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

Current Water Temperature

75.7°F

Measurement Time: Monday, August 3, 2026, 4:45 AM EDT

Temperature Locations

View Nearby Locations     View All Maine Locations     View Locations Near Me

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

63.5°F
Fog
Fog
63.3°F
63.5°F
100%
SSE 8.7 mph
13.1 mph
63.5°F
63.5°F
0 in
100%
1 mi
1012 mbar
0.4

Five Day Weather Forecast

Fog
Mon
H: 73°F
L: 62°F
Sunny
Tue
H: 84°F
L: 62°F
Sunny
Wed
H: 88°F
L: 58°F
Sunny
Thu
H: 85°F
L: 66°F
Sunny
Fri
H: 90°F
L: 65°F

Air Quality

AQI: 1 - Good
PM2.5: 1.9 μg/m3
PM10: 2.6 μg/m3
Carbon Monoxide: 108 μg/m3
Nitrogen Dioxide: 1.3 μg/m3
Sulphur Dioxide: 0.8 μg/m3
Ozone: 58 μg/m3

Astronomical

Sunrise: 5:16 AM
Sun Transit: 12:35 AM
Sunset: 7:54 PM
Daylight: 14 hrs 37 mins
Moonrise: 9:52 PM
Moon Transit: 12:00 AM
Moonset: 10:39 AM
Moon Phase: Waning Gibbous
Moon Illumination: 65.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
6:59 PM - 9:29 PM

Minor Periods

9:22 PM - 10:52 PM
10:09 AM - 11:39 AM

Action Rating: 2 out of 5

Small Craft Advisory issued August 2 at 7:50PM EDT until August 4 at 8:00AM EDT by NWS Caribou ME

Effective: Sun August 2, 2026, 7:50 PM
Expires: Mon August 3, 2026, 8:00 AM

* WHAT...Southwest winds 15 to 25 kt with gusts up to 30 kt and seas 6 to 9 ft expected. * WHERE...Coastal Waters from Eastport, ME to Schoodic Point, ME out 25 NM and Coastal Waters from Schoodic Point, ME to Stonington, ME out 25 NM. * WHEN...From noon Monday to 8 AM EDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.


Small Craft Advisory issued August 3 at 5:14AM EDT until August 4 at 8:00PM EDT by NWS Caribou ME

Effective: Mon August 3, 2026, 5:14 AM
Expires: Mon August 3, 2026, 3:00 PM

* WHAT...Southwest winds 10 to 20 kt with gusts up to 30 kt and seas 6 to 9 ft expected. * WHERE...Coastal Waters from Eastport, ME to Schoodic Point, ME out 25 NM and Coastal Waters from Schoodic Point, ME to Stonington, ME out 25 NM. * WHEN...From noon today to 8 PM EDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.
Monday, August 3, 2026

Weather Forecast

Fog
72.7°F
62.1°F
67.3°F
97%
0.35 in
94%
0%
16.6 mph
1


Air Quality

AQI: 1 - Good
PM2.5: 2.95 μg/m3
PM10: 4.07 μg/m3
Carbon Monoxide: 99.08 μg/m3
Nitrogen Dioxide: 1.05 μg/m3
Sulphur Dioxide: 0.67 μg/m3
Ozone: 49.42 μg/m3

Astronomical

Sunrise: 5:16 AM
Sun Transit: 12:35 AM
Sunset: 7:54 PM
Daylight: 14 hrs 37 mins
Moonrise: 9:52 PM
Moon Transit: 12:00 AM
Moonset: 10:39 AM
Moon Phase: Waning Gibbous
Moon Illumination: 65.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
6:59 PM - 9:29 PM

Minor Periods

9:22 PM - 10:52 PM
10:09 AM - 11:39 AM

Action Rating: 2 out of 5

Tuesday, August 4, 2026

Weather Forecast

Sunny
83.7°F
61.9°F
71.2°F
62%
0.01 in
17%
0%
15.4 mph
7.4


Air Quality

AQI: 1 - Good
PM2.5: 2.13 μg/m3
PM10: 2.34 μg/m3
Carbon Monoxide: 111.71 μg/m3
Nitrogen Dioxide: 0.92 μg/m3
Sulphur Dioxide: 0.68 μg/m3
Ozone: 66.88 μg/m3

Astronomical

Sunrise: 5:17 AM
Sun Transit: 12:35 AM
Sunset: 7:52 PM
Daylight: 14 hrs 35 mins
Moonrise: 10:14 PM
Moon Transit: 4:44 AM
Moonset: 11:52 AM
Moon Phase: Last Quarter
Moon Illumination: 54.6%

Best Times for Fishing or Hunting

Major Periods

4:14 AM - 6:44 AM
7:46 PM - 10:16 PM

Minor Periods

9:44 PM - 11:14 PM
11:22 AM - 12:52 AM

Action Rating: 3 out of 5

Wednesday, August 5, 2026

Weather Forecast

Sunny
88°F
58.2°F
72.2°F
59%
0 in
4%
0%
11.9 mph
7.7


Air Quality

AQI: 1 - Good
PM2.5: 6.37 μg/m3
PM10: 6.6 μg/m3
Carbon Monoxide: 126.63 μg/m3
Nitrogen Dioxide: 1.19 μg/m3
Sulphur Dioxide: 1.68 μg/m3
Ozone: 81.71 μg/m3

Astronomical

Sunrise: 5:19 AM
Sun Transit: 12:35 AM
Sunset: 7:51 PM
Daylight: 14 hrs 32 mins
Moonrise: 10:41 PM
Moon Transit: 5:33 AM
Moonset: 1:09 PM
Moon Phase: Last Quarter
Moon Illumination: 43.2%

Best Times for Fishing or Hunting

Major Periods

5:03 AM - 7:33 AM
8:37 PM - 11:07 PM

Minor Periods

10:11 PM - 11:41 PM
12:39 AM - 2:09 PM

Action Rating: 3 out of 5

Thursday, August 6, 2026

Weather Forecast

Sunny
85.1°F
66.2°F
72.7°F
88%
0.23 in
82%
0%
7.8 mph
8


Air Quality

AQI: 1 - Good
PM2.5: 7.98 μg/m3
PM10: 9.01 μg/m3
Carbon Monoxide: 145.5 μg/m3
Nitrogen Dioxide: 1.33 μg/m3
Sulphur Dioxide: 1.3 μg/m3
Ozone: 103.96 μg/m3

Astronomical

Sunrise: 5:20 AM
Sun Transit: 12:35 AM
Sunset: 7:49 PM
Daylight: 14 hrs 30 mins
Moonrise: 11:15 PM
Moon Transit: 6:26 AM
Moonset: 2:29 PM
Moon Phase: Last Quarter
Moon Illumination: 32.3%

Best Times for Fishing or Hunting

Major Periods

5:56 AM - 8:26 AM
12:00 AM - 12:00 AM

Minor Periods

12:00 AM - 12:00 AM
1:59 PM - 3:29 PM

Action Rating: 2 out of 5

Friday, August 7, 2026

Weather Forecast

Sunny
89.7°F
64.5°F
74.2°F
83%
0.11 in
69%
0%
5.4 mph
7


Air Quality

AQI: 1 - Good
PM2.5: 8.01 μg/m3
PM10: 9.34 μg/m3
Carbon Monoxide: 178.22 μg/m3
Nitrogen Dioxide: 1.43 μg/m3
Sulphur Dioxide: 1.21 μg/m3
Ozone: 92.33 μg/m3

Astronomical

Sunrise: 5:21 AM
Sun Transit: 12:34 AM
Sunset: 7:48 PM
Daylight: 14 hrs 27 mins
Moonrise: 12:15 AM
Moon Transit: 7:25 AM
Moonset: 3:47 PM
Moon Phase: Last Quarter
Moon Illumination: 22.2%

Best Times for Fishing or Hunting

Major Periods

6:55 AM - 9:25 AM
12:00 AM - 12:00 AM

Minor Periods

3:17 PM - 4:47 PM
12:00 AM - 12:00 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.

Webcams Near Calais, ME

Sponsored Content