Current Conditions

Merrimack, New Hampshire

80°F27°C

Clear

Wind

WNW 7 mph11 km/h

Humidity

27%

Cloud Cover

37%

As of Thursday, July 23, 2026 at 4:59 PM EDT

Today's Outlook

Day

Partly cloudy and warm, with a high of 80°F27°C. Breezy from the WNW at 7 to 8 mph12 to 12 km/h. Dry air.

Night

Mostly clear, with a low around 63°F17°C. Light wind from the W around 3 mph5 km/h.

7-Day Forecast

Day	Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
ThursdayJul 23	Clear	High 80°F27°C	Low 63°F17°C	Precip 0 in0 mm—	Cloud 17%	Wind WNW 5 mph8 km/h	Thursday: Partly cloudy and warm, with a high of 80°F27°C. Breezy from the WNW at 7 to 8 mph12 to 12 km/h. Dry air. Thursday Night: Mostly clear, with a low around 63°F17°C. Light wind from the W around 3 mph5 km/h.
FridayJul 24	Clear	High 85°F29°C	Low 54°F12°C	Precip 0 in0 mm—	Cloud 8%	Wind S 4 mph6 km/h	Friday: Mostly clear and warm, with a high of 85°F29°C and morning low of 67°F19°C. Light wind from the S around 3 mph4 km/h. Dry air. Friday Night: Mostly clear, with a low around 54°F12°C. Breezy from the S at 5 to 7 mph8 to 12 km/h.
SaturdayJul 25	Clear	High 83°F28°C	Low 56°F14°C	Precip 0 in0 mm—	Cloud 11%	Wind SE 5 mph8 km/h	Saturday: Mostly clear and warm, with a high of 83°F28°C and morning low of 67°F19°C. Breezy from the ESE at 5 to 8 mph8 to 13 km/h. Saturday Night: Mostly clear, with a low around 56°F14°C. Light wind from the S around 4 mph7 km/h.
SundayJul 26	Clear	High 82°F28°C	Low 55°F13°C	Precip 0 in0.1 mm1%	Cloud 21%	Wind ESE 4 mph6 km/h	Sunday: Mostly clear and warm, with a high of 82°F28°C and morning low of 65°F18°C. Light wind from the E around 4 mph6 km/h. Sunday Night: Mostly clear, with a low around 55°F13°C. Light wind from the SE around 4 mph6 km/h.
MondayJul 27	Showers	High 85°F30°C	Low 58°F15°C	Precip 0.07 in1.7 mm40%	Cloud 43%	Wind SSE 4 mph7 km/h	Monday: Partly cloudy and warm, with a high of 85°F30°C and morning low of 67°F19°C. Light wind from the SSE around 4 mph6 km/h. 40% chance of showers in the afternoon. Monday Night: Partly cloudy, with a low around 58°F15°C. Light wind from the S around 4 mph7 km/h. 29% chance of showers in the evening.
TuesdayJul 28	Rain	High 77°F25°C	Low 66°F19°C	Precip 0.51 in12.9 mm91%	Cloud 86%	Wind SSE 5 mph9 km/h	Tuesday: Overcast and warm, with a high of 77°F25°C and morning low of 69°F21°C. Light wind from the SSE around 6 mph9 km/h. 91% chance of rain throughout the day. Humid. Tuesday Night: Overcast, with a low around 66°F19°C. Light wind from the SSE around 5 mph8 km/h. 75% chance of light rain throughout the night.
WednesdayJul 29	Light Rain	High 75°F24°C	Low 66°F19°C	Precip 0.52 in13.2 mm62%	Cloud 76%	Wind N 6 mph10 km/h	Wednesday: Mostly cloudy and warm, with a high of 75°F24°C and morning low of 68°F20°C. Breezy from the N at 7 mph11 km/h. 62% chance of light rain throughout the day. Wednesday Night: Mostly cloudy, with a low around 66°F19°C. Light wind from the N around 6 mph10 km/h. 52% chance of light rain throughout the night.

15-Day Forecast

	Day	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Condition	Wind (mph)
	ThursdayJul 23	80°F27°C	63°F17°C	0 in0 mm· —	17%	Clear	WNW 5 mph8 km/h
DayPartly cloudy and warm, with a high of 80°F27°C. Breezy from the WNW at 7 to 8 mph12 to 12 km/h. Dry air. NightMostly clear, with a low around 63°F17°C. Light wind from the W around 3 mph5 km/h.
	FridayJul 24	85°F29°C	54°F12°C	0 in0 mm· —	8%	Clear	S 4 mph6 km/h
DayMostly clear and warm, with a high of 85°F29°C and morning low of 67°F19°C. Light wind from the S around 3 mph4 km/h. Dry air. NightMostly clear, with a low around 54°F12°C. Breezy from the S at 5 to 7 mph8 to 12 km/h.
	SaturdayJul 25	83°F28°C	56°F14°C	0 in0 mm· —	11%	Clear	SE 5 mph8 km/h
DayMostly clear and warm, with a high of 83°F28°C and morning low of 67°F19°C. Breezy from the ESE at 5 to 8 mph8 to 13 km/h. NightMostly clear, with a low around 56°F14°C. Light wind from the S around 4 mph7 km/h.
	SundayJul 26	82°F28°C	55°F13°C	0 in0.1 mm· 1%	21%	Clear	ESE 4 mph6 km/h
DayMostly clear and warm, with a high of 82°F28°C and morning low of 65°F18°C. Light wind from the E around 4 mph6 km/h. NightMostly clear, with a low around 55°F13°C. Light wind from the SE around 4 mph6 km/h.
	MondayJul 27	85°F30°C	58°F15°C	0.07 in1.7 mm· 40%	43%	Showers	SSE 4 mph7 km/h
DayPartly cloudy and warm, with a high of 85°F30°C and morning low of 67°F19°C. Light wind from the SSE around 4 mph6 km/h. 40% chance of showers in the afternoon. NightPartly cloudy, with a low around 58°F15°C. Light wind from the S around 4 mph7 km/h. 29% chance of showers in the evening.
	TuesdayJul 28	77°F25°C	66°F19°C	0.51 in12.9 mm· 91%	86%	Rain	SSE 5 mph9 km/h
DayOvercast and warm, with a high of 77°F25°C and morning low of 69°F21°C. Light wind from the SSE around 6 mph9 km/h. 91% chance of rain throughout the day. Humid. NightOvercast, with a low around 66°F19°C. Light wind from the SSE around 5 mph8 km/h. 75% chance of light rain throughout the night.
	WednesdayJul 29	75°F24°C	66°F19°C	0.52 in13.2 mm· 62%	76%	Light Rain	N 6 mph10 km/h
DayMostly cloudy and warm, with a high of 75°F24°C and morning low of 68°F20°C. Breezy from the N at 7 mph11 km/h. 62% chance of light rain throughout the day. NightMostly cloudy, with a low around 66°F19°C. Light wind from the N around 6 mph10 km/h. 52% chance of light rain throughout the night.
	ThursdayJul 30	79°F26°C	63°F17°C	0.15 in3.8 mm· 33%	51%	Showers	NW 6 mph10 km/h
DayMostly cloudy and warm, with a high of 79°F26°C and morning low of 67°F20°C. Breezy from the NW at 7 mph11 km/h. 33% chance of showers throughout the day. NightPartly cloudy, with a low around 63°F17°C. Light wind from the NW around 6 mph9 km/h. 30% chance of showers throughout the night.
	FridayJul 31	83°F28°C	62°F17°C	0.06 in1.5 mm· 18%	42%	Drizzle	W 5 mph9 km/h
DayPartly cloudy and warm, with a high of 83°F28°C and morning low of 69°F20°C. Light wind from the WNW around 6 mph9 km/h. 18% chance of drizzle throughout the day. NightPartly cloudy, with a low around 62°F17°C. Light wind from the W around 5 mph9 km/h. 11% chance of drizzle throughout the night.
	SaturdayAug 1	86°F30°C	64°F18°C	0.07 in1.7 mm· 24%	45%	Drizzle	WSW 6 mph9 km/h
DayPartly cloudy and warm, with a high of 86°F30°C and morning low of 70°F21°C. Light wind from the WSW around 6 mph9 km/h. 24% chance of drizzle throughout the day. NightPartly cloudy, with a low around 64°F18°C. Light wind from the SW around 5 mph9 km/h. 19% chance of drizzle throughout the night.
	SundayAug 2	85°F29°C	66°F19°C	0.14 in3.6 mm· 40%	53%	Showers	WSW 5 mph9 km/h
DayMostly cloudy and warm, with a high of 85°F29°C and morning low of 71°F22°C. Light wind from the WSW around 5 mph8 km/h. 40% chance of showers throughout the day. NightMostly cloudy, with a low around 66°F19°C. Light wind from the SW around 5 mph9 km/h. 24% chance of drizzle throughout the night.
	MondayAug 3	86°F30°C	66°F19°C	0.09 in2.3 mm· 34%	47%	Showers	WSW 6 mph9 km/h
DayPartly cloudy and hot, with a high of 86°F30°C and morning low of 72°F22°C. Breezy from the WSW at 6 to 7 mph10 to 11 km/h. 34% chance of showers throughout the day. NightPartly cloudy, with a low around 66°F19°C. Light wind from the WSW around 6 mph9 km/h. 18% chance of drizzle throughout the night.
	TuesdayAug 4	86°F30°C	67°F19°C	0.11 in2.9 mm· 30%	58%	Showers	SW 6 mph9 km/h
DayMostly cloudy and hot, with a high of 86°F30°C and morning low of 72°F22°C. Breezy from the WSW at 6 to 7 mph9 to 11 km/h. 30% chance of showers throughout the day. NightMostly cloudy, with a low around 67°F19°C. Light wind from the SW around 6 mph9 km/h. 18% chance of drizzle throughout the night.
	WednesdayAug 5	86°F30°C	68°F20°C	0.14 in3.6 mm· 34%	59%	Showers	SW 6 mph10 km/h
DayMostly cloudy and warm, with a high of 86°F30°C and morning low of 72°F22°C. Breezy from the SW at 6 to 7 mph10 to 12 km/h. 34% chance of showers throughout the day. NightMostly cloudy, with a low around 68°F20°C. Light wind from the SW around 6 mph9 km/h. 20% chance of showers throughout the night.
	ThursdayAug 6	84°F29°C	68°F20°C	0.16 in4 mm· 39%	65%	Showers	WSW 6 mph9 km/h
DayMostly cloudy and warm, with a high of 84°F29°C and morning low of 72°F22°C. Breezy from the WSW at 6 to 7 mph10 to 11 km/h. 39% chance of showers throughout the day. NightMostly cloudy, with a low around 68°F20°C. Light wind from the WSW around 6 mph9 km/h. 25% 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

This forecast is powered by WeatherMesh, the world's most advanced and accurate weather model powered by AI. WeatherMesh is built on proprietary data from WindBorne's Global Sounding Balloon constellation — the world's largest fleet of autonomous, long-duration weather balloons — collecting observations across 100% of Earth, including over oceans and remote regions where no other data exists.

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