Hourly Weather Forecast - Chelmsford, MA

12 AM
21°F
10%
3mph
WSW
Partly Cloudy
Humidity
74%
Feels like
21°F
Dew Point
15°F
1 AM
21°F
10%
3mph
WSW
Mostly Cloudy
Humidity
76%
Feels like
21°F
Dew Point
15°F
2 AM
21°F
10%
3mph
WSW
Mostly Cloudy
Humidity
75%
Feels like
21°F
Dew Point
14°F
3 AM
21°F
10%
2mph
WSW
Cloudy
Humidity
76%
Feels like
21°F
Dew Point
14°F
4 AM
20°F
10%
2mph
WSW
Cloudy
Humidity
77%
Feels like
20°F
Dew Point
14°F
5 AM
20°F
10%
2mph
WSW
Mostly Cloudy
Humidity
77%
Feels like
20°F
Dew Point
14°F
6 AM
20°F
10%
1mph
WSW
Partly Cloudy
Humidity
80%
Feels like
20°F
Dew Point
15°F
7 AM
21°F
10%
1mph
WSW
Mostly Clear
Humidity
79%
Feels like
21°F
Dew Point
15°F
7:08 AM
8 AM
23°F
10%
1mph
W
Mostly Sunny
Humidity
74%
Feels like
23°F
Dew Point
16°F
9 AM
26°F
0%
1mph
W
Sunny
Humidity
64%
Feels like
26°F
Dew Point
16°F
10 AM
29°F
0%
1mph
W
Sunny
Humidity
58%
Feels like
29°F
Dew Point
16°F
11 AM
31°F
0%
1mph
WSW
Sunny
Humidity
53%
Feels like
31°F
Dew Point
16°F
12 PM
32°F
0%
1mph
WSW
Sunny
Humidity
51%
Feels like
32°F
Dew Point
16°F
1 PM
33°F
0%
2mph
WSW
Sunny
Humidity
50%
Feels like
33°F
Dew Point
16°F
2 PM
33°F
0%
1mph
SW
Mostly Sunny
Humidity
52%
Feels like
33°F
Dew Point
17°F
3 PM
31°F
0%
1mph
SW
Mostly Sunny
Humidity
54%
Feels like
31°F
Dew Point
17°F
4 PM
29°F
0%
1mph
SW
Partly Cloudy
Humidity
58%
Feels like
29°F
Dew Point
17°F
4:13 PM
5 PM
28°F
0%
1mph
SW
Mostly Clear
Humidity
61%
Feels like
28°F
Dew Point
16°F
6 PM
27°F
0%
1mph
SW
Partly Cloudy
Humidity
62%
Feels like
27°F
Dew Point
16°F
7 PM
27°F
0%
2mph
SSW
Mostly Cloudy
Humidity
63%
Feels like
27°F
Dew Point
16°F
8 PM
26°F
0%
2mph
SSW
Partly Cloudy
Humidity
64%
Feels like
26°F
Dew Point
16°F
9 PM
26°F
0%
3mph
SSW
Partly Cloudy
Humidity
66%
Feels like
26°F
Dew Point
16°F
10 PM
25°F
0%
3mph
SSW
Mostly Clear
Humidity
68%
Feels like
21°F
Dew Point
16°F
11 PM
25°F
0%
4mph
SSW
Mostly Clear
Humidity
69%
Feels like
20°F
Dew Point
16°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

loading ad...

Today's National Outlook

Hurricane Tracker

Allergy Forecast

Snow & Ski Forecast

Traffic Cameras

Weather Cameras

Traffic Cameras

Weather Cameras

Outdoor Sports Guide