Ayer, MA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Ayer, a community in Middlesex County, Massachusetts.
This Afternoon
66°F
Mostly Sunny
Mostly sunny, with a high near 66. Southeast wind around 2 mph.
7-day forecast for Ayer
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 66°F | Mostly Sunny | 2 mph SE | 0% |
| Tonight | 45°F | Partly Cloudy | 1 to 5 mph S | 1% |
| Sunday | 57°F | Rain Showers | 0 to 5 mph SE | 100% |
| Sunday Night | 52°F | Rain Showers | 3 to 7 mph NE | 99% |
| Monday | 68°F | Patchy Fog then Partly Sunny | 7 mph N | 10% |
| Monday Night | 45°F | Mostly Cloudy | 3 mph NE | 1% |
| Tuesday | 63°F | Partly Sunny | 3 to 7 mph NE | 2% |
| Tuesday Night | 43°F | Partly Cloudy | 1 to 6 mph NE | 1% |
| Wednesday | 63°F | Mostly Sunny | 6 to 10 mph NE | 1% |
| Wednesday Night | 43°F | Mostly Cloudy | 2 to 8 mph NE | 13% |
| Thursday | 62°F | Slight Chance Rain Showers | 7 to 10 mph NE | 22% |
| Thursday Night | 44°F | Chance Rain Showers | 5 to 10 mph NE | 34% |
| Friday | 63°F | Chance Rain Showers | 12 mph NE | 41% |
| Friday Night | 46°F | Chance Rain Showers | 9 to 13 mph N | 41% |
Forecast source: National Weather Service (api.weather.gov) for Ayer (42.562, -71.585). Updated through the day.
Growing snapshot for Ayer
Last spring frost
Apr 29
First fall frost
Oct 11
Growing season
164 days
Hardiness zone
6a
More local growing data for Ayer: nearby ZIP 01432 weather · frost dates · planting calendar · Massachusetts frost dates
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Climate data from the nearest NOAA station, Fitchburg Muni Ap, Ma (9.3 mi from Ayer). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.