Reality Check · Portland, OR
2024 Honda Prologue in Portland, OR
Winter range, charging cost and how far it goes, worked out for Portland's weather, grid and prices.
Winter barely touches range in Portland: at a typical January's 42°F, a Prologue gets an estimated 255 miles on a charge, within 7% of its 273-mile rating. Charging at home at Oregon's average rate (16.0¢/kWh) costs about $70 a month for 38 miles a day, about a third of the $341 an average standard SUV costs on the West Coast's gas. And Portland's grid (WECC Northwest), 18% cleaner than the US average, makes it 79% less CO₂ than gas.
Partly estimated. 1 of 5 temperature bands are from 83 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 273-mile rating. Each band switches to its own drives once it has 20 from 3 drivers.
October rangeEstimated
268mi
At Portland's typical October day, 56°F · 35% highway
Winter lowEstimated
254mi
January, 42°F · lows near 36°F
Home chargingEstimated
$70/mo
6.1¢ a mile at 16.0¢/kWh. Average standard SUV: $341/mo
Portland's grid
0.63lb CO₂/kWh
WECC Northwest (EPA eGRID): 18% cleaner than the US, 79% less CO₂ than gas
Portland, season by seasonEstimated
A Prologue's range on a full charge, averaged over each season's months (30-year normal temperatures), at 35% highway.
Winter Dec–Feb · 43°F
6% below its 273-mile rating · coldest week 254 mi
256mi
Spring Mar–May · 54°F
About its rating
266mi
Summer Jun–Aug · 68°F
About its rating
271mi
Fall Sep–Nov · 56°FNow
About its rating
266mi
A Prologue's range through a Portland yearEstimated
Each month at Portland's 30-year normal temperature, 35% highway. No day of the year averages below freezing.
How far it goes from Portland, on real roadsEstimated
In October, from a full charge with 10% in reserve: about 120 mi out and back, 241 mi one way (January: 230 mi). Dots are DC fast chargers by network.
Fast charging around Portland
PlugLog's map of every public charger. Tesla-only Superchargers aren't counted.
- 131DC fast chargers within 25 mi
- 0.7 mito the nearest
- ChargePoint131 in reach
- Tesla Supercharger85
- Electrify America79
- EVCS64
- EVgo56
Road trips in October, about, by road: Seattle (181 mi) one way on a charge; Spokane (360 mi) with one fast stop.
Questions Portland drivers ask
How far can a Prologue go in a Portland winter?
Portland's winters are mild: about 255 miles on a typical January day (42°F) and about the same in the coldest week (around December 22, 41°F), estimated from real EV drives at those temperatures. That's within 7% of its 273-mile rating.
How much does it cost to charge a Prologue in Portland?
About $70 a month at home for 38 miles a day, at Oregon's average home electricity rate of 16.0¢/kWh: about 6.1¢ a mile. An average standard SUV on the West Coast's average gas ($5.01 a gallon) costs about $341 a month for the same driving.
Can I charge a Prologue on a regular 120 V outlet in Portland?
At 38 miles a day, yes, all year: a 120 V outlet adds about 39 miles in 12 hours even in Portland's coldest week, and about 41 on an average day.
Is it greener to drive electric on Portland's grid?
Yes, more than most places. Portland's grid (WECC Northwest) is 18% cleaner than the US average, so a Prologue charged on it makes 79% less CO₂ than an average standard SUV.
Check it for your own address
Your street, your daily miles, any temperature on the knob.
Prologue Reality Check near Portland
Sources: temperatures, 30-year normals (NOAA 1991–2020) at Portland International Airport, OR; home electricity, EIA (Oregon, July 2026); gas, EIA weekly (the West Coast); 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.