MERRIMACK, NH 03054 Weather Forecast & Current Conditions

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NASHUA/BOIRE FLD, NH
Current Weather

1:56 AM EDT JUN 22, 2025
Clear
70°F
Feels Like: 70°F
Dewpoint: 63°F
Rel. Hum.: 78%
Visibility: 10 miles
Wind: Calm
Pressure: 30.01 inches
Last 72 hours

Local Area Snow Depth

New Hampshire Current Weather

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MERRIMACK, NH 03054
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
OVERNIGHT
Partly cloudy. A slight chance of showers. Lows in the upper 60s. Light and variable winds. Chance of rain 20 percent.
SUNDAY
Partly sunny. Showers likely with a chance of thunderstorms in the morning, then a slight chance of showers in the afternoon. Some thunderstorms may produce gusty winds in the morning. Hot with highs in the mid 90s. Southwest winds around 10 mph, becoming west in the afternoon. Gusts up to 25 mph. Chance of rain 70 percent. Heat index values up to 103 in the afternoon.
SUNDAY NIGHT
Partly cloudy. Humid with lows in the lower 70s. Northwest winds around 10 mph in the evening, becoming light and variable. Heat index values up to 101 early in the evening.
MONDAY
Partly sunny. Hot with highs in the mid 90s. Light and variable winds. Heat index values up to 106 in the afternoon.
MONDAY NIGHT
Mostly clear. Humid with lows in the mid 70s. Light and variable winds. Heat index values up to 103 early in the evening.
TUESDAY
Mostly sunny. Hot with highs around 100.
TUESDAY NIGHT
Mostly clear. Lows in the mid 70s.
WEDNESDAY
Mostly sunny. Hot with highs around 90.
WEDNESDAY NIGHT
Partly cloudy in the evening, then mostly cloudy with a chance of showers after midnight. Lows in the lower 60s. Chance of rain 40 percent.
THURSDAY
Mostly cloudy with a 50 percent chance of showers. Highs in the lower 70s.
THURSDAY NIGHT
Mostly cloudy with a 50 percent chance of showers. Lows in the upper 50s.
FRIDAY
Mostly cloudy with a 50 percent chance of showers. Highs in the mid 70s.
FRIDAY NIGHT
Mostly cloudy with a 50 percent chance of showers. Lows in the upper 50s.

Visible Weather Satellite
MERRIMACK, NH 03054
Infrared Weather Satellite
MERRIMACK, NH 03054
NEXRAD Weather Radar
MERRIMACK, NH 03054

NASHUA/BOIRE FLD, NH 3 hourly weather forecast

weather forecast created  7:00 PM CDT  6/21/2025
Sunday
22 JUN 2025
MERRIMACK, NH 03054 weather forecast Day 1, 0 hours 2 AM 69° 69° Mostly Cloudy 38%
RAIN
.25–.5 in
0% Thunder
( 7% severe)
SSW   3 81% 63°
Low 68° MERRIMACK, NH 03054 weather forecast Day 1, 3 hours 5 AM 69° 69° Mostly Cloudy SSW   6 84% 64°
High 94° MERRIMACK, NH 03054 weather forecast Day 1, 6 hours 8 AM 74° 74° Mostly Cloudy 30%
RAIN
.5–1 in
0% Thunder
( 12% severe)
SW   7 79% 67°

Decreasing Clouds

Chance of Rain

MERRIMACK, NH 03054 weather forecast Day 1, 9 hours 11 AM 84° 88° Partly Cloudy W   10 63% 70°
MERRIMACK, NH 03054 weather forecast Day 1, 12 hours 2 PM 91° 100° Partly Cloudy 6%

0% Thunder
( 4% severe)
W   12 56% 73°
MERRIMACK, NH 03054 weather forecast Day 1, 15 hours 5 PM 92° 99° Clear WNW   10 51% 71°
MERRIMACK, NH 03054 weather forecast Day 1, 18 hours 8 PM 85° 91° Partly Cloudy 2%

0% Thunder
( 3% severe)
WNW   5 65% 72°
MERRIMACK, NH 03054 weather forecast Day 1, 21 hours 11 PM 78° 80° Partly Cloudy NW   2 76% 70°
Monday
23 JUN 2025
MERRIMACK, NH 03054 weather forecast Day 2, 0 hours 2 AM 73° 73° Partly Cloudy 2%

0% Thunder
( 0% severe)
NW   1 84% 68°
Low 69° MERRIMACK, NH 03054 weather forecast Day 2, 3 hours 5 AM 70° 70° Partly Cloudy NW   1 90% 67°
High 95° MERRIMACK, NH 03054 weather forecast Day 2, 6 hours 8 AM 76° 77° Partly Cloudy 1%

0% Thunder
( 2% severe)
ESE   1 79% 69°

Partly Cloudy



MERRIMACK, NH 03054 weather forecast Day 2, 9 hours 11 AM 85° 90° Partly Cloudy SSW   2 61% 70°
MERRIMACK, NH 03054 weather forecast Day 2, 12 hours 2 PM 92° 100° Partly Cloudy 4%

0% Thunder
( 9% severe)
SSW   3 52% 72°
MERRIMACK, NH 03054 weather forecast Day 2, 15 hours 5 PM 93° 101° Partly Cloudy SSW   5 51% 72°
MERRIMACK, NH 03054 weather forecast Day 2, 18 hours 8 PM 86° 92° Partly Cloudy 1%

0% Thunder
( 6% severe)
SSW   3 63% 72°
MERRIMACK, NH 03054 weather forecast Day 2, 21 hours 11 PM 79° 82° Partly Cloudy SW   2 77% 71°

NASHUA/BOIRE FLD, NH extended weather forecast

Tuesday
24 JUN 2025
Wednesday
25 JUN 2025
Thursday
26 JUN 2025
Friday
27 JUN 2025
Saturday
28 JUN 2025
Low 70° Low 72° Low 63° Low 58° Low 57°
High 99° High 88° High 73° High 72° High 74°
MERRIMACK, NH 03054 weather forecast Day 3 MERRIMACK, NH 03054 weather forecast Day 4 MERRIMACK, NH 03054 weather forecast Day 5 MERRIMACK, NH 03054 weather forecast Day 6 MERRIMACK, NH 03054 weather forecast Day 7
Clear
7% Rain
Partly Cloudy
9% Rain
Overcast
54% Rain
Overcast
60% Rain
Overcast
67% Rain
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