Reality Check · Spokane, WA
2026 Chevrolet Silverado EV Trail Boss 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 Silverado EV Trail Boss gets an estimated 387 miles, 21% under its 493-mile rating, and about 378 in the coldest week (around December 21, when it averages 31°F). By March it's back to about 457. Charging at home at Washington's average rate (14.6¢/kWh) costs about $95 a month for 38 miles a day, about a third of the $354 a gas Silverado costs on Washington's gas. And Spokane's grid (WECC Northwest), 18% cleaner than the US average, makes it 69% less CO₂ than gas.
Partly estimated. 2 of 5 temperature bands are from 117 real drives of this model; the rest come from 2,178 real drives in EVs at each temperature (and Recurrent's winter study below freezing), applied to its 493-mile rating. Each band switches to its own drives once it has 20 from 3 drivers.
October rangeEstimated
459mi
At Spokane's typical October day, 49°F · 35% highway
Winter lowEstimated
378mi
January, 32°F; Dec 21–27 at 31°F · lows near 25°F
Home chargingEstimated
$95/mo
8.2¢ a mile at 14.6¢/kWh. Gas Silverado: $354/mo
Spokane's grid
0.63lb CO₂/kWh
WECC Northwest (EPA eGRID): 18% cleaner than the US, 69% less CO₂ than gas
Spokane, season by seasonEstimated
A Silverado EV Trail Boss's range on a full charge, averaged over each season's months (30-year normal temperatures), at 35% highway.
Winter Dec–Feb · 33°F
20% below its 493-mile rating · coldest week 378 mi
393mi
Spring Mar–May · 49°F
7% below its rating
459mi
Summer Jun–Aug · 68°F
11% below its rating
440mi
Fall Sep–Nov · 49°FNow
9% below its rating
450mi
A Silverado EV Trail Boss'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 207 mi out and back, 413 mi one way (January: 349 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
- ChargePoint113 in reach
- Tesla Supercharger96
- FLO84
- Electrify America61
- EVgo42
Road trips in October, about, by road: Portland (360 mi) and Boise (359 mi) one way on a charge; Ogden (650 mi) with one fast stop.
Questions Spokane drivers ask
How far can a Silverado EV Trail Boss go in a Spokane winter?
About 387 miles on a typical January day (32°F) and about 378 in the coldest week of the year (around December 21, 31°F on average), estimated from real EV drives at those temperatures. That's 21–23% below its 493-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 Silverado EV Trail Boss in Spokane?
About $95 a month at home for 38 miles a day, at Washington's average home electricity rate of 14.6¢/kWh: about 8.2¢ a mile. A gas Silverado on Washington's average gas ($5.20 a gallon) costs about $354 a month for the same driving.
Can I charge a Silverado EV Trail Boss 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 (24 in the coldest week). Plan on 240 V, which fills it from 10% in about 12 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 Silverado EV Trail Boss charged on it makes 69% less CO₂ than a gas Silverado.
Check it for your own address
Your street, your daily miles, any temperature on the knob.
Silverado EV Trail Boss Reality Check near Spokane
Sources: temperatures, 30-year normals (NOAA 1991–2020) at Spokane Felts Fld, WA; home electricity, EIA (Washington, August 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 29, 2026.