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Current weather in Islip is broken clouds.

Where can I find the hourly weather forecast for Islip?

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

Is the weather forecast for Islip updated regularly?

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

Now · 3:54 AM

Islip Weather & Hourly Forecast

United States · New York · 11751

57°F

Mostly cloudy night

Feels like: 46°F

💧 Humidity 61% 🌡 Pressure 30.15 inHg 💨 Wind 17 mph 👁 Visibility 27.2 mi ☁ Clouds 76% ☀️ UV index 0.0 · Low 🌅 Sunrise 6:42 AM 🌇 Sunset 6:46 PM

Hourly Forecast for Islip

Today

4:00 AM

Mostly cloudy night

57° 💧 None 💨 17 mph H 61%30.15 inHg

7:00 AM

Overcast

57° 💧 None 💨 18 mph H 63%30.12 inHg

10:00 AM

Overcast

60° 💧 None 💨 19 mph H 63%30.09 inHg

1:00 PM

Overcast

65° 💧 None 💨 21 mph H 57%30.03 inHg

4:00 PM

Overcast

67° 💧 0.003 in 💨 22 mph H 53%29.97 inHg

7:00 PM

Light rain

63° 💧 0.159 in 💨 24 mph H 56%29.94 inHg

10:00 PM

Light rain

60° 💧 0.063 in 💨 22 mph H 69%29.91 inHg

Tomorrow

1:00 AM

Light rain

59° 💧 0.032 in 💨 24 mph H 73%29.85 inHg

4:00 AM

Light rain

58° 💧 0.274 in 💨 27 mph H 84%29.74 inHg

7:00 AM

Overcast

60° 💧 0.170 in 💨 26 mph H 78%29.71 inHg

10:00 AM

Light rain

58° 💧 0.301 in 💨 28 mph H 85%29.71 inHg

1:00 PM

Moderate rain

60° 💧 0.454 in 💨 26 mph H 88%29.68 inHg

4:00 PM

Moderate rain

59° 💧 0.254 in 💨 25 mph H 89%29.62 inHg

7:00 PM

Light rain

60° 💧 0.133 in 💨 25 mph H 86%29.59 inHg

10:00 PM

Light rain

59° 💧 0.448 in 💨 26 mph H 91%29.56 inHg

Sunday

1:00 AM

Light rain

59° 💧 0.050 in 💨 27 mph H 93%29.47 inHg

Today

4:00 AM

Mostly cloudy night

57° 💧 None 💨 17 mph H 61%30.15 inHg

5:00 AM

Overcast night

58° 💧 None 💨 18 mph H 62%30.12 inHg

6:00 AM

Mostly cloudy night

57° 💧 None 💨 18 mph H 63%30.09 inHg

7:00 AM

Overcast

57° 💧 None 💨 18 mph H 63%30.12 inHg

8:00 AM

Overcast

58° 💧 None 💨 19 mph H 61%30.09 inHg

9:00 AM

Overcast

59° 💧 None 💨 19 mph H 61%30.09 inHg

10:00 AM

Overcast

60° 💧 None 💨 19 mph H 63%30.09 inHg

11:00 AM

Overcast

62° 💧 None 💨 19 mph H 63%30.06 inHg

12:00 PM

Overcast

63° 💧 None 💨 21 mph H 60%30.06 inHg

1:00 PM

Overcast

65° 💧 None 💨 21 mph H 57%30.03 inHg

2:00 PM

Overcast

66° 💧 None 💨 21 mph H 56%30.00 inHg

3:00 PM

Overcast

66° 💧 None 💨 21 mph H 54%29.97 inHg

4:00 PM

Overcast

67° 💧 None 💨 22 mph H 53%29.97 inHg

5:00 PM

Overcast

67° 💧 None 💨 22 mph H 51%29.94 inHg

6:00 PM

Overcast

65° 💧 0.003 in 💨 21 mph H 52%29.94 inHg

7:00 PM

Light rain

63° 💧 0.015 in 💨 24 mph H 56%29.94 inHg

8:00 PM

Light rain

60° 💧 0.067 in 💨 24 mph H 67%29.91 inHg

9:00 PM

Light rain

59° 💧 0.076 in 💨 24 mph H 71%29.91 inHg

10:00 PM

Light rain

60° 💧 0.046 in 💨 22 mph H 69%29.91 inHg

11:00 PM

Light rain

61° 💧 0.013 in 💨 23 mph H 66%29.91 inHg

Tomorrow

12:00 AM

Light rain

60° 💧 0.005 in 💨 24 mph H 67%29.88 inHg

1:00 AM

Light rain

59° 💧 0.006 in 💨 24 mph H 73%29.85 inHg

2:00 AM

Light rain

59° 💧 0.022 in 💨 25 mph H 77%29.80 inHg

3:00 AM

Overcast night

59° 💧 0.004 in 💨 27 mph H 76%29.80 inHg

4:00 AM

Light rain

58° 💧 0.073 in 💨 27 mph H 84%29.74 inHg

5:00 AM

Moderate rain

58° 💧 0.144 in 💨 25 mph H 87%29.74 inHg

6:00 AM

Light rain

58° 💧 0.056 in 💨 27 mph H 84%29.71 inHg

7:00 AM

Overcast

60° 💧 0.001 in 💨 26 mph H 78%29.71 inHg

8:00 AM

Light rain

60° 💧 0.044 in 💨 27 mph H 75%29.71 inHg

9:00 AM

Thunderstorms

59° 💧 0.124 in 💨 25 mph H 84%29.71 inHg

10:00 AM

Light rain

58° 💧 0.071 in 💨 28 mph H 85%29.71 inHg

11:00 AM

Moderate rain

59° 💧 0.181 in 💨 25 mph H 85%29.71 inHg

12:00 PM

Light rain

60° 💧 0.048 in 💨 23 mph H 82%29.71 inHg

1:00 PM

Moderate rain

60° 💧 0.206 in 💨 26 mph H 88%29.68 inHg

2:00 PM

Moderate rain

59° 💧 0.152 in 💨 26 mph H 89%29.65 inHg

3:00 PM

Light rain

59° 💧 0.096 in 💨 24 mph H 89%29.65 inHg

4:00 PM

Moderate rain

59° 💧 0.198 in 💨 25 mph H 89%29.62 inHg

5:00 PM

Light rain

60° 💧 0.045 in 💨 24 mph H 88%29.62 inHg

6:00 PM

Light rain

60° 💧 0.011 in 💨 25 mph H 85%29.59 inHg

7:00 PM

Light rain

60° 💧 0.020 in 💨 25 mph H 86%29.59 inHg

8:00 PM

Light rain

59° 💧 0.075 in 💨 27 mph H 88%29.59 inHg

9:00 PM

Light rain

59° 💧 0.038 in 💨 26 mph H 89%29.59 inHg

10:00 PM

Light rain

59° 💧 0.066 in 💨 26 mph H 91%29.56 inHg

11:00 PM

Moderate rain

59° 💧 0.163 in 💨 29 mph H 92%29.53 inHg

Sunday

12:00 AM

Moderate rain

59° 💧 0.219 in 💨 28 mph H 92%29.50 inHg

1:00 AM

Light rain

59° 💧 0.026 in 💨 27 mph H 93%29.47 inHg

2:00 AM

Light rain

59° 💧 0.007 in 💨 28 mph H 92%29.47 inHg

3:00 AM

Light rain

60° 💧 0.017 in 💨 29 mph H 91%29.44 inHg

4:00 AM

Light rain

60° 💧 0.039 in 💨 27 mph H 92%29.44 inHg

5:00 AM

Light rain

60° 💧 0.037 in 💨 26 mph H 93%29.44 inHg

6:00 AM

Light rain

61° 💧 0.035 in 💨 27 mph H 94%29.44 inHg

7:00 AM

Light rain

62° 💧 0.059 in 💨 24 mph H 94%29.47 inHg

8:00 AM

Light rain

63° 💧 0.081 in 💨 22 mph H 94%29.50 inHg

9:00 AM

Light rain

64° 💧 0.043 in 💨 20 mph H 93%29.53 inHg

10:00 AM

Light rain

65° 💧 0.014 in 💨 18 mph H 92%29.56 inHg

11:00 AM

Light rain

66° 💧 0.008 in 💨 17 mph H 90%29.56 inHg

12:00 PM

Overcast

66° 💧 0.003 in 💨 16 mph H 89%29.59 inHg

1:00 PM

Light rain

67° 💧 0.008 in 💨 15 mph H 88%29.59 inHg

2:00 PM

Light rain

66° 💧 0.029 in 💨 14 mph H 90%29.59 inHg

3:00 PM

Light rain

66° 💧 0.031 in 💨 13 mph H 92%29.59 inHg

4:00 PM

Light rain

66° 💧 0.033 in 💨 13 mph H 91%29.62 inHg

5:00 PM

Light rain

65° 💧 0.055 in 💨 13 mph H 92%29.62 inHg

6:00 PM

Light rain

65° 💧 0.022 in 💨 11 mph H 93%29.62 inHg

7:00 PM

Light rain

65° 💧 0.010 in 💨 11 mph H 94%29.65 inHg

8:00 PM

Light rain

65° 💧 0.024 in 💨 12 mph H 95%29.65 inHg

In Islip 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 Islip

TomorrowTomorrow

Overcast 64°/57° 💧 None 💨 28 mph

Sunday, Sep 27Sun Sep 27

Light rain 59°/58° 💧 None 💨 30 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Islip

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Islip

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 4:00 AM

PM2.5 Fine particles Good 2,6µg/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 9,3µg/m³

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

O₃ Ozone Fair 81,0µg/m³

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

NO₂ Nitrogen dioxide Good 2,2µg/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 Islip

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 2,1Low 🙂Fair

Tomorrow UV 2,1Low 🙂Fair

Sunday UV 1,6Low 🙂Fair

Hourly UV index today

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

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

Low UV risk

UV radiation will be low, although basic protection is still advisable during prolonged exposure.

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 Islip

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · ISLIP, NEW YORK

Tonight's Stargazing & Shooting Stars

Local night-sky conditions and meteor activity for Jasper.

41/100Best-hour score

No good viewing window tonight Astronomical darkness exists, but current sky conditions are unfavorable.

☁ Cloud cover 76% Real hourly forecast for the best viewing hour.

☾ Moonlight 98% Full Moon · Moon about 15° above the horizon at the best viewing hour.

☄ Meteor activity Southern Taurids Reference ZHR 7 · Radiant 64° high at the best hour.

✦ Estimated visible meteors Poor visibility Meteor activity may occur above the clouds, but local viewing conditions are not suitable.

Chance ≥1 meteor in 30 minNot meaningful

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 Islip were last refreshed today at 3:54 AM. The current forecast period extends through 27/09/2026 at 1:00 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.