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

Extreme Heat and Excessive Rainfall Today

Dangerous and extreme heat will remain across portions of the southern U.S. through the weekend. A heat wave over the Southwest U.S. will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Multiple rounds of thunderstorms will produce heavy to excessive rainfall with significant flash flooding across portions of southern New England. Read More >

Current conditions at

Greenville (KGNR)

Lat: 45.46°NLon: 69.55°WElev: 1394ft.

69°F

21°C

Humidity 73%
Wind Speed SE 8 G 18 mph
Barometer 29.85 in (1010.4 mb)
Dewpoint 60°F (16°C)
Visibility NA
Last update 29 Jul 4:56 pm EDT
Extended Forecast for

Onawa ME

  • Tonight

    Tonight: A chance of rain, mainly after 1am. Patchy fog after 9pm. Otherwise, cloudy, with a low around 60. Southeast wind 5 to 7 mph becoming calm in the evening. Chance of precipitation is 40%.

    Low: 60 °F

    Chance Rain
    and Patchy
    Fog

  • Thursday

    Thursday: A chance of rain before 2pm, then a chance of rain and thunderstorms between 2pm and 3pm, then rain likely and possibly a thunderstorm after 3pm. Cloudy, with a high near 69. Northeast wind 6 to 8 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 69 °F

    Rain Likely

  • Thursday Night

    Thursday Night: A chance of rain, mainly before 3am. Patchy fog. Otherwise, cloudy, with a low around 59. Light north wind. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 59 °F

    Chance Rain
    and Patchy
    Fog

  • Friday

    Friday: Patchy fog before 9am. Otherwise, partly sunny, with a high near 76. North wind around 5 mph.

    High: 76 °F

    Patchy Fog
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Patchy fog after 3am. Otherwise, partly cloudy, with a low around 57. Calm wind.

    Low: 57 °F

    Partly Cloudy
    then Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 82. Calm wind.

    High: 82 °F

    Patchy Fog
    then Partly
    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 61. Calm wind.

    Low: 61 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 81. Chance of precipitation is 40%.

    High: 81 °F

    Mostly Cloudy
    then Chance
    Showers

  • Sunday Night

    Sunday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 59. Chance of precipitation is 60%.

    Low: 59 °F

    Showers
    Likely

Detailed Forecast

Tonight
A chance of rain, mainly after 1am. Patchy fog after 9pm. Otherwise, cloudy, with a low around 60. Southeast wind 5 to 7 mph becoming calm in the evening. Chance of precipitation is 40%.
Thursday
A chance of rain before 2pm, then a chance of rain and thunderstorms between 2pm and 3pm, then rain likely and possibly a thunderstorm after 3pm. Cloudy, with a high near 69. Northeast wind 6 to 8 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A chance of rain, mainly before 3am. Patchy fog. Otherwise, cloudy, with a low around 59. Light north wind. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Patchy fog before 9am. Otherwise, partly sunny, with a high near 76. North wind around 5 mph.
Friday Night
Patchy fog after 3am. Otherwise, partly cloudy, with a low around 57. Calm wind.
Saturday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 82. Calm wind.
Saturday Night
Mostly cloudy, with a low around 61. Calm wind.
Sunday
A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 81. Chance of precipitation is 40%.
Sunday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 59. Chance of precipitation is 60%.
Monday
A chance of showers. Mostly cloudy, with a high near 77. Chance of precipitation is 50%.
Monday Night
A slight chance of showers. Partly cloudy, with a low around 58. Chance of precipitation is 20%.
Tuesday
Sunny, with a high near 80.
Tuesday Night
Mostly clear, with a low around 59.
Wednesday
Sunny, with a high near 85.
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ABOUT THIS FORECAST

 
Point Forecast:
Onawa ME
 45.36°N 69.39°W (Elev. 699 ft)
Last Update:
4:02 pm EDT Jul 29, 2026
Forecast Valid:
5pm EDT Jul 29, 2026-6pm EDT Aug 5, 2026
 
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