What is the weather in Groton right now?

Current weather in Groton is scattered clouds.

Where can I find the hourly weather forecast for Groton?

This page shows hourly weather forecast for Groton, including temperature, wind, precipitation, humidity and cloud cover.

Is the weather forecast for Groton updated regularly?

Weather data for Groton is updated regularly with the latest available observations and forecasts.

Now · 12:17 AM

Groton Weather & Hourly Forecast

United States · New York · 13073

61°F

Partly cloudy night

Feels like: 62°F

💧 Humidity 92% 🌡 Pressure 29.91 inHg 💨 Wind 2 mph 👁 Visibility 6.2 mi ☁ Clouds 46% ☀️ UV index 0.0 · Low 🌅 Sunrise 6:34 AM 🌇 Sunset 7:33 PM

Hourly Forecast for Groton

Today

1:00 AM

Partly cloudy night

61° 💧 None 💨 2 mph H 92%29.91 inHg

4:00 AM

Partly cloudy night

61° 💧 None 💨 1 mph H 92%29.88 inHg

7:00 AM

Mostly sunny

61° 💧 None 💨 3 mph H 96%29.91 inHg

10:00 AM

Sunny

71° 💧 None 💨 8 mph H 79%29.91 inHg

1:00 PM

Partly cloudy

75° 💧 None 💨 9 mph H 64%29.91 inHg

4:00 PM

Overcast

73° 💧 None 💨 8 mph H 74%29.91 inHg

7:00 PM

Mostly cloudy

69° 💧 None 💨 8 mph H 85%29.91 inHg

10:00 PM

Clear night

62° 💧 None 💨 5 mph H 97%29.97 inHg

Tomorrow

1:00 AM

Clear night

60° 💧 None 💨 2 mph H 95%30.00 inHg

4:00 AM

Clear night

58° 💧 None 💨 4 mph H 96%30.00 inHg

7:00 AM

Sunny

57° 💧 None 💨 5 mph H 98%30.06 inHg

10:00 AM

Mostly sunny

67° 💧 None 💨 7 mph H 78%30.06 inHg

1:00 PM

Sunny

73° 💧 None 💨 9 mph H 58%30.06 inHg

4:00 PM

Sunny

70° 💧 None 💨 9 mph H 54%30.06 inHg

7:00 PM

Sunny

62° 💧 None 💨 8 mph H 77%30.09 inHg

10:00 PM

Clear night

54° 💧 None 💨 4 mph H 91%30.15 inHg

Today

1:00 AM

Partly cloudy night

61° 💧 None 💨 2 mph H 92%29.91 inHg

2:00 AM

Partly cloudy night

62° 💧 None 💨 2 mph H 92%29.91 inHg

3:00 AM

Partly cloudy night

62° 💧 None 💨 2 mph H 92%29.91 inHg

4:00 AM

Partly cloudy night

61° 💧 None 💨 1 mph H 92%29.88 inHg

5:00 AM

Mostly clear night

61° 💧 None 💨 2 mph H 93%29.91 inHg

6:00 AM

Mostly clear night

61° 💧 None 💨 3 mph H 94%29.91 inHg

7:00 AM

Mostly sunny

61° 💧 None 💨 3 mph H 96%29.91 inHg

8:00 AM

Sunny

64° 💧 None 💨 4 mph H 93%29.91 inHg

9:00 AM

Sunny

68° 💧 None 💨 6 mph H 87%29.91 inHg

10:00 AM

Sunny

71° 💧 None 💨 8 mph H 79%29.91 inHg

11:00 AM

Mostly sunny

73° 💧 None 💨 9 mph H 74%29.91 inHg

12:00 PM

Mostly sunny

73° 💧 None 💨 10 mph H 68%29.91 inHg

1:00 PM

Partly cloudy

75° 💧 None 💨 9 mph H 64%29.91 inHg

2:00 PM

Partly cloudy

74° 💧 None 💨 9 mph H 65%29.91 inHg

3:00 PM

Overcast

74° 💧 None 💨 8 mph H 72%29.91 inHg

4:00 PM

Overcast

73° 💧 None 💨 8 mph H 74%29.91 inHg

5:00 PM

Overcast

73° 💧 None 💨 8 mph H 75%29.91 inHg

6:00 PM

Overcast

70° 💧 None 💨 9 mph H 77%29.91 inHg

7:00 PM

Mostly cloudy

69° 💧 None 💨 8 mph H 85%29.91 inHg

8:00 PM

Mostly cloudy night

66° 💧 None 💨 6 mph H 95%29.94 inHg

9:00 PM

Clear night

64° 💧 None 💨 6 mph H 96%29.94 inHg

10:00 PM

Clear night

62° 💧 None 💨 5 mph H 97%29.97 inHg

11:00 PM

Clear night

62° 💧 None 💨 3 mph H 96%29.97 inHg

Tomorrow

12:00 AM

Clear night

61° 💧 None 💨 2 mph H 95%29.97 inHg

1:00 AM

Clear night

60° 💧 None 💨 2 mph H 95%30.00 inHg

2:00 AM

Clear night

58° 💧 None 💨 3 mph H 95%30.00 inHg

3:00 AM

Clear night

58° 💧 None 💨 4 mph H 96%30.00 inHg

4:00 AM

Clear night

58° 💧 None 💨 4 mph H 96%30.00 inHg

5:00 AM

Clear night

57° 💧 None 💨 4 mph H 97%30.00 inHg

6:00 AM

Clear night

57° 💧 None 💨 5 mph H 98%30.03 inHg

7:00 AM

Sunny

57° 💧 None 💨 5 mph H 98%30.06 inHg

8:00 AM

Sunny

59° 💧 None 💨 4 mph H 96%30.06 inHg

9:00 AM

Mostly sunny

63° 💧 None 💨 6 mph H 89%30.06 inHg

10:00 AM

Mostly sunny

67° 💧 None 💨 7 mph H 78%30.06 inHg

11:00 AM

Sunny

70° 💧 None 💨 8 mph H 67%30.06 inHg

12:00 PM

Sunny

71° 💧 None 💨 8 mph H 61%30.06 inHg

1:00 PM

Sunny

73° 💧 None 💨 9 mph H 58%30.06 inHg

2:00 PM

Sunny

75° 💧 None 💨 9 mph H 55%30.06 inHg

3:00 PM

Sunny

70° 💧 None 💨 9 mph H 54%30.06 inHg

4:00 PM

Sunny

70° 💧 None 💨 9 mph H 54%30.06 inHg

5:00 PM

Sunny

69° 💧 None 💨 9 mph H 61%30.06 inHg

6:00 PM

Sunny

66° 💧 None 💨 9 mph H 69%30.09 inHg

7:00 PM

Sunny

62° 💧 None 💨 8 mph H 77%30.09 inHg

8:00 PM

Mostly clear night

57° 💧 None 💨 6 mph H 85%30.12 inHg

9:00 PM

Clear night

55° 💧 None 💨 6 mph H 90%30.15 inHg

10:00 PM

Clear night

54° 💧 None 💨 4 mph H 91%30.15 inHg

11:00 PM

Clear night

53° 💧 None 💨 3 mph H 91%30.15 inHg

Monday

12:00 AM

Clear night

53° 💧 None 💨 2 mph H 89%30.15 inHg

1:00 AM

Clear night

52° 💧 None 💨 2 mph H 88%30.15 inHg

2:00 AM

Clear night

51° 💧 None 💨 1 mph H 88%30.15 inHg

3:00 AM

Clear night

51° 💧 None 💨 2 mph H 88%30.18 inHg

4:00 AM

Clear night

50° 💧 None 💨 1 mph H 88%30.18 inHg

5:00 AM

Clear night

50° 💧 None 💨 2 mph H 88%30.21 inHg

6:00 AM

Clear night

50° 💧 None 💨 1 mph H 88%30.21 inHg

7:00 AM

Sunny

50° 💧 None 💨 1 mph H 87%30.21 inHg

8:00 AM

Sunny

55° 💧 None 💨 2 mph H 83%30.24 inHg

9:00 AM

Sunny

59° 💧 None 💨 4 mph H 76%30.24 inHg

10:00 AM

Sunny

64° 💧 None 💨 6 mph H 72%30.24 inHg

11:00 AM

Sunny

67° 💧 None 💨 7 mph H 67%30.24 inHg

12:00 PM

Sunny

69° 💧 None 💨 6 mph H 60%30.21 inHg

1:00 PM

Sunny

70° 💧 None 💨 6 mph H 56%30.21 inHg

2:00 PM

Sunny

71° 💧 None 💨 5 mph H 54%30.18 inHg

3:00 PM

Sunny

72° 💧 None 💨 5 mph H 54%30.18 inHg

4:00 PM

Sunny

71° 💧 None 💨 6 mph H 55%30.18 inHg

5:00 PM

Sunny

70° 💧 None 💨 6 mph H 59%30.18 inHg

6:00 PM

Partly cloudy

69° 💧 None 💨 4 mph H 72%30.21 inHg

7:00 PM

Partly cloudy

64° 💧 None 💨 3 mph H 75%30.21 inHg

8:00 PM

Mostly cloudy night

59° 💧 None 💨 2 mph H 81%30.21 inHg

9:00 PM

Overcast night

58° 💧 None 💨 2 mph H 83%30.24 inHg

10:00 PM

Overcast night

57° 💧 None 💨 0 mph H 82%30.27 inHg

11:00 PM

Overcast night

57° 💧 None 💨 2 mph H 82%30.24 inHg

Tuesday

12:00 AM

Overcast night

55° 💧 None 💨 3 mph H 85%30.24 inHg

1:00 AM

Mostly cloudy night

55° 💧 None 💨 3 mph H 87%30.24 inHg

2:00 AM

Overcast night

55° 💧 None 💨 3 mph H 87%30.27 inHg

3:00 AM

Overcast night

54° 💧 None 💨 3 mph H 88%30.27 inHg

4:00 AM

Overcast night

54° 💧 None 💨 3 mph H 88%30.24 inHg

5:00 AM

Overcast night

53° 💧 None 💨 3 mph H 88%30.27 inHg

6:00 AM

Overcast night

53° 💧 None 💨 4 mph H 89%30.27 inHg

7:00 AM

Overcast

54° 💧 None 💨 4 mph H 86%30.27 inHg

8:00 AM

Overcast

58° 💧 None 💨 4 mph H 83%30.30 inHg

9:00 AM

Partly cloudy

63° 💧 None 💨 4 mph H 72%30.27 inHg

10:00 AM

Partly cloudy

67° 💧 None 💨 4 mph H 64%30.27 inHg

11:00 AM

Mostly cloudy

70° 💧 None 💨 4 mph H 59%30.27 inHg

12:00 PM

Mostly cloudy

72° 💧 None 💨 4 mph H 55%30.27 inHg

1:00 PM

Mostly cloudy

74° 💧 None 💨 5 mph H 52%30.24 inHg

2:00 PM

Mostly cloudy

75° 💧 None 💨 5 mph H 51%30.21 inHg

3:00 PM

Overcast

76° 💧 None 💨 3 mph H 50%30.21 inHg

4:00 PM

Overcast

75° 💧 None 💨 4 mph H 57%30.21 inHg

5:00 PM

Overcast

75° 💧 None 💨 3 mph H 61%30.21 inHg

6:00 PM

Overcast

72° 💧 None 💨 4 mph H 71%30.18 inHg

7:00 PM

Overcast

68° 💧 None 💨 5 mph H 73%30.18 inHg

8:00 PM

Overcast night

66° 💧 None 💨 6 mph H 73%30.18 inHg

9:00 PM

Overcast night

67° 💧 None 💨 7 mph H 68%30.18 inHg

10:00 PM

Overcast night

67° 💧 None 💨 7 mph H 67%30.18 inHg

11:00 PM

Overcast night

66° 💧 None 💨 8 mph H 67%30.18 inHg

Wednesday

12:00 AM

Overcast night

67° 💧 None 💨 8 mph H 67%30.15 inHg

In Groton and, more broadly, across the state of New York: This evening, the sky will feature a mix of sun and clouds, providing a pleasant and mild atmosphere. Temperatures will range from 66 to 71 degrees Fahrenheit, making for a comfortable night. Winds will be light, coming from the northwest at around 8 mph, with occasional gusts reaching up to 19 mph. No rain is expected in the coming hours, so outdoor plans should remain unaffected. As the night progresses, the weather is likely to stay generally clear with no significant changes. Overall, it should be a calm and mild evening, ideal for relaxing outside or enjoying some evening activities.

15-Day Weather Outlook for Groton

Saturday, Sep 5Sat Sep 5

Mostly sunny 75°/60° 💧 None 💨 10 mph

TomorrowTomorrow

Mostly sunny 70°/53° 💧 None 💨 10 mph

Monday, Sep 7Mon Sep 7

Sunny 71°/50° 💧 None 💨 6 mph

Tuesday, Sep 8Tue Sep 8

Overcast 75°/53° 💧 None 💨 6 mph

Wednesday, Sep 9Wed Sep 9

Light rain 86°/65° 💧 0.11 in 💨 18 mph

Thursday, Sep 10Thu Sep 10

Light rain 64°/47° 💧 0.09 in 💨 17 mph

Friday, Sep 11Fri Sep 11

Overcast 57°/42° 💧 None 💨 16 mph

Saturday, Sep 12Sat Sep 12

Sunny 62°/38° 💧 None 💨 8 mph

Sunday, Sep 13Sun Sep 13

Moderate rain 62°/45° 💧 0.45 in 💨 9 mph

Monday, Sep 14Mon Sep 14

Overcast 74°/53° 💧 None 💨 7 mph

Tuesday, Sep 15Tue Sep 15

Partly cloudy 81°/60° 💧 None 💨 6 mph

Wednesday, Sep 16Wed Sep 16

Light rain 92°/68° 💧 0.08 in 💨 9 mph

Thursday, Sep 17Thu Sep 17

Sunny 89°/69° 💧 None 💨 9 mph

Friday, Sep 18Fri Sep 18

Sunny 87°/69° 💧 None 💨 6 mph

Saturday, Sep 19Sat Sep 19

Light rain 88°/70° 💧 0.00 in 💨 6 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Groton

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Groton

Hourly forecast · Updated every 2 hours

Good

Nearest forecast value 1:00 AM

PM2.5 Fine particles Good 3,6µg/m³

Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.

PM10 Particulate matter Good 3,8µg/m³

Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.

O₃ Ozone Good 29,9µg/m³

Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.

NO₂ Nitrogen dioxide Good 2,6µg/m³

A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.

Air quality is favorable for outdoor activities.

UV & HEALTH

UV, Sun & Health Outlook in Groton

Maximum daily UV Today, tomorrow and the following day show the maximum UV index forecast for each day.

0–2 Low 3–5 Moderate 6–7 High 8–10 Very high 11+ Extreme

Today UV 6,4High 😊Good

Tomorrow UV 6,6High 🙂Fair

Monday UV 6,5High 🙂Fair

Tuesday UV 6,2High 🙂Fair

Wednesday UV 7,0High —Unavailable

Thursday UV 4,0Moderate —Unavailable

Friday UV 4,0Moderate —Unavailable

Hourly UV index today

7:00 AMUV 0,0 8:00 AMUV 0,5 9:00 AMUV 1,4 10:00 AMUV 3,0 11:00 AMUV 4,7 12:00 PMUV 6,1 1:00 PMUV 6,4 2:00 PMUV 5,0 3:00 PMUV 2,3 4:00 PMUV 1,2 5:00 PMUV 0,9 6:00 PMUV 0,5

Today's weather health advice Open today's recommendations.

Strong UV exposure

Protect exposed skin with SPF 30+ sunscreen, wear sunglasses, and try to limit direct midday sun.

Good air quality

Air quality is good and outdoor activities can be enjoyed normally.

Comfortable temperature conditions

Temperatures should feel comfortable for most people, with no particular heat or cold precautions needed.

Good conditions for outdoor activities

Outdoor activities can generally be enjoyed normally, with sun protection adjusted to the UV level.

WIND OUTLOOK

Hourly Wind Forecast for Groton

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · GROTON, NEW YORK

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 5:00 AM–6:00 AM.

80/100Best-hour score

BEST TIME TONIGHT 5:00 AM–6:00 AM Astronomical darkness: 9:13 PM–4:56 AM

☁ Cloud cover 15% Real hourly forecast for the best viewing hour.

☾ Moonlight 40% Last Quarter · Moon about 52° above the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 86° high at the best hour.

✦ Estimated visible meteors 1–3/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min65%

UPCOMING METEOR PERIODSStart, peak and end dates · weather should be checked closer to the peak.

AUG 28–SEP 5

AurigidsStart AUG 28 · Peak SEP 1 · End SEP 5 · ZHR 6 · 80% Moon at peak

ACTIVE NOW

SEP 5–SEP 21

September ε-PerseidsStart SEP 5 · Peak SEP 9 · End SEP 21 · ZHR 8 · 6% Moon at peak

ACTIVE NOW

SEP 20–NOV 20

Southern TauridsStart SEP 20 · Peak NOV 5 · End NOV 20 · ZHR 7 · 20% Moon at peak

UPCOMING

OCT 2–NOV 7

OrionidsStart OCT 2 · Peak OCT 21 · End NOV 7 · ZHR 20 · 77% Moon at peak

UPCOMING

Experimental local observing estimate. Weather values come from the hourly forecast already used on this page. Moon position and astronomical darkness are calculated locally from time and coordinates. Meteor-shower ZHR describes ideal conditions and is not the number of meteors a person should expect to see locally.

DISCOVER WEATHER NEARBY Weather in other cities

Explore current conditions and forecasts for other locations.

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Forecast data for Groton were last refreshed today at 12:17 AM. The current forecast period extends through 06/09/2026 at 10:00 PM. Weather, air-quality and UV-index data are provided through WEATHER-INFO.COM. Forecasts are produced automatically from the latest available data and are subject to periodic technical checks. This service is intended for general weather information.