Moriches Bay at Moriches Bay (IN MLLW)
4.2 mi- Level
- 3.1 ft
Reading from Sat 5:48 AM · NWS gauge page
1 active weather alert
Frost Advisory
Ends in 45 min
- When
- Until 9 AM EDT Saturday.
- Where
- Northeast Suffolk and Southeast Suffolk Counties.
Issued for this forecast zone · National Weather Service Upton NY
What, impacts and precautionsHide details
What
Temperatures in the mid 30s, and locally as low 25 to 30 in parts of the Pine Barrens, will result in frost formation.
Impacts
Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.
Precautionary actions
Take steps now to protect tender plants from the cold.
Areas: Northeast Suffolk; Southeast Suffolk
See it on weather.gov (opens in a new tab)
Observed 7:40 AM EDT at KHWV
Moriches, NY weather
Sunny and 34°1°.
Today: low 35°2° (likely 33°1° to 45°7°), high 60°16° (likely 59°15° to 61°16°).
Now 34°1°
Sunny
- Wind
- Calm
- Up to 5 mph8 km/h through 8 PM
- Dew point
- 34°1°
- Dry, static shocks likely
- Humidity
- 100%
- Air 34°1°, dew point 34°1° · frost likely
- UV tomorrow
- 4Moderate
- Moderate 11 AM–4 PM · peak 4
- Pressure
- 30.52 inHg1034 hPa
- Rising slowly · +0.04 inHg+1.4 hPa in 3 h
Next 2 hours
No precipitation expected in the next 2 hours.
From forecast models
Next 48 hours
Good hours for
This morningUp to 58°14° by 11 AM · Partly cloudy
This afternoonNear 60°16° · Mostly cloudy
TonightDown to 37°3° by 3 AM · Clear
Tomorrow morningUp to 57°14° by 11 AM · Clear
Tomorrow afternoonNear 60°16° · Clear
Tomorrow nightDown to 45°7° by 3 AM · Clear
| Hour | Conditions | Temperature | Feels like | Precipitation | Wind | Humidity | Cloud cover | UV index |
|---|---|---|---|---|---|---|---|---|
| Sat 8a | Mostly cloudy | 37°3° (likely 36°2° to 46°8°) | 37°3° | 0% | 3 mph5 km/h from N, gusts 7 mph11 km/h | 100% | 70% | 0 |
| Sat 9a | Mostly cloudy | 44°7° (likely 42°6° to 49°9°) | 44°7° | 0% | 3 mph5 km/h from N, gusts 8 mph13 km/h | 89% | 51% | 0 |
| Sat 10a | Partly sunny | 52°11° (likely 50°10° to 53°12°) | 52°11° | 0% | 3 mph5 km/h from N, gusts 9 mph14 km/h | 66% | 65% | 1 |
| Sat 11a | Partly sunny | 58°14° (likely 53°12° to 58°14°) | 58°14° | 0% | 3 mph5 km/h from N, gusts 7 mph12 km/h | 49% | 55% | 2 |
| Sat 12p | Mostly cloudy | 60°16° (likely 55°13° to 60°16°) | 60°16° | 0% | 5 mph8 km/h from N, gusts 7 mph11 km/h | 44% | 52% | 2 |
| Sat 1p | Mostly cloudy | 59°15° (likely 57°14° to 60°16°) | 59°15° | 0% | 5 mph8 km/h from NW, gusts 8 mph12 km/h | 44% | 60% | 2 |
| Sat 2p | Cloudy | 59°15° (likely 58°14° to 60°16°) | 59°15° | 0% | 5 mph8 km/h from NW, gusts 8 mph12 km/h | 44% | 78% | 2 |
| Sat 3p | Cloudy | 60°16° (likely 59°15° to 61°16°) | 60°16° | 0% | 5 mph8 km/h from NW, gusts 8 mph13 km/h | 39% | 77% | 2 |
| Sat 4p | Cloudy | 60°16° (likely 58°14° to 61°16°) | 60°16° | 0% | 5 mph8 km/h from W, gusts 8 mph13 km/h | 39% | 66% | 1 |
| Sat 5p | Mostly sunny | 59°15° (likely 57°14° to 59°15°) | 59°15° | 0% | 3 mph5 km/h from W, gusts 8 mph12 km/h | 44% | 39% | 0 |
| Sat 6p | Partly cloudy | 54°12° (likely 52°11° to 57°14°) | 54°12° | 0% | 2 mph3 km/h from W, gusts 7 mph12 km/h | 54% | 35% | 0 |
| Sat 7p | Mostly clear | 50°10° (likely 48°9° to 55°13°) | 50°10° | 0% | 2 mph3 km/h from W, gusts 7 mph11 km/h | 63% | 29% | 0 |
| Sat 8p | Clear | 46°8° (likely 45°7° to 54°12°) | 46°8° | 0% | 1 mph2 km/h from W, gusts 6 mph10 km/h | 73% | 8% | 0 |
| Sat 9p | Clear | 43°6° (likely 43°6° to 53°12°) | 43°6° | 0% | 1 mph2 km/h from W, gusts 6 mph10 km/h | 82% | 0% | 0 |
| Sat 10p | Clear | 42°6° (likely 42°6° to 52°11°) | 42°6° | 0% | 1 mph2 km/h from W, gusts 6 mph9 km/h | 86% | 0% | 0 |
| Sat 11p | Clear | 41°5° (likely 41°5° to 51°11°) | 41°5° | 0% | 1 mph2 km/h from W, gusts 5 mph8 km/h | 89% | 0% | 0 |
| Sun 12a | Clear | 40°4° (likely 40°4° to 50°10°) | 40°4° | 0% | 1 mph2 km/h from NW, gusts 5 mph8 km/h | 92% | 0% | 0 |
| Sun 1a | Clear | 39°4° (likely 39°4° to 49°9°) | 39°4° | 0% | 1 mph2 km/h from NW, gusts 8 mph14 km/h | 96% | 2% | 0 |
| Sun 2a | Clear | 39°4° (likely 39°4° to 49°9°) | 39°4° | 0% | 2 mph3 km/h from NW, gusts 9 mph14 km/h | 100% | 1% | 0 |
| Sun 3a | Clear | 37°3° (likely 37°3° to 48°9°) | 37°3° | 0% | 2 mph3 km/h from NW, gusts 9 mph15 km/h | 100% | 1% | 0 |
| Sun 4a | Clear | 37°3° (likely 37°3° to 48°9°) | 37°3° | 0% | 2 mph3 km/h from NW, gusts 9 mph14 km/h | 100% | 1% | 0 |
| Sun 5a | Clear | 37°3° (likely 37°3° to 48°9°) | 37°3° | 0% | 2 mph3 km/h from NW, gusts 8 mph13 km/h | 100% | 2% | 0 |
| Sun 6a | Clear | 37°3° (likely 37°3° to 48°9°) | 37°3° | 0% | 2 mph3 km/h from NW, gusts 7 mph11 km/h | 92% | 0% | 0 |
| Sun 7a | Sunny | 37°3° (likely 36°2° to 47°8°) | 37°3° | 0% | 2 mph3 km/h from NW, gusts 6 mph9 km/h | 92% | 3% | 0 |
| Sun 8a | Sunny | 42°6° (likely 37°3° to 48°9°) | 42°6° | 0% | 2 mph3 km/h from NW, gusts 6 mph9 km/h | 82% | 7% | 0 |
| Sun 9a | Sunny | 47°8° (likely 44°7° to 51°11°) | 47°8° | 0% | 2 mph3 km/h from NW, gusts 6 mph9 km/h | 76% | 4% | 1 |
| Sun 10a | Sunny | 53°12° (likely 53°12° to 55°13°) | 53°12° | 0% | 3 mph5 km/h from N, gusts 6 mph10 km/h | 61% | 0% | 2 |
| Sun 11a | Sunny | 57°14° (likely 57°14° to 59°15°) | 57°14° | 0% | 3 mph5 km/h from N, gusts 6 mph10 km/h | 53% | 0% | 3 |
| Sun 12p | Sunny | 60°16° (likely 59°15° to 62°17°) | 60°16° | 0% | 3 mph5 km/h from NW, gusts 6 mph9 km/h | 47% | 0% | 4 |
| Sun 1p | Sunny | 61°16° (likely 60°16° to 64°18°) | 61°16° | 0% | 3 mph5 km/h from NW, gusts 4 mph7 km/h | 44% | 0% | 4 |
| Sun 2p | Sunny | 61°16° (likely 61°16° to 65°18°) | 61°16° | 0% | 5 mph8 km/h from W, gusts 4 mph7 km/h | 44% | 0% | 4 |
| Sun 3p | Sunny | 62°17° (likely 61°16° to 66°19°) | 62°17° | 0% | 5 mph8 km/h from W, gusts 6 mph10 km/h | 43% | 0% | 3 |
| Sun 4p | Sunny | 61°16° (likely 59°15° to 65°18°) | 61°16° | 0% | 5 mph8 km/h from SW, gusts 7 mph11 km/h | 46% | 0% | 2 |
| Sun 5p | Sunny | 59°15° (likely 57°14° to 62°17°) | 59°15° | 0% | 5 mph8 km/h from SW, gusts 8 mph13 km/h | 51% | 0% | 1 |
| Sun 6p | Clear | 57°14° (likely 52°11° to 58°14°) | 57°14° | 0% | 3 mph5 km/h from SW, gusts 9 mph14 km/h | 55% | 0% | 0 |
| Sun 7p | Clear | 51°11° (likely 49°9° to 55°13°) | 51°11° | 0% | 2 mph3 km/h from SW, gusts 9 mph15 km/h | 68% | 0% | 0 |
| Sun 8p | Clear | 49°9° (likely 47°8° to 55°13°) | 49°9° | 0% | 2 mph3 km/h from SW, gusts 9 mph15 km/h | 74% | 0% | 0 |
| Sun 9p | Clear | 48°9° (likely 46°8° to 55°13°) | 48°9° | 0% | 2 mph3 km/h from SW, gusts 9 mph15 km/h | 77% | 0% | 0 |
| Sun 10p | Clear | 48°9° (likely 43°6° to 54°12°) | 48°9° | 0% | 2 mph3 km/h from SW, gusts 9 mph15 km/h | 77% | 0% | 0 |
| Sun 11p | Clear | 48°9° (likely 42°6° to 54°12°) | 48°9° | 0% | 2 mph3 km/h from SW, gusts 10 mph16 km/h | 77% | 1% | 0 |
| Mon 12a | Clear | 47°8° (likely 43°6° to 53°12°) | 47°8° | 0% | 2 mph3 km/h from W, gusts 10 mph16 km/h | 79% | 1% | 0 |
| Mon 1a | Clear | 47°8° (likely 42°6° to 52°11°) | 47°8° | 0% | 3 mph5 km/h from W, gusts 10 mph17 km/h | 79% | 2% | 0 |
| Mon 2a | Clear | 46°8° (likely 41°5° to 51°11°) | 46°8° | 0% | 3 mph5 km/h from W, gusts 12 mph19 km/h | 79% | 1% | 0 |
| Mon 3a | Clear | 45°7° (likely 42°6° to 52°11°) | 45°7° | 0% | 3 mph5 km/h from W, gusts 9 mph14 km/h | 79% | 0% | 0 |
| Mon 4a | Clear | 45°7° (likely 41°5° to 52°11°) | 43°6° | 0% | 5 mph8 km/h from W, gusts 8 mph13 km/h | 79% | 0% | 0 |
| Mon 5a | Clear | 45°7° (likely 41°5° to 51°11°) | 43°6° | 0% | 5 mph8 km/h from W, gusts 9 mph15 km/h | 79% | 0% | 0 |
| Mon 6a | Clear | 44°7° (likely 41°5° to 50°10°) | 41°5° | 0% | 5 mph8 km/h from W, gusts 9 mph14 km/h | 82% | 1% | 0 |
| Mon 7a | Sunny | 44°7° (likely 41°5° to 50°10°) | 41°5° | 0% | 5 mph8 km/h from W, gusts 10 mph16 km/h | 82% | 1% | 0 |
Days ahead
Shaded: typical range for these dates (1991–2020)
Today, Oct 24. Fog. High 60°16°, low 35°2°. Typical 61°16° / 44°7°. Dry. Mostly agree.
Morning
6 AM–noon
Partly sunny, 37°3°Dry
Afternoon
noon–6 PM
Cloudy, 60°16°Dry
Evening
6 PM–midnight
Clear, 46°8°Dry
Overnight
midnight–6 AM
Clear, 37°3°Dry
Official NWS forecast
Today: Patchy frost before 9am. Partly sunny, with a high near 60. Northwest wind around 5 mph.
Tonight: Patchy frost after midnight. Mostly clear. Low around 35, with temperatures rising to around 37 overnight. West wind around 2 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 59°15°–61°16°
- Low, likely
- 33°1°–45°7°
- Typical high / low
- 61°16° / 44°7°
- Wind
- 8 mph12 km/h
- UV peak
- 4
Tomorrow, Oct 25. Sunny. High 63°17°, low 40°4°. Typical 61°16° / 44°7°. Dry. Mostly agree.
Morning
6 AM–noon
Sunny, 42°6°Dry
Afternoon
noon–6 PM
Sunny, 62°17°Dry
Evening
6 PM–midnight
Clear, 49°9°Dry
Overnight
midnight–6 AM
Clear, 45°7°Dry
Official NWS forecast
Day: Patchy frost before 8am. Sunny. High near 63, with temperatures falling to around 59 in the afternoon. West wind around 5 mph.
Night: Clear. Low around 40, with temperatures rising to around 45 overnight. Southwest wind around 5 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 61°16°–66°19°
- Low, likely
- 36°2°–47°8°
- Typical high / low
- 61°16° / 44°7°
- Wind
- 7 mph11 km/h, gusts 14 mph23 km/h
- UV peak
- 4
Monday, Oct 26. Sunny. High 65°18°, low 45°7°. Typical 61°16° / 44°7°. Dry. Mostly agree.
Morning
6 AM–noon
Sunny, 47°8°Dry
Afternoon
noon–6 PM
Sunny, 65°18°Dry
Evening
6 PM–midnight
Clear, 56°13°Dry
Overnight
midnight–6 AM
Clear, 54°12°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny. High near 65, with temperatures falling to around 63 in the afternoon. West wind 5 to 8 mph.
Night: Mostly clear. Low around 45, with temperatures rising to around 47 overnight.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 63°17°–66°19°
- Low, likely
- 42°6°–49°9°
- Typical high / low
- 61°16° / 44°7°
- Wind
- 9 mph14 km/h, gusts 17 mph27 km/h
- UV peak
- 4
Tuesday, Oct 27. Mostly sunny. High 56°13°, low 37°3°. Typical 60°16° / 43°6°. Dry. Forecasts agree.
Morning
6 AM–noon
Sunny, 51°10°Dry
Afternoon
noon–6 PM
Sunny, 56°13°Dry
Evening
6 PM–midnight
Clear, 50°10°Dry
Overnight
midnight–6 AM
Clear, 46°8°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 56.
Night: Mostly clear, with a low around 37.
Forecasts agreeIndependent forecasts are close; the range is narrow.
- High, likely
- 56°13°–59°15°
- Low, likely
- 37°3°–50°10°
- Typical high / low
- 60°16° / 43°6°
- Wind
- 13 mph21 km/h, gusts 24 mph38 km/h
- UV peak
- 4
Wednesday, Oct 28. Partly sunny. High 57°14°, low 46°8°. Typical 60°16° / 43°6°. Dry. Mostly agree.
Morning
6 AM–noon
Sunny, 46°8°Dry
Afternoon
noon–6 PM
Cloudy, 56°13°Dry
Evening
6 PM–midnight
Cloudy, 51°11°Dry
Overnight
midnight–6 AM
Partly cloudy, 51°11°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 57.
Night: Partly cloudy, with a low around 46.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 53°12°–58°14°
- Low, likely
- 44°7°–46°8°
- Typical high / low
- 60°16° / 43°6°
- Wind
- 10 mph17 km/h
- UV peak
- 4
Thursday, Oct 29. Partly sunny. High 63°17°, low 51°11°. Typical 60°16° / 43°6°. Dry. Mostly agree.
Morning
6 AM–noon
Sunny, 52°11°Dry
Afternoon
noon–6 PM
Sunny, 61°16°Dry
Evening
6 PM–midnight
Clear, 58°14°Dry
Overnight
midnight–6 AM
Clear, 54°12°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 63.
Night: Partly cloudy, with a low around 51.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 60°16°–63°17°
- Low, likely
- 49°9°–52°11°
- Typical high / low
- 60°16° / 43°6°
- Wind
- 12 mph20 km/h, gusts 22 mph36 km/h
- UV peak
- 4
Friday, Oct 30. Partly sunny. High 65°18°, low 46°8°. Typical 59°15° / 42°6°. Dry. Mostly agree.
Morning
6 AM–noon
Sunny, 53°12°Dry
Afternoon
noon–6 PM
Sunny, 67°19°Dry
Evening
6 PM–midnight
Clear, 59°15°Dry
Overnight
midnight–6 AM
Cloudy, 54°12°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 65.
Night: Partly cloudy, with a low around 46.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 65°18°–68°20°
- Low, likely
- 46°8°–55°13°
- Typical high / low
- 59°15° / 42°6°
- Wind
- 13 mph20 km/h, gusts 26 mph41 km/h
- UV peak
- 4
Saturday, Oct 31. Cloudy. High 63°17°, low 51°11°. Typical 59°15° / 42°6°. Dry. Forecasts differ.
Morning
6 AM–noon
Sunny, 52°11°Dry
Afternoon
noon–6 PM
Sunny, 62°17°Dry
Evening
6 PM–midnight
Clear, 55°13°Dry
Overnight
midnight–6 AM
Cloudy, 54°12°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 differIndependent forecasts disagree; expect changes and plan for the range.
- High, likely
- 57°14°–69°21°
- Low, likely
- 46°8°–56°13°
- Typical high / low
- 59°15° / 42°6°
- Wind
- 15 mph25 km/h, gusts 26 mph42 km/h
- UV peak
- 4
Sunday, Nov 1. Cloudy. High 62°17°, low 54°12°. Typical 58°14° / 42°6°. Dry. Forecasts differ.
Morning
6 AM–noon
Partly sunny, 55°13°Dry
Afternoon
noon–6 PM
Sunny, 61°16°Dry
Evening
6 PM–midnight
Cloudy, 57°14°Dry
Overnight
midnight–6 AM
Cloudy, 55°13°30% chance
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
- 55°13°–66°19°
- Low, likely
- 45°7°–59°15°
- Typical high / low
- 58°14° / 42°6°
- Wind
- 12 mph19 km/h, gusts 25 mph40 km/h
- UV peak
- 4
Monday, Nov 2. Cloudy. High 61°16°, low 55°13°. Typical 58°14° / 42°6°. Rain 0.03 in0.8 mm, 30% chance. Forecasts differ.
Morning
6 AM–noon
Cloudy, 59°15°30% chance
Afternoon
noon–6 PM
Cloudy, 62°16°20% chance
Evening
6 PM–midnight
Cloudy, 57°14°20% chance
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
- 55°13°–65°18°
- Low, likely
- 47°8°–61°16°
- Typical high / low
- 58°14° / 42°6°
- Wind
- 13 mph20 km/h, gusts 21 mph34 km/h
- UV peak
- 2
The outlook
Today
Dry, high 60°, low 35°.
Tomorrow
Dry, high 63°, low 40°, warming up.
Monday
Dry, high 65°, low 45°.
Rest of week
Mostly dry, highs 56–65°.
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
Rivers
NOAA river gauges within 25 mi
Below flood stage
Great South Bay at Watch Hill (IN MLLW)
12 mi- Level
- 1.7 ft
Reading from Sat 6 AM · NWS gauge page
Peconic River at Riverhead (IN MLLW)
13 mi- Level
- 1.7 ft
Reading from Sat 5:54 AM · NWS gauge page
Shinnecock Bay at Ponquogue (IN MLLW)
17 mi- Level
- 4.4 ft
Reading from Sat 5:48 AM · NWS gauge page
For your home
What this week’s weather means for heating, cooling, pipes and fresh air.
Heating this week
About 67% less heating than a typical week.
This week 31Typical 93
Heating degree days, base 65°F
Heat-pump hours, next 7 days
- h below 47°F
- 23
- 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 11 hours are near freezing and damp, when outdoor units defrost more often.
Comfort
Dry air outside (dew point 34°F).
Open the windows?
Today, 3:00 PM–4:00 PM
Good stretch to open the windows (air quality forecast not available for part of this window).
Is this typical?
Islip-Li Macarthur Airport · official normals 1991–2020 · records 1963–2026
Oct 24, today vs a typical year
Today’s expected high is about typical for the date.
- Normal high / low
- 61°16° / 44°7°
- Forecast high / low
- 60°16° / 35°2°
- Record high
- 74°23° in 1963
- Record low
- 25°−4° in 1969
Last 7 days vs normal
On average 1° colder than normal (daily mean temperature).
- −6°−3°SunOct 18
- −4°−2°MonOct 19
- +3°+1°TueOct 20
- +2°+1°WedOct 21
- +4°+2°ThuOct 22
- −4°−2°FriOct 23
- —SatOct 24
Moriches weather by month: normals, records, snow and freeze dates
Sun & moon
Sun
Sunrise 7:12 AM, sunset 5:57 PM.
- Daylight
- 10 h 45 min
- Losing 2 min 30 s a day; shortest Dec 21, 1 h 30 min less
- Golden hour
- 5:19–6:14 PM
- Morning 6:55–7:50 AM
- Blue hour
- 6:14–6:25 PM
- Morning 6:44–6:55 AM; first light 6:44 AM
Stars tonight? Fair
Clear 8 PM–6:45 AM, but the moon is 99% lit and up.
Moon
Waxing gibbous
96% lit · growing
- Today
- sets 5:23 AM · rises 4:54 PM
- Full moon
- Oct 26
- New moon
- Nov 9
