Observed 12:15 AM EDT at KISP

Hauppauge, NY weather

Clear and 39°4°.

Mostly agree

Now 39°4°

Clear

Wind: 3 mph5 km/h; From the north. Light through 12 PM
Dew point: 36°2°; Comfortable
UV index: 0Low; Moderate 11 AM–4 PM · peak 4
Air today: 52Moderate; EPA forecast · PM2.5 (fine particles)
Pressure: 30.54 inHg1034 hPa; Steady over the next 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

Low 38°3° tonight at 5 AM
Above 50°10° today by 10 AM
High 63°17° today at 3 PM
Below 50°10° tonight after 9 PM

TonightDown to 38°3° by 5 AM · Clear
This morningUp to 56°13° by 11 AM · Clear
This afternoonUp to 63°17° by 3 PM · Clear
TonightDown to 42°6° by 4 AM · Clear
Tomorrow morningUp to 56°13° by 11 AM · Clear
Tomorrow afternoonUp to 66°19° by 3 PM · Clear
Tomorrow nightDown to 55°13° by 10 PM · Clear

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Sun 12a	Clear	43°6° (likely 40°4° to 47°8°)	43°6°	0%	1 mph2 km/h from NW, gusts 4 mph7 km/h	82%	2%	0
Sun 1a	Clear	42°6° (likely 41°5° to 46°8°)	42°6°	0%	2 mph3 km/h from NW, gusts 3 mph6 km/h	82%	8%	0
Sun 2a	Clear	40°4° (likely 40°4° to 46°8°)	40°4°	0%	2 mph3 km/h from NW, gusts 6 mph9 km/h	89%	0%	0
Sun 3a	Clear	40°4° (likely 40°4° to 46°8°)	40°4°	0%	2 mph3 km/h from NW, gusts 6 mph10 km/h	89%	2%	0
Sun 4a	Clear	40°4° (likely 40°4° to 46°8°)	40°4°	0%	2 mph3 km/h from N, gusts 7 mph11 km/h	89%	1%	0
Sun 5a	Clear	38°3° (likely 38°3° to 46°8°)	38°3°	0%	2 mph3 km/h from N, gusts 7 mph11 km/h	96%	1%	0
Sun 6a	Clear	39°4° (likely 39°4° to 46°8°)	39°4°	0%	2 mph3 km/h from N, gusts 6 mph10 km/h	92%	1%	0
Sun 7a	Sunny	39°4° (likely 39°4° to 46°8°)	37°3°	0%	3 mph5 km/h from N, gusts 6 mph9 km/h	92%	1%	0
Sun 8a	Sunny	40°4° (likely 39°4° to 46°8°)	38°3°	0%	3 mph5 km/h from N, gusts 5 mph9 km/h	92%	1%	0
Sun 9a	Sunny	47°8° (likely 45°7° to 49°9°)	46°8°	0%	3 mph5 km/h from N, gusts 5 mph7 km/h	74%	1%	1
Sun 10a	Sunny	52°11° (likely 52°11° to 56°13°)	52°11°	0%	3 mph5 km/h from N, gusts 5 mph8 km/h	61%	1%	2
Sun 11a	Sunny	56°13° (likely 56°13° to 59°15°)	56°13°	0%	3 mph5 km/h from N, gusts 5 mph8 km/h	55%	0%	3
Sun 12p	Sunny	59°15° (likely 59°15° to 62°17°)	59°15°	0%	3 mph5 km/h from N, gusts 5 mph7 km/h	47%	0%	4
Sun 1p	Sunny	61°16° (likely 61°16° to 65°18°)	61°16°	0%	3 mph5 km/h from NW, gusts 5 mph8 km/h	42%	0%	4
Sun 2p	Sunny	62°17° (likely 62°17° to 66°19°)	62°17°	0%	3 mph5 km/h from NW, gusts 6 mph10 km/h	39%	0%	4
Sun 3p	Sunny	63°17° (likely 63°17° to 67°19°)	63°17°	0%	3 mph5 km/h from W, gusts 7 mph11 km/h	38%	0%	3
Sun 4p	Sunny	63°17° (likely 63°17° to 66°19°)	63°17°	0%	3 mph5 km/h from SW, gusts 7 mph12 km/h	39%	0%	2
Sun 5p	Sunny	62°17° (likely 60°16° to 65°18°)	62°17°	0%	3 mph5 km/h from SW, gusts 8 mph13 km/h	43%	0%	1
Sun 6p	Clear	59°15° (likely 55°13° to 59°15°)	59°15°	0%	3 mph5 km/h from SW, gusts 8 mph13 km/h	49%	0%	0
Sun 7p	Clear	56°13° (likely 52°11° to 56°13°)	56°13°	0%	3 mph5 km/h from SW, gusts 10 mph15 km/h	57%	0%	0
Sun 8p	Clear	50°10° (likely 49°9° to 54°12°)	49°9°	0%	3 mph5 km/h from SW, gusts 9 mph15 km/h	74%	0%	0
Sun 9p	Clear	49°9° (likely 48°9° to 53°12°)	48°9°	0%	3 mph5 km/h from SW, gusts 9 mph15 km/h	80%	0%	0
Sun 10p	Clear	48°9° (likely 47°8° to 53°12°)	47°8°	0%	3 mph5 km/h from SW, gusts 10 mph15 km/h	86%	1%	0
Sun 11p	Clear	46°8° (likely 46°8° to 52°11°)	45°7°	0%	3 mph5 km/h from SW, gusts 9 mph15 km/h	93%	2%	0
Mon 12a	Clear	45°7° (likely 45°7° to 52°11°)	44°7°	0%	3 mph5 km/h from W, gusts 11 mph17 km/h	96%	1%	0
Mon 1a	Clear	45°7° (likely 45°7° to 51°11°)	44°7°	0%	3 mph5 km/h from W, gusts 11 mph18 km/h	93%	1%	0
Mon 2a	Clear	44°7° (likely 44°7° to 50°10°)	42°6°	0%	3 mph5 km/h from W, gusts 11 mph18 km/h	96%	2%	0
Mon 3a	Clear	43°6° (likely 43°6° to 49°9°)	41°5°	0%	3 mph5 km/h from W, gusts 10 mph16 km/h	96%	0%	0
Mon 4a	Clear	42°6° (likely 42°6° to 48°9°)	39°4°	0%	5 mph8 km/h from W, gusts 11 mph18 km/h	96%	0%	0
Mon 5a	Clear	42°6° (likely 42°6° to 48°9°)	39°4°	0%	5 mph8 km/h from W, gusts 11 mph17 km/h	96%	3%	0
Mon 6a	Clear	40°4° (likely 40°4° to 48°9°)	37°3°	0%	5 mph8 km/h from W, gusts 11 mph17 km/h	100%	0%	0
Mon 7a	Sunny	41°5° (likely 41°5° to 47°8°)	38°3°	0%	5 mph8 km/h from W, gusts 11 mph17 km/h	100%	0%	0
Mon 8a	Sunny	42°6° (likely 41°5° to 48°9°)	39°4°	0%	5 mph8 km/h from W, gusts 9 mph15 km/h	96%	3%	0
Mon 9a	Sunny	47°8° (likely 47°8° to 51°11°)	45°7°	0%	5 mph8 km/h from W, gusts 11 mph17 km/h	83%	6%	1
Mon 10a	Sunny	52°11° (likely 52°11° to 56°13°)	52°11°	0%	6 mph10 km/h from W, gusts 11 mph18 km/h	74%	0%	2
Mon 11a	Sunny	56°13° (likely 56°13° to 60°16°)	56°13°	0%	6 mph10 km/h from W, gusts 11 mph18 km/h	66%	0%	3
Mon 12p	Sunny	60°16° (likely 60°16° to 64°18°)	60°16°	0%	6 mph10 km/h from W, gusts 12 mph19 km/h	60%	6%	4
Mon 1p	Sunny	63°17° (likely 63°17° to 66°19°)	63°17°	0%	7 mph11 km/h from W, gusts 11 mph18 km/h	54%	9%	4
Mon 2p	Sunny	65°18° (likely 65°18° to 68°20°)	65°18°	0%	7 mph11 km/h from W, gusts 10 mph17 km/h	50%	0%	4
Mon 3p	Sunny	66°19° (likely 66°19° to 69°21°)	66°19°	0%	7 mph11 km/h from W, gusts 12 mph19 km/h	50%	0%	3
Mon 4p	Sunny	66°19° (likely 66°19° to 69°21°)	66°19°	0%	6 mph10 km/h from W, gusts 12 mph19 km/h	50%	0%	2
Mon 5p	Sunny	65°18° (likely 65°18° to 68°20°)	65°18°	0%	6 mph10 km/h from W, gusts 11 mph18 km/h	54%	0%	1
Mon 6p	Clear	63°17° (likely 62°17° to 64°18°)	63°17°	0%	6 mph10 km/h from W, gusts 7 mph11 km/h	58%	0%	0
Mon 7p	Clear	60°16° (likely 58°14° to 61°16°)	60°16°	0%	5 mph8 km/h from W, gusts 8 mph12 km/h	64%	0%	0
Mon 8p	Clear	57°14° (likely 55°13° to 61°16°)	57°14°	0%	5 mph8 km/h from W, gusts 10 mph16 km/h	72%	1%	0
Mon 9p	Clear	56°13° (likely 54°12° to 62°17°)	56°13°	0%	5 mph8 km/h from W, gusts 12 mph19 km/h	77%	2%	0
Mon 10p	Clear	55°13° (likely 54°12° to 61°16°)	55°13°	0%	5 mph8 km/h from NW, gusts 10 mph16 km/h	80%	2%	0
Mon 11p	Clear	55°13° (likely 55°13° to 60°16°)	55°13°	0%	5 mph8 km/h from NW, gusts 10 mph16 km/h	83%	7%	0

Days ahead

Shaded: typical range for these dates (1991–2020)

Today, Oct 25. Sunny. High 63°17°, low 38°3°. Typical 61°16° / 44°7°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 40°4°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 63°17°
  Dry
3. Evening
  6 PM–midnight
  Clear, 50°10°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 42°6°
  Dry
Official NWS forecast
Today: Sunny, with a high near 63. Northwest wind around 3 mph.
Tonight: Patchy frost after 5am. Clear, with a low around 38. Northwest wind around 2 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
63°17°–67°19°
Low, likely
38°3°–45°7°
Typical high / low
61°16° / 44°7°
Wind
7 mph11 km/h, gusts 13 mph21 km/h
UV peak
4
Tomorrow, Oct 26. Sunny. High 66°19°, low 49°9°. Typical 61°16° / 44°7°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 42°6°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 66°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 57°14°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 54°12°
  Dry
Official NWS forecast
Day: Sunny, with a high near 66. West wind around 7 mph.
Night: Clear, with a low around 49. Northwest wind 5 to 9 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
66°19°–69°21°
Low, likely
41°5°–49°9°
Typical high / low
61°16° / 44°7°
Wind
8 mph12 km/h, gusts 21 mph34 km/h
UV peak
4
Tuesday, Oct 27. Mostly sunny. High 59°15°, low 41°5°. Typical 60°16° / 43°6°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 51°11°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 57°14°
  Dry
3. Evening
  6 PM–midnight
  Clear, 50°10°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 44°7°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 59.
Night: Mostly clear, with a low around 41.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
58°14°–59°15°
Low, likely
41°5°–51°11°
Typical high / low
60°16° / 43°6°
Wind
11 mph18 km/h, gusts 24 mph38 km/h
UV peak
4
Wednesday, Oct 28. Partly sunny. High 58°14°, low 46°8°. Typical 60°16° / 43°6°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 46°8°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 59°15°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 53°12°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 52°11°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 58.
Night: Partly cloudy, with a low around 46.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
57°14°–60°16°
Low, likely
41°5°–46°8°
Typical high / low
60°16° / 43°6°
Wind
7 mph11 km/h, gusts 16 mph26 km/h
UV peak
4
Thursday, Oct 29. Partly sunny. High 64°18°, low 51°11°. Typical 60°16° / 43°6°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 52°11°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 60°15°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 56°13°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 64.
Night: Mostly clear, with a low around 51.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
63°17°–65°18°
Low, likely
50°10°–53°12°
Typical high / low
60°16° / 43°6°
Wind
11 mph18 km/h, gusts 30 mph49 km/h
UV peak
4
Friday, Oct 30. Mostly sunny. High 68°20°, low 50°10°. Typical 59°15° / 42°6°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 55°13°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 71°21°
  Dry
3. Evening
  6 PM–midnight
  Clear, 62°17°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 53°12°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 68.
Night: Mostly clear, with a low around 50.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
68°20°–73°23°
Low, likely
50°10°–55°13°
Typical high / low
59°15° / 42°6°
Wind
10 mph15 km/h, gusts 22 mph36 km/h
UV peak
4
Saturday, Oct 31. Cloudy. High 65°18°, low 51°11°. Typical 59°15° / 42°6°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 51°11°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 55°13°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 53°12°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 65.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
61°16°–68°20°
Low, likely
49°9°–53°12°
Typical high / low
59°15° / 42°6°
Wind
9 mph14 km/h, gusts 19 mph31 km/h
UV peak
4
Sunday, Nov 1. Drizzle. High 66°19°, low 54°12°. Typical 58°14° / 42°6°. Rain 0.03 in0.8 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Partly sunny, 54°12°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 66°19°
  Dry
3. Evening
  6 PM–midnight
  Drizzle, 62°16°
  30% chance · 0.02 in0.4 mm
4. Overnight
  midnight–6 AM
  Drizzle, 62°16°
  40% chance · 0.13 in3.4 mm
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
63°17°–70°21°
Low, likely
50°10°–57°14°
Typical high / low
58°14° / 42°6°
Wind
11 mph17 km/h, gusts 27 mph43 km/h
UV peak
3
Monday, Nov 2. Drizzle. High 66°19°, low 60°16°. Typical 58°14° / 42°6°. Rain 0.32 in8.1 mm, 40% chance. Mostly agree.
1. Morning
  6 AM–noon
  Showers, 62°17°
  40% chance · 0.15 in3.8 mm
2. Afternoon
  noon–6 PM
  Showers, 65°18°
  30% chance · 0.06 in1.5 mm
3. Evening
  6 PM–midnight
  Drizzle, 63°17°
  30% chance · 0.06 in1.5 mm
4. Overnight
  midnight–6 AM
  Clear, 60°15°
  20% chance · 0.19 in4.8 mm
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
63°17°–69°21°
Low, likely
58°14°–65°18°
Typical high / low
58°14° / 42°6°
Wind
22 mph35 km/h, gusts 40 mph65 km/h
Tuesday, Nov 3. Cloudy. High 65°18°, low 55°13°. Typical 58°14° / 41°5°. Rain 0.12 in3 mm, 20% chance. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 58°14°
  20% chance · 0.13 in3.3 mm
2. Afternoon
  noon–6 PM
  Sunny, 65°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 60°16°
  Dry
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
64°18°–67°19°
Low, likely
53°12°–57°14°
Typical high / low
58°14° / 41°5°
Wind
17 mph27 km/h, gusts 38 mph61 km/h
UV peak
4

10 days15 days30 days

The outlook

Today
Dry, high 63°, low 38°.
Tomorrow
Dry, high 66°, low 49°, warming up.
Tuesday
Dry, high 59°, low 41°, cooling off.
Rest of week
Mostly dry, highs 58–68°.

Want the meteorologists’ reasoning? Read the NWS forecast discussion (OKX) (opens in a new tab)

What changed since yesterday

No meaningful changes from yesterday’s forecast.

Radar

Radar data: NOAA MRMS, rendered by forecast.blue

Radar loads when scrolled into view

Full-screen radar

Rivers

NOAA river gauges within 25 mi

Long Island Sound near Bridgeport Harbor (IN MLLW)

25 mi

Below flood stage

Level: 7.3 ft

Forecast peak 9.1 ft Tue 12 PM, minor flooding

Reading from Sat 11:36 PM · NWS gauge page

Carlls River at Babylon

10 mi

Level: 0.5 ft
Flow: 15 cfs

Reading from Sat 11 PM · NWS gauge page

Flax Pond at Old Field (IN MLLW)

10 mi

Below flood stage

Level: 7.7 ft

Reading from Sat 11:24 PM · NWS gauge page

Great South Bay at Lindenhurst (IN MLLW)

13 mi

Below flood stage

Level: 2.1 ft

Reading from Sat 11 PM · NWS gauge page

For your home

What this week’s weather means for heating, cooling, pipes and fresh air.

Heating this week

About 72% less heating than a typical week.

This week 27Typical 95

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 20
h below 17°F: 0
h below 5°F: 0

47, 17 and 5°F are the test points heat pumps are rated at. About 13 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 36°F).

Open the windows?

Today, 1:00 PM–5:00 PM

Good stretch to open the windows.

Is this typical?

Islip-Li Macarthur Airport · official normals 1991–2020 · records 1963–2026

Oct 25, today vs a typical year

Today’s expected high is 2°1° warmer than typical.

Last 7 days vs normal

On average 0° warmer than normal (daily mean temperature).

−4°−2°MonOct 19
+3°+1°TueOct 20
+2°+1°WedOct 21
+4°+2°ThuOct 22
−4°−2°FriOct 23
—SatOct 24
—SunOct 25

Hauppauge weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 43 min; Losing 2 min 30 s a day; shortest Dec 21, 1 h 28 min less
Golden hour: 5:19–6:15 PM; Morning 6:58–7:53 AM
Blue hour: 6:15–6:25 PM; Morning 6:47–6:58 AM; first light 6:47 AM

Stars tonight? Fair

Clear 12:38–6:47 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

99% lit · growing

Today: sets 6:37 AM · rises 5:22 PM
Full moon: Oct 26
New moon: Nov 9

Looking north from Hauppauge. The highest point on the skyline is about 1,000 ft, 21 mi away.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.

Hauppauge, NY weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Tuesday

Rest of week

What changed since yesterday

Radar

Rivers

Long Island Sound near Bridgeport Harbor (IN MLLW)

Carlls River at Babylon

Flax Pond at Old Field (IN MLLW)

Great South Bay at Lindenhurst (IN MLLW)

For your home

Heating this week

Heat-pump hours, next 7 days

Comfort

Open the windows?

Is this typical?

Oct 25, today vs a typical year

Last 7 days vs normal

Sun & moon

Sun

Stars tonight? Fair

Moon