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

Current Water Temperature

68.5°F

Measurement Time: Monday, September 7, 2026, 9:45 AM 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

73°F

Conditions: Sunny

Humidity: 46%

Wind: NW 12 mph

Dew Point: 51°F

Weather Forecast

Labor Day
75°F - Sunny

Tonight
50°F - Mostly Clear then Isolated Rain Showers

Tuesday
70°F - Slight Chance Rain Showers then Sunny

Tuesday Night
40°F - Mostly Clear

Wednesday
67°F - Partly Sunny

Wednesday Night
55°F - Rain Showers

Thursday
79°F - Rain Showers Likely

Thursday Night
50°F - Chance Rain Showers then Partly Cloudy

Friday
70°F - Mostly Sunny

Friday Night
46°F - Mostly Clear

Saturday
74°F - Sunny

Saturday Night
49°F - Partly Cloudy

Sunday
74°F - Mostly Sunny

Sunday Night
51°F - Chance Rain Showers

Astronomical

Sunrise: 5:58 AM
Sun Transit: 12:27 AM
Sunset: 6:55 PM
Daylight: 12 hrs 57 mins

Moonrise: 1:17 AM
Moon Transit: 9:25 AM
Moonset: 5:18 PM
Moon Phase: Waning Crescent
Moon Illumination: 10.1%

Best Times for Fishing or Hunting

Major Periods

8:55 AM - 11:25 AM
12:00 AM - 12:00 AM

Minor Periods

4:48 PM - 6:18 PM
12:47 AM - 2:17 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 5:58 AM
Sun Transit: 12:27 AM
Sunset: 6:55 PM
Daylight: 12 hrs 57 mins

Moonrise: 1:17 AM
Moon Transit: 9:25 AM
Moonset: 5:18 PM
Moon Phase: Waning Crescent
Moon Illumination: 10.1%

Best Times for Fishing or Hunting

Major Periods

8:55 AM - 11:25 AM
12:00 AM - 12:00 AM

Minor Periods

4:48 PM - 6:18 PM
12:47 AM - 2:17 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 5:58 AM
Sun Transit: 12:27 AM
Sunset: 6:55 PM
Daylight: 12 hrs 57 mins

Moonrise: 1:17 AM
Moon Transit: 9:25 AM
Moonset: 5:18 PM
Moon Phase: Waning Crescent
Moon Illumination: 10.1%

Best Times for Fishing or Hunting

Major Periods

8:55 AM - 11:25 AM
12:00 AM - 12:00 AM

Minor Periods

4:48 PM - 6:18 PM
12:47 AM - 2:17 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 5:59 AM
Sun Transit: 12:26 AM
Sunset: 6:53 PM
Daylight: 12 hrs 54 mins

Moonrise: 2:39 AM
Moon Transit: 10:21 AM
Moonset: 5:47 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.4%

Best Times for Fishing or Hunting

Major Periods

12:32 AM - 3:02 AM
9:51 AM - 12:21 AM

Minor Periods

5:17 PM - 6:47 PM
2:09 AM - 3:39 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 5:59 AM
Sun Transit: 12:26 AM
Sunset: 6:53 PM
Daylight: 12 hrs 54 mins

Moonrise: 2:39 AM
Moon Transit: 10:21 AM
Moonset: 5:47 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.4%

Best Times for Fishing or Hunting

Major Periods

12:32 AM - 3:02 AM
9:51 AM - 12:21 AM

Minor Periods

5:17 PM - 6:47 PM
2:09 AM - 3:39 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 6:01 AM
Sun Transit: 12:26 AM
Sunset: 6:52 PM
Daylight: 12 hrs 51 mins

Moonrise: 4:00 AM
Moon Transit: 11:13 AM
Moonset: 6:11 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.9%

Best Times for Fishing or Hunting

Major Periods

1:25 AM - 3:55 AM
10:43 AM - 1:13 PM

Minor Periods

5:41 PM - 7:11 PM
3:30 AM - 5:00 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 6:01 AM
Sun Transit: 12:26 AM
Sunset: 6:52 PM
Daylight: 12 hrs 51 mins

Moonrise: 4:00 AM
Moon Transit: 11:13 AM
Moonset: 6:11 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.9%

Best Times for Fishing or Hunting

Major Periods

1:25 AM - 3:55 AM
10:43 AM - 1:13 PM

Minor Periods

5:41 PM - 7:11 PM
3:30 AM - 5:00 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 6:02 AM
Sun Transit: 12:26 AM
Sunset: 6:50 PM
Daylight: 12 hrs 48 mins

Moonrise: 5:17 AM
Moon Transit: 12:01 AM
Moonset: 6:31 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

2:15 AM - 4:45 AM
11:31 AM - 2:01 PM

Minor Periods

6:01 PM - 7:31 PM
4:47 AM - 6:17 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 6:02 AM
Sun Transit: 12:26 AM
Sunset: 6:50 PM
Daylight: 12 hrs 48 mins

Moonrise: 5:17 AM
Moon Transit: 12:01 AM
Moonset: 6:31 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

2:15 AM - 4:45 AM
11:31 AM - 2:01 PM

Minor Periods

6:01 PM - 7:31 PM
4:47 AM - 6:17 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 6:03 AM
Sun Transit: 12:25 AM
Sunset: 6:48 PM
Daylight: 12 hrs 45 mins

Moonrise: 6:33 AM
Moon Transit: 12:48 AM
Moonset: 6:50 PM
Moon Phase: New
Moon Illumination: 1.7%

Best Times for Fishing or Hunting

Major Periods

3:02 AM - 5:32 AM
12:18 AM - 2:48 PM

Minor Periods

6:20 PM - 7:50 PM
6:03 AM - 7:33 AM

Action Rating: 5 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 6:03 AM
Sun Transit: 12:25 AM
Sunset: 6:48 PM
Daylight: 12 hrs 45 mins

Moonrise: 6:33 AM
Moon Transit: 12:48 AM
Moonset: 6:50 PM
Moon Phase: New
Moon Illumination: 1.7%

Best Times for Fishing or Hunting

Major Periods

3:02 AM - 5:32 AM
12:18 AM - 2:48 PM

Minor Periods

6:20 PM - 7:50 PM
6:03 AM - 7:33 AM

Action Rating: 5 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 6:04 AM
Sun Transit: 12:25 AM
Sunset: 6:46 PM
Daylight: 12 hrs 42 mins

Moonrise: 7:46 AM
Moon Transit: 1:33 PM
Moonset: 7:08 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

3:47 AM - 6:17 AM
1:03 PM - 3:33 PM

Minor Periods

6:38 PM - 8:08 PM
7:16 AM - 8:46 AM

Action Rating: 5 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 6:04 AM
Sun Transit: 12:25 AM
Sunset: 6:46 PM
Daylight: 12 hrs 42 mins

Moonrise: 7:46 AM
Moon Transit: 1:33 PM
Moonset: 7:08 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

3:47 AM - 6:17 AM
1:03 PM - 3:33 PM

Minor Periods

6:38 PM - 8:08 PM
7:16 AM - 8:46 AM

Action Rating: 5 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 6:06 AM
Sun Transit: 12:25 AM
Sunset: 6:44 PM
Daylight: 12 hrs 39 mins

Moonrise: 8:58 AM
Moon Transit: 2:18 PM
Moonset: 7:28 PM
Moon Phase: New
Moon Illumination: 2.2%

Best Times for Fishing or Hunting

Major Periods

4:32 AM - 7:02 AM
1:48 PM - 4:18 PM

Minor Periods

6:58 PM - 8:28 PM
8:28 AM - 9:58 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 6:06 AM
Sun Transit: 12:25 AM
Sunset: 6:44 PM
Daylight: 12 hrs 39 mins

Moonrise: 8:58 AM
Moon Transit: 2:18 PM
Moonset: 7:28 PM
Moon Phase: New
Moon Illumination: 2.2%

Best Times for Fishing or Hunting

Major Periods

4:32 AM - 7:02 AM
1:48 PM - 4:18 PM

Minor Periods

6:58 PM - 8:28 PM
8:28 AM - 9:58 AM

Action Rating: 4 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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