Hourly Weather Forecast - Chelmsford, MA

12 AM
27°F
0%
7mph
NW
Partly Cloudy
Humidity
54%
Feels like
19°F
Dew Point
12°F
1 AM
26°F
0%
8mph
NW
Partly Cloudy
Humidity
54%
Feels like
17°F
Dew Point
11°F
2 AM
25°F
0%
8mph
NW
Partly Cloudy
Humidity
53%
Feels like
16°F
Dew Point
10°F
3 AM
24°F
0%
8mph
NW
Mostly Clear
Humidity
52%
Feels like
15°F
Dew Point
9°F
4 AM
24°F
0%
7mph
NW
Clear
Humidity
52%
Feels like
15°F
Dew Point
9°F
5 AM
24°F
0%
7mph
NW
Clear
Humidity
52%
Feels like
15°F
Dew Point
8°F
6 AM
24°F
0%
6mph
NW
Clear
Humidity
52%
Feels like
16°F
Dew Point
9°F
7 AM
24°F
0%
6mph
NW
Clear
Humidity
49%
Feels like
17°F
Dew Point
8°F
7:12 AM
8 AM
26°F
0%
6mph
NW
Sunny
Humidity
47%
Feels like
19°F
Dew Point
8°F
9 AM
27°F
0%
6mph
WNW
Sunny
Humidity
43%
Feels like
21°F
Dew Point
8°F
10 AM
29°F
0%
6mph
WNW
Sunny
Humidity
41%
Feels like
23°F
Dew Point
8°F
11 AM
30°F
0%
6mph
WNW
Mostly Sunny
Humidity
39%
Feels like
25°F
Dew Point
8°F
12 PM
32°F
0%
6mph
WNW
Partly Cloudy
Humidity
38%
Feels like
26°F
Dew Point
9°F
1 PM
33°F
0%
6mph
WNW
Mostly Cloudy
Humidity
38%
Feels like
27°F
Dew Point
10°F
2 PM
33°F
0%
5mph
WNW
Partly Cloudy
Humidity
40%
Feels like
28°F
Dew Point
11°F
3 PM
32°F
0%
4mph
W
Partly Cloudy
Humidity
42%
Feels like
28°F
Dew Point
12°F
4 PM
31°F
0%
3mph
W
Partly Cloudy
Humidity
46%
Feels like
31°F
Dew Point
13°F
4:15 PM
5 PM
30°F
0%
2mph
W
Partly Cloudy
Humidity
50%
Feels like
30°F
Dew Point
14°F
6 PM
30°F
0%
2mph
W
Partly Cloudy
Humidity
52%
Feels like
30°F
Dew Point
15°F
7 PM
30°F
0%
2mph
W
Partly Cloudy
Humidity
54%
Feels like
30°F
Dew Point
15°F
8 PM
30°F
0%
2mph
W
Mostly Clear
Humidity
56%
Feels like
30°F
Dew Point
16°F
9 PM
29°F
0%
2mph
W
Mostly Clear
Humidity
57%
Feels like
29°F
Dew Point
16°F
10 PM
29°F
0%
2mph
W
Partly Cloudy
Humidity
59%
Feels like
29°F
Dew Point
16°F
11 PM
28°F
0%
2mph
W
Partly Cloudy
Humidity
62%
Feels like
28°F
Dew Point
17°F

Rain And Snow Totals Through Monday

Atmospheric River Takes Aim For Northern California

The plume of abundant moisture impacting the Northwest the last several days will focus more on Northern California later today into Monday bringing heavy rainfall and mountain snow.

NOAA, NCDC

White Christmas? What Are The Odds

Sunday's Weather Outlook

Sunday's Weather Outlook

Cold weather

During Extreme Cold: Watch for Frostbite!

Flu Update Valid For Week Ending December 13, 2025

Weekly Flu Update: Flu Spreading Hard Across U.S.

Watch vs. Warning

Flash Flood Watch and Warning Defined

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