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Waltham, MA Weather Forecast

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Waltham, MA Weather Forecast

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Waltham MA weather - Clear - 38°F
Clear
38°F
Updated 8:28 pm
Feels Like 36°F
Humidity 54%
Wind N 6 mph
Barometer  30.31 in
Dew Point 23°F
Waltham MA weather - Clear - 3°C
Clear
3°C
Updated 8:28 pm
Feels Like 2°C
Humidity 54%
Wind N 10 km/h
Barometer  102.6 kPa
Dew Point -5°C
WX Settings

Waltham Weather Forecast

TONIGHT SUNDAY SUNDAY NIGHT MONDAY MONDAY NIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY THURSDAY NIGHT FRIDAY
Waltham, MA Weather - Tonight Clear Waltham, MA Weather - Sunday Sunny Waltham, MA Weather - Sunday Night Clear Waltham, MA Weather - Monday Sunny Waltham, MA Weather - Monday Night Mostly Cloudy Waltham, MA Weather - Tuesday Partly Sunny Waltham, MA Weather - Tuesday Night Partly Cloudy Waltham, MA Weather - Wednesday Partly Cloudy Waltham, MA Weather - Wednesday Night Mostly Cloudy Waltham, MA Weather - Thursday Mostly Cloudy Waltham, MA Weather - Thursday Night Partly Cloudy Waltham, MA Weather - Friday Partly Cloudy
Clear Sunny Clear Sunny Mostly Cloudy Partly Sunny Partly Cloudy Partly Cloudy Mostly Cloudy Mostly Cloudy Partly Cloudy Partly Cloudy
Lo: 30°FLo: -1°C Hi: 55°FHi: 13°C
 Lo: 35°FLo: 2°C Hi: 59°FHi: 15°C
 Lo: 41°FLo: 5°C Hi: 60°FHi: 16°C
 Hi: 55°FHi: 13°C
Lo: 45°FLo: 7°C		 Hi: 55°FHi: 13°C
Lo: 45°FLo: 7°C		 Hi: 59°FHi: 15°C
Lo: 41°FLo: 5°C		 Hi: 59°FHi: 15°C
Lo: 41°FLo: 5°C		 Hi: 59°FHi: 15°C
Lo: 45°FLo: 7°C		 Hi: 59°FHi: 15°C
Lo: 45°FLo: 7°C
POP = Probability of Precipitation.
Weather Outlook Updated: 703 PM EDT Sat Oct 17 2026 Waltham, MA Weather - WeatherWorld.com

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Issued: 712 PM EDT Sat Oct 17 2026

Key Messages

  • Diminishing winds and clearing tonight with cold low temps in the 20s and 30s with widespread frost/freeze conditions. Sunshine returns on Sunday with highs in the 50s with light winds.
  • Mainly dry for the upcoming workweek except near coastal areas. Otherwise, the other big story is a modest warming trend with high pressure building in across the Northeastern United States.

Discussion

... KEY MESSAGE 1...Diminishing winds and clearing tonight with cold low temps in the 20s and 30s with...