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

Risks of Severe Thunderstorms and Excessive Rainfall; Fire Weather Concerns and Record Warmth

Severe thunderstorms and flash flooding risks increase across the center of the nation today. Meanwhile, ongoing thunderstorms and flash flooding will linger along the Gulf Coast states through the evening. The Great Basin and Intermountain West, warm temperatures and dry fuels with dry lightning may enhance fire weather potential. In addition, across interior Alaska, Red Flag Warning are posted. Read More >

Current conditions at

Bangor, Bangor International Airport (KBGR)

Lat: 44.8°NLon: 68.82°WElev: 190ft.

Overcast

69°F

21°C

Humidity 55%
Wind Speed NW 15 G 25 mph
Barometer 29.55 in (1000.6 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 20 Jun 4:53 pm EDT
Extended Forecast for

Derby ME

  • Tonight

    Tonight: Mostly clear, with a low around 52. West wind 3 to 7 mph.

    Low: 52 °F

    Mostly Clear

  • Sunday

    Sunday: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 2pm. High near 74. Light west wind. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 74 °F

    Scattered
    Showers then
    Showers

  • Sunday Night

    Sunday Night: Scattered showers and thunderstorms. Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 52. Calm wind. Chance of precipitation is 30%.

    Low: 52 °F

    Scattered
    Showers and
    Patchy Fog

  • Monday

    Monday: A chance of showers before 2pm, then a chance of showers and thunderstorms between 2pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Patchy fog before 9am. Otherwise, partly sunny, with a high near 74. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 74 °F

    Slight Chance
    Showers and
    Patchy Fog
    then Showers
    Likely

  • Monday Night

    Monday Night: A slight chance of showers and thunderstorms, then a chance of showers after 8pm. Mostly cloudy, with a low around 55. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 55 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Tuesday

    Tuesday: Showers likely, mainly before noon. Mostly cloudy, with a high near 70. Northeast wind 3 to 6 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    High: 70 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: A slight chance of showers before 10pm. Partly cloudy, with a low around 55. Light northwest wind. Chance of precipitation is 20%.

    Low: 55 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 55.

    Low: 55 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 52. West wind 3 to 7 mph.
Sunday
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 2pm. High near 74. Light west wind. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
Scattered showers and thunderstorms. Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 52. Calm wind. Chance of precipitation is 30%.
Monday
A chance of showers before 2pm, then a chance of showers and thunderstorms between 2pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Patchy fog before 9am. Otherwise, partly sunny, with a high near 74. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday Night
A slight chance of showers and thunderstorms, then a chance of showers after 8pm. Mostly cloudy, with a low around 55. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday
Showers likely, mainly before noon. Mostly cloudy, with a high near 70. Northeast wind 3 to 6 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday Night
A slight chance of showers before 10pm. Partly cloudy, with a low around 55. Light northwest wind. Chance of precipitation is 20%.
Wednesday
Sunny, with a high near 79.
Wednesday Night
Partly cloudy, with a low around 55.
Thursday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 79. Chance of precipitation is 30%.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 53. Chance of precipitation is 30%.
Friday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 75. Chance of precipitation is 60%.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 54. Chance of precipitation is 40%.
Saturday
Showers and thunderstorms likely. Partly sunny, with a high near 78. Chance of precipitation is 60%.
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ABOUT THIS FORECAST

 
Point Forecast:
Derby ME
 45.24°N 68.99°W (Elev. 312 ft)
Last Update:
4:02 pm EDT Jun 20, 2026
Forecast Valid:
5pm EDT Jun 20, 2026-6pm EDT Jun 27, 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