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

Fitchburg, Fitchburg Municipal Airport (KFIT)

Lat: 42.55°NLon: 71.76°WElev: 348ft.

Fog/Mist

64°F

18°C

Humidity 96%
Wind Speed Calm
Barometer 29.99 in (1015.5 mb)
Dewpoint 63°F (17°C)
Visibility 3.00 mi
Last update 22 Aug 11:52 pm EDT
Extended Forecast for

Ayer MA

  • Overnight

    Overnight: Patchy drizzle and fog with a chance of showers. Cloudy, with a low around 62. Calm wind. Chance of precipitation is 30%.

    Low: 62 °F

    Chance
    Showers and
    Patchy Fog

  • Sunday

    Sunday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm. Patchy fog before 2pm. Otherwise, cloudy, with a high near 75. Calm wind. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 75 °F

    Showers
    Likely and
    Patchy Fog

  • Sunday Night

    Sunday Night: Showers and thunderstorms likely, mainly before 8pm. Patchy fog after 3am. 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.

    Low: 61 °F

    Showers
    Likely then
    Patchy Fog

  • Monday

    Monday: Patchy fog before 7am. Otherwise, sunny, with a high near 82. Calm wind becoming southwest 5 to 9 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 82 °F

    Patchy Fog
    then Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 55. Light west wind.

    Low: 55 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 80. West wind 5 to 9 mph, with gusts as high as 20 mph.

    High: 80 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 56. Light west wind.

    Low: 56 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 83. West wind 3 to 6 mph.

    High: 83 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 58. Calm wind.

    Low: 58 °F

    Mostly Clear

Detailed Forecast

Overnight
Patchy drizzle and fog with a chance of showers. Cloudy, with a low around 62. Calm wind. Chance of precipitation is 30%.
Sunday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm. Patchy fog before 2pm. Otherwise, cloudy, with a high near 75. Calm wind. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Showers and thunderstorms likely, mainly before 8pm. Patchy fog after 3am. 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.
Monday
Patchy fog before 7am. Otherwise, sunny, with a high near 82. Calm wind becoming southwest 5 to 9 mph in the afternoon. Winds could gust as high as 20 mph.
Monday Night
Mostly clear, with a low around 55. Light west wind.
Tuesday
Sunny, with a high near 80. West wind 5 to 9 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 56. Light west wind.
Wednesday
Sunny, with a high near 83. West wind 3 to 6 mph.
Wednesday Night
Mostly clear, with a low around 58. Calm wind.
Thursday
Mostly sunny, with a high near 84. Calm wind becoming south around 6 mph in the afternoon.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 61. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Friday
A chance of showers. Partly sunny, with a high near 82. Calm wind becoming southeast around 6 mph in the afternoon. Chance of precipitation is 50%.
Friday Night
Partly cloudy, with a low around 61. Calm wind.
Saturday
Mostly sunny, with a high near 83. Calm wind becoming west around 6 mph in the afternoon.
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ABOUT THIS FORECAST

 
Point Forecast:
Ayer MA
 42.58°N 71.56°W (Elev. 348 ft)
Last Update:
10:49 pm EDT Aug 22, 2026
Forecast Valid:
12am EDT Aug 23, 2026-6pm EDT Aug 29, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation