Drought — Eastern Hillsborough, New Hampshire

2025-12-01 to 2025-12-31 · Eastern Hillsborough, New Hampshire

Event narrative

Hillsborough County averaged 1.82 inches of precipitation in December, approximately 2.2 inches below normal. This was the 6th driest July'December stretch on record. Rural towns like Mason and Dunbarton saw a second wave of dry well reports as the winter freeze set in. The USDM on December 30th had 65% of the county in Moderate Drought (D1) and 35% in Severe Drought (D2).

Wider weather episode

December 2025 saw the state's hydrological recovery stalled by below-normal precipitation and the seasonal ground freeze. As winter took hold and frozen ground effectively halted any potential for significant groundwater recharge. Seasonal snowfall provided a surface-level coating across the state, the moisture content of the snowpack remained below normal, outside of the White Mountains and insufficient to offset the substantial long-term deficits carried over from the summer and autumn. Hydrological recovery remained at a standstill, with streamflows below normal. While surface soil moisture had seen modest gains in November, the lack of substantial December rain meant that groundwater levels remained much-below normal for the month.

Source: NOAA Storm Events Database, event_id 1301967. Narrative written by the NWS forecast office that issued the report.