Next 7 departures
- SatOct 3
ClearNo significant weather expected. Temperatures 46–83°F along the way.
Along the way
Checkpoint · arrival Weather · temperature Seattle7 AM PDT Mostly cloudy56°F Snoqualmie Pass7:45 AM PDT Partly sunny46°F Ellensburg8:45 AM PDT Partly sunny49°F Yakima9:15 AM PDT Mostly sunny58°F Hermiston10:45 AM PDT Sunny63°F Deadman Pass11:30 AM PDT Sunny65°F I-84 near Meacham11:45 AM PDT Sunny65°F Baker City12:45 PM PDT Sunny74°F Oregon–Idaho line3 PM MDT Sunny78°F Boise3:45 PM MDT Sunny83°F - SunOct 4
ClearNo significant weather expected. Temperatures 48–86°F along the way.
Along the way
Checkpoint · arrival Weather · temperature Seattle7 AM PDT Partly sunny53°F Snoqualmie Pass7:45 AM PDT Mostly sunny48°F Ellensburg8:45 AM PDT Sunny50°F Yakima9:15 AM PDT Sunny57°F Hermiston10:45 AM PDT Mostly sunny63°F Deadman Pass11:30 AM PDT Sunny66°F I-84 near Meacham11:45 AM PDT Sunny69°F Baker City12:45 PM PDT Sunny79°F Oregon–Idaho line3 PM MDT Sunny80°F Boise3:45 PM MDT Sunny86°F - MonOct 5
ClearNo significant weather expected. Temperatures 48–85°F along the way.
Along the way
Checkpoint · arrival Weather · temperature Seattle7 AM PDT Partly sunny54°F Snoqualmie Pass7:45 AM PDT Mostly sunny48°F Ellensburg8:45 AM PDT Mostly sunny53°F Yakima9:15 AM PDT Mostly sunny60°F Hermiston10:45 AM PDT Mostly sunny66°F Deadman Pass11:30 AM PDT Mostly sunny71°F I-84 near Meacham11:45 AM PDT Mostly sunny73°F Baker City12:45 PM PDT Mostly sunny81°F Oregon–Idaho line3 PM MDT Mostly sunny83°F Boise3:45 PM MDT Mostly sunny85°F - TueOct 6
ClearNo significant weather expected. Temperatures 43–85°F along the way.
Along the way
Checkpoint · arrival Weather · temperature Seattle7 AM PDT Mostly cloudy55°F Snoqualmie Pass7:45 AM PDT Partly sunny43°F Ellensburg8:45 AM PDT Partly sunny50°F Yakima9:15 AM PDT Mostly sunny58°F Hermiston10:45 AM PDT Mostly sunny64°F Deadman Pass11:30 AM PDT Mostly sunny66°F I-84 near Meacham11:45 AM PDT Mostly sunny68°F Baker City12:45 PM PDT Sunny77°F Oregon–Idaho line3 PM MDT Sunny82°F Boise3:45 PM MDT Sunny85°F - WedOct 7
ClearNo significant weather expected. Temperatures 44–84°F along the way.
Along the way
Checkpoint · arrival Weather · temperature Seattle7 AM PDT Mostly cloudy53°F Snoqualmie Pass7:45 AM PDT Partly sunny44°F Ellensburg8:45 AM PDT Partly sunny50°F Yakima9:15 AM PDT Mostly sunny58°F Hermiston10:45 AM PDT Mostly sunny64°F Deadman Pass11:30 AM PDT Mostly sunny66°F I-84 near Meacham11:45 AM PDT Sunny68°F Baker City12:45 PM PDT Sunny77°F Oregon–Idaho line3 PM MDT Sunny81°F Boise3:45 PM MDT Sunny84°F - ThuOct 8
ClearNo significant weather expected. Temperatures 47–84°F along the way.
Along the way
Checkpoint · arrival Weather · temperature Seattle7 AM PDT Partly sunny53°F Snoqualmie Pass7:45 AM PDT Mostly sunny47°F Ellensburg8:45 AM PDT Mostly sunny52°F Yakima9:15 AM PDT Mostly sunny60°F Hermiston10:45 AM PDT Sunny66°F Deadman Pass11:30 AM PDT Sunny67°F I-84 near Meacham11:45 AM PDT Sunny69°F Baker City12:45 PM PDT Sunny77°F Oregon–Idaho line3 PM MDT Sunny81°F Boise3:45 PM MDT Sunny84°F - FriOct 9
ClearNo significant weather expected. Temperatures 44–83°F along the way.
Along the way
Checkpoint · arrival Weather · temperature Seattle7 AM PDT Slight chance of light rain53°F Snoqualmie Pass7:45 AM PDT Slight chance of light rain44°F Ellensburg8:45 AM PDT Mostly sunny51°F Yakima9:15 AM PDT Mostly sunny59°F Hermiston10:45 AM PDT Mostly sunny65°F Deadman Pass11:30 AM PDT Mostly sunny65°F I-84 near Meacham11:45 AM PDT Mostly sunny66°F Baker City12:45 PM PDT Mostly sunny75°F Oregon–Idaho line3 PM MDT Mostly sunny80°F Boise3:45 PM MDT Mostly sunny83°F
The worst conditions expected at any checkpoint, timed to when you would reach it driving without stops. Levels use Road Travel’s driving-risk scale.
The route, stop by stop
Checkpoints in order, with driving time from Seattle (no stops) and elevation. The forecast above is timed to these.
- Seattle, WAStart 134 ftelevation
- Snoqualmie Pass, WAMountain pass · Mile 51 · 50 min 3,022 ftelevation
- Ellensburg, WAMile 107 · 1 h 42 min 1,544 ftelevation
- Yakima, WAMile 142 · 2 h 15 min 1,073 ftelevation
- Hermiston, ORMile 240 · 3 h 51 min 460 ftelevation
- Deadman Pass, ORMountain pass · Mile 288 · 4 h 37 min 3,609 ftelevation
- I-84 near Meacham, ORMile 300 · 4 h 48 min 4,198 ftelevation
- Baker City, ORMile 363 · 5 h 45 min 3,446 ftelevation
- Oregon–Idaho lineState line · Mile 436 · 6 h 53 min 2,165 ftelevation
- Boise, IDMile 491 · 7 h 44 min 2,707 ftelevation
Typical weather by month
Average daily highs and lows, and days with an inch or more of snow, at Seattle, I-84 near Meacham and Boise.
| Month | Seattle Sea-Tac Airport station · 370 ft | I-84 near Meacham Meacham station · 3,723 ft | Boise 2,814 ft | |||
|---|---|---|---|---|---|---|
| High / low °F | Snow days | High / low °F | Snow days | High / low °F | Snow days | |
| Jan | 48° / 38° | 0.4 | 37° / 21° | 6.8 | 39° / 26° | 1.8 |
| Feb | 50° / 38° | 0.7 | 40° / 22° | 5.5 | 46° / 29° | 1.2 |
| Mar | 54° / 40° | 0.1 | 46° / 24° | 6.2 | 56° / 35° | 0.5 |
| Apr | 59° / 43° | 0 | 52° / 29° | 2.9 | 62° / 40° | 0 |
| May | 66° / 49° | 0 | 61° / 34° | 0.3 | 72° / 48° | 0 |
| Jun | 71° / 53° | 0 | 68° / 39° | 0.1 | 81° / 54° | 0 |
| Jul | 77° / 57° | 0 | 79° / 42° | 0 | 93° / 62° | 0 |
| Aug | 78° / 57° | 0 | 79° / 40° | 0 | 91° / 61° | 0 |
| Sep | 72° / 54° | 0 | 70° / 34° | 0 | 80° / 53° | 0 |
| Oct | 61° / 47° | 0 | 57° / 29° | 0.7 | 65° / 42° | 0.1 |
| Nov | 52° / 41° | 0.1 | 43° / 26° | 4.0 | 49° / 32° | 0.8 |
| Dec | 47° / 37° | 0.6 | 35° / 20° | 7.5 | 39° / 25° | 1.7 |
NOAA NCEI U.S. Climate Normals, 1991–2020: SEATTLE TACOMA INTL AP (USW00024233, 370 ft); MEACHAM (USW00024152, 3,723 ft); BOISE AIR TERMINAL (USW00024131, 2,814 ft). Snow days are days with at least 1 inch of new snow. “—” means the station does not publish that normal.
Road conditions
Closures and chain rules change by the hour, so we link to the official reports for Washington, Oregon and Idaho rather than repeat them.
- For this passWSDOT Snoqualmie Pass report: cameras, restrictions, conditions
- Washington · WSDOTReal-time travel map
- Washington · winter rulesMountain pass reports and traction rules
- Oregon · ODOTTripCheck road conditions
- Oregon · winter rulesChain laws
- Idaho · ITD511 Idaho road conditions
Check the official National Weather Service forecast and each state's road report before you leave.
Get alerts timed to where you’ll be when you get there
Road Travel plans the drive from Seattle to Boise with the forecast at every stretch for the hour you’ll reach it, then warns you about weather ahead while you drive.
Questions about this drive
How long is the drive from Seattle to Boise?
491 miles, about 7½ hours of driving without stops, by way of I-90 and I-84. Fuel, food and rest stops add to that.
What is the highest point on the drive?
On I-84 near Meacham, at 4,198 ft. It comes at mile 300, about 4 h 48 min of driving after you leave Seattle.
Does it snow on I-84 near Meacham in November?
The nearest long-term NOAA station, Meacham (3,723 ft), averages 14.2 inches of snow in November, with about 4 days of 1 inch or more (1991–2020 normals).
How cold is Boise in January?
Boise averages a high of 39°F and a low of 26°F in January (1991–2020 normals).