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

Current Water Temperature

36.1°F

Measurement Time: Sunday, March 29, 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

34.7°F
Overcast
Overcast
26.2°F
38.9°F
32%
WSW 11.9 mph
13.6 mph
31.3°F
11.1°F
0 in
0%
6 mi
1027 mbar
2.6

Five Day Weather Forecast

Partly Cloudy
Sun
H: 41°F
L: 10°F
Overcast
Mon
H: 51°F
L: 33°F
Moderate rain
Tue
H: 46°F
L: 33°F
Heavy rain
Wed
H: 56°F
L: 33°F
Heavy snow
Thu
H: 35°F
L: 27°F

Air Quality

AQI: 1 - Good
PM2.5: 3.04 μg/m3
PM10: 3.94 μg/m3
Carbon Monoxide: 186.84 μg/m3
Nitrogen Dioxide: 2.24 μg/m3
Sulphur Dioxide: 1.24 μg/m3
Ozone: 105 μg/m3

Astronomical

Sunrise: 6:15 AM
Sun Transit: 12:00 AM
Sunset: 6:54 PM
Daylight: 12 hrs 38 mins
Moonrise: 3:19 PM
Moon Transit: 10:22 PM
Moonset: 4:50 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 86.2%

Best Times for Fishing or Hunting

Major Periods

12:36 AM - 3:06 PM
12:00 AM - 12:00 AM

Minor Periods

2:49 PM - 4:19 PM
4:20 AM - 5:50 AM

Action Rating: 3 out of 5

Sunday, March 29, 2026

Weather Forecast

Partly Cloudy
41.2°F
10.4°F
27.6°F
53%
0 in
0%
0%
12.5 mph
0.7


Air Quality

AQI: 1 - Good
PM2.5: 3.84 μg/m3
PM10: 4.91 μg/m3
Carbon Monoxide: 209.24 μg/m3
Nitrogen Dioxide: 2.74 μg/m3
Sulphur Dioxide: 1.55 μg/m3
Ozone: 93.48 μg/m3

Astronomical

Sunrise: 6:15 AM
Sun Transit: 12:00 AM
Sunset: 6:54 PM
Daylight: 12 hrs 38 mins
Moonrise: 3:19 PM
Moon Transit: 10:22 PM
Moonset: 4:50 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 86.2%

Best Times for Fishing or Hunting

Major Periods

12:36 AM - 3:06 PM
12:00 AM - 12:00 AM

Minor Periods

2:49 PM - 4:19 PM
4:20 AM - 5:50 AM

Action Rating: 3 out of 5

Monday, March 30, 2026

Weather Forecast

Overcast
50.9°F
32.7°F
41.5°F
77%
0 in
0%
0%
15.7 mph
0.6


Air Quality

AQI: 1 - Good
PM2.5: 8.74 μg/m3
PM10: 11.03 μg/m3
Carbon Monoxide: 198.4 μg/m3
Nitrogen Dioxide: 4.01 μg/m3
Sulphur Dioxide: 2.97 μg/m3
Ozone: 95.76 μg/m3

Astronomical

Sunrise: 6:14 AM
Sun Transit: 12:33 AM
Sunset: 6:55 PM
Daylight: 12 hrs 41 mins
Moonrise: 4:32 PM
Moon Transit: 11:06 PM
Moonset: 5:10 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 93.0%

Best Times for Fishing or Hunting

Major Periods

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

Minor Periods

4:02 PM - 5:32 PM
4:40 AM - 6:10 AM

Action Rating: 3 out of 5

Tuesday, March 31, 2026

Weather Forecast

Moderate rain
45.7°F
32.7°F
38.8°F
61%
0.21 in
77%
5%
9.8 mph
0.1


Air Quality

AQI: 1 - Good
PM2.5: 8.54 μg/m3
PM10: 9.38 μg/m3
Carbon Monoxide: 184.08 μg/m3
Nitrogen Dioxide: 4.18 μg/m3
Sulphur Dioxide: 2.77 μg/m3
Ozone: 89.16 μg/m3

Astronomical

Sunrise: 6:12 AM
Sun Transit: 12:33 AM
Sunset: 6:56 PM
Daylight: 12 hrs 44 mins
Moonrise: 5:42 PM
Moon Transit: 11:49 PM
Moonset: 5:28 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.6%

Best Times for Fishing or Hunting

Major Periods

2:05 PM - 4:35 PM
12:00 AM - 12:00 AM

Minor Periods

5:12 PM - 6:42 PM
4:58 AM - 6:28 AM

Action Rating: 4 out of 5

Wednesday, April 1, 2026

Weather Forecast

Heavy rain
56.1°F
33.4°F
43.2°F
96%
1.73 in
84%
3%
11.2 mph
0.1


Air Quality

AQI: 1 - Good
PM2.5: 7.45 μg/m3
PM10: 9.46 μg/m3
Carbon Monoxide: 172.1 μg/m3
Nitrogen Dioxide: 3.23 μg/m3
Sulphur Dioxide: 1.9 μg/m3
Ozone: 99.24 μg/m3

Astronomical

Sunrise: 6:10 AM
Sun Transit: 12:33 AM
Sunset: 6:57 PM
Daylight: 12 hrs 48 mins
Moonrise: 6:51 PM
Moon Transit: 12:00 AM
Moonset: 5:45 AM
Moon Phase: Full
Moon Illumination: 99.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:48 PM - 5:18 PM

Minor Periods

6:21 PM - 7:51 PM
5:15 AM - 6:45 AM

Action Rating: 3 out of 5

Thursday, April 2, 2026

Weather Forecast

Heavy snow
34.5°F
26.6°F
31.7°F
88%
0.2 in
71%
28%
8.9 mph
0.1


Air Quality

AQI: 1 - Good
PM2.5: 1.53 μg/m3
PM10: 1.67 μg/m3
Carbon Monoxide: 166.44 μg/m3
Nitrogen Dioxide: 1.62 μg/m3
Sulphur Dioxide: 1.21 μg/m3
Ozone: 93.85 μg/m3

Astronomical

Sunrise: 6:08 AM
Sun Transit: 12:32 AM
Sunset: 6:59 PM
Daylight: 12 hrs 51 mins
Moonrise: 7:59 PM
Moon Transit: 12:32 AM
Moonset: 6:03 AM
Moon Phase: Full
Moon Illumination: 99.5%

Best Times for Fishing or Hunting

Major Periods

12:02 AM - 2:32 AM
3:30 PM - 6:00 PM

Minor Periods

7:29 PM - 8:59 PM
5:33 AM - 7:03 AM

Action Rating: 3 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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