Water Temperature of the St. Croix River in Calais, ME
Current Water Temperature
Measurement Time: Friday, December 19, 2025, 6:45 AM EST
Temperature Locations
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Local Points of Interest
St. Stephen, NBSponsored Content
Station Name: St. Croix River at Milltown, Maine
Data Source: Water Data - usgc.gov
Elevation Above Sea Level: 62 feet / 19 meters
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 (74.0 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

Humidity: 91%
Feels Like: 51.5°F
Wind: S 21 mph
Wind Gusts: 32.4 mph
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 5 mi
UV Index: 0.1
Five Day Weather Forecast

Fri
H: 54°F
L: 34°F

Sat
H: 31°F
L: 22°F

Sun
H: 39°F
L: 25°F

Mon
H: 25°F
L: 18°F

Tue
H: 32°F
L: 17°F
Air Quality
Nitrogen Dioxide: 1.34 μg/m3
Sulphur Dioxide: 1.04 μg/m3
Ozone: 87 μg/m3
Astronomical
Sun Transit: 11:26 AM
Sunset: 3:49 PM
Daylight: 8 hrs 45 mins
Moon Transit: 11:06 AM
Moonset: 3:03 PM
Moon Phase: New
Moon Illumination: 1.1%
Best Times for Fishing or Hunting
Major Periods
1:18 AM - 3:48 AM10:36 AM - 1:06 PM
Minor Periods
2:33 PM - 4:03 PM6:39 AM - 8:09 AM
Action Rating: 5 out of 5
yellow warning - wind - in effect
Service Notice – November 2025: The Environment and Climate Change Canada (ECCC) CAP Service undergoes changes from time to time as the business of alerting evolves. For 2025, changes are expected to include... 1) ECCC's initiative to upgrade the presentation of alerts into Colour-Coded Weather Alerts is tentatively set for deployment November 26, 2025. Data changes will appear in CAP following this deployment, 2) the alert name ‘extreme cold warning’ will change to ‘cold warning’, 3) two Public zone names will change in Saskatchewan, 4) ECCC's initiative to introduce free-form polygons to represent the true threat area of a weather hazard continues, there will be changes coming to CAP and 5) other minor improvements and corrections. For more information on these changes: https://comm.collab.science.gc.ca/mailman3/hyperkitty/list/dd_info@comm.collab.science.gc.ca/ | Notification de service – novembre 2025: Le service du PAC d’Environnement et Changement climatique Canada (ECCC) subit périodiquement des changements à mesure que le système d’alerte évolue. Pour 2025, il y aura des changements incluant... 1) l'initiative d'ECCC visant à améliorer la présentation des alertes sous forme d'alertes météorologiques codées par couleur est provisoirement prévue pour un déploiement le 26 novembre 2025. Des changements aux données apparaîtront dans le PAC suite à ce déploiement, 2) le nom de l’alerte ‘avertissement de froid extrême’ changera pour ‘avertissement de froid’, 3) deux noms de zones publiques seront modifiés en Saskatchewan, 4) l’initiative d’ECCC visant à introduire des polygones libres pour représenter la véritable zone de menace d’un danger météorologique se poursuit. Des changements seront également apportés au PAC et 5) d’autres améliorations et corrections mineures. Pour plus d’informations sur ces changements: https://comm.collab.science.gc.ca/mailman3/hyperkitty/list/dd_info@comm.collab.science.gc.ca/
Effective: Thu December 18, 2025, 9:02 PM
Expires: Fri December 19, 2025, 1:02 PM
Unseasonably warm temperature and strong winds are expected. Locations: southern and south-central New Brunswick. Wind gusts: southerly 70 to 90 km/h, except gusts to 110 km/h along the Fundy coast. Time span: late Friday afternoon until early Saturday morning. Remarks: strong southerly winds will switch to the west Saturday morning and pick up in intensity during the day. Strong winds may cause tree branches to break and damage utility lines. Check transit, ferry, or flight statuses well in advance, as delays or disruptions could occur. Ensure gutters and storm drains are clear of snow, ice, and other debris. Secure loose outdoor items that could be blown around by strong winds. ### Wind warnings are issued when there is a significant risk of damaging winds. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to NBstorm@ec.gc.ca or post reports on X using #NBStorm. For more information about the alerting program, please visit: https://www.canada.ca/en/services/environment/weather/severeweather/weather-alerts/colour-coded-alerts.
yellow warning - rainfall - in effect
Service Notice – November 2025: The Environment and Climate Change Canada (ECCC) CAP Service undergoes changes from time to time as the business of alerting evolves. For 2025, changes are expected to include... 1) ECCC's initiative to upgrade the presentation of alerts into Colour-Coded Weather Alerts is tentatively set for deployment November 26, 2025. Data changes will appear in CAP following this deployment, 2) the alert name ‘extreme cold warning’ will change to ‘cold warning’, 3) two Public zone names will change in Saskatchewan, 4) ECCC's initiative to introduce free-form polygons to represent the true threat area of a weather hazard continues, there will be changes coming to CAP and 5) other minor improvements and corrections. For more information on these changes: https://comm.collab.science.gc.ca/mailman3/hyperkitty/list/dd_info@comm.collab.science.gc.ca/ | Notification de service – novembre 2025: Le service du PAC d’Environnement et Changement climatique Canada (ECCC) subit périodiquement des changements à mesure que le système d’alerte évolue. Pour 2025, il y aura des changements incluant... 1) l'initiative d'ECCC visant à améliorer la présentation des alertes sous forme d'alertes météorologiques codées par couleur est provisoirement prévue pour un déploiement le 26 novembre 2025. Des changements aux données apparaîtront dans le PAC suite à ce déploiement, 2) le nom de l’alerte ‘avertissement de froid extrême’ changera pour ‘avertissement de froid’, 3) deux noms de zones publiques seront modifiés en Saskatchewan, 4) l’initiative d’ECCC visant à introduire des polygones libres pour représenter la véritable zone de menace d’un danger météorologique se poursuit. Des changements seront également apportés au PAC et 5) d’autres améliorations et corrections mineures. Pour plus d’informations sur ces changements: https://comm.collab.science.gc.ca/mailman3/hyperkitty/list/dd_info@comm.collab.science.gc.ca/
Effective: Thu December 18, 2025, 9:04 PM
Expires: Fri December 19, 2025, 1:04 PM
Significant rainfall combined with melting snow is expected. Locations: southern New Brunswick. Total rainfall: 25 to 40 mm. Time span: Friday afternoon until early Saturday morning. Remarks: Rain and mild temperatures will lead to melting snow and minor runoff. Ensure storm drains and gutters are clear of ice and debris to reduce localized flooding. ### Visibility will likely be suddenly reduced at times. Rainfall warnings are issued when significant impacts are expected due to rainfall amounts. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to NBstorm@ec.gc.ca or post reports on X using #NBStorm. For more information about the alerting program, please visit: https://www.canada.ca/en/services/environment/weather/severeweather/weather-alerts/colour-coded-alerts.
Weather Forecast
Average Temperature: 45.2°F
Average Humidity: 87%
Wind: 28.2 mph
UV Index: 0.1
Air Quality
Nitrogen Dioxide: 1.72 μg/m3
Sulphur Dioxide: 1.31 μg/m3
Ozone: 79.4 μg/m3
Astronomical
Sun Transit: 11:26 AM
Sunset: 3:49 PM
Daylight: 8 hrs 45 mins
Moon Transit: 11:06 AM
Moonset: 3:03 PM
Moon Phase: New
Moon Illumination: 1.1%
Best Times for Fishing or Hunting
Major Periods
1:18 AM - 3:48 AM10:36 AM - 1:06 PM
Minor Periods
2:33 PM - 4:03 PM6:39 AM - 8:09 AM
Action Rating: 5 out of 5
Weather Forecast
Average Temperature: 29.2°F
Average Humidity: 60%
Wind: 18.6 mph
UV Index: 0.2
Air Quality
Nitrogen Dioxide: 1.96 μg/m3
Sulphur Dioxide: 1.52 μg/m3
Ozone: 77.32 μg/m3
Astronomical
Sun Transit: 11:27 AM
Sunset: 3:49 PM
Daylight: 8 hrs 45 mins
Moon Transit: 11:58 AM
Moonset: 3:59 PM
Moon Phase: New
Moon Illumination: 0.0%
Best Times for Fishing or Hunting
Major Periods
2:10 AM - 4:40 AM11:28 AM - 1:58 PM
Minor Periods
3:29 PM - 4:59 PM7:31 AM - 9:01 AM
Action Rating: 5 out of 5
Weather Forecast
Average Temperature: 33.6°F
Average Humidity: 78%
Wind: 15.7 mph
UV Index: 0.1
Air Quality
Nitrogen Dioxide: 5.23 μg/m3
Sulphur Dioxide: 3.06 μg/m3
Ozone: 67 μg/m3
Astronomical
Sun Transit: 11:27 AM
Sunset: 3:50 PM
Daylight: 8 hrs 45 mins
Moon Transit: 12:50 AM
Moonset: 5:03 PM
Moon Phase: New
Moon Illumination: 1.5%
Best Times for Fishing or Hunting
Major Periods
3:02 AM - 5:32 AM12:20 AM - 2:50 PM
Minor Periods
4:33 PM - 6:03 PM8:14 AM - 9:44 AM
Action Rating: 3 out of 5
Weather Forecast
Average Temperature: 23.1°F
Average Humidity: 58%
Wind: 16.3 mph
UV Index: 0.2
Air Quality
Nitrogen Dioxide: 1.98 μg/m3
Sulphur Dioxide: 1.39 μg/m3
Ozone: 73.8 μg/m3
Astronomical
Sun Transit: 11:27 AM
Sunset: 3:50 PM
Daylight: 8 hrs 45 mins
Moon Transit: 1:40 PM
Moonset: 6:11 PM
Moon Phase: Waxing Crescent
Moon Illumination: 5.5%
Best Times for Fishing or Hunting
Major Periods
3:53 AM - 6:23 AM1:10 PM - 3:40 PM
Minor Periods
5:41 PM - 7:11 PM8:47 AM - 10:17 AM
Action Rating: 3 out of 5
Weather Forecast
Average Temperature: 21.8°F
Average Humidity: 67%
Wind: 9.8 mph
UV Index: 0
Air Quality
Nitrogen Dioxide: 2.82 μg/m3
Sulphur Dioxide: 1.73 μg/m3
Ozone: 71.08 μg/m3
Astronomical
Sun Transit: 11:28 AM
Sunset: 3:51 PM
Daylight: 8 hrs 45 mins
Moon Transit: 2:28 PM
Moonset: 7:22 PM
Moon Phase: Waxing Crescent
Moon Illumination: 11.7%
Best Times for Fishing or Hunting
Major Periods
4:42 AM - 7:12 AM1:58 PM - 4:28 PM
Minor Periods
6:52 PM - 8:22 PM9:15 AM - 10:45 AM
Action Rating: 3 out of 5
