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

Current Water Temperature

64.0°F

Measurement Time: Monday, September 21, 2026, 12:45 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

63°F
Mostly Sunny
Mostly Sunny
56%
N 6 mph
47°F

Weather Forecast

Mostly Sunny
This Afternoon
65°F - Mostly Sunny
Partly Cloudy
Tonight
40°F - Partly Cloudy
Mostly Sunny
Tuesday
63°F - Mostly Sunny
Patchy Fog
Tuesday Night
39°F - Patchy Fog
Patchy Fog then Sunny
Wednesday
63°F - Patchy Fog then Sunny
Patchy Fog
Wednesday Night
38°F - Patchy Fog
Patchy Fog then Sunny
Thursday
67°F - Patchy Fog then Sunny
Partly Cloudy
Thursday Night
42°F - Partly Cloudy
Slight Chance Rain Showers
Friday
65°F - Slight Chance Rain Showers
Chance Rain Showers
Friday Night
46°F - Chance Rain Showers
Chance Rain Showers
Saturday
64°F - Chance Rain Showers
Chance Rain Showers
Saturday Night
46°F - Chance Rain Showers
Chance Rain Showers
Sunday
65°F - Chance Rain Showers
Chance Rain Showers
Sunday Night
45°F - Chance Rain Showers

Astronomical

Sunrise: 6:15 AM
Sun Transit: 12:22 AM
Sunset: 6:29 PM
Daylight: 12 hrs 14 mins
Moonrise: 4:22 PM
Moon Transit: 8:52 PM
Moonset: 12:23 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 75.7%

Best Times for Fishing or Hunting

Major Periods

11:06 AM - 1:36 PM
8:22 PM - 10:52 PM

Minor Periods

3:52 PM - 5:22 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


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: 6:15 AM
Sun Transit: 12:22 AM
Sunset: 6:29 PM
Daylight: 12 hrs 14 mins
Moonrise: 4:22 PM
Moon Transit: 8:52 PM
Moonset: 12:23 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 75.7%

Best Times for Fishing or Hunting

Major Periods

11:06 AM - 1:36 PM
8:22 PM - 10:52 PM

Minor Periods

3:52 PM - 5:22 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


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: 6:15 AM
Sun Transit: 12:22 AM
Sunset: 6:29 PM
Daylight: 12 hrs 14 mins
Moonrise: 4:22 PM
Moon Transit: 8:52 PM
Moonset: 12:23 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 75.7%

Best Times for Fishing or Hunting

Major Periods

11:06 AM - 1:36 PM
8:22 PM - 10:52 PM

Minor Periods

3:52 PM - 5:22 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


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: 6:16 AM
Sun Transit: 12:21 AM
Sunset: 6:27 PM
Daylight: 12 hrs 10 mins
Moonrise: 4:47 PM
Moon Transit: 9:38 PM
Moonset: 1:31 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 84.7%

Best Times for Fishing or Hunting

Major Periods

11:53 AM - 2:23 PM
9:08 PM - 11:38 PM

Minor Periods

4:17 PM - 5:47 PM
1:01 AM - 2:31 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


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: 6:16 AM
Sun Transit: 12:21 AM
Sunset: 6:27 PM
Daylight: 12 hrs 10 mins
Moonrise: 4:47 PM
Moon Transit: 9:38 PM
Moonset: 1:31 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 84.7%

Best Times for Fishing or Hunting

Major Periods

11:53 AM - 2:23 PM
9:08 PM - 11:38 PM

Minor Periods

4:17 PM - 5:47 PM
1:01 AM - 2:31 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


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: 6:18 AM
Sun Transit: 12:21 AM
Sunset: 6:25 PM
Daylight: 12 hrs 7 mins
Moonrise: 5:08 PM
Moon Transit: 10:23 PM
Moonset: 2:40 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 91.9%

Best Times for Fishing or Hunting

Major Periods

12:38 AM - 3:08 PM
12:00 AM - 12:00 AM

Minor Periods

4:38 PM - 6:08 PM
2:10 AM - 3:40 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


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: 6:18 AM
Sun Transit: 12:21 AM
Sunset: 6:25 PM
Daylight: 12 hrs 7 mins
Moonrise: 5:08 PM
Moon Transit: 10:23 PM
Moonset: 2:40 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 91.9%

Best Times for Fishing or Hunting

Major Periods

12:38 AM - 3:08 PM
12:00 AM - 12:00 AM

Minor Periods

4:38 PM - 6:08 PM
2:10 AM - 3:40 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


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: 6:19 AM
Sun Transit: 12:21 AM
Sunset: 6:23 PM
Daylight: 12 hrs 4 mins
Moonrise: 5:27 PM
Moon Transit: 11:07 PM
Moonset: 3:50 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.0%

Best Times for Fishing or Hunting

Major Periods

1:22 PM - 3:52 PM
12:00 AM - 12:00 AM

Minor Periods

4:57 PM - 6:27 PM
3:20 AM - 4:50 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


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: 6:19 AM
Sun Transit: 12:21 AM
Sunset: 6:23 PM
Daylight: 12 hrs 4 mins
Moonrise: 5:27 PM
Moon Transit: 11:07 PM
Moonset: 3:50 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.0%

Best Times for Fishing or Hunting

Major Periods

1:22 PM - 3:52 PM
12:00 AM - 12:00 AM

Minor Periods

4:57 PM - 6:27 PM
3:20 AM - 4:50 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


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: 6:20 AM
Sun Transit: 12:20 AM
Sunset: 6:21 PM
Daylight: 12 hrs 1 mins
Moonrise: 5:45 PM
Moon Transit: 11:52 PM
Moonset: 5:00 AM
Moon Phase: Full
Moon Illumination: 99.6%

Best Times for Fishing or Hunting

Major Periods

2:07 PM - 4:37 PM
12:00 AM - 12:00 AM

Minor Periods

5:15 PM - 6:45 PM
4:30 AM - 6:00 AM

Action Rating: 5 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


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: 6:20 AM
Sun Transit: 12:20 AM
Sunset: 6:21 PM
Daylight: 12 hrs 1 mins
Moonrise: 5:45 PM
Moon Transit: 11:52 PM
Moonset: 5:00 AM
Moon Phase: Full
Moon Illumination: 99.6%

Best Times for Fishing or Hunting

Major Periods

2:07 PM - 4:37 PM
12:00 AM - 12:00 AM

Minor Periods

5:15 PM - 6:45 PM
4:30 AM - 6:00 AM

Action Rating: 5 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


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: 6:21 AM
Sun Transit: 12:20 AM
Sunset: 6:19 PM
Daylight: 11 hrs 58 mins
Moonrise: 6:04 PM
Moon Transit: 8:33 AM
Moonset: 6:12 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

8:03 AM - 10:33 AM
8:03 AM - 10:33 AM

Minor Periods

5:34 PM - 7:04 PM
5:42 AM - 7:12 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


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: 6:21 AM
Sun Transit: 12:20 AM
Sunset: 6:19 PM
Daylight: 11 hrs 58 mins
Moonrise: 6:04 PM
Moon Transit: 8:33 AM
Moonset: 6:12 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

8:03 AM - 10:33 AM
8:03 AM - 10:33 AM

Minor Periods

5:34 PM - 7:04 PM
5:42 AM - 7:12 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


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: 6:23 AM
Sun Transit: 12:20 AM
Sunset: 6:17 PM
Daylight: 11 hrs 55 mins
Moonrise: 6:25 PM
Moon Transit: 12:00 AM
Moonset: 7:26 AM
Moon Phase: Full
Moon Illumination: 97.3%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
3:39 PM - 6:09 PM

Minor Periods

5:55 PM - 7:25 PM
6:56 AM - 8:26 AM

Action Rating: 5 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


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: 6:23 AM
Sun Transit: 12:20 AM
Sunset: 6:17 PM
Daylight: 11 hrs 55 mins
Moonrise: 6:25 PM
Moon Transit: 12:00 AM
Moonset: 7:26 AM
Moon Phase: Full
Moon Illumination: 97.3%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
3:39 PM - 6:09 PM

Minor Periods

5:55 PM - 7:25 PM
6:56 AM - 8:26 AM

Action Rating: 5 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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