Water Temperature of the St. Croix River in Calais, ME

Current Water Temperature

56.7°F

Measurement Time: Monday, October 12, 2026, 2:45 PM EDT

Temperature Locations

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Local Points of Interest

St. Stephen, NB

St. Croix River

Station Name: St. Croix River at Milltown, Maine
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 62 feet

Nearest Address:
531 North St
Calais, ME 04619
Washington County

GPS Coordinates: 45.17, -67.2966667

Nearby Water Temperatures

Lewy Lake, Princeton, ME (14.2 mi)
Grand Lake Stream, Grand Lake Stream, ME (23.5 mi)
Gulf of Maine, Eastport, ME (23.9 mi)
Narraguagus River, Cherryfield, ME (49.8 mi)
Penobscot River, Eddington, ME (72.4 mi)
Meduxnekeag River, Houlton, ME (74 mi)
Piscataquis River, Guilford, ME (98.3 mi)
Ducktrap River, Lincolnville, ME (104.2 mi)
Sheepscot River, Whitefield, ME (130.4 mi)
Gulf of Maine, Monhegan, ME (142.9 mi)
Allagash River, Allagash, ME (156.6 mi)
St. John River, Saint Francis, ME (157.1 mi)
Gulf of Maine, Portland, ME (179.1 mi)
Gulf of Maine, Cape Elizabeth, ME (180.7 mi)
Wild River, Gilead, ME (188.5 mi)

Weather for Calais, Maine

Current Weather

41.7°F

Conditions: Patchy rain nearby
Humidity: 91%
Feels Like: 34.5°F
Wind: NNE 13 mph
Wind Gusts: 30.4 mph

Pressure: 29.84 in
Precipitation: 0 in
Cloud Cover: 100%
Visibility: 6 mi
UV Index: 0

Weather Forecast

Mon
H: 68°F
L: 40°F

Tue
H: 49°F
L: 33°F

Wed
H: 53°F
L: 43°F

Thu
H: 52°F
L: 38°F

Fri
H: 58°F
L: 35°F

Air Quality

AQI: 1 - Good

PM2.5: 3.8 μg/m3

PM10: 3.8 μg/m3

Carbon Monoxide: 122 μg/m3
Nitrogen Dioxide: 1.4 μg/m3
Sulphur Dioxide: 0.8 μg/m3
Ozone: 72 μg/m3

Astronomical

Sunrise: 6:42 AM
Sun Transit: 12:15 AM
Sunset: 5:49 PM
Daylight: 11 hrs 8 mins

Moonrise: 9:00 AM
Moon Transit: 1:43 PM
Moonset: 6:18 PM
Moon Phase: New
Moon Illumination: 0.8%

Best Times for Fishing or Hunting

Major Periods

3:57 AM - 6:27 AM
1:13 PM - 3:43 PM

Minor Periods

5:48 PM - 7:18 PM
8:30 AM - 10:00 AM

Action Rating: 5 out of 5

Monday, October 12, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 51.6°F
Average Humidity: 85%

Chance of Rain: 78%
Wind: 14.3 mph
UV Index: 2.8

Air Quality

AQI: 1 - Good

PM2.5: 3.57 μg/m3

PM10: 4.4 μg/m3

Carbon Monoxide: 114.04 μg/m3
Nitrogen Dioxide: 1.18 μg/m3
Sulphur Dioxide: 0.9 μg/m3
Ozone: 77.33 μg/m3

Astronomical

Sunrise: 6:42 AM
Sun Transit: 12:15 AM
Sunset: 5:49 PM
Daylight: 11 hrs 8 mins

Moonrise: 9:00 AM
Moon Transit: 1:43 PM
Moonset: 6:18 PM
Moon Phase: New
Moon Illumination: 0.8%

Best Times for Fishing or Hunting

Major Periods

3:57 AM - 6:27 AM
1:13 PM - 3:43 PM

Minor Periods

5:48 PM - 7:18 PM
8:30 AM - 10:00 AM

Action Rating: 5 out of 5

Tuesday, October 13, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 40.4°F
Average Humidity: 79%

Chance of Rain: 84%
Wind: 10.1 mph
UV Index: 3.2

Air Quality

AQI: 1 - Good

PM2.5: 2.19 μg/m3

PM10: 3.29 μg/m3

Carbon Monoxide: 110.13 μg/m3
Nitrogen Dioxide: 1.75 μg/m3
Sulphur Dioxide: 0.98 μg/m3
Ozone: 71.92 μg/m3

Astronomical

Sunrise: 6:43 AM
Sun Transit: 12:15 AM
Sunset: 5:47 PM
Daylight: 11 hrs 5 mins

Moonrise: 10:10 AM
Moon Transit: 2:32 PM
Moonset: 6:49 PM
Moon Phase: New
Moon Illumination: 4.0%

Best Times for Fishing or Hunting

Major Periods

4:45 AM - 7:15 AM
2:02 PM - 4:32 PM

Minor Periods

6:19 PM - 7:49 PM
9:40 AM - 11:10 AM

Action Rating: 3 out of 5

Wednesday, October 14, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 48.7°F
Average Humidity: 96%

Chance of Rain: 94%
Wind: 13.2 mph
UV Index: 0.9

Air Quality

AQI: 1 - Good

PM2.5: 0.49 μg/m3

PM10: 0.6 μg/m3

Carbon Monoxide: 111.13 μg/m3
Nitrogen Dioxide: 1.62 μg/m3
Sulphur Dioxide: 0.56 μg/m3
Ozone: 76.25 μg/m3

Astronomical

Sunrise: 6:44 AM
Sun Transit: 12:15 AM
Sunset: 5:46 PM
Daylight: 11 hrs 1 mins

Moonrise: 11:15 AM
Moon Transit: 3:22 PM
Moonset: 7:26 PM
Moon Phase: Waxing Crescent
Moon Illumination: 9.6%

Best Times for Fishing or Hunting

Major Periods

5:35 AM - 8:05 AM
2:52 PM - 5:22 PM

Minor Periods

6:56 PM - 8:26 PM
10:45 AM - 12:15 AM

Action Rating: 3 out of 5

Thursday, October 15, 2026

Weather Forecast

Conditions: Sunny
Average Temperature: 45.8°F
Average Humidity: 71%

Chance of Rain: 20%
Wind: 15.7 mph
UV Index: 3.2

Air Quality

AQI: 1 - Good

PM2.5: 0.42 μg/m3

PM10: 0.52 μg/m3

Carbon Monoxide: 120.71 μg/m3
Nitrogen Dioxide: 1.22 μg/m3
Sulphur Dioxide: 0.64 μg/m3
Ozone: 63.42 μg/m3

Astronomical

Sunrise: 6:45 AM
Sun Transit: 12:14 AM
Sunset: 5:44 PM
Daylight: 10 hrs 58 mins

Moonrise: 12:15 AM
Moon Transit: 4:14 PM
Moonset: 8:13 PM
Moon Phase: Waxing Crescent
Moon Illumination: 17.2%

Best Times for Fishing or Hunting

Major Periods

6:26 AM - 8:56 AM
3:44 PM - 6:14 PM

Minor Periods

7:43 PM - 9:13 PM
11:45 AM - 1:15 PM

Action Rating: 3 out of 5

Friday, October 16, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 42.7°F
Average Humidity: 89%

Chance of Rain: 91%
Wind: 15.9 mph
UV Index: 0.4

Air Quality

AQI: 1 - Good

PM2.5: 0.58 μg/m3

PM10: 0.69 μg/m3

Carbon Monoxide: 163.44 μg/m3
Nitrogen Dioxide: 1.7 μg/m3
Sulphur Dioxide: 0.66 μg/m3
Ozone: 50.78 μg/m3

Astronomical

Sunrise: 6:47 AM
Sun Transit: 12:14 AM
Sunset: 5:42 PM
Daylight: 10 hrs 55 mins

Moonrise: 1:06 PM
Moon Transit: 5:05 PM
Moonset: 9:08 PM
Moon Phase: Waxing Crescent
Moon Illumination: 26.6%

Best Times for Fishing or Hunting

Major Periods

7:18 AM - 9:48 AM
4:35 PM - 7:05 PM

Minor Periods

8:38 PM - 10:08 PM
12:36 AM - 2:06 PM

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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