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Weather sensor information for Interstate 90 is as follows:
| Nearest Town | Weather Station Name | Milepost | Date / Time | Surface Status | Surface Temp | Precip | Intensity | Wind Avg | Wind Gust | Dir | Dewpoint | Humidity | Air Temp | Visibility |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sheridan | Montana State Line | 0.1 | May 25, 2026, 02:26 AM | None | None | 0.6 mph (1.0 km/h) | 1.9 mph (3.0 km/h) | S | 37.4°F (3.0°C) | 44% | 60.8°F (16.0°C) | > 1/2 mi (> 0.8 km) | ||
| Sheridan | Pompey Creek | 35.3 | May 25, 2026, 02:26 AM | Dry | 58.1°F (14.5°C) | None | None | 4.3 mph (7.0 km/h) | 9.3 mph (15.0 km/h) | NE | 33.8°F (1.0°C) | 34% | 62.6°F (17.0°C) | > 1/2 mi (> 0.8 km) |
| Sheridan | Sheridan/Johnson County Line | 41.33 | Jan 29, 2023, 07:04 PM | |||||||||||
| Buffalo | Piney Creek Interchange | 44.7 | May 25, 2026, 02:26 AM | Dry | 62.8°F (17.1°C) | None | None | 0.6 mph (1.0 km/h) | 0.6 mph (1.0 km/h) | W | 35.6°F (2.0°C) | 53% | 51.8°F (11.0°C) | > 1/2 mi (> 0.8 km) |
| Buffalo | Kearny Divide | 45.33 | May 25, 2026, 02:26 AM | N/A | N/A | N/A | N/A | |||||||
| Buffalo | Indian Creek Road | 83.3 | May 25, 2026, 02:26 AM | Dry | 61.3°F (16.3°C) | None | None | 9.3 mph (15.0 km/h) | 11.2 mph (18.0 km/h) | NW | 30.2°F (-1.0°C) | 25% | 66.2°F (19.0°C) | > 1/2 mi (> 0.8 km) |
| Buffalo | Dead Horse | 91.5 | May 25, 2026, 02:26 AM | Wet | 44.1°F (6.7°C) | None | None | 0.0 mph (0.0 km/h) | 0.0 mph (0.0 km/h) | NW | N/A | N/A | > 1/2 mi (> 0.8 km) | |
| Gillette | Mile Marker 108 | 108 | May 25, 2026, 02:26 AM | Dry | 56.3°F (13.5°C) | None | 0.0 mph (0.0 km/h) | 0.0 mph (0.0 km/h) | SW | 30.2°F (-1.0°C) | 29% | 62.6°F (17.0°C) | > 1/2 mi (> 0.8 km) | |
| Sundance | Inyan Kara | 170.5 | May 25, 2026, 02:26 AM | None | 5.0 mph (8.0 km/h) | 5.6 mph (9.0 km/h) | E | 35.6°F (2.0°C) | 57% | 50.0°F (10.0°C) | ||||
| Sundance | Beulah | 205.9 | May 25, 2026, 02:26 AM | Dry | 57.2°F (14.0°C) | None | None | 0.0 mph (0.0 km/h) | 0.0 mph (0.0 km/h) | W | 39.2°F (4.0°C) | 59% | 53.6°F (12.0°C) | > 1/2 mi (> 0.8 km) |