Current Conditions

Merrimack, New Hampshire

67°F20°C

Partly Cloudy

Wind

NNW 4 mph6 km/h

Humidity

70%

Cloud Cover

81%

As of Tuesday, September 8, 2026 at 8:42 PM EDT

Today's Outlook

Night

Overcast, with a low around 61°F16°C. Light wind from the NNW around 4 mph7 km/h.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Partly Cloudy	High 76°F24°C	Low 61°F16°C	Precip 0 in0.1 mm4%	Cloud 72%	Wind NNW 5 mph9 km/h	Tuesday: Mostly cloudy and warm, with a high of 76°F24°C. Breezy from the NNW at 7 mph11 km/h. Tuesday Night: Overcast, with a low around 61°F16°C. Light wind from the NNW around 4 mph7 km/h.
Light Rain	High 76°F25°C	Low 56°F13°C	Precip 0.11 in2.8 mm88%	Cloud 97%	Wind S 6 mph10 km/h	Wednesday: Overcast and warm, with a high of 76°F25°C and morning low of 59°F15°C. Breezy from the S at 6 to 8 mph9 to 13 km/h. 13% chance of drizzle in the afternoon. Wednesday Night: Overcast, with a low around 56°F13°C. Breezy from the SSW at 7 to 11 mph11 to 18 km/h. 88% chance of light rain in the evening.
Rain	High 85°F29°C	Low 70°F21°C	Precip 0.22 in5.7 mm95%	Cloud 67%	Wind W 11 mph18 km/h	Thursday: Mostly cloudy and warm, with a high of 85°F29°C and morning low of 72°F22°C. Breezy from the W at 12 to 14 mph19 to 23 km/h. 31% chance of showers in the morning. Thursday Night: Overcast, with a low around 70°F21°C. Breezy from the WSW at 11 to 13 mph17 to 21 km/h. 95% chance of rain overnight.
Clear	High 74°F23°C	Low 56°F14°C	Precip 0 in0 mm—	Cloud 11%	Wind NW 7 mph11 km/h	Friday: Mostly clear and warm, with a high of 74°F23°C and morning low of 62°F17°C. Breezy from the NW at 8 to 9 mph13 to 15 km/h. Dry air. Friday Night: Mostly clear, with a low around 56°F14°C. Light wind from the NW around 6 mph9 km/h.
Drizzle	High 76°F24°C	Low 49°F9°C	Precip 0.02 in0.5 mm22%	Cloud 63%	Wind S 5 mph8 km/h	Saturday: Mostly cloudy and warm, with a high of 76°F24°C and morning low of 54°F12°C. Light wind from the S around 5 mph8 km/h. Dry air. Saturday Night: Mostly cloudy, with a low around 49°F9°C. Breezy from the SSW at 5 to 7 mph8 to 12 km/h. 22% chance of drizzle overnight.
Rain	High 76°F24°C	Low 63°F17°C	Precip 0.5 in12.6 mm70%	Cloud 79%	Wind SSW 6 mph10 km/h	Sunday: Overcast and warm, with a high of 76°F24°C and morning low of 65°F18°C. Light wind from the SSW around 6 mph10 km/h. 70% chance of rain throughout the day. Humid. Sunday Night: Mostly cloudy, with a low around 63°F17°C. Breezy from the SSW at 7 mph10 km/h. 67% chance of light rain throughout the night.
Drizzle	High 73°F23°C	Low 56°F13°C	Precip 0.03 in0.8 mm12%	Cloud 30%	Wind NW 8 mph13 km/h	Monday: Partly cloudy and warm, with a high of 73°F23°C and morning low of 63°F17°C. Breezy from the NW at 9 to 10 mph14 to 16 km/h. Monday Night: Partly cloudy, with a low around 56°F13°C. Breezy from the NW at 7 to 8 mph11 to 12 km/h. 12% chance of drizzle overnight.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	TuesdaySep 8	76°F24°C	61°F16°C	0 in0.1 mm· 4%	72%	Partly Cloudy	NNW 5 mph9 km/h
DayMostly cloudy and warm, with a high of 76°F24°C. Breezy from the NNW at 7 mph11 km/h. NightOvercast, with a low around 61°F16°C. Light wind from the NNW around 4 mph7 km/h.
	WednesdaySep 9	76°F25°C	56°F13°C	0.11 in2.8 mm· 88%	97%	Light Rain	S 6 mph10 km/h
DayOvercast and warm, with a high of 76°F25°C and morning low of 59°F15°C. Breezy from the S at 6 to 8 mph9 to 13 km/h. 13% chance of drizzle in the afternoon. NightOvercast, with a low around 56°F13°C. Breezy from the SSW at 7 to 11 mph11 to 18 km/h. 88% chance of light rain in the evening.
	ThursdaySep 10	85°F29°C	70°F21°C	0.22 in5.7 mm· 95%	67%	Rain	W 11 mph18 km/h
DayMostly cloudy and warm, with a high of 85°F29°C and morning low of 72°F22°C. Breezy from the W at 12 to 14 mph19 to 23 km/h. 31% chance of showers in the morning. NightOvercast, with a low around 70°F21°C. Breezy from the WSW at 11 to 13 mph17 to 21 km/h. 95% chance of rain overnight.
	FridaySep 11	74°F23°C	56°F14°C	0 in0 mm· —	11%	Clear	NW 7 mph11 km/h
DayMostly clear and warm, with a high of 74°F23°C and morning low of 62°F17°C. Breezy from the NW at 8 to 9 mph13 to 15 km/h. Dry air. NightMostly clear, with a low around 56°F14°C. Light wind from the NW around 6 mph9 km/h.
	SaturdaySep 12	76°F24°C	49°F9°C	0.02 in0.5 mm· 22%	63%	Drizzle	S 5 mph8 km/h
DayMostly cloudy and warm, with a high of 76°F24°C and morning low of 54°F12°C. Light wind from the S around 5 mph8 km/h. Dry air. NightMostly cloudy, with a low around 49°F9°C. Breezy from the SSW at 5 to 7 mph8 to 12 km/h. 22% chance of drizzle overnight.
	SundaySep 13	76°F24°C	63°F17°C	0.5 in12.6 mm· 70%	79%	Rain	SSW 6 mph10 km/h
DayOvercast and warm, with a high of 76°F24°C and morning low of 65°F18°C. Light wind from the SSW around 6 mph10 km/h. 70% chance of rain throughout the day. Humid. NightMostly cloudy, with a low around 63°F17°C. Breezy from the SSW at 7 mph10 km/h. 67% chance of light rain throughout the night.
	MondaySep 14	73°F23°C	56°F13°C	0.03 in0.8 mm· 12%	30%	Drizzle	NW 8 mph13 km/h
DayPartly cloudy and warm, with a high of 73°F23°C and morning low of 63°F17°C. Breezy from the NW at 9 to 10 mph14 to 16 km/h. NightPartly cloudy, with a low around 56°F13°C. Breezy from the NW at 7 to 8 mph11 to 12 km/h. 12% chance of drizzle overnight.
	TuesdaySep 15	73°F23°C	50°F10°C	0 in0.1 mm· 3%	42%	Partly Cloudy	SSW 6 mph10 km/h
DayPartly cloudy and warm, with a high of 73°F23°C and morning low of 54°F12°C. Breezy from the SSW at 6 to 7 mph9 to 12 km/h. Dry air. NightPartly cloudy, with a low around 50°F10°C. Breezy from the SW at 6 to 8 mph10 to 13 km/h.
	WednesdaySep 16	79°F26°C	61°F16°C	0.07 in1.8 mm· 16%	54%	Drizzle	WSW 7 mph11 km/h
DayMostly cloudy and warm, with a high of 79°F26°C and morning low of 64°F18°C. Breezy from the WSW at 7 mph11 km/h. 15% chance of drizzle throughout the day. NightMostly cloudy, with a low around 61°F16°C. Breezy from the SW at 7 to 8 mph11 to 12 km/h. 16% chance of drizzle throughout the night.
	ThursdaySep 17	76°F24°C	61°F16°C	0.07 in1.7 mm· 11%	59%	Drizzle	SW 5 mph9 km/h
DayMostly cloudy and warm, with a high of 76°F24°C and morning low of 63°F17°C. Light wind from the ESE around 5 mph9 km/h. 11% chance of drizzle throughout the day. NightMostly cloudy, with a low around 61°F16°C. Light wind from the WSW around 6 mph9 km/h.
	FridaySep 18	77°F25°C	62°F17°C	0.11 in2.9 mm· 21%	61%	Showers	WSW 7 mph11 km/h
DayMostly cloudy and warm, with a high of 77°F25°C and morning low of 64°F18°C. Breezy from the WSW at 7 to 8 mph11 to 13 km/h. 21% chance of showers throughout the day. NightMostly cloudy, with a low around 62°F17°C. Breezy from the WSW at 7 mph11 km/h. 19% chance of drizzle throughout the night.
	SaturdaySep 19	74°F23°C	60°F15°C	0.11 in2.8 mm· 27%	51%	Showers	W 7 mph11 km/h
DayMostly cloudy and warm, with a high of 74°F23°C and morning low of 62°F17°C. Breezy from the W at 7 to 8 mph11 to 12 km/h. 27% chance of drizzle throughout the day. NightMostly cloudy, with a low around 60°F15°C. Breezy from the W at 7 mph11 km/h. 23% chance of showers throughout the night.
	SundaySep 20	68°F20°C	55°F13°C	0.12 in3.1 mm· 19%	55%	Drizzle	WNW 7 mph11 km/h
DayMostly cloudy and warm, with a high of 68°F20°C and morning low of 57°F14°C. Breezy from the WNW at 7 mph11 km/h. 19% chance of drizzle throughout the day. Dry air. NightMostly cloudy, with a low around 55°F13°C. Breezy from the WNW at 6 to 7 mph10 to 11 km/h. 16% chance of drizzle throughout the night.
	MondaySep 21	66°F19°C	51°F11°C	0.12 in3.1 mm· 20%	54%	Showers	WNW 7 mph11 km/h
DayMostly cloudy and mild, with a high of 66°F19°C and morning low of 53°F12°C. Breezy from the NW at 7 mph11 km/h. 17% chance of showers throughout the day. Dry air. NightMostly cloudy, with a low around 51°F11°C. Light wind from the WNW around 6 mph10 km/h. 20% chance of drizzle throughout the night.
	TuesdaySep 22	67°F20°C	50°F10°C	0.1 in2.5 mm· 14%	49%	Drizzle	WNW 6 mph10 km/h
DayMostly cloudy and mild, with a high of 67°F20°C and morning low of 53°F11°C. Light wind from the NW around 6 mph10 km/h. 14% chance of drizzle throughout the day. Dry air. NightPartly cloudy, with a low around 50°F10°C. Light wind from the WNW around 6 mph10 km/h. 13% chance of drizzle throughout the night.

Nearby Cities

Bedford6 mi9 km Nashua7 mi11 km Derry8 mi14 km Manchester9 mi15 km Derry Village9 mi15 km Salem16 mi25 km

About This Forecast

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Coordinates: 42.8651°N, 71.4934°W·Elevation: 47m·Timezone: America/New_York·Population: 26,726