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.

Fair

47°F

8°C

Humidity 100%
Wind Speed NW 3 mph
Barometer 30.08 in (1018.6 mb)
Dewpoint 47°F (8°C)
Visibility 8.00 mi
Last update 18 Apr 1:52 am EDT
Extended Forecast for

Ayer MA

  • Overnight

    Overnight: Areas of fog after 3am. Otherwise, partly cloudy, with a low around 48. Calm wind.

    Low: 48 °F

    Areas Fog

  • Saturday

    Saturday: Areas of fog before 7am. Otherwise, mostly cloudy, with a high near 55. East wind 5 to 7 mph.

    High: 55 °F

    Areas Fog
    then Mostly
    Cloudy

  • Saturday Night

    Saturday Night: Patchy fog after 10pm. Otherwise, cloudy, with a low around 43. Light southeast wind.

    Low: 43 °F

    Patchy Fog

  • Sunday

    Sunday: Rain, mainly after 8am. Patchy fog before 1pm. High near 55. Calm wind becoming northwest 5 to 9 mph in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 55 °F

    Rain and
    Patchy Fog

  • Sunday Night

    Sunday Night: Rain likely, mainly before 1am. Partly cloudy, with a low around 33. West wind 3 to 6 mph. Chance of precipitation is 70%.

    Low: 33 °F

    Rain Likely
    then Chance
    Rain

  • Monday

    Monday: Mostly sunny, with a high near 50. West wind 6 to 8 mph.

    High: 50 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 27. Light north wind.

    Low: 27 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 52. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 52 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 36. South wind around 5 mph.

    Low: 36 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Areas of fog after 3am. Otherwise, partly cloudy, with a low around 48. Calm wind.
Saturday
Areas of fog before 7am. Otherwise, mostly cloudy, with a high near 55. East wind 5 to 7 mph.
Saturday Night
Patchy fog after 10pm. Otherwise, cloudy, with a low around 43. Light southeast wind.
Sunday
Rain, mainly after 8am. Patchy fog before 1pm. High near 55. Calm wind becoming northwest 5 to 9 mph in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
Rain likely, mainly before 1am. Partly cloudy, with a low around 33. West wind 3 to 6 mph. Chance of precipitation is 70%.
Monday
Mostly sunny, with a high near 50. West wind 6 to 8 mph.
Monday Night
Partly cloudy, with a low around 27. Light north wind.
Tuesday
Sunny, with a high near 52. Calm wind becoming southwest around 5 mph in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 36. South wind around 5 mph.
Wednesday
Partly sunny, with a high near 59. Southwest wind 5 to 7 mph.
Wednesday Night
Partly cloudy, with a low around 37. Light northwest wind.
Thursday
Mostly sunny, with a high near 63. Northwest wind 3 to 7 mph.
Thursday Night
Mostly cloudy, with a low around 40. Light northwest wind.
Friday
Partly sunny, with a high near 62. Calm wind becoming north 5 to 7 mph in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Ayer MA
 42.56°N 71.59°W (Elev. 249 ft)
Last Update:
1:55 am EDT Apr 18, 2026
Forecast Valid:
2am EDT Apr 18, 2026-6pm EDT Apr 24, 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