Reality Check · Spokane, WA
2025 GMC Sierra EV in Spokane, WA
Winter range, charging cost and how far it goes, worked out for Spokane's weather, grid and prices.
Spokane's winters are cool rather than cold: on a typical January day (32°F) a Sierra EV gets an estimated 315 miles, 19% under its 390-mile rating, and about 308 in the coldest week (around December 21, when it averages 31°F). By April it's back to about 373. Charging at home at Washington's average rate (14.7¢/kWh) costs about $98 a month for 38 miles a day, about a third of the $385 a gas Sierra costs on Washington's gas. And Spokane's grid (WECC Northwest), 18% cleaner than the US average, makes it 70% 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
374mi
At Spokane's typical October day, 49°F · 35% highway
Winter lowEstimated
308mi
January, 32°F; Dec 21–27 at 31°F · lows near 25°F
Home chargingEstimated
$98/mo
8.4¢ a mile at 14.7¢/kWh. Gas Sierra: $385/mo
Spokane's grid
0.63lb CO₂/kWh
WECC Northwest (EPA eGRID): 18% cleaner than the US, 70% less CO₂ than gas
Spokane, 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 · 33°F
18% below its 390-mile rating · coldest week 308 mi
319mi
Spring Mar–May · 49°F
4% below its rating
374mi
Summer Jun–Aug · 68°F
5% below its rating
371mi
Fall Sep–Nov · 49°FNow
6% below its rating
368mi
A Sierra EV's range through a Spokane yearEstimated
Each month at Spokane's 30-year normal temperature, 35% highway. 41 days a year average below freezing.
How far it goes from Spokane, on real roadsEstimated
In October, from a full charge with 10% in reserve: about 168 mi out and back, 336 mi one way (January: 283 mi). Dots are DC fast chargers by network.
Fast charging around Spokane
PlugLog's map of every public charger. Tesla-only Superchargers aren't counted.
- 34DC fast chargers within 25 mi
- 0.3 mito the nearest
- FLO65 in reach
- ChargePoint47
- Tesla Supercharger46
- EV Connect31
- Electrify America19
Road trips in October, about, by road: Seattle (286 mi) one way on a charge; Boise (359 mi) with one fast stop.
Questions Spokane drivers ask
How far can a Sierra EV go in a Spokane winter?
About 315 miles on a typical January day (32°F) and about 308 in the coldest week of the year (around December 21, 31°F on average), estimated from real EV drives at those temperatures. That's 19–21% below its 390-mile rating, mostly from heating the cabin and the battery. Spokane averages 41 days a year below freezing.
How much does it cost to charge a Sierra EV in Spokane?
About $98 a month at home for 38 miles a day, at Washington's average home electricity rate of 14.7¢/kWh: about 8.4¢ a mile. A gas Sierra on Washington's average gas ($5.33 a gallon) costs about $385 a month for the same driving.
Can I charge a Sierra EV on a regular 120 V outlet in Spokane?
Not at 38 miles a day: a 120 V outlet adds only about 29 miles in 12 hours on an average day (23 in the coldest week). Plan on 240 V, which fills it from 10% in about 10 hours.
Is it greener to drive electric on Spokane's grid?
Yes, more than most places. Spokane's grid (WECC Northwest) is 18% cleaner than the US average, so a Sierra EV charged on it makes 70% 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 Spokane
Sources: temperatures, 30-year normals (NOAA 1991–2020) at Spokane Felts Fld, WA; home electricity, EIA (Washington, July 2026); gas, EIA weekly (Washington); 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.