Your RV Weather Road Trip Forecast for Tuesday August 26, 2025

The northwest will be seeing hot conditions. Cities like Seattle and Portland are in Heat Advisories, and the western deserts of Washington are under Extreme Heat Warnings. Heat alerts are active through Wednesday evening. Temperatures of over 90°F to over 100°F can be expected.
A strong surge of monsoonal moisture will increase the flood threat and thunderstorm intensity throughout the west. Areas extending from the Sierras, Intermountain West, Rockies, The Central Plains, to the Ozarks are in the threat of heavy downpours and flooding events through Wednesday. Areas of 1″-4″+ of rain are expected across most of the region, especially in ID, northern UT, southeast MT, western and southern WY, CO, northeast NM, KS, OK, southwest MO, and northern AR.
A taste of fall for the eastern half of the country as cooler weather will stick around through this week. Patchy frost is possible for the far northern regions of the Upper Midwest and New England and patchy fog is possible throughout those regions.

From the RV Weather Mobile Command Center in State College PA:

These are the most significant weather impacts to RV travel over the next two to three days. I do not list every area of rain, showers, or breezy winds. It would be exhausting.

Looking for real-time road conditions? Here’s a link, courtesy of the Federal Highway Administration, to all the individual State 511 websites.

Looking for wildfire smoke or hail forecasts? Click here, then scroll down to “High Resolution, Hourly Animations”. Or scroll down to the graphics below.

RV Weather’s Weather Hub has a complete collection of always updating weather graphics and forecasts.

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Weather Impacts Pacific Time Zone:

— Portions of western WA: A Heat Advisory is in effect through this evening. Temperatures could reach into the upper 80s and low 90s. I-5, I-90, US-2, US-12, US-101, W-3, WA-167 impacted.

— Eastern WA; north-central OR: A combination of Heat Advisories and Extreme Heat Warnings are in effect through Wednesday evening. Temperatures ranging from 90 – 100°F are expected. I-82, I-84, I-90, US-2, US-12, US-97, US-195, US-395 impacted.

— Central and southern OR; northern CA: A Red Flag (Fire Weather) Warning is in effect this afternoon and evening. Scattered thunderstorms over and near dry vegetation could create lightning that may spark fires and gusty winds up to 35-50 mph can spread the fires up to 25 miles from the storm. These thunderstorms will likely drop rain. I-5, US-20, US-97, US-299, US-397, OR-62, CA-299 impacted.

— Southeast OR; northeast and central NV: A Flood Watch is in effect through Wednesday evening. Rounds of scattered showers and thunderstorms could produce locally heavy downpours that may lead to flash flooding. Burn scars are particularly prone to mudslides. 0.5″-1.5″+ of rainfall is expected. I-80, I-84, US-6, US-20, US-26, US-50, US-93, US-95, US-395 impacted.

— Parts of northeastern CA and west-central NV: A Flood Watch is in effect this afternoon and evening. Scattered showers and thunderstorms this afternoon may lead to excessive runoff and flooding, especially in mountainous regions. 1″-3″+ of rainfall is expected with localized areas up to 5″ possible. Rain may continue through midweek. I-80, US-6, US-50, US-95, US-395, CA-299 impacted.

— Pacific coast of WA, OR, and northern CA: Fog may develop tomorrow morning. Visibilities under 1/4 mile at times may lead to difficult travel at times. US-101 impacted.

Weather Impacts Mountain Time Zone:

— Parts of northwestern ID: A combination of Heat Advisories and Extreme Heat Warnings are in effect through Wednesday evening. Temperatures of 90-102°F are expected. I-90, US-12, US-95 impacted.

— Southwestern ID: A Flood Watch is in effect this afternoon through Wednesday evening. Rounds of scattered showers and thunderstorms could produce locally heavy downpours that may lead to flash flooding. Burn scars are particularly prone to mudslides. 0.5″-2.5″+ of rainfall is expected. I-84, US-20, US-26, US-93, US-95 impacted.

— Portions of southwest MT: A Flood Watch is in effect Wednesday afternoon and evening. Scattered showers and thunderstorms may drop locally heavy downpours at rates of 1″ – 2″ per hour which may lead to excessive runoff and flash flooding. Burn scars may have mudslides. 0.5″-2.5″ of rainfall is expected. I-15, I-90, US-20, US-191, US-287 impacted.

— Southeastern UT; southwestern and western CO: A Flood Watch is in effect through this evening. Scattered showers and thunderstorms today may produce locally heavy downpours in which flooding and flash flooding events look possible. Rainfall totals of 0.5″-2″+ are expected. This includes parts of Canyonlands National Park in UT. I-70, US-50, US-160, US-191, US-491, US-550 impacted.

— Portions of north-central AZ: A Flood Watch is in effect through Tuesday evening. Showers and thunderstorms are expected in the afternoon and evenings and may lead to locally heavy downpours and flash flooding. Rainfall totals of 0.5″-1″+ are expected. This includes Grand Canyon National Park. US-89, AZ-64 impacted.

— Portions of central NM: A Flood Watch is in effect for the South Central Mountains this afternoon and evening. Scattered thunderstorms today capable of heavy rainfall will return to the burn scars surrounding the village of Ruidoso this afternoon. Excessive runoff on the burn scars may lead to flash flooding. 0.5″-1″+ of rainfall is expected. US-70, US-380 impacted.

— Northern UT; northeastern NV; southern ID; western WY; southwestern MT: Heavy rain is expected today and tomorrow. Thunderstorms could produce heavy downpours which may lead to flooding, especially in mountainous regions. 0.5″-2.5″+ of rainfall is expected. I-15, I-80, I-84, I-86, US-20, US-26, US-30, US-89, US-93, US-191 impacted.

— Southeastern AZ: Scattered showers and thunderstorms may produce heavy rainfall and lead to isolated flood/flash flood events today. Isolated rainfall totals of up to and exceeding 1″ are possible. I-10, I-19, US-60, US-70, US-191, AZ-77, AZ-90 impacted.

— Southwestern through eastern CO; northern NM: Scattered showers and thunderstorms today and tomorrow may produce heavy downpours and lead to isolated to scattered flood/flash flood events today and tomorrow. 0.5″-3″+ of rainfall is expected. I-25, I-70, I-76, US-24, US-40, US-50, US-56, US-64, US-84, US-160, US-285, US-385, US-550 impacted.

Weather Impacts Central Time Zone:

— Western and central OK: A Flood Watch is in effect through midday today. Showers and thunderstorms this morning may produce heavy downpours and additional rainfall totals of up to 1″+. Flooding is occurring throughout the Flood Watch area. I-35, I-40, I-44, US-60, US-62, US-64, US-81, US-177, US-183, US-270, US-283 impacted.

— Much of KS; northeastern OK; southwestern MO; northwestern AR: Showers and thunderstorms may produce heavy rainfall on Wednesday. Scattered flood/flash flood events are expected tomorrow. 1″-4″+ of rainfall is expected. I-35, I-44, I-49, I-70, US-40, US-50, US-54, US-56, US-59, US-60, US-62, US-64, US-69, US-75, US-77, US-81, US-83, US-160, US-183, US-281, US-412, Muskogee Turnpike impacted.

— Southwestern WI: Fog may develop tomorrow morning. Low visibilities under 1/4 mile at times could lead to difficult travel. US-14, US-18, US-61, US-151 impacted.

Weather Impacts Eastern Time Zone:

– Much of WV; southeast OH; northwest VA: Fog may develop tomorrow morning. Visibilities under 1/4 mile at times may lead to difficult travel. I-64, I-77, I-79, US-19, US-33, US-35, US-50, US-119, US-220 impacted.

— Much of VT; much of NH; western ME: Fog may develop tomorrow morning. Low visibilities possibly under 1/4 mile may lead to difficult travel. I-89, I-91, I-93, US-2, US-3, US-4, US-5, US-7, US-302, VT-11, VT-15, NH-16, ME-26, NH-26, VT-100, VT-103 impacted.

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