A dry August and record heat in early September caused the drought to expand further into northeastern Montana.

Drought in EASTERN ROOSEVELT, MONTANA
From 13-SEP-22 00:00:00 to 30-SEP-22 23:59:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Drought Monitor

On the second week of September, drought conditions worsened to (D2-Severe) along the western and southern edges of Eastern Roosevelt County, while the northeastern three quarters of the county was in (D1-Moderate) drought.  On the last week of September, the entire area of Eastern Roosevelt County worsened to (D2-Severe) drought.

Drought in RICHLAND, MONTANA
From 13-SEP-22 00:00:00 to 30-SEP-22 23:59:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Drought Monitor

During the second week of September, the northeastern half of Richland County worsened to (D2-Severe) drought conditions, while the southwestern half was in (D1-Moderate) drought.  By the third week of September all of Richland County had worsened to (D2-Severe) drought conditions.  On the last week of September an area of southwestern Richland County as well as the far northwestern corner had worsened to (D3-Extreme) drought, while the remainder of Richland County remained in (D2-Severe) conditions.

Drought in MCCONE, MONTANA
From 13-SEP-22 00:00:00 to 30-SEP-22 23:59:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Drought Monitor

On the second week of September, the northwestern quarter and the far northeastern corner of McCone County were in (D2-Severe) conditions, while the remainder of the county was in (D1-Moderate) drought.  By the third week of September, all but the far southern tip and far southwestern corner of McCone County had worsened to (D2-Severe) conditions, while these two small areas remained in (D1-Moderate) drought.  By the last week of September the northern quarter and the southeastern quarter of McCone County had worsened to (D3-Extreme) drought, while the remaining half of McCone County in between these two areas was in (D2-Severe) conditions.

Drought in GARFIELD, MONTANA
From 13-SEP-22 00:00:00 to 30-SEP-22 23:59:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Drought Monitor

On the second week of September, drought conditions on the northern quarter of Garfield County worsened to (D2-Severe), with the north central quarter of Garfield County in (D1-Moderate) drought, the south central quarter in (D0-Abnormally Dry) conditions and the southern quarter of the county in no drought classification at all.  On the third week of September the northern third of Garfield County worsened to (D2-Severe) conditions, the middle third worsened to (D1-Moderate) drought and the southern third worsened to (D0-Abnormally Dry) conditions.  During the last week of September the northern third of Garfield County remained in (D2-Severe) conditions while the southern two thirds worsened to (D1-Moderate) drought.

Drought in CENTRAL AND SE PHILLIPS, MONTANA
From 13-SEP-22 00:00:00 to 30-SEP-22 23:59:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Drought Monitor

On the second week of September, all of Central and Southeast Phillips County worsened to (D2-Severe) conditions.  These conditions would remain the same through the end of September.

Drought in PETROLEUM, MONTANA
From 13-SEP-22 00:00:00 to 30-SEP-22 23:59:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Drought Monitor

During the second week of September, the northwestern corner of Petroleum County worsened to (D2-Severe) conditions.  Meanwhile the northcentral area of Petroleum County was in (D1-Moderate) drought, the southwestern corner was (D0-Abnormally Dry) conditions and the southeastern corner had no drought classification.  On the third week of September the northwestern corner of Petroleum County remained in (D2-Severe) conditions while the central third of the county worsened to (D1-Moderate) drought and the southern third of the county worsened to (D0-Abnormally Dry) conditions.  By the last week of September the northwestern corner of Petroleum County remained in (D2-Severe) conditions while the southern three quarters of Petroleum County worsened to (D1-Moderate) drought.

Drought in LITTLE ROCKY MOUNTAINS, MONTANA
From 13-SEP-22 00:00:00 to 30-SEP-22 23:59:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Drought Monitor

On the second week of September, all of the Little Rocky Mountains worsened to (D2-Severe) conditions.  These conditions would remain the same through the end of the month.