Hourly Weather Forecast - Holtsville, NY

12 AM
43°F
20%
10mph
S
Mostly Cloudy
Humidity
85%
Feels like
38°F
Dew Point
39°F
1 AM
43°F
10%
10mph
SSW
Mostly Cloudy
Humidity
85%
Feels like
37°F
Dew Point
38°F
2 AM
42°F
10%
10mph
SSW
Mostly Cloudy
Humidity
85%
Feels like
37°F
Dew Point
38°F
3 AM
42°F
10%
10mph
SSW
Mostly Cloudy
Humidity
85%
Feels like
36°F
Dew Point
38°F
4 AM
41°F
10%
10mph
SSW
Cloudy
Humidity
86%
Feels like
35°F
Dew Point
38°F
5 AM
41°F
10%
10mph
SW
Cloudy
Humidity
86%
Feels like
35°F
Dew Point
37°F
6 AM
40°F
10%
9mph
SW
Cloudy
Humidity
87%
Feels like
34°F
Dew Point
37°F
7 AM
41°F
10%
10mph
SW
Mostly Cloudy
Humidity
86%
Feels like
35°F
Dew Point
37°F
7:14 AM
8 AM
42°F
10%
11mph
SW
Partly Cloudy
Humidity
83%
Feels like
36°F
Dew Point
37°F
9 AM
43°F
0%
13mph
WSW
Partly Cloudy
Humidity
79%
Feels like
36°F
Dew Point
37°F
10 AM
43°F
0%
15mph
WSW
Partly Cloudy
Humidity
74%
Feels like
36°F
Dew Point
36°F
11 AM
43°F
0%
16mph
WSW
Partly Cloudy
Humidity
68%
Feels like
35°F
Dew Point
33°F
12 PM
41°F
0%
16mph
WSW
Partly Cloudy
Humidity
62%
Feels like
33°F
Dew Point
29°F
1 PM
40°F
0%
17mph
WSW
Mostly Sunny
Humidity
58%
Feels like
31°F
Dew Point
26°F
2 PM
38°F
0%
17mph
W
Mostly Sunny
Humidity
55%
Feels like
29°F
Dew Point
24°F
3 PM
37°F
0%
16mph
W
Sunny
Humidity
54%
Feels like
27°F
Dew Point
22°F
4 PM
34°F
0%
16mph
W
Sunny
Humidity
55%
Feels like
24°F
Dew Point
20°F
4:49 PM
5 PM
32°F
0%
15mph
W
Mostly Clear
Humidity
56%
Feels like
21°F
Dew Point
18°F
6 PM
31°F
0%
15mph
W
Partly Cloudy
Humidity
55%
Feels like
20°F
Dew Point
16°F
7 PM
30°F
0%
14mph
W
Partly Cloudy
Humidity
52%
Feels like
19°F
Dew Point
14°F
8 PM
29°F
0%
14mph
W
Partly Cloudy
Humidity
48%
Feels like
18°F
Dew Point
12°F
9 PM
28°F
0%
14mph
W
Mostly Clear
Humidity
48%
Feels like
16°F
Dew Point
11°F
10 PM
27°F
0%
15mph
W
Mostly Clear
Humidity
48%
Feels like
15°F
Dew Point
9°F
11 PM
26°F
30%
15mph
W
30 % Chance of Heavy Snow
Humidity
48%
Feels like
13°F
Dew Point
8°F

Snow Forecast through Thursday PM

Clipper Storms Pepper the Great Lakes to New England

The Great Lakes, Appalachia, and the Northeast will see bouts of wintry weather today through the weekend.

Wednesday's Weather Outlook

Today's Weather Outlook

(Image provided by NOAA)

Polar Vortex: What Is It?

People skating on a frozen pond on a clear day. (Image by Q K from Pixabay)

Safety Tips For Icy Surfaces

Windchill chart

Dangers of Wind Chills

A snow-covered trail in Sparkill, N.Y. (H. Martinez, WeatherBug user)

Top Winter Hiking Destinations

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