RV Weather Road Trip Forecast for Saturday July 4, 2026

Planning to travel this week? Here’s what could impact your route.

Dangerous heat affects much of the East today, including the I-95 corridor from North Carolina to Maine.
Severe thunderstorms today could disrupt major travel corridors from the Plains to the Mid-Atlantic.
Flash flooding risk continues from Iowa to the Mid-Atlantic, with the most serious immediate flooding in central Iowa.
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Significant travel weather for the next 2-3 days.

Weather Impacts Pacific

— Eastern Washington and the Lower Columbia Basin of Oregon: Red Flag Warnings begin around midday and continue through late evening, with west winds 10 to 20 mph and gusts up to 30 to 35 mph. I-82, I-84, I-90, US-2, US-12, US-97, US-395 impacted.

— Southeast California and southwest Arizona deserts: Extreme Heat Watch Tuesday through Thursday, with afternoon temperatures 108 to 117 degrees. I-8, I-10, US-60, US-95, CA-62, CA-78, CA-86 potentially impacted.

Weather Impacts Mountain:

— Eastern Wyoming and eastern Colorado: Severe thunderstorms are possible this afternoon and evening, with scattered severe storms capable of damaging wind gusts and hail. I-25, I-70, I-76, I-80, I-90, US-6, US-14, US-16, US-18, US-20, US-24, US-26, US-30, US-34, US-36, US-40, US-50, US-56, US-85, US-160, US-212, US-285, US-287, US-385, US-400 potentially impacted.

— South-central Arizona deserts and the Phoenix metro region: Extreme Heat Watch Tuesday through Thursday, with afternoon temperatures 108 to 116 degrees. I-8, I-10, I-17, US-60, US-70 potentially impacted.

— Eastern New Mexico: Isolated severe thunderstorms are possible Sunday afternoon and evening, mainly with damaging wind gusts in thunderstorm clusters. I-40, US-54, US-56, US-60, US-62, US-70, US-82, US-84, US-87, US-285, US-380 potentially impacted.

Weather Impacts Central

— Central Iowa: FLASH FLOOD WARNINGS continue through the morning, with 2 to 6 inches of rain already fallen and another 1 to 4 inches possible. I-35, I-80, US-69, US-71 and surrounding highways likely impacted.

— Northern North Dakota: Isolated severe thunderstorms are possible Sunday afternoon and evening, with hail and damaging wind gusts possible. US-2, US-52, US-83, US-85, US-281 potentially impacted.

— South-central and eastern North Dakota, northern South Dakota, and northern Minnesota: Strong thunderstorm development is possible Monday into Monday night, with at least some risk for severe hail and wind gusts. I-29, I-94, US-2, US-10, US-12, US-14, US-52, US-53, US-59, US-71, US-81, US-83, US-169, US-212, US-281 potentially impacted.

— Southern and eastern South Dakota, Nebraska, Kansas, northern and western Oklahoma, Texas Panhandle, Minnesota, western Iowa, Missouri, and Illinois: Severe thunderstorms are possible this afternoon and evening, with damaging wind gusts, and large hail the primary hazards. The greatest risk of severe weather will be across western Nebraska, most of Kansas, northern Oklahoma, and the Texas Panhandle. I-24, I-27, I-29, I-35, I-35E, I-35W, I-39, I-40, I-44, I-49, I-55, I-57, I-64, I-70, I-72, I-74, I-76, I-80, I-88, I-90, I-94 potentially impacted.

—Northwest Texas including the western Texas Panhandle: Isolated severe thunderstorms are possible Sunday afternoon and evening. Damaging wind gusts are the primary hazard. I-27, I-40, US-54, US-60, US-62, US-70, US-82, US-84, US-87, US-287, US-380, US-385 potentially impacted.

— Southeastern Kansas and northeastern Oklahoma: Flash flooding is possible today and tonight. I-35, I-40, I-44, I-70, US-50, US-54, US-56, US-59, US-60, US-62, US-64, US-69, US-75, US-77, US-400, US-412 potentially impacted.

— Eastern Kansas, Missouri, and central and southern Illinois: Extreme Heat Warnings and Heat Advisories today, with heat index values generally 100 to 110 degrees. I-29, I-35, I-44, I-49, I-55, I-64, I-70, US-50, US-54, US-56, US-59, US-63, US-65, US-67 impacted.

— Oklahoma, Arkansas, the Texas/Oklahoma Panhandles, and southeast Texas: Heat Advisories today, with heat index values between 104 and 109 degrees F.

— The Mid-South, lower Mississippi Valley, much of Alabama, and Tennessee: Heat Advisories today, with heat index values mostly 100 to 109 degrees.

Weather Impacts Eastern:

— Eastern U.S. from the Ohio Valley and Appalachians into the Mid-Atlantic, Northeast, Carolinas, and Georgia: Extreme Heat Warnings and Advisories continue today, with heat index values generally 95 to 110 degrees, and up to 115 in parts of northern and central Virginia, Maryland, the Washington/Baltimore corridor, the Delmarva region, eastern Virginia, and northern North Carolina. I-95 corridor between North Carolina and Portland Maine, as well as most highways in the East between between I-80 and I-20 will be impacted.

— Indiana, Ohio, northeast Kentucky, West Virginia, Pennsylvania and adjacent southern New York, New Jersey, Delaware, Maryland, District of Columbia, Virginia and adjacent northern North Carolina: Severe thunderstorms are possible this afternoon and evening, with more organized severe storms capable of widespread damaging wind. The greatest risk of severe weather will be across western Delaware, central and eastern Maryland, District of Columbia, and northeastern Virginia. I-26, I-40, I-57, I-64, I-65, I-66, I-68, I-69, I-70, I-71, I-73, I-74, I-75, I-76, I-77, I-78, I-79, I-80, I-81, I-83, I-84, I-85, I-86, I-87, I-88, I-90, I-91, I-94, I-95, I-97, I-99 potentially impacted.

— The Mid-Atlantic into the central Appalachians: Severe thunderstorms are possible Sunday afternoon and evening, with scattered storms capable of damaging wind gusts. The greatest risk of severe weather will be across south-central and southeast Pennsylvania, southern New Jersey, Delaware, Maryland, northeastern West Virginia, District of Columbia, and northern, central and eastern Virginia. I-64, I-66, I-68, I-70, I-74, I-76, I-77, I-78, I-79, I-80, I-81, I-83, I-85, I-95, I-97, I-99 potentially impacted.

— Much of Pennsylvania, New Jersey, Maryland, District of Columbia, central and northern West Virginia, and north-central to northeast Virginia: Flash flooding is possible Sunday into early Tuesday, with periods of heavy rainfall, training thunderstorms, and increasing heavy-convection risk along the Washington DC-Baltimore-Philadelphia corridor. I-64, I-66, I-68, I-70, I-76, I-78, I-79, I-80, I-81, I-83, I-84, I-87, I-95, I-97, I-99 potentially impacted.

— Southeast Florida: Heat Advisory continues today for the Miami-Dade, Broward, and Palm Beach metro and coastal areas, with heat index values generally 105 to 110 degrees.

Outlook Monday July 6th through Friday July 10th:

— Monday, July 6: from Tennessee and northern Alabama into the central Appalachians and Mid-Atlantic: Heat concerns may create challenging conditions. Major highways potentially affected include I-20, I-40, I-64, I-65, I-74, I-75, I-85, I-95.

— Monday, July 6: Southern New England, central and southern New York, central and eastern Pennsylvania, New Jersey, much of Maryland, northern Delaware, District of Columbia and northern Virginia.: Heavy rain may create localized flooding and reduced visibility. Major highways potentially affected include I-70, I-76, I-80, I-81, I-84, I-87, I-90, I-91, I-95.

— Monday, July 6 through Friday, July 10: southern and southeastern Alabama and much of Florida, Georgia, South Carolina, and North Carolina: Heat concerns may create challenging conditions. Major highways potentially affected include I-4, I-10, I-20, I-40, I-74, I-75, I-85, I-87, I-95.

— Wednesday, July 8 through Friday, July 10: from Texas and Oklahoma into the Ozarks, Lower Mississippi Valley and central Gulf Coast: Heat concerns may create challenging conditions. Major highways potentially affected include I-10, I-20, I-30, I-35, I-40, I-55, I-65.

— Wednesday, July 8 through Friday, July 10: much of southern Florida: Heat concerns may create challenging conditions. Major highways potentially affected include I-75, I-95.

Extended Outlook July 11th through July 17th:

— Saturday, July 11 through Friday, July 17: from the West and northern Plains into the central Plains, Lower Mississippi Valley, and Southeast: Extreme heat may develop, which could create challenging travel conditions, especially near higher terrain and coming up over passes to include Snoqualmie Pass, Donner Pass, Cajon Pass, and San Gorgonio Pass. Major highways potentially affected include I-4, I-5, I-8, I-10, I-15, I-20, I-25, I-29, I-30, I-35, I-40, I-55, I-65, I-70, I-74, I-75, I-76, I-80, I-84, I-87, I-90, I-94, I-95.

— Sunday, July 12 through Wednesday, July 15: from Washington and California across the Interior West into Texas, Oklahoma, Arkansas, and Louisiana: Extreme heat is likely, which may create challenging travel conditions, especially near higher terrain and passes including Snoqualmie Pass, Deadman Pass, Donner Pass, and Cajon Pass. Major highways potentially affected include I-8, I-10, I-15, I-20, I-25, I-30, I-35, I-40, I-70, I-76, I-80, I-84, I-90.

Forecast Confidence for the Extended Outlook:

Confidence is generally above average. There is good agreement on the large-scale pattern early in the outlook, with heat becoming the main concern across the South and Southeast, then expanding later as ridging builds across the West and central U.S.

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

Your route’s weather may vary from the general forecast — check your exact trip

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