Currently: 59 °F. Scattered clouds. (Weather station: Manchester Airport, USA). See more current weatherPast Weather in Merrimack — Graph
°F
Time
Wind
(mph)
(mph)
Temp
(°F)
(°F)
50
54
58
62
66
70
74
78
82
86
90
94
Wed, Aug 6
Lo:63
6 am
Hi:77
4
Lo:75
12 pm
Hi:81
6
Lo:66
6 pm
Hi:73
1
Thu, Aug 7
Lo:61
12 am
Hi:64
0
Lo:63
6 am
Hi:81
2
Lo:81
12 pm
Hi:82
7
Lo:66
6 pm
Hi:79
6
Fri, Aug 8
Lo:57
12 am
Hi:64
1
Lo:61
6 am
Hi:81
3
Lo:82
12 pm
Hi:84
8
Lo:64
6 pm
Hi:79
6
Sat, Aug 9
Lo:55
12 am
Hi:64
1
Lo:59
6 am
Hi:81
1
Lo:82
12 pm
Hi:86
8
Lo:63
6 pm
Hi:79
3
Sun, Aug 10
Lo:59
12 am
Hi:63
1
Lo:63
6 am
Hi:84
1
Lo:88
12 pm
Hi:91
5
Lo:73
6 pm
Hi:88
7
Mon, Aug 11
Lo:64
12 am
Hi:72
0
Lo:66
6 am
Hi:90
1
Lo:93
12 pm
Hi:95
6
Lo:73
6 pm
Hi:90
4
Tue, Aug 12
Lo:64
12 am
Hi:70
0
Lo:66
6 am
Hi:91
1
Lo:91
12 pm
Hi:93
7
Lo:73
6 pm
Hi:90
7
Wed, Aug 13
Lo:64
12 am
Hi:73
2
Lo:68
6 am
Hi:90
4
Lo:73
12 pm
Hi:95
10
Lo:72
6 pm
Hi:73
6
Thu, Aug 14
Lo:70
12 am
Hi:72
0
Lo:72
6 am
Hi:86
3
Lo:84
12 pm
Hi:90
8
Lo:73
6 pm
Hi:82
5
Fri, Aug 15
Lo:66
12 am
Hi:72
6
Lo:66
6 am
Hi:79
9
Lo:79
12 pm
Hi:81
6
Lo:61
6 pm
Hi:77
1
Sat, Aug 16
Lo:55
12 am
Hi:59
0
Lo:57
6 am
Hi:82
2
Lo:82
12 pm
Hi:86
9
Lo:72
6 pm
Hi:81
7
Sun, Aug 17
Lo:66
12 am
Hi:72
2
Lo:66
6 am
Hi:84
4
Lo:88
12 pm
Hi:91
10
Lo:68
6 pm
Hi:84
14
Mon, Aug 18
Lo:63
12 am
Hi:64
9
Lo:61
6 am
Hi:70
7
Lo:73
12 pm
Hi:75
5
Lo:57
6 pm
Hi:72
3
Tue, Aug 19
Lo:52
12 am
Hi:55
0
Lo:55
6 am
Hi:70
2
Lo:70
12 pm
Hi:72
6
Lo:61
6 pm
Hi:70
4
Wed, Aug 20
Lo:57
12 am
Hi:61
2
Lo:59
6 am
Hi:61
1
Lo:61
12 pm
Hi:61
2
Lo:55
6 pm
Hi:61
0
Thu, Aug 21
Lo:54
12 am
Hi:55
2
Lo:55
6 am
Hi:55
4
Wednesday, August 6, 2025, 6:00 am — 12:00 pm
77 / 63 °F
Mostly cloudy.
Humidity: 61%
Barometer: 30.47 "Hg
N
Wind: 4.35 mph
Merrimack Temperature Yesterday
Maximum temperature yesterday: 61 °F (at 1:53 pm)
Minimum temperature yesterday: 56 °F (at 11:53 pm)
Average temperature yesterday: 59 °F
High & Low Weather Summary for the Past Weeks
| Temperature | Humidity | Pressure | |
|---|---|---|---|
| High | 95 °F (Aug 11, 2:53 pm) | 96% (Aug 16, 4:53 am) | 30.47 "Hg (Aug 16, 4:53 am) |
| Low | 51 °F (Aug 19, 4:53 am) | 24% (Aug 12, 4:53 pm) | 29.78 "Hg (Aug 13, 4:53 pm) |
| Average | 72 °F | 63% | 30.15 "Hg |
| * Reported Aug 6 6:53 am — Aug 21 6:53 am, Merrimack. Weather by CustomWeather, © 2025 | |||
Note: Actual official high and low records may vary slightly from our data, if they occured in-between our weather recording intervals... More about our weather records
Merrimack Weather History for the Previous 24 Hours
Scroll right to see more
| Conditions | Comfort | |||||||
|---|---|---|---|---|---|---|---|---|
| Time | Temp | Weather | Wind | Humidity | Barometer | Visibility | ||
| 6:53 am Thu, Aug 21 |  | 56 °F | Partly sunny. | 5 mph | ↑ | 81% | 30.15 "Hg | 10 mi |
| 5:53 am |  | 54 °F | Passing clouds. | 3 mph | ↑ | 86% | 30.14 "Hg | 10 mi |
| 4:53 am | | 53 °F | Passing clouds. | 5 mph | ↑ | 89% | 30.15 "Hg | 10 mi |
| 3:53 am | | 54 °F | Passing clouds. | No wind | ↑ | 86% | 30.16 "Hg | 10 mi |
| 2:53 am | | 55 °F | Passing clouds. | 5 mph | ↑ | 87% | 30.15 "Hg | 10 mi |
| 1:53 am | | 55 °F | Passing clouds. | No wind | ↑ | 90% | 30.17 "Hg | 10 mi |
| 12:53 am | | 56 °F | Passing clouds. | No wind | ↑ | 90% | 30.18 "Hg | 10 mi |
| 11:53 pm Wed, Aug 20 |  | 56 °F | Partly cloudy. | No wind | ↑ | 90% | 30.19 "Hg | 10 mi |
| 10:53 pm | | 58 °F | Partly cloudy. | No wind | ↑ | 87% | 30.19 "Hg | 10 mi |
| 9:53 pm |  | 57 °F | Mostly cloudy. | No wind | ↑ | 90% | 30.21 "Hg | 10 mi |
| 8:53 pm | | 58 °F | Passing clouds. | No wind | ↑ | 84% | 30.21 "Hg | 10 mi |
| 7:53 pm | | 58 °F | Passing clouds. | No wind | ↑ | 84% | 30.19 "Hg | 10 mi |
| 6:53 pm | | 60 °F | Broken clouds. | No wind | ↑ | 72% | 30.19 "Hg | 10 mi |
| 5:53 pm | | 61 °F | Partly sunny. | 3 mph | ↑ | 75% | 30.19 "Hg | 10 mi |
| 4:53 pm |  | 61 °F | Overcast. | 3 mph | ↑ | 78% | 30.20 "Hg | 10 mi |
| 3:53 pm |  | 61 °F | Light rain. More clouds than sun. | No wind | ↑ | 81% | 30.20 "Hg | 10 mi |
| 2:53 pm | | 60 °F | Light rain. Overcast. | N/A | ↑ | 78% | 30.22 "Hg | 10 mi |
| 1:53 pm | | 61 °F | Overcast. | No wind | ↑ | 75% | 30.21 "Hg | 10 mi |
| 12:53 pm | | 60 °F | Light rain. Overcast. | 3 mph | ↑ | 75% | 30.21 "Hg | 10 mi |
| 11:53 am | | 60 °F | Light rain. Overcast. | 3 mph | ↑ | 78% | 30.22 "Hg | 10 mi |
| 10:53 am | | 60 °F | Light rain. Overcast. | 5 mph | ↑ | 86% | 30.24 "Hg | 10 mi |
| 9:53 am | | 60 °F | Mostly cloudy. | No wind | ↑ | 86% | 30.22 "Hg | 10 mi |
| 8:53 am | | 59 °F | Light rain. Overcast. | No wind | ↑ | 93% | 30.20 "Hg | 9 mi |
| Weather by CustomWeather, © 2025 | ||||||||