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

• Life-threatening flash flooding is ongoing across west-central and south-central Texas, especially along I-10 between Fort Stockton and San Antonio.
• Dangerous heat affects the Southwest, northern Plains, Upper Midwest, and Northeast corridor today through Thursday, with temperatures up to 116°F in the Southwest and heat index values up to 110°F elsewhere.
• Severe thunderstorms may bring damaging winds, large hail, and tornadoes to northern New York and northern New England this afternoon and evening.

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

— Northern, central, and eastern Nevada: Flood Watch today, with thunderstorms capable of rainfall rates of 1 inch per hour or more and flash flooding of low-lying roads and crossings. I-80, US-6, US-50, US-93, US-95 potentially impacted.

— Northwest California: Red Flag Warning today and tonight, with wind gusts up to 50 mph supporting rapid fire spread. CA-3, CA-36, CA-96, CA-299 impacted.

— Northern and central California coast, including Humboldt Bay, San Francisco Bay, Point Reyes National Seashore, and Monterey Bay: Coastal Flood Advisories today through early Thursday, with up to 2 feet of inundation possible on low-lying shoreline and tidal roads.

— Central and northern California interior valleys and foothills, including San Jose: Heat Advisories today through Thursday, with temperatures up to 108 degrees and low 100s in other interior areas.

— Southern California and adjacent southwest Arizona: Extreme Heat Warnings and Advisories today through Thursday, with desert temperatures up to 116 degrees, inland valleys and mountains up to 110 degrees, and coastal Orange and San Diego Counties near 90 degrees Wednesday and Thursday. I-5, I-8, I-10, I-15, US-60, US-95, US-101, CA-1, CA-2 impacted.

Weather Impacts Mountain:

— Much of central and southwest Montana: Flood Watches today and tonight, with thunderstorms capable of rainfall rates greater than 1 inch per hour and flash flooding of low roads, streams, and burn-scar areas. I-15, I-90, I-94, US-2, US-12, US-87, US-89, US-191 potentially impacted.

— Central and southwest Montana: Isolated severe thunderstorms are possible today, with damaging wind gusts and hail. I-15, I-90, I-94, US-2, US-12, US-20, US-87, US-89, US-93, US-191, US-212, US-287 potentially impacted.

— Central and eastern Montana, much of Wyoming, western South Dakota, and the Nebraska Panhandle: Extreme Heat Warnings and Advisories today through Thursday, with heat index values up to 110 degrees and temperatures up to 105 degrees. I-25, I-80, I-90, I-94, US-12, US-14, US-16, US-20, US-26 impacted.

— Much of eastern Wyoming, western South Dakota, and the Nebraska Panhandle: Red Flag Warnings today, continuing Wednesday in southeast Wyoming and the Nebraska Panhandle, with wind gusts up to 35 mph supporting rapid fire spread. I-25, I-80, I-90, US-12, US-14, US-16, US-18, US-20 impacted.

— Southern Utah, most of Arizona, and adjacent western New Mexico: Flash flooding is possible Thursday into early Friday from locally heavy thunderstorms, with water over low roads and crossings possible. I-8, I-10, I-15, I-17, I-19, I-40, I-70 potentially impacted.

— Central and northwestern Arizona: Flash flooding is possible Wednesday from locally heavy thunderstorms, with flooding of low roads and crossings possible. I-17, I-40, US-60, US-70, US-89, US-93, US-180, US-191 potentially impacted.

Weather Impacts Central

— West-central and south-central Texas, especially along the I-10 corridor between Ft Stockton and San Antonio: Multiple FLASH FLOOD WARNINGS continue through the morning. Rainfall totals of up to 9 inches have already been observed, rates are up to 3.5 inches per hour, and another 1 to 4 inches is possible; life-threatening flash flooding of roads, underpasses, creeks, and low-water crossings is ongoing or expected. I-10, US-67, US-90, US-190, US-277, US-281 and surrounding highways impacted.

— Western, central, and south-central Texas: Flood Watches and Advisories today through Thursday, with 1 to 3 inches already fallen in some areas, repeated storms capable of 1 to 3 inches per hour, storm totals of 2 to 6 inches, and isolated totals of 10 to 15 inches; water over low roads and extensive urban and small-stream flooding are possible. The greatest flash-flood risk will be across central and southern Texas. I-10, I-14, I-20, I-35, I-37, US-67, US-77, US-79, US-83, US-84 impacted.

— Central and southern Texas: Flash flooding remains possible Thursday into early Friday, with another 2 to 4 inches, locally higher, over compromised soils and areas with ongoing flooding. The greatest flash-flood risk will be across central and southern Texas. I-10, I-20, US-67, US-79, US-83, US-84, US-87, US-90, US-180, US-190, US-277, US-285, US-290, US-385 potentially impacted.

— South-central Louisiana: FLASH FLOOD WARNING continues until 9 AM CDT in Lafayette Parish, where 1 to 3 inches of rain fell in the past hour and flash flooding of streets, underpasses, and poor-drainage areas is ongoing or expected. I-10, I-49, US-90, US-167 impacted.

— Much of North and South Dakota, much of Minnesota, Wisconsin, and northeast Iowa, including Voyageurs National Park: Extreme Heat Warnings and Advisories today through Thursday, with heat index values up to 105 degrees. I-29, I-35, I-35E, I-35W, I-94, US-2, US-8, US-10, US-12, US-51 impacted.

— Northern Minnesota: Red Flag Warning with wind gusts up to 20 mph and very dry fuels supporting rapid fire spread. US-2, US-53, US-59, US-71 impacted.

— Eastern Louisiana and southwest Mississippi: Flood Advisory continues through July 22 along the Mississippi River near Natchez, with lowlands outside levees beginning to flood. US-61, US-65, US-84 impacted.

— Central and northern Mississippi and west-central Alabama: Flash flooding is possible today and tonight from heavy thunderstorms, with flooding of low roads and poor-drainage areas possible. I-20, I-22, I-55, I-59, I-65, I-85 potentially impacted.

Weather Impacts East

— Michigan, northern Indiana, and northern Ohio: Extreme Heat Warnings (Upper Peninsula) and Advisories today, with heat index values up to 105 degrees. US-2, US-41, US-45 impacted.

— Maine, much of New Hampshire, most of Vermont, and New York Adirondack Mountains: Organized severe thunderstorms are possible today, mainly this afternoon and evening, with damaging winds, large hail, and tornadoes. The greatest risk of severe weather will be across western Maine, northwestern New Hampshire, and northern Vermont. I-81, I-87, I-89, I-91, I-93, I-95 potentially impacted.

— Parts of Maine, New Hampshire, Vermont, Massachusetts, Connecticut, and upstate New York: Heat Advisories today, with heat index values up to 105 degrees.

— Massachusetts, Rhode Island, Connecticut, southeast New York including New York City, New Jersey, central and eastern Pennsylvania, Maryland, Eastern Shore and Delaware: Heat Advisories today and Wednesday, with heat index values up to 104 degrees today and 109 degrees Wednesday; Extreme Heat Warnings cover Philadelphia, parts of New Jersey, and northern Delaware Wednesday. I-76, I-78, I-95, US-13, US-30, US-40, US-202, US-322 impacted.

— Coastal North Carolina and South Carolina, including the lower Cape Fear River and Wilmington: Coastal Flood Advisories this evening into early Wednesday, with one-half to 1 foot of inundation expected on low-lying shoreline, tidal, and beach-access roads.

— Southern Florida Peninsula: Heat Advisory today, with heat index values of 105 to 109 degrees.

Outlook Thursday July 16th through Sunday July 20th:

— Thursday, July 16 through Saturday, July 18: from Utah and northwestern Colorado through eastern Wyoming, the western Dakotas, and northwestern Nebraska: Hazardous heat. Major highways potentially affected include I-15, I-25, I-70, I-80, I-84, I-90, I-94.

— Thursday, July 16 through Sunday, July 19: across the northern and central Plains and Upper Midwest, extending into the Great Lakes and Ohio Valley on Thursday: Hazardous heat. Major highways potentially affected include I-29, I-35, I-55, I-65, I-70, I-71, I-74, I-75, I-80, I-90, I-94.

— Thursday, July 16 through Friday, July 17: much of Virginia and portions of the Mid-Atlantic from the District of Columbia through New Jersey: Hazardous heat. Major highways potentially affected include I-64, I-70, I-76, I-85, I-95.

— Thursday, July 16 through Monday, July 20: Florida, much of Georgia and the Carolinas, and southeastern Virginia: Hazardous heat. Major highways potentially affected include I-4, I-10, I-20, I-40, I-74, I-75, I-85, I-87, I-95.

— Sunday, July 19 through Monday, July 20: from southeastern Kansas and Oklahoma through the middle and Lower Mississippi Valleys: Hazardous heat. Major highways potentially affected include I-10, I-20, I-29, I-30, I-35, I-40, I-55, I-64, I-70.

Extended Outlook July 21st through July 27th:

— Tuesday, July 21 through Monday, July 27: portions of western California: Extreme heat may develop. Major highways potentially affected include I-5, I-80.

— Tuesday, July 21 through Saturday, July 25: much of Utah and Colorado, most of Arizona and New Mexico, and small portions of far-western Texas: Heavy precipitation may develop, which could lead to localized flooding and reduced visibility. Major highways potentially affected include I-8, I-10, I-15, I-25, I-40, I-70.

— Tuesday, July 21 through Monday, July 27: from the southern Plains through the Lower Mississippi Valley and Southeast: Extreme heat may develop. Major highways potentially affected include I-4, I-10, I-20, I-30, I-35, I-40, I-55, I-65, I-70, I-74, I-75, I-85, I-95.

— Tuesday, July 21 through Thursday, July 23: from much of eastern Georgia through most of South Carolina, North Carolina, and Virginia: Heavy precipitation may develop, which could lead to localized flooding and reduced visibility. Major highways potentially affected include I-20, I-40, I-64, I-74, I-81, I-85, I-87, I-95.

Confidence in the Extended Outlook:

Confidence is above average for the earlier part of the outlook, with good agreement on the broad pattern and continued heat. Confidence decreases to about average later because of uncertainty in how the pattern weakens and how precipitation evolves across the central United States.

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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 outlooks, heavy-rain risk, wind, smoke, heat/winter risk, and other automated 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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