Weather Waltham today

sunrise 6:14 am
sunset 7:11 pm

HOURLY

Weather forecast Waltham Sept. 5, 2025

During the day morning clear, later morning rain showers, in the afternoon initially rain showers, later overcast. The highest temperature 77 °F. Total rainfall 0.07 in. At night overcast. The lowest temperature 72 °F. Total rainfall 0.00 in.

Interactive map weather Massachusetts, USA

GPS: 42.3765; -71.2356

altitude: 72 ft
local time:

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Weather forecast Waltham, Massachusetts, USA extended forecast

Time			Precip.	Wind	Pressure	Humidity	Dew	total	Fog	Low	Middle	High
Today, Friday 09/05/2025
2 AM	clear	63 °F 66 °F	0.0 in	8 fps 5 mph south	30.1 in	95 %	61 °F	3 %	0%	2%	0%	0%
8 AM	rain showers	68 °F 72 °F	0.05 in	10 fps 7 mph south-southeast	30.1 in	87 %	63 °F	61 %	0%	18%	30%	35%
2 PM	overcast	73 °F 77 °F	0.02 in	16 fps 11 mph south	30.0 in	77 %	64 °F	100 %	0%	99%	48%	99%
8 PM	overcast	72 °F 77 °F	0.01 in	13 fps 9 mph south	30.0 in	89 %	68 °F	99 %	0%	99%	14%	7%
Tomorrow, Saturday 09/06/2025
2 AM	overcast	72 °F 79 °F	0.00 in	8 fps 6 mph south	29.9 in	96 %	70 °F	100 %	0%	100%	0%	0%
8 AM	rain	73 °F 81 °F	0.04 in	10 fps 7 mph south-southwest	29.9 in	92 %	70 °F	100 %	0%	100%	0%	0%
2 PM	heavy rain	84 °F 90 °F	0.28 in	17 fps 12 mph southwest	29.8 in	59 %	68 °F	99 %	0%	34%	44%	98%
8 PM	cloudy	72 °F 77 °F	0.00 in	13 fps 9 mph southwest	29.9 in	92 %	68 °F	63 %	0%	12%	32%	42%

Waltham, Massachusetts, USA - information

State: Massachusetts, USA

GPS coordinates: 42.3765; -71.2356

Time zone: America / New York time difference in hours with time in NY is -6 hours

Population: 63 378
Altitude: 72 ft
The administrative part:

Massachusetts, Boston
Middlesex County, Lowell

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Weather Waltham, Massachusetts, USA. Weather forecast Waltham.

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Data source

Weather forecast for Waltham is supplied by MET Norway Norwegian Meteorological Institute and the NRK.

Feels like

To calculate the perceived temperature, we use the Australian Apparent Temperature (AAT) model, which is designed for year-round calculations and takes air humidity into account in addition to temperature and wind speed.

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Astronomical information Waltham

data are always in the local time

Sun and light

Sept. 5, 2025

Sunrise:	Sunset:
6:14 am	7:11 pm
Noon:	Length of day:
12:43 pm	12:57
Start of civil twilight*:	End of civil twilight*:
5:45 am	7:40 pm
Start of nautical twilight*:	End of nautical twilight*:
5:11 am	8:14 pm
Start of astronomical twilight*:	End of astronomical twilight*:
4:36 am	8:49 pm
* What is Twilight?

Moon and moon phases

Moonrise:	Moonset:
09/04/2025 5:53 pm	09/05/2025 3:26 am
Next new moon:	Next full moon:
09/21/2025	09/07/2025