Reality Check · Allentown, PA
2025 GMC Sierra EV in Allentown, PA
Winter range, charging cost and how far it goes, worked out for Allentown's weather, grid and prices.
Allentown's winters are cool rather than cold: on a typical January day (30°F) a Sierra EV gets an estimated 306 miles, 22% under its 390-mile rating, and about 303 in the coldest week (around January 20, when it averages 30°F). By April it's back to about 377. Charging at home at Pennsylvania's average rate (21.7¢/kWh) costs about $144 a month for 38 miles a day, against $312 for a gas Sierra on the Central Atlantic's gas. And Allentown's grid (RFC East), 22% cleaner than the US average, makes it 72% 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
381mi
At Allentown's typical October day, 55°F · 35% highway
Winter lowEstimated
303mi
January, 30°F; Jan 20–26 at 30°F · lows near 21°F
Home chargingEstimated
$144/mo
12.5¢ a mile at 21.7¢/kWh. Gas Sierra: $312/mo
Allentown's grid
0.60lb CO₂/kWh
RFC East (EPA eGRID): 22% cleaner than the US, 72% less CO₂ than gas
Allentown, 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 303 mi
319mi
Spring Mar–May · 52°F
4% below its rating
374mi
Summer Jun–Aug · 73°F
7% below its rating
363mi
Fall Sep–Nov · 55°FNow
4% below its rating
374mi
A Sierra EV's range through a Allentown yearEstimated
Each month at Allentown's 30-year normal temperature, 35% highway. 46 days a year average below freezing.
How far it goes from Allentown, on real roadsEstimated
In October, from a full charge with 10% in reserve: about 171 mi out and back, 343 mi one way (January: 275 mi). Dots are DC fast chargers by network.
Fast charging around Allentown
PlugLog's map of every public charger. Tesla-only Superchargers aren't counted.
- 34DC fast chargers within 25 mi
- 2.3 mito the nearest
- Tesla Supercharger288 in reach
- ChargePoint288
- EVgo214
- Electrify America132
- Blink103
Road trips in October, about, by road: Rochester (262 mi) and Syracuse (216 mi) one way on a charge.
Questions Allentown drivers ask
How far can a Sierra EV go in a Allentown winter?
About 306 miles on a typical January day (30°F) and about 303 in the coldest week of the year (around January 20, 30°F on average), estimated from real EV drives at those temperatures. That's 22% below its 390-mile rating, mostly from heating the cabin and the battery. Allentown averages 46 days a year below freezing.
How much does it cost to charge a Sierra EV in Allentown?
About $144 a month at home for 38 miles a day, at Pennsylvania's average home electricity rate of 21.7¢/kWh: about 12.5¢ a mile. A gas Sierra on the Central Atlantic's average gas ($4.31 a gallon) costs about $312 a month for the same driving.
Can I charge a Sierra EV on a regular 120 V outlet in Allentown?
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 Allentown's grid?
Yes, more than most places. Allentown's grid (RFC East) is 22% cleaner than the US average, so a Sierra EV charged on it makes 72% 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 Allentown
Sources: temperatures, 30-year normals (NOAA 1991–2020) at Allentown International Airport, PA; home electricity, EIA (Pennsylvania, July 2026); gas, EIA weekly (the Central Atlantic); 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.