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

Current Water Temperature

32.2°F

Measurement Time: Thursday, January 22, 2026, 12:45 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

27.7°F
Clear
Clear
22.8°F
31.5°F
87%
SSW 4.3 mph
8.9 mph
25.6°F
26.7°F
0 in
0%
6 mi
1009 mbar
0

Five Day Weather Forecast

Moderate or heavy snow showers
Thu
H: 36°F
L: 16°F
Partly Cloudy
Fri
H: 27°F
L: 7°F
Sunny
Sat
H: 9°F
L: -2°F
Sunny
Sun
H: 11°F
L: -4°F
Moderate snow
Mon
H: 11°F
L: 8°F

Air Quality

AQI: 1 - Good
PM2.5: 2.74 μg/m3
PM10: 2.74 μg/m3
Carbon Monoxide: 191.84 μg/m3
Nitrogen Dioxide: 3.94 μg/m3
Sulphur Dioxide: 1.64 μg/m3
Ozone: 73 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

Cold Weather Advisory issued January 22 at 12:44PM EST until January 24 at 10:00AM EST by NWS Caribou ME

Effective: Thu January 22, 2026, 12:44 PM
Expires: Fri January 23, 2026, 3:00 AM

* WHAT...Very cold wind chills as low as 28 below expected. * WHERE...Coastal Hancock, Coastal Washington, Central Washington, Interior Hancock, and Southern Penobscot Counties. * WHEN...From 1 AM to 10 AM EST Saturday. * IMPACTS...The dangerously cold wind chills as low as 30 below zero could cause frostbite on exposed skin in as little as 15 minutes. Frostbite and hypothermia will occur if unprotected skin is exposed to these temperatures.

Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves.


Extreme Cold Warning issued January 22 at 12:44PM EST until January 24 at 10:00AM EST by NWS Caribou ME

Effective: Thu January 22, 2026, 12:44 PM
Expires: Fri January 23, 2026, 3:00 AM

* WHAT...Dangerously cold wind chills as low as 30 below expected. * WHERE...Southern Piscataquis, Northern Washington, and Central Penobscot Counties. * WHEN...From 1 AM to 10 AM EST Saturday. * IMPACTS...The dangerously cold wind chills as low as 30 below zero could cause frostbite on exposed skin in as little as 10 minutes.

Dress in layers including a hat, face mask, and gloves if you must go outside.
Thursday, January 22, 2026

Weather Forecast

Moderate or heavy snow showers
35.6°F
16.2°F
26.9°F
87%
0.16 in
65%
42%
10.1 mph
0.1


Air Quality

AQI: 1 - Good
PM2.5: 5.13 μg/m3
PM10: 6.61 μg/m3
Carbon Monoxide: 180.4 μg/m3
Nitrogen Dioxide: 4 μg/m3
Sulphur Dioxide: 2.26 μg/m3
Ozone: 79.08 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

Friday, January 23, 2026

Weather Forecast

Partly Cloudy
27°F
7°F
21.9°F
49%
0 in
0%
3%
14.8 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 2.53 μg/m3
PM10: 2.55 μg/m3
Carbon Monoxide: 170.08 μg/m3
Nitrogen Dioxide: 2.92 μg/m3
Sulphur Dioxide: 1.52 μg/m3
Ozone: 77.12 μg/m3

Astronomical

Sunrise: 6:59 AM
Sun Transit: 11:41 AM
Sunset: 4:24 PM
Daylight: 9 hrs 26 mins
Moonrise: 9:09 AM
Moon Transit: 9:54 AM
Moonset: 10:00 PM
Moon Phase: Waxing Crescent
Moon Illumination: 24.4%

Best Times for Fishing or Hunting

Major Periods

9:24 AM - 11:54 AM
9:24 AM - 11:54 AM

Minor Periods

9:30 PM - 11:00 PM
8:39 AM - 10:09 AM

Action Rating: 2 out of 5

Saturday, January 24, 2026

Weather Forecast

Sunny
8.8°F
-2°F
4.8°F
42%
0 in
0%
0%
15.9 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 1.59 μg/m3
PM10: 1.72 μg/m3
Carbon Monoxide: 157.32 μg/m3
Nitrogen Dioxide: 1.88 μg/m3
Sulphur Dioxide: 1.21 μg/m3
Ozone: 71.44 μg/m3

Astronomical

Sunrise: 6:58 AM
Sun Transit: 11:41 AM
Sunset: 4:26 PM
Daylight: 9 hrs 28 mins
Moonrise: 9:28 AM
Moon Transit: 4:13 PM
Moonset: 11:15 PM
Moon Phase: First Quarter
Moon Illumination: 34.7%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
3:43 PM - 6:13 PM

Minor Periods

12:00 AM - 12:00 AM
8:58 AM - 10:28 AM

Action Rating: 2 out of 5

Sunday, January 25, 2026

Weather Forecast

Sunny
11.1°F
-3.8°F
2.9°F
49%
0 in
0%
0%
9.2 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 1.9 μg/m3
PM10: 2.01 μg/m3
Carbon Monoxide: 164.4 μg/m3
Nitrogen Dioxide: 2.6 μg/m3
Sulphur Dioxide: 1.24 μg/m3
Ozone: 68 μg/m3

Astronomical

Sunrise: 6:57 AM
Sun Transit: 11:41 AM
Sunset: 4:27 PM
Daylight: 9 hrs 30 mins
Moonrise: 9:49 AM
Moon Transit: 5:02 PM
Moonset: 12:15 AM
Moon Phase: First Quarter
Moon Illumination: 45.8%

Best Times for Fishing or Hunting

Major Periods

7:15 AM - 9:45 AM
4:32 PM - 7:02 PM

Minor Periods

9:19 AM - 10:49 AM
12:00 AM - 12:00 AM

Action Rating: 4 out of 5

Monday, January 26, 2026

Weather Forecast

Moderate snow
11.1°F
7.7°F
9.7°F
84%
0.17 in
71%
60%
10.7 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 2.51 μg/m3
PM10: 2.69 μg/m3
Carbon Monoxide: 173.23 μg/m3
Nitrogen Dioxide: 3.61 μg/m3
Sulphur Dioxide: 1.35 μg/m3
Ozone: 68.85 μg/m3

Astronomical

Sunrise: 6:56 AM
Sun Transit: 11:41 AM
Sunset: 4:28 PM
Daylight: 9 hrs 33 mins
Moonrise: 10:14 AM
Moon Transit: 5:56 PM
Moonset: 12:34 AM
Moon Phase: First Quarter
Moon Illumination: 57.1%

Best Times for Fishing or Hunting

Major Periods

8:07 AM - 10:37 AM
5:26 PM - 7:56 PM

Minor Periods

9:44 AM - 11:14 AM
12:04 AM - 1:34 AM

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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