Grindstone, Maine Weather
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Weather Forecast for Grindstone, Maine : Penobscot County
Issued: 2:25 am EDT Jun 5, 2025 Latitude: 45.7361621 Longitude: -68.5866988 View on Google Maps

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Today Tonight Friday Saturday Sunday Monday Tuesday Wednesday
60% chance of thunderstorms on Today 60% chance of thunderstorms on Tonight 20% chance of rain on Friday 80% chance of thunderstorms on Saturday 30% chance of on Sunday 20% chance of rain on Monday 30% chance of rain on Tuesday 60% chance of rain on Wednesday
High: 88°F Low: 61°F High: 81°F High: 69°F High: 74°F High: 73°F High: 70°F High: 73°F
Low: 59°F Low: 56°F Low: 52°F Low: 53°F Low: 57°F  
Thunderstorms Thunderstorms Rain Thunderstorms Partly Sunny Rain Rain Rain
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Current Conditions at
MILLINOCKET - (KMLT)
54°
Clear
as of 4:53 AM EDST
Rel. Humidity: 93%
Dew Point: 52°F
Visibility: 10 Miles
Pressure: 29.99 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
HOULTON - (KHUL)
57°
Clear
as of 4:53 AM EDST
Rel. Humidity: 76%
Dew Point: 50°F
Visibility: 10 Miles
Pressure: 29.95 in.
Flight Rule: VFR
Wind Data
8 MPH
190° South
Cloud Level(s): Clear
Current Conditions at
GREENVILLE - (KGNR)
64°
Clear
as of 4:56 AM EDST
Rel. Humidity: 63%
Dew Point: 52°F
Pressure: 29.98 in.
Wind Data
Calm
Current Conditions at
CARIBOU - (KCAR)
57°
Clear
as of 4:54 AM EDST
Rel. Humidity: 82%
Dew Point: 52°F
Visibility: 10 Miles
Pressure: 29.92 in.
Flight Rule: VFR
Wind Data
5 MPH
180° South
Cloud Level(s): Clear
60% chance of thunderstorms Today Today... Isolated showers before 2pm, then scattered showers and thunderstorms between 2pm and 3pm, then showers likely and possibly a thunderstorm after 3pm. Widespread haze before 2pm. Increasing clouds and hot, with a high near 88. Calm wind becoming southwest 5 to 7 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
60% chance of thunderstorms Tonight Tonight... Showers and thunderstorms likely before 9pm, then isolated showers between 9pm and 10pm. Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 61. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
20% chance of rain Friday Friday... A slight chance of showers after 3pm. Mostly sunny, with a high near 81. Light north wind. Chance of precipitation is 20%.
50% chance of rain Friday Night Friday Night... A chance of showers, mainly after 8pm. Mostly cloudy, with a low around 59. Calm wind. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
80% chance of thunderstorms Saturday Saturday... Rain, with thunderstorms also possible after 2pm. High near 69. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
60% chance of rain Saturday Night Saturday Night... Rain likely before 10pm, then a chance of showers after 10pm. Mostly cloudy, with a low around 56. Light and variable wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
30% chance of Sunday Sunday... A chance of showers, mainly after 2pm. Partly sunny, with a high near 74. North wind around 6 mph. Chance of precipitation is 30%.
30% chance of rain Sunday Night Sunday Night... A chance of showers, mainly before 7pm. Partly cloudy, with a low around 52. Chance of precipitation is 30%.
20% chance of rain Monday Monday... A slight chance of showers. Mostly sunny, with a high near 73. Chance of precipitation is 20%.
20% chance of rain Monday Night Monday Night... A slight chance of showers. Mostly cloudy, with a low around 53. Chance of precipitation is 20%.
30% chance of rain Tuesday Tuesday... A chance of showers. Mostly cloudy, with a high near 70. Chance of precipitation is 30%.
60% chance of rain Tuesday Night Tuesday Night... Showers likely. Cloudy, with a low around 57. Chance of precipitation is 60%.
60% chance of rain Wednesday Wednesday... Showers likely. Mostly cloudy, with a high near 73. Chance of precipitation is 60%.
Current Radar Image


Sun Almanac for Grindstone, Maine
Sunrise: 04:46 AM
Sunset: 8:20 PM
Civil Sunrise:04:08 AM
Civil Sunset: 8:58 PM
Nautical Sunrise: 03:18 AM
Nautical Sunset: 9:47 PM
Astro Sunrise: 02:12 AM
Astro Sunset: 10:53 PM
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