❮
Today Hourly 7 days 30 days August
❯

August 2026 Weather | Waltham, Massachusetts

Today 8/29
Cloudy Weather
Day 81°
Night 57°
0
Sun 8/30
Partly Sunny with Showers
Day 84°
Night 63°
55
Mon 8/31
Cloudy Weather
Day 81°
Night 64°
1

Explore U.S. Weather Trends

❄️ Coldest Cities in the U.S. – Live Temperature Rankings 🔥 Hottest Cities Today – Real-Time Heat Observations ⚠️ Active Weather Alerts – Warnings, Watches & Advisories 🌪️ Windiest Cities – Highest Sustained Wind Speeds 🌫️ Worst Air Quality – Cities with the Highest AQI 🍃 Best Air Quality – Cities with the Lowest AQI