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Current weather in Cold Spring Harbor is overcast clouds.

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Weather data for Cold Spring Harbor is updated regularly with the latest available observations and forecasts.

Now · 9:02 AM

Cold Spring Harbor Weather & Hourly Forecast

United States · New York · 11724

59°F

Overcast

Feels like: 49°F

💧 Humidity 75% 🌡 Pressure 30.45 inHg 💨 Wind 18 mph 👁 Visibility 12.6 mi ☁ Clouds 100% ☀️ UV index 0.3 · Low 🌅 Sunrise 6:41 AM 🌇 Sunset 6:50 PM

Hourly Forecast for Cold Spring Harbor

Today

10:00 AM

Overcast

60° 💧 0.013 in 💨 19 mph H 72%30.42 inHg

1:00 PM

Overcast

65° 💧 None 💨 19 mph H 59%30.42 inHg

4:00 PM

Mostly sunny

65° 💧 None 💨 19 mph H 52%30.39 inHg

7:00 PM

Clear night

62° 💧 None 💨 18 mph H 58%30.42 inHg

10:00 PM

Clear night

58° 💧 None 💨 18 mph H 60%30.45 inHg

Tomorrow

1:00 AM

Partly cloudy night

56° 💧 None 💨 16 mph H 68%30.42 inHg

4:00 AM

Mostly cloudy night

56° 💧 None 💨 17 mph H 78%30.39 inHg

7:00 AM

Mostly sunny

55° 💧 None 💨 16 mph H 82%30.39 inHg

10:00 AM

Mostly cloudy

58° 💧 0.001 in 💨 18 mph H 70%30.39 inHg

1:00 PM

Mostly cloudy

62° 💧 None 💨 15 mph H 57%30.33 inHg

4:00 PM

Overcast

65° 💧 None 💨 12 mph H 51%30.27 inHg

7:00 PM

Mostly cloudy night

63° 💧 None 💨 12 mph H 53%30.24 inHg

10:00 PM

Mostly cloudy night

60° 💧 None 💨 15 mph H 52%30.24 inHg

Friday

1:00 AM

Partly cloudy night

57° 💧 None 💨 11 mph H 69%30.21 inHg

4:00 AM

Mostly cloudy night

57° 💧 None 💨 12 mph H 73%30.18 inHg

7:00 AM

Overcast

58° 💧 None 💨 12 mph H 74%30.18 inHg

Today

10:00 AM

Overcast

60° 💧 0.003 in 💨 19 mph H 72%30.42 inHg

11:00 AM

Light rain

61° 💧 0.006 in 💨 19 mph H 71%30.45 inHg

12:00 PM

Overcast

63° 💧 0.004 in 💨 20 mph H 64%30.45 inHg

1:00 PM

Overcast

65° 💧 None 💨 19 mph H 59%30.42 inHg

2:00 PM

Mostly cloudy

65° 💧 None 💨 18 mph H 57%30.42 inHg

3:00 PM

Overcast

66° 💧 None 💨 18 mph H 54%30.42 inHg

4:00 PM

Mostly sunny

65° 💧 None 💨 19 mph H 52%30.39 inHg

5:00 PM

Mostly sunny

65° 💧 None 💨 19 mph H 52%30.39 inHg

6:00 PM

Mostly sunny

64° 💧 None 💨 18 mph H 56%30.42 inHg

7:00 PM

Clear night

62° 💧 None 💨 18 mph H 58%30.42 inHg

8:00 PM

Clear night

61° 💧 None 💨 19 mph H 59%30.42 inHg

9:00 PM

Clear night

59° 💧 None 💨 19 mph H 59%30.45 inHg

10:00 PM

Clear night

58° 💧 None 💨 18 mph H 60%30.45 inHg

11:00 PM

Clear night

58° 💧 None 💨 18 mph H 63%30.45 inHg

Tomorrow

12:00 AM

Clear night

57° 💧 None 💨 17 mph H 65%30.42 inHg

1:00 AM

Partly cloudy night

56° 💧 None 💨 16 mph H 68%30.42 inHg

2:00 AM

Overcast night

56° 💧 None 💨 16 mph H 72%30.39 inHg

3:00 AM

Overcast night

56° 💧 None 💨 16 mph H 76%30.39 inHg

4:00 AM

Mostly cloudy night

56° 💧 None 💨 17 mph H 78%30.39 inHg

5:00 AM

Mostly clear night

55° 💧 None 💨 17 mph H 80%30.39 inHg

6:00 AM

Mostly clear night

55° 💧 None 💨 15 mph H 82%30.39 inHg

7:00 AM

Mostly sunny

55° 💧 None 💨 16 mph H 82%30.39 inHg

8:00 AM

Mostly sunny

55° 💧 None 💨 17 mph H 80%30.39 inHg

9:00 AM

Mostly sunny

56° 💧 None 💨 17 mph H 75%30.39 inHg

10:00 AM

Mostly cloudy

58° 💧 None 💨 18 mph H 70%30.39 inHg

11:00 AM

Mostly cloudy

59° 💧 0.001 in 💨 17 mph H 66%30.36 inHg

12:00 PM

Mostly cloudy

61° 💧 0.001 in 💨 16 mph H 62%30.36 inHg

1:00 PM

Mostly cloudy

62° 💧 None 💨 15 mph H 57%30.33 inHg

2:00 PM

Mostly cloudy

64° 💧 None 💨 14 mph H 52%30.30 inHg

3:00 PM

Mostly cloudy

64° 💧 None 💨 13 mph H 53%30.27 inHg

4:00 PM

Overcast

65° 💧 None 💨 12 mph H 51%30.27 inHg

5:00 PM

Overcast

65° 💧 None 💨 12 mph H 52%30.27 inHg

6:00 PM

Overcast

64° 💧 None 💨 12 mph H 53%30.27 inHg

7:00 PM

Mostly cloudy night

63° 💧 None 💨 12 mph H 53%30.24 inHg

8:00 PM

Mostly cloudy night

63° 💧 None 💨 14 mph H 52%30.24 inHg

9:00 PM

Mostly cloudy night

61° 💧 None 💨 15 mph H 51%30.24 inHg

10:00 PM

Mostly cloudy night

60° 💧 None 💨 15 mph H 52%30.24 inHg

11:00 PM

Overcast night

59° 💧 None 💨 13 mph H 58%30.24 inHg

Friday

12:00 AM

Mostly cloudy night

58° 💧 None 💨 12 mph H 64%30.21 inHg

1:00 AM

Partly cloudy night

57° 💧 None 💨 11 mph H 69%30.21 inHg

2:00 AM

Mostly clear night

56° 💧 None 💨 11 mph H 73%30.21 inHg

3:00 AM

Mostly cloudy night

57° 💧 None 💨 12 mph H 73%30.18 inHg

4:00 AM

Mostly cloudy night

57° 💧 None 💨 12 mph H 73%30.18 inHg

5:00 AM

Overcast night

58° 💧 None 💨 12 mph H 74%30.18 inHg

6:00 AM

Mostly cloudy night

58° 💧 None 💨 12 mph H 73%30.18 inHg

7:00 AM

Overcast

58° 💧 None 💨 12 mph H 74%30.18 inHg

8:00 AM

Mostly cloudy

59° 💧 None 💨 12 mph H 73%30.18 inHg

9:00 AM

Mostly cloudy

60° 💧 None 💨 12 mph H 69%30.18 inHg

10:00 AM

Partly cloudy

62° 💧 None 💨 13 mph H 66%30.18 inHg

11:00 AM

Mostly cloudy

64° 💧 None 💨 15 mph H 61%30.18 inHg

12:00 PM

Overcast

66° 💧 None 💨 14 mph H 56%30.15 inHg

1:00 PM

Overcast

68° 💧 None 💨 13 mph H 52%30.15 inHg

2:00 PM

Overcast

69° 💧 None 💨 12 mph H 52%30.12 inHg

3:00 PM

Overcast

69° 💧 None 💨 11 mph H 53%30.12 inHg

4:00 PM

Overcast

70° 💧 None 💨 12 mph H 54%30.09 inHg

5:00 PM

Overcast

70° 💧 None 💨 10 mph H 55%30.12 inHg

6:00 PM

Overcast

69° 💧 None 💨 10 mph H 56%30.12 inHg

7:00 PM

Overcast night

67° 💧 None 💨 9 mph H 61%30.12 inHg

8:00 PM

Overcast night

66° 💧 None 💨 9 mph H 63%30.12 inHg

Saturday

5:00 AM

Overcast night

62° 💧 None 💨 11 mph H 56%29.94 inHg

8:00 AM

Overcast

62° 💧 None 💨 10 mph H 58%29.94 inHg

11:00 AM

Overcast

62° 💧 None 💨 11 mph H 62%29.91 inHg

2:00 PM

Light rain

61° 💧 None 💨 13 mph H 74%29.85 inHg

5:00 PM

Moderate rain

56° 💧 None 💨 14 mph H 89%29.83 inHg

8:00 PM

Moderate rain

55° 💧 None 💨 16 mph H 93%29.77 inHg

11:00 PM

Moderate rain

56° 💧 None 💨 18 mph H 91%29.71 inHg

Sunday

2:00 AM

Moderate rain

55° 💧 None 💨 18 mph H 89%29.62 inHg

5:00 AM

Moderate rain

56° 💧 None 💨 18 mph H 91%29.62 inHg

8:00 AM

Light rain

56° 💧 None 💨 16 mph H 91%29.65 inHg

11:00 AM

Light rain

58° 💧 None 💨 13 mph H 87%29.68 inHg

2:00 PM

Light rain

60° 💧 None 💨 11 mph H 83%29.71 inHg

5:00 PM

Light rain

60° 💧 None 💨 11 mph H 84%29.71 inHg

8:00 PM

Overcast night

59° 💧 None 💨 11 mph H 83%29.77 inHg

11:00 PM

Overcast night

58° 💧 None 💨 10 mph H 88%29.77 inHg

Monday

2:00 AM

Light rain

57° 💧 None 💨 9 mph H 91%29.74 inHg

5:00 AM

Overcast night

56° 💧 None 💨 9 mph H 93%29.77 inHg

8:00 AM

Overcast

57° 💧 None 💨 9 mph H 89%29.80 inHg

11:00 AM

Overcast

61° 💧 None 💨 7 mph H 80%29.80 inHg

2:00 PM

Light rain

67° 💧 None 💨 7 mph H 69%29.80 inHg

5:00 PM

Overcast

66° 💧 None 💨 2 mph H 75%29.83 inHg

8:00 PM

Overcast night

62° 💧 None 💨 3 mph H 89%29.85 inHg

11:00 PM

Mostly clear night

60° 💧 None 💨 2 mph H 91%29.85 inHg

Tuesday

2:00 AM

Partly cloudy night

57° 💧 None 💨 1 mph H 96%29.85 inHg

8:00 AM

Mostly cloudy

58° 💧 None 💨 3 mph H 92%29.91 inHg

2:00 PM

Mostly sunny

58° 💧 None 💨 4 mph H 92%29.97 inHg

8:00 PM

Overcast night

69° 💧 None 💨 5 mph H 63%29.97 inHg

Wednesday

2:00 AM

Clear night

62° 💧 None 💨 1 mph H 83%30.00 inHg

8:00 AM

Sunny

58° 💧 None 💨 3 mph H 95%30.06 inHg

2:00 PM

Sunny

60° 💧 None 💨 5 mph H 95%30.09 inHg

8:00 PM

Clear night

72° 💧 None 💨 6 mph H 66%30.09 inHg

Thursday

2:00 AM

Mostly clear night

64° 💧 None 💨 7 mph H 83%30.06 inHg

8:00 AM

Sunny

65° 💧 None 💨 6 mph H 93%30.06 inHg

2:00 PM

Sunny

66° 💧 None 💨 8 mph H 92%30.06 inHg

8:00 PM

Mostly clear night

74° 💧 None 💨 10 mph H 66%30.00 inHg

Friday

2:00 AM

Mostly cloudy night

69° 💧 None 💨 11 mph H 81%29.94 inHg

8:00 AM

Moderate rain

69° 💧 None 💨 12 mph H 90%29.88 inHg

2:00 PM

Moderate rain

68° 💧 None 💨 9 mph H 98%29.83 inHg

8:00 PM

Heavy rain

69° 💧 None 💨 7 mph H 98%29.77 inHg

Saturday

2:00 AM

Mostly cloudy night

67° 💧 None 💨 3 mph H 99%29.77 inHg

8:00 AM

Sunny

61° 💧 None 💨 7 mph H 79%29.83 inHg

2:00 PM

Sunny

57° 💧 None 💨 6 mph H 89%29.94 inHg

8:00 PM

Clear night

67° 💧 None 💨 8 mph H 50%29.97 inHg

Sunday

2:00 AM

Mostly clear night

59° 💧 None 💨 6 mph H 64%30.06 inHg

8:00 AM

Sunny

51° 💧 None 💨 4 mph H 78%30.18 inHg

2:00 PM

Sunny

50° 💧 None 💨 4 mph H 82%30.27 inHg

8:00 PM

Mostly cloudy night

61° 💧 None 💨 5 mph H 50%30.24 inHg

Monday

2:00 AM

Mostly clear night

54° 💧 None 💨 1 mph H 72%30.24 inHg

8:00 AM

Overcast

51° 💧 None 💨 3 mph H 81%30.24 inHg

2:00 PM

Sunny

51° 💧 None 💨 4 mph H 87%30.24 inHg

8:00 PM

Overcast night

64° 💧 None 💨 4 mph H 48%30.21 inHg

Tuesday

2:00 AM

Clear night

56° 💧 None 💨 4 mph H 75%30.18 inHg

8:00 AM

Mostly sunny

54° 💧 None 💨 4 mph H 86%30.18 inHg

2:00 PM

Sunny

54° 💧 None 💨 5 mph H 86%30.15 inHg

8:00 PM

Clear night

66° 💧 None 💨 9 mph H 66%30.03 inHg

Wednesday

2:00 AM

Clear night

63° 💧 None 💨 10 mph H 85%29.94 inHg

8:00 AM

Partly cloudy

61° 💧 None 💨 8 mph H 84%29.83 inHg

2:00 PM

Mostly sunny

61° 💧 None 💨 6 mph H 86%29.74 inHg

8:00 PM

Light rain

68° 💧 None 💨 5 mph H 75%29.65 inHg

Thursday

2:00 AM

Mostly clear night

59° 💧 None 💨 4 mph H 62%29.71 inHg

In Cold Spring Harbor and, more broadly, across the state of New York: This morning, the sky is mostly cloudy with temperatures starting off in the mid-50s. It will remain cool through the day, with highs reaching the upper 50s to low 60s. Conditions are expected to stay dry, so no rain is forecast. Winds will be light from the northeast, generally around 8 mph, with occasional gusts up to 18 mph. In the afternoon, the clouds may persist, but overall, it should stay dry and relatively calm. Temperatures will remain cool, making it a good day to dress in layers if you're heading outside. No significant weather impacts are anticipated, and conditions will be fairly stable throughout the day.

15-Day Weather Outlook for Cold Spring Harbor

TomorrowTomorrow

Partly cloudy 65°/55° 💧 None 💨 18 mph

Friday, Sep 25Fri Sep 25

Mostly cloudy 70°/56° 💧 0.010 in 💨 15 mph

Saturday, Sep 26Sat Sep 26

Light rain 68°/59° 💧 0.071 in 💨 13 mph

Sunday, Sep 27Sun Sep 27

Moderate rain 59°/55° 💧 0.687 in 💨 15 mph

Monday, Sep 28Mon Sep 28

Light rain 67°/54° 💧 0.060 in 💨 9 mph

Tuesday, Sep 29Tue Sep 29

Overcast 69°/58° 💧 0.005 in 💨 5 mph

Wednesday, Sep 30Wed Sep 30

Mostly sunny 72°/58° 💧 None 💨 7 mph

Thursday, Oct 1Thu Oct 1

Mostly sunny 74°/65° 💧 None 💨 11 mph

Friday, Oct 2Fri Oct 2

Heavy rain 69°/67° 💧 2.228 in 💨 12 mph

Saturday, Oct 3Sat Oct 3

Mostly sunny 67°/57° 💧 None 💨 8 mph

Sunday, Oct 4Sun Oct 4

Mostly cloudy 61°/50° 💧 None 💨 5 mph

Monday, Oct 5Mon Oct 5

Overcast 64°/51° 💧 None 💨 4 mph

Tuesday, Oct 6Tue Oct 6

Mostly sunny 66°/54° 💧 None 💨 10 mph

Wednesday, Oct 7Wed Oct 7

Light rain 68°/59° 💧 0.169 in 💨 8 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Cold Spring Harbor

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Cold Spring Harbor

Hourly forecast · Updated every 2 hours

Good

Nearest forecast value 10:00 AM

PM2.5 Fine particles Good 2,2µg/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 10,4µg/m³

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

O₃ Ozone Good 58,1µg/m³

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

NO₂ Nitrogen dioxide Good 2,4µg/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 Cold Spring Harbor

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 4,3Moderate 😊Good

Tomorrow UV 4,8Moderate 🙂Fair

Friday UV 5,0Moderate 😐Moderate

Saturday UV 3,1Moderate 🙂Fair

Sunday UV 6,0High 🙂Fair

Monday UV 6,0High —Unavailable

Tuesday UV 6,0High —Unavailable

Hourly UV index today

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

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

Moderate UV risk

Sunglasses and sun protection are recommended for prolonged exposure.

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 Cold Spring Harbor

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · COLD SPRING HARBOR, NEW YORK

Tonight's Stargazing & Shooting Stars

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

85/100Best-hour score

BEST TIME TONIGHT 5:00 AM–6:00 AM Astronomical darkness: 8:21 PM–5:11 AM

☁ Cloud cover 21% Real hourly forecast for the best viewing hour.

☾ Moonlight 94% Waxing Gibbous · Moon below the horizon at the best viewing hour.

☄ Meteor activity Southern Taurids Reference ZHR 7 · Radiant 62° 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 min67%

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

SEP 20–NOV 20

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

ACTIVE NOW

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

NOV 6–NOV 30

LeonidsStart NOV 6 · Peak NOV 17 · End NOV 30 · ZHR 15 · 52% 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.

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Forecast data for Cold Spring Harbor were last refreshed today at 9:02 AM. The current forecast period extends through 25/09/2026 at 7:00 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.