Reality Check · Oklahoma City, OK
2025 GMC Sierra EV in Oklahoma City, OK
Winter range, charging cost and how far it goes, worked out for Oklahoma City's weather, grid and prices.
Winter barely touches range in Oklahoma City: at a typical January's 38°F, a Sierra EV gets an estimated 349 miles on a charge, 11% under its 390-mile rating, but about what it gets all year. Charging at home at Oklahoma's average rate (14.3¢/kWh) costs about $93 a month for 38 miles a day, about a third of the $300 a gas Sierra costs on the Midwest's gas. Oklahoma City's grid (SPP South) is 14% dirtier than the US average, but charging on it still makes 60% 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
383mi
At Oklahoma City's typical October day, 61°F · 35% highway
Winter lowEstimated
346mi
January, 38°F; Jan 1–7 at 38°F · lows near 27°F
Home chargingEstimated
$93/mo
8.0¢ a mile at 14.3¢/kWh. Gas Sierra: $300/mo
Oklahoma City's grid
0.87lb CO₂/kWh
SPP South (EPA eGRID): 14% dirtier than the US, 60% less CO₂ than gas
Oklahoma City, 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 · 40°F
8% below its 390-mile rating · coldest week 346 mi
357mi
Spring Mar–May · 60°F
3% below its rating
378mi
Summer Jun–Aug · 80°F
8% below its rating
357mi
Fall Sep–Nov · 61°FNow
4% below its rating
374mi
A Sierra EV's range through a Oklahoma City yearEstimated
Each month at Oklahoma City's 30-year normal temperature, 35% highway. No day of the year averages below freezing.
How far it goes from Oklahoma City, on real roadsEstimated
In October, from a full charge with 10% in reserve: about 172 mi out and back, 345 mi one way (January: 314 mi). Dots are DC fast chargers by network.
Fast charging around Oklahoma City
PlugLog's map of every public charger. Tesla-only Superchargers aren't counted.
- 105DC fast chargers within 25 mi
- 0.7 mito the nearest
- Tesla Supercharger119 in reach
- Francis Energy109
- EV Energy Group (FCN)104
- EVgo93
- ChargePoint70
Road trips in October, about, by road: Fayetteville (240 mi) and Dallas (237 mi) one way on a charge; Little Rock (370 mi) with one fast stop.
Questions Oklahoma City drivers ask
How far can a Sierra EV go in a Oklahoma City winter?
Oklahoma City's winters are mild: about 349 miles on a typical January day (38°F) and about 346 in the coldest week (around January 1, 38°F), estimated from real EV drives at those temperatures. That's within 11% of its 390-mile rating.
How much does it cost to charge a Sierra EV in Oklahoma City?
About $93 a month at home for 38 miles a day, at Oklahoma's average home electricity rate of 14.3¢/kWh: about 8.0¢ 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 Oklahoma City?
Not at 38 miles a day: a 120 V outlet adds only about 29 miles in 12 hours on an average day (26 in the coldest week). Plan on 240 V, which fills it from 10% in about 10 hours.
Is it greener to drive electric on Oklahoma City's grid?
Yes. Oklahoma City's grid (SPP South) is 14% dirtier than the US average, but a Sierra EV charged on it still makes 60% 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 Oklahoma City
Sources: temperatures, 30-year normals (NOAA 1991–2020) at Oklahoma City Will Rogers Airport, OK; home electricity, EIA (Oklahoma, 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.