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Highway Travel Weather

Interstate 15 – Montana to California

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Sep 8, 2026 - Tue
Great Falls, United States
overcast clouds
56°F overcast clouds
Wind 18 mph, WSW
Humidity 61%
Pressure 1.02 bar
Day Cond. Temp. Wind Humidity PressurePres.
tue sep 8
light rain
 59/53°F 23 mph, WNW 56% 1.02 bar
wed sep 9
sky is clear
 72/63°F 19 mph, WSW 27% 1.02 bar
thu sep 10
broken clouds
 83/68°F 26 mph, WSW 15% 1.01 bar
fri sep 11
light rain
 56/51°F 14 mph, NNW 57% 1.02 bar
sat sep 12
overcast clouds
 54/53°F 15 mph, NE 54% 1.02 bar
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Sep 8, 2026 - Tue
Butte, United States
clear sky
36°F clear sky
Wind 3 mph, ESE
Humidity 93%
Pressure 1.02 bar
Day Cond. Temp. Wind Humidity PressurePres.
tue sep 8
broken clouds
 60/44°F 16 mph, WNW 30% 1.02 bar
wed sep 9
overcast clouds
 65/49°F 18 mph, WNW 24% 1.02 bar
thu sep 10
sky is clear
 76/52°F 22 mph, WSW 14% 1.01 bar
fri sep 11
light rain
 58/49°F 12 mph, WNW 21% 1.01 bar
sat sep 12
overcast clouds
 53/49°F 7 mph, E 45% 1.01 bar
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Sep 8, 2026 - Tue
Idaho Falls, United States
clear sky
46°F clear sky
Wind 2 mph, SSE
Humidity 66%
Pressure 1.02 bar
Day Cond. Temp. Wind Humidity PressurePres.
tue sep 8
sky is clear
 71/56°F 16 mph, WSW 18% 1.02 bar
wed sep 9
sky is clear
 75/60°F 14 mph, WSW 13% 1.02 bar
thu sep 10
sky is clear
 80/68°F 20 mph, WSW 13% 1.01 bar
fri sep 11
broken clouds
 74/58°F 20 mph, SW 12% 1.01 bar
sat sep 12
light rain
 75/67°F 18 mph, WSW 28% 1.01 bar
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Sep 8, 2026 - Tue
Salt Lake City, United States
clear sky
59°F clear sky
Wind 5 mph, SE
Humidity 50%
Pressure 1.02 bar
Day Cond. Temp. Wind Humidity PressurePres.
tue sep 8
sky is clear
 81/71°F 10 mph, NW 23% 1.02 bar
wed sep 9
few clouds
 85/69°F 10 mph, NW 12% 1.02 bar
thu sep 10
broken clouds
 89/77°F 9 mph, NW 10% 1.01 bar
fri sep 11
light rain
 77/73°F 8 mph, NW 38% 1.01 bar
sat sep 12
light rain
 80/80°F 13 mph, SSW 37% 1.01 bar
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Sep 8, 2026 - Tue
Las Vegas, United States
broken clouds
79°F broken clouds
Wind 7 mph, SW
Humidity 29%
Pressure 1.01 bar
Day Cond. Temp. Wind Humidity PressurePres.
tue sep 8
sky is clear
 95/88°F 7 mph, NNE 25% 1.01 bar
wed sep 9
overcast clouds
 100/94°F 5 mph, WNW 17% 1.01 bar
thu sep 10
few clouds
 103/95°F 21 mph, WSW 15% 1.01 bar
fri sep 11
light rain
 94/92°F 25 mph, SW 22% 1.01 bar
sat sep 12
sky is clear
 96/86°F 25 mph, WSW 16% 1.01 bar
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Sep 8, 2026 - Tue
San Bernardino, United States
broken clouds
78°F broken clouds
Wind 2 mph, N
Humidity 68%
Pressure 1.01 bar
Day Cond. Temp. Wind Humidity PressurePres.
tue sep 8
overcast clouds
 87/83°F 10 mph, SW 30% 1.01 bar
wed sep 9
scattered clouds
 91/88°F 8 mph, WSW 25% 1.02 bar
thu sep 10
few clouds
 98/84°F 10 mph, WSW 28% 1.01 bar
fri sep 11
sky is clear
 89/79°F 10 mph, W 36% 1.01 bar
sat sep 12
sky is clear
 83/74°F 10 mph, WSW 47% 1.01 bar
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Sep 8, 2026 - Tue
San Diego, United States
overcast clouds
80°F overcast clouds
Wind 8 mph, N
Humidity 66%
Pressure 1.01 bar
Day Cond. Temp. Wind Humidity PressurePres.
tue sep 8
light rain
 98/82°F 12 mph, NW 54% 1.01 bar
wed sep 9
light rain
 99/77°F 9 mph, WNW 52% 1.01 bar
thu sep 10
sky is clear
 79/74°F 10 mph, SW 60% 1.01 bar
fri sep 11
sky is clear
 75/72°F 13 mph, SSW 69% 1.01 bar
sat sep 12
scattered clouds
 73/70°F 10 mph, SW 68% 1.01 bar