Reality Check · San Francisco, CA
2026 GMC Sierra EV AT4 / Denali in San Francisco, CA
Winter range, charging cost and how far it goes, worked out for San Francisco's weather, grid and prices.
Winter barely touches range in San Francisco: at a typical January's 52°F, a Sierra EV AT4 / Denali gets an estimated 397 miles on a charge, within 3% of its 410-mile rating. Charging at home at California's average rate (33.6¢/kWh) costs about $195 a month for 38 miles a day, against $421 for a gas Sierra on San Francisco's gas. And San Francisco'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
411mi
At San Francisco's typical October day, 62°F · 35% highway
Winter lowEstimated
397mi
January, 52°F · lows near 46°F
Home chargingEstimated
$195/mo
16.9¢ a mile at 33.6¢/kWh. Gas Sierra: $421/mo
San Francisco's grid
0.43lb CO₂/kWh
WECC California (EPA eGRID): 44% cleaner than the US, 82% less CO₂ than gas
San Francisco, 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 · 53°F
About its rating · coldest week 397 mi
398mi
Spring Mar–May · 57°F
About its rating
403mi
Summer Jun–Aug · 61°F
About its rating
409mi
Fall Sep–Nov · 61°FNow
About its rating
409mi
A Sierra EV AT4 / Denali's range through a San Francisco yearEstimated
Each month at San Francisco's 30-year normal temperature, 35% highway. No day of the year averages below freezing.
How far it goes from San Francisco, on real roadsEstimated
In October, from a full charge with 10% in reserve: about 185 mi out and back, 370 mi one way (January: 357 mi). Dots are DC fast chargers by network.
Fast charging around San Francisco
PlugLog's map of every public charger. Tesla-only Superchargers aren't counted.
- 291DC fast chargers within 25 mi
- 0.2 mito the nearest
- EVgo379 in reach
- Tesla Supercharger277
- ChargePoint250
- Electrify America162
- EVCS77
Road trips in October, about, by road: Bakersfield (314 mi) and Fresno (200 mi) one way on a charge; Oxnard (382 mi) with one fast stop.
Questions San Francisco drivers ask
How far can a Sierra EV AT4 / Denali go in a San Francisco winter?
San Francisco's winters are mild: about 397 miles on a typical January day (52°F) and about the same in the coldest week (around December 28, 52°F), estimated from real EV drives at those temperatures. That's within 3% of its 410-mile rating.
How much does it cost to charge a Sierra EV AT4 / Denali in San Francisco?
About $195 a month at home for 38 miles a day, at California's average home electricity rate of 33.6¢/kWh: about 16.9¢ a mile. A gas Sierra on San Francisco's average gas ($6.00 a gallon) costs about $421 a month for the same driving.
Can I charge a Sierra EV AT4 / Denali on a regular 120 V outlet in San Francisco?
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 Francisco's grid?
Yes, more than most places. San Francisco'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 Francisco
Sources: temperatures, 30-year normals (NOAA 1991–2020) at San Francisco Dwtn, CA; home electricity, EIA (California, July 2026); gas, EIA weekly (San Francisco); 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.