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

• Dangerous heat covers much of the central U.S. and Southwest through early next week, with heat index values reaching 117 degrees in the Southern Plains and actual temperatures near 120 degrees in the desert Southwest.
• Severe thunderstorms impact travel from Montana and the northern Plains into the Upper Midwest today, then expand through the Great Lakes and Ohio Valley Sunday and Monday with damaging winds, large hail, and the potential for a tornado or two.
• Flash-flood and road-flooding concerns affect eastern Arizona and western New Mexico, Arkansas, Alabama, and the eastern Carolinas today, with repeated heavy rain and localized totals up to 4 inches.

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:

— Central and western Washington, much of central and western Oregon, northwestern Nevada, northern California, the Idaho Panhandle, and southwest Idaho: Red Flag Warnings today, with wind gusts up to 45 mph supporting rapid fire spread. I-80, I-82, I-84, I-90, US-2, US-12, US-20, US-26, US-50 impacted.

— East-central and southeast Oregon, and southwest Idaho: Heat Advisories today, with temperatures up to 104 degrees.

— Southern Nevada, much of California, and western Arizona, including Death Valley and Joshua Tree National Parks: Extreme Heat Warnings and Advisories continue through Monday, with temperatures locally reaching 120 degrees in the hottest deserts. Coastal Southern California will remain cooler but very warm and humid, while inland valleys, mountains and deserts face dangerous heat and temperatures up to 114 degrees. I-8, I-10, I-11, I-15, I-40, US-60, US-93, US-95, US-395, CA-14 impacted.

Weather Impacts Mountain:

— Southwest, central and eastern Montana, much of southern Idaho, north-central, central and eastern Wyoming, the Nebraska Panhandle, northwest Utah, and eastern Colorado: Extreme Heat Warnings and Heat Advisories continue at various times through Tuesday, with temperatures locally reaching 108 degrees and heat index values up to 105 degrees. I-15, I-90, I-94, US-2, US-12, US-14, US-16, US-20 impacted.

— Southwest Montana and most of Montana east of the Rockies, much of southern Idaho, northeast Wyoming, and western South Dakota: Red Flag Warnings today, with some areas continuing into tonight; thunderstorm outflow gusts may reach 65 mph, and dry lightning may start fires that spread rapidly. I-15, I-84, I-86, I-90, I-94, US-2, US-12, US-14, US-16, US-20 impacted.

— Much of Montana, eastern Idaho, northern and eastern Wyoming, and northwestern Utah: Scattered severe thunderstorms may produce damaging wind this afternoon and evening. The greatest risk of severe weather will be across central and southern Montana. I-15, I-25, I-80, I-84, I-86, I-90, I-94 potentially impacted.

— Southeastern Wyoming and northeastern Colorado: Isolated severe thunderstorms are possible Monday and Monday night. I-25, I-80, US-16, US-18, US-20, US-26, US-30, US-85 potentially impacted.

— Southern Arizona including the Phoenix and Tucson areas, and also the Grand Canyon National Park in north-central Arizona: Extreme Heat Warnings continue through Monday, with temperatures up to 118 degrees; temperatures at Phantom Ranch in the Grand Canyon may reach 112 to 114 degrees. I-8, I-10, I-17, I-19, US-60, US-70, US-89A, US-93, US-180 impacted.

— South-central and southeast Arizona: Isolated severe thunderstorms may produce damaging winds today. I-8, I-10, I-19, US-60, US-70, US-89, US-191 potentially impacted.

— Eastern Arizona and western and central New Mexico: Flash flooding is possible today as thunderstorms produce locally heavy rain, with totals potentially reaching 4 inches. I-10, I-25, I-40, US-54, US-60, US-64, US-70, US-82, US-180, US-191, US-285, US-380, US-491, US-550 potentially impacted.

— West-central, northwestern and south-central New Mexico, including the Ruidoso-area burn scars: Flood Watches today, with slow-moving and repeated thunderstorms producing rainfall rates up to 2 inches per hour, . Flooding of low roads, crossings and poor-drainage areas is possible. I-40, US-60, US-70, US-82, US-380, US-491 impacted.

Weather Impacts Central:

— Northwestern North Dakota: Patchy fog will reduce visibility to one mile or less this morning, with rapid visibility changes. US-2, US-52, US-83, US-85 impacted.

— Much of North Dakota, South Dakota, Nebraska, Kansas, Oklahoma, northern Texas, Minnesota, western Wisconsin, Iowa, Missouri, western and central Illinois, far-western Kentucky, and northern Arkansas: Extreme Heat Warnings, Watches and Heat Advisories continue through Tuesday. Heat index values may reach 117 degrees in Oklahoma and exceed 110 elsewhere, creating dangerous heat for daytime travel and outdoor stops. I-29, I-35, I-35E, I-35W, I-40, I-44, I-70, I-74, I-80, I-88, I-90, I-94 impacted.

— South Dakota, northern Nebraska, most of Minnesota, most of Wisconsin, and northern Iowa: Scattered severe thunderstorms may produce damaging winds, large hail and a tornado today. The greatest risk of severe weather will be across parts of South Dakota. I-29, I-35, I-35E, I-35W, I-39, I-41, I-43, I-90, I-94 potentially impacted.

— Eastern South Dakota, north-central and eastern Nebraska, Minnesota and adjacent eastern North Dakota, Wisconsin, Iowa and adjacent northern Missouri, and northern Illinois: Scattered severe thunderstorms with damaging winds, large hail and a tornado threat are possible Sunday and Sunday night. The greatest risk of severe weather will be across Minnesota, Wisconsin, and northern Iowa. I-29, I-35, I-35E, I-35W, I-39, I-41, I-43, I-55, I-57, I-70, I-72, I-74, I-80, I-88, I-90, I-94 potentially impacted.

— Southwestern South Dakota, western Nebraska, and northwestern Kansas: Isolated severe thunderstorms are possible Monday and Monday night. I-70, I-76, I-80, US-6, US-16, US-18, US-20, US-24, US-26, US-30, US-34, US-36, US-83, US-85, US-136, US-283, US-385 potentially impacted.

— South-central and southeastern Nebraska and adjacent north-central Kansas, and southwest and south-central Iowa: Dense Fog Advisories this morning, with visibility falling to one-quarter mile or less. I-29, I-35, I-80, US-6, US-30, US-34, US-36, US-69 impacted.

— The Minnesota Arrowhead, most of Wisconsin, much of Illinois, and northern and central Kentucky: Scattered severe thunderstorms are possible Monday and Monday night. The greatest risk of severe weather will be across eastern Wisconsin and northeastern Illinois. I-35, I-39, I-41, I-43, I-55, I-57, I-64, I-65, I-69, I-70, I-72, I-74, I-80, I-88, I-90, I-94 potentially impacted.

— Central and southeastern Arkansas: A Flood Watch continues today, with 1 to 3 inches of rain possible and flooding of low-lying roads, creeks and crossings. I-30, I-40, US-49, US-63, US-65, US-67, US-70 impacted.

— Parts of central and northern Alabama: A Dense Fog Advisory this morning may reduce visibility to one-quarter mile or less. I-20, I-22, I-59, I-65, US-43, US-231, US-278, US-431 impacted.

— Central Alabama: A Flood Watch continues today, with excessive runoff potentially flooding low roads, creeks and other flood-prone locations. I-20, I-22, I-59, I-65, US-231, US-278, US-431 impacted.

Weather Impacts East:

— Western and central Michigan Upper Peninsula: Isolated severe thunderstorms with large hail are possible today. US-2, US-8, US-41, US-45, US-51, US-141 potentially impacted.

— Michigan, most of Indiana, and most of Ohio: Scattered severe thunderstorms with damaging winds, large hail and a tornado threat are possible Sunday and Sunday night. The greatest risk of severe weather will be across far-western Michigan Upper Peninsula. I-57, I-65, I-69, I-70, I-71, I-74, I-75, I-76, I-77, I-80, I-90, I-94, I-96 potentially impacted.

— Michigan, Indiana, Ohio, northern and central Kentucky, West Virginia and adjacent western Virginia, far-western New York, western Pennsylvania, and far-western Maryland: More organized severe thunderstorms may produce damaging winds and large hail Monday and Monday night. I-57, I-64, I-65, I-66, I-68, I-69, I-70, I-71, I-74, I-75, I-76, I-77, I-79, I-80, I-81, I-86, I-90, I-94, I-96, I-99 potentially impacted.

— Eastern North Carolina and northeast South Carolina: Flood Watches today. 1 to 2 inches of rain have already fallen in some coastal areas, and an additional 1 to 3 inches are expected. Some locations may see up to 4 inches. Repeated heavy rain may flood streets, low roads and poor-drainage areas. I-20, I-40, I-74, I-95, US-17, US-52, US-64, US-70, US-74 impacted.

— South-central and southeast South Carolina, southeastern Georgia, and northern Florida Peninsula: Isolated severe thunderstorms may produce damaging winds Sunday and Sunday night. I-10, I-16, I-26, I-75, I-95, US-1, US-17, US-23, US-25, US-27, US-41, US-52, US-78, US-84, US-280, US-301 potentially impacted.

— Southeast Georgia and northern and central Florida: Heat Advisories today, with heat index values up to 110 degrees.

Tropical Weather Outlook for the next 7 days:

— Hurricane Fausto: Swells from Fausto are affecting Southern California and are likely to produce life-threatening surf and rip currents. The hurricane will move west and gradually weaken during the next several days.

Outlook Monday July 27th through Friday July 31st:

— Monday, July 27: Interior Southern California and the Southwest: Hazardous heat may create challenging conditions across much of California, Nevada, Utah, and Arizona, extending into southeastern Idaho, northwestern Colorado, and southwestern New Mexico. Major highways potentially affected include I-5, I-8, I-10, I-15, I-40, I-70, I-80, I-84.

— Monday, July 27 through Friday, July 31: Northern Rockies, northern Plains, and Upper Midwest: Hazardous heat may create challenging conditions. The broader Upper Midwest concern is concentrated Monday, while heat may persist through Friday across much of Montana and Wyoming and portions of the western Dakotas and northwestern Nebraska. Major highways potentially affected include I-25, I-29, I-35, I-55, I-64, I-65, I-70, I-74, I-76, I-80, I-90, I-94.

— Monday, July 27 through Friday, July 31: Southern Plains through the Lower Mississippi Valley and Southeast: Hazardous heat may create challenging conditions. The affected area extends farther into Kentucky, Tennessee, South Carolina, and southern North Carolina through Wednesday. Major highways potentially affected include I-4, I-10, I-20, I-25, I-30, I-35, I-40, I-55, I-64, I-65, I-70, I-71, I-75, I-85, I-95.

— Monday, July 27: Southern Great Lakes and Ohio Valley: Severe weather may create rapidly changing and hazardous travel conditions from southeastern Wisconsin and northeastern Illinois through Michigan, Indiana, Ohio, western Pennsylvania, and southwestern New York. Major highways potentially affected include I-55, I-65, I-70, I-71, I-74, I-75, I-76, I-79, I-80, I-90, I-94.

— Monday, July 27: Great Lakes and Ohio Valley into the central Appalachians and New York: Heavy rain may create localized flooding and reduced visibility. Major highways potentially affected include I-64, I-65, I-70, I-71, I-74, I-75, I-76, I-79, I-80, I-81, I-84, I-90, I-94.

— Tuesday, July 28: From eastern Tennessee and the Carolinas through Virginia and the Mid-Atlantic: Severe weather may create rapidly changing and hazardous travel conditions. Major highways potentially affected include I-40, I-64, I-70, I-74, I-76, I-81, I-85, I-87, I-95.

— Tuesday, July 28 through Wednesday, July 29: Mid-Atlantic and Northeast: Heavy rain may create localized flooding and reduced visibility Tuesday from northeastern North Carolina and eastern Virginia through the Mid-Atlantic and Northeast, continuing Wednesday across northeastern New York and New England. Major highways potentially affected include I-64, I-76, I-80, I-81, I-84, I-87, I-90, I-91, I-95.

Extended Outlook August 1st through August 7th:

— Saturday, August 1 through Friday, August 7: From the Pacific Northwest and California through the Rockies and Plains into the Lower Mississippi Valley and parts of the Southeast: Extreme heat may develop, creating challenging conditions. Extreme heat is likely Saturday through Tuesday across much of the West and Southwest into Oklahoma and Texas. 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-64, I-65, I-70, I-75, I-76, I-80, I-84, I-90, I-94, I-95.

— Saturday, August 1 through Sunday, August 2: Northern Florida, southern Georgia, and the coastal Carolinas: Heavy precipitation may develop across much of Florida, Georgia, the Carolinas, southeastern Alabama, and a small portion of southeastern Virginia, creating localized flooding and difficult travel. Major highways potentially affected include I-4, I-10, I-40, I-65, I-75, I-95.

— Sunday, August 2 through Friday, August 7: Arizona and adjacent portions of southeastern California, and southern Nevada: Heavy precipitation may develop, creating localized flooding and difficult travel. Major highways potentially affected include I-8, I-10, I-15, I-40.

— Wednesday, August 5 through Friday, August 7: Upper Midwest, lower Great Lakes, and Ohio Valley: Extreme heat may develop across portions of the region from northeastern South Dakota and southwestern Minnesota through Iowa, Illinois, Indiana, Ohio, Kentucky, and northwestern Tennessee, creating challenging conditions. Major highways potentially affected include I-29, I-35, I-40, I-55, I-64, I-65, I-70, I-71, I-74, I-75, I-80, I-90, I-94.

Confidence in the Extended Outlook:

Confidence is average for the earlier period, with generally good agreement on the large-scale pattern but some uncertainty in the timing of northern-stream energy. Confidence decreases later because of a potential pattern transition and greater ensemble spread.

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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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