GIS Map
RankingsMontanaWorst drought

Counties in the Worst Drought in Montana

The top 25 of 56 Montana counties on GIS Map, ranked by the Drought Severity and Coverage Index (0-500), where 500 means the entire county is in exceptional drought.

#CountyDrought Severity Index
1Powder River County
380.7
2Carter County
373.4
3Fallon County
370.2
4Wibaux County
315.1
5Custer County
264.2
6Dawson County
230.1
7Big Horn County
228.7
8Prairie County
214.6
9Wheatland County
198.5
10Carbon County
194.7
11Richland County
180.0
12Sweet Grass County
169.9
13Stillwater County
140.2
14Golden Valley County
127.6
15Rosebud County
108.2
16Meagher County
97.7
17Sanders County
91.3
18Park County
89.6
19Blaine County
87.9
20Fergus County
81.0
21Judith Basin County
80.3
22Mineral County
61.5
23Treasure County
44.5
24Phillips County
34.6
25Yellowstone County
34.2

Source: U.S. Drought Monitor (13 October 2026). All counties with data are ranked. Estimates carry margins of error.

Citing this page: GIS Map, “Counties in the Worst Drought in Montana”, https://gismap.land/rankings/montana/worst-drought-counties. Figures from U.S. Drought Monitor (13 October 2026).

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