What is the weather in Groton right now?

Current weather in Groton is broken 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 · 1:02 PM

Groton Weather & Hourly Forecast

United States · New York · 13073

72°F

Mostly cloudy

Feels like: 70°F

💧 Humidity 71% 🌡 Pressure 29.91 inHg 💨 Wind 11 mph 👁 Visibility 14.0 mi ☁ Clouds 85% ☀️ UV index 5.3 · Moderate 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Groton

Today

2:00 PM

Mostly cloudy

73° 💧 0.000 in 💨 11 mph H 68%29.91 inHg

5:00 PM

Overcast

72° 💧 None 💨 11 mph H 68%29.88 inHg

8:00 PM

Overcast night

66° 💧 None 💨 7 mph H 72%29.91 inHg

11:00 PM

Overcast night

63° 💧 None 💨 8 mph H 80%29.94 inHg

Tomorrow

2:00 AM

Clear night

57° 💧 None 💨 4 mph H 89%29.97 inHg

5:00 AM

Mostly clear night

55° 💧 None 💨 4 mph H 95%29.97 inHg

8:00 AM

Sunny

57° 💧 0.000 in 💨 5 mph H 95%30.03 inHg

11:00 AM

Partly cloudy

63° 💧 None 💨 8 mph H 70%30.03 inHg

2:00 PM

Mostly cloudy

66° 💧 None 💨 8 mph H 59%30.03 inHg

5:00 PM

Sunny

66° 💧 None 💨 7 mph H 62%30.00 inHg

8:00 PM

Clear night

59° 💧 None 💨 2 mph H 81%30.03 inHg

11:00 PM

Clear night

53° 💧 None 💨 4 mph H 94%30.06 inHg

Saturday

2:00 AM

Clear night

53° 💧 None 💨 5 mph H 91%30.06 inHg

5:00 AM

Clear night

51° 💧 None 💨 6 mph H 93%30.09 inHg

8:00 AM

Sunny

55° 💧 None 💨 8 mph H 88%30.09 inHg

11:00 AM

Sunny

68° 💧 None 💨 9 mph H 67%30.06 inHg

Today

2:00 PM

Mostly cloudy

73° 💧 0.000 in 💨 11 mph H 68%29.91 inHg

3:00 PM

Mostly cloudy

73° 💧 None 💨 11 mph H 66%29.88 inHg

4:00 PM

Mostly cloudy

72° 💧 None 💨 11 mph H 67%29.88 inHg

5:00 PM

Overcast

72° 💧 None 💨 11 mph H 68%29.88 inHg

6:00 PM

Overcast

70° 💧 None 💨 9 mph H 73%29.88 inHg

7:00 PM

Overcast

67° 💧 None 💨 8 mph H 73%29.88 inHg

8:00 PM

Overcast night

66° 💧 None 💨 7 mph H 72%29.91 inHg

9:00 PM

Overcast night

65° 💧 None 💨 6 mph H 75%29.91 inHg

10:00 PM

Overcast night

64° 💧 None 💨 7 mph H 79%29.91 inHg

11:00 PM

Overcast night

63° 💧 None 💨 8 mph H 80%29.94 inHg

Tomorrow

12:00 AM

Overcast night

60° 💧 None 💨 5 mph H 81%29.94 inHg

1:00 AM

Partly cloudy night

59° 💧 None 💨 4 mph H 83%29.97 inHg

2:00 AM

Clear night

57° 💧 None 💨 4 mph H 89%29.97 inHg

3:00 AM

Clear night

56° 💧 None 💨 4 mph H 91%29.97 inHg

4:00 AM

Clear night

55° 💧 None 💨 4 mph H 94%29.97 inHg

5:00 AM

Mostly clear night

55° 💧 None 💨 4 mph H 95%29.97 inHg

6:00 AM

Mostly clear night

55° 💧 None 💨 5 mph H 96%29.97 inHg

7:00 AM

Sunny

54° 💧 None 💨 4 mph H 97%30.00 inHg

8:00 AM

Sunny

57° 💧 None 💨 5 mph H 95%30.03 inHg

9:00 AM

Mostly sunny

59° 💧 None 💨 7 mph H 85%30.03 inHg

10:00 AM

Mostly sunny

61° 💧 0.000 in 💨 8 mph H 77%30.03 inHg

11:00 AM

Partly cloudy

63° 💧 None 💨 8 mph H 70%30.03 inHg

12:00 PM

Mostly cloudy

64° 💧 None 💨 8 mph H 64%30.03 inHg

1:00 PM

Mostly cloudy

65° 💧 None 💨 8 mph H 59%30.03 inHg

2:00 PM

Mostly cloudy

66° 💧 None 💨 8 mph H 59%30.03 inHg

3:00 PM

Partly cloudy

66° 💧 None 💨 7 mph H 58%30.03 inHg

4:00 PM

Sunny

66° 💧 None 💨 7 mph H 60%30.00 inHg

5:00 PM

Sunny

66° 💧 None 💨 7 mph H 62%30.00 inHg

6:00 PM

Sunny

64° 💧 None 💨 6 mph H 68%30.03 inHg

7:00 PM

Sunny

61° 💧 None 💨 3 mph H 80%30.03 inHg

8:00 PM

Clear night

59° 💧 None 💨 2 mph H 81%30.03 inHg

9:00 PM

Clear night

56° 💧 None 💨 3 mph H 88%30.06 inHg

10:00 PM

Clear night

55° 💧 None 💨 4 mph H 92%30.06 inHg

11:00 PM

Clear night

53° 💧 None 💨 4 mph H 94%30.06 inHg

Saturday

12:00 AM

Clear night

53° 💧 None 💨 4 mph H 94%30.06 inHg

1:00 AM

Clear night

53° 💧 None 💨 5 mph H 92%30.06 inHg

2:00 AM

Clear night

53° 💧 None 💨 5 mph H 91%30.06 inHg

3:00 AM

Clear night

52° 💧 None 💨 5 mph H 90%30.06 inHg

4:00 AM

Clear night

52° 💧 None 💨 5 mph H 92%30.06 inHg

5:00 AM

Clear night

51° 💧 None 💨 6 mph H 93%30.09 inHg

6:00 AM

Clear night

51° 💧 None 💨 6 mph H 93%30.09 inHg

7:00 AM

Sunny

52° 💧 None 💨 7 mph H 93%30.09 inHg

8:00 AM

Sunny

55° 💧 None 💨 8 mph H 88%30.09 inHg

9:00 AM

Sunny

60° 💧 None 💨 7 mph H 83%30.09 inHg

10:00 AM

Sunny

64° 💧 None 💨 8 mph H 75%30.09 inHg

11:00 AM

Sunny

68° 💧 None 💨 9 mph H 67%30.06 inHg

12:00 PM

Sunny

70° 💧 None 💨 10 mph H 64%30.06 inHg

1:00 PM

Sunny

73° 💧 None 💨 10 mph H 62%30.03 inHg

2:00 PM

Sunny

74° 💧 None 💨 10 mph H 62%30.00 inHg

3:00 PM

Mostly sunny

76° 💧 None 💨 10 mph H 61%29.97 inHg

4:00 PM

Partly cloudy

76° 💧 None 💨 10 mph H 62%29.97 inHg

5:00 PM

Mostly sunny

75° 💧 0.000 in 💨 9 mph H 69%29.94 inHg

6:00 PM

Mostly sunny

73° 💧 None 💨 9 mph H 72%29.97 inHg

7:00 PM

Mostly sunny

70° 💧 None 💨 10 mph H 74%29.97 inHg

8:00 PM

Mostly clear night

69° 💧 None 💨 9 mph H 76%29.97 inHg

Sunday

5:00 AM

Light rain

64° 💧 None 💨 9 mph H 98%29.94 inHg

8:00 AM

Overcast

65° 💧 None 💨 8 mph H 98%29.97 inHg

11:00 AM

Light rain

70° 💧 None 💨 8 mph H 90%29.94 inHg

2:00 PM

Light rain

70° 💧 None 💨 11 mph H 88%29.94 inHg

5:00 PM

Light rain

72° 💧 None 💨 11 mph H 82%29.91 inHg

8:00 PM

Mostly clear night

64° 💧 None 💨 7 mph H 81%29.97 inHg

11:00 PM

Mostly cloudy night

60° 💧 None 💨 6 mph H 76%30.00 inHg

Monday

2:00 AM

Overcast night

59° 💧 None 💨 7 mph H 89%30.03 inHg

5:00 AM

Light rain

58° 💧 None 💨 10 mph H 84%30.06 inHg

8:00 AM

Mostly sunny

56° 💧 None 💨 7 mph H 97%30.12 inHg

11:00 AM

Light rain

62° 💧 None 💨 10 mph H 78%30.15 inHg

2:00 PM

Mostly sunny

66° 💧 None 💨 8 mph H 64%30.15 inHg

5:00 PM

Sunny

64° 💧 None 💨 9 mph H 60%30.15 inHg

8:00 PM

Clear night

55° 💧 None 💨 5 mph H 79%30.21 inHg

11:00 PM

Clear night

51° 💧 None 💨 5 mph H 82%30.24 inHg

Tuesday

2:00 AM

Mostly clear night

49° 💧 None 💨 4 mph H 83%30.27 inHg

5:00 AM

Mostly clear night

47° 💧 None 💨 6 mph H 87%30.27 inHg

8:00 AM

Partly cloudy

51° 💧 None 💨 8 mph H 82%30.30 inHg

11:00 AM

Mostly cloudy

63° 💧 None 💨 10 mph H 64%30.27 inHg

2:00 PM

Mostly cloudy

69° 💧 None 💨 12 mph H 61%30.21 inHg

5:00 PM

Mostly sunny

70° 💧 None 💨 11 mph H 64%30.18 inHg

8:00 PM

Clear night

65° 💧 None 💨 10 mph H 74%30.18 inHg

11:00 PM

Clear night

63° 💧 None 💨 11 mph H 81%30.21 inHg

Wednesday

2:00 AM

Clear night

61° 💧 None 💨 10 mph H 85%30.21 inHg

8:00 AM

Mostly sunny

60° 💧 None 💨 10 mph H 77%30.24 inHg

2:00 PM

Sunny

61° 💧 None 💨 10 mph H 81%30.24 inHg

8:00 PM

Light rain

80° 💧 None 💨 9 mph H 69%30.18 inHg

Thursday

2:00 AM

Heavy rain

68° 💧 None 💨 4 mph H 99%30.24 inHg

8:00 AM

Overcast

65° 💧 None 💨 1 mph H 100%30.21 inHg

2:00 PM

Moderate rain

66° 💧 None 💨 8 mph H 99%30.15 inHg

8:00 PM

Partly cloudy night

80° 💧 None 💨 12 mph H 67%30.00 inHg

Friday

2:00 AM

Mostly clear night

71° 💧 None 💨 13 mph H 86%29.88 inHg

8:00 AM

Moderate rain

58° 💧 None 💨 14 mph H 98%29.97 inHg

2:00 PM

Light rain

54° 💧 None 💨 8 mph H 97%30.12 inHg

8:00 PM

Clear night

62° 💧 None 💨 11 mph H 64%30.12 inHg

Saturday

2:00 AM

Clear night

53° 💧 None 💨 4 mph H 86%30.18 inHg

8:00 AM

Mostly sunny

51° 💧 None 💨 2 mph H 92%30.21 inHg

2:00 PM

Sunny

50° 💧 None 💨 7 mph H 82%30.30 inHg

8:00 PM

Clear night

63° 💧 None 💨 5 mph H 51%30.27 inHg

Sunday

2:00 AM

Clear night

54° 💧 None 💨 6 mph H 77%30.24 inHg

8:00 AM

Sunny

48° 💧 None 💨 5 mph H 86%30.24 inHg

2:00 PM

Sunny

49° 💧 None 💨 5 mph H 84%30.27 inHg

8:00 PM

Clear night

67° 💧 None 💨 4 mph H 52%30.24 inHg

Monday

2:00 AM

Clear night

56° 💧 None 💨 6 mph H 77%30.27 inHg

8:00 AM

Sunny

53° 💧 None 💨 6 mph H 88%30.30 inHg

2:00 PM

Sunny

54° 💧 None 💨 6 mph H 85%30.36 inHg

8:00 PM

Clear night

69° 💧 None 💨 6 mph H 60%30.33 inHg

Tuesday

2:00 AM

Clear night

60° 💧 None 💨 8 mph H 77%30.33 inHg

8:00 AM

Sunny

53° 💧 None 💨 4 mph H 90%30.39 inHg

2:00 PM

Sunny

54° 💧 None 💨 4 mph H 91%30.39 inHg

8:00 PM

Overcast night

69° 💧 None 💨 6 mph H 58%30.33 inHg

Wednesday

2:00 AM

Mostly clear night

58° 💧 None 💨 4 mph H 86%30.27 inHg

8:00 AM

Sunny

50° 💧 None 💨 3 mph H 99%30.24 inHg

2:00 PM

Sunny

52° 💧 None 💨 5 mph H 91%30.21 inHg

8:00 PM

Mostly clear night

69° 💧 None 💨 7 mph H 58%30.06 inHg

Thursday

2:00 AM

Clear night

60° 💧 None 💨 6 mph H 84%30.00 inHg

8:00 AM

Light rain

57° 💧 None 💨 8 mph H 95%29.97 inHg

2:00 PM

Overcast

51° 💧 None 💨 12 mph H 92%30.06 inHg

8:00 PM

Overcast night

55° 💧 None 💨 11 mph H 71%30.15 inHg

Friday

2:00 AM

Mostly cloudy night

52° 💧 None 💨 7 mph H 78%30.21 inHg

In Groton and, more broadly, across the state of New York: The rest of the day will bring a mix of sun and clouds, with temperatures lingering between 62 and 74 degrees Fahrenheit. Winds will be moderate, coming in from the northwest at up to 16 mph, with gusts reaching 28 mph. No significant rainfall is expected, so conditions should remain dry. It will be a pleasant afternoon with mild temperatures and a breezy northwest wind. Keep an eye on the sky if you're outdoors, as gusty conditions may develop. Overall, it looks like a comfortable day to be outside, with enough sunshine and mild weather to enjoy.

15-Day Weather Outlook for Groton

TomorrowTomorrow

Overcast 66°/54° 💧 None 💨 8 mph

Saturday, Sep 12Sat Sep 12

Mostly sunny 76°/51° 💧 None 💨 10 mph

Sunday, Sep 13Sun Sep 13

Light rain 72°/64° 💧 0.239 in 💨 11 mph

Monday, Sep 14Mon Sep 14

Light rain 66°/56° 💧 0.102 in 💨 10 mph

Tuesday, Sep 15Tue Sep 15

Mostly sunny 70°/47° 💧 None 💨 12 mph

Wednesday, Sep 16Wed Sep 16

Mostly sunny 65°/60° 💧 0.324 in 💨 11 mph

Thursday, Sep 17Thu Sep 17

Heavy rain 80°/65° 💧 0.529 in 💨 9 mph

Friday, Sep 18Fri Sep 18

Moderate rain 80°/54° 💧 0.794 in 💨 14 mph

Saturday, Sep 19Sat Sep 19

Mostly sunny 62°/50° 💧 0.004 in 💨 11 mph

Sunday, Sep 20Sun Sep 20

Sunny 63°/48° 💧 None 💨 6 mph

Monday, Sep 21Mon Sep 21

Sunny 67°/53° 💧 None 💨 6 mph

Tuesday, Sep 22Tue Sep 22

Sunny 69°/53° 💧 None 💨 8 mph

Wednesday, Sep 23Wed Sep 23

Overcast 69°/50° 💧 0.001 in 💨 6 mph

Thursday, Sep 24Thu Sep 24

Light rain 69°/51° 💧 0.032 in 💨 12 mph

Friday, Sep 25Fri Sep 25

Overcast 55°/52° 💧 0.005 in 💨 11 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

Fair

Nearest forecast value 2:00 PM

PM2.5 Fine particles Good 2,0µg/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 2,1µg/m³

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

O₃ Ozone Fair 73,8µg/m³

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

NO₂ Nitrogen dioxide Good 0,6µg/m³

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

Air quality is acceptable for most people.

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 6,1High 🙂Fair

Tomorrow UV 6,3High 🙂Fair

Saturday UV 6,2High 🙂Fair

Sunday UV 5,7Moderate 🙂Fair

Monday UV 5,0Moderate 😊Good

Tuesday UV 6,0High —Unavailable

Wednesday UV 5,0Moderate —Unavailable

Hourly UV index today

2:00 PMUV 6,0 3:00 PMUV 4,7 4:00 PMUV 2,9 5:00 PMUV 1,4 6:00 PMUV 0,5 7:00 PMUV 0,0

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.

Acceptable air quality

Air quality is acceptable for most people. Very sensitive people may want to reduce prolonged exertion.

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: 2:00 AM–3:00 AM.

97/100Best-hour score

BEST TIME TONIGHT 2:00 AM–3:00 AM Astronomical darkness: 9:01 PM–5:04 AM

☁ Cloud cover 2% Real hourly forecast for the best viewing hour.

☾ Moonlight 0% New Moon · Moon below the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 57° high at the best hour.

✦ Estimated visible meteors 1–4/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min75%

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

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

OCT 20–DEC 10

Northern TauridsStart OCT 20 · Peak NOV 12 · End DEC 10 · ZHR 5 · 7% 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 12:24 PM. The current forecast period extends through 12/09/2026 at 11:00 AM. 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.