Lake Ronkonkoma, NY Weather Forecast
Local 7-day forecast
Mostly Cloudy
Track current conditions, temperature changes, wind, and the full daily outlook for Lake Ronkonkoma, NY in one place.
Mostly cloudy. Low around 71, with temperatures rising to around 73 overnight. West wind around 15 mph.
Local Weather Overview
This forecast page for Lake Ronkonkoma, 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 19, 2026 7:57 AM EDT.
The active forecast window currently covers Jul 19 to Jul 25, 2026 for Lake Ronkonkoma, NY.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 19 to Jul 25, 2026
- Latest sync
- Jul 19, 2026 7:57 AM EDT
- Forecast office
- OKX
- Source
- NOAA / NWS
Daily Outlook
This Week in Lake Ronkonkoma
Sunday looks like the warmest upcoming period in Lake Ronkonkoma at 79 degrees F.
Sunday Night is the coolest period ahead with temperatures near 67 degrees F.
The strongest winds are forecast for Tuesday Night at about 17 to 23 mph S.
Precipitation is mentioned in 6 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 19, 2026 7:57 AM EDT
- Coverage
- 7 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
Sunny. High near 79, with temperatures falling to around 77 in the afternoon. Northwest wind 8 to 17 mph.
Mostly clear, with a low around 67. North wind around 8 mph.
Sunny. High near 77, with temperatures falling to around 74 in the afternoon. East wind 3 to 10 mph.
Partly cloudy, with a low around 70. South wind around 10 mph.
A slight chance of rain showers between 8am and 2pm, then showers and thunderstorms likely. Mostly cloudy. High near 78, with temperatures falling to around 74 in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
Showers and thunderstorms. Cloudy, with a low around 71. Chance of precipitation is 100%.
Showers and thunderstorms. Mostly cloudy, with a high near 78. Chance of precipitation is 90%.
Showers and thunderstorms likely. Mostly cloudy, with a low around 68. Chance of precipitation is 60%.
A chance of rain showers. Mostly sunny, with a high near 75. Chance of precipitation is 30%.
A slight chance of rain showers before 2am. Mostly clear, with a low around 68.
Sunny, with a high near 76.
Partly cloudy, with a low around 69.
Mostly sunny, with a high near 76.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
Jul 19
|
Mostly Cloudy
|
71°F |
15 mph
W
|
|
Sunday
Jul 19
|
Sunny
|
79°F |
8 to 17 mph
NW
|
|
Sunday Night
Jul 19
|
Mostly Clear
|
67°F |
8 mph
N
|
|
Monday
Jul 20
|
Sunny
|
77°F |
3 to 10 mph
E
|
|
Monday Night
Jul 20
|
Partly Cloudy
|
70°F |
10 mph
S
|
|
Tuesday
Jul 21
|
Showers And Thunderstorms Likely
|
78°F |
10 to 17 mph
SE
|
|
Tuesday Night
Jul 21
|
Showers And Thunderstorms
|
71°F |
17 to 23 mph
S
|
|
Wednesday
Jul 22
|
Showers And Thunderstorms
|
78°F |
17 to 21 mph
SW
|
|
Wednesday Night
Jul 22
|
Showers And Thunderstorms Likely
|
68°F |
12 to 18 mph
W
|
|
Thursday
Jul 23
|
Chance Rain Showers
|
75°F |
8 to 12 mph
NW
|
|
Thursday Night
Jul 23
|
Slight Chance Rain Showers
|
68°F |
7 mph
W
|
|
Friday
Jul 24
|
Sunny
|
76°F |
7 mph
E
|
|
Friday Night
Jul 24
|
Partly Cloudy
|
69°F |
3 to 7 mph
SW
|
|
Saturday
Jul 25
|
Mostly Sunny
|
76°F |
3 to 9 mph
SE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Lake Ronkonkoma.