Hourly Weather Forecast - Holtsville, NY

12 AM
37°F
0%
12mph
SW
Partly Cloudy
Humidity
78%
Feels like
29°F
Dew Point
31°F
1 AM
37°F
0%
11mph
SW
Mostly Cloudy
Humidity
79%
Feels like
30°F
Dew Point
31°F
2 AM
37°F
0%
11mph
SW
Cloudy
Humidity
81%
Feels like
29°F
Dew Point
31°F
3 AM
36°F
0%
10mph
SW
Cloudy
Humidity
82%
Feels like
29°F
Dew Point
31°F
4 AM
35°F
0%
10mph
SW
Mostly Cloudy
Humidity
82%
Feels like
28°F
Dew Point
30°F
5 AM
35°F
0%
9mph
SW
Partly Cloudy
Humidity
83%
Feels like
27°F
Dew Point
30°F
6 AM
35°F
0%
9mph
SW
Partly Cloudy
Humidity
84%
Feels like
28°F
Dew Point
30°F
6:47 AM
7 AM
36°F
0%
8mph
SW
Mostly Sunny
Humidity
83%
Feels like
29°F
Dew Point
31°F
8 AM
38°F
0%
8mph
SW
Mostly Sunny
Humidity
80%
Feels like
33°F
Dew Point
33°F
9 AM
41°F
0%
8mph
SW
Partly Cloudy
Humidity
73%
Feels like
36°F
Dew Point
33°F
10 AM
44°F
0%
9mph
SW
Partly Cloudy
Humidity
66%
Feels like
39°F
Dew Point
33°F
11 AM
46°F
0%
9mph
SW
Mostly Cloudy
Humidity
62%
Feels like
41°F
Dew Point
34°F
12 PM
47°F
0%
10mph
SSW
Mostly Cloudy
Humidity
60%
Feels like
42°F
Dew Point
34°F
1 PM
47°F
0%
12mph
SSW
Partly Cloudy
Humidity
59%
Feels like
42°F
Dew Point
34°F
2 PM
47°F
0%
13mph
SSW
Partly Cloudy
Humidity
60%
Feels like
42°F
Dew Point
34°F
3 PM
47°F
0%
14mph
SSW
Partly Cloudy
Humidity
61%
Feels like
41°F
Dew Point
34°F
4 PM
46°F
0%
14mph
SSW
Mostly Cloudy
Humidity
64%
Feels like
40°F
Dew Point
34°F
5 PM
45°F
0%
14mph
SSW
Cloudy
Humidity
67%
Feels like
38°F
Dew Point
35°F
6 PM
44°F
0%
14mph
SSW
Cloudy
Humidity
70%
Feels like
37°F
Dew Point
35°F
7 PM
42°F
0%
14mph
SSW
Cloudy
Humidity
75%
Feels like
35°F
Dew Point
35°F
7:09 PM
8 PM
42°F
10%
14mph
SSW
Cloudy
Humidity
79%
Feels like
35°F
Dew Point
36°F
9 PM
42°F
10%
13mph
SSW
Cloudy
Humidity
82%
Feels like
34°F
Dew Point
36°F
10 PM
42°F
20%
13mph
SSW
Cloudy
Humidity
83%
Feels like
35°F
Dew Point
37°F
11 PM
42°F
20%
12mph
SSW
Cloudy
Humidity
85%
Feels like
35°F
Dew Point
37°F

Today's Severe Weather Outlook

Dangerous Spring Storms Take Aim at Ohio Valley, Mid-Atlantic

Spring is here and Mother Nature is set to bring dangerous thunderstorms to parts of the Great Lakes, Ohio Valley and Mid-Atlantic.

Today's High Temperature Outlook

Summer-Like Heat Bakes the Southern U.S.

Monday's Weather Outlook

Monday's Weather Outlook

Weekly Drought Map for March 19, 2026

Active Weather, Drought Improvements for Eastern Half; Drying Persists Elsewhere

(Image provided by Pixabay.com)

Lightning Safety

A tree knocked over after a storm produced high winds. (provided by PublicDomainPictures via Pixabay.com)

Strong Winds in the Springtime

loading ad...

Today's National Outlook

Hurricane Tracker

Allergy Forecast

Traffic Cameras

Weather Cameras

Traffic Cameras

Weather Cameras

Outdoor Sports Guide