Reality Check · San Jose, CA
2026 GMC Sierra EV AT4 / Denali in San Jose, CA
Winter range, charging cost and how far it goes, worked out for San Jose's weather, grid and prices.
Winter barely touches range in San Jose: at a typical January's 51°F, a Sierra EV AT4 / Denali gets an estimated 395 miles on a charge, within 4% of its 410-mile rating. Charging at home at California's average rate (33.6¢/kWh) costs about $193 a month for 38 miles a day, against $423 for a gas Sierra on California's gas. And San Jose's grid (WECC California), 44% cleaner than the US average, makes it 82% 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
414mi
At San Jose's typical October day, 64°F · 35% highway
Winter lowEstimated
395mi
January, 51°F · lows near 41°F
Home chargingEstimated
$193/mo
16.7¢ a mile at 33.6¢/kWh. Gas Sierra: $423/mo
San Jose's grid
0.43lb CO₂/kWh
WECC California (EPA eGRID): 44% cleaner than the US, 82% less CO₂ than gas
San Jose, 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 · 52°F
3% below its 410-mile rating · coldest week 395 mi
396mi
Spring Mar–May · 59°F
About its rating
407mi
Summer Jun–Aug · 69°F
About its rating
420mi
Fall Sep–Nov · 63°FNow
About its rating
412mi
A Sierra EV AT4 / Denali's range through a San Jose yearEstimated
Each month at San Jose's 30-year normal temperature, 35% highway. No day of the year averages below freezing.
How far it goes from San Jose, on real roadsEstimated
In October, from a full charge with 10% in reserve: about 186 mi out and back, 372 mi one way (January: 356 mi). Dots are DC fast chargers by network.
Fast charging around San Jose
PlugLog's map of every public charger. Tesla-only Superchargers aren't counted.
- 265DC fast chargers within 25 mi
- 0.6 mito the nearest
- EVgo382 in reach
- Tesla Supercharger277
- ChargePoint246
- Electrify America168
- EVCS81
Road trips in October, about, by road: Los Angeles (370 mi) and Oxnard (324 mi) one way on a charge; Riverside (425 mi) with one fast stop.
Questions San Jose drivers ask
How far can a Sierra EV AT4 / Denali go in a San Jose winter?
San Jose's winters are mild: about 395 miles on a typical January day (51°F) and about the same in the coldest week (around December 19, 50°F), estimated from real EV drives at those temperatures. That's within 4% of its 410-mile rating.
How much does it cost to charge a Sierra EV AT4 / Denali in San Jose?
About $193 a month at home for 38 miles a day, at California's average home electricity rate of 33.6¢/kWh: about 16.7¢ a mile. A gas Sierra on California's average gas ($6.03 a gallon) costs about $423 a month for the same driving.
Can I charge a Sierra EV AT4 / Denali on a regular 120 V outlet in San Jose?
Not at 38 miles a day: a 120 V outlet adds only about 31 miles in 12 hours on an average day (30 in the coldest week). Plan on 240 V, which fills it from 10% in about 17 hours.
Is it greener to drive electric on San Jose's grid?
Yes, more than most places. San Jose's grid (WECC California) is 44% cleaner than the US average, so a Sierra EV AT4 / Denali charged on it makes 82% 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 San Jose
Sources: temperatures, 30-year normals (NOAA 1991–2020) at San Jose, CA; home electricity, EIA (California, July 2026); gas, EIA weekly (California); 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.