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Groton CT Weather - Clear - 66°F
Clear
66°F
Updated 1:47 pm
Feels Like 59°F
Humidity 54%
Wind VRB 5 mph
Barometer  30.2 in
Dew Point 49°F
Groton CT Weather - Clear - 19°C
Clear
19°C
Updated 1:47 pm
Feels Like 15°C
Humidity 54%
Wind VRB 8 km/h
Barometer  102.3 kPa
Dew Point 9°C
Groton, CT Weather and Current Conditionsgroton ct weather forecast

Groton, CT Weather Forecast

Groton Connecticut WeatherGroton, Connecticut Weather Weather Forecast
14 day API weather forecast for Groton, Connecticut. Note: The 7-day weather forecast for Groton, CT is the most reliable and accurate weather forecast. This model should only be used as a likely scenario. It is difficult to predict weather more than 7 days ahead.
Groton, CT Weather Forecast Dated: 147 PM Sat Sep 19 2026
Expect a cool pattern with more clouds than sun and occasional showers over the coming period. generally humid conditions and a stable pattern will dominate.

Saturday, September 19, 2026

Mid-Morning
Groton Weather - 2026-09-19 - Morning - Cloudy
60°F 15°C
Cloudy
Mid-Afternoon
Groton Weather - 2026-09-19 - Afternoon - Overcast
64°F 18°C
Overcast
Early-Evening
Groton Weather - 2026-09-19 - Evening - Overcast
64°F 18°C
Overcast
Refreshing around 64°F 18°C, overcast through the afternoon, turning cloudy this evening, with steady humidity and steady pressure. Winds turning from the NE to the SE at 11 mph 17 km/h.

Sunday, September 20, 2026

Mid-Morning
Groton Weather - 2026-09-20 - Morning - Overcast
64°F 18°C
Overcast
Mid-Afternoon
Groton Weather - 2026-09-20 - Afternoon - Scattered Showers
66°F 19°C
Scattered Showers
Early-Evening
Groton Weather - 2026-09-20 - Evening - Light Rain
67°F 19°C
Light Rain
Mildly cool near 66°F 19°C, scattered downpours possible, with increasing humidity and barometric pressure falling. Winds switching from the SE to the S at 13 mph 19 km/h.

Monday, September 21, 2026

Mid-Morning
Groton Weather - 2026-09-21 - Morning - Scattered Showers
59°F 15°C
Scattered Showers
Mid-Afternoon
Groton Weather - 2026-09-21 - Afternoon - Scattered Showers
63°F 17°C
Scattered Showers
Early-Evening
Groton Weather - 2026-09-21 - Evening - Scattered Showers
62°F 17°C
Scattered Showers
Comfortable at 63°F 17°C, locally heavy downpours at times, with lower humidity and steady pressure. Winds moving from the NNE to the ENE at 16 mph 26 km/h. Gusts up to 21 mph 33 km/h.

Tuesday, September 22, 2026

Mid-Morning
Groton Weather - 2026-09-22 - Morning - Rain
56°F 13°C
Rain
Mid-Afternoon
Groton Weather - 2026-09-22 - Afternoon - Light Showers
57°F 14°C
Light Showers
Early-Evening
Groton Weather - 2026-09-22 - Evening - Light Showers
58°F 14°C
Light Showers
Crisp with a high near 57°F 14°C, rounds of showers expected off and on all day, with lower humidity and steady pressure. Winds out of the ENE at 23 mph 36 km/h. Gusts up to 30 mph 47 km/h.

Wednesday, September 23, 2026

Mid-Morning
Groton Weather - 2026-09-23 - Morning - Scattered Showers
60°F 16°C
Scattered Showers
Mid-Afternoon
Groton Weather - 2026-09-23 - Afternoon - Overcast
62°F 17°C
Overcast
Early-Evening
Groton Weather - 2026-09-23 - Evening - Scattered Showers
61°F 16°C
Scattered Showers
Refreshing around 62°F 17°C, scattered downpours possible, with steady humidity and steady pressure. Winds shifting from the ENE to the NE at 26 mph 41 km/h. Gusts up to 33 mph 52 km/h.

Thursday, September 24, 2026

Mid-Morning
Groton Weather - 2026-09-24 - Morning - Light Showers
60°F 16°C
Light Showers
Mid-Afternoon
Groton Weather - 2026-09-24 - Afternoon - Light Showers
59°F 15°C
Light Showers
Early-Evening
Groton Weather - 2026-09-24 - Evening - Light Showers
59°F 15°C
Light Showers
Mildly cool near 59°F 15°C, on-and-off showers throughout the day, with steady humidity and barometric pressure falling. Winds turning from the NE to the NNE at 26 mph 41 km/h. Gusts up to 39 mph 62 km/h.

Friday, September 25, 2026

Mid-Morning
Groton Weather - 2026-09-25 - Morning - Sunny
56°F 14°C
Sunny
Mid-Afternoon
Groton Weather - 2026-09-25 - Afternoon - Cloudy
63°F 17°C
Cloudy
Early-Evening
Groton Weather - 2026-09-25 - Evening - Overcast
61°F 16°C
Overcast
Comfortable at 63°F 17°C, cloudy through the afternoon, turning overcast this evening, with lower humidity and steady pressure. Winds switching from the NNE to the NE at 12 mph 19 km/h.

Saturday, September 26, 2026

Mid-Morning
Groton Weather - 2026-09-26 - Morning - Sunny
59°F 15°C
Sunny
Mid-Afternoon
Groton Weather - 2026-09-26 - Afternoon - Sunny
67°F 20°C
Sunny
Early-Evening
Groton Weather - 2026-09-26 - Evening - Sunny
62°F 17°C
Sunny
Cool with a high near 67°F 20°C, sunny throughout the day, with steady humidity and steady pressure. Winds blowing from the ENE at 15 mph 24 km/h. Gusts up to 22 mph 35 km/h.

Sunday, September 27, 2026

Mid-Morning
Groton Weather - 2026-09-27 - Morning - Overcast
58°F 14°C
Overcast
Mid-Afternoon
Groton Weather - 2026-09-27 - Afternoon - Overcast
67°F 19°C
Overcast
Early-Evening
Groton Weather - 2026-09-27 - Evening - Overcast
62°F 17°C
Overcast
Refreshing around 67°F 19°C, partly cloudy in the morning, becoming overcast through the afternoon and evening, with steady humidity and steady pressure. Winds ENE at 18 mph 30 km/h. Gusts up to 23 mph 38 km/h.

Monday, September 28, 2026

Mid-Morning
Groton Weather - 2026-09-28 - Morning - Overcast
58°F 14°C
Overcast
Mid-Afternoon
Groton Weather - 2026-09-28 - Afternoon - Overcast
65°F 18°C
Overcast
Early-Evening
Groton Weather - 2026-09-28 - Evening - Overcast
62°F 16°C
Overcast
Mildly cool near 65°F 18°C, cloudy in the morning, becoming overcast through the afternoon and evening, with lower humidity and barometric pressure falling. Winds shifting from the NNE to the NE at 19 mph 30 km/h. Gusts up to 29 mph 46 km/h.

Tuesday, September 29, 2026

Mid-Morning
Groton Weather - 2026-09-29 - Morning - Overcast
59°F 15°C
Overcast
Mid-Afternoon
Groton Weather - 2026-09-29 - Afternoon - Cloudy
63°F 17°C
Cloudy
Early-Evening
Groton Weather - 2026-09-29 - Evening - Overcast
63°F 18°C
Overcast
Comfortable at 63°F 17°C, overcast throughout the day, with steady humidity and steady pressure. Winds turning from the NNE to the NE at 14 mph 22 km/h. Gusts up to 25 mph 40 km/h.

Wednesday, September 30, 2026

Mid-Morning
Groton Weather - 2026-09-30 - Morning - Overcast
60°F 16°C
Overcast
Mid-Afternoon
Groton Weather - 2026-09-30 - Afternoon - Overcast
69°F 20°C
Overcast
Early-Evening
Groton Weather - 2026-09-30 - Evening - Overcast
63°F 17°C
Overcast
Comfortable with temperatures reaching 69°F 20°C, partly cloudy in the morning, becoming overcast through the afternoon and evening, with increasing humidity and steady pressure. Winds switching from the NNE to the NE at 16 mph 26 km/h. Gusts up to 25 mph 40 km/h.

Thursday, October 1, 2026

Mid-Morning
Groton Weather - 2026-10-01 - Morning - Scattered Showers
59°F 15°C
Scattered Showers
Mid-Afternoon
Groton Weather - 2026-10-01 - Afternoon - Scattered Showers
60°F 16°C
Scattered Showers
Early-Evening
Groton Weather - 2026-10-01 - Evening - Cloudy
58°F 15°C
Cloudy
Refreshing around 60°F 16°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds out of the NE at 21 mph 34 km/h. Gusts up to 26 mph 41 km/h.

Friday, October 2, 2026

Mid-Morning
Groton Weather - 2026-10-02 - Morning - Overcast
59°F 15°C
Overcast
Mid-Afternoon
Groton Weather - 2026-10-02 - Afternoon - Sunny
65°F 18°C
Sunny
Early-Evening
Groton Weather - 2026-10-02 - Evening - Overcast
61°F 16°C
Overcast
Mildly cool near 65°F 18°C, overcast in the morning, becoming cloudy through the afternoon and evening, with steady humidity and steady pressure. Winds blowing from the NE at 11 mph 18 km/h.

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Weather by the Numbers

Sat, 19th
Groton CT Weather - Saturday, Sep 19, 2026 - Overcast
Hi: 64°F 18°C
Lo: 58°F 15°C
Sunrise 06:32 AM
Sunset 06:50 PM
Wind E 8 mph12 km/h
Dew Point 47°F8°C
uv Index 6
Barometric Pressure 30.18 in1022 mb
POP 13% *
Humidity 55%
Sun, 20th
Groton CT Weather - Sunday, Sep 20, 2026 - Light Drizzle
Hi: 68°F 20°C
Lo: 62°F 17°C
Sunrise 06:33 AM
Sunset 06:49 PM
Wind SSE 11 mph17 km/h
Dew Point 58°F14°C
uv Index 1
Barometric Pressure 30.09 in1019 mb
POP 46% *
Humidity 82%
Mon, 21st
Groton CT Weather - Monday, Sep 21, 2026 - Overcast
Hi: 66°F 19°C
Lo: 58°F 14°C
Sunrise 06:34 AM
Sunset 06:47 PM
Wind NE 20 mph32 km/h
Dew Point 56°F13°C
uv Index 3
Barometric Pressure 30.09 in1019 mb
POP 26% *
Humidity 84%
Tue, 22nd
Groton CT Weather - Tuesday, Sep 22, 2026 - Light Rain
Hi: 60°F 16°C
Lo: 56°F 13°C
Sunrise 06:36 AM
Sunset 06:45 PM
Wind ENE 22 mph36 km/h
Dew Point 54°F12°C
uv Index 3
Barometric Pressure 30.33 in1027 mb
POP 80% *
Humidity 86%
Wed, 23rd
Groton CT Weather - Wednesday, Sep 23, 2026 - Patchy Rain Nearby
Hi: 63°F 17°C
Lo: 57°F 14°C
Sunrise 06:37 AM
Sunset 06:43 PM
Wind ENE 28 mph45 km/h
Dew Point 53°F12°C
uv Index 4
Barometric Pressure 30.42 in1030 mb
POP 20% *
Humidity 70%
Thu, 24th
Groton CT Weather - Thursday, Sep 24, 2026 - Light Rain Shower
Hi: 60°F 16°C
Lo: 58°F 14°C
Sunrise 06:38 AM
Sunset 06:42 PM
Wind NE 26 mph41 km/h
Dew Point 57°F14°C
uv Index 4
Barometric Pressure 30.15 in1021 mb
POP 65% *
Humidity 91%
Fri, 25th
Groton CT Weather - Friday, Sep 25, 2026 - Cloudy
Hi: 63°F 17°C
Lo: 55°F 13°C
Sunrise 06:39 AM
Sunset 06:40 PM
Wind NNE 16 mph26 km/h
Dew Point 48°F9°C
uv Index 4
Barometric Pressure 30.09 in1019 mb
POP 6% *
Humidity 63%
Sat, 26th
Groton CT Weather - Saturday, Sep 26, 2026 - Sunny
Hi: 68°F 20°C
Lo: 57°F 14°C
Sunrise 06:40 AM
Sunset 06:38 PM
Wind NE 15 mph24 km/h
Dew Point 46°F8°C
uv Index 5
Barometric Pressure 30.3 in1026 mb
POP 2% *
Humidity 50%
Sun, 27th
Groton CT Weather - Sunday, Sep 27, 2026 - Overcast
Hi: 67°F 19°C
Lo: 54°F 12°C
Sunrise 06:41 AM
Sunset 06:36 PM
Wind ENE 18 mph30 km/h
Dew Point 50°F10°C
uv Index 4
Barometric Pressure 30.42 in1030 mb
POP 14% *
Humidity 58%
Mon, 28th
Groton CT Weather - Monday, Sep 28, 2026 - Overcast
Hi: 65°F 18°C
Lo: 55°F 13°C
Sunrise 06:42 AM
Sunset 06:35 PM
Wind NE 19 mph30 km/h
Dew Point 49°F9°C
uv Index 4
Barometric Pressure 30.18 in1022 mb
POP 14% *
Humidity 59%
Tue, 29th
Groton CT Weather - Tuesday, Sep 29, 2026 - Overcast
Hi: 64°F 18°C
Lo: 57°F 14°C
Sunrise 06:43 AM
Sunset 06:33 PM
Wind NNE 16 mph25 km/h
Dew Point 44°F7°C
uv Index 4
Barometric Pressure 30.03 in1017 mb
POP 13% *
Humidity 55%
Wed, 30th
Groton CT Weather - Wednesday, Sep 30, 2026 - Overcast
Hi: 69°F 21°C
Lo: 57°F 14°C
Sunrise 06:44 AM
Sunset 06:31 PM
Wind NE 14 mph22 km/h
Dew Point 48°F9°C
uv Index 4
Barometric Pressure 30.18 in1022 mb
POP 11% *
Humidity 51%
Thu, 1st
Groton CT Weather - Thursday, Oct 1, 2026 - Cloudy
Hi: 60°F 16°C
Lo: 57°F 14°C
Sunrise 06:45 AM
Sunset 06:30 PM
Wind NE 22 mph35 km/h
Dew Point 52°F11°C
uv Index 4
Barometric Pressure 30.39 in1029 mb
POP 20% *
Humidity 76%
Fri, 2nd
Groton CT Weather - Friday, Oct 2, 2026 - Overcast
Hi: 65°F 18°C
Lo: 57°F 14°C
Sunrise 06:46 AM
Sunset 06:28 PM
Wind NE 15 mph23 km/h
Dew Point 51°F11°C
uv Index 4
Barometric Pressure 30.3 in1026 mb
POP 16% *
Humidity 66%
* POP = Probability of Precipitation. Data for 12:00 PM.