Water Temperature of Cambridge Reservoir Tributary 3 in Waltham, MA

Current Water Temperature

58.8°F 14.9°C
Cold Thermal Gear Required
58.8°F
Frigid < 50°F
Cold 50°–60°
Cool 60°–70°
Comfortable 70°–80°
Warm 80°+

Cold shock risk with rapid dexterity loss (10–15 mins). Wetsuit or drysuit strongly advised for any immersion.

Measurement Time: Thursday, November 5, 2026, 11:40 AM EST

Temperature Locations

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Local Points of Interest

Hobbs Brook Basin

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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

67.7°F
Partly Cloudy
Conditions: Partly Cloudy
Humidity: 75%
Feels Like: 64.6°F
Wind: SSW 11.2 mph
Wind Gusts: 29.3 mph
Pressure: 29.86 in
Precipitation: 0 in
Cloud Cover: 31%
Visibility: 6 mi
UV Index: 0

Weather Forecast

Overcast
Thu
H: 74°F
L: 57°F
Light rain
Fri
H: 65°F
L: 61°F
Patchy rain nearby
Sat
H: 61°F
L: 46°F

Air Quality

EPA Index 1 • Good

Air quality is satisfactory, and air pollution poses little or no risk.

PM2.5
8.8 μg/m³
Good
PM10
12.7 μg/m³
Good
Ozone (O3)
69 μg/m³
Photochemical
NO2
11.3 μg/m³
Nitrogen Dioxide
SO2
0.7 μg/m³
Sulfur Dioxide
CO
138 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 10m daylight
Sunrise 6:24 AM
Solar Noon 11:28 AM
Sunset 4:33 PM
Moon
Waning Crescent • 11%
Moonrise 2:32 AM
Transit 8:39 AM
Moonset 2:36 PM

Best Times for Fishing or Hunting

Major Periods

8:09 AM - 10:39 AM
8:31 PM - 11:01 PM

Minor Periods

2:02 AM - 3:32 AM
2:06 PM - 3:36 PM
Action Rating:
Fair Action 2/5

Small Craft Advisory issued November 5 at 1:40PM EST until November 5 at 7:00PM EST by NWS Boston/Norton MA

Effective: Thu November 5, 2026, 1:40 PM
Expires: Thu November 5, 2026, 7:00 PM

* WHAT...South winds around 15 kt with gusts up to 25 kt and waves around 2 feet. * WHERE...Boston Harbor. * WHEN...Until 7 PM EST this evening. * IMPACTS...Conditions will be hazardous to small craft.
Thursday, November 5, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 65.1°F
Average Humidity: 81%
Chance of Rain: 37%
Wind: 13.2 mph
UV Index: 2.2

Astronomical

Sun
10h 10m daylight
Sunrise 6:24 AM
Solar Noon 11:28 AM
Sunset 4:33 PM
Moon
Waning Crescent • 11%
Moonrise 2:32 AM
Transit 8:39 AM
Moonset 2:36 PM

Best Times for Fishing or Hunting

Major Periods

8:09 AM - 10:39 AM
8:31 PM - 11:01 PM

Minor Periods

2:02 AM - 3:32 AM
2:06 PM - 3:36 PM
Action Rating:
Fair Action 2/5
Friday, November 6, 2026

Weather Forecast

Conditions: Light rain
Average Temperature: 63.7°F
Average Humidity: 97%
Chance of Rain: 94%
Wind: 8.9 mph
UV Index: 0.5

Astronomical

Sun
10h 7m daylight
Sunrise 6:25 AM
Solar Noon 11:28 AM
Sunset 4:32 PM
Moon
Waning Crescent • 5%
Moonrise 3:39 AM
Transit 9:23 AM
Moonset 2:56 PM

Best Times for Fishing or Hunting

Major Periods

8:53 AM - 11:23 AM
9:15 PM - 11:45 PM

Minor Periods

3:09 AM - 4:39 AM
2:26 PM - 3:56 PM
Action Rating:
Fair Action 2/5
Saturday, November 7, 2026

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 53.3°F
Average Humidity: 90%
Chance of Rain: 85%
Wind: 9.6 mph
UV Index: 0.7

Astronomical

Sun
10h 5m daylight
Sunrise 6:26 AM
Solar Noon 11:28 AM
Sunset 4:31 PM
Moon
Waning Crescent • 1%
Moonrise 4:47 AM
Transit 10:07 AM
Moonset 3:19 PM

Best Times for Fishing or Hunting

Major Periods

9:37 AM - 12:07 PM
10:00 PM - 12:30 AM

Minor Periods

4:17 AM - 5:47 AM
2:49 PM - 4:19 PM
Action Rating:
Good Action 3/5
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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