New York, NY 24° Los Angeles, CA 20° 🌤️ Chicago, IL Houston, TX 24° 🌤️ Miami, FL 🌤️ Phoenix, AZ 🌤️ Seattle, WA 🌤️ Denver, CO Toronto, ON 22° 🌤️ Vancouver, BC
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Waltham, MA Weather (02453)

ZIP codes: 02453 · 02452 · 02451
Current WeatherWaltham · 11:57 AM EDT
26° | -1°
20°C
Feels like 22°
Drizzle
WindNW 3 mph · Gusts 14 mph
Precip80% · 0.18 in
Humidity84% · Dew point 18°
UV index2 Low
Air Quality34 Good
Pressure30.33 inHg
Visibility6 mi
Sunrise / Sunset5:54 AM · 7:43 PM · 13h 49m

Weather map — Waltham

Full radar →
Now
20°
0.02 in
3 mph
12:00
21°
0.02 in
4 mph
13:00
23°
0.02 in
4 mph
14:00
25°
0.02 in
3 mph
15:00
26°
0.02 in
4 mph
16:00
4%
3 mph
17:00
6%
4 mph
18:00
24%
3 mph
19:00
23%
6 mph
20:00
28%
4 mph
21:00
13%
4 mph
22:00
-1°
24%
5 mph
23:00
-1°
25%
4 mph
00:00
-1°
10%
4 mph
01:00
-1°
10%
5 mph
02:00
-1°
8%
4 mph
03:00
-1°
19%
6 mph
04:00
-1°
18%
6 mph
05:00
-1°
13%
6 mph
06:00
-1°
4%
5 mph
07:00
-1°
14%
7 mph
08:00
-1°
14%
6 mph
09:00
13%
6 mph
10:00
12%
6 mph

Today · Mon 8/17

High 26°
80% / 0.18 in

Mostly cloudy. Winds SW at 6 mph.

Tonight · Mon 8/17

Low -1°
13% / –

Sunny. Winds SW at 4 mph.

Tomorrow · Tue 8/18

| -1°
14% / –

Mostly cloudy. Winds W at 7 mph.

7-day trend

Waltham · temperature + precipitation

10-day forecast

Updated 11:57 AM

Details & indices

Wind
3 mph NW
Gusts 14 mph
Humidity
84%
Dew point 18°
Pressure
30.33 inHg
Rising
UV index
2 — Low
High today
Air Quality
Good
AQI 34 · US EPA
Allergy
Moderate
Mugwort
Visibility
6 mi
Clear view
Allergy — Waltham

🌿 Conditions right now

View all →
Birch
None
Grass
Moderate
Oak
None
Alder
None
Hazel
None
Mugwort
Moderate
Ragweed
Low

Sun & moon

Sunrise5:54 AM
Sunset7:43 PM
Length of day13h 49m
Moonrise11:28 AM
Moonset9:48 PM
Next full moonAug 28 Sturgeon Moon
Latitude42.3765°N
Longitude-71.2356°E

Water temps nearby

View all →
Revere Beach (13 mi)68°
Hampton Beach (42 mi)65°
Race Point, Cape Cod (56 mi)70°
🌤️No rain expected in the next 90 minutes
Now+30+60+90 min
Minute-by-minute precip · HRRR nowcast

Daily planner

computed from today's forecast
Laundry day
Poor
Line-drying weather
Grilling
Fair
Fire up the grill
Running
Poor
Lace up outside
Patio
Fair
Dinner outdoors
Nearby places in {{REGION}}
Boston
Drizzle
20°
🌤️
Worcester
🌤️
Springfield
Data sources · Monday, August 17
Where the Waltham forecast comes from
This page blends NOAA/NWS model guidance with global ensembles for the 10-day outlook, air quality and alerts. Data refreshes every hour, current conditions every 15 minutes. Coordinates: 42.3765°N, -71.2356°.
NBM + global weather models
Updated: 11:57 AM
ZIP codes in Waltham
📮
02451
Waltham
📮
02452
Waltham
📮
02453
Waltham
📮
02454
Auburndale
Weather in Waltham
Waltham's outlook: warmest day near 26° (Monday), coldest night about -2° (Sunday). Models drop roughly 0.42 in of precipitation across the stretch — watch Thursday (87%). The NWS alert board for this area is currently clear. Right now Waltham is running about 45° warmer than New York. Longer view: classic Northeast mix — nor'easters, humid spells and a glorious fall.
Waltham, MA · Elev 66 ft · 42.38°N, 71.24°W · Massachusetts · Forecast computed for these exact coordinates
Powered by NWS/NOAA guidance, multi-model forecasts and official environmental feeds · NOAA/NWS · EPA AirNow · MET Norway · global models
Updated: 11:57 AM