National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Prolonged, Intense Heat Wave; Excessive Rainfall in the Southern Rockies; Severe Weather in the Central US

Extremely dangerous heat will persist from the Midwest to the East Coast into late this week. Monsoonal moisture may produce excessive rain and considerable flash flooding and debris flows, especially near recent burn scar areas in New Mexico and west Texas. Severe storms are possible from the southern/central Plains into the Great Lakes and Northeast, and the northern/central Plains today. Read More >

Hazardous Weather Conditions

Current conditions at

Greenville (KGNR)

Lat: 45.46°NLon: 69.55°WElev: 1394ft.

87°F

31°C

Humidity 48%
Wind Speed NW 9 G 24 mph
Barometer 29.93 in (1012.7 mb)
Dewpoint 65°F (18°C)
Visibility NA
Heat Index89°F (32°C)
Last update 24 Jun 4:56 pm EDT
Extended Forecast for

Guilford ME

Heat Advisory June 24, 05:42pm until June 24, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory June 24, 05:42pm until June 24, 08:00pm

    NOW until 8:00pm Tue

    Heat Advisory

  • This Afternoon

    High: 94 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 69. West wind 3 to 6 mph. Chance of precipitation is 20%.

    Low: 69 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 84. Northwest wind 6 to 10 mph, with gusts as high as 20 mph.

    High: 84 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 52. North wind 3 to 6 mph.

    Low: 52 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 74. Northwest wind 3 to 5 mph.

    High: 74 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 51. West wind 3 to 5 mph.

    Low: 51 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 75. Light and variable wind.

    High: 75 °F

    Partly Sunny

  • Friday Night

    Friday Night: Showers likely, mainly after 1am. Mostly cloudy, with a low around 53. Chance of precipitation is 60%.

    Low: 53 °F

    Showers
    Likely

Detailed Forecast

This Afternoon
A slight chance of showers and thunderstorms. Mostly sunny and hot, with a high near 94. Heat index values as high as 102. Northwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Tonight
A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 69. West wind 3 to 6 mph. Chance of precipitation is 20%.
Wednesday
Sunny, with a high near 84. Northwest wind 6 to 10 mph, with gusts as high as 20 mph.
Wednesday Night
Mostly clear, with a low around 52. North wind 3 to 6 mph.
Thursday
Mostly sunny, with a high near 74. Northwest wind 3 to 5 mph.
Thursday Night
Partly cloudy, with a low around 51. West wind 3 to 5 mph.
Friday
Partly sunny, with a high near 75. Light and variable wind.
Friday Night
Showers likely, mainly after 1am. Mostly cloudy, with a low around 53. Chance of precipitation is 60%.
Saturday
Showers likely. Mostly cloudy, with a high near 63. Chance of precipitation is 70%.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 54. Chance of precipitation is 50%.
Sunday
A chance of showers. Mostly cloudy, with a high near 74. Chance of precipitation is 30%.
Sunday Night
A slight chance of showers. Mostly cloudy, with a low around 58. Chance of precipitation is 20%.
Monday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 84. Chance of precipitation is 20%.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Chance of precipitation is 40%.
Tuesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 82.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Guilford ME
 45.16°N 69.38°W (Elev. 499 ft)
Last Update:
3:14 pm EDT Jun 24, 2025
Forecast Valid:
5pm EDT Jun 24, 2025-6pm EDT Jul 1, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation