US Highway Forecast: I-15
US Highway Forecast: I-15
The short-term forecasts below are for cities or towns located along the specified highway. Click on a city or town to see its current conditions as well as long-term forecast.
Short Term Forecast
| City |
Sunday 10am |
Sunday 1pm |
Sunday 4pm |
|---|---|---|---|
| Sweetgrass, Montana |
 4°C
Variable cloudiness |
5°C
Variable cloudiness |
 3°C
Cloudy periods |
| Las Vegas, Nevada |
 21°C
Cloudy periods |
24°C
Cloudy periods |
24°C
Mainly clear |
| Cedar City, Utah |
11°C
Cloudy periods |
14°C
Cloudy periods |
 13°C
Clear |
| Salt Lake City, Utah |
9°C
Variable cloudiness |
13°C
Variable cloudiness |
 11°C
Variable cloudiness |
| Helena, Montana |
5°C
Variable cloudiness |
8°C
Variable cloudiness |
4°C
Cloudy periods |
| Great Falls, Montana |
8°C
Variable cloudiness |
9°C
Variable cloudiness |
4°C
Variable cloudiness |
| Ontario, California |
20°C
Mainly sunny |
24°C
Mainly sunny |
20°C
Mainly clear |
| San Diego, California |
17°C
Mainly sunny |
19°C
Mainly sunny |
17°C
Cloudy periods |
| Idaho Falls, Idaho |
5°C
Cloudy periods |
8°C
Cloudy periods |
7°C
Cloudy periods |
| Butte, Montana |
1°C
Cloudy periods |
6°C
Cloudy periods |
4°C
Mainly clear |
| Barstow, California |
 18°C
Sunny |
23°C
Sunny |
24°C
Clear |
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