Holtsville Weather Forecast 15 Days, Weather in Holtsville Today

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5. Weather in Holtsville for 15 days

Current weather conditions and 15 day weather forecast for Holtsville, New York, USA including weather daily high/low temperature, warnings, chance of precipitation, pressure, humidity/wind chill, rain risk, wind speed, cloud, pressure, and UV index.

Current weather conditions at Holtsville

22 December 2025 Monday 4.4 ° C / 39.9°F Sunny

Feels Like : 1.1 ° C / 34°F Humidity : % 39 Pressure : 1030 mb Wind Speed : 14.4 kmph / 8.9 miles from WNW Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 25

15 day weather forecast for Holtsville, NY, USA

Weather Forecast for next 15 Days for Holtsville including weather warnings, temperature, rain, wind speed, cloud, snow, wind speed and wind direction, pressure and UV index.
Here is weather for the next 15 days in Holtsville, New York state, US. To see the daily forecast, scroll to the table below.

Date	Weather forecast	Low temperature	High temperature	Avg. temperature	Humidity	Chance of rain	UV Index	Sun Position	Moon Position
22 December 2025 Monday	Sunny	-1.7 ° C (28.9°F)	3.8 ° C (38.8°F)	0.2 ° C (32.3°F)	% 57	0%	0.3	Sunrise:07:14 AM Sunset: 04:28 PM	Moonrise:09:25 AM Moonset: 06:51 PM Moon Phase ( Waxing Crescent )
23 December 2025 Tuesday	Moderate rain	-0.4 ° C (31.3°F)	4.7 ° C (40.5°F)	2.2 ° C (36°F)	% 84	81%	0.1	Sunrise:07:14 AM Sunset: 04:29 PM	Moonrise:09:56 AM Moonset: 07:58 PM Moon Phase ( Waxing Crescent )
24 December 2025 Wednesday	Sunny	-0.1 ° C (31.8°F)	6.7 ° C (44.1°F)	3.2 ° C (37.8°F)	% 74	0%	0.3	Sunrise:07:15 AM Sunset: 04:29 PM	Moonrise:10:22 AM Moonset: 09:05 PM Moon Phase ( Waxing Crescent )
25 December 2025 Thursday	Patchy rain nearby	2.9 ° C (37.2°F)	6.6 ° C (43.9°F)	4.9 ° C (40.8°F)	% 80	89%	0.2	Sunrise:07:15 AM Sunset: 04:30 PM	Moonrise:10:45 AM Moonset: 10:12 PM Moon Phase ( Waxing Crescent )
26 December 2025 Friday	Patchy rain nearby	0.9 ° C (33.7°F)	12.1 ° C (53.8°F)	7 ° C (44.7°F)	% 91	88%	0	Sunrise:07:16 AM Sunset: 04:31 PM	Moonrise:11:07 AM Moonset: 11:20 PM Moon Phase ( Waxing Crescent )
27 December 2025 Saturday	Sunny	-3.9 ° C (25°F)	-1.4 ° C (29.4°F)	-2.1 ° C (28.2°F)	% 41	0%	2	Sunrise:07:16 AM Sunset: 04:31 PM	Moonrise:11:29 AM Moonset: No moonset Moon Phase ( First Quarter )
28 December 2025 Sunday	Patchy rain nearby	1.2 ° C (34.1°F)	4.4 ° C (39.9°F)	3 ° C (37.4°F)	% 77	69%	1	Sunrise:07:16 AM Sunset: 04:32 PM	Moonrise:11:52 AM Moonset: 12:29 AM Moon Phase ( Waxing Gibbous )
29 December 2025 Monday	Sunny	1 ° C (33.8°F)	3.8 ° C (38.8°F)	2.2 ° C (36°F)	% 65	0%	2	Sunrise:07:16 AM Sunset: 04:33 PM	Moonrise:12:19 PM Moonset: 01:43 AM Moon Phase ( Waxing Gibbous )
30 December 2025 Tuesday	Patchy rain nearby	0.6 ° C (33°F)	2.2 ° C (36°F)	1.7 ° C (35°F)	% 74	80%	1	Sunrise:07:17 AM Sunset: 04:34 PM	Moonrise:12:52 PM Moonset: 03:00 AM Moon Phase ( Waxing Gibbous )
31 December 2025 Wednesday	Patchy rain nearby	2.6 ° C (36.7°F)	5 ° C (41.1°F)	3.8 ° C (38.9°F)	% 93	88%	1	Sunrise:07:17 AM Sunset: 04:35 PM	Moonrise:01:34 PM Moonset: 04:20 AM Moon Phase ( Waxing Gibbous )
01 January 2026 Thursday	Sunny	0.5 ° C (32.9°F)	4 ° C (39.2°F)	2.3 ° C (36.1°F)	% 74	0%	2	Sunrise:07:17 AM Sunset: 04:35 PM	Moonrise:02:28 PM Moonset: 05:39 AM Moon Phase ( Waxing Gibbous )
02 January 2026 Friday	Sunny	1.4 ° C (34.5°F)	6 ° C (42.8°F)	3.6 ° C (38.6°F)	% 75	0%	2	Sunrise:07:17 AM Sunset: 04:36 PM	Moonrise:03:35 PM Moonset: 06:50 AM Moon Phase ( Waxing Gibbous )
03 January 2026 Saturday	Sunny	3.2 ° C (37.8°F)	7.1 ° C (44.8°F)	5.3 ° C (41.5°F)	% 75	0%	3	Sunrise:07:17 AM Sunset: 04:37 PM	Moonrise:04:51 PM Moonset: 07:48 AM Moon Phase ( Full Moon )
04 January 2026 Sunday	Sunny	5.2 ° C (41.4°F)	9 ° C (48.2°F)	7.2 ° C (44.9°F)	% 90	0%	3	Sunrise:07:17 AM Sunset: 04:38 PM	Moonrise:06:10 PM Moonset: 08:34 AM Moon Phase ( Waning Gibbous )

Holtsville Weather forecasts are usually fully updated every 4 hours.

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