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Highway Travel Weather

Interstate 15 – Montana to California

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Aug 13, 2026 - Thu
Great Falls, United States
overcast clouds
64°F overcast clouds
Wind 6 mph, N
Humidity 74%
Pressure 1.02 bar
Day Cond. Temp. Wind Humidity PressurePres.
thu aug 13
light rain
 63/57°F 15 mph, N 78% 1.02 bar
fri aug 14
light rain
 59/59°F 10 mph 79% 1.02 bar
sat aug 15
broken clouds
 73/69°F 11 mph, ENE 45% 1.02 bar
sun aug 16
overcast clouds
 86/74°F 16 mph, NW 20% 1.02 bar
mon aug 17
light rain
 76/70°F 9 mph, NNE 36% 1.02 bar
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Aug 13, 2026 - Thu
Butte, United States
overcast clouds
72°F overcast clouds
Wind 5 mph
Humidity 40%
Pressure 1.01 bar
Day Cond. Temp. Wind Humidity PressurePres.
thu aug 13
heavy intensity rain
 67/53°F 10 mph, WNW 51% 1.01 bar
fri aug 14
moderate rain
 59/53°F 7 mph, NW 66% 1.02 bar
sat aug 15
light rain
 72/56°F 19 mph, SW 36% 1.02 bar
sun aug 16
few clouds
 77/61°F 27 mph, WSW 26% 1.02 bar
mon aug 17
light rain
 74/58°F 14 mph, WSW 35% 1.02 bar
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Aug 13, 2026 - Thu
Idaho Falls, United States
light rain
60°F light rain
Wind 1 mph, SE
Humidity 90%
Pressure 1.02 bar
Day Cond. Temp. Wind Humidity PressurePres.
thu aug 13
moderate rain
 62/61°F 9 mph, S 85% 1.01 bar
fri aug 14
moderate rain
 63/61°F 11 mph, SSW 76% 1.02 bar
sat aug 15
light rain
 78/65°F 18 mph, SSE 38% 1.02 bar
sun aug 16
sky is clear
 85/75°F 10 mph, SW 22% 1.02 bar
mon aug 17
light rain
 83/71°F 15 mph, SSE 27% 1.01 bar
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Aug 13, 2026 - Thu
Salt Lake City, United States
overcast clouds
78°F overcast clouds
Wind 9 mph, W
Humidity 57%
Pressure 1.01 bar
Day Cond. Temp. Wind Humidity PressurePres.
thu aug 13
light rain
 77/69°F 12 mph, W 56% 1.01 bar
fri aug 14
light rain
 80/72°F 11 mph, SW 27% 1.01 bar
sat aug 15
sky is clear
 89/74°F 12 mph, NW 19% 1.02 bar
sun aug 16
light rain
 93/76°F 9 mph, WSW 14% 1.02 bar
mon aug 17
scattered clouds
 92/82°F 10 mph, SSW 19% 1.02 bar
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Aug 13, 2026 - Thu
Las Vegas, United States
overcast clouds
77°F overcast clouds
Wind 24 mph, SSW
Humidity 61%
Pressure 1.01 bar
Day Cond. Temp. Wind Humidity PressurePres.
thu aug 13
light rain
 82/83°F 19 mph, SSW 53% 1.01 bar
fri aug 14
overcast clouds
 98/85°F 18 mph, SW 16% 1.01 bar
sat aug 15
light rain
 91/88°F 17 mph, SSE 29% 1.02 bar
sun aug 16
broken clouds
 94/92°F 6 mph, ESE 23% 1.01 bar
mon aug 17
broken clouds
 98/96°F 17 mph, WSW 17% 1.01 bar
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Aug 13, 2026 - Thu
San Bernardino, United States
overcast clouds
88°F overcast clouds
Wind 5 mph, SSW
Humidity 44%
Pressure 1.01 bar
Day Cond. Temp. Wind Humidity PressurePres.
thu aug 13
overcast clouds
 85/70°F 10 mph, WSW 48% 1.01 bar
fri aug 14
sky is clear
 85/72°F 10 mph, W 36% 1.02 bar
sat aug 15
sky is clear
 87/74°F 9 mph, WSW 27% 1.02 bar
sun aug 16
sky is clear
 90/77°F 9 mph, WSW 25% 1.02 bar
mon aug 17
sky is clear
 92/80°F 9 mph, WSW 27% 1.02 bar
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Aug 13, 2026 - Thu
San Diego, United States
overcast clouds
77°F overcast clouds
Wind 7 mph, SW
Humidity 71%
Pressure 1.01 bar
Day Cond. Temp. Wind Humidity PressurePres.
thu aug 13
overcast clouds
 79/70°F 9 mph, WSW 69% 1.01 bar
fri aug 14
sky is clear
 82/72°F 10 mph, W 65% 1.02 bar
sat aug 15
overcast clouds
 74/72°F 10 mph, WNW 70% 1.02 bar
sun aug 16
sky is clear
 77/75°F 11 mph, WNW 63% 1.02 bar
mon aug 17
sky is clear
 77/75°F 10 mph, WNW 62% 1.02 bar