Merrimack County, NH Weather Forecast
County weather hub
Sunny
Compare major city weather across Merrimack County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Sunny, with a high near 52. Northwest wind around 10 mph, with gusts as high as 25 mph. New rainfall amounts less than a tenth of an inch possible.
County Weather Overview
This county weather page brings together forecast coverage for Merrimack County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 10 of 10 mapped cities in Merrimack County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Apr 11 to Apr 16, 2026
- Latest sync
- Apr 10, 2026 8:35 AM EDT
- Forecast office
- GYX
- Source
- NOAA / NWS
Daily Outlook
This Week in Merrimack County
Tuesday looks like the warmest upcoming period in Merrimack County at 75 degrees F.
Saturday Night is the coolest period ahead with temperatures near 31 degrees F.
The strongest winds are forecast for Saturday at about 10 mph NW.
Precipitation is mentioned in 10 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 10, 2026 8:35 AM EDT
- Coverage
- 6 days
- Time zone
- America/New_York
- Forecast office
- GYX
- Radar station
- KGYX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly clear, with a low around 31. Northwest wind 0 to 10 mph, with gusts as high as 25 mph.
Partly sunny, with a high near 56. Southwest wind 0 to 5 mph.
Rain showers likely after 8pm. Cloudy, with a low around 41. Chance of precipitation is 60%.
A chance of rain showers. Mostly cloudy, with a high near 67. Chance of precipitation is 50%.
A slight chance of rain showers before 7pm. Mostly cloudy, with a low around 54.
A slight chance of rain showers after 2pm. Partly sunny, with a high near 75.
A chance of rain showers. Mostly cloudy, with a low around 52. Chance of precipitation is 40%.
A chance of rain showers. Mostly cloudy, with a high near 73. Chance of precipitation is 40%.
A chance of rain showers. Mostly cloudy, with a low around 52. Chance of precipitation is 50%.
A chance of rain showers. Partly sunny, with a high near 72. Chance of precipitation is 30%.
A slight chance of rain showers. Mostly cloudy, with a low around 47.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Apr 11
|
Sunny
|
52°F |
10 mph
NW
|
|
Saturday Night
Apr 11
|
Mostly Clear
|
31°F |
0 to 10 mph
NW
|
|
Sunday
Apr 12
|
Partly Sunny
|
56°F |
0 to 5 mph
SW
|
|
Sunday Night
Apr 12
|
Rain Showers Likely
|
41°F |
5 mph
S
|
|
Monday
Apr 13
|
Chance Rain Showers
|
67°F |
5 to 10 mph
SW
|
|
Monday Night
Apr 13
|
Slight Chance Rain Showers then Mostly Cloudy
|
54°F |
5 to 10 mph
W
|
|
Tuesday
Apr 14
|
Partly Sunny then Slight Chance Rain Showers
|
75°F |
5 mph
W
|
|
Tuesday Night
Apr 14
|
Chance Rain Showers
|
52°F |
0 to 5 mph
SE
|
|
Wednesday
Apr 15
|
Chance Rain Showers
|
73°F |
0 to 5 mph
SE
|
|
Wednesday Night
Apr 15
|
Chance Rain Showers
|
52°F |
5 mph
SW
|
|
Thursday
Apr 16
|
Chance Rain Showers
|
72°F |
5 to 10 mph
W
|
|
Thursday Night
Apr 16
|
Slight Chance Rain Showers
|
47°F |
0 to 5 mph
NW
|
Major City Forecasts
Live forecast snapshots for major cities across Merrimack County.
Coverage
Forecast coverage currently spans 10 of 10 mapped cities in Merrimack County.
Largest mapped city population in this region: 43,924.
