Idaho local data guide

Time Difference Between Boise and UTC During Winter

During the winter months, Boise, Idaho, observes Mountain Standard Time (MST), which is 7 hours behind Coordinated Universal Time (UTC).

Updated with grounded research as of 2026-08-28.

The short answer

During the winter months, Boise, Idaho, is located in the Mountain Time Zone and observes Mountain Standard Time (MST). In this period, Boise operates at UTC-7, meaning the local time is 7 hours behind Coordinated Universal Time (UTC).

Key facts

Time Zone in Winter
Mountain Standard Time (MST)
UTC Offset in Winter
UTC-7

Understanding Mountain Standard Time

Boise, located in southwestern Idaho, falls within the Mountain Time Zone. During the winter months—specifically from early November to early March—the region adheres to Mountain Standard Time (MST). This standard time offset is UTC-7, which remains consistent for the duration of the winter season.

The Transition to Daylight Saving Time

It is important to note that the UTC offset in Boise is not static throughout the entire year. When Daylight Saving Time (DST) begins in the spring, the region shifts to Mountain Daylight Time (MDT). During this period, the offset changes to UTC-6, moving the local clock one hour forward.

Geographic Considerations in Idaho

While Boise operates on Mountain Time year-round, not all of Idaho follows the same time zone rule. The northern part of the state (specifically the Idaho Panhandle, north of the Salmon River) observes Pacific Time. Residents or those planning a move should verify local time zones if they are traveling or conducting business across different regions of the state.

Common questions

When does Daylight Saving Time begin and end in Idaho?

In the United States, Daylight Saving Time typically begins on the second Sunday in March and ends on the first Sunday in November.

Does the entire state of Idaho observe the same time zone?

No. Most of Idaho, including Boise, is in the Mountain Time Zone. However, the northern portion of the state, encompassing the region north of the Salmon River, observes Pacific Time.

Related Idaho questions

  • When does Daylight Saving Time begin and end in Idaho?
  • Does the entire state of Idaho observe the same time zone?

Sources and verification