Hourly Weather Forecast - Merrimack, NH

12 AM
31°F
10%
10mph
SSW
Cloudy
Humidity
65%
Feels like
22°F
Dew Point
20°F
1 AM
32°F
10%
10mph
SSW
Cloudy
Humidity
65%
Feels like
23°F
Dew Point
21°F
2 AM
32°F
10%
11mph
SSW
Cloudy
Humidity
67%
Feels like
24°F
Dew Point
22°F
3 AM
32°F
10%
11mph
SW
Cloudy
Humidity
69%
Feels like
24°F
Dew Point
24°F
4 AM
32°F
10%
11mph
SW
Cloudy
Humidity
71%
Feels like
24°F
Dew Point
24°F
5 AM
33°F
10%
9mph
SW
Cloudy
Humidity
72%
Feels like
25°F
Dew Point
25°F
6 AM
33°F
10%
8mph
SSW
Cloudy
Humidity
73%
Feels like
26°F
Dew Point
25°F
7 AM
34°F
10%
7mph
SW
Cloudy
Humidity
72%
Feels like
27°F
Dew Point
26°F
7:13 AM
8 AM
35°F
10%
8mph
SW
Cloudy
Humidity
72%
Feels like
29°F
Dew Point
27°F
9 AM
37°F
10%
9mph
WSW
Cloudy
Humidity
69%
Feels like
31°F
Dew Point
28°F
10 AM
39°F
10%
11mph
WSW
Mostly Cloudy
Humidity
64%
Feels like
32°F
Dew Point
28°F
11 AM
40°F
10%
12mph
WSW
Mostly Cloudy
Humidity
59%
Feels like
33°F
Dew Point
27°F
12 PM
41°F
10%
13mph
WSW
Mostly Cloudy
Humidity
56%
Feels like
34°F
Dew Point
26°F
1 PM
41°F
10%
14mph
W
Mostly Cloudy
Humidity
54%
Feels like
33°F
Dew Point
25°F
2 PM
39°F
10%
14mph
W
Partly Cloudy
Humidity
53%
Feels like
31°F
Dew Point
24°F
3 PM
37°F
10%
13mph
W
Mostly Sunny
Humidity
54%
Feels like
28°F
Dew Point
22°F
4 PM
34°F
10%
11mph
W
Sunny
Humidity
56%
Feels like
26°F
Dew Point
20°F
4:14 PM
5 PM
32°F
10%
10mph
W
Mostly Clear
Humidity
58%
Feels like
24°F
Dew Point
19°F
6 PM
31°F
10%
9mph
W
Partly Cloudy
Humidity
58%
Feels like
23°F
Dew Point
18°F
7 PM
30°F
10%
9mph
W
Partly Cloudy
Humidity
59%
Feels like
22°F
Dew Point
17°F
8 PM
29°F
10%
9mph
WNW
Partly Cloudy
Humidity
61%
Feels like
21°F
Dew Point
17°F
9 PM
28°F
10%
9mph
WNW
Partly Cloudy
Humidity
62%
Feels like
19°F
Dew Point
17°F
10 PM
27°F
10%
9mph
WNW
Partly Cloudy
Humidity
64%
Feels like
18°F
Dew Point
16°F
11 PM
26°F
10%
9mph
WNW
Partly Cloudy
Humidity
63%
Feels like
17°F
Dew Point
16°F

Rainfall and Snowfall Totals Through Wednesday

Heavy Rain, Snow, and Winds Wallop Northwest

The atmospheric river this week continues to hit the Pacific Northwest with heavy rain, snow, and high winds.

Wednesday's Weather Outlook

Wednesday's Weather Outlook

How to Measure Snow via NWS

How To Measure Snow

Weekly Drought Map for December 11, 2025

Hit-or-Miss Precipitation Leads to Mixed Drought Results

A person standing in a snowy forest with their back to the camera. They are bundled up in a white hat and a brown jacket. (Image by StockSnap from Pixabay)

Common Cold Weather Illnesses

A strong cold-air-damming event from March 20, 2018.

Cold Air Damming - Cause And Effects

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