Holtsville, NY Weather Forecast
Local 7-day forecast
Partly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Holtsville, NY in one place.
Partly sunny, with a high near 61.
Local Weather Overview
This forecast page for Holtsville, NY is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Apr 15, 2026 3:25 AM EDT.
The active forecast window currently covers Apr 18 to Apr 21, 2026 for Holtsville, NY.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 18 to Apr 21, 2026
- Latest sync
- Apr 15, 2026 3:25 AM EDT
- Forecast office
- OKX
- Source
- NOAA / NWS
Daily Outlook
This Week in Holtsville
Saturday looks like the warmest upcoming period in Holtsville at 61 degrees F.
Monday Night is the coolest period ahead with temperatures near 35 degrees F.
The strongest winds are forecast for Monday at about 12 to 15 mph NW.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 15, 2026 3:25 AM EDT
- Coverage
- 4 days
- Time zone
- America/New_York
- Forecast office
- OKX
- Radar station
- KOKX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A slight chance of rain showers after 2am. Mostly cloudy, with a low around 48.
A chance of rain showers before 2pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 60. Chance of precipitation is 50%.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 40. Chance of precipitation is 50%.
A chance of rain showers before 8am. Mostly sunny, with a high near 51. Chance of precipitation is 30%.
Mostly clear, with a low around 35.
Sunny, with a high near 51.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Apr 18
|
Partly Sunny
|
61°F |
5 to 8 mph
E
|
|
Saturday Night
Apr 18
|
Mostly Cloudy then Slight Chance Rain Showers
|
48°F |
7 mph
SE
|
|
Sunday
Apr 19
|
Chance Rain Showers
|
60°F |
5 to 13 mph
S
|
|
Sunday Night
Apr 19
|
Chance Showers And Thunderstorms
|
40°F |
12 mph
W
|
|
Monday
Apr 20
|
Chance Rain Showers then Mostly Sunny
|
51°F |
12 to 15 mph
NW
|
|
Monday Night
Apr 20
|
Mostly Clear
|
35°F |
9 to 13 mph
NW
|
|
Tuesday
Apr 21
|
Sunny
|
51°F |
8 to 12 mph
W
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Holtsville.