Weather WorldMount Desert, ME Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Mount Desert Weather Forecast
| TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY |
 |  |  |  |  |  | | | | | |  |
| Partly Cloudy | Mostly Cloudy | Chance of Rain | Patchy Fog | Mostly Clear | Mostly Sunny | Clear | Sunny | Clear | Mostly Sunny | Partly Cloudy | Chance of Showers |
| Lo: 45°FLo: 7°C | Hi: 59°FHi: 15°C | Lo: 49°FLo: 9°C | Hi: 65°FHi: 18°C | Lo: 41°FLo: 5°C | Hi: 61°FHi: 16°C | Lo: 41°FLo: 5°C | Hi: 65°FHi: 18°C | Lo: 41°FLo: 5°C | Hi: 65°FHi: 18°C | Lo: 41°FLo: 5°C | Hi: 65°FHi: 18°C |
| POP: 50% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 400 PM EDT Sat Sep 19 2026 
Mount Desert Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Mount Desert Weather Map
Mount Desert Quick Facts
Mount Desert Forecast Discussion
Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 230 PM EDT Sat Sep 19 2026
Key Messages
1) Potential for patchy frost tonight and Monday night across the north.
Discussion
... KEY MESSAGE 1...Potential for patchy frost tonight and Monday night across the north.
KEY MESSAGE 1 DESCRIPTION... High pressure system has settled over Quebec today. Confidence in frost potential is relatively low, since temperatures are heavily going to depend on how fast cloud deck moves in. Upper air model soundings indicate the weak winds at the surface with lower surface dewpoints. Thus, lower ...