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United States weather

Weather in Merrimack County, New Hampshire for August 2026

Your guide to Merrimack County weather in August - trends and predictions

    Temperatures

  • In general, the average temperature in Merrimack County at the beginning of August is 25 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 22 °C by the end of August.

    • Rain 🌧️

  • With an average of 5 rainy days, Merrimack County experiences minimal rainfall in August.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
26
Dry days
Average rainy days
5
Rainy days
Average snowy days
0
Snow days
Average temperatures
25°/14°
Temperatures
Average wind speed
12 km/h
Avg max wind
Average humidity
70 %
Avg humidity

Merrimack County Weather August

Move between months or click on a day
July
September
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Moderate rain
17°
2
Mist
26°
3
Sunny
29°
4
Sunny
31°
5
Overcast
25°
6
Overcast
22°
7
Fog
25°
8
Partly cloudy
26°
9
Sunny
28°
10
Partly cloudy
30°
11
Thundery outbreaks possible
32°
12
Partly cloudy
33°
13
Partly cloudy
31°
14
Fog
30°
15
Partly cloudy
27°
16
Fog
27°
17
Mist
31°
18
Sunny
23°
19
Overcast
20°
20
Overcast
18°
21
Mist
22°
22
Overcast
27°
23
Mist
28°
24
Overcast
25°
25
Moderate or heavy rain shower
23°
26
Partly cloudy
24°
27
Overcast
20°
28
Mist
21°
29
Moderate or heavy rain shower
22°
30
Overcast
20°
31
Sunny
24°

Temperatures trend during August in Merrimack County

See the weather trend as well as the moving average line

August weather in Merrimack County day by day

Click on a date for more information
July September
Date Weather Temperatures Rain UV More
Aug. 1 Moderate rain
Moderate rain
 17° /14° 78.2 mm 2
Aug. 2 Mist
Mist
 26° /9° 0 mm 10
Aug. 3 Sunny
Sunny
 29° /14° 0 mm 10
Aug. 4 Sunny
Sunny
 31° /18° 0 mm 10
Aug. 5 Overcast
Overcast
 25° /19° 0 mm 7
Aug. 6 Overcast
Overcast
 22° /16° 0 mm 3
Aug. 7 Fog
Fog
 25° /14° 0 mm 8
Aug. 8 Partly cloudy
Partly cloudy
 26° /14° 0 mm 10
Aug. 9 Sunny
Sunny
 28° /16° 0 mm 10
Aug. 10 Partly cloudy
Partly cloudy
 30° /15° 0 mm 10
Aug. 11 Thundery outbreaks possible
Thundery outbreaks possible
 32° /22° 0 mm 9
Aug. 12 Partly cloudy
Partly cloudy
 33° /20° 0 mm 9
Aug. 13 Partly cloudy
Partly cloudy
 31° /21° 0 mm 9
Aug. 14 Fog
Fog
 30° /21° 0 mm 6
Aug. 15 Partly cloudy
Partly cloudy
 27° /15° 0 mm 9
Aug. 16 Fog
Fog
 27° /11° 0 mm 9
Aug. 17 Mist
Mist
 31° /15° 2.8 mm 8
Aug. 18 Sunny
Sunny
 23° /11° 0 mm 9
Aug. 19 Overcast
Overcast
 20° /10° 0 mm 6
Aug. 20 Overcast
Overcast
 18° /12° 0.5 mm 2
Aug. 21 Mist
Mist
 22° /12° 0 mm 6
Aug. 22 Overcast
Overcast
 27° /11° 0 mm 8
Aug. 23 Mist
Mist
 28° /10° 0 mm 9
Aug. 24 Overcast
Overcast
 25° /16° 0 mm 6
Aug. 25 Moderate or heavy rain shower
Moderate or heavy rain shower
 23° /19° 20.5 mm 3
Aug. 26 Partly cloudy
Partly cloudy
 24° /15° 0 mm 8
Aug. 27 Overcast
Overcast
 20° /12° 0 mm 7
Aug. 28 Mist
Mist
 21° /9° 0 mm 7
Aug. 29 Moderate or heavy rain shower
Moderate or heavy rain shower
 22° /11° 4.5 mm 4
Aug. 30 Overcast
Overcast
 20° /12° 0 mm 7
Aug. 31 Sunny
Sunny
 24° /10° 0 mm 7
Next
Important Notice
Our weather forecast for Merrimack County in August is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Merrimack County forecast closer to your planned date for the most up-to-date weather information.
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Merrimack County in August - FAQ

What are the expected maximum and minimum temperatures in Merrimack County during August?

Enjoy moderate daytime temperatures of up to 25° and cooler nights around 14°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in Merrimack County during August?

Significant rainfall exceeding 106.5 mm is expected in Merrimack County during August, occurring over more than 5 days. Preparing for wet conditions is recommended in your planning.

What are the typical wind conditions in Merrimack County during August?

The average wind speed in Merrimack County during August is 12 km/h, suggesting breezy to windy conditions, depending on your activities.

August rainfall patterns in Merrimack County

Explore the daily rainfall trends and prepare for Merrimack Countys August weather 💧
Typically, Merrimack County has 5 rainy days in August with a total of 106.5 mm of rainfall.

UV exposure in Merrimack County during August

Stay informed about UV levels for safe outdoor activities throughout the month of August ☀️
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Concord
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Location coordinates Where is Merrimack County?

Get accurate weather forecasts for Merrimack County, located at latitude 43.208 and longitude -71.538. Stay updated with localized weather information tailored for Merrimack County.

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