Reality Check · St. Louis, MO
2025 GMC Sierra EV 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 gets an estimated 317 miles, 19% under its 390-mile rating, and about 314 in the coldest week (around January 14, when it averages 32°F). By April it's back to about 383. Charging at home at Missouri's average rate (16.1¢/kWh) costs about $106 a month for 38 miles a day, against $300 for a gas Sierra on the Midwest's gas. St. Louis's grid (SERC Midwest) is 62% dirtier than the US average, but charging on it still makes 42% less CO₂ than gas.
Partly estimated. 2 of 5 temperature bands are from 116 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 390-mile rating. Each band switches to its own drives once it has 20 from 3 drivers.
October rangeEstimated
385mi
At St. Louis's typical October day, 58°F · 35% highway
Winter lowEstimated
314mi
January, 32°F; Jan 14–20 at 32°F · lows near 24°F
Home chargingEstimated
$106/mo
9.2¢ a mile at 16.1¢/kWh. Gas Sierra: $300/mo
St. Louis's grid
1.24lb CO₂/kWh
SERC Midwest (EPA eGRID): 62% dirtier than the US, 42% less CO₂ than gas
St. Louis, season by seasonEstimated
A Sierra EV's range on a full charge, averaged over each season's months (30-year normal temperatures), at 35% highway.
Winter Dec–Feb · 35°F
15% below its 390-mile rating · coldest week 314 mi
332mi
Spring Mar–May · 56°F
4% below its rating
376mi
Summer Jun–Aug · 77°F
8% below its rating
358mi
Fall Sep–Nov · 57°FNow
4% below its rating
375mi
A Sierra EV'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 173 mi out and back, 346 mi one way (January: 285 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
- ChargePoint138 in reach
- EVgo102
- Tesla Supercharger96
- EV Connect92
- Blink59
Road trips in October, about, by road: Des Moines (337 mi) and Chicago (324 mi) one way on a charge; Fayetteville (349 mi) with one fast stop.
Questions St. Louis drivers ask
How far can a Sierra EV go in a St. Louis winter?
About 317 miles on a typical January day (32°F) and about 314 in the coldest week of the year (around January 14, 32°F on average), estimated from real EV drives at those temperatures. That's 19% below its 390-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 in St. Louis?
About $106 a month at home for 38 miles a day, at Missouri's average home electricity rate of 16.1¢/kWh: about 9.2¢ a mile. A gas Sierra on the Midwest's average gas ($4.14 a gallon) costs about $300 a month for the same driving.
Can I charge a Sierra EV on a regular 120 V outlet in St. Louis?
Not at 38 miles a day: a 120 V outlet adds only about 29 miles in 12 hours on an average day (24 in the coldest week). Plan on 240 V, which fills it from 10% in about 10 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 charged on it still makes 42% less CO₂ than a gas Sierra.
Check it for your own address
Your street, your daily miles, any temperature on the knob.
Sierra EV 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.