Grumman, NY 14 Day Weather - WeatherWorld.com
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Grumman, NY Weather Forecast


Grumman, NY Weather Forecast Dated: 917 AM Tue Sep 15 2026
Expect a mild stretch with more clouds than sun and occasional showers over the coming period. generally humid conditions and a stable pattern will dominate.
Tuesday, September 15, 2026
Mid-Morning
61°F 16°C
Sunny
Mid-Afternoon
66°F 19°C
Sunny
Early-Evening
64°F 18°C
Cloudy
Refreshing around 66°F 19°C, sunny through the afternoon, turning cloudy this evening, with steady humidity and steady pressure. Winds turning from the ENE to the SSE at 8 mph 13 km/h.
Wednesday, September 16, 2026
Mid-Morning
65°F 18°C
Sunny
Mid-Afternoon
72°F 22°C
Overcast
Early-Evening
69°F 20°C
Overcast
Comfortable with temperatures reaching 72°F 22°C, sunny in the morning, becoming overcast through the afternoon and evening, with steady humidity and steady pressure. Winds blowing from the SE at 2 mph 3 km/h.
Thursday, September 17, 2026
Mid-Morning
71°F 21°C
Sunny
Mid-Afternoon
76°F 25°C
Sunny
Early-Evening
72°F 22°C
Partly Cloudy
Enjoyable around 76°F 25°C, sunny through the afternoon, turning cloudy this evening, with steady humidity and barometric pressure falling. Winds increasing from the SW at 6 mph 10 km/h to SSW at 15 mph 25 km/h. Gusts up to 24 mph 37 km/h.
Friday, September 18, 2026
Mid-Morning
69°F 21°C
Sunny
Mid-Afternoon
73°F 23°C
Sunny
Early-Evening
71°F 22°C
Overcast
Mild temperatures up to 73°F 23°C, sunny through the afternoon, turning cloudy this evening, with lower humidity and steady pressure. Winds out of the ESE at 6 mph 10 km/h.
Saturday, September 19, 2026
Mid-Morning
65°F 18°C
Partly Cloudy
Mid-Afternoon
72°F 22°C
Partly Cloudy
Early-Evening
71°F 22°C
Overcast
Mild with a high of 72°F 22°C, cloudy in the morning, sunny in the afternoon, and cloudy this evening, with steady humidity and barometric pressure falling. Winds shifting from the ENE to the S at 15 mph 24 km/h. Gusts up to 20 mph 33 km/h.
Sunday, September 20, 2026
Mid-Morning
72°F 22°C
Light Showers
Mid-Afternoon
78°F 26°C
Scattered Showers
Early-Evening
73°F 23°C
Sunny
Pleasant near 78°F 26°C, locally heavy downpours at times, with steady humidity and steady pressure. Winds WNW at 12 mph 19 km/h.
Monday, September 21, 2026
Mid-Morning
67°F 19°C
Overcast
Mid-Afternoon
67°F 19°C
Scattered Showers
Early-Evening
65°F 19°C
Light Showers
Comfortable at 67°F 19°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds out of the ENE at 11 mph 18 km/h.
Tuesday, September 22, 2026
Mid-Morning
64°F 18°C
Scattered Showers
Mid-Afternoon
64°F 18°C
Scattered Showers
Early-Evening
65°F 18°C
Scattered Showers
Cool with a high near 64°F 18°C, scattered downpours possible, with steady humidity and steady pressure. Winds moving from the E to the ESE at 19 mph 31 km/h. Gusts up to 24 mph 39 km/h.
Wednesday, September 23, 2026
Mid-Morning
69°F 20°C
Overcast
Mid-Afternoon
67°F 19°C
Overcast
Early-Evening
66°F 20°C
Overcast
Refreshing around 67°F 19°C, overcast throughout the day, with steady humidity and steady pressure. Winds swinging from the S to the NNE at 9 mph 14 km/h.
Thursday, September 24, 2026
Mid-Morning
65°F 18°C
Light Showers
Mid-Afternoon
63°F 17°C
Light Showers
Early-Evening
64°F 18°C
Light Showers
Mildly cool near 63°F 17°C, rounds of showers expected off and on all day, with steady humidity and steady pressure. Winds out of the NE at 10 mph 15 km/h.
Friday, September 25, 2026
Mid-Morning
68°F 20°C
Overcast
Mid-Afternoon
73°F 23°C
Sunny
Early-Evening
67°F 20°C
Overcast
Pleasant near 73°F 23°C, overcast in the morning, becoming cloudy through the afternoon and evening, with lower humidity and barometric pressure rising. Winds turning from the WSW to the NW at 14 mph 21 km/h.
Saturday, September 26, 2026
Mid-Morning
61°F 16°C
Overcast
Mid-Afternoon
64°F 18°C
Overcast
Early-Evening
64°F 18°C
Overcast
Cool with a high near 64°F 18°C, overcast throughout the day, with steady humidity and steady pressure.
Sunday, September 27, 2026
Mid-Morning
60°F 15°C
Overcast
Mid-Afternoon
67°F 19°C
Overcast
Early-Evening
65°F 18°C
Overcast
Refreshing around 67°F 19°C, overcast in the morning, partly cloudy in the afternoon, and overcast this evening, with lower humidity and barometric pressure rising. Winds N at 16 mph 26 km/h. Gusts up to 21 mph 34 km/h.
Monday, September 28, 2026
Mid-Morning
55°F 13°C
Overcast
Mid-Afternoon
60°F 16°C
Overcast
Early-Evening
59°F 15°C
Overcast
Mildly cool near 60°F 16°C, overcast throughout the day, with steady humidity and steady pressure. Winds moving from the NE to the E at 15 mph 23 km/h.
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