Wyoming DWUI: First Offense

Last reviewed: 2026-07-30

A first DWUI in Wyoming is generally classified as a misdemeanor.

• Jail: none – 6 months
• Fine: $0–$750 (up to $750 plus costs)
• License suspension: 90-day suspension – 90 days; hardship: probationary license; IID if 0.15+
• Ignition interlock: Not required at this level — IID 6 months mandatory if BAC 0.15+ on a first offense.
• Alternative disposition: Substance-abuse assessment; probation common; no formal charge-dismissal diversion statewide.

Lookback period: 10 years. 10-year lookback for the felony trigger; a 2-year window sharpens some second/third jail exposure. 4th within 10 = felony.