Grantham, NH Hourly Weather Forecast
Next 48 Hours
Tue, Sep 15th 2026
Overcast conditions expected later. Temps range from 55° to 59°. Light winds from the SE at 3.9 mph, while humidity ranges from 68% to 79%, and an avg barometric pressure of 30.33 inHg.
| Tue, Sep 15th | Temp | Humidity | Wind (mph) | Pressure (inHg) | Dew Point | Precip. |
|---|---|---|---|---|---|---|
9 PM Overcast UV: 0 |
57°F Feels 54°F |
72% | 3.8 SSE | 30.34 | 47.7°F | 20% |
10 PM Clear UV: 0 |
59°F Feels 57°F |
68% | 3.8 SE | 30.33 | 48.3°F | 6% |
11 PM OvercastUV: 0 |
55°F Feels 53°F |
79% | 4 SE | 30.32 | 48.4°F | 23% |
Wed, Sep 16th 2026
Expect consistent Overcast skies throughout the day. Warming trend from 52°F to 78°. Calm winds, shifting from SE to NNW at 3 mph, as humidity fluctuates between 48% to 96%, and an avg barometric pressure of 30.29 inHg.
| Wed, Sep 16th | Temp | Humidity | Wind (mph) | Pressure (inHg) | Dew Point | Precip. |
|---|---|---|---|---|---|---|
12 AM OvercastUV: 0 |
53°F Feels 52°F |
83% | 3.1 SE | 30.33 | 48.3°F | 26% |
1 AM Cloudy UV: 0 |
53°F Feels 51°F |
86% | 3.1 SE | 30.35 | 48.4°F | 22% |
2 AM CloudyUV: 0 |
52°F Feels 51°F |
88% | 3.4 SE | 30.34 | 48.4°F | 21% |
3 AM OvercastUV: 0 |
53°F Feels 51°F |
86% | 3.4 SE | 30.33 | 48.6°F | 27% |
4 AM OvercastUV: 0 |
53°F Feels 51°F |
81% | 2.9 SSE | 30.31 | 47.2°F | 24% |
5 AM OvercastUV: 0 |
53°F Feels 51°F |
80% | 2.9 SSE | 30.32 | 47.2°F | 22% |
6 AM CloudyUV: 0 |
54°F Feels 52°F |
82% | 2.5 S | 30.32 | 48.7°F | 22% |
7 AM Partly Cloudy UV: 0 |
54°F Feels 53°F |
81% | 3.4 SSE | 30.32 | 48.7°F | 13% |
8 AM Overcast UV: 0.4 |
55°F Feels 52°F |
76% | 2.7 S | 30.31 | 47°F | 19% |
9 AM Cloudy UV: 1.1 |
57°F Feels 55°F |
69% | 3.4 S | 30.32 | 47.3°F | 15% |
10 AM Sunny UV: 2.6 |
64°F Feels 62°F |
58% | 3.1 SSW | 30.31 | 48.5°F | 4% |
11 AM CloudyUV: 4.5 |
69°F Feels 68°F |
51% | 2.5 SW | 30.3 | 50.1°F | 7% |
12 PM OvercastUV: 5.4 |
72°F Feels 72°F |
49% | 1.8 WSW | 30.28 | 52.1°F | 11% |
1 PM OvercastUV: 4.7 |
72°F Feels 72°F |
51% | 1.3 NNE | 30.27 | 53°F | 10% |
2 PM SunnyUV: 4.3 |
75°F Feels 75°F |
49% | 1.8 N | 30.25 | 54.6°F | 2% |
3 PM SunnyUV: 4 |
78°F Feels 78°F |
48% | 2.7 NW | 30.23 | 56.5°F | 2% |
4 PM Partly CloudyUV: 2.3 |
77°F Feels 77°F |
50% | 4.3 WNW | 30.23 | 57.3°F | 4% |
5 PM OvercastUV: 1 |
75°F Feels 75°F |
58% | 5.6 WNW | 30.23 | 59.1°F | 13% |
6 PM OvercastUV: 0.2 |
73°F Feels 74°F |
70% | 5.6 W | 30.25 | 62.4°F | 18% |
7 PM OvercastUV: 0 |
69°F Feels 71°F |
79% | 3.6 W | 30.26 | 62.4°F | 23% |
8 PM CloudyUV: 0 |
65°F Feels 68°F |
88% | 1.8 NW | 30.28 | 61.6°F | 23% |
9 PM ClearUV: 0 |
63°F Feels 66°F |
93% | 2.2 N | 30.29 | 61.2°F | 15% |
10 PM Mist UV: 0 |
62°F Feels 64°F |
95% | 2.5 NNW | 30.29 | 60.5°F | 37% |
11 PM MistUV: 0 |
61°F Feels 63°F |
96% | 2.5 NNW | 30.3 | 59.9°F | 36% |
Thu, Sep 17th 2026
Starting off Overcast conditions, turning Misty conditions later in the day. Temps range from 58° to 67°. Calm winds, shifting from NNW to S at 1.9 mph, with humidity ranging 72% to 99%, and an avg barometric pressure of 30.22 inHg.
| Thu, Sep 17th | Temp | Humidity | Wind (mph) | Pressure (inHg) | Dew Point | Precip. |
|---|---|---|---|---|---|---|
12 AM MistUV: 0 |
60°F Feels 62°F |
96% | 2.2 NNW | 30.3 | 59.2°F | 39% |
1 AM MistUV: 0 |
60°F Feels 61°F |
97% | 2.2 NNW | 30.3 | 58.9°F | 39% |
2 AM MistUV: 0 |
60°F Feels 62°F |
97% | 1.6 NNW | 30.29 | 58.8°F | 39% |
3 AM MistUV: 0 |
60°F Feels 61°F |
97% | 1.6 NNW | 30.29 | 58.6°F | 39% |
4 AM Fog UV: 0 |
59°F Feels 61°F |
97% | 1.6 NNW | 30.28 | 58.3°F | 42% |
5 AM FogUV: 0 |
59°F Feels 60°F |
97% | 0.9 NNW | 30.27 | 57.8°F | 42% |
6 AM FogUV: 0 |
58°F Feels 60°F |
98% | 1.3 N | 30.28 | 57.6°F | 42% |
7 AM Fog UV: 0 |
58°F Feels 60°F |
98% | 0.9 ENE | 30.28 | 57.7°F | 42% |
8 AM OvercastUV: 0.5 |
59°F Feels 60°F |
92% | 0.7 NNE | 30.29 | 56.4°F | 31% |
9 AM OvercastUV: 1.3 |
62°F Feels 64°F |
84% | 0.7 SE | 30.27 | 57.1°F | 26% |
10 AM CloudyUV: 2.2 |
67°F Feels 69°F |
72% | 0.4 SE | 30.26 | 57.7°F | 17% |
11 AM OvercastUV: 2.4 |
66°F Feels 66°F |
74% | 3.8 S | 30.24 | 57.6°F | 20% |
12 PM OvercastUV: 1 |
64°F Feels 65°F |
83% | 3.4 S | 30.22 | 58.6°F | 25% |
1 PM OvercastUV: 1.3 |
66°F Feels 68°F |
77% | 2.5 S | 30.2 | 58.7°F | 22% |
2 PM Light Rain UV: 1.4 |
63°F Feels 65°F |
91% | 2.7 SSW | 30.19 | 60.5°F | 80% Rain est. 0.08in |
3 PM FogUV: 0.2 |
63°F Feels 65°F |
98% | 3.4 SSE | 30.16 | 62.4°F | 55% Rain est. 0.01in |
4 PM FogUV: 0.2 |
62°F Feels 65°F |
98% | 2 SSE | 30.13 | 61.4°F | 43% |
5 PM Light Drizzle UV: 0.2 |
62°F Feels 64°F |
98% | 1.6 SSE | 30.13 | 61.1°F | 67% Rain est. 0.02in |
6 PM Light DrizzleUV: 0 |
61°F Feels 64°F |
99% | 2 SSE | 30.12 | 61.1°F | 56% Rain est. 0.01in |
7 PM FogUV: 0 |
61°F Feels 64°F |
99% | 1.8 SSE | 30.11 | 61.1°F | 44% |
8 PM FogUV: 0 |
62°F Feels 64°F |
99% | 1.6 S | 30.11 | 61.3°F | 49% |
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|
58°F |
30.32 inHg.
Barometer 69%
Humidity SSE 3.8mph Wind |
| Cloudy | ||
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