Water Temperature of Cambridge Reservoir Tributary 3 in Waltham, MA

Current Water Temperature

43.5°F

Measurement Time: Friday, February 6, 2026, 7:30 PM EST

Temperature Locations

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Local Points of Interest

Hobbs Brook Basin

Cambridge Reservoir Tributary 3

Station Name: CAMBRIDGE RES., UNNAMED TRIB 3, NR LEXINGTON, MA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 197 feet

Nearest Address:
170 Data Dr
Waltham, MA 02451
Middlesex County

GPS Coordinates: 42.4198177, -71.2575565

Nearby Water Temperatures

Cambridge Reservoir, Lincoln, MA (0.7 mi)
Cambridge Reservoir Tributary 2, Lexington, MA (1.1 mi)
Cambridge Reservoir Tributary 1, Lexington, MA (1.2 mi)
Hobbs Brook, Lincoln, MA (1.3 mi)
Stony Brook, Waltham, MA (1.7 mi)
Stony Brook, Weston, MA (2.9 mi)
Stony Brook Tributary, Waltham, MA (3.3 mi)
Shawsheen River, Bedford, MA (3.3 mi)
Stony Brook Tributary, Weston, MA (3.5 mi)
Stony Brook, Weston, MA (3.6 mi)
Stony Brook Reservoir Tributary, Weston, MA (4.5 mi)
Fresh Pond, Cambridge, MA (6.2 mi)
Nashua River, Clinton, MA (20.8 mi)
Gates Brook, West Boylston, MA (26.7 mi)
Stillwater River, Sterling, MA (27.2 mi)

Weather for Waltham, Massachusetts

Current Weather

21.9°F
Patchy light snow
Patchy light snow
19.3°F
14.7°F
88%
NNW 2.2 mph
3.1 mph
13.2°F
9.3°F
0 in
100%
3 mi
1001 mbar
0

Five Day Weather Forecast

Light snow
Sat
H: 30°F
L: 6°F
Sunny
Sun
H: 20°F
L: 1°F
Sunny
Mon
H: 31°F
L: 5°F
Light freezing rain
Tue
H: 30°F
L: 1°F
Patchy rain nearby
Wed
H: 36°F
L: 27°F

Air Quality

PM2.5: 10.35 μg/m3
PM10: 11.05 μg/m3
Carbon Monoxide: 281.85 μg/m3
Nitrogen Dioxide: 58.85 μg/m3
Sulphur Dioxide: 3.95 μg/m3
Ozone: 21 μg/m3

Astronomical

Sunrise: 6:52 AM
Sun Transit: 12:00 AM
Sunset: 5:07 PM
Daylight: 10 hrs 15 mins
Moonrise: 11:42 PM
Moon Transit: 4:01 AM
Moonset: 9:16 AM
Moon Phase: Waning Gibbous
Moon Illumination: 63.7%

Best Times for Fishing or Hunting

Major Periods

3:31 AM - 6:01 AM
6:27 PM - 8:57 PM

Minor Periods

12:00 AM - 12:00 AM
8:46 AM - 10:16 AM

Action Rating: 2 out of 5

Winter Weather Advisory issued February 6 at 12:41PM EST until February 7 at 7:00PM EST by NWS Boston/Norton MA

Effective: Fri February 6, 2026, 12:41 PM
Expires: Sat February 7, 2026, 1:45 AM

* WHAT...Snow expected. Total snow accumulations between 2 and 4 inches. * WHERE...Portions of central, eastern, and southeastern Massachusetts and northern and southern Rhode Island. * WHEN...from 4 AM to 7 PM EST Saturday. * IMPACTS...Plan on slippery road conditions.

Slow down and use caution while traveling.


Winter Storm Watch issued February 6 at 12:41PM EST until February 7 at 7:00PM EST by NWS Boston/Norton MA

Effective: Fri February 6, 2026, 12:41 PM
Expires: Sat February 7, 2026, 1:45 AM

* WHAT...Heavy snow possible. Total snow accumulations between 4 and 8 inches possible. * WHERE...Essex County. * WHEN...From late tonight through Saturday evening. * IMPACTS...Roads will become snow covered. Travel could be very difficult.

Monitor the latest forecasts for updates on this situation.


Winter Weather Advisory issued February 6 at 1:03PM EST until February 7 at 6:00PM EST by NWS Gray ME

Effective: Fri February 6, 2026, 1:03 PM
Expires: Sat February 7, 2026, 1:15 AM

...ACCUMULATING SNOWFALL TONIGHT THROUGH SATURDAY AFTERNOON... .Mainly light snow overspreads the area tonight. The potential exists for moderate to localized heavy snowfall late tonight through Saturday morning due to ocean enhancement along the coast. * WHAT...Snow expected. Total snow accumulations between 2 and 6 inches. * WHERE...Portions of southwest Maine and central and southern New Hampshire. * WHEN...From 1 AM to 6 PM EST Saturday. * IMPACTS...The potential exists for snowbands that will bring periods of locally heavy snowfall, which will lead to rapid snow accumulations and extremely dangerous travel conditions. Even light snowfall amounts can accumulate on roads and cause dangerous driving conditions due to snow covered roads. * ADDITIONAL DETAILS...This weather system will bring the potential for localized snowfall rates of 1 to 2 inches per hour late tonight into Saturday morning near the New Hampshire Seacoast and along coastal York County. Areas that experience these snowfall rates could see localized higher snowfall totals.

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


Cold Weather Advisory issued February 6 at 12:48PM EST until February 8 at 10:00AM EST by NWS Gray ME

Effective: Fri February 6, 2026, 12:48 PM
Expires: Sat February 7, 2026, 1:00 AM

* WHAT...Very cold wind chills as low as 20 below expected. * WHERE...In Maine, Central Interior Cumberland and Interior York Counties. In New Hampshire, Belknap, Strafford, Southern Carroll, Eastern Hillsborough, and Interior Rockingham Counties. * WHEN...From 6 PM Saturday to 10 AM EST Sunday. * IMPACTS...Frostbite and hypothermia will occur if unprotected skin is exposed to these temperatures. * ADDITIONAL DETAILS...Wind chills will again fall well below zero Sunday night.

Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves.


Extreme Cold Warning issued February 6 at 12:48PM EST until February 8 at 10:00AM EST by NWS Gray ME

Effective: Fri February 6, 2026, 12:48 PM
Expires: Sat February 7, 2026, 1:00 AM

* WHAT...Dangerously cold wind chills as low as 28 below expected. * WHERE...Western and Central Hillsborough and Merrimack Counties. * WHEN...From 6 PM Saturday to 10 AM EST Sunday. * IMPACTS...Frostbite and hypothermia will occur if unprotected skin is exposed to these temperatures. * ADDITIONAL DETAILS...Wind chills will again fall well below zero Sunday night.

Dress in layers including a hat, face mask, and gloves if you must go outside.


Saturday, February 7, 2026

Weather Forecast

Light snow
29.5°F
5.9°F
17.3°F
80%
0.29 in
82%
46%
13.2 mph
0.2


Air Quality

AQI: 2 - Moderate
PM2.5: 20.26 μg/m3
PM10: 21.19 μg/m3
Carbon Monoxide: 353.29 μg/m3
Nitrogen Dioxide: 46.24 μg/m3
Sulphur Dioxide: 5.35 μg/m3
Ozone: 35.2 μg/m3

Astronomical

Sunrise: 6:52 AM
Sun Transit: 12:00 AM
Sunset: 5:07 PM
Daylight: 10 hrs 15 mins
Moonrise: 11:42 PM
Moon Transit: 4:01 AM
Moonset: 9:16 AM
Moon Phase: Waning Gibbous
Moon Illumination: 63.7%

Best Times for Fishing or Hunting

Major Periods

3:31 AM - 6:01 AM
6:27 PM - 8:57 PM

Minor Periods

12:00 AM - 12:00 AM
8:46 AM - 10:16 AM

Action Rating: 2 out of 5

Sunday, February 8, 2026

Weather Forecast

Sunny
19.9°F
0.9°F
9.1°F
63%
0 in
0%
0%
11.2 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 4.64 μg/m3
PM10: 4.84 μg/m3
Carbon Monoxide: 180.01 μg/m3
Nitrogen Dioxide: 10.51 μg/m3
Sulphur Dioxide: 2.5 μg/m3
Ozone: 62.88 μg/m3

Astronomical

Sunrise: 6:51 AM
Sun Transit: 12:00 AM
Sunset: 5:08 PM
Daylight: 10 hrs 17 mins
Moonrise: 12:42 AM
Moon Transit: 4:44 AM
Moonset: 9:39 AM
Moon Phase: Last Quarter
Moon Illumination: 52.5%

Best Times for Fishing or Hunting

Major Periods

4:14 AM - 6:44 AM
7:11 PM - 9:41 PM

Minor Periods

9:09 AM - 10:39 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Monday, February 9, 2026

Weather Forecast

Sunny
30.6°F
5.4°F
16.3°F
62%
0 in
0%
0%
9.4 mph
0.5


Air Quality

AQI: 1 - Good
PM2.5: 4.71 μg/m3
PM10: 4.88 μg/m3
Carbon Monoxide: 186.27 μg/m3
Nitrogen Dioxide: 11.34 μg/m3
Sulphur Dioxide: 2.45 μg/m3
Ozone: 65.32 μg/m3

Astronomical

Sunrise: 6:50 AM
Sun Transit: 12:00 AM
Sunset: 5:09 PM
Daylight: 10 hrs 20 mins
Moonrise: 12:47 AM
Moon Transit: 5:29 AM
Moonset: 10:06 AM
Moon Phase: Last Quarter
Moon Illumination: 41.2%

Best Times for Fishing or Hunting

Major Periods

4:59 AM - 7:29 AM
7:58 PM - 10:28 PM

Minor Periods

9:36 AM - 11:06 AM
12:17 AM - 1:47 AM

Action Rating: 2 out of 5

Tuesday, February 10, 2026

Weather Forecast

Light freezing rain
30.2°F
1.3°F
19.2°F
84%
0.01 in
87%
2%
6.3 mph
0.5


Air Quality

AQI: 1 - Good
PM2.5: 5.6 μg/m3
PM10: 5.89 μg/m3
Carbon Monoxide: 199.97 μg/m3
Nitrogen Dioxide: 16.12 μg/m3
Sulphur Dioxide: 2.4 μg/m3
Ozone: 68 μg/m3

Astronomical

Sunrise: 6:48 AM
Sun Transit: 12:00 AM
Sunset: 5:11 PM
Daylight: 10 hrs 22 mins
Moonrise: 1:51 AM
Moon Transit: 6:17 AM
Moonset: 10:39 AM
Moon Phase: Last Quarter
Moon Illumination: 30.3%

Best Times for Fishing or Hunting

Major Periods

5:47 AM - 8:17 AM
8:47 PM - 11:17 PM

Minor Periods

10:09 AM - 11:39 AM
1:21 AM - 2:51 AM

Action Rating: 2 out of 5

Wednesday, February 11, 2026

Weather Forecast

Patchy rain nearby
36°F
26.5°F
31.8°F
94%
0.04 in
71%
22%
11.4 mph
0


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:47 AM
Sun Transit: 12:00 AM
Sunset: 5:12 PM
Daylight: 10 hrs 25 mins
Moonrise: 2:53 AM
Moon Transit: 7:07 AM
Moonset: 11:19 AM
Moon Phase: Last Quarter
Moon Illumination: 20.5%

Best Times for Fishing or Hunting

Major Periods

6:37 AM - 9:07 AM
12:00 AM - 12:00 AM

Minor Periods

10:49 AM - 12:19 AM
2:23 AM - 3:53 AM

Action Rating: 3 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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