Hourly Weather Forecast - Waltham, MA

12 AM
34°F
20%
5mph
SW
Cloudy
Humidity
94%
Feels like
30°F
Dew Point
33°F
1 AM
34°F
30%
4mph
SW
30% Chance Light Snow
Humidity
93%
Feels like
30°F
Dew Point
32°F
2 AM
34°F
30%
4mph
SW
30% Chance of Snow
Humidity
93%
Feels like
30°F
Dew Point
32°F
3 AM
34°F
30%
4mph
SW
30% Chance of Snow
Humidity
94%
Feels like
31°F
Dew Point
33°F
4 AM
35°F
30%
4mph
SW
30% Chance Light Snow
Humidity
94%
Feels like
32°F
Dew Point
33°F
5 AM
36°F
30%
3mph
SW
30% Chance Snow Showers
Humidity
94%
Feels like
33°F
Dew Point
34°F
6 AM
36°F
30%
3mph
SW
30% Chance Snow Showers
Humidity
93%
Feels like
34°F
Dew Point
35°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

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Weekend Weather Outlook

Weekend 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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