Drought
Above normalWyoming drought
Share of state area in drought (D1-D4) or worse, week over week
Data through Oct 13, 2026 · source last checked Oct 17, 2026 · page revised Oct 16, 2026
Cite
- % in drought
About this data
- Source
- US Drought Monitor (National Drought Mitigation Center, USDA, NOAA)
- Series
- Share of area in moderate drought (D1) or worse
- Geography
- Wyoming
- Unit
- %
- Calculation
- Conditions as of the prior Tuesday
- Last observation
- Oct 13, 2026
- Update frequency
- Weekly, released Thursdays
Drought eased week over week (now 87%).
Drought coverage eased to 87% of the state, down 1 point week over week and 13 points month over month. The share remains 41 points above the 5-year median and 45 points higher than a year ago.
| Period | Current | Prior | Change |
|---|---|---|---|
| Week over week | 87% | 89% | -1 pts |
| Month over month | 87% | 100% | -13 pts |
| Year over year | 87% | 42% | +45 pts |
| vs 5-yr median | 87% | 47% | +41 pts |
| Category | Share of area in this category | At this level or worse |
|---|---|---|
| D0 abnormally dry | 12.6% | 100% |
| D1 moderate drought | 27% | 87.4% |
| D2 severe drought | 39.8% | 60.4% |
| D3 extreme drought | 20.6% | 20.6% |
| D4 exceptional drought | 0% | 0% |
Previous weeks
Week of Oct 6, 2026
Wyoming remains 89% in drought, essentially flat week over week. Month over month, conditions improved 11 percentage points from 100%. The state sits 42 percentage points above its 5-year median of 47%. Year over year, drought has worsened 46 percentage points from 42%.
Week of Sep 29, 2026
Drought in Wyoming eased to 89% of state area in D1 or worse, down 2 percentage points on the week. Month over month, the state shed 11 percentage points. Despite recent improvement, Wyoming remains 36 percentage points above its 5-year median and 45 points higher than a year ago.
Week of Sep 22, 2026
Wyoming drought coverage fell to 91% of the state, down 9 percentage points week over week. Coverage remains well above the 5-year median of 53%, and is up 42 percentage points from a year ago.
Week of Sep 8, 2026
Drought coverage in Wyoming remained at 100% as of 2026-09-08, unchanged from the prior week. Year over year, the area in moderate drought or worse has expanded 47 percentage points. Coverage stands 42 points above the 5-year median of 58%.
Wyoming drought conditions
Wyoming has 87.4% of its area in drought (D1 or worse) on the US Drought Monitor map dated Oct 13, 2026, and 100% at least abnormally dry (D0 or worse). The most severe category present is D3, extreme drought, covering 20.6% of the state.
Over the last 52 weekly maps the share in drought ranged from 31.1% (Jan 6, 2026) to 100% (Jun 23, 2026), and every one of them showed at least some drought.
This site tracks three reservoirs in Wyoming: Flaming Gorge Reservoir's water level stood at 6,005.97 feet above sea level on Oct 15, 2026, with 2.46 million acre-feet in storage (67% of capacity); Boysen Reservoir's water level stood at 4,710.83 feet above sea level on Oct 15, 2026, with 504,275 acre-feet in storage (68% of capacity); and Fontenelle Reservoir's water level stood at 6,498.15 feet above sea level on Oct 15, 2026, with 274,722 acre-feet in storage (80% of capacity). The drought map scores conditions on the land week by week, while a large reservoir carries water over from earlier years, so the two can tell different stories for a season or longer.
The Monitor sorts land into five categories, from D0, abnormally dry and not yet drought, to D4, exceptional drought, and this page counts D1 through D4 as drought. The guide to what D0 to D4 mean explains each class, who draws the weekly map and why it lags a fast-moving storm.