The National Weather Service has released its report of total precipitation recorded during the month of June at its cooperative reporting stations across the state of Montana, and it will be no surprise that most of the Golden Triangle saw more rain than normal.

"Normal" is defined as the average for the month of June during the 30-year period from 1981 through 2010.

Worth noting:

  • Gibson Dam reported over 8" of rain in June, and portions of Teton, Cascade and Lewis & Clark Counties that experienced flooding also got far more rain than normal.
  • Several stations along and north of US Highway 2 reported below average rainfall.
  • But for the storm on June 23 that dropped 2.16" in 5 hours, Shelby would have been a bit below average for the month.
Station Location June 2018 Average % of Ave
Bynum 4SSE 3.18” 2.67” 119%
Brady 27ENE 3.29” 2.36” 139%
Chester 2.89” 2.30” 126%
Choteau 3.88” 2.38” 163%
Conrad 2.08” 2.36” 88%
Cut Bank Airport 1.74” 2.55” 68%
Dunkirk 19NNE 3.37” 2.52” 134%
East Glacier 3.14” 3.30” 95%
Fairfield 4.54” 2.41” 188%
Fort Benton 3.03” 2.30” 132%
Galata 16SSW 2.97” 2.54” 117%
Gibson Dam 8.19” 2.92” 280%
Gildford 2.75” 2.35” 117%
Gold Butte 7N 4.22” 3.01” 140%
Great Falls - NWS Office 3.79” 2.57” 147%
Havre Airport 1.32” 2.19” 60%
Hingham 12N 2.06” 2.18” 94%
Joplin 2.01” 2.31” 87%
Loma 1WNW 3.51” 2.29” 153%
Rogers Pass 9NNE 5.51” 2.62” 210%
Rudyard 19S 3.68” 2.33” 158%
Rudyard 21N 1.93” 2.26” 85%
Shelby - KSEN Studio 4.72” 2.66” 177%
Stanford 5.72” 2.74” 209%
Sun River 4S 5.08” 2.41” 211%