Water Temperature of Stony Brook in Waltham, MA

Current Water Temperature

37.2°F

Measurement Time: Sunday, December 28, 2025, 5:10 AM EST

Temperature Locations

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Local Points of Interest

Cambridge Reservoir (Hobbs Brook Basin)

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Stony Brook

Station Name: HOBBS BK BELOW CAMBRIDGE RES NR KENDALL GREEN, MA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 167 feet

Nearest Address:
Winter St
Waltham, MA 02451
Middlesex County

GPS Coordinates: 42.3981512, -71.2733903

Nearby Water Temperatures

Stony Brook, Weston, MA (1.2 mi)
Cambridge Reservoir, Lincoln, MA (1.6 mi)
Cambridge Reservoir Tributary 3, Waltham, MA (1.7 mi)
Stony Brook Tributary, Waltham, MA (1.8 mi)
Stony Brook Tributary, Weston, MA (1.9 mi)
Stony Brook, Weston, MA (2 mi)
Hobbs Brook, Lincoln, MA (2.7 mi)
Cambridge Reservoir Tributary 1, Lexington, MA (2.7 mi)
Cambridge Reservoir Tributary 2, Lexington, MA (2.7 mi)
Stony Brook Reservoir Tributary, Weston, MA (3 mi)
Shawsheen River, Bedford, MA (4.8 mi)
Fresh Pond, Cambridge, MA (6.6 mi)
Nashua River, Clinton, MA (20.1 mi)
Gates Brook, West Boylston, MA (25.7 mi)
Stillwater River, Sterling, MA (26.4 mi)

Weather for Waltham, Massachusetts

Current Weather

23.3°F
Mostly cloudy
Conditions: Mostly cloudy
Humidity: 61%
Heat Index: 23.3°F
Feels Like: 20.7°F
Wind: W 1.2 mph
Wind Gusts: 5 mph
Wind Chill: 20.7°F
Air Pressure: 1020.19 millibars
Dew Point: 20.7°F
Chance of Precipitation: 7%
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 10 mi
UV Index: 1

Five Day Weather Forecast

Sunny
Sun
H: 38°F
L: 13°F
Moderate rain
Mon
H: 46°F
L: 32°F
Cloudy
Tue
H: 29°F
L: 24°F
Overcast
Wed
H: 34°F
L: 25°F
Heavy snow
Thu
H: 29°F
L: 26°F

Air Quality

AQI: 1 - Good
PM2.5: 11.95 μg/m3
PM10: 13.35 μg/m3
Carbon Monoxide: 314.85 μg/m3
Nitrogen Dioxide: 28.35 μg/m3
Sulphur Dioxide: 5.75 μg/m3
Ozone: 66 μg/m3

Astronomical

Sunrise: 7:14 AM
Sun Transit: 11:46 AM
Sunset: 4:20 PM
Daylight: 9 hrs 7 mins
Moonrise: 11:42 AM
Moon Transit: 6:33 PM
Moonset: 12:24 AM
Moon Phase: First Quarter
Moon Illumination: 63.0%

Best Times for Fishing or Hunting

Major Periods

8:13 AM - 10:43 AM
6:03 PM - 8:33 PM

Minor Periods

11:12 AM - 12:42 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Winter Weather Advisory issued December 28 at 1:06AM EST until December 29 at 6:00AM EST by NWS Boston/Norton MA

Effective: Sun December 28, 2025, 1:06 AM
Expires: Sun December 28, 2025, 2:15 PM

* WHAT...Freezing rain expected. Total ice accumulations around one tenth of an inch. * WHERE...In Massachusetts, Eastern Norfolk MA, Suffolk MA, and Eastern Essex MA Counties. In Rhode Island, Western Kent RI County. * WHEN...From 7 PM this evening to 6 AM EST Monday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Difficult travel conditions are possible. The hazardous conditions could impact the Monday morning commute.

Slow down and use caution while traveling. Prepare for possible power outages. Be prepared for slippery roads. Slow down and use caution while driving. If you are going outside, watch your first few steps taken on stairs, sidewalks, and driveways. These surfaces could be icy and slippery, increasing your risk of a fall and injury.


Winter Weather Advisory issued December 28 at 1:06AM EST until December 29 at 6:00AM EST by NWS Boston/Norton MA

Effective: Sun December 28, 2025, 1:06 AM
Expires: Sun December 28, 2025, 2:15 PM

* WHAT...Freezing rain expected. Total ice accumulations up to two tenths of an inch. * WHERE...Portions of northern Connecticut, central, eastern, northeastern, and western Massachusetts, and northern Rhode Island. * WHEN...From 7 PM this evening to 6 AM EST Monday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Difficult travel conditions are possible. The hazardous conditions could impact the Monday morning commute.

Slow down and use caution while traveling. Prepare for possible power outages. Be prepared for slippery roads. Slow down and use caution while driving. If you are going outside, watch your first few steps taken on stairs, sidewalks, and driveways. These surfaces could be icy and slippery, increasing your risk of a fall and injury.


Winter Weather Advisory issued December 27 at 11:20PM EST until December 29 at 7:00PM EST by NWS Gray ME

Effective: Sat December 27, 2025, 11:20 PM
Expires: Sun December 28, 2025, 11:30 AM

...WINTRY MIX LIKELY SUNDAY NIGHT AND MONDAY... .A messy winter storm is set to arrive across northern New England Sunday night into Monday. While all winter weather types are possible, it looks like this storm will feature enough freezing rain to make travel hazardous through Monday afternoon. * WHAT...Mixed precipitation expected. Total snow accumulations up to one inch, sleet accumulations up to one tenth of an inch, and ice accumulations around one quarter of an inch. * WHERE...Portions of south central and southwest Maine and southern New Hampshire. * WHEN...From 10 PM Sunday to 7 PM EST Monday. * IMPACTS...Difficult travel conditions are possible due to icy road conditions. This is especially true on untreated side roads. The hazardous conditions could impact the Monday morning and evening commutes.

Slow down and use caution while traveling. The latest road conditions can be obtained by going to newengland511.org


Winter Weather Advisory issued December 28 at 5:46AM EST until December 29 at 7:00PM EST by NWS Gray ME

Effective: Sun December 28, 2025, 5:46 AM
Expires: Sun December 28, 2025, 6:00 PM

...WINTRY MIX LIKELY TONIGHT AND MONDAY... .A messy winter storm is set to arrive across northern New England tonight into Monday. While all winter weather types are possible, it looks like this storm will feature enough freezing rain to make travel hazardous through Monday afternoon. * WHAT...Mixed precipitation expected. Total snow accumulations up to one inch and ice accumulations around one quarter of an inch. * WHERE...Portions of south central and southwest Maine and southern New Hampshire. * WHEN...From 10 PM this evening to 7 PM EST Monday. * IMPACTS...Difficult travel conditions are possible due to icy road conditions. This is especially true on untreated side roads. The hazardous conditions could impact the Monday morning and evening commutes.

Slow down and use caution while traveling. The latest road conditions can be obtained by going to newengland511.org
Sunday, December 28, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 25.2°F
Average Humidity: 64%
Chance of Rain: 0%
Wind: 7.2 mph
UV Index: 0.2

Air Quality

AQI: 1 - Good
PM2.5: 14.95 μg/m3
PM10: 16.07 μg/m3
Carbon Monoxide: 331.05 μg/m3
Nitrogen Dioxide: 37.77 μg/m3
Sulphur Dioxide: 4.04 μg/m3
Ozone: 46.48 μg/m3

Astronomical

Sunrise: 7:14 AM
Sun Transit: 11:46 AM
Sunset: 4:20 PM
Daylight: 9 hrs 7 mins
Moonrise: 11:42 AM
Moon Transit: 6:33 PM
Moonset: 12:24 AM
Moon Phase: First Quarter
Moon Illumination: 63.0%

Best Times for Fishing or Hunting

Major Periods

8:13 AM - 10:43 AM
6:03 PM - 8:33 PM

Minor Periods

11:12 AM - 12:42 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Monday, December 29, 2025

Weather Forecast

Conditions: Moderate rain
Average Temperature: 39.4°F
Average Humidity: 94%
Chance of Rain: 88%
Wind: 13.4 mph
UV Index: 0

Air Quality

AQI: 1 - Good
PM2.5: 11.68 μg/m3
PM10: 12.93 μg/m3
Carbon Monoxide: 248.13 μg/m3
Nitrogen Dioxide: 30.55 μg/m3
Sulphur Dioxide: 4.55 μg/m3
Ozone: 37.28 μg/m3

Astronomical

Sunrise: 7:14 AM
Sun Transit: 11:47 AM
Sunset: 4:21 PM
Daylight: 9 hrs 7 mins
Moonrise: 12:08 AM
Moon Transit: 7:24 PM
Moonset: 1:38 AM
Moon Phase: First Quarter
Moon Illumination: 73.5%

Best Times for Fishing or Hunting

Major Periods

9:03 AM - 11:33 AM
6:54 PM - 9:24 PM

Minor Periods

11:38 AM - 1:08 PM
1:08 AM - 2:38 AM

Action Rating: 2 out of 5

Tuesday, December 30, 2025

Weather Forecast

Conditions: Cloudy
Average Temperature: 27.3°F
Average Humidity: 60%
Chance of Rain: 0%
Wind: 17.9 mph
UV Index: 0.2

Air Quality

AQI: 1 - Good
PM2.5: 3.21 μg/m3
PM10: 3.26 μg/m3
Carbon Monoxide: 172.85 μg/m3
Nitrogen Dioxide: 9.49 μg/m3
Sulphur Dioxide: 2.95 μg/m3
Ozone: 65.24 μg/m3

Astronomical

Sunrise: 7:14 AM
Sun Transit: 11:47 AM
Sunset: 4:22 PM
Daylight: 9 hrs 8 mins
Moonrise: 12:40 AM
Moon Transit: 8:21 PM
Moonset: 2:57 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 82.8%

Best Times for Fishing or Hunting

Major Periods

9:58 AM - 12:28 AM
7:51 PM - 10:21 PM

Minor Periods

12:10 AM - 1:40 PM
2:27 AM - 3:57 AM

Action Rating: 2 out of 5

Wednesday, December 31, 2025

Weather Forecast

Conditions: Overcast
Average Temperature: 29.1°F
Average Humidity: 61%
Chance of Rain: 0%
Wind: 14.3 mph
UV Index: 0.2

Air Quality

AQI: 1 - Good
PM2.5: 3.57 μg/m3
PM10: 3.68 μg/m3
Carbon Monoxide: 178.3 μg/m3
Nitrogen Dioxide: 11.22 μg/m3
Sulphur Dioxide: 3.06 μg/m3
Ozone: 66.96 μg/m3

Astronomical

Sunrise: 7:14 AM
Sun Transit: 11:48 AM
Sunset: 4:23 PM
Daylight: 9 hrs 8 mins
Moonrise: 1:20 PM
Moon Transit: 9:24 PM
Moonset: 4:18 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 90.5%

Best Times for Fishing or Hunting

Major Periods

10:58 AM - 1:28 PM
8:54 PM - 11:24 PM

Minor Periods

12:50 AM - 2:20 PM
3:48 AM - 5:18 AM

Action Rating: 2 out of 5

Thursday, January 1, 2026

Weather Forecast

Conditions: Heavy snow
Average Temperature: 28.5°F
Average Humidity: 75%
Chance of Rain: 88%
Wind: 11.6 mph
UV Index: 0

Air Quality

AQI: 1 - Good
PM2.5: 4.79 μg/m3
PM10: 5.12 μg/m3
Carbon Monoxide: 197.38 μg/m3
Nitrogen Dioxide: 15.49 μg/m3
Sulphur Dioxide: 3.96 μg/m3
Ozone: 59.69 μg/m3

Astronomical

Sunrise: 7:14 AM
Sun Transit: 11:48 AM
Sunset: 4:23 PM
Daylight: 9 hrs 9 mins
Moonrise: 2:14 PM
Moon Transit: 10:30 PM
Moonset: 5:38 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 96.0%

Best Times for Fishing or Hunting

Major Periods

12:03 AM - 2:33 PM
12:00 AM - 12:00 AM

Minor Periods

1:44 PM - 3:14 PM
5:08 AM - 6:38 AM

Action Rating: 2 out of 5

The times presented here are based upon the solunar theory, which is the idea that the movements of fish and other animals are affected by the location of the sun and moon. The major periods are believed to be the times of the greatest animal activity and occur when the moon is directly overhead or underfoot (lunar transits). The minor periods also see increased activity and occur when the moon is rising or setting. The strongest activity occurs during full or new moons, and the weakest during quarter or three quarter moons. This is indicated by the Action Rating.

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