City of Waltham Weather Forecast
Local 7-day forecast
Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for City of Waltham in one place.
Mostly sunny, with a high near 76. Southwest wind 0 to 7 mph.
Local Weather Overview
This forecast page for City of Waltham is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Sep 15, 2026 7:31 AM EDT.
The active forecast window currently covers Sep 16 to Sep 21, 2026 for City of Waltham.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 16 to Sep 21, 2026
- Latest sync
- Sep 15, 2026 7:31 AM EDT
- Forecast office
- BOX
- Source
- NOAA / NWS
Daily Outlook
This Week in City of Waltham
Thursday looks like the warmest upcoming period in City of Waltham at 79 degrees F.
Friday Night is the coolest period ahead with temperatures near 53 degrees F.
The strongest winds are forecast for Sunday at about 5 to 12 mph SW.
Precipitation is mentioned in 6 upcoming forecast periods.
Forecast Details
- Last updated
- Sep 15, 2026 7:31 AM EDT
- Coverage
- 6 days
- Time zone
- America/New_York
- Forecast office
- BOX
- Radar station
- KBOX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly cloudy, with a low around 61. Southwest wind 1 to 6 mph.
Partly sunny, with a high near 79. Southwest wind 1 to 8 mph.
A slight chance of rain showers between midnight and 2am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Southwest wind around 7 mph. Chance of precipitation is 40%.
A chance of showers and thunderstorms before 8am. Mostly sunny, with a high near 79. Northwest wind around 8 mph. Chance of precipitation is 40%.
Partly cloudy, with a low around 53. North wind around 6 mph.
Mostly sunny, with a high near 69. East wind around 6 mph.
A chance of rain showers after 2am. Mostly cloudy, with a low around 55. South wind 2 to 6 mph. Chance of precipitation is 30%.
A chance of rain showers. Mostly cloudy, with a high near 74. Southwest wind 5 to 12 mph. Chance of precipitation is 50%.
A chance of rain showers. Mostly cloudy, with a low around 58. Northwest wind 6 to 10 mph. Chance of precipitation is 50%.
A chance of rain showers. Mostly cloudy, with a high near 70. Northeast wind around 9 mph.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Sep 16
|
Mostly Sunny
|
76°F |
0 to 7 mph
SW
|
|
Wednesday Night
Sep 16
|
Mostly Cloudy
|
61°F |
1 to 6 mph
SW
|
|
Thursday
Sep 17
|
Partly Sunny
|
79°F |
1 to 8 mph
SW
|
|
Thursday Night
Sep 17
|
Mostly Cloudy then Chance Showers And Thunderstorms
|
64°F |
7 mph
SW
|
|
Friday
Sep 18
|
Chance Showers And Thunderstorms then Mostly Sunny
|
79°F |
8 mph
NW
|
|
Friday Night
Sep 18
|
Partly Cloudy
|
53°F |
6 mph
N
|
|
Saturday
Sep 19
|
Mostly Sunny
|
69°F |
6 mph
E
|
|
Saturday Night
Sep 19
|
Mostly Cloudy then Chance Rain Showers
|
55°F |
2 to 6 mph
S
|
|
Sunday
Sep 20
|
Chance Rain Showers
|
74°F |
5 to 12 mph
SW
|
|
Sunday Night
Sep 20
|
Chance Rain Showers
|
58°F |
6 to 10 mph
NW
|
|
Monday
Sep 21
|
Chance Rain Showers
|
70°F |
9 mph
NE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around City of Waltham.