FNUS75 KBYZ 091846 FWSBYZ Spot Forecast for N Derby RX Prep...USFS National Weather Service Billings MT 1246 PM MDT Thu Jul 9 2026 Forecast is based on forecast start time of 1000 MDT on July 10. If conditions become unrepresentative...contact the National Weather Service. Please contact our office if you have questions or concerns with this forecast. .EXTREME HEAT THIS WEEKEND... .POTENTIAL CRITICAL FIRE WEATHER CONDITIONS SUNDAY... .DISCUSSION... Warm and dry conditions are forecast at the site on Friday. This will precede a stretch of forecast temperatures in the 90sF this weekend and into next week. Temperatures are forecast in the low 80sF tomorrow with minimum RH values in the teens to low 20s percent. Look for light winds out of the northeast through the afternoon. There is a low chance for showers Friday afternoon, mainly between 2 PM MDT and 8 PM MDT. The chance for lightning is very low though a rumble of thunder cannot be ruled out near the mountains. The chance of a wetting rain is very low (less than 10 percent). Any impacts from showers would be erratic wind gusts. Matos .FRIDAY... Sky/weather.........Sunny. Slight chance of showers in the afternoon. Chance of pcpn......20 percent. Max temperature.....81-85. Min humidity........16-21 percent. Surface winds (mph).Light winds becoming northeast 5 to 10 mph in the afternoon. Ridgetop...........Northeast around 10 mph. TIME (MDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........6 6 28 28 28 38 38 38 Weather cov..... SCH SCH SCH SCH SCH SCH Weather type.... RW RW RW RW RW RW Tstm cov........ Chc of pcpn (%).0 0 20 20 20 20 20 20 Temp............72 74 77 79 81 81 81 82 RH..............36 30 28 25 22 20 17 16 Surface wnd dir.N N NE NE NE NE NE NE Surface wnd spd.5 5 6 7 7 9 9 8 Surface wnd gst.8 8 13 13 13 13 13 13 $$ Forecaster...Matos Requested by...Greg Daniels Type of request...OTHER .TAG 2617095.0/BYZ .DELDT 07/10/26 .FormatterVersion 2.0.0 .EMAIL gregory.daniels@usda.gov