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

• Heat affects travel from Nebraska and Kansas through Oklahoma, Texas, Arkansas, Louisiana, and Mississippi into this coming weekend, with heat indices of 105 to 113 degrees.
• Scattered severe storms and flash-flooding risks may disrupt travel across Iowa and eastern Nebraska this afternoon and evening, with damaging wind, large hail, and a tornado possible.
• Prolonged heat affects much of California and western Arizona through Friday, with temperatures reaching 116 degrees in Death Valley and the Colorado River Valley Thursday.

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

This free daily forecast is separate from a paid RV Weather SureRoute subscription. SureRoute checks the weather along your specific route and travel timing.

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Significant travel weather for the next 2-3 days.

Weather Impacts Pacific:

— Southern Nevada and parts of southeastern and southern California: Extreme Heat Warnings cover the Las Vegas Valley and California deserts today through Friday, with afternoon temperatures of 102 to 112 degrees. Inland valleys and coastal portions of Southern California face highs from the lower 90s to around 100 today through Thursday. I-5, I-8, I-10, I-11, I-15, I-40 impacted.

— West-central and central California: Heat Advisories are in effect Wednesday and Thursday, with highs generally from 97 to 102 degrees and localized readings up to 105 degrees.

— Coastal portions of southern California: Evening high tides and breaking waves of 3 to 7 feet, with localized sets to 8 feet, may flood vulnerable shoreline roads today and cause isolated closures.

Weather Impacts Mountain:

— A small portion of central Montana: A High Wind Warning remains in effect today, with winds of 25 to 40 mph and gusts up to 60 mph. Travel may be difficult on US-191, especially for high-profile vehicles. US-191 impacted.

— Northwestern and north-central Montana: Flood Watches continue today, including the Flathead and Mission valleys, West Glacier Region and Potomac/Seeley Lake Region. Another 1 to 2 inches of rain is expected in valleys, with more than 3 inches in higher terrain near the Continental Divide and Glacier National Park; flooding may affect low-lying roads and mountain approaches. I-15, I-90, US-2, US-12, US-89, US-93, US-287 potentially impacted.

— Central Wyoming: Red Flag Warnings are in effect today, continuing through Thursday around the Casper-area mountains and Natrona County. Gusts may reach 30 mph in the Wind River Basin and locally 45 mph in warned mountain areas, allowing fires to spread rapidly and potentially cause sudden road closures or reduced visibility from smoke. I-25, US-14, US-16, US-20, US-26, US-287 impacted.

— Western Arizona: Extreme Heat Warnings cover the western deserts today through Friday. Afternoon temperatures of 103 to 112 degrees are expected, including 107 to 110 degrees around Yuma. I-8, I-10, I-11, I-15, I-17, I-40 impacted.

— A small portion of central New Mexico: A Flood Watch is in effect today for the South Central Mountains. Slow-moving storms may produce rainfall rates of 1 to 2 inches per hour, causing rapid runoff and flooding near the South Fork and Salt burn scars, including along US-380 and US-70. US-70, US-380 potentially impacted.

Weather Impacts Central:

— Northern and central North Dakota and northwestern Minnesota: Wind Advisories are in effect today, with sustained winds of 20 to 35 mph and gusts of 45 mph, locally reaching 55 mph in North Dakota. I-29, I-94, US-2, US-52, US-59, US-83, US-85, US-281 impacted.

— Southeastern Nebraska, central and eastern Kansas, a small portion of southwestern Iowa, and western and central Missouri: Extreme Heat Warnings and Advisories are in effect today, with heat index values generally from 103 to 109 degrees. The hottest conditions are expected in areas of eastern Kansas and western Missouri. I-29, I-35, I-44, I-49, I-70, US-36, US-50, US-54, US-56, US-59, US-60, US-77, US-400 impacted.

— East-central and southeastern Nebraska, north-central and northeastern Kansas, southeastern Minnesota, southwestern and south-central Wisconsin, most of Iowa, and northwestern Missouri: Widely scattered severe thunderstorms capable mainly of severe wind gusts are possible across portions of Iowa and eastern Nebraska this afternoon and evening, with more sporadic severe winds and large hail elsewhere. The greatest severe-weather risk is across parts of Iowa. Heavy thunderstorms may also produce localized flash flooding in central and southern Iowa today into early Wednesday. I-29, I-35, I-70, I-80, I-90, I-94 potentially impacted.

— East-central and southern Kansas, northern Oklahoma, much of Missouri, and central and southern Illinois: Isolated strong to severe thunderstorms are possible Wednesday afternoon and evening, with strong wind gusts the main concern. Heavy rain may also cause localized flash flooding and temporary road closures Wednesday into early Thursday from east-central and southeastern Kansas through central Missouri and south-central Illinois. I-29, I-35, I-55, I-64, I-70, I-74 potentially impacted.

— Much of Oklahoma, eastern and south-central Texas, western and central Arkansas, and northwestern Louisiana: Heat Advisories and an Extreme Heat Warning are in effect today. Heat index values of 106 to 112 degrees are expected across much of the region, with the highest values in eastern Oklahoma and west-central Arkansas. South Texas heat index values will reach 108 to 111 degrees, while the Rio Grande Valley and Coastal Bend may reach 113 degrees. I-40, I-44, I-49, US-64, US-69, US-71, US-75, US-281, US-412 impacted.

— A small portion of southwest Tennessee, east-central and southeastern Arkansas, north-central Louisiana, and western and central Mississippi: Heat Advisories are in effect today, with heat index values of 108 to 110 degrees.

Weather Impacts East:

— Most of Indiana, most of Ohio, Upstate New York, and north-central and western Pennsylvania: Isolated strong to severe thunderstorms are possible Wednesday, with sporadic strong wind gusts the main concern. Gusts and lightning may cause localized travel delays, especially later in the day. I-64, I-65, I-70, I-71, I-74, I-75, I-76, I-79, I-80, I-81, I-90 potentially impacted.

— East-central and southeastern Ohio, north-central and central West Virginia, and southwestern Pennsylvania: Heavy rain may cause flash flooding Thursday into early Friday, affecting low-lying roads, valleys and terrain-sensitive routes in the Upper Ohio Valley and central Appalachians. I-64, I-68, I-70, I-71, I-76, I-77, I-79 potentially impacted.

— Coastal portions of southeastern North Carolina, South Carolina, and Georgia: Coastal Flood Advisories are in effect this afternoon and evening. Up to one-half foot of inundation above ground level may affect the lowest roads near downtown Wilmington, the lower Cape Fear River and other tidal waterways.

Tropical Weather Outlook for the next 7 days:

— Southern California coast: Tropical Storm Marie, about 760 miles southwest of San Diego, is moving west-northwest at 8 mph with maximum sustained winds near 45 mph. Swells from Marie will affect portions of the Southern California coast for the next couple of days, producing life-threatening surf and rip currents.

Extended Hazard Outlook

Outlook Thursday September 10th through Monday September 14th:

— Thursday, September 10 through Saturday, September 12: Southern Plains and Lower Mississippi Valley: Hazardous heat may create challenging conditions. The Lower Mississippi Valley portion is limited to Thursday, September 10, while the Oklahoma–Texas–Arkansas and northwestern Louisiana portion continues through Saturday, September 12. Major highways potentially affected include I-10, I-20, I-30, I-35, I-40, I-55.

— Thursday, September 10: From southeastern Kansas and northeastern Oklahoma through the mid-Mississippi and Ohio valleys into the central Appalachians: Heavy rain may create localized flooding and reduced visibility. Major highways potentially affected include I-35, I-55, I-64, I-65, I-70, I-71, I-74, I-75, I-76, I-79, I-80.

— Sunday, September 13: Eastern central Plains through Iowa into the southern Upper Midwest: Heavy rain may create localized flooding and reduced visibility. Major highways potentially affected include I-29, I-35, I-74, I-80, I-90.

Extended Outlook September 15th through 21st:

— Tuesday, September 15 through Saturday, September 19: Southwest and central Rockies into small portions of the western Plains: Heavy precipitation may develop, creating localized flooding and difficult travel. Major highways potentially affected include I-8, I-10, I-25, I-40, I-70, I-76, I-80.

Confidence in the Extended Outlook:

Confidence is average for the earlier period, with generally good agreement on the large-scale pattern through the end of the week. Confidence decreases later as model spread increases and the evolving western and northern U.S. pattern becomes less certain.

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

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Weather Maps and National Outlooks

For current NWS hazards, severe-storm and hurricane outlooks, heavy-rain risk, wind, smoke, heat/winter risk, and other always-updating weather graphics, visit:

Access to real-time road information:

Phone numbers and websites for road conditions in all 50 states. Courtesy of the Cheyenne WY Weather Forecast Office

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Some useful links:

High-resolution radar

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