Water Temperature of Stony Brook in Waltham, MA

Current Water Temperature

53.4°F 11.9°C
Cold Thermal Gear Required
53.4°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: Sunday, November 8, 2026, 1:20 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

47.7°F
Overcast
Conditions: Overcast
Humidity: 84%
Feels Like: 42.3°F
Wind: WNW 12.8 mph
Wind Gusts: 30.9 mph
Pressure: 29.63 in
Precipitation: 0 in
Cloud Cover: 100%
Visibility: 6 mi
UV Index: 0

Weather Forecast

Patchy rain nearby
Sun
H: 56°F
L: 44°F
Patchy rain nearby
Mon
H: 53°F
L: 44°F
Sunny
Tue
H: 56°F
L: 42°F

Air Quality

EPA Index 1 • Good

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

PM2.5
1.1 μg/m³
Good
PM10
1.1 μg/m³
Good
Ozone (O3)
49 μg/m³
Photochemical
NO2
10.2 μg/m³
Nitrogen Dioxide
SO2
1.3 μg/m³
Sulfur Dioxide
CO
150 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 3m daylight
Sunrise 6:28 AM
Solar Noon 11:28 AM
Sunset 4:30 PM
Moon
New • 0%
Moonrise 5:54 AM
Transit 10:53 AM
Moonset 3:45 PM

Best Times for Fishing or Hunting

Major Periods

10:23 AM - 12:53 PM
10:47 PM - 1:17 AM

Minor Periods

5:24 AM - 6:54 AM
3:15 PM - 4:45 PM
Action Rating:
Peak Action 5/5
Sunday, November 8, 2026

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 49.7°F
Average Humidity: 76%
Chance of Rain: 65%
Wind: 13 mph
UV Index: 1.6

Astronomical

Sun
10h 3m daylight
Sunrise 6:28 AM
Solar Noon 11:28 AM
Sunset 4:30 PM
Moon
New • 0%
Moonrise 5:54 AM
Transit 10:53 AM
Moonset 3:45 PM

Best Times for Fishing or Hunting

Major Periods

10:23 AM - 12:53 PM
10:47 PM - 1:17 AM

Minor Periods

5:24 AM - 6:54 AM
3:15 PM - 4:45 PM
Action Rating:
Peak Action 5/5
Monday, November 9, 2026

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 48.2°F
Average Humidity: 70%
Chance of Rain: 39%
Wind: 10.7 mph
UV Index: 1.3

Astronomical

Sun
10h 0m daylight
Sunrise 6:29 AM
Solar Noon 11:28 AM
Sunset 4:29 PM
Moon
New • 2%
Moonrise 7:02 AM
Transit 11:41 AM
Moonset 4:16 PM

Best Times for Fishing or Hunting

Major Periods

11:11 AM - 1:41 PM
11:36 PM - 2:06 AM

Minor Periods

6:32 AM - 8:02 AM
3:46 PM - 5:16 PM
Action Rating:
Very Good 4/5
Tuesday, November 10, 2026

Weather Forecast

Conditions: Sunny
Average Temperature: 47.1°F
Average Humidity: 68%
Chance of Rain: 10%
Wind: 10.3 mph
UV Index: 1.8

Astronomical

Sun
9h 58m daylight
Sunrise 6:30 AM
Solar Noon 11:29 AM
Sunset 4:28 PM
Moon
New • 0%
Moonrise 8:07 AM
Transit 12:31 PM
Moonset 4:53 PM

Best Times for Fishing or Hunting

Major Periods

12:01 PM - 2:31 PM
11:36 PM - 2:06 AM

Minor Periods

7:37 AM - 9:07 AM
4:23 PM - 5:53 PM
Action Rating:
Very Good 4/5
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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