Hourly Weather Forecast - Merrimack, NH

12 AM
27°F
0%
15mph
W
Partly Cloudy
Humidity
65%
Feels like
15°F
Dew Point
17°F
1 AM
26°F
0%
15mph
WNW
Mostly Cloudy
Humidity
61%
Feels like
14°F
Dew Point
15°F
2 AM
26°F
0%
15mph
WNW
Partly Cloudy
Humidity
57%
Feels like
14°F
Dew Point
13°F
3 AM
25°F
0%
14mph
WNW
Partly Cloudy
Humidity
55%
Feels like
13°F
Dew Point
11°F
4 AM
24°F
0%
14mph
WNW
Mostly Clear
Humidity
53%
Feels like
12°F
Dew Point
10°F
5 AM
24°F
0%
13mph
WNW
Mostly Clear
Humidity
52%
Feels like
12°F
Dew Point
9°F
6 AM
23°F
0%
11mph
WNW
Clear
Humidity
51%
Feels like
11°F
Dew Point
8°F
7 AM
23°F
0%
10mph
WNW
Clear
Humidity
50%
Feels like
12°F
Dew Point
7°F
7:12 AM
8 AM
24°F
0%
9mph
WNW
Sunny
Humidity
48%
Feels like
14°F
Dew Point
7°F
9 AM
25°F
0%
9mph
WNW
Sunny
Humidity
44%
Feels like
16°F
Dew Point
7°F
10 AM
27°F
0%
8mph
WNW
Sunny
Humidity
41%
Feels like
19°F
Dew Point
6°F
11 AM
29°F
0%
7mph
WNW
Partly Cloudy
Humidity
38%
Feels like
21°F
Dew Point
6°F
12 PM
30°F
0%
7mph
WNW
Mostly Cloudy
Humidity
36%
Feels like
22°F
Dew Point
6°F
1 PM
30°F
10%
7mph
W
Cloudy
Humidity
35%
Feels like
23°F
Dew Point
6°F
2 PM
30°F
10%
7mph
W
Cloudy
Humidity
37%
Feels like
23°F
Dew Point
7°F
3 PM
29°F
10%
6mph
W
Cloudy
Humidity
39%
Feels like
23°F
Dew Point
8°F
4 PM
29°F
10%
5mph
WSW
Mostly Cloudy
Humidity
41%
Feels like
23°F
Dew Point
8°F
4:14 PM
5 PM
28°F
10%
5mph
SW
Mostly Cloudy
Humidity
44%
Feels like
22°F
Dew Point
9°F
6 PM
27°F
10%
6mph
SSW
Mostly Cloudy
Humidity
49%
Feels like
21°F
Dew Point
10°F
7 PM
27°F
10%
7mph
SSW
Cloudy
Humidity
52%
Feels like
19°F
Dew Point
11°F
8 PM
27°F
10%
8mph
S
Cloudy
Humidity
56%
Feels like
19°F
Dew Point
13°F
9 PM
27°F
10%
8mph
S
Cloudy
Humidity
58%
Feels like
18°F
Dew Point
14°F
10 PM
27°F
10%
9mph
S
Cloudy
Humidity
60%
Feels like
18°F
Dew Point
15°F
11 PM
28°F
20%
9mph
S
Cloudy
Humidity
63%
Feels like
19°F
Dew Point
17°F

Rainfall Totals Through Wednesday A.M.

Heavy Rain Returns to Deluge Pacific Northwest

Another atmospheric river will hit the Pacific Northwest with heavy rain and high winds.

Monday's Weather Outlook

Today'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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