62% dirtier than the US average, but a Sierra EV AT4 / Denali charged on it still makes 47% 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 St. Louis
Sources: temperatures, 30-year normals (NOAA 1991–2020) at Cahokia St Louis Airport, IL; home electricity, EIA (Missouri, 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.