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

Current Water Temperature

33.3°F

Measurement Time: Saturday, January 17, 2026, 8:45 PM EST

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

18°F
Mist
Mist
11.5°F
30.1°F
94%
W 4.3 mph
6.6 mph
25.8°F
29.3°F
0 in
0%
1 mi
1015 mbar
0

Five Day Weather Forecast

Light freezing rain
Sun
H: 40°F
L: 30°F
Heavy snow
Mon
H: 32°F
L: 19°F
Cloudy
Tue
H: 24°F
L: 8°F
Partly Cloudy
Wed
H: 0°F
L: -6°F
Overcast
Thu
H: 11°F
L: -8°F

Air Quality

PM2.5: 10.34 μg/m3
PM10: 14.34 μg/m3
Carbon Monoxide: 152.84 μg/m3
Nitrogen Dioxide: 2.94 μg/m3
Sulphur Dioxide: 1.84 μg/m3
Ozone: 73 μg/m3

Astronomical

Sunrise: 7:02 AM
Sun Transit: 11:39 AM
Sunset: 4:17 PM
Daylight: 9 hrs 15 mins
Moonrise: 7:19 AM
Moon Transit: 11:36 AM
Moonset: 4:00 PM
Moon Phase: New
Moon Illumination: 2.5%

Best Times for Fishing or Hunting

Major Periods

1:48 AM - 4:18 AM
11:06 AM - 1:36 PM

Minor Periods

3:30 PM - 5:00 PM
6:49 AM - 8:19 AM

Action Rating: 4 out of 5

Winter Weather Advisory issued January 17 at 12:17PM EST until January 17 at 10:00PM EST by NWS Caribou ME

Effective: Sat January 17, 2026, 12:17 PM
Expires: Sat January 17, 2026, 10:00 PM

* WHAT...Snow. Additional snow accumulations between 1 and 3 inches. * WHERE...Northern Washington, Southeast Aroostook, and Central Penobscot Counties. * WHEN...Until 10 PM EST this evening. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Plan on slippery road conditions.

A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Expect snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for Maine can be obtained by going to newengland511.org.


Winter Weather Advisory issued January 18 at 12:45AM EST until January 19 at 6:00AM EST by NWS Caribou ME

Effective: Sun January 18, 2026, 12:45 AM
Expires: Sun January 18, 2026, 12:45 PM

* WHAT...Snow expected. Total snow accumulations between 3 and 6 inches. * WHERE...Coastal Hancock, Coastal Washington, Central Washington, and Interior Hancock Counties. * WHEN...From 6 PM this evening to 6 AM EST Monday. * IMPACTS...Plan on slippery road conditions.

A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Expect snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for Maine can be obtained by going to newengland511.org.


Sunday, January 18, 2026

Weather Forecast

Light freezing rain
39.5°F
29.5°F
32.6°F
87%
0.01 in
88%
15%
8.1 mph
0.1


Air Quality

AQI: 1 - Good
PM2.5: 8.01 μg/m3
PM10: 10.8 μg/m3
Carbon Monoxide: 168.9 μg/m3
Nitrogen Dioxide: 4.1 μg/m3
Sulphur Dioxide: 2.66 μg/m3
Ozone: 64.54 μg/m3

Astronomical

Sunrise: 7:02 AM
Sun Transit: 11:39 AM
Sunset: 4:17 PM
Daylight: 9 hrs 15 mins
Moonrise: 7:19 AM
Moon Transit: 11:36 AM
Moonset: 4:00 PM
Moon Phase: New
Moon Illumination: 2.5%

Best Times for Fishing or Hunting

Major Periods

1:48 AM - 4:18 AM
11:06 AM - 1:36 PM

Minor Periods

3:30 PM - 5:00 PM
6:49 AM - 8:19 AM

Action Rating: 4 out of 5

Monday, January 19, 2026

Weather Forecast

Heavy snow
32.4°F
18.8°F
28.4°F
93%
1.01 in
74%
52%
21.7 mph
0


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: 7:02 AM
Sun Transit: 11:39 AM
Sunset: 4:19 PM
Daylight: 9 hrs 17 mins
Moonrise: 7:48 AM
Moon Transit: 12:25 AM
Moonset: 5:11 PM
Moon Phase: New
Moon Illumination: 0.4%

Best Times for Fishing or Hunting

Major Periods

2:38 AM - 5:08 AM
11:55 AM - 2:25 PM

Minor Periods

4:41 PM - 6:11 PM
7:18 AM - 8:48 AM

Action Rating: 5 out of 5

Tuesday, January 20, 2026

Weather Forecast

Cloudy
23.8°F
8.2°F
16.2°F
81%
0 in
0%
10%
12.1 mph
1


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: 7:01 AM
Sun Transit: 11:40 AM
Sunset: 4:20 PM
Daylight: 9 hrs 19 mins
Moonrise: 8:13 AM
Moon Transit: 1:12 PM
Moonset: 6:24 PM
Moon Phase: New
Moon Illumination: 3.1%

Best Times for Fishing or Hunting

Major Periods

3:27 AM - 5:57 AM
12:42 AM - 3:12 PM

Minor Periods

5:54 PM - 7:24 PM
7:43 AM - 9:13 AM

Action Rating: 3 out of 5

Wednesday, January 21, 2026

Weather Forecast

Partly Cloudy
0.1°F
-5.8°F
-2.5°F
81%
0 in
0%
0%
15.4 mph
2


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: 7:00 AM
Sun Transit: 11:40 AM
Sunset: 4:22 PM
Daylight: 9 hrs 21 mins
Moonrise: 8:33 AM
Moon Transit: 1:58 PM
Moonset: 7:35 PM
Moon Phase: Waxing Crescent
Moon Illumination: 8.1%

Best Times for Fishing or Hunting

Major Periods

4:13 AM - 6:43 AM
1:28 PM - 3:58 PM

Minor Periods

7:05 PM - 8:35 PM
8:03 AM - 9:33 AM

Action Rating: 4 out of 5

Thursday, January 22, 2026

Weather Forecast

Overcast
10.8°F
-7.9°F
-0.6°F
85%
0 in
0%
0%
10.1 mph
1


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: 6:59 AM
Sun Transit: 11:40 AM
Sunset: 4:23 PM
Daylight: 9 hrs 23 mins
Moonrise: 8:51 AM
Moon Transit: 2:42 PM
Moonset: 8:47 PM
Moon Phase: Waxing Crescent
Moon Illumination: 15.4%

Best Times for Fishing or Hunting

Major Periods

4:57 AM - 7:27 AM
2:12 PM - 4:42 PM

Minor Periods

8:17 PM - 9:47 PM
8:21 AM - 9:51 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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