Groton, MA Hourly Weather Forecast
Next 48 Hours
Fri, Sep 4th 2026
Skies will shift from Sunny skies to Clear conditions as the day goes on. Warming trend from 66°F to 86°. Light winds, shifting from NNW to NW at 7 mph, with humidity levels between 40% to 75%, and an avg barometric pressure of 29.77 inHg.
| Fri, Sep 4th | Temp | Humidity | Wind (mph) | Pressure (inHg) | Dew Point | Precip. |
|---|---|---|---|---|---|---|
12 PM Sunny UV: 5 |
86°F Feels 87°F |
48% | 7.4 NNW | 29.78 | 63.9°F | 2% |
1 PM SunnyUV: 4.1 |
84°F Feels 84°F |
44% | 7.6 NW | 29.76 | 59.3°F | 2% |
2 PM SunnyUV: 5.4 |
84°F Feels 84°F |
41% | 8.1 NW | 29.75 | 57.9°F | 2% |
3 PM Partly Cloudy UV: 3.8 |
84°F Feels 83°F |
42% | 8.5 NW | 29.74 | 58°F | 2% |
4 PM SunnyUV: 1.8 |
83°F Feels 79°F |
40% | 11.4 NW | 29.75 | 56.2°F | 2% |
5 PM Partly CloudyUV: 1 |
76°F Feels 75°F |
53% | 7.2 N | 29.76 | 57.7°F | 6% |
6 PM Overcast UV: 0.3 |
76°F Feels 74°F |
55% | 6.9 NNW | 29.76 | 58.3°F | 11% |
7 PM SunnyUV: 0 |
72°F Feels 73°F |
64% | 4.5 NW | 29.77 | 59.5°F | 4% |
8 PM Clear UV: 0 |
68°F Feels 68°F |
72% | 4.7 WNW | 29.79 | 58.5°F | 7% |
9 PM ClearUV: 0 |
66°F Feels 66°F |
75% | 5.8 NW | 29.8 | 58.1°F | 7% |
10 PM Overcast UV: 0 |
66°F Feels 65°F |
72% | 6.3 NW | 29.8 | 57.1°F | 19% |
11 PM ClearUV: 0 |
68°F Feels 67°F |
64% | 6 NW | 29.79 | 55.7°F | 4% |
Sat, Sep 5th 2026
Starting off scattered showers, turning Clear conditions later in the day. Temps range from 59° to 69°. Light winds, shifting from WNW to NNW at 4.9 mph, with humidity levels between 65% to 96%, and an avg barometric pressure of 29.83 inHg.
| Sat, Sep 5th | Temp | Humidity | Wind (mph) | Pressure (inHg) | Dew Point | Precip. |
|---|---|---|---|---|---|---|
12 AM ClearUV: 0 |
65°F Feels 64°F |
74% | 5.4 WNW | 29.79 | 56.7°F | 7% |
1 AM ClearUV: 0 |
63°F Feels 62°F |
78% | 5.6 WNW | 29.78 | 56.4°F | 8% |
2 AM ClearUV: 0 |
62°F Feels 61°F |
81% | 5.6 WNW | 29.77 | 56.2°F | 10% |
3 AM ClearUV: 0 |
61°F Feels 60°F |
83% | 5.4 WNW | 29.76 | 56.1°F | 11% |
4 AM ClearUV: 0 |
61°F Feels 60°F |
83% | 6.3 WNW | 29.77 | 56°F | 10% |
5 AM ClearUV: 0 |
61°F Feels 60°F |
83% | 5.4 NW | 29.77 | 55.7°F | 10% |
6 AM ClearUV: 0 |
60°F Feels 59°F |
86% | 4.5 NW | 29.78 | 55.5°F | 12% |
7 AM SunnyUV: 0.1 |
60°F Feels 59°F |
86% | 4.3 NNW | 29.79 | 55.6°F | 12% |
8 AM SunnyUV: 0.7 |
63°F Feels 60°F |
76% | 6.9 N | 29.82 | 55.1°F | 8% |
9 AM Partly CloudyUV: 1.7 |
66°F Feels 64°F |
69% | 6.7 NNE | 29.82 | 55.7°F | 8% |
10 AM Cloudy UV: 3.2 |
69°F Feels 68°F |
65% | 5.8 NNE | 29.83 | 56.4°F | 12% |
11 AM Light Rain Shower UV: 4.3 |
68°F Feels 66°F |
70% | 6.7 NE | 29.83 | 57.5°F | 33% Rain est. 0.01in |
12 PM Scattered Showers UV: 3.5 |
65°F Feels 65°F |
80% | 4.9 NE | 29.84 | 58.4°F | 34% |
1 PM Scattered ShowersUV: 2.2 |
65°F Feels 66°F |
79% | 3.6 NE | 29.83 | 58.4°F | 29% |
2 PM Light Rain ShowerUV: 2.2 |
67°F Feels 66°F |
69% | 5.6 NE | 29.84 | 56.8°F | 32% Rain est. 0.01in |
3 PM Scattered ShowersUV: 1.9 |
66°F Feels 66°F |
77% | 5.1 NE | 29.84 | 58.3°F | 29% |
4 PM Scattered ShowersUV: 1.4 |
64°F Feels 64°F |
84% | 4.3 NE | 29.85 | 58.9°F | 36% |
5 PM Scattered ShowersUV: 0.8 |
63°F Feels 63°F |
88% | 4.7 ENE | 29.87 | 59.4°F | 30% |
6 PM Scattered ShowersUV: 0.2 |
63°F Feels 63°F |
87% | 5.1 ENE | 29.89 | 58.9°F | 24% |
7 PM Scattered ShowersUV: 0 |
61°F Feels 62°F |
91% | 3.4 E | 29.89 | 58.2°F | 39% |
8 PM Cloudy UV: 0 |
60°F Feels 61°F |
92% | 2.7 NE | 29.91 | 57.7°F | 24% |
9 PM Mist UV: 0 |
59°F Feels 60°F |
96% | 3.1 N | 29.92 | 57.8°F | 38% |
10 PM OvercastUV: 0 |
60°F Feels 60°F |
93% | 3.4 N | 29.92 | 57.5°F | 32% |
11 PM OvercastUV: 0 |
59°F Feels 60°F |
94% | 3.4 NNW | 29.92 | 57.7°F | 32% |
Sun, Sep 6th 2026
Skies will shift from scattered showers to Overcast conditions as the day goes on. Temps range from 56° to 67°. Light winds from the N at 4.2 mph, as humidity fluctuates between 52% to 94%, and an avg barometric pressure of 29.98 inHg.
| Sun, Sep 6th | Temp | Humidity | Wind (mph) | Pressure (inHg) | Dew Point | Precip. |
|---|---|---|---|---|---|---|
12 AM OvercastUV: 0 |
59°F Feels 59°F |
92% | 3.8 N | 29.93 | 56.8°F | 31% |
1 AM OvercastUV: 0 |
59°F Feels 58°F |
88% | 4.7 NNW | 29.94 | 55°F | 27% |
2 AM Partly Cloudy UV: 0 |
58°F Feels 57°F |
89% | 4.3 N | 29.95 | 54.6°F | 18% |
3 AM MistUV: 0 |
56°F Feels 56°F |
94% | 4 NNW | 29.96 | 54.8°F | 38% |
4 AM OvercastUV: 0 |
57°F Feels 56°F |
88% | 4.9 N | 29.97 | 53.9°F | 29% |
5 AM OvercastUV: 0 |
57°F Feels 55°F |
84% | 5.4 N | 29.98 | 52.2°F | 26% |
6 AM OvercastUV: 0 |
57°F Feels 55°F |
83% | 4 NNW | 29.98 | 51.3°F | 26% |
7 AM OvercastUV: 0.1 |
56°F Feels 55°F |
83% | 4.3 N | 29.99 | 51.2°F | 24% |
8 AM Scattered ShowersUV: 0.6 |
58°F Feels 56°F |
77% | 5.1 N | 30 | 51.2°F | 23% |
9 AM Scattered ShowersUV: 1.6 |
58°F Feels 57°F |
77% | 3.6 NNW | 30.01 | 51.4°F | 24% |
10 AM SunnyUV: 3 |
58°F Feels 58°F |
79% | 1.8 NNW | 30 | 51.8°F | 10% |
11 AM Scattered ShowersUV: 4 |
67°F Feels 65°F |
52% | 4.5 N | 30 | 49.2°F | 17% |
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|
84°F |
29.8 inHg.
Barometer 52%
Humidity NNW 7.4mph Wind |
| Sunny | ||
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