Summer Road Trips in Idaho

Routes

Avg Distance

588 mi

Avg Drive

10h 3m

Destinations

Methodology

Routes filtered by drive score and typical seasonal conditions. Historical hazard counts pulled from FEMA disaster declarations and USGS seismic feeds; monthly weather context from NOAA 1991–2020 normals.

Data sources: OSRM • NOAA NCEI climate normals • FEMA OpenFEMA • USGS Earthquake Hazards • EIA weekly fuel survey

Last reviewed

Oct 22, 2026

0 seconds ago

Curated by the US Trip Planner editorial team.
Not sponsored; no affiliate links on this page.

Summer in Idaho means maximizing daylight for expansive drives. With 30 routes averaging 581 miles and nearly 10 hours, you'll find plenty of ground to cover across varied terrain. Max elevations can reach over 6,000 feet, offering cooler air on some of the longer hauls.

Fuel snapshot for this state

Regular

$4.61/gal

Diesel: $6.28/gal

Typical trip cost

$99–$114

One-way, ~588 mi avg @ 25.4 MPG

CO₂ per trip

~206 kg

ICE vehicle, one-way average

Source: US Energy Information Administration • week of 2026-10-19

Climate through the year: Idaho

Idaho peaks at around 93°F in Jul and cools to 39°F / 26°F in Jan. Wettest month is Dec at ~1.5 in of rain. Table highlights Summer months.

Month	High °F	Low °F	Rain in	Snow in
Jan	39	26	1.4	5.3
Feb	46	29	1	3.3
Mar	56	35	1.3	1.2
Apr	62	40	1.2	0.1
May	72	48	1.5	—
Jun peak	81	54	0.8	—
Jul peak	93	62	0.2	—
Aug peak	91	61	0.2	—
Sep	80	53	0.4	—
Oct	65	42	0.8	0.1
Nov	49	32	1.2	2
Dec	39	25	1.5	5.6

Source: NOAA NCEI Monthly Climate Normals, 1991–2020 reference period. Sampled at the major-airport station for ID — microclimates along specific routes can vary significantly.

Planning Tips

Carry extra water — summer heat in the car and at rest stops dehydrates faster than you think.
Start drives early or late to avoid peak afternoon heat, especially through desert or plains stretches.
Check your tire pressure before long summer drives — hot pavement increases blowout risk with underinflated tires.

Frequently Asked Questions

We've identified 30 routes in Idaho that work well for summer travel, based on drive quality, typical weather conditions, and distance (averaging 588 miles).

Current regular gas averages $4.61/gallon in Idaho (week of 2026-10-19). Diesel: $6.28/gallon. A typical one-way trip on these routes costs between $99 and $114. Source: US Energy Information Administration.

Across Jun, Jul, Aug, Idaho typically sees daytime highs in the 81–93°F range with about 0.4 in of rain per month on average. Based on NOAA 1991–2020 monthly climate normals.

Drive times and distances come from OSRM routing over real OpenStreetMap road networks. Fuel costs use weekly US Energy Information Administration state-level gas prices. Drive scores factor in elevation profile, road variety, and terrain. EV charging data is sourced from NREL. Climate normals come from NOAA NCEI (1991–2020 reference period). Hazard data comes from FEMA and USGS public feeds.

Yes. Click any route to see its full trip page with turn-by-turn directions, fuel cost estimates, elevation profile, stop suggestions, weather conditions, and more.

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