Weather for Monroe, Michigan
Current Weather
Five Day Weather Forecast
Sat
H: 65°F
L: 42°F
Sun
H: 50°F
L: 35°F
Mon
H: 46°F
L: 30°F
Tue
H: 68°F
L: 38°F
Wed
H: 57°F
L: 47°F
Air Quality
Nitrogen Dioxide: 3.95 μg/m3
Sulphur Dioxide: 1.65 μg/m3
Ozone: 88 μg/m3
Astronomical
Sun Transit: 1:33 PM
Sunset: 8:19 PM
Daylight: 13 hrs 30 mins
Moon Transit: 2:36 PM
Moonset: 10:24 PM
Moon Phase: New
Moon Illumination: 1.2%
Best Times for Fishing or Hunting
Major Periods
2:31 AM - 5:01 AM2:06 PM - 4:36 PM
Minor Periods
9:54 PM - 11:24 PM6:35 AM - 8:05 AM
Action Rating: 4 out of 5
Frost Advisory issued April 18 at 2:21PM EDT until April 19 at 10:00AM EDT by NWS Detroit/Pontiac MI
Effective: Sat April 18, 2026, 2:21 PM
Expires: Sat April 18, 2026, 10:30 PM
* WHAT...For the Frost Advisory, temperatures as low as 33 will result in frost formation. For the Freeze Watch, sub-freezing temperatures as low as 20 possible. * WHERE...A portion of southeast Michigan. * WHEN...For the Frost Advisory, from 2 AM to 10 AM EDT Sunday. For the Freeze Watch, from Sunday evening through Monday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.
Take steps now to protect tender plants from the cold.
Freeze Watch issued April 18 at 2:21PM EDT until April 20 at 11:00AM EDT by NWS Detroit/Pontiac MI
Effective: Sat April 18, 2026, 2:21 PM
Expires: Sat April 18, 2026, 10:30 PM
* WHAT...For the Frost Advisory, temperatures as low as 33 will result in frost formation. For the Freeze Watch, sub-freezing temperatures as low as 20 possible. * WHERE...A portion of southeast Michigan. * WHEN...For the Frost Advisory, from 2 AM to 10 AM EDT Sunday. For the Freeze Watch, from Sunday evening through Monday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.
Take steps now to protect tender plants from the cold.
squall warning changed
Service Notice – February 2026: The Environment and Climate Change Canada (ECCC) CAP Service undergoes changes from time to time as the business of alerting evolves. For 2026, changes are expected to include... 1) ECCC's initiative to introduce free-form polygons to represent the true threat area of a weather hazard is tentatively set for Spring 2026 deployment. Data changes will appear in CAP following this deployment and 2) 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 – février 2026: Le service du PAC d’Environnement et Changement climatique Canada (ECCC) subit périodiquement des changements à mesure que le système d’alerte évolue. Pour 2026, il y aura des changements incluant... 1) l’initiative d’ECCC visant à introduire des polygones libres pour représenter la véritable zone de menace d’un danger météorologique devrait être déployée provisoirement au printemps 2026. Des changements de données apparaîtront dans le PAC à la suite de ce déploiement et 2) 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: Sat April 18, 2026, 3:28 PM
Expires: Sat April 18, 2026, 3:28 PM
###
squall warning in effect
Service Notice – February 2026: The Environment and Climate Change Canada (ECCC) CAP Service undergoes changes from time to time as the business of alerting evolves. For 2026, changes are expected to include... 1) ECCC's initiative to introduce free-form polygons to represent the true threat area of a weather hazard is tentatively set for Spring 2026 deployment. Data changes will appear in CAP following this deployment and 2) 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 – février 2026: Le service du PAC d’Environnement et Changement climatique Canada (ECCC) subit périodiquement des changements à mesure que le système d’alerte évolue. Pour 2026, il y aura des changements incluant... 1) l’initiative d’ECCC visant à introduire des polygones libres pour représenter la véritable zone de menace d’un danger météorologique devrait être déployée provisoirement au printemps 2026. Des changements de données apparaîtront dans le PAC à la suite de ce déploiement et 2) 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: Sat April 18, 2026, 3:10 PM
Expires: Sat April 18, 2026, 6:09 PM
Squalls with wind gusts up to 35 knots are expected or occurring in the area. As of 3:10 p.m. EDT, a line of showers from near Merlin to Pelee Island is moving east at 25 knots. ### Please continue to monitor alerts and forecasts issued by Environment Canada. For more information monitor Canadian Coast Guard radio or Weatheradio stations.
Mariners are advised to prepare for squalls. If underway, seek safe harbour immediately.
squall warning in effect
Service Notice – February 2026: The Environment and Climate Change Canada (ECCC) CAP Service undergoes changes from time to time as the business of alerting evolves. For 2026, changes are expected to include... 1) ECCC's initiative to introduce free-form polygons to represent the true threat area of a weather hazard is tentatively set for Spring 2026 deployment. Data changes will appear in CAP following this deployment and 2) 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 – février 2026: Le service du PAC d’Environnement et Changement climatique Canada (ECCC) subit périodiquement des changements à mesure que le système d’alerte évolue. Pour 2026, il y aura des changements incluant... 1) l’initiative d’ECCC visant à introduire des polygones libres pour représenter la véritable zone de menace d’un danger météorologique devrait être déployée provisoirement au printemps 2026. Des changements de données apparaîtront dans le PAC à la suite de ce déploiement et 2) 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: Sat April 18, 2026, 3:10 PM
Expires: Sat April 18, 2026, 6:09 PM
Squalls with wind gusts up to 35 knots are expected or occurring in the area. ### Please continue to monitor alerts and forecasts issued by Environment Canada. For more information monitor Canadian Coast Guard radio or Weatheradio stations.
Mariners are advised to prepare for squalls. If underway, seek safe harbour immediately.
Weather Forecast
Air Quality
Nitrogen Dioxide: 5.73 μg/m3
Sulphur Dioxide: 2.79 μg/m3
Ozone: 82.56 μg/m3
Astronomical
Sun Transit: 1:33 PM
Sunset: 8:19 PM
Daylight: 13 hrs 30 mins
Moon Transit: 2:36 PM
Moonset: 10:24 PM
Moon Phase: New
Moon Illumination: 1.2%
Best Times for Fishing or Hunting
Major Periods
2:31 AM - 5:01 AM2:06 PM - 4:36 PM
Minor Periods
9:54 PM - 11:24 PM6:35 AM - 8:05 AM
Action Rating: 4 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 3.42 μg/m3
Sulphur Dioxide: 1.73 μg/m3
Ozone: 89.68 μg/m3
Astronomical
Sun Transit: 1:33 PM
Sunset: 8:20 PM
Daylight: 13 hrs 32 mins
Moon Transit: 3:37 PM
Moonset: 11:44 PM
Moon Phase: Waxing Crescent
Moon Illumination: 4.9%
Best Times for Fishing or Hunting
Major Periods
3:30 AM - 6:00 AM3:07 PM - 5:37 PM
Minor Periods
12:00 AM - 12:00 AM7:13 AM - 8:43 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 3.73 μg/m3
Sulphur Dioxide: 1.7 μg/m3
Ozone: 85.36 μg/m3
Astronomical
Sun Transit: 1:33 PM
Sunset: 8:21 PM
Daylight: 13 hrs 35 mins
Moon Transit: 4:42 PM
Moonset: 12:44 AM
Moon Phase: Waxing Crescent
Moon Illumination: 10.8%
Best Times for Fishing or Hunting
Major Periods
4:33 AM - 7:03 AM4:12 PM - 6:42 PM
Minor Periods
8:01 AM - 9:31 AM12:00 AM - 12:00 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 5.92 μg/m3
Sulphur Dioxide: 3.15 μg/m3
Ozone: 83.92 μg/m3
Astronomical
Sun Transit: 1:32 PM
Sunset: 8:22 PM
Daylight: 13 hrs 38 mins
Moon Transit: 5:47 PM
Moonset: 12:58 AM
Moon Phase: Waxing Crescent
Moon Illumination: 18.8%
Best Times for Fishing or Hunting
Major Periods
5:38 AM - 8:08 AM5:17 PM - 7:47 PM
Minor Periods
9:01 AM - 10:31 AM12:28 AM - 1:58 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 9.17 μg/m3
Sulphur Dioxide: 2.9 μg/m3
Ozone: 72.38 μg/m3
Astronomical
Sun Transit: 1:32 PM
Sunset: 8:23 PM
Daylight: 13 hrs 40 mins
Moon Transit: 6:49 PM
Moonset: 1:59 AM
Moon Phase: Waxing Crescent
Moon Illumination: 28.4%
Best Times for Fishing or Hunting
Major Periods
6:42 AM - 9:12 AM6:19 PM - 8:49 PM
Minor Periods
10:12 AM - 11:42 AM1:29 AM - 2:59 AM
Action Rating: 4 out of 5