Long-Range Weather Forecast for Groveton, NH

August 2026 Long Range Weather Forecast for Northeast

Dates	Weather Conditions
Aug 1-6	Scattered t-storms, warm
Aug 7-10	Heavy rain north, isolated showers south; cool
Aug 11-18	Sunny, then t-storms; mild north, cool south
Aug 19-31	Isolated t-storms, mild
August	temperature 67.5° (2° above avg. north, 1° below south) precipitation 4" (2" above avg. north, 2" below south)

September 2026 Long Range Weather Forecast for Northeast

Dates	Weather Conditions
Sep 1-7	Showery, cool
Sep 8-11	Sunny, cool
Sep 12-19	Rainy periods, then sunny; cool
Sep 20-30	Showers, cool
September	temperature 59° (2° below avg.) precipitation 5.5" (2" above avg.)

12-Month Long-Range Weather Outlook

November 2025 to October 2026

Winter temperatures will be above normal, with the coldest periods in December and early January. Precipitation and snowfall will be below normal, with the snowiest periods in mid-November, early and mid-December, and early February. April and May will be warmer and drier than normal. Summer temperatures will be above normal, while rainfall will be above normal in the north and below south. The hottest periods will be in early June and early and late July. September and October will be cooler and wetter than normal.

See the complete 12-month weather forecast in The Old Farmer’s Almanac..

Weather Trend Graph

November 2025 to October 2026