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Ronkonkoma, NY Weather Forecast for 5-Days

Updated: Thu May 14th 2026 3:30 PM EDT

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Ronkonkoma, NY Weather – 5-14 – Moderate Rain
67° / 53°
Moderate Rain
Ronkonkoma may see rain showers, with daytime highs of 67°F and overnight lows near 53°F. The chance of rain is 84% with an estimated 0.22in. Wind will be moderate, blowing around 13mph on average and gusts of 11.5mph at 11 PM. The humidity will be on the higher side, averaging about 80%, the maximum being 92% at 11 PM and 50% being its lowest at 5 PM. Barometric pressure is its highest of 29.73inHg at 9 PM, a lowest point of 29.71inHg at 4 PM with an avg 29.72inHg.
Ronkonkoma, NY Weather – 5-15 – Scattered Showers
61° / 51°

Weather Tomorrow

Scattered Showers
Ronkonkoma may see passing showers, with daytime highs of 61°F and overnight lows near 51°F. The chance of rain is 87% with an estimated 0.05in. Winds will be light at 10mph and gusts of 14.2mph at 7 PM. The humidity will be on the higher side, averaging about 76%, the maximum being 92% at 12 AM and 59% being its lowest at 2 PM. Barometric pressure is its highest of 30.05inHg at 11 PM, a lowest point of 29.73inHg at 12 AM with an avg 29.85inHg.
Ronkonkoma, NY Weather – 5-16 – Sunny
63° / 52°
Sunny
It will be sunny in Ronkonkoma, with a high of 63°F and a low of 52°F. Wind will be moderate, blowing around 13mph on average and gusts of 24.1mph at 11 PM. The humidity will be on the higher side, averaging about 72%, the maximum being 87% at 4 AM and 57% being its lowest at 2 PM. Barometric pressure is its highest of 30.14inHg at 8 AM, a lowest point of 30.01inHg at 11 PM with an avg 30.07inHg.
Ronkonkoma, NY Weather – 5-17 – Scattered Showers
75° / 57°
Scattered Showers
Highs will reach 75°F with lows near 57°F in Ronkonkoma, where scattered showers are. The chance of rain is 89% with an estimated 0.01in. Wind will be moderate, blowing around 12mph on average and gusts of 22.9mph at 12 AM. The humidity will be on the higher side, averaging about 72%, the maximum being 85% at 4 AM and 54% being its lowest at 4 PM. Barometric pressure is its highest of 30.13inHg at 11 PM, a lowest point of 29.97inHg at 5 AM with an avg 30.04inHg.
Ronkonkoma, NY Weather – 5-18 – Scattered Showers
69° / 60°
Scattered Showers
Ronkonkoma is set for scattered showers with temperatures peaking at 69°F and dipping to 60°F. The chance of rain is 81% with an estimated 0.03in. Winds will be light at 9mph and gusts of 14.8mph at 1 PM. The humidity will be on the higher side, averaging about 77%, the maximum being 92% at 6 AM and 63% being its lowest at 11 AM. Barometric pressure is its highest of 30.21inHg at 9 AM, a lowest point of 30.13inHg at 1 AM with an avg 30.18inHg.
Ronkonkoma, NY Weather – 5-19 – Sunny
76° / 59°
Sunny
Ronkonkoma could see a sunny day with daytime highs of 76°F and nighttime lows near 59°F. Wind will be moderate, blowing around 15mph on average and gusts of 31.5mph at 11 PM. The humidity will be on the higher side, averaging about 77%, the maximum being 95% at 5 AM and 57% being its lowest at 5 PM. Barometric pressure is its highest of 30.18inHg at 1 AM, a lowest point of 30.01inHg at 5 PM with an avg 30.09inHg.

Currently

Partly Cloudy 61°F
29.72 inHg.
Barometer
78%
Humidity
SSE 5.8 mph
Wind
Partly Cloudy

5 Day Forecast Nearby

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