Expires:202607261500;;600006 FPUS55 KBYZ 252151 ZFPBYZ Zone Forecast Product for South Central and Southeast Montana National Weather Service Billings MT 350 PM MDT Sat Jul 25 2026 Spot temperatures and probabilities of measurable precipitation are for tonight, Sunday, Sunday night, and Monday. MTZ173-261500- Northeastern Yellowstone- Including the cities of Custer and Pompeys Pillar 350 PM MDT Sat Jul 25 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 9 PM MDT SUNDAY... ...SEVERE THUNDERSTORM WATCH 514 IN EFFECT UNTIL 10 PM MDT THIS EVENING... .TONIGHT...Partly cloudy. Chance of showers and slight chance of thunderstorms in the evening. Some thunderstorms may be severe with damaging winds early in the evening. Some thunderstorms may produce damaging winds late in the evening. Lows in the upper 60s. Northeast winds 5 to 10 mph in the evening shifting to the west overnight. Chance of precipitation 30 percent. .SUNDAY...Increasing clouds. Patchy smoke late in the morning. Areas of smoke in the afternoon. A 20 percent chance of showers late in the afternoon. Highs around 101. Northwest winds 5 to 10 mph in the morning shifting to the northeast 5 to 15 mph in the afternoon. .SUNDAY NIGHT...Mostly cloudy. Slight chance of showers and thunderstorms early in the evening, then slight chance of showers late in the evening. Areas of smoke early in the evening. Patchy smoke late in the evening. Some thunderstorms may produce gusty winds early in the evening. Lows in the upper 60s. Southwest winds 5 to 10 mph. Chance of precipitation 20 percent. .MONDAY...Decreasing clouds. Highs around 100. North winds 5 to 10 mph. .MONDAY NIGHT...Partly cloudy. A 20 percent chance of showers in the evening. Lows in the upper 60s. Northeast winds 5 to 10 mph. .TUESDAY...Sunny. Highs around 102. .TUESDAY NIGHT...Partly cloudy. Lows in the upper 60s. .WEDNESDAY...Sunny. Highs around 101. .WEDNESDAY NIGHT...Partly cloudy. Lows in the upper 60s. .THURSDAY...Sunny. Highs around 101. .THURSDAY NIGHT...Partly cloudy. Lows in the upper 60s. .FRIDAY...Sunny. Highs around 103. .FRIDAY NIGHT...Partly cloudy. Lows in the upper 60s. .SATURDAY...Sunny. Highs around 104. $$