4.1 (Moderate)
Last Updated 21 minutes ago
The hourly Heart Butte, MT UV Index forecast for Friday, July 18th, 2025.
Last Updated 5 hours ago
The UV index forecast for the next five days in Heart Butte, MT has no days reaching the extreme level and 2 days reaching the high or very high levels. The peak UV intensity in Heart Butte over the next five days will be 8.9 on Friday, July 18th at 2:00 pm.
The UV index forecast for Friday, July 18th in Heart Butte, MT is below.
| Time | UV Index | Risk |
|---|---|---|
| 6pm | 2.2 |
Low |
| 7pm | 1 |
Low |
| 8pm | 0.3 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Saturday, July 19th in Heart Butte, MT is below.
| Time | UV Index | Risk |
|---|---|---|
| 12am | 0 |
Low |
| 1am | 0 |
Low |
| 2am | 0 |
Low |
| 3am | 0 |
Low |
| 4am | 0 |
Low |
| 5am | 0 |
Low |
| 6am | 0 |
Low |
| 7am | 0.3 |
Low |
| 8am | 0.9 |
Low |
| 9am | 2 |
Low |
| 10am | 3.8 |
Moderate |
| 11am | 5.8 |
Moderate |
| 12pm | 7.5 |
High |
| 1pm | 8.4 |
Very High |
| 2pm | 8.3 |
Very High |
| 3pm | 7 |
High |
| 4pm | 5.4 |
Moderate |
| 5pm | 3.6 |
Moderate |
| 6pm | 2 |
Low |
| 7pm | 0.9 |
Low |
| 8pm | 0.3 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Sunday, July 20th in Heart Butte, MT is below.
| Time | UV Index | Risk |
|---|---|---|
| 12am | 0 |
Low |
| 1am | 0 |
Low |
| 2am | 0 |
Low |
| 3am | 0 |
Low |
| 4am | 0 |
Low |
| 5am | 0 |
Low |
| 6am | 0 |
Low |
| 7am | 0.2 |
Low |
| 8am | 0.8 |
Low |
| 9am | 1.7 |
Low |
| 10am | 3 |
Moderate |
| 11am | 3.2 |
Moderate |
| 12pm | 4.2 |
Moderate |
| 1pm | 4.6 |
Moderate |
| 2pm | 5.1 |
Moderate |
| 3pm | 5.9 |
Moderate |
| 4pm | 5.3 |
Moderate |
| 5pm | 3.5 |
Moderate |
| 6pm | 1.9 |
Low |
| 7pm | 0.8 |
Low |
| 8pm | 0.2 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Monday, July 21st in Heart Butte, MT is below.
| Time | UV Index | Risk |
|---|---|---|
| 12am | 0 |
Low |
| 1am | 0 |
Low |
| 2am | 0 |
Low |
| 3am | 0 |
Low |
| 4am | 0 |
Low |
| 5am | 0 |
Low |
| 6am | 0 |
Low |
| 7am | 0.1 |
Low |
| 8am | 0.3 |
Low |
| 9am | 0.5 |
Low |
| 10am | 0.6 |
Low |
| 11am | 0.6 |
Low |
| 12pm | 0.6 |
Low |
| 1pm | 0.6 |
Low |
| 2pm | 0.6 |
Low |
| 3pm | 0.6 |
Low |
| 4pm | 0.6 |
Low |
| 5pm | 0.8 |
Low |
| 6pm | 1.6 |
Low |
| 7pm | 0.8 |
Low |
| 8pm | 0.2 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Tuesday, July 22nd in Heart Butte, MT is below.
| Time | UV Index | Risk |
|---|---|---|
| 12am | 0 |
Low |
| 1am | 0 |
Low |
| 2am | 0 |
Low |
| 3am | 0 |
Low |
| 4am | 0 |
Low |
| 5am | 0 |
Low |
| 6am | 0 |
Low |