Hourly Weather Forecast - Holtsville, NY

1 AM
44°F
0%
5mph
SSW
Mostly Clear
Humidity
83%
Feels like
41°F
Dew Point
39°F
2 AM
43°F
0%
5mph
SSW
Mostly Clear
Humidity
85%
Feels like
40°F
Dew Point
39°F
3 AM
43°F
0%
5mph
S
Mostly Clear
Humidity
86%
Feels like
41°F
Dew Point
39°F
4 AM
43°F
0%
5mph
S
Mostly Clear
Humidity
86%
Feels like
41°F
Dew Point
39°F
5 AM
43°F
0%
5mph
S
Partly Cloudy
Humidity
86%
Feels like
40°F
Dew Point
39°F
6 AM
43°F
0%
5mph
SSE
Partly Cloudy
Humidity
87%
Feels like
40°F
Dew Point
39°F
7 AM
44°F
0%
5mph
S
Partly Cloudy
Humidity
86%
Feels like
41°F
Dew Point
40°F
7:10 AM
8 AM
45°F
0%
6mph
S
Mostly Cloudy
Humidity
84%
Feels like
42°F
Dew Point
41°F
9 AM
48°F
0%
6mph
S
Mostly Cloudy
Humidity
81%
Feels like
45°F
Dew Point
42°F
10 AM
51°F
0%
6mph
S
Mostly Cloudy
Humidity
76%
Feels like
51°F
Dew Point
44°F
11 AM
53°F
0%
7mph
S
Mostly Cloudy
Humidity
72%
Feels like
53°F
Dew Point
44°F
12 PM
54°F
10%
8mph
S
Mostly Cloudy
Humidity
70%
Feels like
54°F
Dew Point
45°F
1 PM
55°F
10%
9mph
S
Mostly Cloudy
Humidity
72%
Feels like
55°F
Dew Point
46°F
2 PM
55°F
10%
10mph
S
Mostly Cloudy
Humidity
73%
Feels like
55°F
Dew Point
46°F
3 PM
55°F
10%
11mph
SSW
Partly Cloudy
Humidity
77%
Feels like
55°F
Dew Point
47°F
4 PM
54°F
30%
11mph
SSW
30% Chance of Light Rain
Humidity
78%
Feels like
54°F
Dew Point
47°F
5 PM
52°F
20%
12mph
S
Cloudy
Humidity
80%
Feels like
52°F
Dew Point
46°F
6 PM
50°F
10%
12mph
SSW
Cloudy
Humidity
84%
Feels like
50°F
Dew Point
46°F
6:54 PM
7 PM
49°F
20%
13mph
SSW
Cloudy
Humidity
88%
Feels like
44°F
Dew Point
46°F
8 PM
48°F
30%
13mph
SSW
30% Chance of Light Rain
Humidity
92%
Feels like
42°F
Dew Point
46°F
9 PM
47°F
20%
13mph
SSW
Mostly Cloudy
Humidity
94%
Feels like
42°F
Dew Point
46°F
10 PM
48°F
30%
13mph
SSW
30% Chance of Light Rain
Humidity
93%
Feels like
42°F
Dew Point
46°F
11 PM
48°F
30%
13mph
SSW
30% Chance of Light Rain
Humidity
91%
Feels like
43°F
Dew Point
46°F

Today's Severe Weather Outlook

Severe Storm Outbreak Eyes Central U.S. Tonight

A severe storm outbreak will likely occur across the Midwest, with other dangerous weather in the forecast for the nation's midsection.

Wednesday's Weather Outlook

Wednesday's Weather Outlook

Weekly Drought Map for March 5, 2026

Drought Worsens Nationwide Despite Multiple Disturbances

A tornado on the ground in Hildreth, Neb., on June 14, 2014 (NOAA Photo Library/Ken Engquist).

Tornadoes and Road Safety -- Do's and Don't's

A pothole big enough to hold a traffic cone and garbage. (David Shankbone, Wikimedia Common)

Potholes: A Springtime Driving Menace

This John Deere riding mower continues to hum along. (Wikimedia Commons)

Spring Mower and Power Tool Seasonal Checklist

loading ad...

Today's National Outlook

Hurricane Tracker

Allergy Forecast

Traffic Cameras

Weather Cameras

Traffic Cameras

Weather Cameras

Outdoor Sports Guide