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Thanks to members and donors.

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Arnoldia

Arboretum Weather Data

2026-01_2026-06_Weld_Hill Download

2025-07_2025-12 Weld Hill Download

2025-03_2025-06 Weld Hill Download

2025-01_2025-03 Weld Hill Download

2024-07_2024-12 Weld Hill Download

2024-01_2024-06 Weld Hill Download

2023-07_2023-12 Weld Hill Download

2023-01_2023-06 Weld Hill Download

2022-07_2022-12 Weld Hill Download

2022-01_2022-06 Weld Hill Download

2021-07_2021-12 Weld Hill Download

2021-01_2021-06 Weld Hill Download

2020-08_2020-12 Weld Hill Download

2012-02-23_2020-08-25 Weld Hill zip containg multiple files Download

1896-1946 Historical Weather Data Download

Rooted in history.

The Arnold Arboretum sits on land long inhabited by Indigenous Peoples, most recently the Massachusett Tribe, and on property purchased with wealth from goods produced by enslaved persons.

Free and open every day.

We are committed to the Olmstedian principle that everyone is entitled to open space, so our gates are open to everyone, every day, free of charge.

Funded by our community.

The Arnold Arboretum has been funded by the generosity of the supporting public since our founding in 1872. Give today and continue that legacy.

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