Updated October 2026
Weir Farm National Historical Park Weather by Month
Weir Farm National Historical Park is warmest in July, when the nearest NOAA climate station averages a high of 82°F and a low of 62°F, and coldest in January, with an average high of 36°F and an average low of 18°F. September is the wettest month, with about 4.8 inches of precipitation.
These figures are NOAA's 1991–2020 climate normals, the 30-year average for each calendar month, from the nearest long-record weather station, 8 miles from the park's reference point. A single station cannot describe a whole park: temperatures elsewhere in Weir Farm National Historical Park can differ from these, particularly with elevation.
Warmest month
Jul
82°F avg high
Coldest month
Jan
18°F avg low
Wettest month
Sep
4.8 in avg
Longest days
Jun
15.0 h of daylight
Average weather at Weir Farm by month
| Month | Avg high | Avg low | Precipitation | Daylight |
|---|---|---|---|---|
| January | 36°F | 18°F | 3.1 in | 9.3 h |
| February | 39°F | 20°F | 2.7 in | 10.4 h |
| March | 47°F | 27°F | 3.9 in | 11.7 h |
| April | 59°F | 37°F | 3.7 in | 13.1 h |
| May | 69°F | 46°F | 3.8 in | 14.3 h |
| June | 78°F | 56°F | 4.5 in | 15.0 h |
| July | 82°F | 62°F | 4.5 in | 14.7 h |
| August | 80°F | 60°F | 4.6 in | 13.7 h |
| September | 74°F | 52°F | 4.8 in | 12.3 h |
| October | 62°F | 41°F | 4.5 in | 10.9 h |
| November | 51°F | 31°F | 3.8 in | 9.6 h |
| December | 41°F | 24°F | 4.2 in | 9.0 h |
| Year total | 48.1 in |
NOAA 1991–2020 climate normals from station USW00054734, 8 miles from the park's reference point. Daylight is the monthly average, computed from the park's latitude. Each month links to how crowded Weir Farm is at that time of year.
Weir Farm weather by season
Winter: December to February
Average highs bottom out at 36°F in January, between 41°F in December and 39°F in February, with average lows between 18°F and 24°F. The average low is at or below freezing in all three months. Together the three months average 10 inches of precipitation, about 21% of the yearly total and less than in any other season. Daylight is at its shortest, about 9.0 hours in December.
Spring: March to May
Average highs climb from 47°F in March to 69°F in May, with average lows between 27°F and 46°F. The average low is at or below freezing in March. Together the three months average 11.4 inches of precipitation, about 24% of the yearly total. Daylight lengthens from about 11.7 hours in March to 14.3 in May.
Summer: June to August
Average highs peak at 82°F in July, between 78°F in June and 80°F in August, with average lows between 56°F and 62°F. Together the three months average 13.6 inches of precipitation, about 28% of the yearly total and more than in any other season. Daylight is at its longest, about 15.0 hours in June.
Fall: September to November
Average highs fall from 74°F in September to 51°F in November, with average lows between 31°F and 52°F. The average low is at or below freezing in November. Together the three months average 13.1 inches of precipitation, about 27% of the yearly total. Daylight shortens from about 12.3 hours in September to 9.6 in November.
What the National Park Service says about the weather
Weir Farm’s grounds are open all year and each season offers a unique experience. For a comfortable visit please note the following information. Winter: Temperatures average from 20 F to 40 F. Storms and colder weather are possible. Spring: Temperatures average from 30 F to 70 F. Rain is common. Summer: Temperatures average from 60 F to 85 F. High humidity is common in July and August. Fall: Temperatures average from 35 F to 75 F. Foliage season runs from mid-September to mid-to-late October.
Weather description courtesy of the National Park Service — official park site.
Today's forecast for Weir Farm
Averages describe a typical month, not this week. For current conditions and the seven-day outlook, the National Weather Service issues a forecast for the park's reference point at 41.26°N, 73.45°W. It covers that one spot, so other elevations in the park can differ from it, as they do from the averages above.
National Weather Service forecast for Weir Farm National Historical Park →
Weather and crowds together
July, the warmest month, sees about 1.6× the visitors of the park's average month. August is the busiest month of the year and February the quietest. To see those crowds set against the weather for all twelve months, read the best time to visit Weir Farm National Historical Park. For hotels, cabins and rentals close to the park, see where to stay near Weir Farm.
Where to stay near Weir Farm
Picked a month for Weir Farm National Historical Park? Compare hotels, cabins and vacation rentals near the park with live availability and prices.
Top-rated places to stay near Weir Farm
Prices for Oct 16–18, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a trip to Weir Farm?
Get crowd forecasts and lodging deals for Weir Farm by email. No spam, unsubscribe anytime.
Frequently Asked Questions
July is the warmest month at Weir Farm National Historical Park, with an average high of 82°F and an average low of 62°F. That is the 1991–2020 average at the nearest long-record NOAA station, 8 miles from the park's reference point. Temperatures inside the park can differ, particularly with elevation.
January is the coldest month at Weir Farm National Historical Park, with an average low of 18°F and an average high of 36°F, based on NOAA 1991–2020 climate normals.
September is the wettest month, with about 4.8 inches of precipitation. February is the driest, at about 2.7 inches. The station records about 48.1 inches of precipitation in an average year.
Daylight at Weir Farm National Historical Park runs from about 9.0 hours a day in December to about 15.0 hours in June, computed from the park's latitude.
Weather at nearby parks
26 mi away · warmest in July (83°F)
32 mi away · warmest in July (86°F)
40 mi away · warmest in July (85°F)
41 mi away · warmest in July (85°F)
42 mi away · warmest in July (83°F)
43 mi away · warmest in July (83°F)
Keep exploring
Sources: NOAA NCEI U.S. Climate Normals 1991–2020 (station USW00054734), daylight computed from latitude, weather description from the National Park Service, crowd levels from National Park Service Visitor Use Statistics (1993–2025). Updated 2026-10-11. Lodging results are provided by Stay22; WhenToVisitParks may earn a commission from bookings, at no extra cost to you.