Holtsville, NY Weather Forecast
Local 7-day forecast
Smoke then Patchy Smoke
Track current conditions, temperature changes, wind, and the full daily outlook for Holtsville, NY in one place.
Areas of smoke before 11am, then smoke and a chance of rain showers between 11am and 2pm, then patchy smoke and showers and thunderstorms. Mostly cloudy. High near 78, with temperatures falling to around 75 in the afternoon. South wind 12 to 22 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
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: Jul 17, 2026 7:10 AM EDT.
The active forecast window currently covers Jul 18 to Jul 23, 2026 for Holtsville, NY.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 18 to Jul 23, 2026
- Latest sync
- Jul 17, 2026 7:10 AM EDT
- Forecast office
- OKX
- Source
- NOAA / NWS
Daily Outlook
This Week in Holtsville
Wednesday looks like the warmest upcoming period in Holtsville at 81 degrees F.
Sunday Night is the coolest period ahead with temperatures near 69 degrees F.
The strongest winds are forecast for Saturday Night at about 17 to 24 mph SW.
Precipitation is mentioned in 7 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 17, 2026 7:10 AM EDT
- Coverage
- 6 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
Showers and thunderstorms. Mostly cloudy. Low around 73, with temperatures rising to around 75 overnight. Southwest wind 17 to 24 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
A slight chance of rain showers before 8am. Mostly sunny. High near 80, with temperatures falling to around 78 in the afternoon.
Mostly clear, with a low around 69.
Sunny, with a high near 77.
Partly cloudy, with a low around 71.
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 79. Chance of precipitation is 30%.
Showers and thunderstorms. Mostly cloudy, with a low around 73. Chance of precipitation is 80%.
Rain showers likely before 2pm, then a slight chance of showers and thunderstorms. Partly sunny, with a high near 81. Chance of precipitation is 70%.
A slight chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 71.
Sunny, with a high near 79.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Jul 18
|
Smoke then Patchy Smoke
|
78°F |
12 to 22 mph
S
|
|
Saturday Night
Jul 18
|
Showers And Thunderstorms
|
73°F |
17 to 24 mph
SW
|
|
Sunday
Jul 19
|
Slight Chance Rain Showers then Mostly Sunny
|
80°F |
10 to 17 mph
W
|
|
Sunday Night
Jul 19
|
Mostly Clear
|
69°F |
9 mph
N
|
|
Monday
Jul 20
|
Sunny
|
77°F |
5 to 12 mph
E
|
|
Monday Night
Jul 20
|
Partly Cloudy
|
71°F |
12 mph
S
|
|
Tuesday
Jul 21
|
Partly Sunny then Chance Showers And Thunderstorms
|
79°F |
10 to 20 mph
S
|
|
Tuesday Night
Jul 21
|
Showers And Thunderstorms
|
73°F |
23 mph
SW
|
|
Wednesday
Jul 22
|
Rain Showers Likely then Slight Chance Showers And Thunderstorms
|
81°F |
16 to 22 mph
SW
|
|
Wednesday Night
Jul 22
|
Slight Chance Showers And Thunderstorms
|
71°F |
15 mph
NW
|
|
Thursday
Jul 23
|
Sunny
|
79°F |
9 to 13 mph
NW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Holtsville.