News Headlines
- Spring 2026 Frost/Freeze Program Expands North May 21st
- Updates to the National Water Prediction Service (NWPS) Website June 15, 2026
- How Much Snow Fell This Season, and How Did it Compare to Average?
- Significant Drought Improvement in Eastern/Northern Maine, see the Latest Drought Information Statement
Hazardous Weather Conditions
Current conditions at
Greenville (KGNR)
Lat: 45.46°NLon: 69.55°WElev: 1394ft.53°F
12°C
| Humidity | 32% |
| Wind Speed | NW 18 G 28 mph |
| Barometer | 30.14 in (1021.6 mb) |
| Dewpoint | 24°F (-4°C) |
| Visibility | NA |
| Wind Chill | 48°F (9°C) |
| Last update | 21 May 3:56 pm EDT |
Extended Forecast for
3 Miles W Katahdin Iron Works State Park ME
Frost Advisory May 22, 12:00am until May 22, 07:00am
Tonight
Low: 36 °F
Mostly Clear
Friday
High: 62 °F
Sunny
Friday Night
Low: 37 °F
Mostly Clear
then Areas
FrostSaturday
High: 67 °F
Sunny
Saturday Night
Low: 43 °F
Mostly Cloudy
Sunday
High: 61 °F
Mostly Cloudy
Sunday Night
Low: 41 °F
Chance
ShowersMemorial Day
High: 54 °F
Showers
LikelyMonday Night
Low: 45 °F
Chance
Showers
Detailed Forecast
Tonight
Mostly clear, with a low around 36. Northwest wind 5 to 9 mph becoming light after midnight.
Friday
Sunny, with a high near 62. Northwest wind 6 to 11 mph, with gusts as high as 25 mph.
Friday Night
Areas of frost after 5am. Otherwise, mostly clear, with a low around 37. Light northwest wind.
Saturday
Sunny, with a high near 67. Calm wind.
Saturday Night
Mostly cloudy, with a low around 43. Calm wind.
Sunday
Mostly cloudy, with a high near 61. Calm wind becoming south 5 to 9 mph in the morning.
Sunday Night
A chance of showers, mainly after 9pm. Mostly cloudy, with a low around 41. Southeast wind 3 to 6 mph. Chance of precipitation is 50%.
Memorial Day
Showers likely, mainly before 3pm. Mostly cloudy, with a high near 54. Chance of precipitation is 70%.
Monday Night
A chance of showers, mainly before 9pm. Mostly cloudy, with a low around 45. Chance of precipitation is 30%.
Tuesday
A slight chance of showers between 10am and 2pm, then a slight chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 69. Chance of precipitation is 20%.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 48. Chance of precipitation is 40%.
Wednesday
A chance of showers. Partly sunny, with a high near 66. Chance of precipitation is 40%.
Wednesday Night
A slight chance of showers. Partly cloudy, with a low around 46. Chance of precipitation is 20%.
Thursday
A slight chance of showers. Mostly sunny, with a high near 65. Chance of precipitation is 20%.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
3 Miles W Katahdin Iron Works State Park ME
45.44°N 69.21°W (Elev. 899 ft)
45.44°N 69.21°W (Elev. 899 ft)
4:02 pm EDT May 21, 2026
4pm EDT May 21, 2026-6pm EDT May 28, 2026
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