Hourly Weather Forecast - Holtsville, NY

1 PM
28°F
70%
15mph
NNW
70% Chance of Heavy Snow
Humidity
66%
Feels like
16°F
Dew Point
18°F
2 PM
27°F
70%
16mph
NNW
70% Chance of Heavy Snow
Humidity
62%
Feels like
15°F
Dew Point
16°F
3 PM
27°F
10%
16mph
NW
Partly Cloudy
Humidity
59%
Feels like
14°F
Dew Point
14°F
4 PM
26°F
0%
16mph
NW
Partly Cloudy
Humidity
59%
Feels like
13°F
Dew Point
13°F
4:25 PM
5 PM
25°F
0%
17mph
NW
Partly Cloudy
Humidity
60%
Feels like
11°F
Dew Point
13°F
6 PM
24°F
0%
17mph
NW
Partly Cloudy
Humidity
59%
Feels like
10°F
Dew Point
11°F
7 PM
23°F
0%
18mph
NW
Partly Cloudy
Humidity
58%
Feels like
9°F
Dew Point
10°F
8 PM
22°F
30%
18mph
NW
30% Chance of Snow
Humidity
58%
Feels like
8°F
Dew Point
10°F
9 PM
22°F
0%
19mph
NNW
Partly Cloudy
Humidity
58%
Feels like
7°F
Dew Point
9°F
10 PM
21°F
0%
19mph
NNW
Mostly Clear
Humidity
58%
Feels like
6°F
Dew Point
8°F
11 PM
20°F
0%
19mph
NNW
Mostly Clear
Humidity
56%
Feels like
4°F
Dew Point
6°F

Wind chill temperatures Monday A.M.

Cold Weather Chills the Nation Down to the Gulf

Extreme cold paired with their wind chill values will shiver much of the nation.

Snowfall forecast through Monday evening.

Mid-Atlantic, Great Lakes Snow Piles Up

Sunday Weather Outlook

Today's Weather Outlook

How to Measure Snow via NWS

How To Measure Snow

Weekly Drought Map for December 11, 2025

Hit-or-Miss Precipitation Leads to Mixed Drought Results

A strong cold-air-damming event from March 20, 2018.

Cold Air Damming - Cause And Effects

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